Wire harness protection method and device, computer readable storage medium and vehicle

Abstract

The invention relates to a wire harness protection method and device, a computer readable storage medium and a vehicle. The method comprises the steps that the current value of a wire harness is detected; determining a corresponding current range according to the current value, and determining target protection time delay according to the current range; and if all the current values acquired in the target protection time delay are within the current range, protecting the wire harness. By determining the target protection time delay of the current value and protecting the wire harness only when all the current values acquired in the target protection time delay are within the current range, the problem of inaccurate judgment caused by instantaneous sudden current change of the wire harness due to some reasons is avoided, and the accuracy of wire harness protection is improved.

Description

Technical Field

[0001] The present application relates to the field of detection technology, and in particular to a wiring harness protection method, device, computer-readable storage medium and vehicle. Background Art

[0002] With the continuous development of vehicles, the functions of vehicles are increasing, which leads to an increasing number of wiring harnesses in vehicles, and the protection of wiring harnesses is becoming more and more important.

[0003] The existing wiring harness protection method usually directly protects the wiring harness when it is detected that the actual current of the wiring harness does not match the preset current; however, the wiring harness may produce an instantaneous current mutation for some reason. Therefore, using the existing wiring harness protection method will result in low accuracy of the wiring harness protection. Summary of the invention

[0004] The embodiment of the present application provides a wire harness protection method, which can improve the accuracy of wire harness protection to solve the above-mentioned technical problems.

[0005] In order to achieve the above object, according to a first aspect of the present application, a wire harness protection method is provided, the method comprising:

[0006] Detect the current value of the wiring harness;

[0007] Determining a corresponding current range according to the current value, and determining a target protection delay according to the current range;

[0008] If all current values ​​acquired within the target protection delay are within the current range, the wiring harness is protected.

[0009] Optionally, determining a corresponding current range according to the current value includes:

[0010] The current range to which the current value belongs is determined according to the current value and a preset current range.

[0011] Optionally, the preset current range includes at least two;

[0012] The step of determining the current range to which the current value belongs according to the current value and the preset current range includes:

[0013] The current value is compared with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs.

[0014] Optionally, the current threshold includes: a first current threshold, a second current threshold, a third current threshold and a fourth current threshold;

[0015] The comparing the current value with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs includes:

[0016] Comparing the current value with the current thresholds corresponding to the preset current ranges to obtain a comparison result;

[0017] If the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, it is determined that the current value belongs to the first current range;

[0018] If the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, it is determined that the current value belongs to the second current range;

[0019] If the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

[0020] Optionally, a correspondence between different current ranges and different protection time delays is established in advance;

[0021] The determining a target protection delay according to the current range includes:

[0022] According to the corresponding relationship, a protection delay corresponding to the current range to which the current value belongs is determined, and set as the target protection delay.

[0023] Optionally, the method further comprises:

[0024] Obtaining the operating temperature and wire diameter of the wire harness;

[0025] Determining a target smoke curve corresponding to the wire harness based on the operating temperature and the wire diameter;

[0026] Based on the target smoke curve, a current threshold corresponding to the wiring harness and a preset current range corresponding to the current threshold are determined.

[0027] Optionally, if all current values ​​acquired within the target protection delay are within the current range, protecting the wiring harness includes:

[0028] Within the target protection delay, cyclically acquiring current values ​​of the wiring harness, and comparing all the current values ​​with the current range;

[0029] If all the current values ​​are within the current range, the wiring harness is protected.

[0030] Optionally, after detecting the current value of the wiring harness, the method further comprises:

[0031] comparing the current value with a minimum current threshold;

[0032] If the current value is not greater than the minimum current threshold, the wiring harness is not protected.

[0033] Optionally, after detecting the current value of the wiring harness, the method further comprises:

[0034] comparing the current value with a maximum current threshold;

[0035] If the current value is greater than the maximum current threshold, the wiring harness is protected.

[0036] Optionally, protecting the wiring harness includes:

[0037] The wiring harness is powered off and a fault alarm is issued.

[0038] Optionally, after the fault alarm is issued, the following steps are included:

[0039] Acquire the number information of the wiring harness and the fault current value of the wiring harness;

[0040] The number information and the fault current value are stored in association with each other.

[0041] Optionally, after detecting the current value of the wiring harness, the method further comprises:

[0042] Detecting whether the fault alarm of the wiring harness is cleared;

[0043] If the fault alarm of the wiring harness is not cleared, the wiring harness is kept protected.

[0044] According to a second aspect of the present application, another wiring harness protection method is provided, the method comprising:

[0045] Detect the current value of the wiring harness;

[0046] Determining a corresponding current range according to the current value, and determining a target protection delay according to the current range;

[0047] If the duration for which the current value is within the current range is greater than the target protection delay, the wiring harness is protected.

[0048] Optionally, determining a corresponding current range according to the current value includes:

[0049] The current range to which the current value belongs is determined according to the current value and a preset current range.

[0050] Optionally, the preset current range includes at least two;

[0051] The step of determining the current range to which the current value belongs according to the current value and the preset current range includes:

[0052] The current value is compared with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs.

[0053] Optionally, the current threshold includes: a first current threshold, a second current threshold, a third current threshold and a fourth current threshold;

[0054] The comparing the current value with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs includes:

[0055] Comparing the current value with the current thresholds corresponding to the preset current ranges to obtain a comparison result;

[0056] If the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, it is determined that the current value belongs to the first current range;

[0057] If the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, it is determined that the current value belongs to the second current range;

[0058] If the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

[0059] Optionally, a correspondence between different current ranges and different protection time delays is established in advance;

[0060] The determining a target protection delay according to the current range includes:

[0061] According to the corresponding relationship, a protection delay corresponding to the current range to which the current value belongs is determined, and set as the target protection delay.

[0062] Optionally, if the duration of the current value being within the current range is greater than the target protection delay, protecting the wiring harness comprises:

[0063] continuously monitoring the current value of the wiring harness, and calculating the duration of time during which the current value is within the current range;

[0064] If the duration for which the current value is within the current range is greater than the target protection delay, the wiring harness is protected.

[0065] Optionally, after continuously monitoring the current value of the wiring harness and calculating the duration of the current value being within the current range, the method further includes:

[0066] If the duration for which the current value is within the current range is not greater than the target protection delay, the wiring harness is not protected.

[0067] Optionally, the method further comprises:

[0068] If the current value is not greater than the minimum current threshold, the wiring harness is not protected;

[0069] If the current value is greater than a maximum current threshold, the wiring harness is protected.

[0070] According to a third aspect of the present application, there is provided a wiring harness protection device, the wiring harness protection device comprising:

[0071] A first detection unit, used for detecting a current value of the wiring harness;

[0072] A first determining unit, configured to determine a corresponding current range according to the current value, and determine a target protection delay according to the current range;

[0073] The first protection unit is configured to protect the wiring harness if all current values ​​acquired within the target protection delay are within the current range.

[0074] According to a fourth aspect of the present application, another wiring harness protection device is provided, the wiring harness protection device comprising:

[0075] A second detection unit, used for detecting a current value of the wiring harness;

[0076] a second determining unit, configured to determine a corresponding current range according to the current value, and determine a target protection delay according to the current range;

[0077] The second protection unit is configured to protect the wiring harness if the duration for which the current value is within the current range is greater than the target protection delay.

[0078] According to the fifth aspect of the present application, an embodiment of the present application also provides a computer-readable storage medium, which stores multiple computer programs. The computer programs are suitable for loading by a processor to execute the steps of any wire harness protection method provided in the embodiment of the present application.

[0079] According to the sixth aspect of the present application, an embodiment of the present application also provides a computer program product, including a computer program or a computer program, which implements the steps of any wire harness protection method provided in the embodiment of the present application when the computer program or the computer program is executed by a processor.

[0080] According to the seventh aspect of the present application, an embodiment of the present application also provides a vehicle, the vehicle includes a processor and a memory, and the memory stores a computer program; when the computer program is executed by the processor, the processor executes the steps of the above-mentioned wiring harness protection method.

[0081] The wiring harness protection method of the embodiment of the present application detects the current value of the wiring harness; determines the corresponding current range according to the current value, and determines the target protection delay according to the current range; if all current values ​​obtained within the target protection delay are within the current range, the wiring harness is protected. By determining the target protection delay of the current value, and protecting the wiring harness only when all current values ​​obtained within the target protection delay are within the current range, the problem of inaccurate judgment caused by instantaneous current mutations in the wiring harness due to some reasons is avoided, thereby improving the accuracy of wiring harness protection.

[0082] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0084] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings.

[0085] Figure 1 It is a schematic flow chart of a first embodiment of a wiring harness protection method provided by the present application;

[0086] Figure 2 It is a schematic flow chart of a second embodiment of the wiring harness protection method provided by the present application;

[0087] Figure 3 It is a schematic flow chart of a third embodiment of the wiring harness protection method provided by the present application;

[0088] Figure 4 is a schematic flow chart of a fourth embodiment of the wiring harness protection method provided by the present application;

[0089] Figure 5 is a schematic flow chart of a fifth embodiment of the wiring harness protection method provided by the present application;

[0090] Figure 6 is a flowchart of a sixth embodiment of the wiring harness protection method provided by the present application;

[0091] Figure 7 is a flow chart of a seventh embodiment of the wiring harness protection method provided by the present application;

[0092] Figure 8 is a flowchart of an eighth embodiment of the wiring harness protection method provided by the present application;

[0093] Fig. 9 is a flow chart of a ninth embodiment of the wiring harness protection method provided by the present application;

[0094] Fig.10 is a flowchart of a tenth embodiment of a wiring harness protection method provided by the present application;

[0095] Fig.11 is a schematic flow chart of an eleventh embodiment of the wiring harness protection method provided by the present application;

[0096] Fig.12 is a structural schematic diagram of a wire harness protection device provided in an embodiment of the present application;

[0097] Fig.13 is a structural schematic diagram of another wiring harness protection device provided in an embodiment of the present application;

[0098] Fig.14 It is a schematic diagram of the structure of the vehicle provided in the embodiment of the present application. DETAILED DESCRIPTION

[0099] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0100] Embodiments of the present application provide a wire harness protection method, device, computer-readable storage medium, and vehicle.

[0101] The wiring harness protection method provided in the embodiment of the present application can be applied to a vehicle, which may be a fuel vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc., and the present disclosure does not make any specific limitations on this.

[0102] The following is a detailed description of the embodiments in conjunction with the accompanying drawings. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments. Although the logical order is shown in the flow chart, in some cases, the steps shown or described may be performed in an order different from that shown in the accompanying drawings.

[0103] Please refer to Figure 1, a first embodiment of the wire harness protection method is proposed, and the wire harness protection method of the first embodiment comprises the following steps:

[0104] Step 101, detecting the current value of the wiring harness;

[0105] In this step, the vehicle can detect all wiring harnesses during operation. For each wiring harness, the vehicle detects the current value of the wiring harness once every preset time interval. For example, the vehicle detects the current value of the wiring harness every 100ms. The wiring harnesses include: distribution harness, power harness, body harness, chassis harness, control harness, sensor harness, etc.

[0106] Step 102, determining a corresponding current range according to the current value, and determining a target protection delay according to the current range;

[0107] In this step, after the vehicle detects the current value of the wiring harness, it determines the corresponding current range according to the current value, and determines the target protection delay according to the current range. The target protection delay is used to indicate that the wiring harness starts to be protected after the target delay.

[0108] Optionally, different wiring harnesses correspond to different current ranges, and each wiring harness usually corresponds to multiple current ranges, and each current range corresponds to a protection delay; the vehicle compares the current value with each current range respectively, determines the current range corresponding to the current value, and then determines the target protection delay based on the current range; wherein, the target protection delay is the protection delay corresponding to the current range in which the current value is located.

[0109] Optionally, different wiring harnesses correspond to different current threshold sets, and each wiring harness usually corresponds to multiple current threshold sets. Every two adjacent current thresholds in the current threshold set constitute a current range, and each current range corresponds to a protection delay. The vehicle compares the current value with the minimum current threshold and the maximum current threshold in each current range. If it is determined that the current value is greater than the minimum current threshold and not greater than the maximum current threshold, it is determined that the current value belongs to the current range, and then the protection delay corresponding to the current range is determined as the target protection delay.

[0110] Step 103: If all current values ​​acquired within the target protection delay are within the current range, the wiring harness is protected.

[0111] In this step, after determining the target protection delay, the vehicle continuously obtains the current value of the wiring harness within the target protection delay. If all current values ​​obtained within the target protection delay are within the corresponding current range, the wiring harness is protected. It should be noted that if all current values ​​obtained by the vehicle within the target protection delay are greater than the current threshold, it can be further determined that the wiring harness is faulty, and the wiring harness is immediately protected.

[0112] The vehicle of this embodiment detects the current value of the wiring harness; determines the corresponding current range according to the current value, and determines the target protection delay according to the current range; if all current values ​​obtained within the target protection delay are within the current range, the wiring harness is protected. By determining the target protection delay of the current value, and protecting the wiring harness only when all current values ​​obtained within the target protection delay are within the current range, the problem of inaccurate judgment caused by instantaneous current mutations in the wiring harness due to some reasons is avoided, thereby improving the accuracy of wiring harness protection.

[0113] Please refer to Figure 2 , a second embodiment of the present application is proposed. The difference between the second embodiment and the first embodiment is that the corresponding current range is determined according to the current value, including:

[0114] Step 1021: Determine the current range to which the current value belongs according to the current value and a preset current range.

[0115] In this step, the vehicle determines the current range to which the current value belongs within the preset current range based on the current value and the mapping relationship between the preset current value and the preset current range; it can be understood that for each wiring harness, the vehicle stores the corresponding mapping relationship between the current value and the preset current range. After determining the corresponding wiring harness, the vehicle obtains the mapping relationship between the current value corresponding to the wiring harness and the preset current range, and determines the current range to which the current value belongs in combination with the detected current value.

[0116] Specifically, in the mapping relationship between the preset current value and the current range corresponding to the wiring harness stored in the vehicle, the current range includes: a first current range, a second current range and a third current range, and each current value corresponds to one of the first current range, the second current range and the third current range. The vehicle determines one of the first current range, the second current range and the third current range as the current range corresponding to the current value according to the current value and the mapping relationship between the preset current value and the current range.

[0117] Exemplarily, the current range includes: a first current range greater than 7A and less than or equal to 10A, a second current range greater than 10A and less than or equal to 30A, and a third current range greater than 30A and less than or equal to 60A. If the vehicle detects that the current value of the wiring harness is 40A, the third current range can be determined as the current range corresponding to the current value; if the vehicle detects that the current value of the wiring harness is 20A, the second current range can be determined as the current range corresponding to the current value; if the vehicle detects that the current value of the wiring harness is 9A, the first current range can be determined as the current range corresponding to the current value.

[0118] The vehicle of this embodiment determines the current range corresponding to the current value based on the mapping relationship between the current value and the preset current value and the current range, and can quickly locate the current range corresponding to the current value, thereby improving the efficiency of the determined current range, which in turn helps to improve the efficiency of subsequent protection of the wiring harness based on the current range and protection delay.

[0119] Please refer to Figure 3 , a third embodiment of the present application is proposed. The difference between the third embodiment and the first to second embodiments is that the preset current range includes at least two, and the determining the current range to which the current value belongs according to the current value and the preset current range includes:

[0120] Step 10211: compare the current value with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs.

[0121] In this step, at least two preset current ranges corresponding to the wiring harness are stored in the vehicle in advance, and for each wiring harness, the vehicle can determine the corresponding at least two preset current ranges. The vehicle compares the current value with the current threshold corresponding to each preset current range to determine the current range to which the current value belongs.

[0122] Specifically, the current threshold set includes: a first current threshold, a second current threshold, a third current threshold and a fourth current threshold; the comparing the current value with the current thresholds corresponding to each of the preset current ranges to determine the current range to which the current value belongs includes:

[0123] Step 102111, comparing the current value with the current thresholds corresponding to the preset current ranges to obtain a comparison result;

[0124] Step 102112: if the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, determine that the current value belongs to the first current range;

[0125] Step 102113: if the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, determine that the current value belongs to the second current range;

[0126] Step 102114: if the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, determine that the current value belongs to the third current range.

[0127] In steps 102111 to 102114, the current thresholds corresponding to the wiring harness stored in the vehicle include: a first current threshold, a second current threshold, a third current threshold and a fourth current threshold, the first current threshold < the second current threshold < the third current threshold < the fourth current threshold; the vehicle compares the current value with the current thresholds corresponding to each preset current range to obtain a comparison result; if the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, it is determined that the current value belongs to the first current range; if the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, it is determined that the current value belongs to the second current range; if the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

[0128] Exemplarily, the first current threshold is 7A, the second current threshold is 10A, the third current threshold is 30A, and the fourth current threshold is 60A, and the current range includes: a first current range greater than 7A and less than or equal to 10A, a second current range greater than 10A and less than or equal to 30A, and a third current range greater than 30A and less than or equal to 60A. If the vehicle detects that the current value of the wiring harness is 40A, the third current range can be determined as the current range corresponding to the current value; if the vehicle detects that the current value of the wiring harness is 20A, the second current range can be determined as the current range corresponding to the current value; if the vehicle detects that the current value of the wiring harness is 9A, the first current range can be determined as the current range corresponding to the current value.

[0129] Specifically, the steps of determining the current threshold and the preset current range corresponding to the current threshold include:

[0130] Step a, obtaining the operating temperature and wire diameter of the wire harness;

[0131] In this step, the vehicle obtains the working temperature and wire diameter of the wire harness. Specifically, the memory in the vehicle will store each wire harness and wire diameter in the vehicle. When the vehicle determines the wire harness that needs to be monitored, it can obtain the wire diameter of the wire harness in the memory; each wire harness is equipped with a corresponding temperature sensor, and the vehicle can read the value of the temperature sensor corresponding to the wire harness to determine the working temperature of the wire harness.

[0132] Step b, determining a target smoke curve corresponding to the wire harness based on the operating temperature and the wire diameter;

[0133] In this step, after obtaining the working temperature and wire diameter of the wire harness, the vehicle determines the target smoke curve corresponding to the wire harness from all pre-stored smoke curves corresponding to the wire harness based on the working temperature and wire diameter.

[0134] Specifically, the time-current curve corresponding to the wiring harness is a smoke curve. Wire harnesses with different wire diameters have different corresponding smoke curves, and wire harnesses at different operating temperatures have different corresponding smoke curves. Therefore, all pre-stored smoke curves corresponding to the wiring harness include smoke curves for multiple wire diameters and multiple operating temperatures. The vehicle can determine the target smoke curve corresponding to the wiring harness among all smoke curves based on the currently determined operating temperature and wire diameter.

[0135] Step c: determining a current threshold corresponding to the wiring harness and a preset current range corresponding to the current threshold based on the target smoke curve.

[0136] In this step, the vehicle determines the current threshold corresponding to the wiring harness based on the smoke curve, and then determines the corresponding preset current range according to the current threshold.

[0137] Specifically, the smoke curve shows the current value of the wiring harness that changes with time and remains stable for a period of time under fault conditions, and the vehicle determines the current threshold value based on the current value that remains stable for a period of time in the smoke curve. For example, in a smoke curve, as time changes, the current value of the wiring harness remains stable for a period of time at 60A, 30A, 10A and 7A, respectively. At this time, the vehicle can determine that the current threshold value includes 60A, 30A, 10A and 7A; the preset current range includes: a first current range greater than 7A and less than or equal to 10A, a second current range greater than 10A and less than or equal to 30A, and a third current range greater than 30A and less than or equal to 60A

[0138] The vehicle of this embodiment determines the smoke curve according to the working temperature and wire diameter of the wiring harness, determines the current threshold according to the smoke curve, and then determines the current range according to the current threshold and the current value, thereby improving the accuracy of the determined current range, which in turn helps to accurately protect the wiring harness according to the current range and protection delay.

[0139] Please refer to Figure 4 , a fourth embodiment of the present application is proposed, and the difference between the fourth embodiment and the first to third embodiments is that a correspondence between different current ranges and different protection delays is established in advance;

[0140] The determining a target protection delay according to the current range includes:

[0141] Step 1022: Determine, according to the corresponding relationship, a protection delay corresponding to the current range to which the current value belongs, and set it as the target protection delay.

[0142] In this step, the vehicle pre-establishes a correspondence between different current ranges and different protection delays, determines the current range corresponding to the current value, and can determine the protection delay corresponding to the current range to which the current value belongs based on the correspondence, and sets the protection delay as the target protection delay.

[0143] Exemplarily, the corresponding relationship between different current ranges and different protection delays is: the first current range greater than 7A and less than or equal to 10A corresponds to a protection delay of 10s, the second current range greater than 10A and less than or equal to 30A corresponds to a protection delay of 1s, and the third current range greater than 30A and less than or equal to 60A corresponds to a protection delay of 1s. If the current value is 9A, it is determined that the current value is in the first current range, and the target protection delay is determined to be 10s.

[0144] The vehicle of this embodiment determines the protection delay corresponding to the current range to which the current value belongs based on the pre-established correspondence between different current ranges and different protection delays, and sets it as the target protection delay, thereby improving the efficiency of determining the protection delay, which in turn helps to improve the efficiency of subsequent protection of the wiring harness according to the current range and protection delay.

[0145] Please refer to Figure 5 , a fifth embodiment of the present application is proposed. The difference between the fifth embodiment and the first to fourth embodiments is that if all current values ​​acquired within the target protection delay are greater than the current threshold, the wiring harness is protected, including:

[0146] Step 1031, within the target protection delay, cyclically obtain the current value of the wiring harness, and compare all the current values ​​with the current range;

[0147] Step 1032: If all the current values ​​are within the current range, the wiring harness is protected.

[0148] In step 1031 to step 1032, the vehicle cyclically obtains the current value of the wiring harness within the target protection delay, and compares all current values ​​with the current range. If all current values ​​obtained within the target protection delay are within the current range, the wiring harness is protected. For example, if the current value is 9A, the current value is determined to be within a current range of less than or equal to 10A and greater than 7A, and the target protection delay is determined to be 10s. Within 10s after the current range is determined, the vehicle cyclically obtains the current value of the wiring harness. If all current values ​​are within a current range of less than or equal to 10A and greater than 7A, the wiring harness is protected.

[0149] Furthermore, when the vehicle is in the process of cyclically acquiring the current value of the wiring harness within the target protection delay, if the current value acquired falls within other current ranges, the corresponding target protection delay needs to be updated, and the current value of the wiring harness continues to be cyclically acquired based on the new target protection delay. For example, if the current value is 9A, it is determined that the current value is within a current range of less than or equal to 10A and greater than 7A, and the target protection delay is determined to be 10s. Within 10s after the current range is determined, the vehicle cyclically acquires the current value of the wiring harness; when the vehicle is in the process of cyclically acquiring the current value of the wiring harness, if the current value acquired is 20A, it is determined that the current value 20A is within a current range of less than or equal to 30A and greater than 10A, and at this time, the target protection delay needs to be changed to 1s, and the current value of the wiring harness continues to be cyclically acquired within 1s.

[0150] After determining the target protection delay, the vehicle of this embodiment obtains the current value of the wiring harness within the target protection delay, and protects the wiring harness only when all current values ​​obtained within the target protection delay are within the current range, thereby avoiding the problem of inaccurate judgment caused by instantaneous current mutation in the wiring harness due to some reasons, thereby improving the accuracy of wiring harness protection.

[0151] Further, after detecting the current value of the wiring harness, the method further comprises:

[0152] Step d, comparing the current value with the minimum current threshold in the current threshold set;

[0153] Step e: if the current value is not greater than the minimum current threshold, then the wiring harness is not protected.

[0154] In step d to step e, after the vehicle detects the current value of the wiring harness, the current value is compared with the minimum current threshold in the current threshold set; if the current value is not greater than the minimum current threshold, the wiring harness is not protected. Exemplarily, the first current threshold includes 60A, 30A, 10A and 7A, where 7A is the maximum threshold, and if the current value obtained by the vehicle is not greater than 7A, the wiring harness is not protected.

[0155] It can be understood that the minimum current threshold in the current threshold set is a safety threshold. If the current value is not greater than the minimum current threshold, it means that there is no fault in the wiring harness and the wiring harness does not need to be protected.

[0156] Furthermore, after detecting the current value of the wiring harness, the method further includes:

[0157] Step f, comparing the current value with the maximum current threshold in the current threshold set;

[0158] Step g: if the current value is greater than the maximum current threshold, protecting the wiring harness.

[0159] In step f to step g, after the vehicle detects the current value of the wiring harness, the current value is compared with the maximum current threshold in the current threshold set; if the current value is greater than the maximum current threshold, the wiring harness is immediately protected. Exemplarily, the current thresholds include 60A, 30A, 10A and 7A, where 60A is the maximum threshold. If the current value obtained by the vehicle is greater than 60A, the wiring harness is immediately protected.

[0160] It is understandable that the maximum current threshold in the current threshold set is the severe fault threshold. If the current value is greater than the maximum current threshold, it means that there is a severe fault in the wiring harness. The vehicle does not need to consider the target protection delay, but immediately protects the wiring harness to avoid severe faults that further endanger vehicle safety.

[0161] refer to Figure 6 , a sixth embodiment of the present application is proposed. The difference between the sixth embodiment and the first to fifth embodiments is that the protection of the wiring harness includes:

[0162] Step 1034, power off the wiring harness and issue a fault alarm.

[0163] Furthermore, after the fault alarm is issued, the following steps are included:

[0164] Step 1035, obtaining the number information of the wiring harness and the fault current value of the wiring harness;

[0165] Step 1036: store the number information and the fault current value in association with each other.

[0166] In step 1034 to step 1036, when the vehicle determines that the wiring harness needs to be protected, the wiring harness is powered off and a fault alarm is issued to the user; after the vehicle issues the fault alarm, the wiring harness number information and the fault current value of the wiring harness are obtained, and the number information and the fault current value are associated and stored, so as to facilitate the subsequent detection of the current value of the wiring harness to determine whether the fault has been restored. At the same time, it is also convenient for relevant maintenance personnel to quickly determine the faulty wiring harness according to the number information and the fault current value for maintenance.

[0167] Further, after obtaining the current value of the wiring harness, the method further comprises:

[0168] Step h, detecting whether the fault alarm of the wiring harness is cleared;

[0169] Step i: if the fault alarm of the wiring harness is not cleared, the wiring harness is kept protected.

[0170] In step h to step i, it can be understood that after the vehicle issues a fault alarm, it stores the serial number information of the faulty wiring harness and the fault current value in association. In the subsequent detection of the current value of the wiring harness, the vehicle first detects whether the wiring harness has a fault current value from the stored information. If it does, it is determined that the fault of the wiring harness has not been restored, and the fault alarm of the wiring harness has not been lifted. The wiring harness is protected and there is no need to detect the current value, so as to avoid wasting useless work and avoid wasting computing resources. If it does not exist, it is determined that the fault of the wiring harness has been restored and it is necessary to continue to detect the current value. After the fault of the wiring harness is restored, the vehicle automatically deletes the serial number information and fault current value stored in association with the wiring harness.

[0171] After protecting the wiring harness, the vehicle of this embodiment issues a fault alarm; obtains the wiring harness number information and the wiring harness fault current value; and stores the number information and the fault current value in association, so as to facilitate subsequent detection of whether the wiring harness fault alarm is cleared. This can avoid the useless work of comparing the current value with the threshold value when the wiring harness fault alarm is not cleared, and avoid the waste of computing resources.

[0172] refer to Figure 7 , a seventh embodiment of the present application is proposed. The difference between the seventh embodiment and the first to sixth embodiments is that another wire harness protection method is provided, the method comprising:

[0173] Step 201, detecting the current value of the wiring harness;

[0174] In this step, the vehicle can detect all wiring harnesses during operation. For each wiring harness, the vehicle detects the current value of the wiring harness once every preset time interval. For example, the vehicle detects the current value of the wiring harness every 100ms. The wiring harnesses include: distribution harness, power harness, body harness, chassis harness, control harness, sensor harness, etc.

[0175] Step 202, determining a corresponding current range according to the current value, and determining a target protection delay according to the current range;

[0176] In this step, after the vehicle detects the current value of the wiring harness, it determines the corresponding current range according to the current value, and determines the target protection delay according to the current range. The target protection delay is used to indicate that the wiring harness starts to be protected after the target delay.

[0177] Optionally, different wiring harnesses correspond to different current ranges, and each wiring harness usually corresponds to multiple current ranges, and each current range corresponds to a protection delay; the vehicle compares the current value with each current range respectively, determines the current range corresponding to the current value, and then determines the target protection delay based on the current range; wherein, the target protection delay is the protection delay corresponding to the current range in which the current value is located.

[0178] Optionally, different wiring harnesses correspond to different current thresholds, and each wiring harness usually corresponds to multiple current thresholds. Each two adjacent current thresholds constitute a current range, and each current range corresponds to a protection delay. The vehicle compares the current value with the minimum current threshold and the maximum current threshold in each current range. If it is determined that the current value is greater than the minimum current threshold and not greater than the maximum current threshold, it is determined that the current value belongs to the current range, and then the protection delay corresponding to the current range is determined as the target protection delay.

[0179] Step 203: If the duration that the current value is within the current range is greater than the target protection delay, the wiring harness is protected.

[0180] In this step, after determining the target protection delay, the vehicle continuously obtains the current value of the wiring harness. If the duration of the current value being within the current range is longer than the target protection delay, the wiring harness is protected. It should be noted that if the duration of the vehicle current value being within the current range is longer than the target protection delay, it can be determined that the wiring harness is faulty, and the wiring harness is immediately protected.

[0181] The vehicle of this embodiment detects the current value of the wiring harness; determines the corresponding current range according to the current value, and determines the target protection delay according to the current range; if the duration of the current value within the current range is greater than the target protection delay, the wiring harness is protected. By determining the target protection delay of the current value, and protecting the wiring harness only when the duration of the current value within the current range is greater than the target protection delay, the problem of inaccurate judgment caused by the instantaneous current mutation of the wiring harness due to some reasons is avoided, thereby improving the accuracy of the wiring harness protection.

[0182] Please refer to Figure 8 , an eighth embodiment of the present application is proposed. The difference between the eighth embodiment and the first to seventh embodiments is that the corresponding current range is determined according to the current value, including:

[0183] Step 2021: Determine the current range to which the current value belongs according to the current value and a preset current range.

[0184] In this step, the vehicle determines the current range to which the current value belongs within the preset current range based on the current value and the mapping relationship between the preset current value and the preset current range; it can be understood that for each wiring harness, the vehicle stores the corresponding mapping relationship between the current value and the preset current range. After determining the corresponding wiring harness, the vehicle obtains the mapping relationship between the current value corresponding to the wiring harness and the preset current range, and determines the current range to which the current value belongs in combination with the detected current value.

[0185] Specifically, in the mapping relationship between the preset current value and the current range corresponding to the wiring harness stored in the vehicle, the current range includes: a first current range, a second current range and a third current range, and each current value corresponds to one of the first current range, the second current range and the third current range. The vehicle determines one of the first current range, the second current range and the third current range as the current range corresponding to the current value according to the current value and the mapping relationship between the preset current value and the current range.

[0186] Exemplarily, the current range includes: a first current range greater than 7A and less than or equal to 10A, a second current range greater than 10A and less than or equal to 30A, and a third current range greater than 30A and less than or equal to 60A. If the vehicle detects that the current value of the wiring harness is 40A, the third current range can be determined as the current range corresponding to the current value; if the vehicle detects that the current value of the wiring harness is 20A, the second current range can be determined as the current range corresponding to the current value; if the vehicle detects that the current value of the wiring harness is 9A, the first current range can be determined as the current range corresponding to the current value.

[0187] The vehicle of this embodiment determines the current range corresponding to the current value based on the mapping relationship between the current value and the preset current value and the current range, and can quickly locate the current range corresponding to the current value, thereby improving the efficiency of the determined current range, which in turn helps to improve the efficiency of subsequent protection of the wiring harness based on the current range and protection delay.

[0188] Please refer to Fig. 9 , a ninth embodiment of the present application is proposed. The difference between the ninth embodiment and the first to eighth embodiments is that the preset current range includes at least two, and the determining the current range to which the current value belongs according to the current value and the preset current range includes:

[0189] Step 20211, comparing the current value with the current thresholds corresponding to the preset current ranges respectively, to determine the current range to which the current value belongs.

[0190] In this step, at least two preset current ranges corresponding to the wiring harness are stored in the vehicle in advance, and for each wiring harness, the vehicle can determine the corresponding at least two preset current ranges. The vehicle compares the current value with the current threshold corresponding to each preset current range to determine the current range to which the current value belongs.

[0191] Specifically, the current threshold set includes: a first current threshold, a second current threshold, a third current threshold and a fourth current threshold; the comparing the current value with the current thresholds corresponding to each of the preset current ranges to determine the current range to which the current value belongs includes:

[0192] Step 202111, comparing the current value with the current thresholds corresponding to the preset current ranges to obtain a comparison result;

[0193] Step 202112: if the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, determine that the current value belongs to the first current range;

[0194] Step 202113: if the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, determine that the current value belongs to the second current range;

[0195] Step 202114: if the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

[0196] In steps 202111 to 202114, the current thresholds corresponding to the wiring harness stored in the vehicle include: a first current threshold, a second current threshold, a third current threshold and a fourth current threshold, the first current threshold < the second current threshold < the third current threshold < the fourth current threshold; the vehicle compares the current value with the current thresholds corresponding to each preset current range to obtain a comparison result; if the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, it is determined that the current value belongs to the first current range; if the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, it is determined that the current value belongs to the second current range; if the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

[0197] Exemplarily, the first current threshold is 7A, the second current threshold is 10A, the third current threshold is 30A, and the fourth current threshold is 60A, and the current range includes: a first current range greater than 7A and less than or equal to 10A, a second current range greater than 10A and less than or equal to 30A, and a third current range greater than 30A and less than or equal to 60A. If the vehicle detects that the current value of the wiring harness is 40A, the third current range can be determined as the current range corresponding to the current value; if the vehicle detects that the current value of the wiring harness is 20A, the second current range can be determined as the current range corresponding to the current value; if the vehicle detects that the current value of the wiring harness is 9A, the first current range can be determined as the current range corresponding to the current value.

[0198] Specifically, the steps of determining the current threshold and the preset current range corresponding to the current threshold include:

[0199] Step j, obtaining the operating temperature and wire diameter of the wire harness;

[0200] In this step, the vehicle obtains the working temperature and wire diameter of the wire harness. Specifically, the memory in the vehicle will store each wire harness and wire diameter in the vehicle. When the vehicle determines the wire harness that needs to be monitored, it can obtain the wire diameter of the wire harness in the memory; each wire harness is equipped with a corresponding temperature sensor, and the vehicle can read the value of the temperature sensor corresponding to the wire harness to determine the working temperature of the wire harness.

[0201] Step k, determining a target smoke curve corresponding to the wire harness based on the operating temperature and the wire diameter;

[0202] In this step, after obtaining the working temperature and wire diameter of the wire harness, the vehicle determines the target smoke curve corresponding to the wire harness from all pre-stored smoke curves corresponding to the wire harness based on the working temperature and wire diameter.

[0203] Specifically, the time-current curve corresponding to the wiring harness is a smoke curve. Wire harnesses with different wire diameters have different corresponding smoke curves, and wire harnesses at different operating temperatures have different corresponding smoke curves. Therefore, all pre-stored smoke curves corresponding to the wiring harness include smoke curves for multiple wire diameters and multiple operating temperatures. The vehicle can determine the target smoke curve corresponding to the wiring harness among all smoke curves based on the currently determined operating temperature and wire diameter.

[0204] Step 1: Based on the target smoke curve, determine a current threshold corresponding to the wiring harness and a preset current range corresponding to the current threshold.

[0205] In this step, the vehicle determines the current threshold corresponding to the wiring harness based on the smoke curve, and then determines the corresponding preset current range according to the current threshold.

[0206] Specifically, the smoke curve shows the current value of the wiring harness that changes with time and remains stable for a period of time under fault conditions, and the vehicle determines the current threshold value based on the current value that remains stable for a period of time in the smoke curve. For example, in a smoke curve, as time changes, the current value of the wiring harness remains stable for a period of time at 60A, 30A, 10A and 7A, respectively. At this time, the vehicle can determine that the current threshold value includes 60A, 30A, 10A and 7A; the preset current range includes: a first current range greater than 7A and less than or equal to 10A, a second current range greater than 10A and less than or equal to 30A, and a third current range greater than 30A and less than or equal to 60A

[0207] The vehicle of this embodiment determines the smoke curve according to the working temperature and wire diameter of the wiring harness, determines the current threshold according to the smoke curve, and then determines the current range according to the current threshold and the current value, thereby improving the accuracy of the determined current range, which in turn helps to accurately protect the wiring harness according to the current range and protection delay.

[0208] Please refer to Fig.10 , a tenth embodiment of the present application is proposed, and the difference between the tenth embodiment and the first to ninth embodiments is that a correspondence between different current ranges and different protection delays is established in advance;

[0209] The determining a target protection delay according to the current range includes:

[0210] Step 2022: Determine, according to the corresponding relationship, a protection delay corresponding to the current range to which the current value belongs, and set it as the target protection delay.

[0211] In this step, the vehicle pre-establishes a correspondence between different current ranges and different protection delays, determines the current range corresponding to the current value, and can determine the protection delay corresponding to the current range to which the current value belongs based on the correspondence, and sets the protection delay as the target protection delay.

[0212] Exemplarily, the corresponding relationship between different current ranges and different protection delays is: the first current range greater than 7A and less than or equal to 10A corresponds to a protection delay of 10s, the second current range greater than 10A and less than or equal to 30A corresponds to a protection delay of 1s, and the third current range greater than 30A and less than or equal to 60A corresponds to a protection delay of 1s. If the current value is 9A, it is determined that the current value is in the first current range, and the target protection delay is determined to be 10s.

[0213] The vehicle of this embodiment determines the protection delay corresponding to the current range to which the current value belongs based on the pre-established correspondence between different current ranges and different protection delays, and sets it as the target protection delay, thereby improving the efficiency of determining the protection delay, which in turn helps to improve the efficiency of subsequent protection of the wiring harness according to the current range and protection delay.

[0214] refer to Fig.11 , an eleventh embodiment of the present application is proposed, and the difference between the eleventh embodiment and the first to eleventh embodiments is that if the duration of the current value being within the current range is greater than the target protection delay, the wiring harness is protected, including:

[0215] Step 2031, continuously monitoring the current value of the wiring harness, and calculating the duration of time that the current value is within the current range;

[0216] In this step, the vehicle continuously monitors the current value of the wiring harness and calculates the duration that the current value is within the current range; it can be understood that a timer is provided in the vehicle to continuously monitor the current value of the wiring harness and calculate the duration that the current value is within the current range through the timer.

[0217] Step 2032: If the duration that the current value is within the current range is greater than the target protection delay, the wiring harness is protected.

[0218] In this step, the vehicle continuously compares the duration of time that the current value calculated by the timer is within the current range with the target protection delay. If it is determined that the duration of time that the current value is within the current range is greater than the target protection delay, the wiring harness is protected.

[0219] Step 2033: If the duration for which the current value is within the current range is not greater than the target protection delay, the wiring harness is not protected.

[0220] In this step, the vehicle continuously compares the duration of the current value calculated by the timer within the current range with the target protection delay. If it is determined that the duration of the current value within the current range is not greater than the target protection delay, the wiring harness is not protected.

[0221] Furthermore, when the vehicle is in the process of cyclically acquiring the current value of the wiring harness, if the current value obtained falls within other current ranges, the corresponding target protection delay needs to be updated. For example, if the current value is 9A, it is determined that the current value is in the current range of less than or equal to 10A and greater than 7A, and the target protection delay is determined to be 10s. The vehicle cyclically acquires the current value of the wiring harness to determine the duration of the current value being in the current range of less than or equal to 10A and greater than 7A; when the vehicle is in the process of cyclically acquiring the current value of the wiring harness, if the current value obtained is 20A, it is determined that the current value 20A is in the current range of less than or equal to 30A and greater than 10A, and at this time, the target protection delay needs to be changed to 1s, and the vehicle cyclically acquires the current value of the wiring harness to determine the duration of the current value being in the current range of less than or equal to 30A and greater than 10A. When it is determined that the duration of the current value being in the current range of less than or equal to 30A and greater than 10A is greater than the target protection delay 1s, the wiring harness is protected.

[0222] The vehicle of this embodiment continuously monitors the current value of the wiring harness and calculates the duration of the current value being within the current range; if the duration of the current value being within the current range is greater than the target protection delay, the wiring harness is protected. By determining the target protection delay of the current value and protecting the wiring harness only when the duration of the current value being within the current range is greater than the target protection delay, the problem of inaccurate judgment caused by instantaneous current mutations in the wiring harness due to some reasons is avoided, thereby improving the accuracy of wiring harness protection.

[0223] Furthermore, the method further comprises:

[0224] Step m, if the current value is not greater than the minimum current threshold, then the wiring harness is not protected;

[0225] In this step, after the vehicle detects the current value of the wiring harness, the current value is compared with the minimum current threshold in the current threshold set; if the current value is not greater than the minimum current threshold, the wiring harness is not protected. Exemplarily, the first current threshold includes 60A, 30A, 10A and 7A, where 7A is the maximum threshold. If the current value obtained by the vehicle is not greater than 7A, the wiring harness is not protected.

[0226] It is understandable that the current threshold set is set in advance in the vehicle, and each wiring harness corresponds to a current threshold set. The minimum current threshold in the current threshold set is a safety threshold. If the current value is not greater than the minimum current threshold, it means that there is no fault in the wiring harness and the wiring harness does not need to be protected.

[0227] Step n: if the current value is greater than the maximum current threshold, the wiring harness is protected.

[0228] In this step, after the vehicle detects the current value of the wiring harness, it compares the current value with the maximum current threshold in the current threshold set; if the current value is greater than the maximum current threshold, the wiring harness is immediately protected. Exemplarily, the first current threshold includes 60A, 30A, 10A and 7A, where 60A is the maximum threshold. If the current value obtained by the vehicle is greater than 60A, the wiring harness is immediately protected.

[0229] It is understandable that the maximum current threshold in the current threshold set is the severe fault threshold. If the current value is greater than the maximum current threshold, it means that there is a severe fault in the wiring harness. The vehicle does not need to consider the target protection delay, but immediately protects the wiring harness to avoid severe faults that further endanger vehicle safety.

[0230] Accordingly, reference Fig.12 , the embodiment of the present application further provides a wiring harness protection device, the wiring harness protection device comprising:

[0231] A first detection unit 1001 is used to detect the current value of the wiring harness;

[0232] A first determining unit 1002 is used to determine a corresponding current range according to the current value, and determine a target protection delay according to the current range;

[0233] The first protection unit 1003 is configured to protect the wiring harness if all current values ​​acquired within the target protection delay are within the current range.

[0234] Optionally, the first determining unit is further configured to:

[0235] The current range to which the current value belongs is determined according to the current value and a preset current range.

[0236] Optionally, the first determining unit is further configured to:

[0237] The step of determining the current range to which the current value belongs according to the current value and the preset current range includes:

[0238] The current value is compared with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs.

[0239] Optionally, the first determining unit is further configured to:

[0240] Comparing the current value with the current thresholds corresponding to the preset current ranges to obtain a comparison result;

[0241] If the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, it is determined that the current value belongs to the first current range;

[0242] If the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, it is determined that the current value belongs to the second current range;

[0243] If the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

[0244] Optionally, the first determining unit is further configured to:

[0245] The determining a target protection delay according to the current range includes:

[0246] According to the corresponding relationship, a protection delay corresponding to the current range to which the current value belongs is determined, and set as the target protection delay.

[0247] Optionally, the first determining unit is further configured to:

[0248] Obtaining the operating temperature and wire diameter of the wire harness;

[0249] Determining a target smoke curve corresponding to the wire harness based on the operating temperature and the wire diameter;

[0250] Based on the smoke curve, a current threshold set corresponding to the wiring harness and a preset current range corresponding to the current threshold are determined.

[0251] Optionally, the first protection unit is further configured to:

[0252] Within the target protection delay, cyclically acquiring current values ​​of the wiring harness, and comparing all the current values ​​with the current range;

[0253] If all the current values ​​are within the current range, the wiring harness is protected.

[0254] Optionally, the first protection unit is further configured to:

[0255] Comparing the current value with a minimum current threshold in the current threshold set;

[0256] If the current value is not greater than the minimum current threshold, the wiring harness is not protected.

[0257] Optionally, the first protection unit is further configured to:

[0258] Comparing the current value with a maximum current threshold in the current threshold set;

[0259] If the current value is greater than the maximum current threshold, the wiring harness is protected.

[0260] Optionally, the wiring harness protection device further includes an alarm unit, and the alarm unit is used to:

[0261] The wiring harness is powered off and a fault alarm is issued.

[0262] Optionally, the first protection unit is further configured to:

[0263] Acquire the number information of the wiring harness and the fault current value of the wiring harness;

[0264] The number information and the fault current value are stored in association with each other.

[0265] Optionally, the first determining unit is further configured to:

[0266] Detecting whether the fault alarm of the wiring harness is cleared;

[0267] If the fault alarm of the wiring harness is not cleared, the wiring harness is kept protected;

[0268] If the fault alarm of the wiring harness has been cleared, the step of determining a target protection delay according to the current value and the current threshold is performed.

[0269] This embodiment determines the target protection delay of the current value, and protects the wiring harness only when all current values ​​obtained within the target protection delay are within the current range, thereby avoiding the problem of inaccurate judgment caused by instantaneous current mutations in the wiring harness due to some reasons, and improving the accuracy of wiring harness protection.

[0270] Accordingly, reference Fig.13 , the embodiment of the present application also provides another wiring harness protection device, the wiring harness protection device comprising:

[0271] The second detection unit 2001 is used to detect the current value of the wiring harness;

[0272] A second determining unit 2002 is used to determine a corresponding current range according to the current value, and determine a target protection delay according to the current range;

[0273] The second protection unit 2003 is configured to protect the wiring harness if the duration for which the current value is within the current range is greater than the target protection delay.

[0274] Optionally, the second determining unit is further configured to:

[0275] The current range to which the current value belongs is determined according to the current value and a preset current range.

[0276] Optionally, the second determining unit is further configured to:

[0277] The step of determining the current range to which the current value belongs according to the current value and the preset current range includes:

[0278] The current value is compared with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs.

[0279] Optionally, the second determining unit is further configured to:

[0280] Comparing the current value with the current thresholds corresponding to the preset current ranges to obtain a comparison result;

[0281] If the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, it is determined that the current value belongs to the first current range;

[0282] If the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, it is determined that the current value belongs to the second current range;

[0283] If the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

[0284] Optionally, the second determining unit is further configured to:

[0285] The determining a target protection delay according to the current range includes:

[0286] According to the corresponding relationship, a protection delay corresponding to the current range to which the current value belongs is determined, and set as the target protection delay.

[0287] Optionally, the second protection unit is further used for:

[0288] continuously monitoring the current value of the wiring harness, and calculating the duration of time during which the current value is within the current range;

[0289] If the duration for which the current value is within the current range is greater than the target protection delay, the wiring harness is protected.

[0290] Optionally, the second protection unit is further used for:

[0291] If the duration for which the current value is within the current range is not greater than the target protection delay, the wiring harness is not protected.

[0292] Optionally, the second protection unit is further used for:

[0293] If the current value is not greater than the minimum current threshold, the wiring harness is not protected;

[0294] If the current value is greater than a maximum current threshold, the wiring harness is protected.

[0295] This embodiment determines the target protection delay of the current value, and protects the wiring harness only when the duration of the current value within the current range is greater than the target protection delay, thereby avoiding the problem of inaccurate judgment caused by instantaneous current mutations in the wiring harness due to some reasons, and improving the accuracy of wiring harness protection.

[0296] Accordingly, the embodiment of the present application also provides a vehicle, such as Fig.14 As shown, Fig.14 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle 1100 includes a processor 1101 having one or more processing cores, a memory 1102 having one or more computer-readable storage media, and a computer program stored in the memory 1102 and executable on the processor. The processor 1101 is electrically connected to the memory 1102. It will be understood by those skilled in the art that the vehicle structure shown in the figure does not constitute a limitation on the vehicle, and may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0297] The processor 1101 is the control center of the vehicle 1100, and uses various interfaces and lines to connect various parts of the entire vehicle 1100. By running or loading software programs and / or units stored in the memory 1102, and calling data stored in the memory 1102, it executes various functions of the vehicle 1100 and processes data, thereby monitoring the vehicle 1100 as a whole. The processor 1101 can be a processor CPU, a graphics processor GPU, a network processor (Network Processor, NP), etc., and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application.

[0298] In an embodiment of the present application, the processor 1101 in the vehicle 1100 will load the computer program corresponding to the process of one or more applications into the memory 1102 according to the following steps, and the processor 1101 will run the application stored in the memory 1102 to execute the wiring harness protection method.

[0299] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0300] Optional, such as Fig.14 As shown, the vehicle 1100 further includes: a touch screen 1103, a radio frequency circuit 1104, an audio circuit 1105, an input unit 1106, and a power supply 1107. The processor 1101 is electrically connected to the touch screen 1103, the radio frequency circuit 1104, the audio circuit 1105, the input unit 1106, and the power supply 1107, respectively. Those skilled in the art will appreciate that Fig.14 The vehicle structure shown in the figure does not constitute a limitation on the vehicle, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0301] The touch display screen 1103 can be used to display a graphical user interface and receive operation instructions generated by the user acting on the graphical user interface. The touch display screen 1103 may include a display panel and a touch panel. Among them, the display panel can be used to display information input by the user or information provided to the user and various graphical user interfaces of the vehicle, which can be composed of graphics, text, icons, videos and any combination thereof. Optionally, the display panel can be configured in the form of a liquid crystal display (LCD, Liquid Crystal Display), an organic light-emitting diode (OLED, Organic Light-Emitting Diode) and the like. The touch panel can be used to collect the user's touch operation on or near it (such as the user uses any suitable object or accessory such as a finger, a stylus, etc. on the touch panel or near the touch panel), and generate corresponding operation instructions, and the operation instructions execute the corresponding program. Optionally, the touch panel may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 1101, and can receive the command sent by the processor 1101 and execute it. The touch panel can cover the display panel. When the touch panel detects a touch operation on or near it, it is transmitted to the processor 1101 to determine the type of touch event, and then the processor 1101 provides a corresponding visual output on the display panel according to the type of touch event. In an embodiment of the present application, the touch panel and the display panel can be integrated into the touch display screen 1103 to realize the input and output functions. However, in some embodiments, the touch panel and the touch panel can be used as two independent components to realize the input and output functions. That is, the touch display screen 1103 can also be used as a part of the input unit 1106 to realize the input function.

[0302] The RF circuit 1104 may be used to send and receive RF signals to establish wireless communication with network devices or other vehicles through wireless communication, and to send and receive signals with network devices or other vehicles.

[0303] The audio circuit 1105 can be used to provide an audio interface between the user and the vehicle through a speaker and a microphone. The audio circuit 1105 can transmit the electrical signal converted from the received audio data to the speaker, which is converted into a sound signal for output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received by the audio circuit 1105 and converted into audio data, and then the audio data is output to the processor 1101 for processing, and then sent to another vehicle through the radio frequency circuit 1104, or the audio data is output to the memory 1102 for further processing. The audio circuit 1105 may also include an earphone jack to provide communication between an external headset and the vehicle.

[0304] The input unit 1106 may be used to receive input numbers, character information or user feature information (such as fingerprint, iris, facial information, etc.), and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0305] The power supply 1107 is used to supply power to various components of the vehicle 1100. Optionally, the power supply 1107 can be logically connected to the processor 1101 through a power management device, so that the power management device can manage charging, discharging, and power consumption. The power supply 1107 can also include one or more DC or AC power supplies, recharging devices, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0306] although Fig.14 Not shown, the vehicle 1100 may also include a camera, a sensor, a wireless fidelity module, a Bluetooth module, etc., which will not be described in detail here.

[0307] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0308] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0309] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0310] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0311] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0312] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. Although the descriptions of various embodiments in the embodiments of the present application have different focuses, for parts not described in detail in a certain embodiment, reference can be made to the relevant embodiments of other embodiments. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A wire harness protection method, characterized in that: The method comprises: Detect the current value of the wiring harness; Determining a corresponding current range according to the current value, and determining a target protection delay according to the current range; If all current values ​​acquired within the target protection delay are within the current range, the wiring harness is protected.

2. The wire harness protection method according to claim 1, characterized in that: The determining the corresponding current range according to the current value includes: The current range to which the current value belongs is determined according to the current value and a preset current range.

3. The wire harness protection method according to claim 2, characterized in that: The preset current range includes at least two; The step of determining the current range to which the current value belongs according to the current value and the preset current range includes: The current value is compared with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs.

4. The wire harness protection method according to claim 3, characterized in that: The current thresholds include: a first current threshold, a second current threshold, a third current threshold and a fourth current threshold; The comparing the current value with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs includes: Comparing the current value with the current thresholds corresponding to the preset current ranges to obtain a comparison result; If the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, it is determined that the current value belongs to the first current range; If the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, it is determined that the current value belongs to the second current range; If the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

5. The wire harness protection method according to claim 2, characterized in that: Establish the corresponding relationship between different current ranges and different protection delays in advance; The determining a target protection delay according to the current range includes: According to the corresponding relationship, a protection delay corresponding to the current range to which the current value belongs is determined, and set as the target protection delay.

6. The wire harness protection method according to claim 2, characterized in that: The method further comprises: Obtaining the operating temperature and wire diameter of the wire harness; Determining a target smoke curve corresponding to the wire harness based on the operating temperature and the wire diameter; Based on the target smoke curve, a current threshold corresponding to the wiring harness and a preset current range corresponding to the current threshold are determined.

7. The wire harness protection method according to claim 1, characterized in that: If all current values ​​acquired within the target protection delay are within the current range, protecting the wiring harness includes: Within the target protection delay, cyclically acquiring current values ​​of the wiring harness, and comparing all the current values ​​with the current range; If all the current values ​​are within the current range, the wiring harness is protected.

8. The wire harness protection method according to claim 2, characterized in that: After the current value of the wiring harness is detected, the method further comprises: comparing the current value with a minimum current threshold; If the current value is not greater than the minimum current threshold, the wiring harness is not protected.

9. The wire harness protection method according to claim 2, characterized in that: After the current value of the wiring harness is detected, the method further comprises: comparing the current value with a maximum current threshold; If the current value is greater than the maximum current threshold, the wiring harness is protected.

10. The wire harness protection method according to any one of claims 1 to 9, characterized in that: The protecting the wiring harness comprises: The wiring harness is powered off and a fault alarm is issued.

11. The wire harness protection method according to claim 10, characterized in that: After the fault alarm is performed, the following steps are included: Acquire the number information of the wiring harness and the fault current value of the wiring harness; The number information and the fault current value are stored in association with each other.

12. The wire harness protection method according to claim 10, characterized in that: After the current value of the wiring harness is detected, the method further comprises: Detecting whether the fault alarm of the wiring harness is cleared; If the fault alarm of the wiring harness is not cleared, the wiring harness is kept protected.

13. A wire harness protection method, characterized in that: The method comprises: Detect the current value of the wiring harness; Determining a corresponding current range according to the current value, and determining a target protection delay according to the current range; If the duration for which the current value is within the current range is greater than the target protection delay, the wiring harness is protected.

14. The wire harness protection method according to claim 13, characterized in that: The determining the corresponding current range according to the current value includes: The current range to which the current value belongs is determined according to the current value and a preset current range.

15. The wire harness protection method according to claim 14, characterized in that: The preset current range includes at least two; The step of determining the current range to which the current value belongs according to the current value and the preset current range includes: The current value is compared with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs.

16. The wire harness protection method according to claim 15, characterized in that: The current thresholds include: a first current threshold, a second current threshold, a third current threshold and a fourth current threshold; The comparing the current value with the current thresholds corresponding to the preset current ranges to determine the current range to which the current value belongs includes: Comparing the current value with the current thresholds corresponding to the preset current ranges to obtain a comparison result; If the comparison result is that the current value is greater than the first current threshold and less than or equal to the second current threshold, it is determined that the current value belongs to the first current range; If the comparison result is that the current value is greater than the second current threshold and less than or equal to the third current threshold, it is determined that the current value belongs to the second current range; If the comparison result is that the current value is greater than the third current threshold and less than or equal to the fourth current threshold, it is determined that the current value belongs to the third current range.

17. The wire harness protection method according to claim 14, characterized in that: Establish the corresponding relationship between different current ranges and different protection delays in advance; The determining a target protection delay according to the current range includes: According to the corresponding relationship, a protection delay corresponding to the current range to which the current value belongs is determined, and set as the target protection delay.

18. The wire harness protection method according to claim 13, characterized in that: If the duration of the current value being within the current range is greater than the target protection delay, protecting the wiring harness comprises: continuously monitoring the current value of the wiring harness, and calculating the duration of time during which the current value is within the current range; If the duration for which the current value is within the current range is greater than the target protection delay, the wiring harness is protected.

19. The wire harness protection method according to claim 18, characterized in that: After continuously monitoring the current value of the wiring harness and calculating the duration of the current value being within the current range, the method further includes: If the duration for which the current value is within the current range is not greater than the target protection delay, the wiring harness is not protected.

20. The wire harness protection method according to claim 13, characterized in that: The method further comprises: If the current value is not greater than the minimum current threshold, the wiring harness is not protected; If the current value is greater than a maximum current threshold, the wiring harness is protected.

21. A wire harness protection device, characterized in that: The wiring harness protection device comprises: A first detection unit, used for detecting a current value of the wiring harness; A first determining unit, configured to determine a corresponding current range according to the current value, and determine a target protection delay according to the current range; The first protection unit is configured to protect the wiring harness if all current values ​​acquired within the target protection delay are within the current range.

22. A wire harness protection device, characterized in that: The wiring harness protection device comprises: A second detection unit, used for detecting a current value of the wiring harness; a second determining unit, configured to determine a corresponding current range according to the current value, and determine a target protection delay according to the current range; The second protection unit is configured to protect the wiring harness if the duration for which the current value is within the current range is greater than the target protection delay.

23. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a plurality of computer programs, and the computer programs are suitable for being loaded by a processor to execute the steps of the method according to any one of claims 1-12 or 13-20.

24. A vehicle, characterized in that: The invention comprises a processor and a memory, wherein the memory stores a computer program; when the computer program is executed by the processor, the processor executes the steps of the method described in any one of claims 1 to 12 or 13 to 20.

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