A new energy vehicle control method, device, equipment and medium

Abstract

The present application discloses a new energy vehicle control method, device, equipment and medium. The method comprises the following steps: obtaining a plurality of sample energy harnesses corresponding to the new energy vehicle, detecting the melting temperature of the insulation layer corresponding to the sample energy harnesses; cutting off different numbers of copper wires in the sample energy harnesses and recording the first harness resistance; passing the same preset current through the sample energy harnesses at a predetermined temperature and measuring the saturation temperature corresponding to the sample energy harnesses; determining a first threshold resistance based on the first harness resistance corresponding to the first energy harness, and determining a second threshold resistance based on the first harness resistance corresponding to the second energy harness; detecting a target harness resistance when the new energy vehicle is started; and controlling the operating state of the new energy vehicle based on the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance. The method can effectively improve the safety of the operation of new energy vehicles and reduce the risk of accidents. The present application can be widely used in the field of vehicle technology.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a new energy vehicle control method, device, equipment and medium. Background Art

[0002] New energy vehicles (NEVs) use unconventional automotive fuels as their power source (or use conventional fuels with new onboard power units), integrating power control and drive technologies to create advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles, representing the future direction of automotive development. New energy vehicles are generally equipped with various electronic devices, and wiring harnesses are located between these devices. High-voltage wiring harnesses, for example, are crucial components for transmitting electrical energy within new energy vehicles.

[0003] In related technologies, during the operation of new energy vehicles, the high-voltage wire harness may break due to factors such as swinging and vibration (for example, one end of the high-voltage wire harness is set on the power system and the other end is set on the frame, which will swing when the vehicle is running). The broken wire core will cause the resistance of the high-voltage wire harness to increase, thereby affecting the performance of the vehicle. In extreme cases, high temperature and smoke will be generated, which will cause fire accidents, posing a major safety hazard.

[0004] Therefore, the problems existing in the existing technology still need to be solved and optimized. Summary of the Invention

[0005] The purpose of this application is to solve one of the technical problems existing in the related art to at least a certain extent.

[0006] To this end, an object of the embodiments of the present application is to provide a new energy vehicle control method, device, equipment and medium.

[0007] In order to achieve the above technical objectives, the technical solutions adopted in the embodiments of the present application include:

[0008] In one aspect, an embodiment of the present application provides a new energy vehicle control method, the method comprising:

[0009] Obtaining several sample energy harnesses corresponding to new energy vehicles and detecting the melting temperature of the insulation layers corresponding to the sample energy harnesses; wherein the sample energy harnesses are of the same model and each sample energy harness includes multiple copper wires;

[0010] Cutting off different numbers of copper wires in each of the sample energy bundles, and recording the first bundle resistance corresponding to each of the sample energy bundles after the copper wires are cut off;

[0011] At a predetermined temperature, the same preset current is passed through each sample energy bundle after the copper wire is cut, and the saturation temperature corresponding to each sample energy bundle after the copper wire is cut is measured;

[0012] Determining a first threshold resistance based on a first harness resistance corresponding to a first energy harness, and determining a second threshold resistance based on a first harness resistance corresponding to a second energy harness; wherein the first energy harness is a sample energy harness having a difference between the corresponding saturation temperature and the predetermined temperature equal to a preset threshold, and the second energy harness is a sample energy harness having a corresponding saturation temperature equal to a melting temperature of the insulation layer;

[0013] When the new energy vehicle is started, detecting a target harness resistance corresponding to a target energy harness in the new energy vehicle; wherein the target energy harness and the sample energy harness are of the same model;

[0014] The operating state of the new energy vehicle is controlled according to the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance.

[0015] In addition, the new energy vehicle control method according to the above embodiment of the present application may also have the following additional technical features:

[0016] Furthermore, in one embodiment of the present application, cutting off different numbers of copper wires in each of the sample energy bundles includes:

[0017] Get the preset cut-off interval ratio;

[0018] According to the cutting interval ratio, the cutting quantity corresponding to each of the sample energy bundles is determined, and the copper wires in each of the sample energy bundles are cut according to the cutting quantity.

[0019] Furthermore, in one embodiment of the present application, measuring the saturation temperature corresponding to each sample energy bundle after the copper wire is cut includes:

[0020] When current is applied, continuously measuring the temperature value corresponding to the sample energy harness;

[0021] If the temperature value remains unchanged within a first predetermined period of time, the current temperature value is determined as the saturation temperature corresponding to the sample energy bundle.

[0022] Furthermore, in one embodiment of the present application, the detecting a target harness resistance corresponding to a target energy harness in the new energy vehicle includes:

[0023] within a second predetermined time period, continuously detecting the resistance of the target energy harness in the new energy vehicle to obtain fluctuating resistance data;

[0024] A target harness resistance corresponding to the target energy harness is determined according to a maximum value in the fluctuating resistance data.

[0025] Furthermore, in one embodiment of the present application, controlling the operating state of the new energy vehicle according to the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance includes:

[0026] If the target harness resistance is less than the first threshold resistance, the new energy vehicle is started normally.

[0027] Furthermore, in one embodiment of the present application, controlling the operating state of the new energy vehicle according to the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance includes:

[0028] If the target harness resistance is greater than or equal to the first threshold resistance and less than the second threshold resistance, starting the new energy vehicle and limiting the operating power of the new energy vehicle;

[0029] Wiring harness abnormality information is displayed on the instrument panel of the new energy vehicle.

[0030] Furthermore, in one embodiment of the present application, controlling the operating state of the new energy vehicle according to the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance includes:

[0031] If the target harness resistance is greater than or equal to the second threshold resistance, stopping starting the new energy vehicle;

[0032] Wiring harness fault information is displayed on the instrument panel of the new energy vehicle.

[0033] On the other hand, an embodiment of the present application provides a new energy vehicle control device, the device comprising:

[0034] An acquisition unit is configured to acquire a plurality of sample energy harnesses corresponding to new energy vehicles and detect the melting temperature of the insulation layers corresponding to the sample energy harnesses; wherein the sample energy harnesses are of the same model and each sample energy harness includes a plurality of copper wires;

[0035] a recording unit, configured to cut off different numbers of copper wires in each of the sample energy bundles, and record the first bundle resistance corresponding to each of the sample energy bundles after the copper wires are cut off;

[0036] a measuring unit, configured to pass a current of the same preset magnitude through each sample energy bundle after the copper wire is cut at a predetermined temperature, and measure a saturation temperature corresponding to each sample energy bundle after the copper wire is cut;

[0037] a processing unit, configured to determine a first threshold resistance based on a first harness resistance corresponding to a first energy harness, and to determine a second threshold resistance based on a first harness resistance corresponding to a second energy harness; wherein the first energy harness is a sample energy harness having a difference between the corresponding saturation temperature and the predetermined temperature equal to a preset threshold value, and the second energy harness is a sample energy harness having a corresponding saturation temperature equal to a melting temperature of the insulation layer;

[0038] a detection unit, configured to detect a target harness resistance corresponding to a target energy harness in the new energy vehicle when the new energy vehicle is started; wherein the target energy harness and the sample energy harness are of the same model;

[0039] An execution unit is used to control the operating state of the new energy vehicle according to the relationship between the target wiring harness resistance and the first threshold resistance and the second threshold resistance.

[0040] In another aspect, an embodiment of the present application provides a computer device, including:

[0041] at least one processor;

[0042] at least one memory for storing at least one program;

[0043] When the at least one program is executed by the at least one processor, the at least one processor implements the above-mentioned new energy vehicle control method.

[0044] On the other hand, an embodiment of the present application further provides a computer-readable storage medium, which stores a program executable by a processor. When the program executable by the processor is executed by the processor, it is used to implement the above-mentioned new energy vehicle control method.

[0045] The advantages and benefits of this application will be partially given in the following description, and partially become apparent from the following description, or learned through practice of this application:

[0046] The embodiment of the present application discloses a new energy vehicle control method, which obtains several sample energy harnesses corresponding to the new energy vehicle and detects the melting temperature of the insulation layer corresponding to the sample energy harnesses; wherein the model of each of the sample energy harnesses is the same, and each of the sample energy harnesses includes multiple copper wires; cuts off different numbers of copper wires in each of the sample energy harnesses, and records the first harness resistance corresponding to each sample energy harness after the copper wires are cut off; at a predetermined temperature, the same preset current is passed through each sample energy harness after the copper wires are cut off, and the saturation temperature corresponding to each sample energy harness after the copper wires are cut off is measured; and a first threshold current is determined based on the first harness resistance corresponding to the first energy harness. Resistance, and determining a second threshold resistance based on the first harness resistance corresponding to the second energy harness; wherein the first energy harness is a sample energy harness whose corresponding difference between the saturation temperature and the predetermined temperature is equal to the preset threshold, and the second energy harness is a sample energy harness whose corresponding saturation temperature is equal to the melting temperature of the insulation layer; when the new energy vehicle is started, detecting the target harness resistance corresponding to the target energy harness in the new energy vehicle; wherein the target energy harness and the sample energy harness are of the same model; and controlling the operating state of the new energy vehicle based on the relationship between the target harness resistance and the first and second threshold resistances. This method experimentally measures the resistance and temperature data corresponding to the energy harness of the new energy vehicle when the copper wire is broken. During startup, hierarchical control processing is implemented based on the resistance of the energy harness, which can effectively improve the safety of the new energy vehicle and reduce the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following introduction is made to the drawings of the embodiments of the present application or the related technical solutions in the prior art. It should be understood that the drawings introduced below are only for the convenience of clearly describing some embodiments of the technical solutions of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative work.

[0048] Figure 1 A schematic flow chart of a new energy vehicle control method provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of defining a working area based on the relationship between the harness resistance and saturation temperature of an energy harness provided in an embodiment of the present application;

[0050] Figure 3 This is a schematic structural diagram of a new energy vehicle control device provided in an embodiment of the present application;

[0051] Figure 4A schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are merely examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0053] It will be understood that the terms "first", "second", etc. used in this application may be used herein to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0054] The terms "at least one", "plurality", "each", "any", etc. used in this application include "at least one", "two" or more, "plurality" or "each", "any" or "any one", "each" or "any one" as used herein.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0056] New energy vehicles (NEVs) use unconventional automotive fuels as their power source (or use conventional fuels with new onboard power units), integrating power control and drive technologies to create advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles, representing the future direction of automotive development. New energy vehicles are generally equipped with various electronic devices, and wiring harnesses are located between these devices. High-voltage wiring harnesses, for example, are crucial components for transmitting electrical energy within new energy vehicles.

[0057] In related technologies, during the operation of new energy vehicles, the high-voltage wire harness may break due to factors such as swinging and vibration (for example, one end of the high-voltage wire harness is set on the power system and the other end is set on the frame, which will swing when the vehicle is running). The broken wire core will cause the resistance of the high-voltage wire harness to increase, thereby affecting the performance of the vehicle. In extreme cases, high temperature and smoke will be generated, which will cause fire accidents, posing a major safety hazard.

[0058] In view of this, a new energy vehicle control method is provided in an embodiment of the present application. The method obtains several sample energy harnesses corresponding to the new energy vehicle and detects the melting temperature of the insulation layer corresponding to the sample energy harnesses; wherein the model of each of the sample energy harnesses is the same, and each of the sample energy harnesses includes multiple copper wires; cuts off a different number of copper wires in each of the sample energy harnesses, and records the first harness resistance corresponding to each sample energy harness after the copper wires are cut off; at a predetermined temperature, the same preset current is passed through each sample energy harness after the copper wires are cut off, and the saturation temperature corresponding to each sample energy harness after the copper wires are cut off is measured; and according to the first harness resistance corresponding to the first energy harness, the first harness resistance corresponding to the first energy harness is determined. A method for determining a first threshold resistance and a second threshold resistance based on the first harness resistance corresponding to the second energy harness; wherein the first energy harness is a sample energy harness corresponding to a predetermined temperature with a difference between the saturation temperature and the predetermined temperature equal to the preset threshold, and the second energy harness is a sample energy harness corresponding to a predetermined temperature with a saturation temperature equal to the melting temperature of the insulation layer; when the new energy vehicle is started, detecting the target harness resistance corresponding to the target energy harness in the new energy vehicle; wherein the target energy harness and the sample energy harness are of the same model; and controlling the operating state of the new energy vehicle based on the relationship between the target harness resistance and the first and second threshold resistances. This method experimentally measures the resistance and temperature data corresponding to the energy harness of the new energy vehicle in the event of a copper wire breakage. During startup, hierarchical control processing is implemented based on the resistance of the energy harness, effectively improving the safety of the new energy vehicle and reducing the risk of accidents.

[0059] Please refer to Figure 1 , Figure 1 This is a flow chart of a new energy vehicle control method provided by an embodiment of the present application, referring to Figure 1 , a new energy vehicle control method provided in this application includes but is not limited to:

[0060] Step 110: Obtain several sample energy harnesses corresponding to new energy vehicles, and detect the melting temperature of the insulation layers corresponding to the sample energy harnesses; wherein the sample energy harnesses are of the same model and each sample energy harness includes multiple copper wires;

[0061] Step 120: Cutting off different numbers of copper wires in each of the sample energy bundles, and recording the first bundle resistance corresponding to each of the sample energy bundles after the copper wires are cut off;

[0062] Step 130: Passing the same preset current through each sample energy bundle after the copper wire is cut at a predetermined temperature, and measuring the saturation temperature corresponding to each sample energy bundle after the copper wire is cut;

[0063] Step 140: Determine a first threshold resistance based on a first harness resistance corresponding to the first energy harness, and determine a second threshold resistance based on a first harness resistance corresponding to the second energy harness; wherein the first energy harness is a sample energy harness having a difference between the saturation temperature and the predetermined temperature equal to a preset threshold, and the second energy harness is a sample energy harness having a saturation temperature equal to the melting temperature of the insulation layer;

[0064] Step 150: When the new energy vehicle is started, detecting a target harness resistance corresponding to a target energy harness in the new energy vehicle; wherein the target energy harness and the sample energy harness are of the same model;

[0065] Step 160 : Control the operating state of the new energy vehicle according to the relationship between the target harness resistance and the first threshold resistance and the second threshold resistance.

[0066] In an embodiment of the present application, a new energy vehicle control method is provided. The method experimentally measures the resistance and temperature data corresponding to the energy harness of the new energy vehicle when the copper wire is broken. At startup, graded control processing is implemented according to the resistance of the energy harness, which can effectively improve the safety of the operation of the new energy vehicle and reduce the risk probability of accidents.

[0067] The new energy vehicle control method provided in the embodiment of the present application can obtain the corresponding sample energy harness in advance for the new energy vehicle to be controlled. The sample energy harness here refers to a harness of the same model as the energy harness used for the new energy vehicle. In the embodiment of the present application, in order to distinguish, the energy harness actually configured in the new energy vehicle can be recorded as the target energy harness. The number of sample energy harnesses can be multiple, and they are all the same model as the target energy harness. The sample energy harness can include multiple copper wires. In the embodiment of the present application, there is no restriction on the specific number of copper wires, and it can be set according to actual needs.

[0068] In an embodiment of the present application, for each sample energy bundle, a different number of copper wires can be cut off, thereby simulating the situation in which the energy bundle has a breakage problem. Specifically, in an embodiment of the present application, the number of copper wires cut off in each sample energy bundle can be determined according to actual needs. For example, in some embodiments, a cutting interval ratio can be pre-set, such as 1%. The cutting interval ratio can be used to limit the ratio of the difference in the number of copper wires cut off in similar sample energy bundles to the number of original copper wires. Based on the cutting interval ratio, the number of copper wires to be cut off corresponding to each sample energy bundle can be determined, and then the copper wire cutting process can be performed.

[0069] For example, assuming that the current sample energy harness includes 1,500 copper wires, then for each sample energy harness, 15 more copper wires can be cut off in sequence. For example, the first sample energy harness remains intact as a control; the second sample energy harness cuts off 15 copper wires, the third sample energy harness cuts off 30 copper wires, and the fourth sample energy harness cuts off 45 copper wires, thereby constructing different degrees of breakage.

[0070] Of course, it is understandable that in the embodiment of the present application, there is no restriction on the size of the cut-off interval ratio, which can be flexibly set according to actual needs.

[0071] In an embodiment of the present application, for each sample energy harness, the corresponding resistance after the copper wire is cut off can be detected and recorded, which is recorded as the first harness resistance. Then, at a predetermined temperature, the same preset current can be passed through each sample energy harness after the copper wire is cut off. The predetermined temperature here can be the ambient temperature when the vehicle is running under normal circumstances, such as 25 degrees Celsius, 35 degrees Celsius, etc. The preset current can be the rated working current when the vehicle is running under normal circumstances. This application does not impose any restrictions on this. When the current is passed through, the saturation temperature corresponding to each sample energy harness can be measured. Here, for the original sample energy harness (i.e., the sample energy harness without cutting the copper wire), its corresponding first harness resistance and saturation temperature can also be recorded as a comparison reference. This application does not impose any restrictions on this.

[0072] It is understandable that for each sample energy harness, the more broken copper wires there are, the higher the resistance is, and when current is applied, the corresponding saturation temperature is generally higher. Therefore, in the embodiment of the present application, two threshold resistances can be determined based on this characteristic, respectively recorded as the first threshold resistance and the second threshold resistance. The first threshold resistance can be the resistance when the saturation temperature corresponding to the energy harness of the new energy vehicle does not rise significantly, and the second threshold resistance can be the resistance when the saturation temperature corresponding to the energy harness of the new energy vehicle will damage itself and surrounding components, for example, it can be the resistance corresponding to the melting of the insulation layer.

[0073] Specifically, in an embodiment of the present application, a temperature change threshold can be pre-set, and the size of the preset threshold can be relatively small. Then, the difference between the saturation temperature corresponding to each sample energy bundle and the predetermined temperature can be compared. If the difference corresponding to a certain sample energy bundle is equal to the preset threshold, the sample energy bundle can be determined as the first energy bundle, and the first bundle resistance corresponding to the first energy bundle is determined as the first threshold resistance. In addition, it is also possible to query which sample energy bundle has a saturation temperature equal to the melting temperature of the insulation layer corresponding to the sample energy bundle, determine the sample energy bundle as the second energy bundle, and then determine the first bundle resistance corresponding to the second energy bundle as the second threshold resistance. Here, the melting temperature of the insulation layer corresponding to the sample energy bundle can be measured in advance through experiments.

[0074] In the embodiment of the present application, after determining the first and second threshold resistances, the harness resistance corresponding to the target energy harness in the new energy vehicle can be detected when the new energy vehicle is started, and recorded as the target harness resistance. The operating state of the new energy vehicle can then be controlled based on the relationship between the target harness resistance and the first and second threshold resistances.

[0075] For example, in some embodiments, if the target harness resistance is less than the first threshold resistance, the new energy vehicle is started normally.

[0076] In an embodiment of the present application, if the target harness resistance is less than the first threshold resistance, it means that the new energy vehicle is likely to have no energy harness breakage problem, or the degree of breakage is very small and does not affect the normal operation of the vehicle. Therefore, in this case, the new energy vehicle can be started normally.

[0077] In some embodiments, if the target harness resistance is greater than or equal to the first threshold resistance and less than the second threshold resistance, the new energy vehicle is started and the operating power of the new energy vehicle is limited;

[0078] Wiring harness abnormality information is displayed on the instrument panel of the new energy vehicle.

[0079] In the embodiment of the present application, if the target harness resistance is greater than or equal to the first threshold resistance and less than the second threshold resistance, it means that the new energy vehicle is likely to have a broken energy harness problem, which will cause the target energy harness to heat up abnormally when it is working. However, since the target harness resistance is still less than the second threshold resistance, it means that the magnitude of the abnormal temperature rise is likely small and has not reached the level of affecting the insulation layer. At this time, the new energy vehicle can be started, but due to its potential safety hazards, in order to reduce the probability of accidents, the operating power of the new energy vehicle can be limited. For example, the use of some non-essential components (such as air conditioning, audio), etc. can be restricted. In addition, the harness abnormality information can be displayed on the dashboard of the new energy vehicle to remind the driver that inspection and maintenance are required.

[0080] In some embodiments, if the target harness resistance is greater than or equal to the second threshold resistance, stopping starting the new energy vehicle;

[0081] Wiring harness fault information is displayed on the instrument panel of the new energy vehicle.

[0082] In an embodiment of the present application, if the target wiring harness resistance is greater than or equal to the second threshold resistance, it indicates that the new energy vehicle is likely to have a broken energy harness problem, and the abnormal temperature rise is likely to be large, reaching a level that affects the insulation layer. At this time, if the vehicle is started, it is likely to generate high temperatures and smoke, which can easily cause a fire accident. Therefore, in this case, the new energy vehicle can be stopped, and the wiring harness fault information can be displayed on the instrument panel of the new energy vehicle to remind the driver that inspection and repair are required.

[0083] In some embodiments, measuring the saturation temperature of each sample energy bundle after the copper wire is cut includes:

[0084] When current is applied, continuously measuring the temperature value corresponding to the sample energy harness;

[0085] If the temperature value remains unchanged within a first predetermined period of time, the current temperature value is determined as the saturation temperature corresponding to the sample energy bundle.

[0086] In the embodiment of the present application, when determining the saturation temperature corresponding to the sample energy bundle, it is easy to understand that after the current is passed, the temperature of the sample energy bundle will rise due to the thermal effect of the resistor. At this time, the temperature value will change. If the measured temperature value is directly used as the saturation temperature corresponding to the sample energy bundle, there is an inaccuracy problem. In the embodiment of the present application, the temperature value corresponding to the sample energy bundle can be continuously detected to monitor its temperature change. If it no longer changes within a period of time (i.e., the first predetermined time length) (or the change is so small that it can be ignored), it can be considered that the bundle has reached a stable temperature state. At this time, the currently measured temperature value can be determined as the saturation temperature corresponding to the sample energy bundle. In this way, the accuracy of the saturation temperature determination can be improved.

[0087] In some embodiments, detecting a target harness resistance corresponding to a target energy harness in the new energy vehicle includes:

[0088] within a second predetermined time period, continuously detecting the resistance of the target energy harness in the new energy vehicle to obtain fluctuating resistance data;

[0089] A target harness resistance corresponding to the target energy harness is determined according to a maximum value in the fluctuating resistance data.

[0090] In the embodiment of the present application, when determining the target harness resistance corresponding to the target energy harness, the target energy harness itself may be shaken, and therefore the measured target harness resistance may fluctuate. In the embodiment of the present application, the resistance of the target energy harness can be continuously detected, for example, by continuously measuring for a period of time (i.e., a second predetermined period of time) to obtain fluctuating resistance data.

[0091] It is understandable that in conventional resistance measurement applications, the average of the fluctuating resistance data over a period of time is often used as the final result. However, in an embodiment of the present application, if the actual value of the target harness resistance is larger than the measured value, it is easy to make a misjudgment. For example, the actual value of the target harness resistance is greater than the second threshold resistance, but the measured value obtained by averaging is less than the second threshold resistance, which will cause the new energy vehicle with hidden dangers to be mistakenly started. Therefore, in order to ensure the operational safety of new energy vehicles as much as possible, the maximum value in the fluctuating resistance data can be taken as the target harness resistance corresponding to the target energy harness. In this way, the safety risks caused by inaccurate single measurements or shaking of the target energy harness can be reduced, and accidents can be prevented as much as possible.

[0092] Below, in combination with specific embodiments, an implementation case of the new energy vehicle control method provided in the embodiments of the present application is described and introduced.

[0093] Please refer to Figure 2 , Figure 2 A schematic diagram of defining a working area based on the relationship between the harness resistance and saturation temperature of an energy harness provided in an embodiment of the present application is shown. In an embodiment of the present application, for a new energy vehicle, the relationship between the harness resistance and saturation temperature can be tested using a large number of sample energy harnesses to obtain relevant test data. Then, the first threshold resistance and the second threshold resistance can be determined using the aforementioned method. Figure 2 As shown, Figure 2 It can be determined that the resistance value of the first threshold resistor is a, and the resistance value of the second threshold resistor is b. In particular, in the embodiment of the present application, a third threshold resistor b1 can be determined between the first threshold resistor and the second threshold resistor.

[0094] Next, while the new energy vehicle is operating, the target harness resistance corresponding to its target energy harness is detected. If the target harness resistance is less than a first threshold resistance, the vehicle is determined to be in a safe zone and can be used normally. If the target harness resistance is between the first and third threshold resistances, the vehicle is determined to be in a power-restricted zone, indicating a low risk level. In this case, the user can be prompted to check, and the vehicle information is automatically reported to the vehicle manufacturer's backend to facilitate data aggregation. Furthermore, appropriate power restrictions can be implemented, such as prohibiting the use of entertainment devices. If the target harness resistance is between the third and second threshold resistances, the vehicle is determined to be in a power-restricted zone, indicating a medium risk level. In this case, the user can be prompted to shut down the vehicle as soon as possible, contact a nearby repair technician for inspection and repair, and the vehicle information is automatically reported to the vehicle manufacturer's backend. In this case, further power restrictions can be implemented, such as limiting the vehicle's powertrain output limit and shutting down components such as the air conditioner and cooling pump to minimize the probability of abnormal temperature rise. If the target harness resistance is greater than the third threshold resistance, the vehicle is determined to be in a prohibited start zone, indicating a high risk level. If the target wiring harness resistance is found to be greater than the third threshold resistance while the vehicle is driving, the user can be reminded to stop quickly and turn on relevant warning lights and escape routes (such as doors, sunroof, etc.) to prevent fire from causing casualties.

[0095] The following describes a new energy vehicle control device proposed according to an embodiment of the present application with reference to the accompanying drawings.

[0096] Reference Figure 3 The new energy vehicle control device proposed in the embodiment of the present application includes:

[0097] An acquisition unit 210 is configured to acquire a plurality of sample energy harnesses corresponding to new energy vehicles and detect the melting temperature of the insulation layers corresponding to the sample energy harnesses; wherein the sample energy harnesses are of the same model and each sample energy harness includes a plurality of copper wires;

[0098] A recording unit 220 is configured to cut off different numbers of copper wires in each of the sample energy bundles and record the first bundle resistance corresponding to each of the sample energy bundles after the copper wires are cut off;

[0099] The measuring unit 230 is configured to pass the same preset current through each sample energy bundle after the copper wire is cut at a predetermined temperature, and measure the saturation temperature corresponding to each sample energy bundle after the copper wire is cut;

[0100] a processing unit 240 configured to determine a first threshold resistance based on a first harness resistance corresponding to a first energy harness, and to determine a second threshold resistance based on a first harness resistance corresponding to a second energy harness; wherein the first energy harness is a sample energy harness having a difference between the saturation temperature and the predetermined temperature equal to a preset threshold value, and the second energy harness is a sample energy harness having a saturation temperature equal to a melting temperature of the insulation layer;

[0101] a detection unit 250 configured to detect a target harness resistance corresponding to a target energy harness in the new energy vehicle when the new energy vehicle is started; wherein the target energy harness and the sample energy harness are of the same model;

[0102] The execution unit 260 is configured to control the operating state of the new energy vehicle according to a magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance.

[0103] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0104] Reference Figure 4 , an embodiment of the present application provides a computer device, including:

[0105] at least one processor 310;

[0106] at least one memory 320, for storing at least one program;

[0107] When at least one program is executed by at least one processor 310, the at least one processor 310 implements Figure 1 A new energy vehicle control method is shown.

[0108] Similarly, the contents of the above method embodiments are applicable to the present computer device embodiment. The functions specifically implemented by the present computer device embodiment are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0109] An embodiment of the present application also provides a computer-readable storage medium, which stores a program executable by the processor 310. The program executable by the processor 310 is used to execute the above-mentioned new energy vehicle control method when executed by the processor 310.

[0110] The present application also discloses a computer-readable storage medium in which a program executable by a processor is stored. When the program is executed by the processor, it is used to implement the following Figure 1 An embodiment of a new energy vehicle control method is shown.

[0111] It is understandable that if Figure 1 The contents of the embodiment of a new energy vehicle control method shown in FIG. 1 are applicable to the embodiment of this computer-readable storage medium. The functions specifically implemented by this computer-readable storage medium embodiment are similar to those in FIG. Figure 1 The embodiment of the new energy vehicle control method shown is the same as that of the embodiment of the new energy vehicle control method shown in FIG. Figure 1 The beneficial effects achieved by the embodiment of the new energy vehicle control method shown are also the same.

[0112] In some optional embodiments, the functions / operations mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the functions / operations involved, the two boxes shown in succession may actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiments presented and described in the flow chart of the present application are provided in an exemplary manner for the purpose of providing a more comprehensive understanding of the technology. The disclosed method is not limited to the operations and logic flows presented herein. Optional embodiments are contemplated in which the order of the various operations is changed and the sub-operations described as a part of a larger operation are performed independently.

[0113] In addition, although the present application is described in the context of functional modules, it should be understood that, unless otherwise stated, one or more of the functions and / or features can be integrated into a single physical system and / or software module, or one or more functions and / or features can be implemented in separate physical systems or software modules. It is also understood that a detailed discussion of the actual implementation of each module is not necessary for understanding the present application. More specifically, given the properties, functions, and internal relationships of the various functional modules in the system disclosed herein, the actual implementation of the module will be understood within the conventional skills of an engineer. Therefore, those skilled in the art can implement the present application as set forth in the claims using ordinary techniques without undue experimentation. It is also understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present application, which is determined by the full scope of the appended claims and their equivalents.

[0114] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0115] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch instructions from and execute instructions on an instruction execution system, system, or device). For purposes of this specification, a "computer-readable medium" can be any system that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, system, or device.

[0116] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic systems), a portable computer disk cartridge (magnetic systems), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic system, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0117] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0118] In the above description of this specification, reference to the terms "one embodiment / example," "another embodiment / example," or "certain embodiments / examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0119] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

[0120] The above is a detailed description of the preferred implementation of the present application, but the present application is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

[0121] In the description of this specification, reference to the terms "one embodiment," "another embodiment," or "certain embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0122] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A new energy vehicle control method, characterized in that: The method comprises: Obtaining several sample energy harnesses corresponding to new energy vehicles and detecting the melting temperature of the insulation layers corresponding to the sample energy harnesses; wherein the sample energy harnesses are of the same model and each sample energy harness includes multiple copper wires; Cutting off different numbers of copper wires in each of the sample energy bundles, and recording the first bundle resistance corresponding to each of the sample energy bundles after the copper wires are cut off; At a predetermined temperature, the same preset current is passed through each sample energy bundle after the copper wire is cut, and the saturation temperature corresponding to each sample energy bundle after the copper wire is cut is measured; Determining a first threshold resistance based on a first harness resistance corresponding to a first energy harness, and determining a second threshold resistance based on a first harness resistance corresponding to a second energy harness; wherein the first energy harness is a sample energy harness having a difference between the corresponding saturation temperature and the predetermined temperature equal to a preset threshold, and the second energy harness is a sample energy harness having a corresponding saturation temperature equal to a melting temperature of the insulation layer; When the new energy vehicle is started, detecting a target harness resistance corresponding to a target energy harness in the new energy vehicle; wherein the target energy harness and the sample energy harness are of the same model; The operating state of the new energy vehicle is controlled according to the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance.

2. A new energy vehicle control method according to claim 1, characterized in that: The step of cutting off different numbers of copper wires in each of the sample energy harnesses comprises: Get the preset cut-off interval ratio; According to the cutting interval ratio, the cutting quantity corresponding to each of the sample energy bundles is determined, and the copper wires in each of the sample energy bundles are cut according to the cutting quantity.

3. A new energy vehicle control method according to claim 1, characterized in that: The measuring of the saturation temperature of each sample energy bundle corresponding to the copper wire after the copper wire is cut off includes: When current is applied, continuously measuring the temperature value corresponding to the sample energy harness; If the temperature value remains unchanged within a first predetermined period of time, the current temperature value is determined as the saturation temperature corresponding to the sample energy bundle.

4. A new energy vehicle control method according to claim 1, characterized in that: The detecting a target harness resistance corresponding to a target energy harness in the new energy vehicle includes: within a second predetermined time period, continuously detecting the resistance of the target energy harness in the new energy vehicle to obtain fluctuating resistance data; A target harness resistance corresponding to the target energy harness is determined according to a maximum value in the fluctuating resistance data.

5. A new energy vehicle control method according to any one of claims 1 to 4, characterized in that: The controlling the operating state of the new energy vehicle according to the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance includes: If the target harness resistance is less than the first threshold resistance, the new energy vehicle is started normally.

6. A new energy vehicle control method according to any one of claims 1-4, characterized in that: The controlling the operating state of the new energy vehicle according to the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance includes: If the target harness resistance is greater than or equal to the first threshold resistance and less than the second threshold resistance, starting the new energy vehicle and limiting the operating power of the new energy vehicle; Wiring harness abnormality information is displayed on the instrument panel of the new energy vehicle.

7. A new energy vehicle control method according to any one of claims 1 to 4, characterized in that: The controlling the operating state of the new energy vehicle according to the magnitude relationship between the target harness resistance and the first threshold resistance and the second threshold resistance includes: If the target harness resistance is greater than or equal to the second threshold resistance, stopping starting the new energy vehicle; Wiring harness fault information is displayed on the instrument panel of the new energy vehicle.

8. A new energy vehicle control device, characterized in that: The device comprises: An acquisition unit is configured to acquire a plurality of sample energy harnesses corresponding to new energy vehicles and detect the melting temperature of the insulation layers corresponding to the sample energy harnesses; wherein the sample energy harnesses are of the same model and each sample energy harness includes a plurality of copper wires; a recording unit, configured to cut off different numbers of copper wires in each of the sample energy bundles, and record the first bundle resistance corresponding to each of the sample energy bundles after the copper wires are cut off; a measuring unit, configured to pass a current of the same preset magnitude through each sample energy bundle after the copper wire is cut at a predetermined temperature, and measure a saturation temperature corresponding to each sample energy bundle after the copper wire is cut; a processing unit, configured to determine a first threshold resistance based on a first harness resistance corresponding to a first energy harness, and to determine a second threshold resistance based on a first harness resistance corresponding to a second energy harness; wherein the first energy harness is a sample energy harness having a difference between the corresponding saturation temperature and the predetermined temperature equal to a preset threshold value, and the second energy harness is a sample energy harness having a corresponding saturation temperature equal to a melting temperature of the insulation layer; a detection unit, configured to detect a target harness resistance corresponding to a target energy harness in the new energy vehicle when the new energy vehicle is started; wherein the target energy harness and the sample energy harness are of the same model; An execution unit is used to control the operating state of the new energy vehicle according to the relationship between the target wiring harness resistance and the first threshold resistance and the second threshold resistance.

9. A computer device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements a new energy vehicle control method as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a program executable by a processor, characterized in that: The processor-executable program is used to implement a new energy vehicle control method as described in any one of claims 1 to 7 when executed by the processor.

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