Fusing control method, electronic fuse, electronic circuit and readable storage medium

Abstract

The invention provides a fusing control method, an electronic fuse, an electronic circuit and a readable storage medium, and the method comprises the steps: firstly, continuously obtaining a current value signal group in a load module; obtaining a current average value according to the current value signal group; and integrating the square of the current average current value according to the corresponding positive integral step length or negative integral step length to obtain a current integral current value. Therefore, the fusing control method can adapt to fusing detection on the fusing curve corresponding to the load module. In addition, according to the comparison result of the current average value and the first preset threshold value, the integral step length corresponding to the current average value is obtained. Therefore, the fusing control method can be suitable for electronic fusing detection of various dynamic signals, and has high flexibility, such as direct current signals, alternating current signals or pulse width modulation current signals.

Description

Technical Field

[0001] The present invention relates to the field of electronic circuits, and in particular to a fusing control method, an electronic fuse, an electronic circuit and a readable storage medium. Background Art

[0002] Electronic fuses use electronic components to monitor and control parameters such as current and voltage in conductors. When a fault such as an overload or short circuit occurs in the conductor, causing the current or voltage to exceed a set threshold, the electronic fuse responds quickly, using its internal electronic switching mechanism to disconnect the circuit in a fraction of a second, thereby protecting other components in the circuit from damage. Algorithm-based electronic fuses are intelligent circuit protection devices that utilize advanced algorithms to monitor and analyze various circuit parameters in real time, achieving precise and rapid protection.

[0003] However, existing electronic fuses are difficult to adapt to the fuse detection of various dynamic signals. Summary of the Invention

[0004] The present invention provides a fusing control method, an electronic fuse, an electronic circuit and a readable storage medium to solve the problem that the electronic fuse is difficult to adapt to fusing detection of multiple dynamic signals.

[0005] According to a first aspect of the present invention, a fusing control method is provided. The fusing control method is used to control an electronic fuse, wherein the electronic fuse is used to protect a load module. The fusing control method includes: Obtain the positive integral curve and negative integral curve of the fuse; Continuously acquiring a current value signal group in a load module, wherein the current value signal group includes a plurality of current values ​​obtained by collecting currents flowing through the load module within a unit time; Obtain the current average value of the current according to the current current value signal group; According to the comparison result of the current average current value and the first preset threshold value, a first positive integral step length or a first negative integral step length corresponding to the current average current value is obtained: if the current average current value is greater than the first preset threshold value, the corresponding first positive integral step length is obtained through the fuse positive integral curve; if the current average current value is less than or equal to the first preset threshold value, the corresponding first negative integral step length is obtained through the fuse negative integral curve; Performing a superposition process based on the current average value and the corresponding positive integration step size or negative integration step size to obtain a current superposition value, including: integrating the square of the current average value according to the corresponding positive integration step size or negative integration step size to obtain a current integral value, and if the current average value is the initial current average value, using the current integral value as the current superposition value; if the current average value is not the initial current average value, using the sum of the current superposition value corresponding to the previous current average value and the current integral value as the current superposition value; When the current superposition value is greater than or equal to a second preset threshold, a fuse signal is output.

[0006] Optionally, the method for obtaining the current average current value according to the current current value signal group includes: performing a root mean square operation on multiple current values ​​in the current current value signal group to obtain the current average current value.

[0007] Optionally, the method for obtaining the positive integral curve and the negative integral curve of the blown circuit includes: Setting a melting start current value of the electronic fuse and a melting time corresponding to the melting start current; Set the polynomial function; Fitting the fuse positive integral curve according to the polynomial function; The negative integral curve of the melting is obtained according to the positive integral curve of the melting. The negative integral curve of the melting is symmetrical with the positive integral curve of the melting about a first symmetry line. The first symmetry line is parallel to the vertical axis, perpendicular to the horizontal axis and passes through (I0, T0), wherein I0 is used to characterize the melting starting current value, and T0 is used to characterize the melting time corresponding to the melting starting current.

[0008] Optionally, the first preset threshold is equal to the fuse starting current value.

[0009] Optionally, the positive integral curve of the blown circuit corresponds to a positive integral lookup table, and the negative integral curve of the blown circuit corresponds to a negative integral lookup table, and the method of obtaining the positive integral lookup table and the negative integral lookup table includes: Selecting N points on the positive integral curve of the blown fuse, and dividing the positive integral curve of the blown fuse into N+1 positive integral intervals; Calculating the positive integral lookup table, wherein the positive integral lookup table includes the N+1 positive integral intervals and a first positive integral step corresponding to the N+1 positive integral intervals; Selecting M points on the negative integral curve of the blown circuit to divide the negative integral curve of the blown circuit into M+1 negative integral intervals; The negative integral lookup table is calculated, where the negative integral lookup table includes the M+1 negative integral intervals and a first negative integral step corresponding to the M+1 negative integral intervals.

[0010] Optionally, if the current average current value is greater than a first preset threshold value, the method for obtaining the corresponding first positive integral step length through the fuse positive integral curve includes: searching the positive integral interval corresponding to the current average current value in the positive integral lookup table; and searching the positive integral lookup table for the first positive integral step length corresponding to the corresponding positive integral interval based on the found positive integral interval; If the current average current value is less than or equal to a first preset threshold value, the method for obtaining the corresponding first negative integral step length through the fuse negative integral curve includes: searching the negative integral interval corresponding to the current average current value in the negative integral lookup table; based on the found negative integral interval, searching the negative integral lookup table for the first negative integral step length corresponding to the corresponding negative integral interval.

[0011] Optionally, after obtaining the first positive integration step corresponding to the corresponding positive integration interval, it also includes: according to the first positive integration step, using the interpolation method to obtain the second positive integration step, or, after obtaining the first negative integration step corresponding to the corresponding negative integration interval, it also includes: according to the first negative integration step, using the interpolation method to obtain the second negative integration step.

[0012] Optionally, the second preset threshold TH=F S *T0*S0; where F S It is used to represent the acquisition frequency of the current value of the conductor in the loop where the electronic fuse is located, T0 is used to represent the fusing time corresponding to the fusing starting current, and S0 is used to represent the minimum value of the integration step.

[0013] According to a second aspect of the present invention, there is provided an electronic fuse for implementing the above-mentioned fusing control method, comprising: a current acquisition module, the current acquisition module being used to acquire the current in the load module and output a current value signal group, the current value signal group including a plurality of current values ​​obtained by acquiring the current values ​​of the conductor in the loop where the electronic fuse is located multiple times; a fusing control module, the fusing control module being configured to obtain a fusing positive integral curve and a fusing negative integral curve, the fusing control module being further configured to generate a corresponding current integral value and a current superposition value based on the received current value signal group, and the fusing control module outputting a fusing signal when the current superposition value is greater than or equal to a second preset threshold value; A switch control module is configured to output a shutoff signal after receiving the fuse signal.

[0014] Optionally, the current acquisition module includes: A current acquisition unit, which is used to load the current in the module and generate a current acquisition signal, which is an analog signal; An analog-to-digital conversion unit is used to convert the current acquisition signal into a current value signal group.

[0015] According to a third aspect of the present invention, there is provided an electronic circuit comprising: A shunt resistor, one end of which is connected to a power supply voltage; The electronic fuse mentioned above; a switch module, one end of which is coupled to the shunt resistor, and the switch module is configured to be turned off according to the shutdown signal; A load module, one end of the load module is connected to the other end of the switch module, and the other end of the load module is grounded.

[0016] According to a fourth aspect of the present invention, a readable storage medium is provided, wherein the readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to implement the above-mentioned fuse control method when executed by a processor.

[0017] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: In a fusing control method provided by the technical solution of the present invention, first, the current value signal group in the load module is continuously acquired, and then the current current average value is obtained according to the current current value signal group. Thereafter, the square of the current current average value is integrated according to the corresponding positive integral step or negative integral step to obtain the current current integral value. Therefore, the corresponding current average value continuously obtained based on the continuously obtained current value signal group is subjected to the same integral processing, so that the fusing control method can adapt to the fusing detection on the fusing curve corresponding to the load module. In addition, since the positive integral step or negative integral step corresponding to the current current average value is obtained according to the comparison result of the current current average value and the first preset threshold value: if the current current average value is greater than the first preset threshold value, the corresponding positive integral step is obtained by fusing the positive integral curve; if the current current average value is less than or equal to the first preset threshold value, the corresponding negative integral step is obtained by fusing the negative integral curve. Therefore, since the step size in the integration processing of the current average value is obtained through the positive integral curve of the fuse and the negative integral curve of the fuse, the fuse control method can be applied to electronic fuse detection of various dynamic signals and has high flexibility. For example, commonly used current signals such as DC signals, AC signals, or pulse width modulated current signals can all be adapted to the fuse control method.

[0018] Furthermore, since after obtaining the first positive integral step corresponding to the corresponding positive integral interval, it also includes: according to the first positive integral step, using the interpolation method to obtain the second positive integral step, or, after obtaining the first negative integral step corresponding to the corresponding negative integral interval, it also includes: according to the first negative integral step, using the interpolation method to obtain the second negative integral step, therefore, using the interpolation method to obtain the second positive integral step or the second negative integral step can reduce the amount of calculation, thereby shortening the time to obtain the positive integral step or the negative integral step corresponding to the current average value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a flow chart of a fuse control method provided by an embodiment of the present invention; Figure 2 is a positive integral curve of the fuse provided by an embodiment of the present invention; Figure 3 is a negative integral curve of the fuse provided by an embodiment of the present invention; Figure 4 This is a current superposition value curve when collecting DC signals provided by an embodiment of the present invention; Figure 5 This is a current superposition value curve when collecting AC signals provided by an embodiment of the present invention; Figure 6 Schematic diagram of the structure of the electronic circuit provided by the embodiment of the present invention. DETAILED DESCRIPTION

[0020] As described in the background art, existing electronic fuses are difficult to adapt to the fuse detection of various dynamic signals.

[0021] In view of this, the technical solution of the present invention creatively proposes a fusing control method, comprising: Obtain the positive integral curve and negative integral curve of the fuse; Continuously acquiring a current value signal group in a load module, wherein the current value signal group includes a plurality of current values ​​obtained by collecting currents flowing through the load module within a unit time; Obtain the current average value of the current according to the current current value signal group; According to the comparison result of the current average current value and the first preset threshold value, a first positive integral step length or a first negative integral step length corresponding to the current average current value is obtained: if the current average current value is greater than the first preset threshold value, the corresponding first positive integral step length is obtained through the fuse positive integral curve; if the current average current value is less than or equal to the first preset threshold value, the corresponding first negative integral step length is obtained through the fuse negative integral curve; Performing a superposition process based on the current average value and the corresponding positive integration step or negative integration step to obtain a current superposition value, including: integrating the square of the current average value according to the corresponding first positive integration step or the first negative integration step to obtain a current integral value, and if the current average value is the initial current average value, using the current integral value as the current superposition value; if the current average value is not the initial current average value, using the sum of the current superposition value corresponding to the previous current average value and the current integral value as the current superposition value; When the current superposition value is greater than or equal to a second preset threshold, a fuse signal is output.

[0022] Therefore, the corresponding current average values ​​continuously obtained based on the continuously acquired current value signal group are subjected to the same integration process, thereby enabling the fusing control method to adapt to fusing detection on the corresponding fusing curve of the load module. Furthermore, because the step size in the integration process of the current average value is derived from the positive and negative fusing integral curves, the fusing control method is applicable to electronic fusing detection of various dynamic signals, providing high flexibility. For example, commonly used current signals such as direct current signals, alternating current signals, and pulse-width modulated current signals are all adaptable to the fusing control method.

[0023] The following will provide a clear and complete description of the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. The terms "first," "second," "third," and so on, in the specification and claims of the present invention, and in the accompanying drawings, are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that such terms are interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product, or apparatus.

[0024] Figure 1 is a flow chart of a fuse control method provided by an embodiment of the present invention. Figure 2 is the positive integral curve of the fuse provided by the embodiment of the present invention, Figure 3 is the negative integral curve of the fuse provided by the embodiment of the present invention. Figure 2 and Figure 3 The horizontal axis in is the logarithm of the current value, that is , Figure 2 and Figure 3 The vertical coordinates in are the logarithms of time, that is, .

[0025] Please refer to Figure 1 , the fuse control method provided by the embodiment of the present invention includes: Step S100: Obtain a positive integral curve of a blown fuse and a negative integral curve of a blown fuse.

[0026] In this embodiment, with respect to step S100, the method for obtaining the positive integral curve and the negative integral curve of the blown circuit includes: Step S110, setting a melting start current value I0 of the electronic fuse and a melting time T0 corresponding to the melting start current; Step S120, setting a polynomial function; Step S130, fitting a positive integral curve of the fuse according to a polynomial function; Step S140, please refer to Figure 2 and Figure 3 , the negative integral curve of melting is obtained according to the positive integral curve of melting. The negative integral curve of melting is symmetrical with the positive integral curve of melting about the first symmetry line. The first symmetry line is parallel to the vertical axis, perpendicular to the horizontal axis and passes through (I0, T0). Among them, I0 is used to represent the melting starting current value, and T0 is used to represent the melting time corresponding to the melting starting current. Figure 2 and Figure 3 The horizontal axis in is the logarithm of the current value, that is , Figure 2 and Figure 3 The vertical coordinates in are the logarithms of time, that is, ,therefore, Figure 2 The positive integral curve of the fuse is Figure 3 The negative integral curve of the melting is not symmetric about the first symmetry line.

[0027] Among them, the fuse curve corresponding to the load module is f(I, T)=I 2 T can be approximated as a logarithmic function, and the difference of the logarithmic functions can be approximated as a polynomial, which is a polynomial function with an order of third or higher. In addition, the coefficients of the polynomial function can be obtained using the least squares method or other numerical approximation methods.

[0028] As an example, suppose the polynomial function has an order of 3 and the logarithmic function has a base of 2. Then suppose the polynomial function is Where (I, T) is used to represent the point on the fuse curve corresponding to the load module, and a, b, c, and d are the coefficients of the polynomial function.

[0029] The method for obtaining the coefficients of the polynomial function includes: taking N points on the fuse curve corresponding to the load module to obtain a set of (I i , T i ) coordinate values, where 1≤i≤N; take the logarithm of the horizontal and vertical coordinates to obtain a corresponding set of coordinate values ; Solve the following equation to find the coefficients of the polynomial function, that is, to find the values ​​of a, b, c, and d. The equation is as follows: in, In this embodiment, the positive integral curve of the fuse corresponds to the positive integral lookup table, and the negative integral curve of the fuse corresponds to the negative integral lookup table. After obtaining the positive integral curve of the fuse and the negative integral curve of the fuse, the positive integral lookup table and the negative integral lookup table can be obtained accordingly. Among them, the method for obtaining the positive integral lookup table includes: selecting N points on the positive integral curve of the fuse, dividing the positive integral curve of the fuse into N+1 positive integral intervals; calculating the positive integral lookup table, the positive integral lookup table includes N+1 positive integral intervals and the first positive integral step corresponding to the N+1 positive integral intervals. Correspondingly, the method for obtaining the negative integral lookup table includes: selecting M points on the negative integral curve of the fuse, dividing the negative integral curve of the fuse into M+1 negative integral intervals; calculating the negative integral lookup table, the negative integral lookup table includes M+1 negative integral intervals and the first negative integral step corresponding to the M+1 negative integral intervals.

[0030] Step S200 : continuously acquiring a current value signal group in the load module, where the current value signal group includes a plurality of current values ​​obtained by collecting the current flowing through the load module within a unit time.

[0031] Step S300 , obtaining the current average current value according to the current current value signal group.

[0032] In this embodiment, with respect to step S300 , the method for obtaining the current average current value according to the current current value signal group includes: performing a root mean square operation on multiple current values ​​in the current current value signal group to obtain the current average current value.

[0033] Step S400, based on the comparison result of the current average current value and the first preset threshold value, obtain the first positive integral step or the first negative integral step corresponding to the current average current value: if the current average current value is greater than the first preset threshold value, obtain the corresponding first positive integral step by fusing the positive integral curve; if the current average current value is less than or equal to the first preset threshold value, obtain the corresponding first negative integral step by fusing the negative integral curve.

[0034] The first preset threshold is equal to the fusing starting current value I0.

[0035] Specifically, with respect to step S400, if the current average current value is greater than the first preset threshold, the method of obtaining the corresponding first positive integral step length by fusing the positive integral curve includes: Step S410, searching a positive integral interval corresponding to the current average value in a positive integral lookup table; Step S420 : searching a positive integral lookup table for a first positive integral step length corresponding to the positive integral interval according to the found positive integral interval.

[0036] Alternatively, with respect to step S400, if the current average current value is less than or equal to the first preset threshold, the method for obtaining the corresponding first negative integral step length by fusing the negative integral curve includes: Step S410, searching a negative integral interval corresponding to the current average value in a negative integral lookup table; Step S420: According to the found negative integral interval, a first negative integral step length corresponding to the corresponding negative integral interval is searched in a negative integral lookup table.

[0037] Furthermore, after obtaining the first positive integration step corresponding to the corresponding positive integration interval, the method further includes: obtaining a second positive integration step using an interpolation method based on the first positive integration step, or, after obtaining the first negative integration step corresponding to the corresponding negative integration interval, further includes: obtaining a second negative integration step using an interpolation method based on the first negative integration step. Using the interpolation method to obtain the second positive integration step or the second negative integration step can reduce the amount of calculation, thereby shortening the time required to obtain the positive integration step or the negative integration step corresponding to the current average value.

[0038] Step S500 : performing superposition processing according to the current average value and the corresponding positive integration step or negative integration step to obtain a current superposition value.

[0039] In step S500, a method for performing superposition processing based on the current average value and the corresponding positive integration step or negative integration step to obtain the current superposition value includes: Step S510: Integrate the square of the current average value according to the corresponding positive integration step or negative integration step to obtain the current current integral value; Step S520: Obtain a current superposition value based on the current integral value. Specifically, if the current average current value is the initial current average value, the current integral value is used as the current superposition value; if the current average current value is not the initial current average value, the sum of the current superposition value corresponding to the previous current average value and the current integral value is used as the current superposition value.

[0040] Among them, the current integral value obtained according to the positive integration step is a positive number, and the current integral value obtained according to the negative integration step is a negative number. Therefore, when the average value of several currents is greater than the first preset threshold, the corresponding current superposition value will increase, and when the current average value is less than the first preset threshold, the corresponding current superposition value will decrease.

[0041] Figure 4 is a current superposition value curve when collecting DC signals provided by an embodiment of the present invention, Figure 5 This is a curve of the current superposition value when collecting AC signals, provided by an embodiment of the present invention. fuse_int represents the normalized real-time value of the current superposition value, and fuse_latch is a signal indicating whether the fuse protection is currently triggered. 0 indicates that the fuse protection has not been triggered, and 1 indicates that the fuse protection has been triggered.

[0042] Please refer to Figure 4 Before the fuse protection is triggered, the current superposition value gradually increases. After the fuse protection is triggered, the current on the load module decreases, making the corresponding current average value less than the first preset threshold, so that the current integral value is negative, causing the current superposition value to gradually decrease. Similarly, please refer to Figure 5 , since the current flowing through the load module is an AC signal, Figure 5 Different from Figure 4 The difference is that before the fuse protection is triggered, the current superposition value does not increase linearly, but fluctuates around the straight line of linear increase.

[0043] Step S600: When the current superposition value is greater than or equal to a second preset threshold, a fuse signal is output.

[0044] In this embodiment, the second preset threshold TH=F S *T0*S0; where F S The frequency of current acquisition in the conductor of the electronic fuse circuit is used to represent this frequency. T0 represents the time to the fuse start current, and S0 represents the minimum integration step size. In practice, to simplify computational complexity, S0 can be a fixed constant, such as 1.

[0045] In summary, in a fusing control method provided by an embodiment of the present invention, first, the current value signal group in the load module is continuously acquired, and then, the current current average value is obtained based on the current current value signal group. Thereafter, the square of the current current average value is integrated according to the corresponding positive integral step or negative integral step to obtain the current current integral value. Therefore, the corresponding current average value continuously obtained based on the continuously obtained current value signal group is subjected to the same integral processing, so that the fusing control method can adapt to the fusing detection on the fusing curve corresponding to the load module. In addition, since the positive integral step or negative integral step corresponding to the current current average value is obtained based on the comparison result of the current current average value and the first preset threshold value: if the current current average value is greater than the first preset threshold value, the corresponding positive integral step is obtained through the fusing positive integral curve; if the current current average value is less than or equal to the first preset threshold value, the corresponding negative integral step is obtained through the fusing negative integral curve. Therefore, since the step size in the integration processing of the current average value is obtained through the positive integral curve of the fuse and the negative integral curve of the fuse, the fuse control method can be applied to electronic fuse detection of various dynamic signals and has high flexibility. For example, commonly used current signals such as DC signals, AC signals, or pulse width modulated current signals can all be adapted to the fuse control method.

[0046] Furthermore, since after obtaining the first positive integral step corresponding to the corresponding positive integral interval, it also includes: according to the first positive integral step, using the interpolation method to obtain the second positive integral step, or, after obtaining the first negative integral step corresponding to the corresponding negative integral interval, it also includes: according to the first negative integral step, using the interpolation method to obtain the second negative integral step, therefore, using the interpolation method to obtain the second positive integral step or the second negative integral step can reduce the amount of calculation, thereby shortening the time to obtain the positive integral step or the negative integral step corresponding to the current average value.

[0047] Please refer to Figure 6 The embodiment of the present invention further provides an electronic fuse 1 for implementing the above-mentioned fusing control method, comprising: a current acquisition module 11, a fusing control module and a switch control module.

[0048] The current acquisition module 11 is used to acquire the current in the load module 3 and output a current value signal group. The current value signal group includes multiple current values ​​obtained after acquiring the current in the load module 3 multiple times.

[0049] In this embodiment, the current acquisition module 11 includes a current acquisition unit and an analog-to-digital conversion unit. The current acquisition unit is used to acquire the current in the load module 3 and generate a current acquisition signal, which is an analog signal. The analog-to-digital conversion unit is used to convert the current acquisition signal into a current value signal group.

[0050] The fuse control module is configured to obtain a positive integral curve and a negative integral curve for the fuse. The fuse control module is further configured to generate a corresponding second current integral value based on the received current value signal group. Furthermore, the fuse control module outputs a fuse signal when the second current integral value is greater than or equal to a second preset threshold. The fuse control module can be implemented using various forms, such as an application-specific integrated circuit (ASIC) processing unit, a digital signal processor (DSP) program, or microcontroller (MCU) software code.

[0051] The switch control module is used to output a shut-off signal after receiving a fuse signal.

[0052] Please refer to Figure 6 An embodiment of the present invention further provides an electronic circuit, comprising: a shunt resistor R1, the above-mentioned electronic fuse 1, a switch module 2 and a load module 3.

[0053] In this embodiment, one end of the shunt resistor R1 is connected to the power supply voltage EP1, one end of the switch module 2 is coupled to the shunt resistor R1, and the switch module 2 is used to shut down according to the shutdown signal. One end of the load module 3 is connected to the other end of the switch module 2, and the other end of the load module 3 is grounded.

[0054] In this embodiment, the load module 3 is a resistor R2 , and the switch module 2 is an NMOS transistor Q1 .

[0055] An embodiment of the present invention further provides a readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the above-mentioned fuse control method.

[0056] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A fusing control method, characterized in that: The fusing control method is used to control an electronic fuse, wherein the electronic fuse is used to protect a load module. The fusing control method includes: Obtain the positive integral curve and negative integral curve of the fuse; Continuously acquiring a current value signal group in a load module, wherein the current value signal group includes a plurality of current values ​​obtained by collecting currents flowing through the load module within a unit time; Obtain the current average current value according to the current current value signal group; According to the comparison result of the current average current value and the first preset threshold value, a first positive integral step length or a first negative integral step length corresponding to the current average current value is obtained: if the current average current value is greater than the first preset threshold value, the corresponding first positive integral step length is obtained through the fuse positive integral curve; if the current average current value is less than or equal to the first preset threshold value, the corresponding first negative integral step length is obtained through the fuse negative integral curve; Performing a superposition process based on the current average value and the corresponding positive integration step size or negative integration step size to obtain a current superposition value, including: integrating the square of the current average value according to the corresponding positive integration step size or negative integration step size to obtain a current integral value, and if the current average value is the initial current average value, using the current integral value as the current superposition value; if the current average value is not the initial current average value, using the sum of the current superposition value corresponding to the previous current average value and the current integral value as the current superposition value; When the current superposition value is greater than or equal to a second preset threshold, a fuse signal is output.

2. The fusing control method according to claim 1, wherein: The method for obtaining a current average current value according to a current current value signal group includes: performing a root mean square operation on a plurality of current values ​​in the current current value signal group to obtain a current average current value.

3. The fusing control method according to claim 1, wherein: Methods for obtaining the positive integral curve and the negative integral curve of the fuse include: Setting a melting start current value of the electronic fuse and a melting time corresponding to the melting start current; Set the polynomial function; Fitting the fuse positive integral curve according to the polynomial function; The negative integral curve of the melting is obtained according to the positive integral curve of the melting. The negative integral curve of the melting is symmetrical with the positive integral curve of the melting about a first symmetry line. The first symmetry line is parallel to the vertical axis, perpendicular to the horizontal axis and passes through (I0, T0), wherein I0 is used to characterize the melting starting current value, and T0 is used to characterize the melting time corresponding to the melting starting current.

4. The fusing control method according to claim 3, wherein: The first preset threshold is equal to the fusing starting current value.

5. The fusing control method according to claim 3, wherein: The positive integral curve of the blown circuit corresponds to a positive integral lookup table, and the negative integral curve of the blown circuit corresponds to a negative integral lookup table. The method of obtaining the positive integral lookup table and the negative integral lookup table includes: Selecting N points on the positive integral curve of the blown fuse, and dividing the positive integral curve of the blown fuse into N+1 positive integral intervals; Calculating the positive integral lookup table, wherein the positive integral lookup table includes the N+1 positive integral intervals and a first positive integral step corresponding to the N+1 positive integral intervals; Selecting M points on the negative integral curve of the blown circuit to divide the negative integral curve of the blown circuit into M+1 negative integral intervals; The negative integral lookup table is calculated, where the negative integral lookup table includes the M+1 negative integral intervals and a first negative integral step corresponding to the M+1 negative integral intervals.

6. The fusing control method according to claim 5, characterized in that: If the current average current value is greater than a first preset threshold, the method for obtaining a corresponding first positive integral step length through the fuse positive integral curve includes: searching the positive integral interval corresponding to the current average current value in the positive integral lookup table; and searching the positive integral lookup table for a first positive integral step length corresponding to the corresponding positive integral interval based on the found positive integral interval; If the current average current value is less than or equal to a first preset threshold value, the method for obtaining the corresponding first negative integral step length through the fuse negative integral curve includes: searching the negative integral interval corresponding to the current average current value in the negative integral lookup table; based on the found negative integral interval, searching the negative integral lookup table for the first negative integral step length corresponding to the corresponding negative integral interval.

7. The fusing control method according to claim 6, wherein: After obtaining the first positive integration step corresponding to the corresponding positive integration interval, it also includes: according to the first positive integration step, using the interpolation method to obtain the second positive integration step, or, after obtaining the first negative integration step corresponding to the corresponding negative integration interval, it also includes: according to the first negative integration step, using the interpolation method to obtain the second negative integration step.

8. The fusing control method according to claim 1, wherein: The second preset threshold TH=F S *T0*S0; where F S It is used to represent the acquisition frequency of the current value of the conductor in the loop where the electronic fuse is located, T0 is used to represent the fusing time corresponding to the fusing starting current, and S0 is used to represent the minimum value of the integration step.

9. An electronic fuse, characterized in that: A method for implementing the fusing control method according to any one of claims 1 to 8, comprising: a current acquisition module, the current acquisition module being used to acquire the current in the load module and output a current value signal group, the current value signal group including a plurality of current values ​​obtained by acquiring the current values ​​of the conductor in the loop where the electronic fuse is located multiple times; a fusing control module, the fusing control module being configured to obtain a fusing positive integral curve and a fusing negative integral curve, the fusing control module being further configured to generate a corresponding current integral value and a current superposition value based on the received current value signal group, and the fusing control module outputting a fusing signal when the current superposition value is greater than or equal to a second preset threshold value; A switch control module is configured to output a shutoff signal after receiving the fuse signal.

10. The electronic fuse according to claim 9, wherein: The current acquisition module includes: A current acquisition unit, which is used to load the current in the module and generate a current acquisition signal, which is an analog signal; An analog-to-digital conversion unit is used to convert the current acquisition signal into a current value signal group.

11. An electronic circuit, characterized in that: include: A shunt resistor, one end of which is connected to a power supply voltage; The electronic fuse according to claim 9 or 10; a switch module, one end of which is coupled to the shunt resistor, and the switch module is configured to be turned off according to the shutdown signal; A load module, one end of the load module is connected to the other end of the switch module, and the other end of the load module is grounded.

12. A readable storage medium, characterized in that: The readable storage medium stores computer-executable instructions, which are used to implement the fuse control method according to any one of claims 1 to 8 when executed by a processor.

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