A power supply multi-stage protection method and system

Abstract

The application discloses a power supply multistage protection method and system, and relates to the technical field of circuit protection.The system comprises an EMI protection module, a rectification filtering module, a radio frequency output module, a temperature monitoring module and a power protection module; the input end of the EMI protection module is connected with an input voltage, and the output end is connected with the input end of the rectification filtering module; the output end of the rectification filtering module is connected with the input end of the radio frequency output module; the output end of the radio frequency output module is connected with a radio frequency ion source; the input end of the temperature monitoring module is connected with the radio frequency output module, and the control end of the power protection module; and the control end of the power protection module is connected with the radio frequency output module.The application carries out EMI protection when the load is impacted, reduces the electromagnetic interference on the power supply, monitors the temperature of the circuit after EMI protection, outputs the working temperature to the power protection module, adjusts the output power of the radio frequency output module, and improves the stability of the radio frequency power supply.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit protection, in particular to a power supply multi-level protection method and system. BACKGROUND

[0002] A radio frequency power supply circuit is a circuit that can provide stable and controllable radio frequency energy and is widely used in wireless communication, industrial heating, medical devices and other fields. The radio frequency signal provided by the radio frequency power supply is crucial to the ion source, which needs to be kept stable to ensure that the ion source can operate efficiently.

[0003] The existing radio frequency power supply protection system detects the voltage standing wave ratio or large current of the radio frequency power supply, which requires adding a large amount of additional hardware in the system, the system is complex and the cost is high, and at the same time, there is a certain lag in the detection process, and the stability of the radio frequency power supply is low. SUMMARY

[0004] The purpose of the present application is to provide a power supply multi-level protection method and system, which reduces the electromagnetic interference on the power supply by performing EMI protection when the load is impacted, and adjusts the output power of the radio frequency output module by monitoring the temperature of the circuit after electromagnetic interference protection and outputting the working temperature to the power protection module, thereby improving the stability of the radio frequency power supply.

[0005] The purpose of the present application is achieved by the following technical means:

[0006] In a first aspect, the present application provides a power supply multi-level protection system, comprising: an EMI protection module, a rectifier filter module, a radio frequency output module, a temperature monitoring module and a power protection module.

[0007] The input end of the EMI protection module is connected with the input voltage, and the output end of the EMI protection module is connected with the input end of the rectifier filter module.

[0008] The output end of the rectifier filter module is connected with the input end of the radio frequency output module.

[0009] The output end of the radio frequency output module is connected with a radio frequency ion source.

[0010] The input end of the temperature monitoring module is connected with the radio frequency output module, the output end of the temperature monitoring module is connected with the control end of the power protection module, and the power protection module is connected with the control end of the radio frequency output module.

[0011] The EMI protection module is used for electromagnetic interference protection on the input voltage.

[0012] The temperature monitoring module is used to monitor the temperature of the radio frequency output module and output the monitoring results to the power protection module.

[0013] The power protection module is used to adjust the output power of the radio frequency output module based on the monitoring results of the temperature monitoring module.

[0014] Preferably, the rectifier and filter module is used to perform DC-DC conversion on the input voltage and to filter the DC-converted input voltage;

[0015] The radio frequency output module is used to perform inversion and amplification processing on the filtered input voltage, and output a radio frequency signal of a set frequency to the radio frequency ion source.

[0016] Preferably, the power supply multi-level protection system further includes: a current monitoring module;

[0017] The input terminal of the current monitoring module is connected to the output terminal of the radio frequency output module, the output terminal of the current monitoring module is connected to the control terminal of the power protection module, and the control terminal of the current monitoring module is connected to the output terminal of the temperature monitoring module.

[0018] The current monitoring module is used to monitor the output current of the RF output module based on the monitoring results of the temperature monitoring module, and output the monitoring results to the power protection module.

[0019] Preferably, the power protection module includes: a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a first resistor, a second resistor, a third resistor, a fourth resistor, and a fifth resistor;

[0020] The first terminal of the first switch is connected to the radio frequency output module, the second terminal of the first switch is connected to the first terminal of the first resistor, and the second terminal of the first resistor is grounded.

[0021] The first terminal of the second switch is connected to the radio frequency output module, the second terminal of the second switch is connected to the first terminal of the second resistor, and the second terminal of the second resistor is grounded.

[0022] The first terminal of the third switch is connected to the radio frequency output module, the second terminal of the third switch is connected to the first terminal of the third resistor, and the second terminal of the third resistor is grounded.

[0023] The first terminal of the fourth switch is connected to the radio frequency output module, the second terminal of the fourth switch is connected to the first terminal of the fourth resistor, and the second terminal of the fourth resistor is grounded.

[0024] The first end of the fifth switch is connected with the radio frequency output module, the second end of the fifth switch is connected with the first end of the fifth resistor, and the second end of the fifth resistor is grounded.

[0025] In a second aspect, the present application provides a power multi-stage protection method, applied to the power multi-stage protection system, comprising the following steps:

[0026] An input voltage of an input power is acquired.

[0027] The input voltage is subjected to EMI protection, and the input voltage subjected to the EMI protection is subjected to rectification filtering.

[0028] The input voltage subjected to the rectification filtering is subjected to power conversion, and the input voltage subjected to the power conversion is output to a radio frequency ion source.

[0029] The working temperature of the radio frequency output module is acquired in real time.

[0030] The output power of the radio frequency output module is adjusted according to the working temperature.

[0031] Preferably, the adjusting of the output power of the radio frequency output module according to the working temperature comprises the following steps:

[0032] The working temperature is compared with a first temperature threshold value.

[0033] When the working temperature is greater than or equal to the first temperature threshold value, the working temperature is converted into binary data.

[0034] The binary data is output to a power protection module.

[0035] The power protection module accesses a voltage dividing resistor to the radio frequency output module according to the binary data.

[0036] Preferably, the adjusting of the output power of the radio frequency output module according to the working temperature further comprises the following steps:

[0037] The working temperature is compared with a second temperature threshold value.

[0038] When the working temperature is greater than the second temperature threshold value, an over-temperature alarm is performed.

[0039] An over-temperature signal is output to a current monitoring module.

[0040] The current monitoring module acquires an output current of the radio frequency output module.

[0041] The output current is compared with a reference current.

[0042] When the output current is greater than or equal to the reference current, a cut-off signal is output to the power protection module.

[0043] Preferably, the first temperature threshold is 65 DEG C, and the second temperature threshold is 95 DEG C.

[0044] In a third aspect, the present application provides an electronic device, comprising a processor and a memory, the memory being configured to store computer program codes, the computer program codes comprising computer instructions, when the processor executes the computer instructions, the electronic device executes the power multi-stage protection method.

[0045] In a fourth aspect, the present application provides a computer readable storage medium, the computer readable storage medium storing a computer program, the computer program comprising program instructions, when the program instructions are executed by a processor of an electronic device, the processor executes the power multi-stage protection method.

[0046] Compared with the prior art, the present application has the following beneficial effects:

[0047] The present application reduces the electromagnetic interference on the power supply by performing EMI protection when the load is impacted, and improves the stability of the radio frequency power supply by monitoring the temperature of the circuit after the electromagnetic interference protection, outputting the working temperature to the power protection module to adjust the output power of the radio frequency output module.

[0048] In the present embodiment, the output current of the radio frequency output module is monitored, and secondary protection is performed when the temperature monitoring fails or is invalid, the monitoring result is output to the power protection module to adjust the output power of the radio frequency output module, and the stability of the radio frequency power supply is improved. BRIEF DESCRIPTION OF DRAWINGS

[0049] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without any creative labor.

[0051] Figure 1 A structural schematic diagram of a power multi-stage protection system provided in the present embodiment is shown in the figure.

[0052] Figure 2 A structural schematic diagram of another power multi-stage protection system provided in the present embodiment is shown in the figure.

[0053] Figure 3 A flowchart of a power multi-level protection method provided in the embodiment is shown in the figure;

[0054] Figure 4 A flowchart of step S5 provided in the embodiment is shown in the figure, which is adjusting the output power of the radio frequency output module according to the working temperature;

[0055] Figure 5 A structural diagram of an electronic device provided in the embodiment is shown in the figure. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0057] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directionality indications also change accordingly.

[0058] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0059] Embodiment one

[0060] The embodiment provides a power multi-level protection system, as shown in the figure, which comprises an EMI protection module, a rectification filtering module, a radio frequency output module, a temperature monitoring module and a power protection module. Figure 1

[0061] The input end of the EMI protection module is connected with an input voltage, and the output end of the EMI protection module is connected with the input end of the rectification filtering module.

[0062] The output end of the rectification filtering module is connected with the input end of the radio frequency output module.

[0063] ​The output end of the radio frequency output module is connected with the radio frequency ion source.

[0064] The input end of the temperature monitoring module is connected with the radio frequency output module, the output end of the temperature monitoring module is connected with the control end of the power protection module, and the power protection module is connected with the control end of the radio frequency output module.

[0065] The EMI protection module is used for electromagnetic interference protection of the input voltage.

[0066] The temperature monitoring module is used for monitoring the temperature of the radio frequency output module and outputting the monitoring result to the power protection module.

[0067] The power protection module is used for adjusting the output power of the radio frequency output module according to the monitoring result of the temperature monitoring module.

[0068] The rectification and filtering module is used for direct current conversion of the input voltage and filtering processing of the direct current converted input voltage.

[0069] The radio frequency output module is used for inverting processing and amplifying processing of the filtered input voltage and outputting the radio frequency signal of a set frequency to the radio frequency ion source.

[0070] It should be noted that the rectification and filtering module receives the alternating current input from the outside, rectifies the alternating current into direct current and filters out the ripple in the direct current, thereby improving the stability of the circuit; the radio frequency output module is the core module of the radio frequency power supply, which is responsible for converting the direct current after rectification and filtering into high-frequency alternating current of the required frequency of the radio frequency ion source. On the basis of the power supply circuit, the EMI protection module is arranged between the input voltage and the rectification and filtering module to reduce the electromagnetic interference of the radio frequency output circuit, at the same time, the temperature of the radio frequency output module is obtained through the temperature sensor, the temperature monitoring module and the power protection module are arranged, and the output power of the radio frequency output module is adjusted according to the temperature of the radio frequency output module. Generally, when the circuit is impacted, the temperature of the radio frequency output module rises, the output power becomes larger, and the electromagnetic interference and serious heating will cause the occurrence of chain failure of the circuit. Therefore, the output power of the radio frequency output module is reduced according to the temperature of the radio frequency output module, thereby further improving the stability of the radio frequency power supply.

[0071] In the embodiment, the EMI protection is performed when the load is impacted, the electromagnetic interference of the power supply is reduced, the temperature of the circuit after the electromagnetic interference protection is monitored, the working temperature is output to the power protection module to adjust the output power of the radio frequency output module, and the stability of the radio frequency power supply is improved.

[0072] In some embodiments, as shown in Figure 2 the power supply multi-stage protection system further comprises a current monitoring module.

[0073] The input end of the current monitoring module is connected with the output end of the radio frequency output module, the output end of the current monitoring module is connected with the control end of the power protection module, and the control end of the current monitoring module is connected with the output end of the temperature monitoring module.

[0074] The current monitoring module is used for monitoring the output current of the radio frequency output module according to the monitoring result of the temperature monitoring module, and outputting the monitoring result to the power protection module.

[0075] It should be noted that the control end of the current monitoring module is connected with the output end of the temperature monitoring module, which means that the current monitoring module works according to the temperature monitoring result. When the temperature of the circuit exceeds the range that can be controlled by the temperature monitoring module or the temperature monitoring module fails, the current monitoring module needs to be started to control the output current of the radio frequency output module.

[0076] In the embodiment, the output current of the radio frequency output module is monitored, and secondary protection is performed when the temperature monitoring fails or is invalid. The monitoring result is output to the power protection module to adjust the output power of the radio frequency output module, thereby improving the stability of the radio frequency power supply.

[0077] In some embodiments, the power protection module comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a first resistor, a second resistor, a third resistor, a fourth resistor and a fifth resistor.

[0078] The first end of the first switch is connected with the radio frequency output module, the second end of the first switch is connected with the first end of the first resistor, and the second end of the first resistor is grounded.

[0079] The first end of the second switch is connected with the radio frequency output module, the second end of the second switch is connected with the first end of the second resistor, and the second end of the second resistor is grounded.

[0080] The first end of the third switch is connected with the radio frequency output module, the second end of the third switch is connected with the first end of the third resistor, and the second end of the third resistor is grounded.

[0081] The first end of the fourth switch is connected with the radio frequency output module, the second end of the fourth switch is connected with the first end of the fourth resistor, and the second end of the fourth resistor is grounded.

[0082] The first end of the fifth switch is connected with the radio frequency output module, the second end of the fifth switch is connected with the first end of the fifth resistor, and the second end of the fifth resistor is grounded.

[0083] It should be noted that the first switch, the second switch, the third switch, the fourth switch and the fifth switch are controlled by the temperature signal input by the temperature monitoring module. When the temperature of the radio frequency output module is higher, the temperature signal input by the temperature monitoring module controls more voltage dividing resistors to be connected to the control end of the radio frequency output module, so as to reduce the voltage of the control end and reduce the output power of the radio frequency output module.

[0084] It should be understood that the disclosed system can be implemented in other ways. For example, the above-described system embodiments are only illustrative, for example, the division of the above-mentioned modules is only a logical function division, and actual implementation can have another division manner, for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, each functional module can be integrated in one processing module, or each module can be physically present alone, or two or more modules can be integrated in one module. The above-mentioned integrated module can be realized in the form of hardware or in the form of software functional module.

[0085] Embodiment two

[0086] The embodiment provides a multi-level protection method of a power supply, applied to the multi-level protection system of the power supply, as shown in the figure, comprising the following steps: Figure 3

[0087] S1, acquiring an input voltage of an input power supply;

[0088] S2, performing EMI protection on the input voltage, and performing rectification filtering on the input voltage after the EMI protection;

[0089] S3, performing power conversion on the input voltage after the rectification filtering, and outputting the input voltage after the power conversion to a radio frequency ion source;

[0090] S4, acquiring a working temperature of a radio frequency output module in real time;

[0091] S5, adjusting the output power of the radio frequency output module according to the working temperature.

[0092] In some embodiments, step S5, adjusting the output power of the radio frequency output module according to the working temperature, as shown in the figure, comprises the following steps: Figure 4

[0093] S51, comparing the working temperature with a first temperature threshold;

[0094] S52, when the working temperature is greater than or equal to the first temperature threshold, converting the working temperature into binary data;

[0095] S53, outputting the binary data to a power protection module; ​​

[0096] S54, the power protection module accesses the voltage dividing resistor according to the binary data.

[0097] It should be noted that the temperature monitoring module needs to monitor the working temperature of the radio frequency output module. When the working temperature of the radio frequency output module is in the normal range or in the acceptable range of high temperature, the temperature monitoring module does not need to control the power protection module to regulate the power of the radio frequency output module; when the working temperature of the radio frequency output module is greater than or equal to the first threshold value, the temperature monitoring module outputs the working temperature to the power protection module. In some embodiments, the first temperature threshold is 65℃. The power protection module controls the on-off of each switch according to the working temperature output by the temperature monitoring module. Specifically, the temperature monitoring module converts the working temperature into binary data, and controls the on-off of the five switches by acquiring the last five bits of the binary data as the temperature signal. For example, the zeroth bit of the binary data controls the on-off of the first switch, the first bit of the binary data controls the on-off of the second switch, and so on. When the temperature signal is low, the switch is turned off, and when the temperature signal is high, the switch is turned on, and the voltage dividing resistor in the branch of the switch is accessed.

[0098] In this embodiment, by performing EMI protection when the load is impacted, the electromagnetic interference on the power supply is reduced, and by monitoring the temperature of the circuit after electromagnetic interference protection, the working temperature is output to the power protection module to adjust the output power of the radio frequency output module, thereby improving the stability of the radio frequency power supply.

[0099] In some embodiments, step S5, adjusting the output power of the radio frequency output module according to the working temperature, further comprises the following steps:

[0100] comparing the working temperature with a second temperature threshold;

[0101] when the working temperature is greater than the second temperature threshold, over-temperature warning is performed;

[0102] outputting an over-temperature signal to the current monitoring module;

[0103] the current monitoring module acquires the output current of the radio frequency output module;

[0104] comparing the output current with a reference current;

[0105] when the output current is greater than or equal to the reference current, outputting a cut-off signal to the power protection module.

[0106] It should be noted that when the temperature of the radio frequency output module is too high and exceeds the protection range of the power protection module, the protection capability of the radio frequency power supply is insufficient, although the voltage dividing resistor branch of the power protection module is continuously increased, but this will affect the overall structure of the circuit, increase the volume of the circuit, and when the temperature monitoring module fails, no temperature signal is output to the power protection module, and the power protection module considers that the working temperature of the radio frequency output module does not reach the first temperature threshold, and the radio frequency power supply cannot be protected. Therefore, by monitoring the working temperature, when the working temperature is greater than or equal to the second threshold, the temperature monitoring module performs over-temperature warning and outputs an over-temperature signal to the current monitoring module, and then monitors the output current of the radio frequency output module. Specifically, the temperature monitoring module outputs its working signal and over-temperature signal to the current monitoring module, and the current monitoring module determines whether to start monitoring according to the working signal and the over-temperature signal of the temperature monitoring module. When the current monitoring module monitors that the output current is greater than or equal to the set reference current, the current monitoring module outputs a cut-off signal to the power protection module, and the power protection module cuts off the control voltage of the control terminal of the radio frequency output module. In some embodiments, the second temperature threshold is 95℃.

[0107] In this embodiment, by monitoring the output current of the radio frequency output module, secondary protection is performed when the temperature monitoring fails or is invalid, and the monitoring result is output to the power protection module to adjust the output power of the radio frequency output module, thereby improving the stability of the radio frequency power supply.

[0108] Embodiment three

[0109] This embodiment provides an electronic device 2, as shown in Figure 5 The processor 21 and the memory 22, the memory 22 is used for storing computer program code, the computer program code includes computer instructions, when the processor 21 executes the computer instructions, the electronic device executes the power multi-stage protection method described above.

[0110] The electronic device 2 includes a processor 21, a memory 22, an output device 23 and an input device 24. The processor 21, the memory 22, the output device 23 and the input device 24 are coupled by a connector, which includes various interfaces, transmission lines or buses, etc., and the embodiments of the present application are not limited thereto. It should be understood that in various embodiments of the present application, coupling means mutual contact in a specific way, including direct connection or indirect connection through other devices, for example, various interfaces, transmission lines, buses, etc.

[0111] The processor 21 can be one or more graphics processing units (GPUs), which can be single-core GPUs or multi-core GPUs. Alternatively, the processor 21 can be a processor group composed of multiple GPUs, and the multiple processors are coupled with each other through one or more buses. Alternatively, the processor 21 can be other types of processors, and the embodiments of the present application are not limited thereto.

[0112] The memory 22 can be used to store computer program instructions, and various types of computer program codes for executing the schemes of the present application. Alternatively, the memory 22 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read only memory (EPROM), or a compact disc read-only memory (CD-ROM), which is used for storing relevant instructions and data.

[0113] The input device 24 is used to input data and / or signals, and the output device 23 is used to output data and / or signals. The output device 23 and the input device 24 can be independent devices, or can be an integral device.

[0114] The embodiments provide a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program includes program instructions, and the program instructions, when executed by a processor of an electronic device, cause the processor to perform the power multi-level protection method.

[0115] The above is only a specific implementation of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for multi-level protection of a power supply, the method being applied to a multi-level protection system of a power supply, characterized in that, The power multi-stage protection system comprises an EMI protection module, a rectification filtering module, a radio frequency output module, a temperature monitoring module and a power protection module; an input end of the EMI protection module is connected with an input voltage, an output end of the EMI protection module is connected with an input end of the rectification filtering module; an output end of the rectification filtering module is connected with an input end of the radio frequency output module; an output end of the radio frequency output module is connected with a radio frequency ion source; an input end of the temperature monitoring module is connected with the radio frequency output module, an output end of the temperature monitoring module is connected with a control end of the power protection module, and the power protection module is connected with a control end of the radio frequency output module; the EMI protection module is used for electromagnetic interference protection of the input voltage; the temperature monitoring module is used for monitoring the temperature of the radio frequency output module and outputting the monitoring result to the power protection module; The power protection module is used for adjusting the output power of the radio frequency output module according to the monitoring result of the temperature monitoring module. The power multi-stage protection method comprises the following steps: An input voltage of an input power is acquired; The input voltage is subjected to EMI protection, and the EMI-protected input voltage is subjected to rectification filtering; The rectification-filtered input voltage is subjected to power conversion, and the power-converted input voltage is output to a radio frequency ion source; The working temperature of the radio frequency output module is acquired in real time; The output power of the radio frequency output module is adjusted according to the working temperature; the step comprises: The working temperature is compared with a first temperature threshold value; When the working temperature is greater than or equal to the first temperature threshold value, the working temperature is converted into binary data; The binary data is output to a power protection module; The power protection module connects a voltage dividing resistor to the radio frequency output module according to the binary data; The output power of the radio frequency output module is adjusted according to the working temperature, and the step further comprises: The working temperature is compared with a second temperature threshold value; When the working temperature is greater than the second temperature threshold value, an over-temperature alarm is given; An over-temperature signal is output to a current monitoring module; The current monitoring module acquires the output current of the radio frequency output module; The output current is compared with a reference current; When the output current is greater than or equal to the reference current, a cut-off signal is output to the power protection module.

2. The method of claim 1, wherein, The rectification filtering module is used for direct current conversion of the input voltage and filtering processing of the direct current-converted input voltage; The radio frequency output module is used for inverter processing and amplification processing of the filtered input voltage, and a radio frequency signal of a set frequency is output to a radio frequency ion source.

3. The method of claim 1, wherein, The power multi-stage protection system further comprises a current monitoring module; An input end of the current monitoring module is connected with an output end of the radio frequency output module, an output end of the current monitoring module is connected with a control end of the power protection module, and a control end of the current monitoring module is connected with an output end of the temperature monitoring module. The current monitoring module is configured to monitor the output current of the radio frequency output module according to the monitoring result of the temperature monitoring module, and output the monitoring result to the power protection module.

4. The method of claim 1, wherein, The power protection module comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a first resistor, a second resistor, a third resistor, a fourth resistor and a fifth resistor. The first end of the first switch is connected with the radio frequency output module, the second end of the first switch is connected with the first end of the first resistor, and the second end of the first resistor is grounded. The first end of the second switch is connected with the radio frequency output module, the second end of the second switch is connected with the first end of the second resistor, and the second end of the second resistor is grounded. The first end of the third switch is connected with the radio frequency output module, the second end of the third switch is connected with the first end of the third resistor, and the second end of the third resistor is grounded. The first end of the fourth switch is connected with the radio frequency output module, the second end of the fourth switch is connected with the first end of the fourth resistor, and the second end of the fourth resistor is grounded. The first end of the fifth switch is connected with the radio frequency output module, the second end of the fifth switch is connected with the first end of the fifth resistor, and the second end of the fifth resistor is grounded.

5. The method of claim 1, wherein, The first temperature threshold is 65℃, and the second temperature threshold is 95℃.

6. An electronic device, comprising: The electronic device comprises a processor and a memory, the memory is configured to store computer program code, the computer program code comprises computer instructions, and when the processor executes the computer instructions, the electronic device executes the power multi-stage protection method according to any one of claims 1 to 5.

7. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, the computer program comprises program instructions, and the program instructions make the processor execute the power multi-stage protection method according to any one of claims 1 to 5 when the processor executes the program instructions.

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