Multi-core temperature control electronic cigarette and method

By using multi-core temperature control technology in electronic cigarettes, the heating power of the heating body is dynamically adjusted, and the lack of temperature control of existing electronic cigarettes is solved, the complete atomization and taste of e-liquid are achieved, and the atomization is extended The service life of the core.

CN119423422APending Publication Date: 2025-02-14SHENZHEN YOUME NETWORK TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411636612.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-02-14

AI Technical Summary

Technical Problem

During the smoking process, existing electronic cigarettes cannot dynamically control the output power according to the temperature of the heating wire, resulting in insufficient temperature, resulting in insufficient atomization of the e-liquid, or excessive temperature damages the composition and taste of the smoke liquid, and the heating temperatures of different atomization cores affect each other. , affects the atomization effect and the life of the heating wire.

Method used

Design a multi-core temperature-controlled electronic cigarette, adopting multiple atomization cores, output modules and detection and adjustment modules, and dynamically adjust the heating power of the output module by comparing the current resistance value of the heating element with the preset target resistance value, and accurately Maintain the temperature of the heating element within the preset range.

Benefits of technology

The precise temperature control of each atomizing core is achieved, avoiding the mutual influence of the temperature between different atomizing cores, ensuring that the e-liquid is completely atomized, with sufficient explosive taste, good layering, and extending the service life of the atomizing core.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119423422A_ABST
    Figure CN119423422A_ABST
Patent Text Reader

Abstract

The invention relates to a multi-core temperature control electronic cigarette and a method, the multi-core temperature control electronic cigarette is provided with a plurality of atomizing cores provided with heating bodies, and an output module and a detection adjusting module electrically connected with the heating bodies, when the multi-core temperature control electronic cigarette is used, a multi-core temperature control method is adopted, the environment temperature of the atomizing cores is set, and the initial resistance values of different heating bodies are detected; different target resistance values of different heating bodies at the preset temperature are set in the detection adjusting module, and the heating power of the output module is adjusted after the obtained current resistance value of the heating body is compared with the target resistance value, so that the resistance value of the heating body is dynamically close to the target resistance value, and the temperature of the heating body is accurately maintained within the preset range. Due to the fact that the temperature of each heating body can be accurately controlled, the temperatures of the multiple atomizing cores are not affected, each atomizing core can enable tobacco tar to be completely atomized, the taste explosive force is sufficient, the layering sense is good, and the service life of the different atomizing cores cannot be affected.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of electronic cigarettes, and in particular to a multi-core temperature-controlled electronic cigarette and a method thereof. Background Art

[0002] An electronic atomizer is an electronic product that imitates cigarettes and can atomize tobacco oil into smoke for users to inhale. Due to the similar taste and convenience of inhalation as cigarettes, electronic atomizers have been rapidly promoted and used.

[0003] The working principle of the electronic cigarette device is to atomize the smoke oil in the atomizer by heating the heating wire to a certain temperature. The existing electronic cigarette output mode is usually a constant voltage and constant power temperature control mode. The voltage or power applied to the heating wire when the heating wire is at room temperature is the same as when the heating wire is at high temperature, and the resistance of the heating wire at room temperature and high temperature will change. During the inhalation process, the voltage and power required for the heating wire to go from room temperature to high temperature for atomization and from the higher temperature of the heating wire that has not been cooled to high temperature for atomization are different. The constant voltage and constant power output mode will not change the output voltage and power according to the actual situation, which will cause insufficient temperature to cause insufficient atomization of the smoke oil, insufficient explosiveness of the smoking taste, or excessive temperature to damage the smoke liquid composition and taste, the smoke has a burnt taste, and even affect the life of the heating wire.

[0004] Especially for multi-core output, if the constant pressure and constant power output method is used, the actual heating temperature of different atomizer cores in the atomization airway will affect each other, the heating temperature of individual atomizer cores will be too high, the atomization effect will be quite different, and the heating life of the atomizer core will be affected due to the excessively high local temperature, and the electronic cigarette with large capacity of e-liquid cannot be fully atomized. In addition, different e-cigarette liquid flavors require different atomization temperatures to reflect a good suction taste and suction layering, and the constant pressure and constant power method cannot achieve the ideal effect.

[0005] Therefore, how to control the output power according to the temperature of the heating wire during the smoking process becomes a technical problem that needs to be solved urgently. Summary of the invention

[0006] Based on this, it is necessary to provide a multi-core temperature-controlled electronic cigarette and method in which different atomization cores are not affected by the heating temperature, the e-liquid is completely atomized, the taste is explosive and the layering is good, in order to solve the above problems.

[0007] A multi-core temperature-controlled electronic cigarette comprises a compatible battery host and an atomizer, and is provided with a plurality of atomizer cores, an output module and a detection and adjustment module, wherein the plurality of atomizer cores are all provided with a heating element; the atomizer core is arranged in the atomizer, the output module is electrically connected to the plurality of heating elements and supplies power to heat the heating elements, the detection and adjustment module is provided with different target resistance values ​​of different heating elements at a preset temperature, and the heating power of the output module is adjusted after comparing the current resistance value of the heating element detected with the target resistance value, so that the resistance value of the heating element is dynamically close to the target resistance value, so that the temperature of the heating element is accurately maintained within a preset range.

[0008] In one embodiment, the detection and adjustment module includes a microprocessor and a detection circuit. The microprocessor is connected to both the output module and the detection circuit. The microprocessor receives a signal from the detection circuit and adjusts the heating power of the output circuit accordingly.

[0009] In one embodiment, the detection circuit includes a resistance detection circuit and a voltage detection circuit, the resistance detection circuit detects the real-time resistance of the heating element, and the voltage detection circuit detects the real-time voltage of the battery.

[0010] In one embodiment, a start-up module connected to the microprocessor is further included. The start-up module is an airflow sensor, an airflow switch or a touch switch. The start-up signal of the start-up module is a switch digital signal or a voltage analog signal.

[0011] A multi-core temperature control method is used to accurately control the temperature of the heating elements of multiple atomizer cores, comprising the following steps:

[0012] S1, set the ambient temperature T1, and start the detection and adjustment module under the ambient temperature T1 to detect the initial resistance R0 of each heating element respectively;

[0013] S2, the detection and regulation module controls the output power of the output module to heat the heating element, and detects the current resistance value R1 of each heating element respectively when the first preset time is reached;

[0014] S3, a preset temperature T2 is set in the detection and adjustment module, and the target resistance R2 of each heating element under the preset temperature T2 is calculated;

[0015] S4. The detection and adjustment module compares the current resistance value R1 of each heating element with the target resistance value R2, and adjusts the power output by the output module according to the comparison result, so that the resistance value of the heating element dynamically approaches the target resistance value R2.

[0016] In one embodiment, the output module includes at least a first output circuit corresponding to the first heating element and a second output circuit corresponding to the second heating element; the R0 includes at least initial resistance values ​​R0_1 and R0_2 obtained according to the first heating element and the second heating element, the R1 includes at least current resistance values ​​R1_1 and R1_2 obtained according to the first heating element and the second heating element, and the R2 includes at least target resistance values ​​R2_1 and R2_2 obtained according to the first heating element and the second heating element; the temperature resistance coefficient of the heating element is K, R2_1=K×(T2-T1) / R0_1+R0_1, R2_2=K×(T2-T1) / R0_2+R0_2.

[0017] In one embodiment, the current resistance R1 of the heating element is compared with the target resistance R2. When R1_1>R2_1, the detection and adjustment module reduces the heating power of the first output circuit, and when R1_1<R2_1, the detection and adjustment module increases the heating power of the first output circuit; when R1_2>R2_2, the detection and adjustment module reduces the heating power of the second output circuit, and when R1_2<R2_2, the detection and adjustment module increases the heating power of the second output circuit.

[0018] In one of the embodiments, the detection and regulation module adjusts the output heating power by adjusting the PWM duty cycle, adjusting the output voltage, or introducing a PID algorithm.

[0019] In one embodiment, the first heating element and the second heating element can be preset with different temperature combinations, the preset temperature of the first heating element is T2, and the preset temperature of the second heating element is T3, so as to output a heating effect with mixed temperatures.

[0020] In one embodiment, the target resistance of the second heating element at the preset temperature T2 is R3. At this time, the target resistances obtained according to the first heating element and the second heating element are R2 and R3 respectively, R2=K×(T2-T1) / R0_1+R0_1, R3=K×(T2-T1) / R0_2+R0_2; when R1_1>R2, the detection and adjustment module reduces the heating power of the first output circuit, and when R1_1<R2, the detection and adjustment module increases the heating power of the first output circuit; when R1_2>R3, the detection and adjustment module reduces the heating power of the second output circuit, and when R1_2<R3, the detection and adjustment module increases the heating power of the second output circuit.

[0021] The above multi-core temperature-controlled electronic cigarette and method include at least the following advantages:

[0022] The multi-core temperature-controlled electronic cigarette is provided with multiple atomizing cores equipped with heating elements, as well as an output module and a detection and adjustment module electrically connected to the heating elements. When in use, the multi-core temperature control method is adopted to set the ambient temperature of the atomizing core, and the initial resistance of different heating elements is detected. Different target resistances of different heating elements at a preset temperature are set in the detection and adjustment module. The heating power of the output module is adjusted after comparing the current resistance of the heating element with the target resistance, so that the resistance of the heating element is dynamically close to the target resistance, and the temperature of the heating element is accurately maintained within the preset range. Because the temperature of each heating element can be accurately controlled, the temperatures of multiple atomizing cores are not affected by each other, and each atomizing core can make the smoke oil completely atomized, the taste is explosive, and the layering is good, and it will not affect the service life of different atomizing cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the multi-core temperature-controlled electronic cigarette of the present invention;

[0024] Figure 2 This is a temperature control logic block diagram of the multi-core temperature control electronic cigarette of the present invention;

[0025] Figure 3 The figure is a flow chart of the multi-core temperature control method of the present invention.

[0026] Description: 10. Battery host; 12. Output module; 14. Detection and adjustment module; 142. Microprocessor; 144. Detection circuit; 1442. Resistance detection circuit; 1444. Voltage detection circuit; 16. Start module; 17. Power supply unit; 20. Atomizer; 22. Atomizer core; 222. Heater. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] See also Figure 1 , is a schematic diagram of the structure of a multi-core temperature-controlled electronic cigarette in one embodiment.

[0031] See also Figure 1 , Figure 2 The multi-core temperature-controlled electronic cigarette includes a compatible battery host 10 and an atomizer 20, which are provided with multiple atomizer cores 22, an output module 12 and a detection and adjustment module 14. The multiple atomizer cores 22 are all provided with a heating element 222; the atomizer core 22 is arranged in the atomizer 20, the output module 12 is electrically connected to the multiple heating elements 222, and supplies power to heat the heating elements 222, and the detection and adjustment module 14 is provided with different target resistance values ​​of different heating elements 222 at a preset temperature. The heating power of the output module 12 is adjusted after comparing the current resistance value of the detected heating element 222 with the target resistance value, so that the resistance value of the heating element 222 is dynamically close to the target resistance value, so that the temperature of the heating element 222 is accurately maintained within a preset range.

[0032] The multi-core temperature-controlled electronic cigarette is provided with a plurality of atomizing cores 22 equipped with heating elements 222, and an output module 12 and a detection and adjustment module 14 electrically connected to the heating elements 222. When in use, a multi-core temperature control method is adopted to set the ambient temperature of the atomizing core 22, and to detect the initial resistance of different heating elements 222. The detection and adjustment module 14 is provided with different target resistances of different heating elements 222 at a preset temperature. The heating power of the output module 12 is adjusted after comparing the current resistance of the heating element 222 with the target resistance, so that the resistance of the heating element 222 is dynamically close to the target resistance, and the temperature of the heating element 222 is accurately maintained within a preset range. Because the temperature of each heating element 222 can be accurately controlled, the temperatures of the multiple atomizing cores 22 are not affected by each other, and each atomizing core 22 can completely atomize the smoke oil, have a strong explosive taste, and have a good sense of layering, and will not affect the service life of different atomizing cores 22.

[0033] In this embodiment, the detection and adjustment module 14 includes a microprocessor 142 and a detection circuit 144. The microprocessor 142 is connected to the output module 12 and the detection circuit 144. The microprocessor 142 receives the signal of the detection circuit 144 and adjusts the heating power of the output circuit accordingly. When using the electronic cigarette, the detection circuit 144 detects the initial resistance and current resistance of each heating element 222, as well as the target resistance of the heating element 222 at a preset temperature calculated according to the temperature resistance coefficient K of the heating element 222. After receiving the detected data, the microprocessor 142 performs a comparative analysis. If the current resistance of the corresponding heating element 222 is greater than the target resistance of the heating element 222, it indicates to reduce the output heating power of the output module 12. If the current resistance of the corresponding heating element 222 is less than the target resistance of the heating element 222, it indicates to increase the output heating power of the output module 12. Of course, multiple different heating elements 222 can be detected and adjusted separately. Even if the temperatures of different heating elements 222 after heating are different, the target resistance value will change accordingly according to the change of ambient temperature, and will not affect each other, thereby affecting the atomization of the e-liquid, the taste and the service life of the atomizer core 22; by adjusting the output heating power, each atomizer core 22 can make the e-liquid atomized completely, the taste explosive enough, and the layered feeling good, and the smoking effect desired by the design can be achieved, and the atomizer core 22 will not be affected by the temperature after atomization between different atomizer cores 22, resulting in the problem of the atomizer core 22 burning, which is beneficial to ensure the service life of the atomizer 20.

[0034] In this embodiment, the detection circuit 144 includes a resistance detection circuit 1442144 and a voltage detection circuit 1444144. The resistance detection circuit 1442144 detects the real-time resistance of the heating element 222 within a preset time, so as to judge the size between the current resistance and the target resistance according to the real-time resistance, thereby accurately adjusting the output heating power and realizing precise temperature control between each heating element 222; the voltage detection circuit 1444144 is used to detect the real-time voltage of the battery. Before the output power heating and during the heating process, the voltage of the battery in the battery host 10 is detected. If the battery voltage is lower than the preset voltage, such as 3.3V, the microprocessor 142 controls the output circuit and stops heating to avoid over-discharge of the battery system, thereby extending the battery life.

[0035] In this embodiment, a starting module 16 connected to the microprocessor 142 is also included. The starting module 16 is an airflow sensor, an airflow switch or a touch switch. The starting signal of the starting module 16 is a switch digital signal or a voltage analog signal.

[0036] Furthermore, it also includes a charging module and a display module. When the microprocessor 142 detects the charging signal of the charging module, it can control the charging module to charge the built-in battery; the display module can be an LED, a digital tube screen, an LED intermittent screen, an OLED screen, a TFT screen, etc. The display module can display charging information, and can also display a warning message through the display module when the battery voltage is lower than a preset voltage to avoid over-discharge of the battery.

[0037] It is understandable that at least two temperature control output circuits are set in the electronic cigarette, because different electronic cigarette liquid flavors match different temperatures to bring out the best taste, and the temperature of the electronic cigarette liquid flavor is matched according to the preset temperature or the temperature of the electronic cigarette liquid flavor is matched according to the preset temperature, and heated and atomized. Each heating element 222 can be heated at the same or different temperatures to meet the same or different smoking tastes or types of e-liquids; at least two temperature control output circuits can work simultaneously, alternately, or selectively select the corresponding atomizer core 22 to work; the output circuit temperature can also be prefabricated or can be adapted and adjusted by the user.

[0038] Of course, the temperature can be preset by factory settings or by key switch conditions.

[0039] The arrangement of at least two heating elements 222 and at least two output circuits can realize mixed heating at multiple temperatures in the electronic cigarette body, and atomize the mixed flavor of the smoke oil to the maximum extent, making the experience fuller and the smoking experience more layered, that is, having an experience of different flavors; the temperature of each output can be controlled, making it healthier to use, and the structure of the atomization core 22 will not be damaged due to excessive local temperature, and the atomization liquid capacity stored in the electronic cigarette can be fully atomized, and the electronic cigarette has a longer battery life under the condition of the same capacity of smoke liquid.

[0040] See also Figure 3 , corresponding to the multi-core temperature-controlled electronic cigarette, also includes a multi-core temperature control method for accurately controlling the temperature of the heating elements 222 of the multiple atomizing cores 22, including the following steps:

[0041] S1, setting the ambient temperature T1, and starting the detection and adjustment module 14 under the ambient temperature T1, respectively detecting the initial resistance R0 of each heating element 222;

[0042] S2, the detection and adjustment module 14 controls the output power of the output module 12 to heat the heating element 222, and detects the current resistance value R1 of each heating element 222 when the first preset time is reached;

[0043] S3, the preset temperature T2 is set in the detection and adjustment module 14, and the target resistance R2 of each heating element 222 under the preset temperature T2 is calculated;

[0044] S4. The detection and adjustment module 14 compares the current resistance R1 of each heating element 222 with the target resistance R2, and adjusts the power output by the output module 12 according to the comparison result, so that the resistance of the heating element 222 dynamically approaches the target resistance R2.

[0045] The setting of the ambient temperature T1 may be that the microprocessor 142 detects the current ambient temperature T1 through a sensor built into the MCU, or detects the ambient temperature T1 by setting a temperature detection module, or the current ambient temperature T1 is preset in the microprocessor 142 .

[0046] In this embodiment, the output module 12 includes at least a first output circuit corresponding to the first heating element 222 and a second output circuit corresponding to the second heating element 222; R0 includes at least initial resistance values ​​R0_1 and R0_2 obtained according to the first heating element 222 and the second heating element 222, R1 includes at least current resistance values ​​R1_1 and R1_2 obtained according to the first heating element 222 and the second heating element 222, and R2 includes at least target resistance values ​​R2_1 and R2_2 obtained according to the first heating element 222 and the second heating element 222; the temperature resistance coefficient of the heating element 222 is K, R2_1=K×(T2-T1) / R0_1+R0_1, R2_2=K×(T2-T1) / R0_2+R0_2.

[0047] Compare the current resistance R1 of the heating element 222 with the target resistance R2. When R1_1>R2_1, the detection and adjustment module 14 reduces the heating power of the first output circuit. When R1_1<R2_1, the detection and adjustment module 14 increases the heating power of the first output circuit. When R1_2>R2_2, the detection and adjustment module 14 reduces the heating power of the second output circuit. When R1_2<R2_2, the detection and adjustment module 14 increases the heating power of the second output circuit.

[0048] The detection and regulation module 14 can adjust the output heating power by adjusting the PWM duty cycle, adjusting the output voltage, or introducing a PID algorithm.

[0049] In this embodiment, when the temperature of the first heating element 222 and the second heating element 222 is preset to T2, the corresponding target resistance values ​​are R2_1 and R2_2; when the preset temperature of the first heating element 222 is T2 and the preset temperature of the second heating element 222 is T3, the corresponding target resistance values ​​are R2 and R3.

[0050] The first heating element 222 and the second heating element 222 can be preset with different temperature combinations. The preset temperature of the first heating element 222 is T2, and the preset temperature of the second heating element 222 is T3, so as to output a heating effect with mixed temperatures.

[0051] The target resistance of the second heating element 222 at the preset temperature T2 is R3. At this time, the target resistances obtained according to the first heating element 222 and the second heating element 222 are R2 and R3 respectively, R2=K×(T2-T1) / R0_1+R0_1, R3=K×(T2-T1) / R0_2+R0_2; when R1_1>R2, the detection and adjustment module 14 reduces the heating power of the first output circuit, and when R1_1<R2, the detection and adjustment module 14 increases the heating power of the first output circuit; when R1_2>R3, the detection and adjustment module 14 reduces the heating power of the second output circuit, and when R1_2<R3, the detection and adjustment module 14 increases the heating power of the second output circuit.

[0052] Among them, the first preset time can be set according to actual needs, such as 10mS, and "every time the first preset time is reached" means that the current resistance value and the target resistance value are detected and calculated every first preset time, and the output heating power is adjusted, and the cycle stops until the start signal.

[0053] Of course, a third heating element 222, a fourth heating element 222 or even more may be provided, all of which may correspond to the above detection, comparison and adjustment methods according to actual needs.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A multi-core temperature-controlled electronic cigarette, comprising a compatible battery host and an atomizer, characterized in that: A plurality of atomizing cores, an output module and a detection and adjustment module are provided, and the plurality of atomizing cores are all provided with a heating element; the atomizing core is provided in the atomizer, the output module is electrically connected to the plurality of heating elements, and supplies power to heat the heating elements, the detection and adjustment module is provided with different target resistance values ​​of different heating elements at a preset temperature, and the heating power of the output module is adjusted after comparing the current resistance value of the heating element detected with the target resistance value, so that the resistance value of the heating element dynamically approaches the target resistance value, and the temperature of the heating element is accurately maintained within a preset range.

2. The multi-core temperature-controlled electronic cigarette according to claim 1, characterized in that: The detection and adjustment module includes a microprocessor and a detection circuit. The microprocessor is connected to both the output module and the detection circuit. The microprocessor receives a signal from the detection circuit and adjusts the heating power of the output circuit accordingly.

3. The multi-core temperature-controlled electronic cigarette according to claim 2, characterized in that: The detection circuit includes a resistance detection circuit and a voltage detection circuit. The resistance detection circuit detects the real-time resistance of the heating element, and the voltage detection circuit detects the real-time voltage of the battery.

4. The multi-core temperature-controlled electronic cigarette according to claim 3, characterized in that: It also includes a starting module connected to the microprocessor, wherein the starting module is an airflow sensor, an airflow switch or a touch switch, and the starting signal of the starting module is a switch digital signal or a voltage analog signal.

5. A multi-core temperature control method for accurately controlling the temperature of the heating elements of multiple atomizing cores, characterized in that: The following steps are involved: S1, set the ambient temperature T1, and start the detection and adjustment module under the ambient temperature T1 to detect the initial resistance R0 of each heating element respectively; S2, the detection and regulation module controls the output power of the output module to heat the heating element, and detects the current resistance value R1 of each heating element respectively when the first preset time is reached; S3, a preset temperature T2 is set in the detection and adjustment module, and the target resistance R2 of each heating element under the preset temperature T2 is calculated; S4. The detection and adjustment module compares the current resistance value R1 of each heating element with the target resistance value R2, and adjusts the power output by the output module according to the comparison result, so that the resistance value of the heating element dynamically approaches the target resistance value R2.

6. The multi-core temperature control method according to claim 5, characterized in that: The output module at least includes a first output circuit corresponding to the first heating element and a second output circuit corresponding to the second heating element; the R0 at least includes initial resistance values ​​R0_1 and R0_2 obtained according to the first heating element and the second heating element, the R1 at least includes current resistance values ​​R1_1 and R1_2 obtained according to the first heating element and the second heating element, and the R2 at least includes target resistance values ​​R2_1 and R2_2 obtained according to the first heating element and the second heating element; the temperature resistance coefficient of the heating element is K, R2_1=K×(T2-T1) / R0_1+R0_1, R2_2=K×(T2-T1) / R0_2+R0_2.

7. The multi-core temperature control method according to claim 6, characterized in that: Compare the current resistance R1 of the heating element with the target resistance R2. When R1_1>R2_1, the detection and adjustment module reduces the heating power of the first output circuit. When R1_1<R2_1, the detection and adjustment module increases the heating power of the first output circuit. When R1_2>R2_2, the detection and adjustment module reduces the heating power of the second output circuit. When R1_2<R2_2, the detection and adjustment module increases the heating power of the second output circuit.

8. The multi-core temperature control method according to claim 7, characterized in that: The detection and regulation module adjusts the output heating power by adjusting the PWM duty cycle, adjusting the output voltage or introducing a PID algorithm.

9. The multi-core temperature control method according to claim 8, characterized in that: The first heating element and the second heating element can be preset with different temperature combinations. The preset temperature of the first heating element is T2, and the preset temperature of the second heating element is T3, so as to output a heating effect with mixed temperatures.

10. The multi-core temperature control method according to claim 9, characterized in that: The target resistance of the second heating element at the preset temperature T2 is R3. At this time, the target resistances obtained according to the first heating element and the second heating element are R2 and R3 respectively, R2=K×(T2-T1) / R0_1+R0_1, R3=K×(T2-T1) / R0_2+R0_2; when R1_1>R2, the detection and adjustment module reduces the heating power of the first output circuit, and when R1_1<R2, the detection and adjustment module increases the heating power of the first output circuit; when R1_2>R3, the detection and adjustment module reduces the heating power of the second output circuit, and when R1_2<R3, the detection and adjustment module increases the heating power of the second output circuit.