CN-116577581-B - Automatic detection method for matching degree of high-frequency induction heating coil

Abstract

The application relates to the technical field of induction heating circuits, and discloses an automatic detection method for the matching degree of a high-frequency induction heating coil. The automatic detection method comprises the steps of presetting a data recording module in a control chip to record operation data acquired by a received sampling module, analyzing the operation data by the control chip to adjust the operation frequency of a high-frequency induction heating system, judging whether the operation power output by an induction heating circuit in the frequency range of the high-frequency induction heating system meets a preset proportion or not by the control chip, outputting a judgment result of an induction coil and the high-frequency induction heating system as 'matching' if the preset proportion is met, outputting a judgment result of the induction coil and the high-frequency induction heating system as 'not matching' if the preset proportion is not met, and outputting corresponding debugging prompt information. The application provides a detection method which can assist customers to better optimize the induction coil under the condition of no special measuring tool so as to detect the matching degree of the induction coil to related equipment.

Inventors

• GAO GANG
• YUE CHENGWU
• Tang Chaomin

Assignees

• 广东众创电源技术有限公司

Dates

Publication Date

20260505

Application Date

20230516

Claims (7)

1. 1. The automatic detection method of the matching degree of the high-frequency induction heating coil is applied to a high-frequency induction heating system, the high-frequency induction heating system comprises an induction heating circuit, a sampling module and a control chip, the output end of the induction heating circuit is connected with the induction coil, and the control chip is respectively electrically connected with the induction heating circuit and the sampling module in a communication manner so as to realize the transmission of signal and data information, and the automatic detection method is characterized in that: The control chip is internally preset with a data recording module for recording the received operation data acquired by the sampling module, and the control chip drives the induction heating circuit to start to operate for a first duration from the highest frequency of the high-frequency induction heating system; The control chip analyzes the operation data to adjust the operation frequency of the high-frequency induction heating system, and comprises the steps that the control chip receives and analyzes the operation data to obtain average power, the frequency change step length of the high-frequency induction heating system is modified according to the average power, the frequency change step length is the difference between the current frequency value and the next frequency value, the operation frequency of the high-frequency induction heating system is reduced according to the frequency change step length, then the induction heating circuit is driven to continue to operate for the first duration, in the frequency range of the high-frequency induction heating system, when the maximum power point of the induction heating circuit is detected, the induction heating circuit stops operating, and the maximum power point is the corresponding operating point when the average power exceeds the maximum power value of the high-frequency induction heating system; The control chip judges whether the operation power output by the induction heating circuit in the frequency range of the high-frequency induction heating system meets a preset proportion or not, wherein the preset proportion is the ratio of the operation power of the induction heating circuit to the maximum power value of the high-frequency induction heating system; If the preset proportion is met, outputting a judging result of 'matching' of the induction coil and the high-frequency induction heating system; if the preset proportion is not met, outputting a judgment result of the induction coil and the high-frequency induction heating system as 'mismatch', and outputting corresponding debugging prompt information.
2. 2. The automatic detection method of matching degree of a high-frequency induction heating coil according to claim 1, further comprising, after the step of modifying the frequency variation step of the high-frequency induction heating system according to the average power: And if the signal of finishing the frequency change step length modification by the high-frequency induction heating system is received, stopping running for a second time period.
3. 3. The method of claim 1, further comprising, after the step of stopping the operation of the induction heating circuit when the maximum power point of the induction heating circuit is detected in the frequency range of the high-frequency induction heating system: When the operating frequency of the high-frequency induction heating system is reduced to the minimum value, the maximum power point of the induction heating circuit is not detected yet, and the induction heating circuit stops operating.
4. 4. The automatic detection method for matching degree of high-frequency induction heating coil according to claim 1, wherein the high-frequency induction heating system establishes an association link relation with a display to realize transmission of signal and data information, the display is used for displaying a setting interface, and the setting interface is pre-provided with a result display module and a test confirmation module, and the automatic detection method is characterized in that before the step of driving the induction heating circuit to run for a first period from the highest frequency of the high-frequency induction heating system, the automatic detection method further comprises: Presetting a frequency range of the high-frequency induction heating system in the control chip; and if the control chip receives a signal for triggering the test confirmation module by a user, driving the induction heating circuit to start to operate.
5. 5. The method according to claim 4, wherein the step of the control chip judging whether the operation power outputted from the induction heating circuit in the frequency range of the high frequency induction heating system satisfies a preset ratio comprises: Generating an operation record table according to the operation data; generating a frequency-power curve of the induction heating circuit according to the operation record table; analyzing the frequency-power curve to obtain the power condition of the induction heating circuit under each operating frequency of the high-frequency induction heating system; And judging whether the running power output by the induction heating circuit in the frequency range of the high-frequency induction heating system meets a preset proportion or not according to the power condition.
6. 6. The method according to claim 5, wherein after the step of determining whether the operating power output by the induction heating circuit in the frequency range of the high-frequency induction heating system satisfies a preset ratio according to the power condition, further comprising: And outputting the judging result in a text form and displaying the judging result on the result display module, wherein the display information of the result display module comprises an induction coil matching result, the maximum power point and the frequency corresponding to the maximum power point.
7. 7. The automatic detection method of matching degree of a high-frequency induction heating coil according to claim 1, wherein the preset proportion is 5% -100%.

Description

Automatic detection method for matching degree of high-frequency induction heating coil Technical Field The application relates to the technical field of induction heating circuits, in particular to an automatic detection method for matching degree of a high-frequency induction heating coil. Background In the induction heating circuit, the inversion output side is connected in series or in parallel with the induction coil, the power with different magnitudes is output through the states of the capacitor and the induction coil, the output capacitor is generally of a fixed capacity set by a factory, and the induction coil is wound by a customer. Each device has its fixed operating frequency range, and induction coil mismatch is often a problem due to the different winding processes of different customers. The induction coil is too short or too long, which causes different inductance of the induction coil, and the induction heating circuit can not be normally used because the output power is different, even too large or too small when the induction heating circuit is operated. Therefore, in order to assist customers in better optimizing the induction coil without special measuring tools, a detection method is proposed to detect the matching degree of the induction coil to the relevant equipment. Disclosure of Invention The application aims to solve the technical problem of providing a detection method which can help customers to better optimize an induction coil under the condition of no special measuring tool so as to detect the matching degree of the induction coil to related equipment. In order to solve the above problems, the present application provides an automatic detection method for matching degree of a high-frequency induction heating coil, the automatic detection method is applied to a high-frequency induction heating system, the high-frequency induction heating system includes an induction heating circuit, a sampling module and a control chip, an output end of the induction heating circuit is connected with the induction coil, and the control chip establishes an electrical connection and a communication connection with the induction heating circuit and the sampling module respectively to realize transmission of signal and data information, the automatic detection method includes: a data recording module is preset in the control chip to record the received operation data acquired by the sampling module, wherein the operation data comprises the operation frequency and the operation power of the induction heating circuit; the control chip analyzes the operation data to adjust the operation frequency of the high-frequency induction heating system; The control chip judges whether the operation power output by the induction heating circuit in the frequency range of the high-frequency induction heating system meets a preset proportion or not, wherein the preset proportion is the ratio of the operation power of the induction heating circuit to the maximum power value of the high-frequency induction heating system; If the preset proportion is met, outputting a judging result of 'matching' of the induction coil and the high-frequency induction heating system; if the preset proportion is not met, outputting a judgment result of the induction coil and the high-frequency induction heating system as 'mismatch', and outputting corresponding debugging prompt information. Preferably, a data recording module is preset in the control chip to record the received operation data collected by the sampling module, including: the control chip drives the induction heating circuit to run for a first period of time from the highest frequency of the high-frequency induction heating system; And if the induction heating circuit receives the signal for finishing running the first time, the sampling module records the running data. Preferably, the step of analyzing the operation data by the control chip to adjust the operation frequency of the high-frequency induction heating system includes: the control chip receives and analyzes the operation data to obtain average power; Modifying the frequency change step length of the high-frequency induction heating system according to the average power, wherein the frequency change step length is the difference value from the current frequency value to the next frequency value; Reducing the operating frequency of the high-frequency induction heating system according to the frequency change step length, and then driving the induction heating circuit to continue to operate for the first time period; And in the frequency range of the high-frequency induction heating system, when the maximum power point of the induction heating circuit is detected, stopping the operation of the induction heating circuit, wherein the maximum power point is a working point corresponding to the condition that the average power exceeds the maximum power value of the high-frequency induction heating system. Preferab