High voltage isolation fault notification system and method

Abstract

A high voltage isolation fault notification system and method are disclosed. A high voltage isolation fault notification system is provided for providing a notification of a high voltage isolation fault being detected that is observable outside of a vehicle. The high voltage isolation fault notification system can include a monitoring component, a fault detection component, a notification component, and a visual and audible alert. A method for providing a notification of a high voltage isolation fault being detected that is observable outside of a vehicle using the high voltage isolation fault notification system is also provided.

Description

Technical Field

[0001] This disclosure relates to a high-voltage isolation fault notification system. More specifically, this disclosure relates to providing notification of a detected high-voltage isolation fault that can be observed from outside a vehicle. Background Technology

[0002] Growing concerns about environmental pollution and the depletion of fossil fuels have driven increasing demand for electric vehicles (EVs) and hybrid electric vehicles (HEVs). These vehicles offer a cleaner and more sustainable mode of transportation, but they also present unique safety challenges, particularly regarding the high-voltage systems they employ. Unlike traditional internal combustion engine vehicles, EVs and HEVs utilize high-voltage batteries and electrical components that can pose significant risks if not properly managed. These risks include electric shock to passengers and first responders in the event of an accident, and potential fire hazards due to short circuits or damage to high-voltage cables.

[0003] To mitigate these risks, robust safety systems in EVs and HEVs are essential, capable of continuously monitoring the integrity of high-voltage systems and effectively alerting users in the event of a high-voltage isolation failure. Current high-voltage failure notification systems for electric vehicles have significant limitations—they only alert users when they are already inside the vehicle, such as via the generation of a malfunction indicator lamp (MIL), human-machine interface (HMI) message, or diagnostic fault code (DTC). If a failure occurs when the vehicle is not occupied, the driver or technician may approach the vehicle unknowingly, potentially resulting in electric shock. This inherent notification delay in existing technology poses a safety risk to anyone interacting with the vehicle, including service personnel and pedestrians.

[0004] Therefore, there is a need to address the deficiencies in existing technologies. What is needed is a system that can clearly notify a user of a high-voltage isolation fault, observable from outside the vehicle. What is needed is a system that mitigates the risk of electric shock by notifying the user of a detected high-voltage isolation fault before contact with the vehicle. What is needed is a system and method that provides an audiovisual alarm that can be observed from outside the vehicle when a high-voltage isolation fault is detected. Summary of the Invention

[0005] This disclosure advantageously provides a system that clearly notifies a user of a high-voltage isolation fault, observable from outside the vehicle. This disclosure advantageously provides a system for mitigating the risk of electric shock by notifying the user of a detected high-voltage isolation fault before contact with the vehicle. This disclosure advantageously provides a system and method for providing an audiovisual alarm observable from outside the vehicle when a high-voltage isolation fault is detected.

[0006] Accordingly, this disclosure may be characterized by a high-voltage isolation fault notification system for a vehicle, the system comprising a monitoring component, a fault detection component, and a notification component. The monitoring component monitors the voltage conditions of the high-voltage system and the chassis. The fault detection component determines whether the voltage condition between the high-voltage system and the chassis indicates a high-voltage isolation fault. The notification component, upon detecting a high-voltage isolation fault, operably engages an energy management module to generate an audiovisual alarm visible from outside the vehicle to warn of necessary precautions to mitigate the risk of electric shock.

[0007] On the other hand, at least a portion of the audiovisual alarm can be generated as a pseudo-random display of audiovisual signals to draw attention to the detection of a high-voltage isolation fault.

[0008] On the other hand, at least a portion of the audiovisual alarm can be generated as an indication of a high-voltage isolation fault detected by an coded pattern.

[0009] On the other hand, the notification component can engage with the energy management module to command the main management controller to operate the vehicle's equipment to generate audiovisual alarms, thereby drawing attention to the vehicle.

[0010] On the other hand, audiovisual alarms include visual alarms provided by the vehicle's lights, which can be observed from outside the vehicle and are operated by the main management controller.

[0011] On the other hand, the lights may include headlights and turn signals operated by the main management controller.

[0012] On the other hand, audio-visual alarms include audio alarms that can be observed from outside the vehicle, provided by a sound-generating component operated by the main management controller.

[0013] On the other hand, the sound-generating component may include a speaker, and wherein generating an audio alarm includes operating the speaker with a short "blip" sound.

[0014] Accordingly, this disclosure may be characterized by a system for providing notification of a detected high-voltage isolation fault in a vehicle, the system comprising a monitoring component, a fault detection component, and a notification component. The monitoring component may monitor the high-voltage system and chassis for voltage conditions. The fault detection component may determine whether the voltage condition between the high-voltage system and the chassis indicates a high-voltage isolation fault. The notification component may operatively engage an energy management module upon detection of a high-voltage isolation fault to command a main management controller to operate vehicle equipment to generate an audiovisual alarm to warn of the risk of electric shock. The vehicle equipment may be observable from outside the vehicle and includes lights and an audible component. The audiovisual alarm may include a visual alarm provided by the lights and an audio alarm provided by the audible component.

[0015] On the other hand, at least a portion of the audiovisual alarm can be generated as a pseudo-random display of visual and audio alarms to draw attention to the detection of a high-voltage isolation fault.

[0016] On the other hand, at least a portion of the audiovisual alarm can be generated as an indication of the detection of a high-voltage isolation fault in a coded pattern, which serves as both a visual and audio alarm.

[0017] On the other hand, light is emitted by the headlights and turn signals, and audio alarms are emitted by the horn.

[0018] Accordingly, this disclosure may be characterized by a method for providing notification of a high-voltage isolation fault in a vehicle that can be observed from outside the vehicle. The method may include monitoring the voltage condition of the high-voltage system and the chassis. The method may additionally include determining whether the voltage condition between the high-voltage system and the chassis indicates a high-voltage isolation fault. The method may also include engaging an energy management module to notify of the risk of electric shock upon detection of a high-voltage isolation fault. Furthermore, the method may include operating vehicle equipment via a main management controller to generate an audiovisual alarm that can be observed from outside the vehicle. The audiovisual alarm may include a visual alarm provided by the vehicle's lights and an audio alarm provided by the vehicle's sound-emitting components.

[0019] In another aspect of the method, the operation of the vehicle equipment may further include: generating at least part of a pseudo-random display as a visual and audio alarm to draw attention to the detection of a high-voltage isolation fault.

[0020] In another aspect of the method, the lamps may include headlights and turn signals, and the sound-generating components may include horns.

[0021] The terms and expressions used throughout this disclosure should be interpreted broadly. Terms are intended to be understood as corresponding to the definitions provided in this specification. Technical dictionaries and common meanings understood within the scope of application are intended to supplement these definitions. In instances where a suitable definition cannot be determined from the specification or a technical dictionary, such terms should be understood according to their simple and common meaning. However, any definitions provided in this specification shall prevail over all other sources.

[0022] The various objects, features, aspects and advantages described in this disclosure will become more apparent from the following detailed description and the accompanying drawings, in which the same reference numerals denote the same components. Attached Figure Description

[0023] Figure 1 This is a block diagram of an illustrative high-voltage isolation fault notification system according to embodiments of the present disclosure.

[0024] Figure 2 This is a side view of an illustrative audiovisual alarm being shown according to an embodiment of the present disclosure.

[0025] Figure 3 This is a front view of an illustrative audiovisual alarm being displayed according to an embodiment of the present disclosure.

[0026] Figure 4 This is a graphical view of an illustrative audiovisual alarm provided as an encoded pattern according to an embodiment of the present disclosure.

[0027] Figure 5 This is a flow view of an illustrative operation for providing notification of a detected high-voltage isolation fault according to embodiments of the present disclosure. Detailed Implementation

[0028] The following disclosure describes various embodiments of a high-voltage isolation fault notification system. Those skilled in the art will appreciate additional embodiments and uses of the invention beyond the examples described herein. Terms included in any claim should be interpreted as defined within this disclosure. Singular forms should be interpreted as contemplating and disclosing plural alternatives. Similarly, plural forms should be interpreted as contemplating and disclosing singular alternatives. Conjunctions should be interpreted as inclusive unless otherwise stated.

[0029] Statements such as "at least one of A, B, and C" should be interpreted as permitting any one of A, B, or C, either alone or in combination with the remaining elements. Additionally, such groups may include multiple instances of one or more elements within the group, which may be included together with other elements in the group. Unless otherwise expressly stated, all figures, measurements, and values ​​are approximate results.

[0030] To clearly describe the components and features discussed throughout this disclosure, some frequently used terms will now be defined, but not limited thereto. As used throughout this disclosure, the term "high-voltage system" is defined as a system within a vehicle that operates at a voltage higher than 12 volts and typically includes a battery pack, drive motor, and related components. As used throughout this disclosure, the term "chassis" is defined as the metal frame of a vehicle that serves as a common return path for current.

[0031] As used throughout this disclosure, the term "energy management module" is defined as a system responsible for intelligently allocating and controlling the energy flow through a vehicle. As used throughout this disclosure, the term "body management controller" is defined as a computer and / or controller that monitors and controls various electronic accessories and other non-powertrain-related vehicle equipment throughout the body of the vehicle. As used throughout this disclosure, the term "vehicle equipment" is defined as components and other devices provided by the vehicle, such as lights, headlights, turn signals, sound-generating components, horns, and other equipment that those skilled in the art will appreciate upon benefiting from this disclosure.

[0032] As used throughout this disclosure, pseudo-random display is defined as an array of outputs that are substantially random but can be generated using algorithms or other underlying structures. As used throughout this disclosure, encoded pattern is defined as a predictable sequence of outputs that, when identified, indicates a decipherable message.

[0033] Various aspects of this disclosure will now be described in detail, but are not limited thereto. In the following disclosure, a high-voltage isolation fault notification system will be discussed. Those skilled in the art will appreciate that alternative designations for a high-voltage isolation fault notification system include high-voltage isolation fault warning system, externally observable notification system for high-voltage isolation faults, vehicle warning system, invention, or other similar names. Similarly, those skilled in the art will appreciate that alternative designations for a high-voltage isolation fault notification system include a method for providing externally observable warnings of high-voltage isolation faults, a method for generating notifications of high-voltage isolation faults that can be observed externally on a vehicle, a method, procedure, operation for informing a user of a vehicle's condition without requiring contact with the vehicle, invention, or other similar names. Skilled readers should not assume that the inclusion of any alternative labels is intended as limitation in any way.

[0034] Now for reference Figures 1-5 The high-voltage isolation fault notification system will now be discussed in more detail. The high-voltage isolation fault notification system may include monitoring components, fault detection components, notification components, audiovisual alarms, and additional components, which will be discussed in more detail below. The high-voltage isolation fault notification system can interact with one or more of these components to provide notification of a detected high-voltage isolation fault that can be observed from outside the vehicle.

[0035] like Figure 1 Example block diagram 100 and Figures 2-3 As shown in the view, the illustrative system 110 may include a monitoring component 112, a fault detection component 114, and a notification component 116. Each of these components will be discussed in more detail below. The system can interact with vehicles 120, 220, and 320. Vehicles 120, 220, and 320 may include a high-voltage system 122 and a chassis 124, with which voltage resistance can be measured to determine voltage characteristics. Vehicles 120, 220, and 320 may additionally include an energy management module 132 and a main management controller 134. These components will be discussed in more detail below. Vehicles 120, 220, and 320 may additionally include vehicle equipment 140. Example vehicle equipment may include lights 150, 250, 350, such as headlights 152, 252, 352 and / or turn signals 154, 254, 354, and sound-emitting components 160, 260, 360, such as horns 162, 262, 362. Vehicles 120, 220, 320 including vehicle equipment 140 may provide audiovisual alarms 170. Audiovisual alarms 170 may include visual alarms 180 and / or audio alarms 190.

[0036] The monitoring components will now be discussed in more detail. Figure 1 An example of a monitoring component is highlighted, which may also be shown in other figures. Monitoring component 112 can monitor voltage levels, potentials between different voltage systems, and resistances between voltage systems at various locations of vehicles 120, 220, and 320 to determine voltage conditions. For example, monitoring component 112 may use an isolation monitoring device (IMD) that can monitor the resistance between high-voltage system 122 and vehicle chassis 124. If this resistance drops below a safe threshold, a malfunction may have occurred.

[0037] As those skilled in the art will appreciate, the monitoring component 112 using the IMD can operate via DC injection, AC injection, or other means. In a configuration using DC injection, a small DC voltage can be applied, and leakage current can be measured. In a configuration using AC injection, a low-frequency AC signal can be used to improve sensitivity. In additional configurations, the sensor can detect unexpected voltage differences between system components such as the high-voltage system 122 and the chassis 124, thereby indicating potential problems. Additionally, the vehicle's on-board diagnostic system can monitor for faults and store diagnostic fault codes (DTCs) in cases of abnormal observation. In some embodiments, multiple monitoring configurations can operate substantially simultaneously to improve efficiency and provide redundancy.

[0038] The fault detection component will now be discussed in more detail. Figure 1An example of a fault detection component is highlighted, which may also be shown in other figures. As those skilled in the art will appreciate, the fault detection component may operate in a manner compatible with, but not limited to, the configuration of monitoring component 112. For example, when monitoring component 112 operates via an isolation monitoring device (IMD), fault detection component 114 may determine that a high-voltage isolation fault has occurred when the insulation resistance is outside an acceptable threshold. For example, a high-voltage isolation fault may be declared if the measured resistance between high-voltage system 122 and chassis 124 is below this threshold. This threshold may be carefully selected to strike a balance between sensitivity and avoiding false positives. When monitoring component 112 uses an AC injection method, the IMD may analyze the returned signal for changes in amplitude, frequency, or waveform indicating a high-voltage isolation fault.

[0039] In an additional example of fault detection component 114, the voltage between different points in the high-voltage system 122 and the chassis 124 can be compared to determine whether the difference exceeds an acceptable threshold. In another example, a sudden change in voltage (even if it does not exceed an absolute threshold) can also trigger an indication that a high-voltage isolation fault has occurred, advantageously aiding in the detection of rapidly evolving faults. Those skilled in the art will appreciate, upon benefiting from this disclosure, additional techniques for monitoring voltage within vehicles 120, 220, 320 and detecting abnormal conditions, each of which is intended to be included within the scope and spirit of this disclosure.

[0040] The notification component will now be discussed in more detail. Figures 1-4 An example of a notification component is highlighted, which may also be shown in other figures. In at least one embodiment, notification component 116 may be operatively engaged with aspects of vehicles 120, 220, 320 to alert a user of the detected fault upon detection of a high-voltage isolation fault. For example, notification component 116 may engage energy management module (EMM) 132 to generate an audiovisual alarm 170 observable from outside vehicles 120, 220, 320 to warn of necessary precautions to mitigate the risk of electric shock.

[0041] As those skilled in the art will appreciate, EMM 132 can at least partially control power distribution, determining how to efficiently use and distribute available energy among different systems. The EMM 132, present in electric and hybrid vehicles 120, 220, 320, can help control the use of high-voltage energy, and the operation of the EMM can directly affect the range and performance of vehicles 120, 220, 320. EMM 132 can allocate at least a portion of the vehicle's power to vehicle equipment to allow audiovisual alarms 170 to be presented to the user.

[0042] Upon detecting a fault, notification component 116 can cause EMM 132 to command Main Controller Module (BCM) 134 to operate vehicle equipment capable of providing audiovisual alarm 170. For example, notification component 116 can engage EMM 132 to command BCM 134 to operate vehicle equipment to generate audiovisual alarm 170, thereby drawing attention to vehicles 120, 220, and 320.

[0043] As those skilled in the art will appreciate, the BCM 134 (also known as a main control module or main controller, but not limited thereto) may be provided by computer hardware to monitor and control various electronic functions within vehicles 120, 220, 320. For example, the BCM 134 may control lights 150 including headlights 152, turn signals 154, taillights, interior lights, and turn signals, typically including automatic features such as daytime running lights and automatic headlight activation. The BCM 134 may additionally control vehicle alarm systems, windshield wipers, mirrors, sound-generating components 160, horn 162, loudspeakers, locks, and other vehicle features. In various embodiments, one or more of the above-described example vehicle features and / or other vehicle equipment 140 may be operated to provide an audiovisual alarm 170 to an operator, technician, or other user in the event of a detected high-voltage isolation fault, but is not limited thereto.

[0044] The audiovisual alarms will now be discussed in more detail. Figures 1-4 Examples of audiovisual alarms are highlighted, which may also be shown in other figures. The audiovisual alarm 170 engaged by BCM 134 may include a visual alarm 180 provided by light 150 and / or an audio alarm 190 provided by audible assembly 160, each of which can be observed from outside the vehicles 120, 220, 320. Examples of lights 150 operable for the visual alarm include headlights 152, turn signals 154, and / or other lights noticeable from outside the vehicles 120, 220, 320, as will be appreciated by those skilled in the art. Examples of audible assemblies 160 may include a horn 162, a buzzer, a speaker, and / or other audible components noticeable from outside the vehicles 120, 220, 320, as will be appreciated by those skilled in the art. In some embodiments, light 150 may be pulsed or flashing, and horn 162 may operate with a short “beep” sound.

[0045] In some embodiments, at least a portion of the audiovisual alarm 170 is generated as a pseudo-random display of an audiovisual signal to draw attention to the detection of a high-voltage isolation fault. In other embodiments, at least a portion of the audiovisual alarm 170 is generated as an coded pattern of an audiovisual signal indicating the detection of a high-voltage isolation fault. Other patterns and displays will be appreciated by those skilled in the art upon receipt of this disclosure, by which vehicle equipment 140 can be operated to provide the audiovisual alarm 170 observable from outside vehicles 120, 220, 320, and these other patterns and displays are intended to be included within the scope of this disclosure.

[0046] Now for reference Figure 4 Graphic 400 plots an illustrative audiovisual alarm that changes over time to provide an example, but is not limited to, possible indications presented to the user when a high-voltage isolation fault is detected. When the illustrative operation of graphic 400 begins, the monitoring component can monitor the voltage status of the vehicle. The fault detection component can determine whether the voltage status is within acceptable limits, which indicates that no high-voltage isolation fault has been detected. This state of no detectable high-voltage isolation fault is indicated by the time preceding event 426.

[0047] As the monitoring components continuously observe the voltage status, the fault detection components can determine that a high-voltage isolation fault has occurred at event 426. Upon determining that a high-voltage isolation fault has occurred at event 426, the fault detection components can signal the notification components to coordinate with various aspects of the vehicle to provide visual and auditory alarms. Then, visual output 480 can enter visual output alarm state 482, and audio output 490 can enter audio output alarm state 492.

[0048] In the example of a detected high-voltage isolation fault (discussed with reference to Figure 400), both the audio output 490 and the visual output 480 are plotted over time. Prior to the occurrence of the high-voltage isolation fault event 426, both the visual output 480 and the audio output 490 can be substantially disabled. Upon detection of the high-voltage isolation fault at event 426, the visual output 480 can operate in a visual output alarm state 482, and the audio output 490 can operate in an audio alarm state 492. In this example, the visual output alarm state 482 and the audio output alarm state 492 may include audiovisual signals displayed in an coded mode by vehicle equipment, which, when viewed by an operator, technician, or other user, can be used to determine that a high-voltage isolation fault has occurred or is currently occurring.

[0049] The visual output 480 operating in visual output alarm state 482 may include multiple emissions of light 484 that can be emitted in a repetitive pattern. However, those skilled in the art will appreciate additional embodiments in which the visual output 480 is random and / or pseudo-random in order to attract the attention of an operator, technician, or other user.

[0050] Similarly, the audio output 490 operating in audio output alarm state 492 may include multiple emissions of sound 494, which may also be emitted in a repetitive "beep" pattern. For the purposes of this disclosure, the "beep" is intended to be a short pulse of sound. However, those skilled in the art will appreciate additional embodiments in which the audio output 490 operating in audio output alarm state 492 is timed to match the visual output 480 operating in visual output alarm state 482, which is independently timed or otherwise presented, but is not limited thereto. Additionally, those skilled in the art will appreciate that the audio output 490 operating in audio output alarm state 492 may operate in random and / or pseudo-random patterns to draw attention to the vehicle where a high-voltage isolation fault has occurred or is occurring, but is not limited thereto.

[0051] Both the visual output 480, operating in alarm state 482, and the audio output 490, operating in alarm state 492, can be viewed by an operator, technician, or other user outside the vehicle without physical contact with the vehicle, to provide a warning to the operator, technician, or other user without placing them in unnecessary injury or danger. In one embodiment, alarm states 482, 492 may continue until disabled by the operator, technician, or other user. Optionally, the visual output 480 and / or audio output 490 can be disabled if a high-voltage isolation fault is no longer detected, which can indicate that the risk of electric shock no longer requires an alarm.

[0052] In operation, a method may be provided for notifying of a detected high-voltage isolation fault that can be observed from outside the vehicle. Those skilled in the art will appreciate that the following methods are provided to illustrate embodiments of this disclosure, and that these methods should not be construed as limiting this disclosure to those methods or aspects. Having benefited from this disclosure, those skilled in the art will appreciate additional methods within the scope and spirit of this disclosure for performing the operations provided by the following examples. This disclosure is intended to include such additional methods.

[0053] Now for reference Figure 5Flowchart 500 describes, but is not limited to, an example method of illustrative operation for providing notification of a detected high-voltage isolation fault. Starting at box 502, the operation may begin with monitoring the high-voltage system and chassis for voltage conditions (box 510). It can then be determined at box 512 whether a high-voltage isolation fault has been detected.

[0054] If no high-voltage isolation fault is detected at box 512, operation can return to box 510 and continue monitoring the voltage system and chassis for voltage conditions. Conversely, if a high-voltage isolation fault is detected at box 512, the system can engage the energy management module to generate an audiovisual alarm to warn the operator, technicians, and other users of the potential risk of electric shock (box 520). The vehicle's energy management module and / or other systems can engage the main management controller to operate the vehicle equipment to display an alarm indicating a detected high-voltage isolation fault (box 522). Alarms generated by the vehicle equipment can be observed outside the vehicle's cab, such as to allow the operator, technicians, or other users to be alerted to the fault condition without having to come into contact with the potentially hazardous vehicle. The main management controller can operate lights such as headlights and turn signals to provide a visual alarm (box 524). Additionally, the main management controller can operate sound-emitting devices such as horns to emit an audio alarm (box 526). Operation can then terminate at box 530.

[0055] While various aspects have been described in the foregoing disclosure, the description herein is intended to be illustrative and not limiting of the scope of the invention. The invention is defined by the scope of the appended claims, and not by the illustrations and examples provided in the foregoing disclosure. Additional aspects of the invention, which may be implemented in alternative embodiments, will be appreciated by those skilled in the art upon receiving the foregoing disclosure. Other aspects, advantages, embodiments, and modifications are within the scope of the appended claims.

Claims

1. A high-voltage isolation fault notification system for vehicles, comprising: Monitoring components are used to monitor the voltage conditions of the high-voltage system and chassis; A fault detection component is used to determine whether the voltage condition between the high-voltage system and the chassis indicates a high-voltage isolation fault. as well as A notification component that, upon detecting a high-voltage isolation fault, can operatively engage the energy management module to generate an audiovisual alarm observable from outside the vehicle to warn of necessary precautions to mitigate the risk of electric shock.

2. The system according to claim 1, wherein, At least a portion of the audiovisual alarm is generated as a pseudo-random display of audiovisual signals to draw attention to the detection of the high-voltage isolation fault.

3. The system according to claim 1, wherein, At least a portion of the audiovisual alarm is generated as an audiovisual signal indicating that the high-voltage isolation fault has been detected by an coded pattern.

4. The system according to claim 1, wherein, The notification component engages with the energy management module to command the main management controller to operate the vehicle equipment to generate the audiovisual alarm, thereby drawing attention to the vehicle.

5. The system according to claim 4, wherein, The audiovisual alarms include visual alarms provided by the vehicle's lights, which are visible from outside the vehicle and operated by the main management controller.

6. The system according to claim 5, wherein, The lights include headlights and turn signals operated by the main management controller.

7. The system according to claim 4, wherein, The audiovisual alarms include audio alarms that can be observed from outside the vehicle, and the audio alarms are provided by a sound-generating component operated by the main management controller.

8. The system according to claim 7, wherein, The sound-generating component includes a speaker, and wherein generating the audio alarm includes operating the speaker with a short "beep" sound.

9. A system for providing notification of a detected high-voltage isolation fault in a vehicle, comprising: Monitoring components are used to monitor the voltage conditions of the high-voltage system and chassis; A fault detection component is used to determine whether the voltage condition between the high-voltage system and the chassis indicates a high-voltage isolation fault. as well as The notification component is operable to engage the energy management module when a high-voltage isolation fault is detected, instructing the main management controller to operate the vehicle equipment to generate an audio-visual alarm to warn of the risk of electric shock. The vehicle equipment is observable from the outside of the vehicle and includes: lamp; and Sound-generating components; and The audiovisual alarm includes: The visual alarm provided by the light, and An audio alarm provided by the sound-generating component.

10. The system according to claim 9, wherein, At least a portion of the audiovisual alarms are generated as a pseudo-random display of the visual alarms and the audio alarms to draw attention to the detection of the high-voltage isolation fault.

11. The system according to claim 9, wherein, At least a portion of the audiovisual alarm is generated as an indication of the detection of the high-voltage isolation fault by the visual alarm and the audio alarm.

12. The system according to claim 9, wherein, The light is emitted by the headlights and turn signals, and the audio alarm is emitted by the horn.

13. A method for providing notification of a high-voltage isolation fault in a vehicle that can be observed from outside the vehicle, comprising: a) Monitoring of voltage conditions in high-voltage systems and chassis; b) Determine whether the voltage condition between the high-voltage system and the chassis indicates a high-voltage isolation fault; as well as c) Upon detection of a high-voltage isolation fault, engage the energy management module to notify of the risk of electric shock; d) Operate vehicle equipment via the main management controller to generate audiovisual alarms that can be observed from outside the vehicle; and The audiovisual alarm includes: Visual warnings provided by the lights of the vehicle, and An audio alarm provided by the sound-generating component of the vehicle.

14. The method according to claim 13, wherein, Step d) further includes: generating at least part of the visual and audio alarms as a pseudo-random display of the visual alarms and the audio alarms to draw attention to the detection of the high-voltage isolation fault.

15. The method according to claim 13, wherein, The light includes headlights and turn signals, and the sound-generating component includes a horn.

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