A method, device, and storage medium for measuring insulation resistance

Abstract

The application provides a kind of insulation resistance measurement method, device, equipment and storage medium, specifically related to hardware detection technical field.The application obtains stable insulation detection voltage and the time required for insulation detection voltage stability first, obtains stable capacitance value according to stable insulation detection voltage and the time required for insulation detection voltage stability, and measures the resistance value of insulation resistance based on stable capacitance value, without measuring stable insulation detection voltage. In this way, the stable capacitance value is obtained when measuring for the first time, and the resistance value of insulation resistance can be measured without measuring stable insulation detection voltage when measuring again, greatly shortening the period of measuring the resistance value of insulation resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hardware detection, in particular to a method and device for measuring insulation resistance, equipment and storage medium. BACKGROUND

[0002] At present, in the process of detecting the insulation resistance of an electric vehicle, the insulation detection collected voltage is affected by the Y capacitor, which mainly comes from the equivalent capacitor composed of the battery and the tray, the filter capacitor on the BMS, etc. The capacitance is about several nanofarads to several microfarads, and it takes a certain time to stabilize. Therefore, the insulation detection process needs a certain time. The larger the insulation resistance or the Y capacitor, the longer the time required for the insulation detection voltage to stabilize, and the longer the corresponding insulation detection period. If a leakage fault occurs between the high-voltage system of the electric vehicle and the vehicle body, it will seriously endanger the safety of the driver and passengers.

[0003] In the prior art, the resistance value of the insulation resistance needs to be measured every time, and the resistance value of the insulation resistance is calculated according to the stable insulation detection voltage. Since the insulation detection voltage is affected by the capacitor, the capacitor needs a long time to stabilize, and the time required to measure the resistance value of the insulation resistance is also long, resulting in a long period of measuring the resistance value of the insulation resistance.

[0004] In summary, how to shorten the period of measuring the resistance value of the insulation resistance has become a problem that needs to be solved by those skilled in the art. SUMMARY

[0005] The present application provides a method and device for measuring insulation resistance, equipment and storage medium, which aims to shorten the period of measuring the resistance value of the insulation resistance.

[0006] In a first aspect, the present application provides a method for measuring insulation resistance, applied to an insulation resistance detection circuit, the insulation resistance detection circuit comprising an insulation resistance and a capacitor, comprising:

[0007] When measuring the insulation resistance for the i-th time, the i is an integer greater than 1, a first stable capacitance value corresponding to the insulation resistance detection circuit is obtained, the first stable capacitance value being generated under the condition that the voltage corresponding to the insulation resistance detection circuit is in a stable state when measuring the insulation resistance for the first time;

[0008] A first stable voltage value corresponding to the insulation resistance detection circuit is predicted according to the first stable capacitance value;

[0009] The resistance value of the insulation resistance is measured according to the first stable voltage value.

[0010] Optionally, the method further comprises:

[0011] When measuring the insulation resistance for the first time, the insulation resistance detection circuit is powered on. In response to the voltage change rate of the insulation resistance detection circuit being lower than the preset change rate, it is determined that the voltage value of the insulation resistance detection circuit is in a stable state.

[0012] The second stable voltage value corresponding to the insulation resistance detection circuit in a stable state and the first time required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state are obtained.

[0013] The first stable capacitance value corresponding to the insulation resistance detection circuit is generated based on the first duration and the second stable voltage value.

[0014] Optionally, after generating the first stable capacitance value corresponding to the insulation resistance detection circuit based on the first duration and the second stable voltage value, the method further includes:

[0015] The insulation resistance is measured based on the second stable voltage value.

[0016] Optionally, the method further includes:

[0017] During the i-th insulation resistance measurement, the insulation resistance detection circuit is powered on again, and the voltage change rate of the insulation resistance detection circuit is calculated in real time. Based on the voltage change rate of the insulation resistance detection circuit, the time required for the insulation resistance detection circuit to reach a stable state is predicted, and the second duration is obtained.

[0018] The step of predicting the first stable voltage value corresponding to the insulation resistance detection circuit based on the first stable capacitance value includes:

[0019] The first stable voltage value corresponding to the insulation resistance detection circuit is predicted based on the second duration and the first stable capacitance value.

[0020] Optionally, after obtaining the first stable capacitance value corresponding to the insulation resistance detection circuit, the method further includes:

[0021] If the operating mode of the system in which the insulation resistance detection circuit is located has not changed, then the step of predicting the first stable voltage value corresponding to the insulation resistance detection circuit based on the first stable capacitor value is executed.

[0022] If the operating mode of the system containing the insulation resistance detection circuit changes, the insulation resistance detection circuit is powered on again. In response to the voltage change rate corresponding to the insulation resistance detection circuit being lower than a preset change rate, it is determined that the voltage value corresponding to the insulation resistance detection circuit is in a stable state. The third stable voltage value corresponding to the insulation resistance detection circuit in a stable state and the third time required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state are obtained. The second stable capacitance value corresponding to the insulation resistance detection circuit is generated based on the third time and the third stable voltage. The second stable capacitance value is obtained for the i-th measurement of the insulation resistance.

[0023] Secondly, this application provides an insulation resistance measuring device, the device comprising: a first acquisition module, configured to acquire a first stable capacitance value corresponding to the insulation resistance detection circuit during the i-th insulation resistance measurement, wherein i is an integer greater than 1, the first stable capacitance value being generated during the first insulation resistance measurement under the condition that the voltage corresponding to the insulation resistance detection circuit is in a stable state;

[0024] The first prediction module is used to predict the first stable voltage value corresponding to the insulation resistance detection circuit based on the first stable capacitor value.

[0025] The measurement module is used to measure the resistance value of the insulation resistance based on the first stable voltage value.

[0026] Optionally, the device further includes:

[0027] The determination module is used to power on the insulation resistance detection circuit during the first insulation resistance measurement, and determine that the voltage value corresponding to the insulation resistance detection circuit is in a stable state in response to the fact that the rate of change of the voltage value corresponding to the insulation resistance detection circuit is lower than a preset rate of change.

[0028] The second acquisition module acquires the second stable voltage value corresponding to the insulation resistance detection circuit in a stable state and the first time required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state.

[0029] A generation module is used to measure the resistance value of the insulation resistance based on the first stable voltage value.

[0030] Optionally, the measurement module is further configured to measure the resistance value of the insulation resistance based on the first stable voltage value.

[0031] Thirdly, this application provides a computer device including a memory and a processor, the memory for storing instructions or code, and the processor for executing the instructions or code to cause the device to perform the insulation resistance measurement method described in any of the first aspects above.

[0032] In a fourth aspect, the present application provides a computer storage medium, wherein a code is stored in the computer storage medium, and when the code is executed, an apparatus executing the code implements the insulation resistance measurement method according to any one of the first aspect. The present application provides an insulation resistance measurement method. In the execution of the method, a first stable capacitance value corresponding to an insulation resistance detection circuit is acquired, wherein the first stable capacitance value is generated under the condition that a voltage corresponding to the insulation resistance detection circuit is in a stable state in the first measurement of the insulation resistance, then a first stable voltage value corresponding to the insulation resistance detection circuit is predicted according to the first stable capacitance value, and finally the resistance value of the insulation resistance is measured according to the first stable voltage value. In this way, the stable insulation detection voltage and the time required for the insulation detection voltage to be stable are acquired first, the stable capacitance value is obtained according to the stable insulation detection voltage and the time required for the insulation detection voltage to be stable, and the resistance value of the insulation resistance can be measured without measuring the stable insulation detection voltage based on the stable capacitance value, that is, the stable capacitance value is acquired in the first measurement, and the resistance value of the insulation resistance can be measured without measuring the stable insulation detection voltage in the second measurement. In this way, the period of measuring the resistance value of the insulation resistance can be greatly shortened. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 A method flow chart of the insulation resistance measurement method provided by the embodiments of the present application;

[0035] Figure 2 A structural schematic diagram of the insulation resistance measurement device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. The insulation resistance measurement method and device provided by the present application are used in the field of hardware detection technology. The above is only an example, and does not limit the application field of the method and device provided by the present application.

[0037] At present, in the process of detecting the insulation resistance of an electric vehicle, the insulation detection collection voltage is affected by the Y capacitor, which mainly comes from the equivalent capacitor composed of the battery and the tray, the filter capacitor on the BMS, etc. The capacitance is about several nanofarads to several microfarads, and it takes a certain time to stabilize. Therefore, the insulation detection process needs a certain time. The larger the insulation resistance or the Y capacitor, the longer the time required for the insulation detection voltage to stabilize, and the longer the corresponding insulation detection period. If a leakage fault occurs between the high-voltage system of the electric vehicle and the vehicle body, it will seriously endanger the safety of the driver and passengers.

[0038] In the prior art, the resistance value of the insulation resistance needs to be measured each time, and the resistance value of the insulation resistance is calculated according to the stable insulation detection voltage. Since the insulation detection voltage is affected by the capacitor, the capacitor needs a long time to stabilize, and the time required to measure the resistance value of the insulation resistance is also long, resulting in a long period for measuring the resistance value of the insulation resistance.

[0039] The inventor proposes the technical solution of the present application after research, which first acquires a stable insulation detection voltage and the time required for the insulation detection voltage to stabilize, obtains a stable capacitance value according to the stable insulation detection voltage and the time required for the insulation detection voltage to stabilize, and measures the resistance value of the insulation resistance based on the stable capacitance value without measuring the stable insulation detection voltage. That is, the stable capacitance value is acquired when measuring for the first time, and the resistance value of the insulation resistance can be measured without measuring the stable insulation detection voltage when measuring for the second time. In this way, the period for measuring the resistance value of the insulation resistance can be greatly shortened.

[0040] Referring to Figure 1 , Figure 1 A method flowchart of a method for measuring an insulation resistance provided by an embodiment of the present application is applied to an insulation resistance detection circuit, wherein the insulation resistance detection circuit includes an insulation resistance and a capacitor, and includes the following steps.

[0041] S101: When measuring the insulation resistance for the i-th time, a first stable capacitance value corresponding to the insulation resistance detection circuit is acquired.

[0042] When measuring the insulation resistance for the i-th time, wherein i is an integer greater than 1, a first stable capacitance value corresponding to the insulation resistance detection circuit is acquired, wherein the first stable capacitance value is generated under the condition that the voltage corresponding to the insulation resistance detection circuit is in a stable state when measuring the insulation resistance for the first time.

[0043] Specifically, the specific process of generating the first stable capacitance value under the condition that the voltage corresponding to the insulation resistance detection circuit is in a stable state when measuring the insulation resistance for the first time is as follows: power on the insulation resistance detection circuit, in response to the voltage value change rate corresponding to the insulation resistance detection circuit being lower than a preset change rate, generally, the change rate is less than 0.7%, so the preset change rate can be set to 0.7%, when the change rate is less than 0.7%, it is determined that the voltage value corresponding to the insulation resistance detection circuit is in a stable state. Real-time calculation of the voltage value change rate corresponding to the insulation resistance detection circuit, when the voltage value change rate is less than the preset change rate, it is determined that the voltage value corresponding to the insulation resistance detection circuit is in a stable state. Obtain the second stable voltage value corresponding to the insulation resistance detection circuit in a stable state and the first time length required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state; generate the first stable capacitance value corresponding to the insulation resistance detection circuit according to the first time length and the second stable voltage value.

[0044] After obtaining the second stable voltage value corresponding to the insulation resistance detection circuit in a stable state, the resistance value of the insulation resistance is measured according to the second stable voltage value, and the first measurement of the insulation resistance is realized.

[0045] S102: predicting the first stable voltage value corresponding to the insulation resistance detection circuit according to the first stable capacitance value.

[0046] When measuring the insulation resistance for the i-th time, the insulation resistance detection circuit is powered on again, the voltage value change rate of the insulation resistance detection circuit is calculated in real time, the time required for the insulation resistance detection circuit to reach a stable state is predicted according to the voltage value change rate of the insulation resistance detection circuit, and the second time length is obtained. The specific description is that the second time length is the predicted time required for the insulation resistance detection circuit to reach a stable state, which is not actually measured. The predicted second time length can greatly reduce the time required for measuring the insulation resistance. The first stable voltage value corresponding to the insulation resistance detection circuit is predicted according to the second time length and the first stable capacitance value obtained before, the prediction result is accurate, and the time required for prediction is less.

[0047] S103: measuring the resistance value of the insulation resistance according to the first stable voltage value.

[0048] The resistance value of the insulation resistance is generated according to the stable voltage value, and the resistance value of the insulation resistance can be accurately and quickly measured according to the first stable voltage value predicted.

[0049] The embodiment of the present application provides a kind of insulation resistance measurement method.In executing the method, first, the first stable capacitance value corresponding to insulation resistance detection circuit is acquired, wherein the first stable capacitance value is generated when the voltage corresponding to the insulation resistance detection circuit is in stable state during the first time measurement of insulation resistance, then the first stable voltage value corresponding to insulation resistance detection circuit is predicted according to the first stable capacitance value, and finally the resistance value of the insulation resistance is measured according to the first stable voltage value.In this way, the stable insulation detection voltage and the time required for the stable insulation detection voltage are acquired first, the stable capacitance value is obtained according to the stable insulation detection voltage and the time required for the stable insulation detection voltage, and the resistance value of the insulation resistance can be measured based on the stable capacitance value without measuring the stable insulation detection voltage, i.e., the stable capacitance value is acquired during the first measurement, and the resistance value of the insulation resistance can be measured without measuring the stable insulation detection voltage during the second measurement.Therefore, the period of measuring the resistance value of the insulation resistance can be greatly shortened.

[0050] Based on the above introduction, the technical scheme provided by the embodiment of the present application can further judge whether the first stable capacitance value can be used to measure the resistance value of the insulation resistance before the i-th time measurement of the resistance value of the insulation resistance, to avoid incorrect measurement.

[0051] Specifically, if the working mode of the system where the insulation resistance detection circuit is located has not changed, the step of predicting the first stable voltage value corresponding to the insulation resistance detection circuit according to the first stable capacitance value is performed, i.e., the S102 step is performed;if the working mode of the system where the insulation resistance detection circuit is located has changed, the insulation resistance detection circuit is powered on again, and the voltage value corresponding to the insulation resistance detection circuit is determined to be in a stable state in response to the voltage value corresponding to the insulation resistance detection circuit changing at a rate lower than a preset rate;the third stable voltage value corresponding to the insulation resistance detection circuit in a stable state and the third time length required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state are acquired;the second stable capacitance value corresponding to the insulation resistance detection circuit is generated according to the third time length and the third stable voltage;and the second stable capacitance value is used to measure the resistance value of the insulation resistance for the i-th time.

[0052] The difference between the present specific implementation and the above specific implementation is that the first stable capacitance value is judged whether it can be used to measure the resistance value of the insulation resistance before the i-th time measurement of the resistance value of the insulation resistance, which avoids incorrect measurement of the resistance value of the insulation resistance.

[0053] The above is some specific implementation modes of the insulation resistance measurement method provided by the embodiment of the present application, and based on this, the present application further provides a corresponding device.The device provided by the embodiment of the present application will be introduced from the perspective of functional modularization.

[0054] Reference is made to Figure 2A structural schematic diagram of a measuring device 200 of an insulation resistance is shown, the device 200 comprising:

[0055] A first obtaining module 210 is configured to obtain a first stable capacitance value corresponding to the insulation resistance detection circuit when the insulation resistance is measured for the i-th time, where i is an integer greater than 1, and the first stable capacitance value is generated under the condition that the voltage corresponding to the insulation resistance detection circuit is in a stable state when the insulation resistance is measured for the first time.

[0056] A first predicting module 220 is configured to predict a first stable voltage value corresponding to the insulation resistance detection circuit according to the first stable capacitance value.

[0057] A measuring module 230 is configured to measure the resistance value of the insulation resistance according to the first stable voltage value.

[0058] Optionally, the device 200 further comprises:

[0059] A determining module is configured to power on the insulation resistance detection circuit when the insulation resistance is measured for the first time, and determine that the voltage value corresponding to the insulation resistance detection circuit is in a stable state in response to the rate of change of the voltage value corresponding to the insulation resistance detection circuit being lower than a preset rate of change.

[0060] A second obtaining module is configured to obtain a second stable voltage value corresponding to the insulation resistance detection circuit in a stable state and a first time length required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state.

[0061] A generating module is configured to generate a first stable capacitance value corresponding to the insulation resistance detection circuit according to the first time length and the second stable voltage value.

[0062] Optionally, the measuring module 230 is further configured to measure the resistance value of the insulation resistance according to the second stable voltage value.

[0063] Optionally, the device 200 further comprises:

[0064] A second predicting module is configured to power on the insulation resistance detection circuit again when the insulation resistance is measured for the i-th time, calculate the rate of change of the voltage value of the insulation resistance detection circuit in real time, predict the time required for the insulation resistance detection circuit to reach a stable state according to the rate of change of the voltage value of the insulation resistance detection circuit, and obtain a second time length.

[0065] The first predicting module 220 is specifically configured to predict a first stable voltage value corresponding to the insulation resistance detection circuit according to the second time length and the first stable capacitance value.

[0066] Optionally, the device 200 further comprises:

[0067] The execution module is configured to, if the working mode of the system in which the insulation resistance detection circuit is located does not change, execute the step of predicting the first stable voltage value corresponding to the insulation resistance detection circuit according to the first stable capacitance value.

[0068] The execution module is further configured to, if the working mode of the system in which the insulation resistance detection circuit is located changes, re-power on the insulation resistance detection circuit, determine that the voltage value corresponding to the insulation resistance detection circuit is in a stable state in response to the voltage value corresponding to the insulation resistance detection circuit being lower than a preset change rate, obtain a third stable voltage value corresponding to the insulation resistance detection circuit in the stable state and a third time length required for the voltage value corresponding to the insulation resistance detection circuit to reach the stable state, generate a second stable capacitance value corresponding to the insulation resistance detection circuit according to the third time length and the third stable voltage, and obtain the second stable capacitance value for measuring the resistance value of the insulation resistance for the i-th time.

[0069] The embodiments of the present application further provide a corresponding device and a computer storage medium for implementing the schemes provided by the embodiments of the present application.

[0070] The device includes a memory and a processor, the memory is configured to store instructions or codes, and the processor is configured to execute the instructions or codes to enable the device to execute the method provided by any of the embodiments of the present application.

[0071] The computer storage medium stores codes, and when the codes are executed, the device executing the codes implements the method provided by any of the embodiments of the present application.

[0072] From the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the above-mentioned embodiment methods can be implemented by means of software plus a general hardware platform. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product. The computer software product can be stored in a storage medium, such as a read-only memory (English: read-only memory, ROM) / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device to execute the method described in the various embodiments or some parts of the embodiments of the present application.

[0073] It should be noted that, in the specification, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0074] It should also be noted that each of the embodiments described in the specification illustrate aspects of the application and are not meant to be an exhaustive list of all possible embodiments. Furthermore, the specification includes various aspects as set forth in the claims below and equivalents thereof, and it is the intent of the inventor to encompass all such aspects and equivalents. Moreover, no element, component, or method step in the present disclosure is intended to be dedicated or activated to any specific use unless required by the claims. In addition, it should be understood that every aspect of the application can include any specific feature, structure, or combination thereof disclosed herein. In addition, any one or more features of any embodiment of the application can be combined with any one or more other features from the same or another embodiment or embodiments, and the application has not necessarily been described in its simplest form.

[0075] The above description is only a specific implementation of the present application. The protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed by the present application can be easily thought of by those skilled in the art without creative effort, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for measuring insulation resistance, characterized in that, Applied to an insulation resistance detection circuit, the insulation resistance detection circuit comprising insulation resistance and capacitance, the method includes: During the i-th measurement of insulation resistance, where i is an integer greater than 1, the first stable capacitance value corresponding to the insulation resistance detection circuit is obtained. The first stable capacitance value is generated during the first measurement of insulation resistance under the condition that the voltage corresponding to the insulation resistance detection circuit is in a stable state. Predict the first stable voltage value corresponding to the insulation resistance detection circuit based on the first stable capacitance value; The resistance value of the insulation resistance is measured based on the first stable voltage value; The method further includes: during the i-th measurement of insulation resistance, re-energizing the insulation resistance detection circuit, calculating the voltage change rate of the insulation resistance detection circuit in real time, and predicting the time required for the insulation resistance detection circuit to reach a stable state based on the voltage change rate of the insulation resistance detection circuit, thereby obtaining a second duration; The step of predicting the first stable voltage value corresponding to the insulation resistance detection circuit based on the first stable capacitance value includes: The first stable voltage value corresponding to the insulation resistance detection circuit is predicted based on the second duration and the first stable capacitance value.

2. The method according to claim 1, characterized in that, The method further includes: When measuring the insulation resistance for the first time, the insulation resistance detection circuit is powered on. In response to the voltage change rate of the insulation resistance detection circuit being lower than the preset change rate, it is determined that the voltage value of the insulation resistance detection circuit is in a stable state. The second stable voltage value corresponding to the insulation resistance detection circuit in a stable state and the first time required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state are obtained. The first stable capacitance value corresponding to the insulation resistance detection circuit is generated based on the first duration and the second stable voltage value.

3. The method according to claim 2, characterized in that, After generating the first stable capacitance value corresponding to the insulation resistance detection circuit based on the first duration and the second stable voltage value, the method further includes: The insulation resistance is measured based on the second stable voltage value.

4. The method according to claim 1, characterized in that, After obtaining the first stable capacitance value corresponding to the insulation resistance detection circuit, the method further includes: If the operating mode of the system in which the insulation resistance detection circuit is located has not changed, then the step of predicting the first stable voltage value corresponding to the insulation resistance detection circuit based on the first stable capacitor value is executed. If the operating mode of the system containing the insulation resistance detection circuit changes, the insulation resistance detection circuit is powered on again. In response to the voltage change rate corresponding to the insulation resistance detection circuit being lower than a preset change rate, it is determined that the voltage value corresponding to the insulation resistance detection circuit is in a stable state. The third stable voltage value corresponding to the insulation resistance detection circuit in a stable state and the third time required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state are obtained. A second stable capacitance value corresponding to the insulation resistance detection circuit is generated based on the third time and the third stable voltage. The second stable capacitance value is then used for the resistance value in the i-th measurement of the insulation resistance.

5. A device for measuring insulation resistance, characterized in that, The device includes: The first acquisition module is used to acquire the first stable capacitance value corresponding to the insulation resistance detection circuit when the insulation resistance is measured for the i-th time, where i is an integer greater than 1. The first stable capacitance value is generated when the voltage corresponding to the insulation resistance detection circuit is in a stable state during the first measurement of insulation resistance. The first prediction module is used to predict the first stable voltage value corresponding to the insulation resistance detection circuit based on the first stable capacitor value. A measurement module is used to measure the resistance value of the insulation resistance based on the first stable voltage value; The device further includes: a second prediction module, used to power on the insulation resistance detection circuit again when measuring the insulation resistance for the i-th time, calculate the voltage change rate of the insulation resistance detection circuit in real time, and predict the time required for the insulation resistance detection circuit to reach a stable state based on the voltage change rate of the insulation resistance detection circuit, thereby obtaining a second duration; The first prediction module is specifically used to predict the first stable voltage value corresponding to the insulation resistance detection circuit based on the second duration and the first stable capacitor value.

6. The apparatus according to claim 5, characterized in that, The device further includes: The determination module is used to power on the insulation resistance detection circuit during the first insulation resistance measurement, and determine that the voltage value corresponding to the insulation resistance detection circuit is in a stable state in response to the fact that the rate of change of the voltage value corresponding to the insulation resistance detection circuit is lower than a preset rate of change. The second acquisition module acquires the second stable voltage value corresponding to the insulation resistance detection circuit in a stable state and the first time required for the voltage value corresponding to the insulation resistance detection circuit to reach a stable state. The generation module is used to generate a first stable capacitance value corresponding to the insulation resistance detection circuit based on the first duration and the second stable voltage value.

7. The apparatus according to claim 6, characterized in that, The measurement module is also used to measure the resistance value of the insulation resistance based on the second stable voltage value.

8. A computer device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method for measuring insulation resistance as described in any one of claims 1-4.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a terminal device, cause the terminal device to perform the insulation resistance measurement method as described in any one of claims 1-4.

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