CN114689938A - Method and device for reporting insulation resistance of automobiles and automobiles having the same - Google Patents

Abstract

The present application discloses a method and device for reporting insulation resistance of an automobile, and an automobile having the same, wherein the method includes: detecting the actual value of the insulation resistance of the automobile; matching the current resistance interval where the actual value is located according to the actual value; Calculate the reported value of automotive insulation resistance and report the reported value. The method for reporting the insulation resistance of an automobile in the embodiment of the present application can ensure the safety of the high voltage of the whole vehicle, and at the same time reduce the false triggering or non-identification caused by the objective existence of the detection accuracy of the insulation resistance.

Description

Method and device for reporting insulation resistance of automobiles, and automobiles having the same

technical field

The present application relates to the technical field of automobiles, and in particular, to a method and device for reporting insulation resistance of automobiles and an automobile having the same.

Background technique

With the increasing development of new energy vehicles, the high-voltage electrical safety performance of new energy vehicles has attracted more and more attention from car companies and users. Specifically, under the maximum working voltage, the insulation resistance of the DC circuit should not be less than 100Ω/V, and the AC circuit should not be less than 500Ω/V. If the DC and AC B-level voltage circuits are conductively connected together, the insulation resistance should be satisfied. The resistance is not less than 500Ω/V requirement.

Due to the objective existence of the actual insulation detection accuracy, when the current insulation resistance is low, especially when the insulation resistance is between triggering and non-triggering, it may cause the occurrence of unidentified insulation risks.

However, in the related art, in the case of a critical resistance value, a certain sampling point is generally used as the basis for triggering an insulation fault; or, in order to increase the insulation alarm threshold of the vehicle demand, when the insulation performance of the vehicle has a downward trend, The insulation alarm is triggered, resulting in false triggering or unrecognized situations. The accuracy rate is low and needs to be solved urgently.

Application content

The present application provides a method and device for reporting insulation resistance of an automobile, and an automobile having the same, so as to reduce false triggering or non-identification caused by the objective existence of insulation resistance detection accuracy.

The embodiment of the first aspect of the present application provides a method for reporting insulation resistance of automobiles, comprising the following steps:

Detect the actual value of automobile insulation resistance;

matching the current resistance interval in which the actual value is located according to the actual value; and

Calculate the reported value of the automobile insulation resistance according to the current resistance interval, and report the reported value.

Optionally, the reporting of the reported value includes:

Determine the reporting method of the reported value according to the current resistance interval, and the reporting method includes real-time reporting and delayed reporting;

The reported value is reported based on the reporting method.

Optionally, when the reporting method is the delayed reporting, the reporting the reported value based on the reporting method includes:

Determine the reporting period according to the current resistance interval;

Obtain the current actual value of the automobile insulation resistance and the actual value at other times in the reporting period;

The reported value is determined according to the current actual value and the actual value at other times in the reporting period and the corresponding current resistance interval, respectively, and the reported value is reported according to the reporting period.

Optionally, the priority of the delayed reporting is higher than the priority of the real-time reporting.

Optionally, determining the reported value according to the current actual value and the actual value at other times in the reporting period and its corresponding current resistance interval, including:

Determine the current resistance interval to which the current actual value of each sampling point matches

The current sampling type is obtained according to the current resistance interval of each sampling point, and the reported value is calculated according to the current sampling type.

A second aspect of the present application provides a device for reporting insulation resistance of automobiles, including:

Detection module, used to detect the actual value of automobile insulation resistance;

a matching module, configured to match the current resistance interval in which the actual value is located according to the actual value; and

A reporting module, configured to calculate the reported value of the automobile insulation resistance according to the current resistance interval, and report the reported value.

Optionally, the reporting module includes:

a determining unit, configured to determine a reporting mode of the reported value according to the current resistance interval, where the reporting mode includes real-time reporting and delayed reporting;

A reporting unit, configured to report the reported value based on the reporting method.

Optionally, when the reporting method is the delayed reporting, the reporting unit includes:

Determine the reporting period according to the current resistance interval;

Obtain the current actual value of the automobile insulation resistance and the actual value at other times in the reporting period;

The reported value is determined according to the current actual value and the actual value at other times in the reporting period and the corresponding current resistance interval, respectively, and the reported value is reported according to the reporting period.

Optionally, the priority of the delayed reporting is higher than the priority of the real-time reporting.

Optionally, the reporting unit further includes:

Determine the current resistance interval to which the current actual value of each sampling point matches

The current sampling type is obtained according to the current resistance interval of each sampling point, and the reported value is calculated according to the current sampling type. An embodiment of a third aspect of the present application provides an automobile, which includes the above-mentioned device for reporting the insulation resistance of the automobile.

In this way, the actual value of the insulation resistance of the automobile can be detected, and the current resistance range where the actual value is located can be matched according to the actual value, and the reported value of the insulation resistance of the automobile can be calculated according to the current resistance range, and the reported value can be reported to ensure the high-voltage safety of the whole vehicle. At the same time, the situation of false triggering or non-identification caused by the objective existence of insulation resistance detection accuracy is reduced.

Additional aspects and advantages of the present application will be set forth, in part, in the following description, and in part will be apparent from the following description, or learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is an example diagram of an insulation resistance detection circuit in the related art;

Fig. 2 is a kind of reporting method of automobile insulation resistance provided according to the embodiment of the present application;

3 is an exemplary block diagram of a device for reporting insulation resistance of an automobile according to an embodiment of the present application;

FIG. 4 is an exemplary block diagram of an automobile according to an embodiment of the present application.

Detailed ways

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application.

The method and device for reporting insulation resistance of an automobile according to the embodiments of the present application and the automobile having the same are described below with reference to the accompanying drawings.

Before introducing the method for reporting the insulation resistance of an automobile according to the embodiment of the present application, the design of the insulation detection circuit in the related art is briefly introduced.

Under normal circumstances, OEMs will put forward a detection accuracy requirement for the supplier's battery management system (Battery Management System, BMS), such as ±20%. According to this requirement, the battery pack BMS supplier will design its own insulation detection hardware circuit , as shown in Figure 1, and once the hardware circuit design is completed, the ability of its detection accuracy is basically determined, for example, the fluctuation within the accuracy range of ±20% meets the requirements, while the fluctuation within the range of ±20% is up and down Volatility has a certain randomness.

Due to the objective existence of the actual insulation detection accuracy, when the current insulation resistance is low, especially when the insulation resistance is between triggering and non-triggering, it may cause the occurrence of unidentified insulation risks; for example, according to regulations, the insulation resistance of the whole vehicle The value is not lower than the requirement of 500Ω/V, and the vehicle is calculated according to the maximum working voltage of 500V, then the minimum insulation resistance value R0 required by the vehicle is ≥250KΩ;

At this time, if the actual vehicle passes through the insulation resistance detection circuit, the measured insulation resistance R1 at a certain sampling point is 280KΩ (>250KΩ), and the insulation fault alarm will not be triggered at this time; at the same time, the reported value R2 (=R1) has already considered the circuit The sampling accuracy error;

If the value has gone to the upper deviation (eg: 20%), then the theoretical actual insulation resistance R3 at a certain sampling point is 280/120% = 233KΩ (<250KΩ); it will trigger the actual damage to the human body. Insulation failure alarm, no risk identified.

Therefore, in the case of a critical resistance value, simply using a certain sampling point as the basis for triggering an insulation fault may lead to unidentified insulation faults. This situation is very dangerous and should be minimized.

In view of the false triggering or non-recognition caused by the objective existence of the insulation resistance detection accuracy mentioned by the above-mentioned background technology center, the present application provides a reporting method for automobile insulation resistance, in which the automobile insulation resistance can be detected. According to the actual value, match the current resistance interval where the actual value is located, and calculate the reported value of automobile insulation resistance according to the current resistance interval, and report the reported value, which ensures the high voltage safety of the vehicle and reduces the insulation resistance caused by False triggering or unrecognized situations caused by the objective existence of detection accuracy.

Specifically, FIG. 2 is a schematic flowchart of a method for reporting insulation resistance of an automobile according to an embodiment of the present application.

As shown in Figure 2, the reporting method of the automobile insulation resistance includes the following steps:

In step S201, the actual value of the insulation resistance of the automobile is detected.

It can be understood that, when detecting the actual value of the insulation resistance of the automobile, the detection method in the related art may be adopted, which is not specifically limited here.

In step S202, the current resistance interval in which the actual value is located is matched according to the actual value.

It can be understood that, since the automotive insulation resistance R0 ≥ 250KΩ, and the precision range of the insulation resistance is [-20%, 20%], the embodiment of the present application can be divided into four resistance intervals: [0, 1*R0) , [1*R0, 1.5*R0], (1.5*R0, 5*R0], (5*R0, +∞].

Thus, the current resistance interval in which the actual value of the automobile insulation resistance detected in step S201 is located can be determined. For example, if the actual value of the automobile insulation resistance is 1.2*R0, the current resistance interval in which it is located is [1* R0, 1.5*R0]; if the actual value of the insulation resistance of the automobile is 2*R0, the current resistance range is (1.5*R0, 5*R0].

In step S203, the reported value of the insulation resistance of the automobile is calculated according to the current resistance interval, and the reported value is reported.

Among them, it is assumed that the actual value of the automobile insulation resistance is R1, and the reported value of the automobile insulation resistance is R2.

It can be understood that, when calculating the reported value of the insulation resistance of the automobile, the embodiment of the present application can select an increase coefficient according to the resistance interval, such as 2/3, 4/5, 5/6, 1, and take the minimum value Min, take The intermediate value MID, etc., for example, in the interval (1.5*R0, 5*R0], the increase coefficient can be selected as 5/6, then R2=(5/6)*R1; in the interval (5*R0, +∞] , the increase coefficient can be selected as 1, then R2=1*R1.

It should be noted that the increase coefficient can be selected under the premise of considering the detection accuracy, so that the reported value can be as close to the actual value as possible to avoid the occurrence of unidentified insulation risks.

Optionally, in some embodiments, reporting the reported value includes: determining a reporting method of the reported value according to the current resistance interval, where the reporting method includes real-time reporting and delayed reporting; and reporting the reported value based on the reporting method.

Specifically, when the actual value of the insulation resistance of the automobile is in the interval (5*R0, +∞], R2=1*R1, the embodiment of the present application can report it to the CAN (Controller Area Network, the controller area network) in real time according to each sampling point cycle When the actual value of the insulation resistance of the automobile is in the interval (1.5*R0, 5*R0], R2=(5/6)*R1, the embodiment of the present application can be reported to the real-time according to each sampling point cycle. CAN bus.

Optionally, in some embodiments, when the reporting method is delayed reporting, reporting the reported value based on the reporting method, including: determining the reporting period according to the current resistance interval; obtaining the current actual value of the insulation resistance of the automobile and the reporting period Actual value at other times; determine the reported value according to the current actual value and the actual value at other times in the reporting period and its corresponding current resistance interval, and report the reported value according to the reporting period.

Further, in some embodiments, determining the reported value according to the current actual value and the actual value at other times in the reporting period and its corresponding current resistance interval respectively includes: determining the location where the current actual value of each sampling point matches. Current resistance interval; the current sampling type is obtained according to the current resistance interval of each sampling point, and the reported value is calculated according to the current sampling type.

Specifically, when the actual value of the insulation resistance of the automobile is in the interval [1*R0, 1.5*R0], the embodiment of the present application may use three time points as a reporting period, and after the third time point ends, the period of The insulation resistance value R1 is reported to the CAN bus of the vehicle, in the form of delayed reporting to the bus.

Since the current actual value of the automobile insulation resistance obtained and the actual value at other times in the reporting period are not necessarily in the same interval, it is assumed that the actual values of the automobile insulation resistance at three times are obtained in one reporting period, and they are named as R1 ₁ , R1 ₂ , R1 ₃ , and different cases will be described in detail below.

(1) When at least two of the actual values of the automotive insulation resistance at the three times are in the interval [1*R0, 1.5*R0], then R2 can take 4 of the minimum value of the actual value among the three times. /5 times, namely: R2=(4/5)*Min(R1 ₁ , R1 ₂ , R1 ₃ );

(2) When only one of the actual values of the automotive insulation resistance at three moments is in the interval [1*R0, 1.5*R0], it can be divided into the following three situations:

①. When the other two actual values are in the interval [0, 1*R0), R2 can take the minimum value, namely: R2=Min(R1 ₁ , R1 ₂ , R1 ₃ );

②. When the other two actual values are in the interval (1.5*R0, +∞), R2 can take the middle value, namely: R2=MID(R1 ₁ , R1 ₂ , R1 ₃ );

③. When the other two actual values are respectively in [0, 1*R0) and (1.5*R0, +∞), R2 can take the minimum value, namely: R2=Min(R1 ₁ , R1 ₂ , R1 ₃ ).

For example, assuming that the current actual value of the automobile insulation resistance at a certain moment is 280KΩ, the reporting method of delayed reporting is adopted. 375KΩ), then the reported value R2=(4/5)*Min(R1 ₁ , R1 ₂ , R1 ₃ )=224KΩ (<250KΩ), then the insulation alarm fault will be triggered, and there will be no unrecognized actual situation in the case. Risk situation; and so on, including the following minimum value Min, etc., will make the reported value closer to the actual value and identify risks.

It should be noted that, in the formula of taking the intermediate value MID, the embodiment of the present application can perform numerical comparison and identification of insulation faults in one reporting period (3 sampling points), eliminate possible single-point erroneous collection, and eliminate the The resulting false triggering of an insulation fault alarm.

Further, when the actual value of the automobile insulation resistance is in the interval [0, 1*R0), the embodiment of the present application can also use three time points as a reporting cycle, and after the third time point ends, the insulation of the cycle is completed. The resistance value R1 is reported to the CAN bus of the vehicle, in the form of delayed reporting of the bus.

Assuming that the actual values of the automobile insulation resistance at three moments are obtained in one reporting period, which are named as R1 ₄ , R1 ₅ , and R1 ₆ respectively, and different situations will be described in detail below.

(1) When one of the actual values of the automotive insulation resistance at three times is in the interval [0, 1*R0):

①. When the other two actual values are in the interval [1*R0, 1.5*R0], R2 can take 4/5 times of the minimum value, namely: R2=(4/5)*Min(R1 ₄ , R1 ₅ , R1 ₆ );

②. When the other two actual values are in the interval (1.5*R0, +∞), R2 can take the intermediate value, namely: R2=MID(R1 ₄ , R1 ₅ , R1 ₆ );

③. When the other two actual values are respectively in [1*R0, 1.5*R0] and (1.5*R0, +∞), R2 can take the minimum value, namely: R2=Min(R1 ₄ , R1 ₅ , R1 ₆ ).

(2) When two of the actual values of the automobile insulation resistance at the three times are in the interval [0, 1*R0), R2 takes the minimum value, namely: R2=Min(R1 ₄ , R1 ₅ , R1 ₆ );

(3) When the actual values of the automobile insulation resistance at three times are in the interval [0, 1*R0), R2=(2/3)*Min(R1 ₄ , R1 ₅ , R1 ₆ ).

Optionally, in some embodiments, the priority of delayed reporting is higher than that of real-time reporting.

For example, assuming that the current actual value of the automobile insulation resistance at a certain moment is 280KΩ (>250KΩ), that is to say, the current actual value of the automobile insulation resistance at this moment is in the interval [1*R0, 1.5*R0], then you can Obtain the current actual value of automobile insulation resistance and the actual value at other times in the reporting period, and determine the reported value according to the current actual value and the actual value at other times in the reporting period and their corresponding current resistance range, and report the reported value according to the reporting period .

That is to say, when the reporting method is delayed reporting, even if the range of the current actual value of the automotive insulation resistance is in line with the real-time reporting, the reporting period must be performed in the delayed reporting mode, and the reporting period will be completed. After that, according to the actual value collected, it is judged whether the next time is to enter real-time reporting or delayed reporting.

According to the method for reporting automobile insulation resistance proposed in the embodiment of the present application, the actual value of the automobile insulation resistance can be detected, and the current resistance interval in which the actual value is located can be matched according to the actual value, and the reported value of the automobile insulation resistance can be calculated according to the current resistance interval, And report the reported value, while ensuring the high voltage safety of the whole vehicle, it reduces the false triggering or non-identification caused by the objective existence of the insulation resistance detection accuracy.

Next, the device for reporting insulation resistance of automobiles according to the embodiments of the present application will be described with reference to the accompanying drawings.

FIG. 3 is a schematic block diagram of an apparatus for reporting insulation resistance of an automobile according to an embodiment of the present application.

As shown in FIG. 3 , the device 10 for reporting insulation resistance of an automobile includes: a detection module 100 , a matching module 200 and a reporting module 300 .

Wherein, the detection module 100 is used to detect the actual value of the insulation resistance of the automobile;

The matching module 200 is configured to match the current resistance interval in which the actual value is located according to the actual value; and

The reporting module 300 is configured to calculate the reported value of the insulation resistance of the automobile according to the current resistance interval, and report the reported value.

Optionally, in some embodiments, the reporting module 300 includes:

The determining unit is used to determine the reporting method of the reported value according to the current resistance interval, and the reporting method includes real-time reporting and delayed reporting;

The reporting unit is used to report the reported value based on the reporting method.

Optionally, in some embodiments, when the reporting mode is delayed reporting, the reporting unit includes:

Determine the reporting period according to the current resistance range;

Obtain the current actual value of the automobile insulation resistance and the actual value at other times in the reporting period;

The reported value is determined according to the current actual value and the actual value at other times in the reporting period and its corresponding current resistance interval, and the reported value is reported according to the reporting period.

Optionally, the priority of delayed reporting is higher than that of real-time reporting.

Optionally, in some embodiments, the reporting unit further includes:

Determine the current resistance interval to which the current actual value of each sampling point matches

The current sampling type is obtained according to the current resistance interval of each sampling point, and the reported value is calculated according to the current sampling type.

It should be noted that the foregoing explanations on the embodiment of the method for reporting the insulation resistance of automobiles are also applicable to the device for reporting the insulation resistance of automobiles in this embodiment, which will not be repeated here.

According to the reporting device of the automobile insulation resistance proposed in the embodiment of the present application, the actual value of the automobile insulation resistance can be detected, and the current resistance interval in which the actual value is located can be matched according to the actual value, and the reported value of the automobile insulation resistance can be calculated according to the current resistance interval, And report the reported value, while ensuring the high voltage safety of the whole vehicle, it reduces the false triggering or non-identification caused by the objective existence of the insulation resistance detection accuracy.

In addition, as shown in FIG. 4 , an embodiment of the present application further provides an automobile 20 , and the automobile 20 includes the above-mentioned device for reporting the insulation resistance of the automobile.

According to the automobile proposed in the embodiment of the present application, through the above-mentioned reporting device of automobile insulation resistance, the actual value of automobile insulation resistance can be detected, and the current resistance interval in which the actual value is located can be matched according to the actual value, and the automobile insulation can be calculated according to the current resistance interval. The reported value of the resistance is reported and the reported value is reported, which ensures the safety of the high voltage of the whole vehicle, and reduces the false triggering or non-identification caused by the objective existence of the insulation resistance detection accuracy.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or N of the embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present application, "N" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or N more executable instructions for implementing custom logical functions or steps of the process , and the scope of the preferred embodiments of the present application includes alternative implementations in which the functions may be performed out of the order shown or discussed, including performing the functions substantially concurrently or in the reverse order depending upon the functions involved, which should It is understood by those skilled in the art to which the embodiments of the present application belong.

The logic and/or steps represented in flowcharts or otherwise described herein, for example, may be considered an ordered listing of executable instructions for implementing the logical functions, may be embodied in any computer-readable medium, For use with, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from and execute instructions from an instruction execution system, apparatus, or apparatus) or equipment. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or apparatus. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections (electronic devices) with one or N wires, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read Only Memory (ROM), Erasable Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, followed by editing, interpretation, or other suitable medium as necessary process to obtain the program electronically and then store it in computer memory.

It should be understood that various parts of this application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the N steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented by any one of the following techniques known in the art, or a combination thereof: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.

Those skilled in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. When executed, one or a combination of the steps of the method embodiment is included.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.

The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. A reporting method of automobile insulation resistance is characterized by comprising the following steps:

detecting an actual value of the insulation resistance of the automobile;

matching the current resistance interval where the actual value is located according to the actual value; and

and calculating the reported value of the automobile insulation resistance according to the current resistance interval, and reporting the reported value.

2. The method of claim 1, wherein reporting the reported value comprises:

determining a reporting mode of the reported value according to the current resistance interval, wherein the reporting mode comprises real-time reporting and delayed reporting;

and reporting the reported value based on the reporting mode.

3. The method of claim 2, wherein when the reporting mode is the delayed reporting, the reporting the reported value based on the reporting mode comprises:

determining a reporting period according to the current resistance interval;

acquiring the current actual value of the automobile insulation resistance and the actual values at other moments in the reporting period;

and determining the reported value according to the current actual value, the actual values at other moments in the reporting period and the corresponding current resistance interval, and reporting the reported value according to the reporting period.

4. The method according to claim 2 or 3, wherein the priority of the delayed reporting is higher than the priority of the real-time reporting.

5. The method of claim 3, wherein the determining the reported value according to the current actual value, the actual values at other times in the reporting period, and the current resistance interval corresponding thereto, respectively, comprises:

determining the current resistance interval where the current actual value of each sampling point is matched

And obtaining a current sampling type according to the current resistance interval of each sampling point, and calculating the reported value according to the current sampling type.

6. Device for reporting automobile insulation resistance is characterized by comprising:

the detection module is used for detecting the actual value of the automobile insulation resistance;

the matching module is used for matching the current resistance interval where the actual value is located according to the actual value; and

and the reporting module is used for calculating the reported value of the automobile insulation resistance according to the current resistance interval and reporting the reported value.

7. The apparatus of claim 6, wherein the reporting module comprises:

the determining unit is used for determining a reporting mode of the reported value according to the current resistance interval, wherein the reporting mode comprises real-time reporting and delayed reporting;

and the reporting unit is used for reporting the reported value based on the reporting mode.

8. The apparatus of claim 7, wherein when the reporting mode is the delayed reporting, the reporting unit comprises:

determining a reporting period according to the current resistance interval;

acquiring the current actual value of the automobile insulation resistance and the actual values at other moments in the reporting period;

and determining the reported value according to the current actual value, the actual values at other moments in the reporting period and the corresponding current resistance interval, and reporting the reported value according to the reporting period.

9. The apparatus of claim 7 or 8, wherein the priority of the delayed reporting is higher than the priority of the real-time reporting.

10. An automobile, comprising: the reporting apparatus of the insulation resistance of the automobile as claimed in any one of claims 6 to 9.

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