CN110636658A - An electromagnetic induction heating module and heating equipment - Google Patents

Abstract

The application provides an electromagnetic induction heating module and heating equipment. The electromagnetic induction heating module includes an electromagnetic induction coil and a heating control circuit. The electromagnetic induction coil includes three sections of electromagnetic induction lines located on the same coil. The magnetic induction line segments are sequentially arranged along the direction of the same coil; the heating control circuit includes: three sets of half-bridge drive switches, which are respectively connected to the three electromagnetic induction line segments in one-to-one correspondence, and connected to the power supply terminal for driving the The work of the electromagnetic induction line segment; the control module is electrically connected to the control terminal of the half-bridge drive switch, and is used to individually drive each of the half-bridge drive switches to switch the switch state; and the resonant capacitor is connected to each of the electric The magnetic induction line segments are connected to create resonance. The above solution not only has a simple structure and low manufacturing cost, but also can realize separate or coordinated heating control for different parts within the range of the same electromagnetic induction coil, improving the flexibility and heating uniformity of the equipment in the heating process.

Description

An electromagnetic induction heating module and heating equipment

technical field

The present application relates to the field of thermal processing, in particular to an electromagnetic induction heating module and heating equipment.

Background technique

The heating scheme based on electromagnetic induction is widely used in various thermal processing fields, and has the characteristics of safety and high heating efficiency.

Nowadays, the heating equipment adopting the electromagnetic induction heating scheme usually heats the heating appliance by placing an electromagnetic induction coil under the appliance to be heated by the principle of electromagnetic induction. However, only one electromagnetic induction coil can only be used to heat the same local area, and it is difficult to control the heating effect of different parts by uniform heating of the heated whole. The control method is relatively inflexible, and the heating effect of different parts is different during the heating process. affect the overall heating effect.

In other implementations using multiple electromagnetic induction coils, heating control can be performed by configuring multiple electromagnetic induction coils independently placed in different parts, but due to the design limitations of its coil structure and control circuit, its structure is relatively It is complex and occupies a large space, which affects its application range.

Contents of the invention

The present application provides an electromagnetic induction heating module and heating equipment, which can improve the flexibility and heating uniformity of the equipment in the process of controlling the heating.

The embodiment of the present application discloses an electromagnetic induction heating module, including an electromagnetic induction coil and a heating control circuit;

The electromagnetic induction coil includes three electromagnetic induction line segments located on the same coil, and the electromagnetic induction line segments are sequentially arranged along the direction of the same coil;

The heating control circuit includes:

Three sets of half-bridge drive switches are respectively connected to the three electromagnetic induction line segments in one-to-one correspondence, and are connected to the power supply terminal for driving the work of the electromagnetic induction line segment;

a control module, electrically connected to the control terminal of the half-bridge drive switch, and used to individually drive each of the half-bridge drive switches to switch the switch state; and

The resonant capacitor is connected with each electromagnetic induction line segment to generate resonance.

In one embodiment, the electromagnetic induction coil includes three segments of the electromagnetic induction line;

Wherein, a common end is formed between the three electromagnetic induction line segments, and the common end is located at the junction of two adjacent electromagnetic induction line segments.

In one embodiment, the power supply terminal includes a positive power supply terminal and a negative power supply terminal;

The resonant capacitor is connected between the common terminal and the negative power supply terminal, and/or is connected between the common terminal and the positive power supply terminal.

In an embodiment, the electromagnetic induction line segment includes a first electromagnetic induction line segment, a second electromagnetic induction line segment, and a third electromagnetic induction line segment connected in sequence, and the half-bridge drive switch includes a first half-bridge drive switch, a second half-bridge drive switch, and a second half-bridge drive switch. A bridge drive switch and a third half-bridge drive switch, the control module includes a first drive terminal, a second drive terminal and a third drive terminal that can be driven independently;

The first drive end of the control module is electrically connected to the control end of the first half-bridge drive switch, the second drive end of the control module is electrically connected to the control end of the second half-bridge drive switch, and the control module The third drive end of the third half-bridge drive switch is electrically connected to the control end;

The drive end of the first half-bridge drive switch is connected to one end of the first electromagnetic induction line segment, the second half-bridge drive switch is connected to one end of the second electromagnetic induction line segment, and the third half-bridge drive switch is connected to one end of the second electromagnetic induction line segment. The driving end of the switch is connected to one end of the third electromagnetic induction line segment;

The other end of the first electromagnetic induction line segment is connected to the other end of the second electromagnetic induction line segment and the other end of the third electromagnetic induction line segment through the same common end;

The common terminal is connected to the negative power supply terminal through the resonant capacitor, and/or is connected to the positive power supply terminal.

In one embodiment, a first terminal extends between the first electromagnetic induction line segment and the driving end of the first half-bridge driving switch;

A second terminal extends from the common end of the first electromagnetic induction line segment and the second electromagnetic induction line segment;

A third terminal extends between the second electromagnetic induction line segment and the driving end of the second half-bridge driving switch;

A fourth terminal extends between the third electromagnetic induction line segment and the driving end of the third half-bridge driving switch;

A fifth terminal extends between the third electromagnetic induction line segment and the common end of the first electromagnetic induction line segment and the second electromagnetic induction line segment.

In one embodiment, the winding directions of the first electromagnetic induction line segment, the second electromagnetic induction line segment and the third electromagnetic induction line segment are the same;

Wherein, the first terminal is located near the center of the electromagnetic induction coil, the third terminal is adjacent to the fourth terminal, and the second electromagnetic induction line segment is connected to the third electromagnetic induction line segment If not connected, the third electromagnetic induction line segment is connected to the common end through the fifth terminal.

In an embodiment, the half-bridge driving switch includes an IGBT, a MOS transistor, a bipolar transistor, a thyristor or a thyristor.

In one embodiment, the inductance value of each electromagnetic induction line segment ranges from 20 μH to 200 μH.

In an embodiment, the capacitance value of the resonant capacitor ranges from 0.2 μF to 2 μF.

The present application also discloses a heating device, the heating device includes an electromagnetic induction heating module, and the electromagnetic induction heating module is the electromagnetic induction heating module described in any one of the above items.

It can be seen from the above that the electromagnetic induction heating module and heating equipment in the embodiment of the present application have three electromagnetic induction line segments located in the same coil, and the control module is used to control the half-bridge driving switch to work on different electromagnetic induction line segments. The state is controlled separately to achieve flexible control of the heating process of the equipment. The above solution not only has a simple structure and low manufacturing cost, but also can realize separate or coordinated heating control for different parts within the range of the same electromagnetic induction coil, improving the flexibility and heating uniformity of the equipment in the heating process.

Description of drawings

FIG. 1 is a schematic structural diagram of an electromagnetic induction heating module heating module provided in an embodiment of the present application.

FIG. 2 is a schematic structural diagram of the electromagnetic induction coil provided by the embodiment of the present application.

Fig. 3 is a schematic structural diagram of a heating control circuit provided by an embodiment of the present application.

Fig. 4 is another structural schematic diagram of the heating control circuit provided by the embodiment of the present application.

Fig. 5 is another structural schematic diagram of the heating control circuit provided by the embodiment of the present application.

FIG. 6 is a schematic diagram of an application scenario of the electromagnetic induction heating module provided by the embodiment of the present application.

Fig. 7 is a schematic structural diagram of a heating device provided in an embodiment of the present application.

Detailed ways

The preferred embodiments of the present application will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, so as to define the protection scope of the present application more clearly.

Please refer to FIG. 1 , which shows the structure of the electromagnetic induction heating module provided by the embodiment of the present application.

As shown in FIG. 1 , the electromagnetic induction heating module includes an electromagnetic induction coil 1 and a heating control circuit 2 , and the heating control circuit 2 includes three sets of half-bridge drive switches, a control module 22 and a resonant capacitor 23 .

The electromagnetic induction coil 1 includes three electromagnetic induction line segments located on the same coil, and the electromagnetic induction line segments are sequentially arranged along the direction of the same coil.

Specifically, the three electromagnetic induction line segments are respectively located on the same coil and arranged in sequence along the direction of the coil. Among them, a common terminal O is formed between the electromagnetic induction line segments, and the common terminal O is located at the junction of two adjacent electromagnetic induction line segments, and one end of the other electromagnetic induction line segment is connected to the common terminal O through a terminal, and the other One end is adjacent to but not connected to one of the two electromagnetic induction line segments, so that the three electromagnetic induction line segments are connected through the common terminal O and located within the same coil space, which solves the complex structure and cost caused by multiple coils. higher question.

In one embodiment, the electromagnetic induction line segment includes a first electromagnetic induction line segment AO, a second electromagnetic induction line segment BO, and a third electromagnetic induction line segment CD, and the half-bridge drive switch includes a first half-bridge drive switch 21a, a second half-bridge drive switch The drive switch 21b and the third half-bridge drive switch 21c. A first terminal extends between the first electromagnetic induction line segment and the driving end of the first half-bridge drive switch 21a; a second terminal extends from the common end O of the first electromagnetic induction line segment AO and the second electromagnetic induction line segment BO; A third terminal extends between the second electromagnetic induction line segment BO and the driving end of the second half-bridge driving switch 21b; a fourth terminal extends between the third electromagnetic induction line segment CD and the driving end of the third half-bridge driving switch 21c ; A fifth terminal extends between the third electromagnetic induction line segment CD and the common end O of the first electromagnetic induction line segment AO and the second electromagnetic induction line segment BO.

Specifically, the winding directions of the first electromagnetic induction line segment AO, the second electromagnetic induction line segment BO, and the third electromagnetic induction line segment CD are the same; wherein, the first terminal is located near the center of the electromagnetic induction coil 1, and the third terminal is connected to the third electromagnetic induction coil. The four terminals are adjacent, and the second electromagnetic induction line segment BO is not connected to the third electromagnetic induction line segment CD, and the third electromagnetic induction line segment CD is connected to the common terminal OO through the fifth terminal. By setting the coil as shown in Figure 1, the mutual interference between the line segments is reduced, and the working phases of the first electromagnetic induction line segment AO, the second electromagnetic induction line segment BO and the third electromagnetic induction line segment CD in the same coil are ensured.

Please refer to FIG. 2 , which shows another structure of the electromagnetic induction coil 1 provided by the embodiment of the present application. In another embodiment, the electromagnetic induction coil 1 includes a first electromagnetic induction line segment AO, a second electromagnetic induction line segment BO and a third electromagnetic induction line segment CD, the first electromagnetic induction line segment AO, the second electromagnetic induction line segment BO and the third electromagnetic induction line segment The three electromagnetic induction line segments CD can be wound around a strip-shaped structure, and connected at the common end O of the first electromagnetic induction line segment AO and the second electromagnetic induction line segment BO, wherein the second electromagnetic induction line segment BO is connected to the third electric induction line segment The magnetic induction line segments CD are not connected.

It can be understood that, in addition to the form shown in Figure 1-2, the electromagnetic induction coil 1 can also adopt other commonly used coil structures such as concave coils, which will not be described in detail here.

The inductance value range of each electromagnetic induction line segment is 20 μH-200 μH to ensure the working effect of the electromagnetic induction line segment. It can be understood that the specific parameters of the electromagnetic induction line segment can be selected according to actual conditions, which is not limited in the present application.

The half-bridge drive switch is connected with the three electromagnetic induction line segments in one-to-one correspondence, and connected with the power supply end, and is used to drive the electromagnetic induction line segment to work. Among them, a group of half-bridge driving switches can be connected with a section of electromagnetic induction line, and independently control the working state of this section of electromagnetic induction line. Therefore, the three sections of electromagnetic induction line are respectively controlled by three sets of half-bridge driving switches.

In an embodiment, the half-bridge driving switch may include an IGBT, a MOS transistor, a bipolar transistor, a thyristor or a thyristor, as a controllable switch of the heating control circuit 2 . Specifically, the half-bridge driving switch may include two diodes to form a half-bridge circuit.

The control module 22 is electrically connected to the control terminal of the half-bridge driving switches, and is used to individually drive each half-bridge driving switch to switch the switching state.

Wherein, the control module 22 can include an MCU unit with at least three PWM output functions, and the MCU unit can drive the half-bridge drive switch to switch the working state by controlling the characteristics of the PWM, and then control the work of the electromagnetic induction line segment. It can be understood that the heating control mode of the MCU can be designed according to the actual situation, and the existing heating control mode can also be adopted.

In an embodiment, the control module 22 can receive control from the user by setting a control button or a touch screen, and then switch the control mode of the electromagnetic induction line segment. Both the control buttons and the touch screen can refer to existing heating equipment, and the present application will not repeat them here.

The resonant capacitor 23 is connected to each electromagnetic induction line segment to generate resonance. Wherein, the capacitance value range of the resonant capacitor 23 is 0.2 μF-2 μF, and the specific value of the resonant capacitor 23 can be matched according to the parameters of the electromagnetic induction line segment, which is not limited in this application.

In one embodiment, the power terminal includes a positive power terminal and a negative power terminal. The resonant capacitor 23 is connected between the common terminal O of the three electromagnetic induction line segments and the negative power supply terminal, or the resonant capacitor 23 is connected between the common terminal O of the two electromagnetic induction line segments and the positive power supply terminal; in another embodiment Among them, the resonant capacitor 23 is connected between the common terminal O of the three electromagnetic induction line segments and the negative power supply terminal, and between the common terminal O of the three electromagnetic induction line segments and the positive power supply terminal. The three electromagnetic induction line segments only need to share one set of resonant capacitors 23 to realize normal operation, the structure is simple, and the manufacturing cost is saved.

Please refer to FIG. 3 , which shows the structure of the electromagnetic induction coil provided by the embodiment of the present application.

Wherein, the electromagnetic induction heating module includes electromagnetic induction coils L1-L3 and a heating control circuit, and the heating control circuit includes three sets of half-bridge driving switches T1-T6, a control module 12 and resonant capacitors C1 and C2.

Specifically, the electromagnetic induction line segment includes the first electromagnetic induction line segment L1, the second electromagnetic induction line segment L2 and the third electromagnetic induction line segment L3 arranged in sequence. The half-bridge driving switch uses IGBT as the driving switch here, including the first half-bridge driving The switches T1-T2, the second half-bridge drive switches T3-T4, the third half-bridge drive switches T4-T5, and six IGBT drives, the control module 12 may include a first drive end, a second drive end, and a second drive end that can be driven independently. Three driving terminals, wherein the first driving terminal includes PWM1 and PWM2, the second driving terminal includes PWM3 and PWM4, and the third driving terminal includes PWM5 and PWM6.

The first driving terminals PWM1 and PWM2 of the control module 12 are electrically connected to the control terminals of the first half-bridge driving switches T1-T2, that is, the IGBT drivers connected to the first half-bridge driving switches T1-T2. The second driving terminals PWM3 and PWM4 of the control module 12 are electrically connected to the control terminals of the second half-bridge driving switches T3-T4, that is, the IGBT drivers connected to the second half-bridge driving switches T3-T4. The third driving terminals PWM5 and PWM6 of the control module 12 are electrically connected to the control terminals of the third half-bridge driving switches T5-T6, that is, the IGBT drivers connected to the third half-bridge driving switches T5-T6.

The driving end A of the first half-bridge driving switch T1-T2 is connected to one end of the first electromagnetic induction line segment L1, and the driving end B of the second half-bridge driving switch T3-T4 is connected to one end of the second electromagnetic induction line segment L2, The driving terminal C of the third half-bridge driving switch T5-T6 is connected to one end of the second electromagnetic induction line segment L3.

The other end of the first electromagnetic induction line segment L1 is connected to the other end of the second electromagnetic induction line segment L2 and the other end of the third electromagnetic induction line segment L3 to form a common terminal O, and connected to the negative power supply terminal V- through the resonant capacitor C1, and through The resonant capacitor C2 is connected to the positive power supply terminal V+.

Please refer to FIG. 4 , which shows another structure of the electromagnetic induction coil provided by the embodiment of the present application.

The difference from Fig. 3 is that the other end of the first electromagnetic induction line segment is connected with the other end of the second electromagnetic induction line segment and the third electromagnetic induction line segment to form a common terminal O, and the common terminal O is only connected to the negative power supply through the resonant capacitor C1 terminal V-connection.

Please refer to FIG. 5 , which shows another structure of the electromagnetic induction coil provided by the embodiment of the present application.

The difference from Fig. 3 and Fig. 4 is that the other end of the first electromagnetic induction line segment is connected with the other end of the second electromagnetic induction line segment and the other end of the third electromagnetic induction line segment to form a common terminal O, and the common terminal O is only passed through the resonant capacitor C2 Connect with the positive power supply terminal V+.

In one implementation, when the first electromagnetic induction line segment L1 needs to work, the control module 12 controls the corresponding IGBT drive through the first drive terminals PWM1 and PWM2, so as to turn on the first half-bridge drive switches T1-T2. At this time, the first electromagnetic induction line segment L1 cooperates with the resonant capacitors C1 and/or C2 to form a resonance, and the first electromagnetic induction line segment L1 forms an electromagnetic induction effect with the coil at the corresponding position of the appliance to be heated to realize heating.

When the second electromagnetic induction line segment L2 needs to work, the control module 12 controls the corresponding IGBT driving through the second driving terminals PWM3 and PWM4, so as to turn on the second half-bridge driving switches T3-T4. At this time, the second electromagnetic induction line segment L2 cooperates with the resonant capacitors C1 and/or C2 to generate resonance, and utilizes the electromagnetic induction effect formed by the second electromagnetic induction line segment L2 and the coil at the corresponding position of the appliance to be heated to realize heating.

When the third electromagnetic induction line segment L3 needs to work, the control module 12 controls the corresponding IGBT driving through the third driving terminals PWM5 and PWM6, so as to turn on the third half-bridge driving switches T5-T6. At this time, the third electromagnetic induction line segment L3 cooperates with the resonant capacitors C1 and/or C2 to generate resonance, and the third electromagnetic induction line segment L3 forms an electromagnetic induction effect with the coil at the corresponding position of the appliance to be heated to realize heating.

Wherein, the first electromagnetic induction line segment L1 , the second electromagnetic induction line segment L2 and the third electromagnetic induction line segment L3 can work simultaneously or separately.

Please refer to FIG. 6 , which shows an application scenario of the electromagnetic induction heating module provided by the embodiment of the present application.

The figure shows a heating area 3 of a heating device, and the heating area 3 includes a first heating area 31 , a second heating area 32 , and a third heating area 33 . When the first electromagnetic induction line section is working, it will have an electromagnetic induction effect with the first heated area 31 and heat it; when the second electromagnetic induction line section is working, it will have an electromagnetic induction effect with the second heated area 32 and heat it. Heating; when the third electromagnetic induction line segment is working, it will generate electromagnetic induction effect with the third heated area 33 and heat it.

At this time, according to the size of the heated area of the heating device, the heating control of the first heated area 31 can be selected, or the first heated area 31, the second heated area 32 or the third heated area 33 can be individually/coordinated heated .

When only the first heating area 31 is used, the heating control of the first heating area 31 can be realized by controlling the induction output power of the first electromagnetic induction line segment.

When the first heating area 31, the second heating area 32 and the third heating area 33 are used at the same time, the induction output of the first electromagnetic induction line segment, the second electromagnetic induction line segment and the third electromagnetic induction line segment can be controlled respectively during the heating process Power, which in turn makes the heating of different heated areas more uniform.

For example, if the heating power is affected by the power during the heating process, the heating power decreases from the center of the electromagnetic induction coil to the periphery. At this time, the power ratio between the first electromagnetic induction line segment, the second electromagnetic induction line segment and the third electromagnetic induction line segment can be adjusted so that the output power of the first electromagnetic induction line segment, the induction output power of the second electromagnetic induction line segment and the third electric The magnetic induction line segments are increased sequentially, or the specific power ratio is adjusted according to actual needs, such as the induction output power of the second electromagnetic induction line segment is increased, and the induction output power of the first electromagnetic induction line segment and the third electromagnetic induction line segment are maintained at the same value. Make the different heating areas more evenly heated.

The induction output power can be controlled by a program according to the actual heating situation so that different electromagnetic induction line segments have different heating powers in different states to improve the heating effect.

The induction output power of the first electromagnetic induction line segment and the second electromagnetic induction line segment can flexibly set their respective ratios according to needs. Specifically, the working mode of each electromagnetic induction line segment can be set according to needs, which is not limited in this application.

It can be seen that through the different positions of the first electromagnetic induction line segment L1, the second electromagnetic induction line segment L2 and the third electromagnetic induction line segment L3 in the electromagnetic induction coil, they can be controlled separately to realize heating of different parts of the appliance to be heated, so that the heating control process more flexible. Moreover, the control circuit structure of the electromagnetic induction heating module is relatively simple, which is beneficial to reduce the manufacturing cost of the device.

In summary, the electromagnetic induction heating module in the embodiment of the present application has an electromagnetic induction coil with three electromagnetic induction line segments located in the same coil, and the control module is used to control the half-bridge drive switch to control the working status of different electromagnetic induction line segments. Separate control to achieve flexible control of the heating process of the equipment. The above solution not only has a simple structure and low manufacturing cost, but also can realize separate or coordinated heating control for different parts within the range of the same electromagnetic induction coil, improving the flexibility and heating uniformity of the equipment in the heating process.

Please refer to FIG. 7 , which shows the structure of the heating device provided by the embodiment of the present application.

The heating device includes an electromagnetic induction heating module 10, and the electromagnetic induction heating module 10 is the electromagnetic induction heating module 10 in any one of the embodiments in Figs. 1-2.

Wherein, the heating device 100 can refer to a DC power supply composed of an AC input module and a rectifier bridge as shown in FIG. . In addition, the electromagnetic induction heating module 10 can also receive control from the user by setting a control button or a touch screen, and then switch the control mode of the electromagnetic induction line segment.

It should be noted that, for the specific implementation of the structure of the heating device other than the electromagnetic induction heating module 10, such as the above-mentioned DC power supply, control buttons, touch screen and their corresponding implementations, etc., you can refer to the solutions disclosed in the art , which is not limited in this application.

It can be seen from the above that the heating device is equipped with the electromagnetic induction heating module as shown in Figure 1-2, so that the heating device can realize the flexible control of the heating process of the device. The above solution not only has a simple structure and low manufacturing cost, but also can realize separate or coordinated heating control for different parts within the range of the same electromagnetic induction coil, improving the flexibility and heating uniformity of the equipment in the heating process.

The implementation of the application has been described in detail above in conjunction with the accompanying drawings, but the application is not limited to the above-mentioned implementation, within the scope of knowledge of those of ordinary skill in the art, various modifications can be made without departing from the purpose of the application. kind of change.

Claims (10)

1. The utility model provides an electromagnetic induction heating module, includes electromagnetic induction coil and heating control circuit, its characterized in that:

the electromagnetic induction coil comprises three electromagnetic induction line sections positioned on the same coil, and the electromagnetic induction line sections are sequentially arranged along the direction of the same coil;

the heating control circuit comprises:

the three groups of half-bridge driving switches are respectively connected with the three electromagnetic induction line sections in a one-to-one correspondence manner, are connected with a power supply end and are used for driving the electromagnetic induction line sections to work;

the control module is electrically connected with the control end of the half-bridge driving switch and is used for independently driving each half-bridge driving switch to switch the switch state; and

and the resonance capacitor is connected with each electromagnetic induction line segment to generate resonance.

2. The electromagnetic induction heating module of claim 1, wherein a common terminal is formed between three sections of the electromagnetic induction line segments, and the common terminal is located at a junction of two adjacent sections of the electromagnetic induction line segments.

3. The electromagnetic induction heating module of claim 2, wherein:

the power supply ends comprise a positive power supply end and a negative power supply end;

the resonant capacitor is connected between the common terminal and a negative power terminal and/or between the common terminal and a positive power terminal.

4. The electromagnetic induction heating module of claim 3, wherein:

the electromagnetic induction line section comprises a first electromagnetic induction line section, a second electromagnetic induction line section and a third electromagnetic induction line section which are sequentially connected, the half-bridge drive switch comprises a first half-bridge drive switch, a second half-bridge drive switch and a third half-bridge drive switch, and the control module comprises a first drive end, a second drive end and a third drive end which can be independently driven;

the first driving end of the control module is electrically connected with the control end of the first half-bridge driving switch, the second driving end of the control module is electrically connected with the control end of the second half-bridge driving switch, and the third driving end of the control module is electrically connected with the control end of the third half-bridge driving switch;

the driving end of the first half-bridge driving switch is connected with one end of the first electromagnetic induction line segment, the second half-bridge driving switch is connected with one end of the second electromagnetic induction line segment, and the driving end of the third half-bridge driving switch is connected with one end of the third electromagnetic induction line segment;

the other end of the first electromagnetic induction line segment is connected with the other end of the second electromagnetic induction line segment and the other end of the third electromagnetic induction line segment through the same common end;

the common terminal is connected with the negative power supply terminal through the resonance capacitor and/or is connected with the positive power supply terminal.

5. The electromagnetic induction heating module of claim 4, wherein a first terminal extends between said first electromagnetic induction line segment and said drive end of said first half-bridge drive switch;

a second wiring terminal extends from the common end of the first electromagnetic induction line segment and the second electromagnetic induction line segment;

a third terminal extends between the second electromagnetic induction line segment and the driving end of the second half-bridge driving switch;

a fourth terminal extends between the third electromagnetic induction line segment and the driving end of the third half-bridge driving switch;

and a fifth wiring terminal extends between the third electromagnetic induction line segment and the common ends of the first electromagnetic induction line segment and the second electromagnetic induction line segment.

6. The electromagnetic induction heating module according to any one of claim 5, wherein the first electromagnetic induction line segment, the second electromagnetic induction line segment and the third electromagnetic induction line segment have the same winding direction;

the first wiring terminal is located near the circle center of the electromagnetic induction coil, the third wiring terminal is adjacent to the fourth wiring terminal, the second electromagnetic induction line segment is not connected with the third electromagnetic induction line segment, and the third electromagnetic induction line segment is connected with the public end through the fifth wiring terminal.

7. The electromagnetic induction heating module of any of claims 1-6, wherein the half-bridge drive switch comprises an IGBT, MOS transistor, bipolar transistor, thyristor, or thyristor.

8. The electromagnetic induction heating module of any one of claims 1-6, wherein the inductance value of each of said electromagnetic induction line segments is in the range of 20 μ H-200 μ H.

9. The electromagnetic induction heating module of any of claims 1-6, wherein the resonant capacitor has a capacitance value in the range of 0.2 μ F-2 μ F.

10. A heating apparatus, characterized in that the heating apparatus comprises an electromagnetic induction heating module according to any one of claims 1-9.