CN204373006U - Electricity cooking pot and control circuit thereof - Google Patents
Electricity cooking pot and control circuit thereof Download PDFInfo
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- CN204373006U CN204373006U CN201420741139.7U CN201420741139U CN204373006U CN 204373006 U CN204373006 U CN 204373006U CN 201420741139 U CN201420741139 U CN 201420741139U CN 204373006 U CN204373006 U CN 204373006U
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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, N be more than or equal to 2 integer; Power module, power module is connected with N number of coil panel module respectively; N number of power switch, each power switch is connected to form N number of heater with each coil panel module one_to_one corresponding; N number of driver module, each driver module is connected to drive each power switch with each power switch one_to_one corresponding; N number of switch control module, each switch control module is connected to control each driver module with each driver module one_to_one corresponding; Controller, the power switch drive end of controller is connected with N number of driver module respectively, and controller exports control signal to control N number of switch control module by the switch control terminal of controller.This electric cooking pot and control circuit thereof, without the need to the duty adopting the adhesive of relay to control just energy control coil dish, can improve circuit reliability greatly.
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
When the products such as electricity cooking pot such as electric cooker, electromagnetic oven, electric pressure cooking saucepan adopt the IH computer heating control of multi-thread dish, each coil panel is connected with relay, is carried out the duty of controller coil panel by control relay adhesive.
But relay exists the problems such as mechanical life, thus the reliability of whole control circuit can be caused to reduce, affect the service life of the products such as electric cooking pot such as electric cooker, electromagnetic oven, electric pressure cooking saucepan.
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, without the need to the duty adopting the adhesive of relay to control just energy control coil dish, greatly can improve circuit reliability.
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; Controller, the power switch drive end of described controller is connected with described N number of driver module respectively, and described controller exports control signal to control described N number of switch control module by the switch control terminal of described controller.
According to the control circuit of electric cooking pot of the present utility model, by the switch control terminal output control signal of controller, corresponding control is carried out to each switch control module and whether carry out work to control each driver module, the driver module carrying out work drives corresponding power switch to carry out work, thus can control the duty of corresponding coil panel module coil dish.Therefore, the control circuit of electric cooking pot of the present utility model is without the need to adopting relay, thus the duty adhesive of relay being controlled to just energy control coil disk module coil dish need not be adopted, avoid the reliability that have impact on whole control circuit mechanical life of relay, circuit reliability is greatly enhanced, and can extend the service life of electric cooking pot.
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 switch control terminal of described controller comprises the first switch control terminal and second switch control end, and the first switch control module specifically comprises: the 11 resistance, and one end of described 11 resistance is connected with described first switch control terminal; 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.
Further, second switch control module specifically comprises: the 13 resistance, and one end of described 13 resistance is connected with described second switch control end; 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.
Or the switch control terminal of described controller is the first switch control terminal, and the first switch control module specifically comprises: the 15 resistance, and one end of described 15 resistance is connected with described first switch control terminal; 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; 18 resistance, one end of described 18 resistance is connected with the colelctor electrode of described 9th triode with the other end of described 17 resistance respectively; Tenth triode, the base stage of described tenth triode is connected with the other end of described 18 resistance, 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 19 resistance, and one end of described 19 resistance is connected with described first switch control terminal, 11 triode, the base stage of described 11 triode is connected with the other end of described 19 resistance, the grounded emitter of described 11 triode, the colelctor electrode of described 11 triode is connected with the base stage of described 6th triode with the base stage of described 5th triode, 20 resistance, described 20 resistor coupled in parallel is between the base stage and emitter stage of described 11 triode, wherein, when described controller exports high level signal by described first switch control terminal, 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 ON stops output drive signal to make described second driver module, described second power switch quits work, when described controller is by described first switch control terminal output low level signal, described 9th triode cut-off and the tenth triode ON stop output drive signal to make described first driver module, described first power switch quits work, described 11 triode cut-off, the normal output drive signal of described second driver module, described second power switch normally works.
Or the switch control terminal of described controller is second switch control end, and second switch control module specifically comprises: the 21 resistance, and one end of described 21 resistance is connected with described second switch control end; 12 triode, the base stage of described 12 triode is connected with the other end of described 21 resistance, the grounded emitter of described 12 triode; 22 resistance, described 22 resistor coupled in parallel is between the base stage and emitter stage of described 12 triode; 23 resistance, one end and second of described 23 resistance is preset power supply and is connected, and the other end of described 23 resistance is connected with the colelctor electrode of described 12 triode; 24 resistance, one end of described 24 resistance is connected with the colelctor electrode of described 12 triode with the other end of the 23 resistance respectively; 13 triode, the base stage of described 13 triode is connected with the other end of described 24 resistance, the grounded emitter of described 13 triode, the colelctor electrode of described 13 triode is connected with the base stage of described 6th triode with the base stage of described 5th triode.
First switch control module specifically comprises: the 25 resistance, and one end of described 25 resistance is connected with described second switch control end, 14 triode, the base stage of described 14 triode is connected with the other end of described 25 resistance, the grounded emitter of described 14 triode, the colelctor electrode of described 14 triode is connected with the base stage of the base stage of described second triode with described 3rd triode, 26 resistance, described 26 resistor coupled in parallel is between the base stage and emitter stage of described 14 triode, wherein, when described controller exports high level signal by described second switch control end, described 12 triode ON and the cut-off of the 13 triode, the normal output drive signal of described second driver module, described second power switch normally works, described 14 triode ON stops output drive signal to make described first driver module, described first power switch quits work, when described controller is by described second switch control end output low level signal, described 12 triode cut-off and the 13 triode ON stop output drive signal to make described second driver module, described second power switch quits work, described 14 triode cut-off, the normal output drive signal of described first driver module, described first power switch normally works.
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 is because its control circuit is without the need to adopting relay, thus the duty adhesive of relay being controlled to just energy control coil disk module coil dish need not be adopted, avoid the reliability that have impact on whole control circuit mechanical life of relay, greatly improve the reliability of circuit, therefore, the service life of electricity cooking pot also can be extended, and meets the demand of user.
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; And
Fig. 4 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, 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 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 each driver module; The power switch drive end of controller 70 such as IGBT drive end respectively with N number of driver module 41,42 ..., 4N be connected, controller 70 by the switch control terminal of controller such as N number of switch control terminal 81,82 ..., 8N export control signal with to N number of switch control module 51,52 ..., 5N controls, to control the whether normal output drive signal of corresponding driver module, thus realize the duty controlling corresponding power switch.Wherein, controller 70 by switch control terminal such as N number of switch control terminal 81,82 ..., 8N export control signal can be low and high level signal, also can be and the corresponding power switch pulse signal that such as IGBT drive singal is synchronous.
According to an embodiment of the present utility model, when N is 2, as shown in Fig. 2 or Fig. 3, Fig. 4, 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, and N number of switch control module is the first switch control module 51 and second switch control module 52.
As shown in Fig. 2 or Fig. 3, Fig. 4, 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 Fig. 2 or Fig. 3, Fig. 4, 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 Fig. 2 or Fig. 3, Fig. 4, 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 switch control terminal of controller 70 comprises the first switch control terminal 81 such as IGBT1 switch control terminal and second switch control end 82 such as IGBT2 switch control terminal, and 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 and the first switch control terminal 81 such as IGBT1 switch control terminal, 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 second switch control end such as IGBT2 switch control terminal, 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, the second power switch 32 such as IGBT2 normally works.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, the first power switch 31 such as IGBT1 normally works.
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.
According to another embodiment of the present utility model, as shown in Figure 3, the switch control terminal of controller 70 is the first switch control terminal such as IGBT1 switch control terminal, and the first switch control module 51 specifically comprises: the 15 resistance R15, the 9th triode Q9, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18 and the tenth triode Q10.One end of 15 resistance R15 is connected with the first switch control terminal 81 such as IGBT1 switch control terminal, 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; One end of 18 resistance R18 is connected with the colelctor electrode of the 9th triode Q9 with the other end of the 17 resistance R17 respectively, the base stage of the tenth triode Q10 is connected with the other end of the 18 resistance, the grounded emitter of the tenth triode Q10, 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 19 resistance R19, the 11 triode Q11 and the 20 resistance R20.One end of 19 resistance R19 is connected with the first switch control terminal such as IGBT1 switch control terminal, the base stage of the 11 triode Q11 is connected with the other end of the 19 resistance R19, the grounded emitter of the 11 triode Q11, the colelctor electrode of the 11 triode Q11 is connected with the base stage of the 6th triode Q6 with the base stage of the 5th triode Q5; Between the base stage that 20 resistance R20 is connected in parallel on the 11 triode Q11 and emitter stage.
Wherein, when controller 70 such as MCU is by the first switch control terminal 81 such as IGBT1 switch control terminal output high 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 conducting stops output drive signal to make the second driver module 42, second power switch 32 such as IGBT2 quits work, when controller 70 such as MCU is by the first switch control terminal 81 such as IGBT1 switch control terminal output low level signal, 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, 11 triode Q11 ends, the normal output drive signal of second driver module 42, second power switch 32 such as IGBT2 normally works.
According to another embodiment of the present utility model, as shown in Figure 4, the switch control terminal of controller 70 is second switch control end 82 such as IGBT2 switch control terminal, and second switch control module 52 specifically comprises: the 21 resistance R21, the 12 triode Q12, the 22 resistance R22, the 23 resistance R23, the 24 resistance R24 and the 13 triode Q13.One end of 21 resistance R21 is connected with second switch control end 82 such as IGBT2 switch control terminal, the base stage of the 12 triode Q12 is connected with the other end of the 21 resistance R21, the grounded emitter of the 12 triode Q12, between the base stage that the 22 resistance R22 is connected in parallel on the 12 triode Q12 and emitter stage; One end and second of 23 resistance R23 is preset power vd D and is connected, the other end of the 23 resistance R23 is connected with the colelctor electrode of the 12 triode Q12, one end of 24 resistance R24 is connected with the colelctor electrode of the 12 triode Q12 with the other end of the 23 resistance R23 respectively, the base stage of the 13 triode Q13 is connected with the other end of the 24 resistance R24, the grounded emitter of the 13 triode Q13, the colelctor electrode of the 13 triode Q13 is connected with the base stage of the 6th triode Q6 with the base stage of the 5th triode Q5.Further, as shown in Figure 4, the first switch control module 51 specifically comprises: the 25 resistance R25, the 14 triode Q14 and the 26 resistance R26.One end of 25 resistance R25 is connected with second switch control end 82 such as IGBT2 switch control terminal, the base stage of the 14 triode Q14 is connected with the other end of the 25 resistance R25, the grounded emitter of the 14 triode Q14, the colelctor electrode of the 14 triode Q14 is connected with the base stage of the 3rd triode Q3 with the base stage of the second triode Q2, between the base stage that the 26 resistance R26 is connected in parallel on the 14 triode Q14 and emitter stage.
Wherein, when controller 70 is by second switch control end 82 such as IGBT2 switch control terminal output high level signal, 12 triode Q12 conducting and the 13 triode Q13 end, the normal output drive signal of second driver module 42, second power switch 32 such as IGBT2 normally works, 14 triode Q14 conducting stops output drive signal to make the first driver module 41, first power switch 31 such as IGBT1 quits work, when controller 70 is by second switch control end 82 such as IGBT2 switch control terminal output low level signal, 12 triode Q12 ends and the 13 triode Q13 conducting stops output drive signal to make the second driver module 42, second power switch 31 such as IGBT2 quits work, 14 triode Q14 ends, the normal output drive signal of first driver module 41, first power switch 31 such as IGBT1 normally works.
In sum, the control circuit of the electric cooking pot of the utility model embodiment controls drive singal whether be applied to power switch such as IGBT by being arranged in series a switch control module on drive circuit, thus control the duty of power switch such as IGBT, realize the duty of control coil disk module coil dish, the duty therefore without the need to adopting the adhesive of relay to control just energy control coil dish.
According to the control circuit of the electric cooking pot of the utility model embodiment, by the switch control terminal output control signal of controller, corresponding control is carried out to each switch control module and whether carry out work to control each driver module, the driver module carrying out work drives corresponding power switch to carry out work, thus can control the duty of corresponding coil panel module coil dish.Therefore, the control circuit of the electric cooking pot of the utility model embodiment is without the need to adopting relay, thus the duty adhesive of relay being controlled to just energy control coil disk module coil dish need not be adopted, avoid the reliability that have impact on whole control circuit mechanical life of relay, circuit reliability is greatly enhanced, and can extend the service life of electric cooking pot.
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 is because its control circuit is without the need to adopting relay, thus the duty adhesive of relay being controlled to just energy control coil disk module coil dish need not be adopted, avoid the reliability that have impact on whole control circuit mechanical life of relay, greatly improve the reliability of circuit, therefore, the service life of electricity cooking pot also can be extended, and meets the demand of user.
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;
Controller, the power switch drive end of described controller is connected with described N number of driver module respectively, and described controller exports control signal to control described N number of switch control module by the switch control terminal of described controller.
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 switch control terminal of described controller comprises the first switch control terminal and second switch control end, and the first switch control module specifically comprises:
11 resistance, one end of described 11 resistance is connected with described first switch control terminal;
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 described second switch control end;
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.
8. the control circuit of electric cooking pot as claimed in claim 3, is characterized in that, the switch control terminal of described controller is the first switch control terminal, and the first switch control module specifically comprises:
15 resistance, one end of described 15 resistance is connected with described first switch control terminal;
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;
18 resistance, one end of described 18 resistance is connected with the colelctor electrode of described 9th triode with the other end of described 17 resistance respectively;
Tenth triode, the base stage of described tenth triode is connected with the other end of described 18 resistance, 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:
19 resistance, one end of described 19 resistance is connected with described first switch control terminal;
11 triode, the base stage of described 11 triode is connected with the other end of described 19 resistance, the grounded emitter of described 11 triode, the colelctor electrode of described 11 triode is connected with the base stage of described 6th triode with the base stage of described 5th triode;
20 resistance, described 20 resistor coupled in parallel is between the base stage and emitter stage of described 11 triode;
Wherein, when described controller exports high level signal by described first switch control terminal, 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 ON stops output drive signal to make described second driver module, described second power switch quits work, when described controller is by described first switch control terminal output low level signal, described 9th triode cut-off and the tenth triode ON stop output drive signal to make described first driver module, described first power switch quits work, described 11 triode cut-off, the normal output drive signal of described second driver module, described second power switch normally works.
10. the control circuit of electric cooking pot as claimed in claim 3, is characterized in that, the switch control terminal of described controller is second switch control end, and second switch control module specifically comprises:
21 resistance, one end of described 21 resistance is connected with described second switch control end;
12 triode, the base stage of described 12 triode is connected with the other end of described 21 resistance, the grounded emitter of described 12 triode;
22 resistance, described 22 resistor coupled in parallel is between the base stage and emitter stage of described 12 triode;
23 resistance, one end and second of described 23 resistance is preset power supply and is connected, and the other end of described 23 resistance is connected with the colelctor electrode of described 12 triode;
24 resistance, one end of described 24 resistance is connected with the colelctor electrode of described 12 triode with the other end of the 23 resistance respectively;
13 triode, the base stage of described 13 triode is connected with the other end of described 24 resistance, the grounded emitter of described 13 triode, the colelctor electrode of described 13 triode is connected with the base stage of described 6th triode with the base stage of described 5th triode.
The control circuit of 11. electric cooking pots as claimed in claim 10, it is characterized in that, the first switch control module specifically comprises:
25 resistance, one end of described 25 resistance is connected with described second switch control end;
14 triode, the base stage of described 14 triode is connected with the other end of described 25 resistance, the grounded emitter of described 14 triode, the colelctor electrode of described 14 triode is connected with the base stage of the base stage of described second triode with described 3rd triode;
26 resistance, described 26 resistor coupled in parallel is between the base stage and emitter stage of described 14 triode;
Wherein, when described controller exports high level signal by described second switch control end, described 12 triode ON and the cut-off of the 13 triode, the normal output drive signal of described second driver module, described second power switch normally works, described 14 triode ON stops output drive signal to make described first driver module, described first power switch quits work, when described controller is by described second switch control end output low level signal, described 12 triode cut-off and the 13 triode ON stop output drive signal to make described second driver module, described second power switch quits work, described 14 triode cut-off, the normal output drive signal of described first driver module, described first power switch normally works.
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.
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| CN201420741139.7U CN204373006U (en) | 2014-11-28 | 2014-11-28 | Electricity cooking pot and control circuit thereof |
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| CN201420741139.7U CN204373006U (en) | 2014-11-28 | 2014-11-28 | Electricity cooking pot and control circuit thereof |
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| CN204373006U true CN204373006U (en) | 2015-06-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108937602A (en) * | 2017-05-26 | 2018-12-07 | 佛山市顺德区美的电热电器制造有限公司 | The cooker body and electric cooker of electric cooker |
| CN108966391A (en) * | 2017-05-18 | 2018-12-07 | 佛山市顺德区美的电热电器制造有限公司 | The drive control circuit and electromagnetic heating system of IGBT in electromagnetic heating system |
| CN109195240A (en) * | 2018-10-25 | 2019-01-11 | 珠海格力电器股份有限公司 | IGBT control circuit, control method, the control circuit of heating electrical appliance, heating electrical appliance |
| CN109842308A (en) * | 2017-11-29 | 2019-06-04 | 佛山市顺德区美的电热电器制造有限公司 | The control device and method of electromagnetism cooking pot and its power switch tube |
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2014
- 2014-11-28 CN CN201420741139.7U patent/CN204373006U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108966391A (en) * | 2017-05-18 | 2018-12-07 | 佛山市顺德区美的电热电器制造有限公司 | The drive control circuit and electromagnetic heating system of IGBT in electromagnetic heating system |
| CN108937602A (en) * | 2017-05-26 | 2018-12-07 | 佛山市顺德区美的电热电器制造有限公司 | The cooker body and electric cooker of electric cooker |
| CN108937602B (en) * | 2017-05-26 | 2023-09-01 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker body and electric cooker |
| CN109842308A (en) * | 2017-11-29 | 2019-06-04 | 佛山市顺德区美的电热电器制造有限公司 | The control device and method of electromagnetism cooking pot and its power switch tube |
| CN109195240A (en) * | 2018-10-25 | 2019-01-11 | 珠海格力电器股份有限公司 | IGBT control circuit, control method, the control circuit of heating electrical appliance, heating electrical appliance |
| CN109195240B (en) * | 2018-10-25 | 2024-04-09 | 珠海格力电器股份有限公司 | IGBT control circuit, control method, control circuit of heating electric appliance and heating electric appliance |
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