CN109842968A - Electromagnetic heating system and its method for heating and controlling, control device - Google Patents
Electromagnetic heating system and its method for heating and controlling, control device Download PDFInfo
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- CN109842968A CN109842968A CN201711227476.9A CN201711227476A CN109842968A CN 109842968 A CN109842968 A CN 109842968A CN 201711227476 A CN201711227476 A CN 201711227476A CN 109842968 A CN109842968 A CN 109842968A
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Abstract
The invention discloses a kind of electromagnetic heating system and its method for heating and controlling, control device, the method for heating and controlling is the following steps are included: obtain the input voltage value of electromagnetic heating system and the working current value of power switch tube；Judge whether input voltage value is less than preset voltage value；If it is, being updated according to target current value of the input voltage value to power switch tube to obtain first object current value；And it is adjusted according to duty ratio of the current differential between working current value and first object current value to the power control signal of power switch tube.The method for heating and controlling of the embodiment of the present invention adjusts heating power according to input voltage value in low-voltage heating, realizes the normal heating of system under low-voltage.
Description
Technical field
The present invention relates to field of home appliance technology, in particular to a kind of method for heating and controlling of electromagnetic heating system, one
The heating control apparatus and a kind of electromagnetic heating system with the heating control apparatus of kind electromagnetic heating system.
Background technique
In some areas, since power supply system is not very stable, it is easy to lead to occur voltage reduction in peak of power consumption
The phenomenon that (e.g., being reduced to 160V or so).However, some electromagnetic ovens for reliability design, are generally used in the voltage section solid
Fixed power gear operation (generally with the operation of highest gear, using fixed current control), regardless of user's regulation power
The heating power of gear, electromagnetic oven remains unchanged always, thus causes user under low-voltage that can not carry out power tune to electromagnetic oven
Section.
Summary of the invention
One of the technical issues of the present invention is directed at least solve in the related technology to a certain extent.For this purpose, of the invention
First purpose is to propose a kind of method for heating and controlling of electromagnetic heating system, in low-voltage heating, according to input voltage
Value adjusts heating power, realizes the normal heating of system under low-voltage.
Second object of the present invention is to propose a kind of storage medium.
Third object of the present invention is to propose a kind of heating control apparatus of electromagnetic heating system.
Fourth object of the present invention is to propose a kind of electromagnetic heating system.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of computer heating control side of electromagnetic heating system
Method, the electromagnetic heating system include heating coil, resonant capacitance and power switch tube, and the method for heating and controlling includes following
Step: the input voltage value of the electromagnetic heating system and the working current value of the power switch tube are obtained；Judge described defeated
Enter whether voltage value is less than preset voltage value；If the input voltage value is less than the preset voltage value, according to described defeated
Enter voltage value to be updated the target current value of the power switch tube to obtain first object current value；And according to described
Current differential between working current value and the first object current value is to the power control signal of the power switch tube
Duty ratio is adjusted.
The method for heating and controlling of electromagnetic heating system according to an embodiment of the present invention, acquisition electromagnetic heating system is defeated first
Enter the working current value of voltage value and power switch tube, then judge whether input voltage value is less than preset voltage value, and defeated
When entering voltage value less than preset voltage value, it is updated according to target current value of the input voltage value to power switch tube to obtain
First object current value, and according to the current differential between working current value and first object current value to the function of power switch tube
The duty ratio of rate control signal is adjusted.This method can adjust heating according to input voltage value when low-voltage is heated
Power realizes the normal heating of system under low-voltage.
In addition, the method for heating and controlling of electromagnetic heating system according to the above embodiment of the present invention can also have it is following attached
The technical characteristic added:
According to one embodiment of present invention, the target current value of the power switch tube is turned up to obtain described first
Target current value, and the first object current value is less than default maximum allowed current value.
According to one embodiment of present invention, the method for heating and controlling of above-mentioned electromagnetic heating system, further includes: obtain institute
The working frequency of electromagnetic heating system is stated, and judges whether the working frequency is greater than predeterminated frequency；If the working frequency
Less than or equal to the predeterminated frequency, then the first object current value is turned down first pre-set current value to obtain the second target electricity
Flow valuve, and according to the current differential between the working current value and second target current value to the power switch tube
The duty ratio of power control signal is adjusted.
According to one embodiment of present invention, the method for heating and controlling of above-mentioned electromagnetic heating system, further includes: obtain institute
The temperature value of power switch tube and the temperature value of the electromagnetic heating system are stated, and judges that the temperature value of the power switch tube is
It is no to be greater than the first preset temperature value and judge whether the temperature value of the electromagnetic heating system is greater than the second preset temperature value；If
The temperature value of the power switch tube is greater than first preset temperature value or the temperature value of the electromagnetic heating system is greater than
Second preset temperature value then turns the first object current value down second pre-set current value to obtain third target current
Value；According to the current differential between the working current value and the third target current value to the power of the power switch tube
The duty ratio of control signal is adjusted.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of storage medium, applies journey for storing
Sequence, the application program are used to execute the method for heating and controlling of above-mentioned electromagnetic heating system.
The storage medium of the embodiment of the present invention can by executing the method for heating and controlling of above-mentioned electromagnetic heating system
In low-voltage heating, heating power is adjusted according to input voltage value, realizes the normal heating of system under low-voltage.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of computer heating control dress of electromagnetic heating system
It sets, the electromagnetic heating system includes heating coil, resonant capacitance and power switch tube, and the heating control apparatus includes: electricity
Pressure obtains module, for obtaining the input voltage value of the electromagnetic heating system；Electric current obtains module, for obtaining the power
The working current value of switching tube；Control module, the control module obtains module with the voltage respectively, the electric current obtains mould
Block is connected, and the control module is used to judge whether the input voltage value is less than preset voltage value, and in the input voltage
Value is updated when being less than the preset voltage value according to target current value of the input voltage value to the power switch tube
To obtain first object current value, and according to the current differential pair between the working current value and the first object current value
The duty ratio of the power control signal of the power switch tube is adjusted.
The heating control apparatus of electromagnetic heating system according to an embodiment of the present invention obtains module by voltage and obtains electromagnetism
The input voltage value of heating system, and the working current value that module obtains power switch tube is obtained by electric current, then pass through control
Molding block judges whether input voltage value is less than preset voltage value, and when input voltage value is less than preset voltage value according to input
Voltage value is updated the target current value of power switch tube to obtain first object current value, and according to working current value with
The duty ratio of the power control signal of power switch tube is adjusted in current differential between first object current value.The device
Heating power can be adjusted according to input voltage value, realizes the normal heating of system under low-voltage when low-voltage is heated.
In addition, the heating control apparatus of electromagnetic heating system according to the above embodiment of the present invention can also have it is following attached
The technical characteristic added:
According to one embodiment of present invention, the control module by the target current value of the power switch tube be turned up with
The first object current value is obtained, and the first object current value is less than default maximum allowed current value.
According to one embodiment of present invention, the heating control apparatus of above-mentioned electromagnetic heating system, further includes: frequency obtains
Modulus block, for obtaining the working frequency of the electromagnetic heating system；The control module is also used to judge the working frequency
Whether predeterminated frequency is greater than, and when the working frequency is less than or equal to the predeterminated frequency by the first object current value tune
Small first pre-set current value is to obtain the second target current value, and according to the working current value and second target current value
Between current differential the duty ratio of the power control signal of the power switch tube is adjusted.
According to one embodiment of present invention, the frequency acquisition module includes synchronization signal detection circuit, the synchronization
The input terminal of signal deteching circuit is corresponding with the both ends of the resonant capacitance to be connected, the output end of the synchronization signal detection circuit
It is connected with the control module, the frequency acquisition module obtains the electromagnetic heating system by the synchronization signal detection circuit
The working frequency of system.
According to one embodiment of present invention, the heating control apparatus of above-mentioned electromagnetic heating system, further includes: the first temperature
Degree obtains module, for obtaining the temperature value of the power switch tube；Second temperature obtains module, adds for obtaining the electromagnetism
The temperature value of hot systems；It is default to be also used to judge whether the temperature value of the power switch tube is greater than first for the control module
Temperature value and judge whether the temperature value of the electromagnetic heating system is greater than the second preset temperature value, wherein if the power
The temperature value of switching tube is greater than first preset temperature value or the temperature value of the electromagnetic heating system is greater than described second
Preset temperature value, the control module then turn the first object current value down second pre-set current value to obtain third target
Current value, and according to the current differential between the working current value and the third target current value to the power switch tube
The duty ratio of power control signal be adjusted.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of electromagnetic heating system comprising above-mentioned
Heating control apparatus.
The electromagnetic heating system of the embodiment of the present invention, by above-mentioned heating control apparatus, can when low-voltage heats,
Heating power is adjusted according to input voltage value, realizes the normal heating of system under low-voltage.
Detailed description of the invention
Fig. 1 is the flow chart of the method for heating and controlling of electromagnetic heating system according to an embodiment of the present invention；
Fig. 2 is the schematic diagram of electromagnetic heating system according to an embodiment of the invention；
Fig. 3 is the flow chart of the method for heating and controlling of the electromagnetic heating system of a specific example according to the present invention；And
Fig. 4 is the block diagram of the heating control apparatus of electromagnetic heating system according to an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Method for heating and controlling, the electricity of the electromagnetic heating system proposed according to embodiments of the present invention described with reference to the accompanying drawings
The heating control apparatus of magnetic heating system and electromagnetic heating system with the heating control apparatus.
Fig. 1 is the flow chart of the method for heating and controlling of electromagnetic heating system according to an embodiment of the present invention.Of the invention
In embodiment, electromagnetic heating system may include heating coil, resonant capacitance and power switch tube.As shown in Figure 1, the present invention is implemented
The method for heating and controlling of the electromagnetic heating system of example can comprise the following steps that
S1 obtains the input voltage value of electromagnetic heating system and the working current value of power switch tube.
Specifically, by taking electromagnetic heating system shown in Fig. 2 as an example.
As shown in Fig. 2, can obtain module by the voltage being arranged between the end L of alternating current input power supplying and N-terminal obtains electricity
The input voltage value of magnetic heating system.Wherein, it may include clamp diode D1, the second diode D2, third that voltage, which obtains module,
The anode of diode D3, the 6th resistance R6, the 7th resistance R7, the 5th capacitor C5 and the 6th capacitor C6, the second diode D2 pass through
Protective tube F1 is connected with the end L of alternating current input power supplying, and the anode of third diode D3 is connected with the N-terminal of alternating current input power supplying, the
The cathode of two diode D2 and the cathode of third diode D3 are connected after being connected with one end of the 6th resistance R6, the 6th resistance R6's
The other end is connected with one end of the 7th resistance R7, and the other end of the 7th resistance R7 is grounded GND, the 5th capacitor C5 and the 6th capacitor C6
It is connected in parallel respectively with the 7th resistance R7, the cathode of clamp diode D1 is connected with default power vd D, the sun of clamp diode D1
Pole is connected with the other end of the 6th resistance R6, one end of the 7th resistance R7 and the voltage detection terminal of control module respectively.
When electromagnetic heating system works on power, the second diode D2 and third diode D3 input alternating current input power supplying
AC rectification be direct current, then control module by obtain the 6th resistance R6 and the 7th resistance R7 tie point at electricity
It presses to obtain the input voltage value of electromagnetic heating system.
In addition, as shown in Fig. 2, electricity of the setting between the emitter and ground GND of power switch tube Q (such as IGBT) can be passed through
Stream obtains the working current value that module obtains power switch tube.Wherein, it may include the 5th resistance R5 (e.g., health that electric current, which obtains module,
Copper wire) and sample circuit, one end of the 5th resistance R5 emitter phase with one end of sample circuit and power switch tube Q respectively
Even, the other end of the 5th resistance R5 is grounded GND, and the other end of sample circuit is connected with the current detecting end of control module.
When electromagnetic heating system works on power, control module obtains the electricity of one end of the 5th resistance R5 by sample circuit
Then pressure calculates the working current value for obtaining power switch tube according to the voltage.
S2, judges whether input voltage value is less than preset voltage value.Wherein, preset voltage value can carry out according to the actual situation
Calibration, for example, preset voltage value can be 160V.
S3, if input voltage value is less than preset voltage value, according to input voltage value to the target electricity of power switch tube
Flow valuve is updated to obtain first object current value.
In a specific example of the invention, the target current value of power switch tube refers to volume corresponding with power gear
Constant current value.For example, can in electromagnetic heating system storage power gear relationship corresponding with target current value, as shown in table 1.
Table 1
Be given in Table 1 multiple power gears, respectively 300W, 500W, 800W, 1000W, 1400W, 1600W,
1800W and 2100W, wherein 1000W, 1400W, 1600W, 1800W and 2100W are high power gear, corresponding target current value
Respectively M, N, X, Y and Z, and M < N < X < Y < Z, and 300W, 500W and 800W are low-power gear, corresponding target electricity
Flow valuve is M, and tapping mode mode used by difference is is different, for example, different low-power gears corresponds to different add
Hot time and stopping heating time.
After user, which passes through the human-computer interaction interface being arranged on electromagnetic heating system corresponding product, selects power gear, control
The power gear selected according to user is obtained corresponding target current value by molding block from preset table 1, for example, when user selects
Power gear be 1000W when, corresponding target current value be M, then control module opens power according to the target current value
It closes pipe to be controlled, to be heated.And during being controlled according to target current value power switch tube, if electric
The input voltage value of magnetic heating system is less than preset voltage value, then according to input voltage value to the target current value of power switch tube
It is updated to obtain first object current value.
According to one embodiment of present invention, the target current value of power switch tube is turned up, to obtain first object electricity
Flow valuve, and first object current value is less than default maximum allowed current value.Wherein, presetting maximum allowed current value can be according to family
It is set with socket load current value, such as can be 10A, it is possible thereby to guarantee that the working current value of power switch tube does not surpass
Limit value.
That is, during being controlled according to target current value power switch tube, if electromagnetic heating system
The input voltage value of system is less than preset voltage value (e.g., 160V), then explanation is currently at low-voltage state, can according to P=U*I
Know, when input voltage value is less than preset voltage value, heating power can also reduce accordingly, so at this time can be according to input voltage
Value is turned up by the target current value of power switch tube, so that system can be heated with high power.Wherein, by power switch
It is not unconfined height-regulating, it is also necessary to consider route and power switch tube is during the target current value of pipe is turned up
It is no to be able to bear, to prevent power switch tube overcurrent damage etc..
S4, according to the current differential between working current value and first object current value to the power control of power switch tube
The duty ratio of signal is adjusted.
Specifically, the target current value of power switch tube is being turned up to obtain first object electric current according to input voltage value
After value, closed loop adjusting is carried out also according to the working current value of power switch tube, such as according to working current value and first object electric current
The width (that is, duty ratio of power control signal) of PPG control signal is adjusted in current differential between value, and according to tune
PPG control signal after section controls control power switch tube, the output of heating power is turned up, thus at low voltage
Heating power is turned up according to input voltage value, enables the system to normal heating.In this way, even if user to target power value into
Row is adjusted, which can also be adjusted the heating power of system according to the target power value and input voltage value, is protected
Card system can realize different capacity heating according to user demand and virtual voltage situation, and be turned up to target current
When, also target current value is limited, to guarantee that the working current value of power switch tube does not transfinite value, guarantees power switch tube
Deng not being damaged.
Further, according to one embodiment of present invention, the method for heating and controlling of above-mentioned electromagnetic heating system may be used also
It include: to obtain the working frequency of electromagnetic heating system, and judge whether working frequency is greater than predeterminated frequency；If working frequency is small
In being equal to predeterminated frequency, then first object current value is turned down first pre-set current value to obtain the second target current value, and root
According to the current differential between working current value and the second target current value to the duty ratio of the power control signal of power switch tube
It is adjusted.Wherein, predeterminated frequency can be determined according to the frequency of auditory perceptual sound, such as the pole of auditory perceptual sound frequency
Limit is 20kHz, then the predeterminated frequency can be set to 20kHz；First pre-set current value can be fixed value or basis
Input voltage value is selected, and wherein input voltage value is smaller, corresponding first pre-set current value is bigger, for example, first is pre-
If current value can be 5 AD values.
Specifically, during target current value is adjusted according to input voltage value, when target current value is adjusted
Gao Shi, corresponding output power will be raised, and likely result in the working frequency of electromagnetic heating system at this time lower than 20kHz, thus
Cause electromagnetic noise.Wherein, the working frequency of electromagnetic heating system refers to the resonance frequency of electromagnetic heating system, can specifically pass through
Synchronization signal detection circuit shown in Fig. 2 obtains.
As shown in Fig. 2, synchronization signal detection circuit may include the first detection circuit, the second detection circuit and comparator CMP,
Wherein, the first detection circuit may include first resistor R1, second resistance R2 and third capacitor C3, one end of first resistor R1 with plus
One end of heat coil L2 is connected, the other end of the first resistor R1 reverse phase with one end of second resistance R2 and comparator CMP respectively
Input terminal is connected, and the other end of second resistance R2 is grounded GND, and third capacitor C3 is in parallel with second resistance R2.Second detection circuit
It may include 3rd resistor R3, the 4th resistance R4 and the 4th capacitor C4, one end of 3rd resistor R3 and the other end of heating coil L2
It is connected, the other end of 3rd resistor R3 is connected with the normal phase input end of one end of the 4th resistance R4 and comparator CMP respectively, and the 4th
The other end of resistance R4 is grounded GND, and the 4th capacitor C4 is in parallel with the 4th resistance R4.The output end and control module of comparator CMP
Frequency detecting end be connected.
During electromagnetic heating system work, resonance circuit generates oscillation, the comparison in synchronization signal detection circuit
Device CMP generates energizing signal according to VA and VB, wherein VA is the electricity that the voltage of the one end heating coil L2 is obtained after electric resistance partial pressure
Pressure value, VB are the voltage value that the voltage of the heating coil L2 other end is obtained after electric resistance partial pressure.Control module is according to comparator CMP
Energizing signal obtain the working frequency of electromagnetic heating system, and it is judged.If working frequency is less than or equal to pre-
If frequency, then human ear will experience electromagnetic noise, suitably turn first object current value down at this time, such as by first object current value
The first pre-set current value (e.g., 5 AD values) is turned down to obtain the second target current value, then according to the work of power switch tube electricity
The width of PPG control signal is adjusted in current differential between flow valuve and the second target current value, and according to adjusted
PPG control signal controls power switch tube, to improve electromagnetic heating by the output for suitably reducing heating power
The working frequency of system eliminates electromagnetic noise, prevents from living to user and health impacts.
Therefore, the method for heating and controlling of electromagnetic heating system according to an embodiment of the present invention, according to input voltage value pair
During heating power is adjusted, if the working frequency of electromagnetic heating system is less than or equal to predeterminated frequency, by suitable
When the output for reducing heating power prevents from making user to improve the working frequency of electromagnetic heating system to eliminate electromagnetic noise
At influence.
Further, according to one embodiment of present invention, the method for heating and controlling of above-mentioned electromagnetic heating system may be used also
Include: the temperature value of the temperature value and electromagnetic heating system that obtain power switch tube, and judges that the temperature value of power switch tube is
It is no to be greater than the first preset temperature value and judge whether the temperature value of electromagnetic heating system is greater than the second preset temperature value；If power
The temperature value of switching tube is greater than the first preset temperature value or the temperature value of electromagnetic heating system is greater than the second preset temperature value, then
First object current value is turned down second pre-set current value to obtain third target current value；According to working current value and third mesh
The duty ratio of the power control signal of power switch tube is adjusted in current differential between mark current value.Wherein, first is pre-
If temperature value, the second preset temperature value and the second pre-set current value can be demarcated according to the actual situation, for example, the first default temperature
Angle value can be 85 DEG C, and the second preset temperature value can be 220 DEG C, and the second pre-set current value can be 10 AD values.
Specifically, during target current value is adjusted according to input voltage value, when target current value is adjusted
Gao Shi, corresponding output power will be raised, and when output power is raised, may influence the lag conducting of power switch tube, from
And cause problem of temperature rise, and when the working current value of power switch tube is larger, the reliability of power switch tube may be influenced.
For this purpose, in an embodiment of the present invention, during heating power is adjusted according to input voltage value, also passing through temperature
The temperature for the power switch tube that sensor obtains and the temperature of electromagnetic heating system are adjusted the second target current value, with
The safe and reliable operation of guarantee system.Wherein, power switch can be obtained by the way that the temperature sensor at power switch tube is arranged in
The temperature value of pipe obtains electromagnetism by the temperature sensor being arranged on electromagnetic heating system corresponding product (such as top for electromagnetic oven)
The temperature value of heating system.
After the temperature value of the temperature value and electromagnetic heating system that get power switch tube, it is judged.If
The temperature value of power switch tube is greater than the first preset temperature value or the temperature value of electromagnetic heating system is greater than the second preset temperature
Value, then temperature rise is higher, and first object current value is adjusted at this time, such as turns first object current value down second predetermined current
It is worth (e.g., 10 AD values) to obtain third target current value, then according to the working current value of power switch tube and third target
The width of PPG control signal is adjusted in current differential between current value, and controls signal to function according to PPG adjusted
Rate switching tube is controlled, to avoid power switch tube lag conducting bring by the output for suitably reducing heating power
Problem of temperature rise, and then can guarantee the safe and reliable operation of system.
Therefore, the method for heating and controlling of electromagnetic heating system according to an embodiment of the present invention, according to input voltage value pair
During heating power is adjusted, if the temperature value of power switch tube is greater than the first preset temperature value or electromagnetic heating
The temperature value of system is greater than the second preset temperature value, then avoids power switch tube stagnant by suitably reducing the output of heating power
Bring problem of temperature rise is connected afterwards, and then can guarantee the safe and reliable operation of system.
It should be noted that in an embodiment of the present invention, heating power is adjusted according to input voltage value
It in the process, can also be simultaneously according to the temperature value of the working frequency of electromagnetic heating system and power switch tube, magnetic heating system
Temperature value is adjusted first object current value.
For example, Fig. 3 is the stream of the method for heating and controlling of the electromagnetic heating system of a specific example according to the present invention
Cheng Tu, as shown in figure 3, the method for heating and controlling of the electromagnetic heating system can comprise the following steps that
S101 obtains the input voltage value of electromagnetic heating system and the working current value of power switch tube.
S102, judges whether input voltage value is less than 160V.If so, executing step S103.
S103 tunes up the target current value of power switch tube according to input voltage value.
S104 obtains the working frequency of electromagnetic heating system.
S105, judges whether working frequency is less than or equal to 20kHz.If so, executing step S107；If not, executing step
Rapid S106.
S106, target current value turn 5 AD values down.
S107 obtains the temperature value of power switch tube and the temperature value of electromagnetic heating system.
S108, judges whether the temperature value of power switch tube is greater than 85 DEG C.If so, executing step S110；If not, holding
Row step S109.
S109, judges whether the temperature value of electromagnetic heating system is greater than 220 DEG C.If so, executing step S110；If
It is no, execute step S111.
Target current value is reduced 10 AD values by S110 again.
S111 adjusts the width of PPG control signal according to the current differential between working current value and target current value in time
Degree.
It should be noted that in this embodiment it is that first according to input voltage value to the target current value of power switch tube
It is adjusted, to guarantee that system can operate normally, then further according to the working frequency of electromagnetic heating system to target current value
Further adjusting is done, to prevent target current value is excessively high from system being caused noise problem occur, still further, opening also according to power
The temperature value of the temperature value and electromagnetic heating system that close pipe does further adjusting to the target current value of power switch tube, to prevent
Target current is excessively high to cause temperature rise excessive, and then influences security of system and integrity problem.
And in other embodiments of the invention, it can also be in the target current according to input voltage value to power switch tube
After value is adjusted, first according to the temperature value of the temperature value of power switch tube and electromagnetic heating system to the target of power switch tube
Current value is adjusted, and target current value is adjusted further according to the working frequency of electromagnetic heating system, specific adjusting sequence
Here with no restrictions.
In conclusion the method for heating and controlling of electromagnetic heating system according to an embodiment of the present invention, acquisition electromagnetism first adds
The input voltage value of hot systems and the working current value of power switch tube, then judge whether input voltage value is less than predeterminated voltage
Value, and when input voltage value is less than preset voltage value, it is carried out according to target current value of the input voltage value to power switch tube
It updates to obtain first object current value, and according to the current differential between working current value and first object current value to power
The duty ratio of the power control signal of switching tube is adjusted.This method can be when low-voltage heats, according to input voltage value
It adjusts heating power, realizes the normal heating of system under low-voltage.
In addition, the embodiment of the present invention also proposed a kind of storage medium, it is used to store application program, application program is used
In the method for heating and controlling for executing above-mentioned electromagnetic heating system.
The storage medium of the embodiment of the present invention can by executing the method for heating and controlling of above-mentioned electromagnetic heating system
In low-voltage heating, heating power is adjusted according to input voltage value, realizes the normal heating of system under low-voltage.
Fig. 4 is the block diagram of the heating control apparatus of electromagnetic heating system according to an embodiment of the present invention.Such as Fig. 4 institute
Show, electromagnetic heating system may include heating coil L2, resonant capacitance C2 and power switch tube Q (e.g., IGBT), electromagnetic heating system
Heating control apparatus can include: voltage obtains module 10, electric current obtains module 20 and control module 30.
Wherein, voltage obtains the input voltage value that module 10 is used to obtain electromagnetic heating system, and electric current obtains module 20 and uses
In the working current value for obtaining power switch tube.Control module 30 obtains module 10 with voltage respectively, electric current obtains 20 phase of module
Even, control module 30 is less than predeterminated voltage for judging whether input voltage value is less than preset voltage value, and in input voltage value
It is updated according to target current value of the input voltage value to power switch tube when value to obtain first object current value, and according to
Current differential between working current value and first object current value to the duty ratio of the power control signal of power switch tube into
Row is adjusted.
According to one embodiment of present invention, control module 30 target current value of power switch tube is turned up to obtain the
One target current value, and first object current value is less than default maximum allowed current value.
Further, according to one embodiment of present invention, as shown in figure 4, the heating control of above-mentioned electromagnetic heating system
Device processed may also include frequency acquisition module 40.Wherein, frequency acquisition module 40 is used to obtain the work frequency of electromagnetic heating system
Rate.Control module 30 is also used to judge whether working frequency is greater than predeterminated frequency, and is less than or equal to predeterminated frequency in working frequency
When, turn first object current value down first pre-set current value to obtain the second target current value, and according to working current value with
The duty ratio of the power control signal of power switch tube is adjusted in current differential between second target current value.
According to one embodiment of present invention, as shown in figure 4, frequency acquisition module 40 may include synchronization signal detection electricity
Road.The input terminal of synchronization signal detection circuit is corresponding with the both ends of resonant capacitance C2 to be connected, the output of synchronization signal detection circuit
End is connected with control module 30, and frequency acquisition module 40 obtains the work frequency of electromagnetic heating system by synchronization signal detection circuit
Rate.
Further, according to one embodiment of present invention, as shown in figure 4, the heating control of above-mentioned electromagnetic heating system
Device processed may also include the first temperature acquisition module 50 and second temperature obtains module 60.Wherein, the first temperature acquisition module 50
For obtaining the temperature value of power switch tube, second temperature obtains the temperature value that module 60 is used to obtain electromagnetic heating system.Control
Molding block 30 is also used to judge whether the temperature value of power switch tube is greater than the first preset temperature value and judges electromagnetic heating system
Temperature value whether be greater than the second preset temperature value, wherein if the temperature value of power switch tube be greater than the first preset temperature value
Or the temperature value of electromagnetic heating system is greater than the second preset temperature value, control module 30 then turns first object current value down the
Two pre-set current values are to obtain third target current value, and according to the current difference between working current value and third target current value
The duty ratio of the power control signal of power switch tube is adjusted in value.
It should be noted that undisclosed details in the heating control apparatus of the electromagnetic heating system of the embodiment of the present invention,
Details disclosed in the method for heating and controlling of the electromagnetic heating system of the embodiment of the present invention is please referred to, specifically here no longer in detail
It states.
The heating control apparatus of electromagnetic heating system according to an embodiment of the present invention obtains module by voltage and obtains electromagnetism
The input voltage value of heating system, and the working current value that module obtains power switch tube is obtained by electric current, then pass through control
Molding block judges whether input voltage value is less than preset voltage value, and when input voltage value is less than preset voltage value according to input
Voltage value is updated the target current value of power switch tube to obtain first object current value, and according to working current value with
The duty ratio of the power control signal of power switch tube is adjusted in current differential between first object current value.The device
Heating power can be adjusted according to input voltage value, realizes the normal heating of system under low-voltage when low-voltage is heated.
In addition, the embodiment of the present invention also proposed a kind of electromagnetic heating system comprising above-mentioned heating control apparatus.
The electromagnetic heating system of the embodiment of the present invention, by above-mentioned heating control apparatus, can when low-voltage heats,
Heating power is adjusted according to input voltage value, realizes the normal heating of system under low-voltage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In addition, in the description of the present invention, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ",
"upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " clockwise ", " inverse time
The orientation or positional relationship of the instructions such as needle ", " axial direction ", " radial direction ", " circumferential direction " is to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of method for heating and controlling of electromagnetic heating system, which is characterized in that the electromagnetic heating system include heating coil,
Resonant capacitance and power switch tube, the method for heating and controlling the following steps are included:
Obtain the input voltage value of the electromagnetic heating system and the working current value of the power switch tube；
Judge whether the input voltage value is less than preset voltage value；
If the input voltage value is less than the preset voltage value, according to the input voltage value to the power switch tube
Target current value be updated to obtain first object current value；And
According to the current differential between the working current value and the first object current value to the function of the power switch tube
The duty ratio of rate control signal is adjusted.
2. the method for heating and controlling of electromagnetic heating system as described in claim 1, which is characterized in that by the power switch tube
Target current value be turned up to obtain the first object current value, and the first object current value is less than and default maximum permits
Perhaps current value.
3. the method for heating and controlling of electromagnetic heating system as claimed in claim 1 or 2, which is characterized in that further include:
The working frequency of the electromagnetic heating system is obtained, and judges whether the working frequency is greater than predeterminated frequency；
If the working frequency is less than or equal to the predeterminated frequency, the first object current value is turned down first default electricity
Flow valuve is to obtain the second target current value, and according to the current difference between the working current value and second target current value
The duty ratio of the power control signal of the power switch tube is adjusted in value.
4. the method for heating and controlling of electromagnetic heating system as claimed in claim 1 or 2, which is characterized in that further include:
The temperature value of the power switch tube and the temperature value of the electromagnetic heating system are obtained, and judges the power switch tube
Temperature value whether be greater than the first preset temperature value and judge the temperature value of the electromagnetic heating system whether be greater than second preset
Temperature value；
If the temperature value of the power switch tube is greater than the temperature of first preset temperature value or the electromagnetic heating system
Angle value is greater than second preset temperature value, then turns the first object current value down second pre-set current value to obtain third
Target current value；
According to the current differential between the working current value and the third target current value to the function of the power switch tube
The duty ratio of rate control signal is adjusted.
5. a kind of storage medium, which is characterized in that for storing application program, the application program requires 1 for perform claim
To the method for heating and controlling of electromagnetic heating system described in any one of 4.
6. a kind of heating control apparatus of electromagnetic heating system, which is characterized in that the electromagnetic heating system include heating coil,
Resonant capacitance and power switch tube, the heating control apparatus include:
Voltage obtains module, for obtaining the input voltage value of the electromagnetic heating system；
Electric current obtains module, for obtaining the working current value of the power switch tube；
Control module, the control module obtains module with the voltage respectively, the electric current obtains module and is connected, the control
Module is less than the default electricity for judging whether the input voltage value is less than preset voltage value, and in the input voltage value
It is updated when pressure value according to target current value of the input voltage value to the power switch tube to obtain first object electricity
Flow valuve, and according to the current differential between the working current value and the first object current value to the power switch tube
The duty ratio of power control signal is adjusted.
7. the heating control apparatus of electromagnetic heating system as claimed in claim 6, which is characterized in that the control module is by institute
The target current value for stating power switch tube is turned up to obtain the first object current value, and the first object current value is small
In default maximum allowed current value.
8. the heating control apparatus of electromagnetic heating system as claimed in claims 6 or 7, which is characterized in that further include:
Frequency acquisition module, for obtaining the working frequency of the electromagnetic heating system；
The control module, is also used to judge whether the working frequency is greater than predeterminated frequency, and is less than in the working frequency
Turn the first object current value down first pre-set current value when equal to the predeterminated frequency to obtain the second target current value,
And according to the current differential between the working current value and second target current value to the power of the power switch tube
The duty ratio of control signal is adjusted.
9. the heating control apparatus of electromagnetic heating system as claimed in claims 6 or 7, which is characterized in that the frequency acquisition
Module includes synchronization signal detection circuit, and the input terminal of the synchronization signal detection circuit is corresponding with the both ends of the resonant capacitance
It is connected, the output end of the synchronization signal detection circuit is connected with the control module, and the frequency acquisition module passes through described
Synchronization signal detection circuit obtains the working frequency of the electromagnetic heating system.
10. the heating control apparatus of electromagnetic heating system as claimed in claim 9, which is characterized in that further include:
First temperature acquisition module, for obtaining the temperature value of the power switch tube；
Second temperature obtains module, for obtaining the temperature value of the electromagnetic heating system；
The control module, is also used to judge whether the temperature value of the power switch tube is greater than the first preset temperature value and judgement
Whether the temperature value of the electromagnetic heating system is greater than the second preset temperature value, wherein if the temperature of the power switch tube
Value is greater than first preset temperature value or the temperature value of the electromagnetic heating system is greater than second preset temperature value, institute
It states control module and then turns the first object current value down second pre-set current value to obtain third target current value, and according to
Current differential between the working current value and the third target current value believes the power control of the power switch tube
Number duty ratio be adjusted.
11. a kind of electromagnetic heating system, which is characterized in that including the computer heating control dress as described in any one of claim 6-10
It sets.
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| CN201711227476.9A CN109842968B (en) | 2017-11-29 | 2017-11-29 | Electromagnetic heating system and heating control method and device thereof |
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| CN201711227476.9A CN109842968B (en) | 2017-11-29 | 2017-11-29 | Electromagnetic heating system and heating control method and device thereof |
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| CN110996420A (en) * | 2019-11-14 | 2020-04-10 | 杭州九阳小家电有限公司 | Method for calibrating power of electromagnetic heating equipment and electromagnetic heating equipment |
| CN112714520A (en) * | 2019-10-25 | 2021-04-27 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating appliance and control method and device thereof |
| CN114145508A (en) * | 2021-12-24 | 2022-03-08 | 湖南省拓联精密科技有限公司 | Temperature control method and device for electronic cigarette, electronic cigarette and medium |
| CN114698172A (en) * | 2020-12-29 | 2022-07-01 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating equipment and power control method and power control device thereof |
| CN114698167A (en) * | 2020-12-29 | 2022-07-01 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating equipment and power control method and power control device thereof |
| CN112449452B (en) * | 2019-08-30 | 2023-05-02 | 浙江绍兴苏泊尔生活电器有限公司 | Method for reducing noise of electromagnetic heating circuit, electromagnetic heating circuit and apparatus |
| CN117676943A (en) * | 2024-01-31 | 2024-03-08 | 深圳市盛迪瓦特电气有限公司 | Induction heating power supply device, control method thereof, control device and storage medium |
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| CN114145508A (en) * | 2021-12-24 | 2022-03-08 | 湖南省拓联精密科技有限公司 | Temperature control method and device for electronic cigarette, electronic cigarette and medium |
| CN114145508B (en) * | 2021-12-24 | 2024-01-16 | 湖南省英洛康科技有限公司 | Temperature control method and device of electronic cigarette, electronic cigarette and medium |
| CN117676943A (en) * | 2024-01-31 | 2024-03-08 | 深圳市盛迪瓦特电气有限公司 | Induction heating power supply device, control method thereof, control device and storage medium |
| CN117676943B (en) * | 2024-01-31 | 2024-04-09 | 深圳市盛迪瓦特电气有限公司 | Induction heating power supply device, control method thereof, control device and storage medium |
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