CN204329090U - Electricity cooking pot and control circuit thereof - Google Patents
Electricity cooking pot and control circuit thereof Download PDFInfo
- Publication number
- CN204329090U CN204329090U CN201420743661.9U CN201420743661U CN204329090U CN 204329090 U CN204329090 U CN 204329090U CN 201420743661 U CN201420743661 U CN 201420743661U CN 204329090 U CN204329090 U CN 204329090U
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- module
- base stage
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Control Of Resistance Heating (AREA)
Abstract
The utility model discloses a kind of electric cooking pot and control circuit thereof, wherein control circuit comprises: N number of coil panel module; Power module; N number of power switch, each power switch is connected with each coil panel module one_to_one corresponding; N number of driver module, each driver module is connected with each power switch one_to_one corresponding; N number of switch control module, each switch control module is connected with each driver module one_to_one corresponding; N number of temperature detecting module, each temperature detecting module detects the temperature of each power switch respectively; Controller, controller comprises temperature detection end, power switch drive end and N number of switch control terminal, temperature detection end is connected with N number of temperature detecting module respectively, power switch drive end is connected with N number of driver module respectively, each switch control terminal is connected with each switch control module one_to_one corresponding, and is connected with each temperature detecting module respectively.This control circuit can save the chip port of controller, can greatly reduce costs.
Description
Technical field
The utility model relates to electric heating appliance technical field, particularly a kind of control circuit of electric cooking pot and a kind of electric cooking pot with this control circuit.
Background technology
In the products such as electric cooking pot such as electric cooker, electromagnetic oven, electric pressure cooking saucepan, during the IH computer heating control of multi-thread dish, controller such as MCU is to power switch such as IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) carry out the port of temperature detection and be independently separate to the port that IGBT carries out switch control rule, so just cause the demand of MCU to port number more.
But when the chip port deficiency of MCU, just need change the more MCU of port number or increase MCU quantity, all correspondingly greatly can increase cost.Further, if MCU is customization, then can only solves the problem of port deficiency by the quantity increasing MCU, not only increase cost, and need to carry out mutual communication between multiple MCU, greatly reduce reliability.
Utility model content
The purpose of this utility model is intended at least solve above-mentioned technological deficiency.
For this reason, an object of the present utility model is the control circuit proposing a kind of electric cooking pot, by selecting the port that power switch carries out work and the multiplexed port controlled power switch temperature detection by controlling, saving the chip port of controller, can greatly reduce costs.
Another object of the present utility model is to propose a kind of electric cooking pot.
For achieving the above object, the control circuit of a kind of electric cooking pot that the utility model proposes on the one hand, comprising: N number of coil panel module, wherein, N be more than or equal to 2 integer; Power module, described power module be connected with described N number of coil panel module respectively with give described N number of coil panel module for power supply; N number of power switch, each power switch in described N number of power switch is connected to form N number of heater with each coil panel module one_to_one corresponding in described N number of coil panel module; N number of driver module, each driver module in described N number of driver module is connected to drive described each power switch with each power switch one_to_one corresponding in described N number of power switch; N number of switch control module, each switch control module in described N number of switch control module is connected to control described each driver module with each driver module one_to_one corresponding in described N number of driver module; N number of temperature detecting module, each temperature detecting module in described N number of temperature detecting module detects the temperature of each power switch in described N number of power switch respectively; Controller, described controller comprises temperature detection end, power switch drive end and N number of switch control terminal, described temperature detection end is connected with described N number of temperature detecting module respectively, described power switch drive end is connected with described N number of driver module respectively, each switch control terminal in described N number of switch control terminal is connected with each switch control module one_to_one corresponding in described N number of switch control module, and is connected with each temperature detecting module in N number of temperature detecting module respectively.
According to the control circuit of electric cooking pot of the present utility model, correspondingly control each switch control module by each switch control terminal output control signal and whether carry out work to control each driver module, the driver module carrying out work drives corresponding power switch to carry out work, and export by each switch control terminal the temperature that control signal controls corresponding temperature detecting module to detect the power switch carrying out work, such as when being controlled corresponding switch control module by a switch control terminal output control signal and normally working to control corresponding driver module, the power switch that the driver module driven of normal work is corresponding carries out work, and the control signal that this switch control terminal exports controls a temperature detecting module carrys out the temperature that the power switch of work is carried out in corresponding detection simultaneously.Therefore, the control circuit of electric cooking pot of the present utility model can select power switch to carry out the chip port of work and the multiplexed port controlling to carry out this power switch temperature detection by controlling, thus greatly can save the chip port of controller, like this when chip port demand is many also without the need to increasing controller, not only greatly can reduce costs, the reliability of circuit can also be improved.
Wherein, when N is 2, the first driver module specifically comprises: the first resistance, and one end of described first resistance is connected with described power switch drive end, and one end of described first resistance is connected by the second resistance and the first default power supply; First triode, the base stage of described first triode is connected with the other end of described first resistance, the grounded emitter of described first triode; 3rd resistance, one end and described first of described 3rd resistance is preset power supply and is connected, and the other end of described 3rd resistance is connected with the colelctor electrode of described first triode; Second triode, the base stage of described second triode is connected with the colelctor electrode of described first triode, and the colelctor electrode of described second triode is preset power supply by the 4th resistance and described first and is connected; 3rd triode, the base stage of described 3rd triode is connected with the base stage of described second triode, the grounded collector of described 3rd triode, and the emitter stage of described 3rd triode is connected with the emitter stage of described second triode; First electric capacity, described first Capacitance parallel connection is between the base stage and colelctor electrode of described 3rd triode; 5th resistance, one end of described 5th resistance is connected with the node between the emitter stage of described 3rd triode and the emitter stage of described second triode, and the other end of described 5th resistance is connected with the control end of the first power switch.
Further, the second driver module specifically comprises: the 6th resistance, and one end of described 6th resistance is connected with described power switch drive end, and one end of described 6th resistance is connected by described second resistance and the described first default power supply; 4th triode, the base stage of described 4th triode is connected with the other end of described 6th resistance, the grounded emitter of described 4th triode; 7th resistance, one end and described first of described 7th resistance is preset power supply and is connected, and the other end of described 7th resistance is connected with the colelctor electrode of described 4th triode; 5th triode, the base stage of described 5th triode is connected with the colelctor electrode of described 4th triode, and the colelctor electrode of described 5th triode is preset power supply by described 4th resistance and described first and is connected; 6th triode, the base stage of described 6th triode is connected with the base stage of described 5th triode, the grounded collector of described 6th triode, and the emitter stage of described 6th triode is connected with the emitter stage of described 5th triode; Second electric capacity, described second Capacitance parallel connection is between the base stage and colelctor electrode of described 6th triode; 8th resistance, one end of described 8th resistance is connected with the node between the emitter stage of described 6th triode and the emitter stage of described 5th triode, and the other end of described 8th resistance is connected with the control end of the second power switch.
Preferably, described first driver module also comprises the 9th resistance in parallel and the first voltage-stabiliser tube, ground connection after one end of described 9th resistance is connected with the anode of described first voltage-stabiliser tube, is connected with the control end of described first power switch after the other end of described 9th resistance is connected with the negative electrode of described first voltage-stabiliser tube.
Preferably, described second driver module also comprises the tenth resistance in parallel and the second voltage-stabiliser tube, ground connection after one end of described tenth resistance is connected with the anode of described second voltage-stabiliser tube, is connected with the control end of described second power switch after the other end of described tenth resistance is connected with the negative electrode of described second voltage-stabiliser tube.
Wherein, the first switch control module specifically comprises: the 11 resistance, and one end of described 11 resistance is connected with the second temperature detecting module with the first switch control terminal of described controller respectively; 7th triode, the base stage of described 7th triode is connected with the other end of described 11 resistance, the grounded emitter of described 7th triode, and the colelctor electrode of described 7th triode is connected with the base stage of the base stage of described second triode with described 3rd triode; 12 resistance, described 12 resistor coupled in parallel is between the base stage and emitter stage of described 7th triode.
Second switch control module specifically comprises: the 13 resistance, and one end of described 13 resistance is connected with the first temperature detecting module with the second switch control end of described controller respectively, 8th triode, the base stage of described 8th triode is connected with the other end of described 13 resistance, the grounded emitter of described 8th triode, and the colelctor electrode of described 8th triode is connected with the base stage of described 6th triode with the base stage of described 5th triode, 14 resistance, described 14 resistor coupled in parallel is between the base stage and emitter stage of described 8th triode, wherein, when described controller is by described first switch control terminal output high level signal and by described second switch control end output low level signal, described 7th triode ON stops output drive signal to make described first driver module, described first power switch quits work, described 8th triode cut-off, the normal output drive signal of described second driver module, described second power switch normally works, and, described first temperature detecting module quits work, described second temperature detecting module starts working the temperature detecting described second power switch.
Or the first switch control module specifically comprises: the 15 resistance, one end of described 15 resistance is connected with the first temperature detecting module with the first switch control terminal of described controller respectively; 9th triode, the base stage of described 9th triode is connected with the other end of described 15 resistance, the grounded emitter of described 9th triode; 16 resistance, described 16 resistor coupled in parallel is between the base stage and emitter stage of described 9th triode; 17 resistance, one end and second of described 17 resistance is preset power supply and is connected, and the other end of described 17 resistance is connected with the colelctor electrode of described 9th triode; Tenth triode, the base stage of described tenth triode is connected with the colelctor electrode of described 9th triode, the grounded emitter of described tenth triode, and the colelctor electrode of described tenth triode is connected with the base stage of the base stage of described second triode with described 3rd triode.
Second switch control module specifically comprises: the 18 resistance, and one end of described 18 resistance is connected with the second temperature detecting module with the second switch control end of described controller respectively, 11 triode, the base stage of described 11 triode is connected with the other end of described 18 resistance, the grounded emitter of described 11 triode, 19 resistance, described 19 resistor coupled in parallel is between the base stage and emitter stage of described 11 triode, 20 resistance, one end and described second of described 20 resistance is preset power supply and is connected, and the other end of described 20 resistance is connected with the colelctor electrode of described 11 triode, 12 triode, the base stage of described 12 triode is connected with the colelctor electrode of described 11 triode, the grounded emitter of described 12 triode, the colelctor electrode of described 12 triode is connected with the base stage of described 6th triode with the base stage of described 5th triode, wherein, when described controller is by described first switch control terminal output high level signal and by described second switch control end output low level signal, described 9th triode ON and the cut-off of the tenth triode, the normal output drive signal of described first driver module, described first power switch normally works, described 11 triode cut-off and the 12 triode ON stop output drive signal to make described second driver module, described second power switch quits work, and, described second temperature detecting module quits work, described first temperature detecting module starts working the temperature detecting described first power switch.
Particularly, each temperature detecting module in described N number of temperature detecting module includes temperature sensor, and one end of described temperature sensor is connected with the switch control terminal of described controller, the other end ground connection of described temperature sensor.
Or, first temperature detecting module comprises the first temperature sensor, second temperature detecting module comprises the second temperature sensor, described control circuit also comprises controllable switch module, the control end of described controllable switch module is connected with the first switch control terminal of described controller or second switch control end, selects described first temperature sensor or described second temperature sensor to carry out work under the control of the control signal that described controllable switch module is exported by described first switch control terminal or second switch control end at described controller.
In addition, the utility model also proposed a kind of electric cooking pot, and it comprises the control circuit of above-mentioned electric cooking pot.
Electric cooking pot of the present utility model can select power switch to carry out the chip port of work and the multiplexed port controlling to carry out this power switch temperature detection by controlling by its control circuit, thus greatly can save the chip port of controller, like this when chip port demand is many also without the need to increasing controller, not only greatly can reduce costs, the reliability of control circuit can also be improved.
The aspect that the utility model is additional and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
The utility model above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the block diagram of the control circuit of electric cooking pot according to utility model embodiment;
Fig. 2 is the circuit diagram of the control circuit of electric cooking pot according to a utility model embodiment;
Fig. 3 is the circuit diagram of the control circuit of electric cooking pot according to another embodiment of utility model;
Fig. 4 is the control signal oscillogram exported by switch control terminal according to the control circuit middle controller of the electric cooking pot of the utility model embodiment;
Fig. 5 is the control signal oscillogram exported by switch control terminal according to the control circuit middle controller of the electric cooking pot of another embodiment of the utility model; And
Fig. 6 is the circuit diagram of the control circuit of electric cooking pot according to another embodiment of utility model.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In description of the present utility model, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Describe the control circuit of the electric cooking pot proposed according to the utility model embodiment with reference to the accompanying drawings and there is the electric cooking pot of this control circuit.
Fig. 1 is the block diagram of the control circuit of electric cooking pot according to utility model embodiment.As shown in Figure 1, the control circuit of this electric cooking pot comprises: N number of coil panel module 11,12 ..., 1N, power module 20, N number of power switch 31,32 ..., 3N, N number of driver module 41,42 ..., 4N, N number of switch control module 51,52 ..., 5N, N number of temperature detecting module 61,62 ..., 6N, controller 70.Wherein, N be more than or equal to 2 integer, controller 70 can be MCU, and power switch can be IGBT.
As shown in Figure 1, power module 20 respectively with N number of coil panel module 11,12 ..., 1N be connected with give N number of coil panel module 11,12 ..., 1N powers, N number of power switch 31,32 ..., each power switch in 3N and N number of coil panel module 11,12 ..., each coil panel module one_to_one corresponding in 1N is connected to form N number of heater such as resonance heater, N number of driver module 41,42 ..., each driver module in 4N and N number of power switch 31,32 ..., each power switch one_to_one corresponding in 3N is connected to drive described each power switch, namely say, each driver module generates drive singal according to the control signal that controller such as MCU sends and carries out work to drive corresponding power switch such as IGBT, N number of switch control module 51,52 ..., each switch control module in 5N and N number of driver module 41,42 ..., each driver module one_to_one corresponding in 4N is connected to control described each driver module, N number of temperature detecting module 61,62 ..., each temperature detecting module in 6N respectively to N number of power switch 31,32 ..., each power switch in 3N temperature detect, controller 70 comprises temperature detection end and AD port, power switch drive end such as IGBT drive end and N number of switch control terminal 81, 82, 8N, described temperature detection end respectively with N number of temperature detecting module 61, 62, 6N is connected, described power switch drive end respectively with N number of driver module 41, 42, 4N is connected, N number of switch control terminal 81, 82, each switch control terminal in 8N and N number of switch control module 51, 52, each switch control module one_to_one corresponding in 5N is connected, and respectively with N number of temperature detecting module 61, 62, each temperature detecting module in 6N is connected.
According to an embodiment of the present utility model, when N is 2, as shown in Figure 2 or Figure 3, N number of coil panel module is the first coil disk module 11 and the second coil panel module 12, N number of power switch is the first power switch 31 such as IGBT1 and the second power switch 32 such as IGBT2, N number of driver module is the first driver module 41 and the second driver module 42, N number of switch control module is the first switch control module 51 and second switch control module 52, N number of temperature detecting module is the first temperature detecting module 61 and the second temperature detecting module 62, N number of switch control terminal is the first switch control terminal 81 and second switch control end 82 such as IGBT1 switch control terminal and IGBT2 switch control terminal.
As shown in Figure 2 or Figure 3, the first driver module 41 specifically comprises: the first resistance R1, the first triode Q1, the 3rd resistance R3, the second triode Q2, the 3rd triode Q3, the first electric capacity C1 and the 5th resistance R5.Wherein, one end of first resistance R1 is connected with power switch drive end such as IGBT drive end, and one end of the first resistance R1 is connected by the default power supply VCC of the second resistance R2 and first, the base stage of the first triode Q1 is connected with the other end of the first resistance R1, the grounded emitter of the first triode Q1, one end and first of 3rd resistance R3 is preset power supply VCC and is connected, and the other end of the 3rd resistance R3 is connected with the colelctor electrode of the first triode Q1; The base stage of the second triode Q2 is connected with the colelctor electrode of the first triode Q1, and the colelctor electrode of the second triode Q2 is preset power supply VCC by the 4th resistance R4 and first and is connected; The base stage of the 3rd triode Q3 is connected with the base stage of the second triode Q2, the grounded collector of the 3rd triode Q3, and the emitter stage of the 3rd triode Q3 is connected with the emitter stage of the second triode Q2; Between the base stage that first electric capacity C1 is connected in parallel on the 3rd triode Q3 and colelctor electrode, one end of 5th resistance R5 is connected with the node between the emitter stage of the 3rd triode Q3 and the emitter stage of the second triode Q2, and the other end of the 5th resistance R5 is extremely connected with the G of the control end such as IGBT1 of the first power switch 31.
Further, as shown in Figure 2 or Figure 3, the second driver module 42 specifically comprises: the 6th resistance R6, the 4th triode Q4, the 7th resistance R7, the 5th triode Q5, the 6th triode Q6, the second electric capacity C2 and the 8th resistance R8.Wherein, one end of 6th resistance R6 is connected with power switch drive end, and one end of the 6th resistance R6 is connected by the default power supply VCC of the second resistance R2 and first, the base stage of the 4th triode Q4 is connected with the other end of the 6th resistance R6, the grounded emitter of the 4th triode Q4; One end and first of 7th resistance R7 is preset power supply VCC and is connected, the other end of the 7th resistance R7 is connected with the colelctor electrode of the 4th triode Q4, the base stage of the 5th triode Q5 is connected with the colelctor electrode of the 4th triode Q4, and the colelctor electrode of the 5th triode Q5 is preset power supply VCC by the 4th resistance R4 and first and is connected; The base stage of the 6th triode Q6 is connected with the base stage of the 5th triode Q5, the grounded collector of the 6th triode Q6, and the emitter stage of the 6th triode Q6 is connected with the emitter stage of the 5th triode Q5; Between the base stage that second electric capacity C2 is connected in parallel on the 6th triode Q6 and colelctor electrode, one end of 8th resistance R8 is connected with the node between the emitter stage of the 6th triode Q6 and the emitter stage of the 5th triode Q5, and the other end of the 8th resistance R8 is extremely connected with the G of the control end such as IGBT2 of the second power switch 32.
In embodiment of the present utility model, as shown in Figure 2 or Figure 3, first driver module 41 also comprises the 9th resistance R9 in parallel and the first voltage-stabiliser tube ZD1, ground connection after one end of 9th resistance R9 is connected with the anode of the first voltage-stabiliser tube ZD1, is extremely connected with the G of the control end such as IGBT1 of the first power switch 31 after the other end of the 9th resistance R9 is connected with the negative electrode of the first voltage-stabiliser tube ZD1.And, second driver module 42 also comprises the tenth resistance R10 in parallel and the second voltage-stabiliser tube ZD2, ground connection after one end of tenth resistance R10 is connected with the anode of the second voltage-stabiliser tube ZD2, is extremely connected with the G of the control end such as IGBT2 of the second power switch 32 after the other end of the tenth resistance R10 is connected with the negative electrode of the second voltage-stabiliser tube ZD2.
According to an embodiment of the present utility model, as shown in Figure 2, the first switch control module 51 specifically comprises: the 11 resistance R11, the 7th triode Q7 and the 12 resistance R12.One end of 11 resistance R11 is connected with the second temperature detecting module 62 with the first switch control terminal 81 such as IGBT1 switch control terminal of controller 70 respectively, the base stage of the 7th triode Q7 is connected with the other end of the 11 resistance R11, the grounded emitter of the 7th triode Q7, the colelctor electrode of the 7th triode Q7 is connected with the base stage of the 3rd triode Q3, between the base stage that the 12 resistance R12 is connected in parallel on the 7th triode Q7 and emitter stage with the base stage of the second triode Q2.Further, as shown in Figure 2, second switch control module 52 specifically comprises: the 13 resistance R13, the 8th triode Q8 and the 14 resistance R14.One end of 13 resistance R13 is connected with the first temperature detecting module 61 with the second switch control end such as IGBT2 switch control terminal of controller 70 respectively, the base stage of the 8th triode Q8 is connected with the other end of the 13 resistance R13, the grounded emitter of the 8th triode Q8, the colelctor electrode of the 8th triode Q8 is connected with the base stage of the 6th triode Q6, between the base stage that the 14 resistance R14 is connected in parallel on the 8th triode Q8 and emitter stage with the base stage of the 5th triode Q5.
Wherein, when controller 70 is exported high level signal by the first switch control terminal such as IGBT1 switch control terminal and is passed through second switch control end such as IGBT2 switch control terminal output low level signal, 7th triode Q7 conducting stops output drive signal to make the first driver module 41, first power switch 31 such as IGBT1 quits work, 8th triode Q8 ends, the normal output drive signal of second driver module 42, second power switch 32 such as IGBT2 normally works, and, first temperature detecting module 61 quits work, second temperature detecting module 62 starts working the temperature detecting the second power switch 32 such as IGBT2.In like manner, when controller 70 is by the first switch control terminal such as IGBT1 switch control terminal output low level signal and by second switch control end such as IGBT2 switch control terminal output high level signal, 8th triode Q8 conducting stops output drive signal to make the second driver module 42, second power switch 32 such as IGBT2 quits work, 7th triode Q7 ends, the normal output drive signal of first driver module 41, first power switch 31 such as IGBT1 normally works, and, second temperature detecting module 62 quits work, first temperature detecting module 61 starts working the temperature detecting the first power switch 31 such as IGBT1.
That is, the control signal that controller 70 such as MCU is exported by the first switch control terminal such as IGBT1 switch control terminal is contrary with the control logic of control signal exported by second switch control end such as IGBT2 switch control terminal, namely when by the first switch control terminal, such as IGBT1 switch control terminal exports high level signal, by second switch control end such as IGBT2 switch control terminal output low level signal, during by the first switch control terminal such as IGBT1 switch control terminal output low level signal, high level signal is exported by second switch control end such as IGBT2 switch control terminal, specifically as shown in Figure 4.Therefore, in the present embodiment, in t1, t3 moment, the second power switch 32 such as IGBT2 normally works, and the second temperature detecting module 62 is also normally started working, and detects the temperature of the second power switch 32 such as IGBT2; In t2, t4 moment, the first power switch 31 such as IGBT1 normally works, and the first temperature detecting module 61 is also normally started working, and detects the temperature of the first power switch 31 such as IGBT1.
According to another embodiment of the present utility model, as shown in Figure 3, the first switch control module 51 specifically comprises: the 15 resistance R15, the 9th triode Q9, the 16 resistance R16, the 17 resistance R17 and the tenth triode Q10.One end of 15 resistance R15 is connected with the first temperature detecting module 61 with the first switch control terminal 81 such as IGBT1 switch control terminal of controller 70 respectively, the base stage of the 9th triode Q9 is connected with the other end of the 15 resistance R15, the grounded emitter of the 9th triode Q9, between the base stage that the 16 resistance R16 is connected in parallel on the 9th triode Q9 and emitter stage; One end and second of 17 resistance R17 is preset power vd D and is connected, and the other end of the 17 resistance R17 is connected with the colelctor electrode of the 9th triode Q9; The base stage of the tenth triode Q10 is connected with the colelctor electrode of the 9th triode Q9, the grounded emitter of the tenth triode Q10, and the colelctor electrode of the tenth triode Q10 is connected with the base stage of the 3rd triode Q3 with the base stage of the second triode Q2.Further, as shown in Figure 3, second switch control module 42 specifically comprises: the 18 resistance R18, the 11 triode Q11, the 19 resistance R19, the 20 resistance R20 and the 12 triode Q12.One end of 18 resistance R18 is connected with the second temperature detecting module 62 with the second switch control end such as IGBT2 switch control terminal of controller 70 respectively, the base stage of the 11 triode Q11 is connected with the other end of the 18 resistance R18, the grounded emitter of the 11 triode Q11, between the base stage that the 19 resistance R19 is connected in parallel on the 11 triode Q11 and emitter stage; One end and second of 20 resistance R20 is preset power vd D and is connected, and the other end of the 20 resistance R20 is connected with the colelctor electrode of the 11 triode Q11; The base stage of the 12 triode Q12 is connected with the colelctor electrode of the 11 triode Q11, the grounded emitter of the 12 triode Q12, and the colelctor electrode of the 12 triode Q12 is connected with the base stage of the 6th triode Q6 with the base stage of the 5th triode Q5.
Wherein, when controller 70 such as MCU is exported high level signal by the first switch control terminal 81 such as IGBT1 switch control terminal and is passed through second switch control end 82 such as IGBT2 switch control terminal output low level signal, 9th triode Q9 conducting and the tenth triode Q10 end, the normal output drive signal of first driver module 41, first power switch 31 such as IGBT1 normally works, 11 triode Q11 ends and the 12 triode Q12 conducting stops output drive signal to make the second driver module 42, second power switch 32 such as IGBT2 quits work, and, second temperature detecting module 62 quits work, first temperature detecting module 61 starts working the temperature detecting the first power switch 31 such as IGBT1.In like manner, when controller 70 such as MCU is by the first switch control terminal 81 such as IGBT1 switch control terminal output low level signal and by second switch control end 82 such as IGBT2 switch control terminal output high level signal, 11 triode Q11 conducting and the 12 triode Q12 end, the normal output drive signal of second driver module 42, second power switch 32 such as IGBT2 normally works, 9th triode Q9 ends and the tenth triode Q10 conducting stops output drive signal to make the first driver module 41, first power switch 31 such as IGBT1 quits work, and, first temperature detecting module 61 quits work, second temperature detecting module 62 starts working the temperature detecting the second power switch 32 such as IGBT2.
That is, the control signal that controller 70 such as MCU is exported by the first switch control terminal such as IGBT1 switch control terminal is contrary with the control logic of control signal exported by second switch control end such as IGBT2 switch control terminal, namely when by the first switch control terminal, such as IGBT1 switch control terminal exports high level signal, by second switch control end such as IGBT2 switch control terminal output low level signal, during by the first switch control terminal such as IGBT1 switch control terminal output low level signal, high level signal is exported by second switch control end such as IGBT2 switch control terminal, specifically as shown in Figure 5.Therefore, in the present embodiment, in t1, t3 moment, the first power switch 31 such as IGBT1 normally works, and the first temperature detecting module 61 is also normally started working, and detects the temperature of the first power switch 31 such as IGBT1; In t2, t4 moment, the second power switch 32 such as IGBT2 normally works, and the second temperature detecting module 62 is also normally started working, and detects the temperature of the second power switch 32 such as IGBT2.
In sum, in embodiment of the present utility model, select the selection controlling can control the while that power switch such as IGBT carrying out the port of work to detect power switch such as IGBT temperature, make the work of power switch such as IGBT and to carry out temperature detection work to the power switch worked such as IGBT synchronous, thus make two power switch such as IGBT alternations, corresponding temperature detecting module also hockets temperature detection, specifically as shown in Figure 2 or Figure 3.
According to an embodiment of the present utility model, as shown in Figure 2 or Figure 3, each temperature detecting module in N number of temperature detecting module such as the first temperature detecting module 61 and the second temperature detecting module 62 include temperature sensor, one end of described temperature sensor is connected by the switch control terminal of resistance with controller 70, the other end ground connection of described temperature sensor.
Particularly, as shown in Figure 2, first temperature detecting module 61 comprises IGBT1 sensor, one end of IGBT1 sensor is connected with the second switch control end 82 such as IGBT2 switch control terminal of controller 70 by resistance R21, the other end ground connection of IGBT1 sensor, when such as IGBT2 switch control terminal exports high level signal to second switch control end 82, IGBT1 sensor is started working; Second temperature detecting module 62 comprises IGBT2 sensor, one end of IGBT2 sensor is connected with the first switch control terminal 81 such as IGBT1 switch control terminal of controller 70 by resistance R22, the other end ground connection of IGBT2 sensor, when such as IGBT1 switch control terminal exports high level signal to the first switch control terminal 81, IGBT2 sensor is started working.
As shown in Figure 3, first temperature detecting module 61 comprises IGBT1 sensor, one end of IGBT1 sensor is connected with the first switch control terminal 81 such as IGBT1 switch control terminal of controller 70 by resistance R23, the other end ground connection of IGBT1 sensor, when such as IGBT1 switch control terminal exports high level signal to the first switch control terminal 81, IGBT1 sensor is started working; Second temperature detecting module 62 comprises IGBT2 sensor, one end of IGBT2 sensor is connected with the second switch control end 82 such as IGBT2 switch control terminal of controller 70 by resistance R24, the other end ground connection of IGBT2 sensor, when such as IGBT2 switch control terminal exports high level signal to second switch control end 82, IGBT2 sensor is started working.
According to another embodiment of the present utility model, as shown in Figure 6, first temperature detecting module comprises the first temperature sensor such as IGBT1 sensor, second temperature detecting module comprises the second temperature sensor such as IGBT2 sensor, above-mentioned control circuit also comprises controllable switch module 90, the control end of controllable switch module 90 is connected with first switch control terminal of controller 70 such as MCU or second switch control end, described first temperature sensor or described second temperature sensor is selected to carry out work under the control of the control signal that controllable switch module 90 is exported by described first switch control terminal or second switch control end at controller 70.Particularly, as shown in Figure 6, controllable switch module 90 comprises relay, the control end of controllable switch module 90 is connected with the first switch control terminal 81 such as IGBT1 switch control terminal of controller 70, when by the first switch control terminal 81, such as IGBT1 switch control terminal exports high level signal to controller 70, IGBT2 working sensor, the such as IGBT2 work of the second power switch 32, the second temperature detecting module 62 detects the temperature of the second power switch 32 such as IGBT2; When controller 70 is by the first switch control terminal 81 such as IGBT1 switch control terminal output low level signal, IGBT1 working sensor, the such as IGBT1 work of first power switch 31, the first temperature detecting module 61 detects the temperature of the first power switch 31 such as IGBT1.
According to the control circuit of the electric cooking pot of the utility model embodiment, correspondingly control each switch control module by each switch control terminal output control signal and whether carry out work to control each driver module, the driver module carrying out work drives corresponding power switch to carry out work, and export by each switch control terminal the temperature that control signal controls corresponding temperature detecting module to detect the power switch carrying out work, such as when being controlled corresponding switch control module by a switch control terminal output control signal and normally working to control corresponding driver module, the power switch that the driver module driven of normal work is corresponding carries out work, and the control signal that this switch control terminal exports controls a temperature detecting module carrys out the temperature that the power switch of work is carried out in corresponding detection simultaneously.Therefore, the control circuit of electric cooking pot of the present utility model can select power switch to carry out the chip port of work and the multiplexed port controlling to carry out this power switch temperature detection by controlling, thus greatly can save the chip port of controller, like this when chip port demand is many also without the need to increasing controller, not only greatly can reduce costs, the reliability of circuit can also be improved.
In addition, the utility model embodiment also proposed a kind of electric cooking pot, and it comprises the control circuit of above-mentioned electric cooking pot.Wherein, this electric cooking pot can be the household appliances such as electric cooker, electromagnetic oven, electric pressure cooking saucepan.
The electric cooking pot of the utility model embodiment can select power switch to carry out the chip port of work and the multiplexed port controlling to carry out this power switch temperature detection by controlling by its control circuit, thus greatly can save the chip port of controller, like this when chip port demand is many also without the need to increasing controller, not only greatly can reduce costs, the reliability of control circuit can also be improved.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalency thereof.
Claims (12)
1. a control circuit for electric cooking pot, is characterized in that, comprising:
N number of coil panel module, wherein, N be more than or equal to 2 integer;
Power module, described power module be connected with described N number of coil panel module respectively with give described N number of coil panel module for power supply;
N number of power switch, each power switch in described N number of power switch is connected to form N number of heater with each coil panel module one_to_one corresponding in described N number of coil panel module;
N number of driver module, each driver module in described N number of driver module is connected to drive described each power switch with each power switch one_to_one corresponding in described N number of power switch;
N number of switch control module, each switch control module in described N number of switch control module is connected to control described each driver module with each driver module one_to_one corresponding in described N number of driver module;
N number of temperature detecting module, each temperature detecting module in described N number of temperature detecting module detects the temperature of each power switch in described N number of power switch respectively;
Controller, described controller comprises temperature detection end, power switch drive end and N number of switch control terminal, described temperature detection end is connected with described N number of temperature detecting module respectively, described power switch drive end is connected with described N number of driver module respectively, each switch control terminal in described N number of switch control terminal is connected with each switch control module one_to_one corresponding in described N number of switch control module, and is connected with each temperature detecting module in N number of temperature detecting module respectively.
2. the control circuit of electric cooking pot as claimed in claim 1, is characterized in that, when N is 2, the first driver module specifically comprises:
First resistance, one end of described first resistance is connected with described power switch drive end, and one end of described first resistance is connected by the second resistance and the first default power supply;
First triode, the base stage of described first triode is connected with the other end of described first resistance, the grounded emitter of described first triode;
3rd resistance, one end and described first of described 3rd resistance is preset power supply and is connected, and the other end of described 3rd resistance is connected with the colelctor electrode of described first triode;
Second triode, the base stage of described second triode is connected with the colelctor electrode of described first triode, and the colelctor electrode of described second triode is preset power supply by the 4th resistance and described first and is connected;
3rd triode, the base stage of described 3rd triode is connected with the base stage of described second triode, the grounded collector of described 3rd triode, and the emitter stage of described 3rd triode is connected with the emitter stage of described second triode;
First electric capacity, described first Capacitance parallel connection is between the base stage and colelctor electrode of described 3rd triode;
5th resistance, one end of described 5th resistance is connected with the node between the emitter stage of described 3rd triode and the emitter stage of described second triode, and the other end of described 5th resistance is connected with the control end of the first power switch.
3. the control circuit of electric cooking pot as claimed in claim 2, is characterized in that, the second driver module specifically comprises:
6th resistance, one end of described 6th resistance is connected with described power switch drive end, and one end of described 6th resistance is connected by described second resistance and the described first default power supply;
4th triode, the base stage of described 4th triode is connected with the other end of described 6th resistance, the grounded emitter of described 4th triode;
7th resistance, one end and described first of described 7th resistance is preset power supply and is connected, and the other end of described 7th resistance is connected with the colelctor electrode of described 4th triode;
5th triode, the base stage of described 5th triode is connected with the colelctor electrode of described 4th triode, and the colelctor electrode of described 5th triode is preset power supply by described 4th resistance and described first and is connected;
6th triode, the base stage of described 6th triode is connected with the base stage of described 5th triode, the grounded collector of described 6th triode, and the emitter stage of described 6th triode is connected with the emitter stage of described 5th triode;
Second electric capacity, described second Capacitance parallel connection is between the base stage and colelctor electrode of described 6th triode;
8th resistance, one end of described 8th resistance is connected with the node between the emitter stage of described 6th triode and the emitter stage of described 5th triode, and the other end of described 8th resistance is connected with the control end of the second power switch.
4. the control circuit of electric cooking pot as claimed in claim 2, it is characterized in that, described first driver module also comprises the 9th resistance in parallel and the first voltage-stabiliser tube, ground connection after one end of described 9th resistance is connected with the anode of described first voltage-stabiliser tube, is connected with the control end of described first power switch after the other end of described 9th resistance is connected with the negative electrode of described first voltage-stabiliser tube.
5. the control circuit of electric cooking pot as claimed in claim 3, it is characterized in that, described second driver module also comprises the tenth resistance in parallel and the second voltage-stabiliser tube, ground connection after one end of described tenth resistance is connected with the anode of described second voltage-stabiliser tube, is connected with the control end of described second power switch after the other end of described tenth resistance is connected with the negative electrode of described second voltage-stabiliser tube.
6. the control circuit of electric cooking pot as claimed in claim 3, is characterized in that, the first switch control module specifically comprises:
11 resistance, one end of described 11 resistance is connected with the second temperature detecting module with the first switch control terminal of described controller respectively;
7th triode, the base stage of described 7th triode is connected with the other end of described 11 resistance, the grounded emitter of described 7th triode, and the colelctor electrode of described 7th triode is connected with the base stage of the base stage of described second triode with described 3rd triode;
12 resistance, described 12 resistor coupled in parallel is between the base stage and emitter stage of described 7th triode.
7. the control circuit of electric cooking pot as claimed in claim 6, is characterized in that, second switch control module specifically comprises:
13 resistance, one end of described 13 resistance is connected with the first temperature detecting module with the second switch control end of described controller respectively;
8th triode, the base stage of described 8th triode is connected with the other end of described 13 resistance, the grounded emitter of described 8th triode, and the colelctor electrode of described 8th triode is connected with the base stage of described 6th triode with the base stage of described 5th triode;
14 resistance, described 14 resistor coupled in parallel is between the base stage and emitter stage of described 8th triode;
Wherein, when described controller is by described first switch control terminal output high level signal and by described second switch control end output low level signal, described 7th triode ON stops output drive signal to make described first driver module, described first power switch quits work, described 8th triode cut-off, the normal output drive signal of described second driver module, described second power switch normally works, and, described first temperature detecting module quits work, described second temperature detecting module starts working the temperature detecting described second power switch.
8. the control circuit of electric cooking pot as claimed in claim 3, is characterized in that, the first switch control module specifically comprises:
15 resistance, one end of described 15 resistance is connected with the first temperature detecting module with the first switch control terminal of described controller respectively;
9th triode, the base stage of described 9th triode is connected with the other end of described 15 resistance, the grounded emitter of described 9th triode;
16 resistance, described 16 resistor coupled in parallel is between the base stage and emitter stage of described 9th triode;
17 resistance, one end and second of described 17 resistance is preset power supply and is connected, and the other end of described 17 resistance is connected with the colelctor electrode of described 9th triode;
Tenth triode, the base stage of described tenth triode is connected with the colelctor electrode of described 9th triode, the grounded emitter of described tenth triode, and the colelctor electrode of described tenth triode is connected with the base stage of the base stage of described second triode with described 3rd triode.
9. the control circuit of electric cooking pot as claimed in claim 8, is characterized in that, second switch control module specifically comprises:
18 resistance, one end of described 18 resistance is connected with the second temperature detecting module with the second switch control end of described controller respectively;
11 triode, the base stage of described 11 triode is connected with the other end of described 18 resistance, the grounded emitter of described 11 triode;
19 resistance, described 19 resistor coupled in parallel is between the base stage and emitter stage of described 11 triode;
20 resistance, one end and described second of described 20 resistance is preset power supply and is connected, and the other end of described 20 resistance is connected with the colelctor electrode of described 11 triode;
12 triode, the base stage of described 12 triode is connected with the colelctor electrode of described 11 triode, the grounded emitter of described 12 triode, the colelctor electrode of described 12 triode is connected with the base stage of described 6th triode with the base stage of described 5th triode;
Wherein, when described controller is by described first switch control terminal output high level signal and by described second switch control end output low level signal, described 9th triode ON and the cut-off of the tenth triode, the normal output drive signal of described first driver module, described first power switch normally works, described 11 triode cut-off and the 12 triode ON stop output drive signal to make described second driver module, described second power switch quits work, and, described second temperature detecting module quits work, described first temperature detecting module starts working the temperature detecting described first power switch.
10. the control circuit of electric cooking pot as claimed in any one of claims 1-9 wherein, it is characterized in that, each temperature detecting module in described N number of temperature detecting module includes temperature sensor, one end of described temperature sensor is connected with the switch control terminal of described controller, the other end ground connection of described temperature sensor.
The control circuit of 11. electric cooking pots as claimed in claim 2, it is characterized in that, first temperature detecting module comprises the first temperature sensor, second temperature detecting module comprises the second temperature sensor, described control circuit also comprises controllable switch module, the control end of described controllable switch module is connected with the first switch control terminal of described controller or second switch control end, described first temperature sensor or described second temperature sensor is selected to carry out work under the control of the control signal that described controllable switch module is exported by described first switch control terminal or second switch control end at described controller.
12. 1 kinds of electric cooking pots, is characterized in that, comprise the control circuit of the electric cooking pot according to any one of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743661.9U CN204329090U (en) | 2014-11-28 | 2014-11-28 | Electricity cooking pot and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743661.9U CN204329090U (en) | 2014-11-28 | 2014-11-28 | Electricity cooking pot and control circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204329090U true CN204329090U (en) | 2015-05-13 |
Family
ID=53165443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420743661.9U Withdrawn - After Issue CN204329090U (en) | 2014-11-28 | 2014-11-28 | Electricity cooking pot and control circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204329090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698229A (en) * | 2014-11-28 | 2016-06-22 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker and control circuit thereof |
-
2014
- 2014-11-28 CN CN201420743661.9U patent/CN204329090U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698229A (en) * | 2014-11-28 | 2016-06-22 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker and control circuit thereof |
| CN105698229B (en) * | 2014-11-28 | 2018-02-02 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooking pot and its control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205657861U (en) | Electromagnetic heating cooks device and drive circuit thereof | |
| CN204373006U (en) | Electricity cooking pot and control circuit thereof | |
| CN107013955A (en) | Electric cooking pot and its control method | |
| CN102240180B (en) | Circuit board for IH (Indirect Heating) rice cooker | |
| CN203457345U (en) | Electromagnetic heating device and control circuit thereof | |
| CN104279587A (en) | Control method of intelligent cloud convection heating and electromagnetic heating device | |
| CN104578743A (en) | Power supply control circuit | |
| CN106287863A (en) | Electromagnetic heater and control method thereof and control circuit | |
| CN204329090U (en) | Electricity cooking pot and control circuit thereof | |
| CN204438245U (en) | Electricity cooking pot and control circuit thereof | |
| CN204539515U (en) | Electricity cooking pot and control circuit thereof | |
| CN207491225U (en) | Heat-preservation control circuit and electric heating equipment | |
| CN204515451U (en) | Learning-oriented scene panel circuit | |
| CN105698229A (en) | Electric cooker and control circuit thereof | |
| CN105703772B (en) | AD detection circuit and electric cooking pot with it | |
| CN212281045U (en) | Double-heater control circuit and cooking utensil with double heaters | |
| CN110780109A (en) | Resistive load detection circuit and detection method | |
| CN204990051U (en) | Power supply circuit | |
| CN108966371A (en) | A kind of heating device and its method for heating and controlling | |
| CN204836609U (en) | Novel base circuit structure of electrical heating electrical apparatus | |
| CN105987412B (en) | The cooking methods of electric cooking pot and its control circuit and electric cooking pot | |
| CN206674226U (en) | Circuit system and cooking apparatus for IH heaters | |
| CN204442329U (en) | A kind of mechanical switch remote-control module and intelligent switch | |
| CN204438252U (en) | Electricity cooking pot and control circuit thereof | |
| CN207354241U (en) | The switch controlled circuit of electromagnetic heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150513 Effective date of abandoning: 20180202 |
|
| AV01 | Patent right actively abandoned |