High-voltage interlocking detection method and device and storage medium

Abstract

The invention discloses a high-voltage interlocking detection method and device and a storage medium, and belongs to the technical field of new energy automobiles. A VIU and a high-voltage component without a high-voltage interlocking self-checking function are connected in series to form a high-voltage interlocking loop, and the method comprises the following steps: the VIU inputs a high-voltage interlocking detection signal to the high-voltage interlocking loop and obtains a detection result; determining whether the high-voltage interlocking loop has a high-voltage interlocking fault according to the detection result, and if the high-voltage interlocking loop has the high-voltage interlocking fault, sending a first high-voltage interlocking fault message to a VCU; and the VCU carries out fault processing on the first high-voltage interlocking fault message according to the vehicle state of the vehicle. According to the invention, high-voltage interlocking detection can be carried out on a high-voltage component without a high-voltage interlocking self-detection function.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a high-voltage interlock detection method, device and storage medium. Background Art

[0002] In recent years, with the continuous development of electric vehicle technology, electric vehicles have become more and more popular, and people are paying more and more attention to the safety of electric vehicles. High voltage interlocking is an important function in high voltage safety.

[0003] At present, for some more advanced models, the high-voltage interlock detection of high-voltage components in the car is usually self-checked by the built-in circuit of the high-voltage components. However, for some other models, some high-voltage components in the car do not have the high-voltage interlock self-check function, such as PDU (Power Distribution Unit), HVH (High Voltage Heater), EAC (Electric Air Conditioner). So, how to perform high-voltage interlock detection on these high-voltage components is a problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide a high-voltage interlock detection method, device and storage medium, which can realize high-voltage interlock fault detection of high-voltage components that do not have a high-voltage interlock self-test function. The technical solution is as follows:

[0005] In a first aspect, a high-voltage interlock detection method is provided, wherein a vehicle body domain controller VIU and a high-voltage component without a high-voltage interlock self-test function are connected in series to form a high-voltage interlock circuit, and the method comprises:

[0006] The VIU inputs a high-voltage interlock detection signal to the high-voltage interlock circuit and obtains a detection result;

[0007] Determine whether there is a high-voltage interlock fault in the high-voltage interlock circuit according to the detection result, and if there is a high-voltage interlock fault in the high-voltage interlock circuit, send a first high-voltage interlock fault message to a vehicle controller VCU;

[0008] The VCU performs fault processing on the first high-voltage interlock fault message according to the vehicle state of the vehicle.

[0009] In a possible implementation, the high-voltage components that do not have the high-voltage interlock self-test function include one or more of a power distribution unit PDU, a high-voltage heater HVH, and an electric air-conditioning compressor EAC.

[0010] In a possible implementation, the VCU performs fault processing on the first high-voltage interlock fault message according to the vehicle state of the vehicle, including:

[0011] If the VCU determines that the vehicle state is the driving state, it will perform a first high-voltage interlock fault prompt and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and at the end of the countdown, control the power system to stop working.

[0012] In a possible implementation, the VCU performs fault processing on the first high-voltage interlock fault message according to the vehicle state of the vehicle, including:

[0013] If the VCU determines that the vehicle state is a parking state, a first high-voltage interlock fault prompt is issued through at least one of a dashboard display screen, a central control screen, and a head-up display screen HUD of the vehicle.

[0014] In a possible implementation, the method further includes:

[0015] The VCU receives a second high-voltage interlock fault message sent by the on-board charging unit CDU;

[0016] If the VCU determines that the vehicle state is the driving state, it will issue a high-voltage interlock fault prompt of the on-board charger and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and control the power system to stop working when the countdown ends.

[0017] In a possible implementation, the method further includes:

[0018] If the VCU determines that the vehicle state is a parking state, a high-voltage interlock fault prompt of the on-board charger is issued through at least one of the instrument panel display screen, the central control screen and the head-up display screen HUD of the vehicle.

[0019] In a second aspect, a high-voltage interlock detection device is provided, wherein a vehicle body domain controller VIU and a high-voltage component without a high-voltage interlock self-test function are connected in series to form a high-voltage interlock circuit, and the device is applied to a VCU, and the device comprises:

[0020] A receiving module, used for receiving a first high-voltage interlock fault message sent from the VIU, wherein the VIU inputs a high-voltage interlock detection signal to the high-voltage interlock circuit and obtains a detection result, determines whether the high-voltage interlock circuit has a high-voltage interlock fault according to the detection result, and sends the message to the VCU if the high-voltage interlock circuit has a high-voltage interlock fault;

[0021] A processing module is used to perform fault processing on the first high-voltage interlock fault message according to the vehicle state of the vehicle.

[0022] In a possible implementation, the high-voltage components that do not have the high-voltage interlock self-test function include one or more of a power distribution unit PDU, a high-voltage heater HVH, and an electric air-conditioning compressor EAC.

[0023] In a possible implementation, the processing module is used to:

[0024] If the VCU determines that the vehicle state is the driving state, it will perform a first high-voltage interlock fault prompt and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and at the end of the countdown, control the power system to stop working.

[0025] In a possible implementation, the processing module is used to:

[0026] If the VCU determines that the vehicle state is a parking state, a first high-voltage interlock fault prompt is issued through at least one of a dashboard display screen, a central control screen, and a head-up display screen HUD of the vehicle.

[0027] In a possible implementation, the receiving module is further used for:

[0028] Receiving a second high voltage interlock fault message sent by the on-board charging unit CDU;

[0029] The processing module is further used for:

[0030] If the VCU determines that the vehicle state is the driving state, it will issue a high-voltage interlock fault prompt of the on-board charger and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and control the power system to stop working when the countdown ends.

[0031] In a possible implementation, the processing module is further configured to:

[0032] If the VCU determines that the vehicle state is a parking state, a high-voltage interlock fault prompt of the on-board charger is issued through at least one of the instrument panel display screen, the central control screen and the head-up display screen HUD of the vehicle.

[0033] In a third aspect, a vehicle controller is provided, which includes a processing circuit and a storage circuit, wherein at least one instruction is stored in the storage circuit, and the instruction is loaded and executed by the processing circuit to implement the operations performed by the high-voltage interlock detection method as described in the first aspect and its possible implementation methods.

[0034] In a fourth aspect, a computer-readable storage medium is provided, wherein at least one instruction is stored in the storage medium, and the instruction is loaded and executed by a vehicle controller to implement the operations performed by the high-voltage interlock detection method as described in the first aspect and its possible implementation methods.

[0035] In a fifth aspect, a computer program product is provided, which includes at least one instruction, which is loaded and executed by a vehicle controller to implement the operations performed by the high-voltage interlock detection method as described in the first aspect and its possible implementation methods.

[0036] The beneficial effects of the technical solution provided by this application are:

[0037] In the technical solution provided in the present application, the VIU is connected in series with high-voltage components that do not have the high-voltage interlock self-test function to form a high-voltage interlock circuit. In this way, the VIU can detect the high-voltage interlock circuit to determine whether these high-voltage components have a high-voltage interlock fault, and then execute the corresponding fault handling strategy. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 is a schematic diagram of a high-voltage interlock detection method provided in an embodiment of the present application;

[0040] Figure 2 is a method flow chart of a high voltage interlock detection method provided in an embodiment of the present application;

[0041] Figure 3 is a schematic diagram of a high-voltage interlock detection method provided in an embodiment of the present application;

[0042] Figure 4 It is a schematic diagram of the device structure of a high-voltage interlock detection method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of the application embodiments, some terms in the application embodiments are explained below.

[0044] HVIL (HVIL-High Voltage Interlock, high voltage interlock):

[0045] The high-voltage interlock detects the connection status of high-voltage connectors, wiring harnesses and components through the continuity of the low-voltage circuit. When a high-voltage connector is not plugged in or is loose, the low-voltage circuit is disconnected, indicating a high-voltage interlock fault, and then a fault alarm and subsequent processing are performed.

[0046] In high-voltage components, the plugging and disconnecting of high-voltage terminals must be timed with the low-voltage interlocking terminals. When plugging, the high-voltage terminals are connected first; when disconnecting, the low-voltage interlocking terminals are disconnected first to prevent arcing.

[0047] VIU (Vehicle Intranet Unit, vehicle domain controller):

[0048] In the electronic and electrical architecture of smart cars (such as centralized or domain control architecture), VIU is responsible for the management and communication coordination of electronic equipment in a specific physical area. Its core functions include: Regional device access: Sensors, actuators and other hardware are connected nearby, and local communication is carried out through protocols such as CAN (Controller Area Network) bus / LIN (Local Interconnect Network) bus, and it can also interact with other regional or central controllers, such as VCU (Vehicle Control Unit).

[0049] In recent years, with the continuous development of electric vehicle technology, electric vehicles have become more and more popular, and people are paying more and more attention to the safety of electric vehicles. High voltage interlocking is an important function in high voltage safety.

[0050] At present, for some advanced models, the high-voltage interlock detection of high-voltage components in the car is usually self-checked by the built-in circuit of the high-voltage components. However, for some other models, some high-voltage components in the car do not have the high-voltage interlock self-check function, such as PDU (Power Distribution Unit), HVH (High Voltage Heater), EAC (Electric Air Conditioner).

[0051] An embodiment of the present application provides a high-voltage interlock detection method, in which a VIU on a vehicle is reused, and the VIU and a high-voltage component that does not have a high-voltage interlock self-test function are connected in series to form a high-voltage interlock circuit. Then, the VIU can input a high-voltage interlock detection signal to the high-voltage interlock circuit to obtain a detection result, and determine whether there is a high-voltage interlock fault in the high-voltage interlock circuit based on the detection result. If there is a high-voltage interlock fault in the high-voltage interlock circuit, a first high-voltage interlock fault message is sent to the VCU (Vehicle Control Unit), so that the VCU can perform fault processing on the first high-voltage interlock fault message based on the vehicle status of the vehicle.

[0052] The following is a description of the high-voltage interlock detection method provided by the embodiment of the present application in conjunction with the accompanying drawings. In this method, a vehicle-mounted body domain controller VIU and a high-voltage component that does not have a high-voltage interlock self-test function are connected in series to form a high-voltage interlock circuit. Figure 1 The high-voltage components that do not have the high-voltage interlock self-test function may include PDU, HVH, and EAC. The low-voltage connectors of these components are connected in series through low-voltage wiring harnesses to form a high-voltage interlock circuit. In addition, the VIU and the VCU are connected by communication. Figure 2 , the method may include the following processing steps:

[0053] Step 201: The VIU inputs a high-voltage interlock detection signal to the high-voltage interlock circuit and obtains a detection result.

[0054] In implementation, when the high-voltage interlock detection conditions are met, the VIU inputs a high-voltage interlock detection signal to the above-mentioned high-voltage interlock circuit and obtains the detection result.

[0055] The high-voltage interlock detection condition may be reaching a specified period, or receiving a high-voltage interlock detection instruction, and the high-voltage interlock detection instruction may come from the VCU.

[0056] There may be multiple types of high voltage interlock detection signals, and several are listed below for illustration:

[0057] 1. The high voltage interlock detection signal is a PWM (Pulse width modulation) signal.

[0058] The VIU inputs a PWM signal into the high-voltage interlocking loop through the output terminal and receives a check signal through the input terminal. If the check signal is consistent with the output PWM signal, the high-voltage interlocking loop is determined to be intact. If the check signal and the output PWM signal are inconsistent for N signal cycles, the high-voltage interlocking loop is determined to be faulty. N can be configured according to actual needs, and N = 10 is exemplary.

[0059] 2. The high voltage interlock detection signal is a constant level signal.

[0060] The VIU inputs a constant level signal into the high-voltage interlocking loop through the output terminal, and receives a check signal through the input terminal. If the check signal is consistent with the output level signal, the high-voltage interlocking loop is determined to be intact. If the check signal and the output constant level signal are inconsistent for a duration T, the high-voltage interlocking loop is determined to be faulty. The duration T can be configured according to actual needs. For example, the duration T = 1 second.

[0061] 3. The high voltage interlock detection signal is a constant level signal.

[0062] The VIU inputs a constant level signal into the high-voltage interlocking circuit and detects the resistance value of the high-voltage interlocking circuit. If the resistance value of the high-voltage interlocking circuit is infinite and lasts for a period of time T, it is determined that the high-voltage interlocking circuit is faulty. The period of time T can be configured according to actual needs. For example, the period of time T = 1 second.

[0063] Step 202: Determine whether there is a high-voltage interlock fault in the high-voltage interlock circuit according to the detection result. If there is a high-voltage interlock fault in the high-voltage interlock circuit, send a first high-voltage interlock fault message to the VCU.

[0064] In implementation, for the case where the high-voltage interlock detection signal is a PWM signal, the detection result is a feedback signal. If the feedback signal and the output PWM signal are inconsistent for N signal cycles, it is determined that the high-voltage interlock circuit is faulty. Then, the VIU sends a first high-voltage interlock fault message to the VCU. The first high-voltage interlock fault message is used to indicate that there is a fault in the above-mentioned high-voltage interlock circuit.

[0065] For the case where the high-voltage interlock detection signal is a constant level signal, the detection result can be a feedback signal. If the feedback signal and the output constant level signal are inconsistent for a duration T, a high-voltage interlock circuit fault is determined. Then, the VIU sends a first high-voltage interlock fault message to the VCU. The first high-voltage interlock fault message is used to indicate that there is a fault in the above-mentioned high-voltage interlock circuit.

[0066] For the case where the high-voltage interlock detection signal is a constant level signal, the detection result can also be the resistance value of the high-voltage interlock loop. If the resistance value of the high-voltage interlock loop is infinite and lasts for T time, it is determined that the high-voltage interlock loop is faulty. Then, the VIU sends a first high-voltage interlock fault message to the VCU. The first high-voltage interlock fault message is used to indicate that there is a fault in the above-mentioned high-voltage interlock loop.

[0067] Step 203: The VCU performs fault processing on the first high-voltage interlock fault message according to the vehicle state.

[0068] In implementation, after receiving the first high-voltage interlock fault message, the VCU determines the current vehicle state. If it is determined that the vehicle state is in driving state, the first high-voltage interlock fault prompt and the power system stop working countdown are performed through at least one of the vehicle's instrument panel display screen, central control screen and HUD (Head Up Display), and at the end of the countdown, the power system is controlled to stop working. In addition, at the beginning of the countdown, if the speed of the vehicle is higher than the specified speed, the power system can be controlled to decelerate the vehicle to the specified speed, wherein the specified speed can be configured according to demand, and illustratively, the specified speed can be 60km / h.

[0069] If the VCU determines that the vehicle is in a parking state, it determines whether the vehicle is in a charging state. If it determines that the vehicle is in a charging state, it stops charging and controls the entire vehicle to lower the high voltage. If it determines that the vehicle is not in a charging state, it determines whether there is a high-voltage interlock failure inside the battery pack. If there is a high-voltage interlock failure inside the battery pack, the entire vehicle is controlled to lower the high voltage, and a high-voltage interlock failure prompt is given through at least one of the vehicle's instrument panel display, central control screen, and HUD. For example, the prompt text is "Battery pack interlock failure, please contact after-sales service."

[0070] If it is determined that the internal high-voltage interlock fault of the battery pack is not a fault, a first high-voltage interlock fault prompt is given through at least one of the vehicle's instrument panel display, central control screen, and head-up display HUD. The first high-voltage interlock fault prompt can be a text prompt, for example, "High-voltage interlock fault, the power system will stop working in 60 seconds, please contact after-sales service."

[0071] In one possible implementation, Figure 3 As shown, in addition to receiving the first high-voltage interlock fault message sent by VIU, VCU can also receive high-voltage interlock fault messages from CDU (Charge Device Unit), BMS (Battery Management System), and MCU (Motor Controller). Among them, CDU, BMS and MCU can perform high-voltage interlock detection on different high-voltage components respectively, and report the corresponding high-voltage interlock fault message to VCU when a high-voltage interlock fault is detected. For high-voltage interlock fault messages from different sources, VCU can issue different high-voltage interlock fault prompts so that relevant personnel can locate and troubleshoot the repair fault in time.

[0072] During implementation, the VCU may receive a second high-voltage interlock fault message sent by the BMS.

[0073] After receiving the first high-voltage interlock fault message, the VCU determines the current vehicle state. If it is determined that the vehicle state is in driving state, the vehicle high-voltage interlock fault prompt and the power system stop working countdown are performed through at least one of the vehicle's instrument panel display, central control screen and HUD, and the power system is controlled to stop working at the end of the countdown. In addition, at the beginning of the countdown, if the vehicle speed is higher than the specified speed, the power system can be controlled to decelerate the vehicle to the specified speed, wherein the specified speed can be configured according to demand, and for example, the specified speed can be 60km / h.

[0074] If the VCU determines that the vehicle is in a parking state, it determines whether the vehicle is in a charging state. If it determines that the vehicle is in a charging state, it stops charging and controls the entire vehicle to lower the high voltage. If it determines that the vehicle is not in a charging state, it determines whether there is a high-voltage interlock failure inside the battery pack. If there is a high-voltage interlock failure inside the battery pack, the entire vehicle is controlled to lower the high voltage, and a high-voltage interlock failure prompt is given through at least one of the vehicle's instrument panel display, central control screen, and HUD. For example, the prompt text is "Battery pack interlock failure, please contact after-sales service."

[0075] If it is determined that the internal high-voltage interlock fault of the battery pack is not the cause, a vehicle loop high-voltage interlock fault prompt is provided through at least one of the vehicle's instrument panel display, central control screen, and head-up display HUD. The vehicle loop high-voltage interlock fault prompt can be in the form of text, for example, "Vehicle loop interlock fault, there may be a risk of leakage, please contact after-sales service."

[0076] The VCU can also receive the third high voltage interlock fault message sent by the CDU.

[0077] After receiving the third high-voltage interlock fault message, the VCU determines the current vehicle state. If it is determined that the vehicle state is in driving state, the vehicle high-voltage interlock fault prompt and the power system stop working countdown are performed through at least one of the vehicle's instrument panel display, central control screen and HUD, and the power system is controlled to stop working at the end of the countdown. In addition, at the beginning of the countdown, if the vehicle speed is higher than the specified speed, the power system can be controlled to decelerate the vehicle to the specified speed, wherein the specified speed can be configured according to demand, and for example, the specified speed can be 60km / h.

[0078] If the VCU determines that the vehicle is in a parking state, it determines whether the vehicle is in a charging state. If it determines that the vehicle is in a charging state, it stops charging and controls the entire vehicle to lower the high voltage. If it determines that the vehicle is not in a charging state, it determines whether there is a high-voltage interlock failure inside the battery pack. If there is a high-voltage interlock failure inside the battery pack, the entire vehicle is controlled to lower the high voltage, and a high-voltage interlock failure prompt is given through at least one of the vehicle's instrument panel display, central control screen, and HUD. For example, the prompt text is "Battery pack interlock failure, please contact after-sales service."

[0079] If it is determined that the high-voltage interlock fault is not inside the battery pack, a high-voltage interlock fault prompt for the on-board charger is provided through at least one of the vehicle's instrument panel display, central control screen, and HUD. The on-board charger high-voltage interlock fault prompt can be in the form of text, for example, "The on-board charger high-voltage interlock fault may cause a leakage risk, please contact after-sales service."

[0080] The VCU can also receive a fourth high-voltage interlock fault message sent by the MCU.

[0081] After receiving the fourth high-voltage interlock fault message, the VCU determines the current vehicle state. If it is determined that the vehicle state is in driving state, the vehicle high-voltage interlock fault prompt and the power system stop working countdown are performed through at least one of the vehicle's instrument panel display, central control screen and HUD, and the power system is controlled to stop working at the end of the countdown. In addition, at the beginning of the countdown, if the speed of the vehicle is higher than the specified speed, the power system can be controlled to decelerate the vehicle to the specified speed, wherein the specified speed can be configured according to demand, and for example, the specified speed can be 60km / h.

[0082] If the VCU determines that the vehicle is in a parking state, it determines whether the vehicle is in a charging state. If it determines that the vehicle is in a charging state, it stops charging and controls the entire vehicle to lower the high voltage. If it determines that the vehicle is not in a charging state, it determines whether there is a high-voltage interlock failure inside the battery pack. If there is a high-voltage interlock failure inside the battery pack, the entire vehicle is controlled to lower the high voltage, and a high-voltage interlock failure prompt is given through at least one of the vehicle's instrument panel display, central control screen, and HUD. For example, the prompt text is "Battery pack interlock failure, please contact after-sales service."

[0083] If it is determined that the internal high-voltage interlock fault of the battery pack is not the cause, a motor high-voltage interlock fault prompt is provided through at least one of the vehicle's instrument panel display, central control screen, and head-up display HUD. The motor high-voltage interlock fault prompt may be in the form of text, for example, "motor high-voltage interlock fault, there may be a risk of leakage, please contact after-sales service."

[0084] In the technical solution provided in the present application, the VIU is connected in series with a high-voltage component that does not have a high-voltage interlock self-test function to form a high-voltage interlock circuit. In this way, the VIU can detect the high-voltage interlock circuit to determine whether a high-voltage interlock fault occurs in the high-voltage interlock circuit, and then execute the corresponding fault handling strategy.

[0085] In an exemplary embodiment, a high-voltage interlock detection device is also provided. The vehicle body domain controller VIU and a high-voltage component without a high-voltage interlock self-test function are connected in series to form a high-voltage interlock circuit. The device is applied to the VCU, such as Figure 4 As shown, the device comprises:

[0086] A receiving module 410 is used to receive a first high-voltage interlock fault message sent from the VIU, wherein the VIU inputs a high-voltage interlock detection signal to the high-voltage interlock circuit and obtains a detection result, determines whether the high-voltage interlock circuit has a high-voltage interlock fault according to the detection result, and sends the message to the VCU if the high-voltage interlock circuit has a high-voltage interlock fault;

[0087] The processing module 420 is used to perform fault processing on the first high-voltage interlock fault message according to the vehicle state.

[0088] In a possible implementation, the high-voltage components that do not have the high-voltage interlock self-test function include one or more of a power distribution unit PDU, a high-voltage heater HVH, and an electric air-conditioning compressor EAC.

[0089] In a possible implementation, the processing module 420 is configured to:

[0090] If the VCU determines that the vehicle state is the driving state, it will perform a first high-voltage interlock fault prompt and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and at the end of the countdown, control the power system to stop working.

[0091] In a possible implementation, the processing module 420 is configured to:

[0092] If the VCU determines that the vehicle state is a parking state, a first high-voltage interlock fault prompt is issued through at least one of a dashboard display screen, a central control screen, and a head-up display screen HUD of the vehicle.

[0093] In a possible implementation, the receiving module 420 is further configured to:

[0094] Receiving a second high voltage interlock fault message sent by the on-board charging unit CDU;

[0095] The processing module is further used for:

[0096] If the VCU determines that the vehicle state is the driving state, it will issue a high-voltage interlock fault prompt of the on-board charger and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and control the power system to stop working when the countdown ends.

[0097] In a possible implementation, the processing module 420 is further configured to:

[0098] If the VCU determines that the vehicle state is a parking state, the vehicle charger high-voltage interlock fault prompt is given through at least one of the vehicle's instrument panel display screen, central control screen and head-up display HUD. In the technical solution provided in the present application, the VIU is connected in series with a high-voltage component that does not have a high-voltage interlock self-test function to form a high-voltage interlock circuit. In this way, the VIU can detect the high-voltage interlock circuit to determine whether a high-voltage interlock fault occurs in the PDU, HVH, or EAC, and then execute the corresponding fault handling strategy.

[0099] It should be noted that: the high-voltage interlock detection device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example when performing high-voltage interlock detection. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the vehicle controller is divided into different functional modules to complete all or part of the functions described above. In addition, the high-voltage interlock detection device provided in the above embodiment and the high-voltage interlock detection method embodiment belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0100] In an exemplary embodiment, a vehicle controller is also provided, and the vehicle controller may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The vehicle controller may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The vehicle controller may also include a main processor and a coprocessor, the main processor is a processor for processing data in the wake-up state; the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the vehicle controller may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some examples, the vehicle controller may also include an AI (Artificial Intelligence) processor, which can be used to process computing operations related to machine learning.

[0101] In an exemplary embodiment, a computer-readable storage medium is also provided, such as a memory including instructions, and the instructions can be executed by a processor in a terminal to complete the method of image decoding in the above embodiment. The computer-readable storage medium can be non-transitory. For example, the computer-readable storage medium can be a ROM (Read-Only Memory), a RAM (Random Access Memory), a CD-ROM (Compact Disc Read-Only Memory), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0102] In the description of the application embodiments, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] It is to be understood that in this application, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0104] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0105] It can be further understood that the orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0106] It is further understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection without other components between the two, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0107] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present application, it should not be understood as requiring the operations to be performed in the specific order or serial order shown, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0108] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the scheme disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application. The specification and embodiments are only considered as exemplary, and the true scope and spirit of the present application are indicated by the scope of rights.

[0109] It should be understood that the present application is not limited to the precise structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the scope of the appended claims.

[0110] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals (including but not limited to signals transmitted between user terminals and other devices, etc.) involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions.

[0111] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0112] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for detecting high voltage interlock, characterized in that: The vehicle body domain controller VIU and a high-voltage component without a high-voltage interlock self-test function are connected in series to form a high-voltage interlock circuit, and the method includes: The VIU inputs a high-voltage interlock detection signal to the high-voltage interlock circuit and obtains a detection result; Determine whether there is a high-voltage interlock fault in the high-voltage interlock circuit according to the detection result, and if there is a high-voltage interlock fault in the high-voltage interlock circuit, send a first high-voltage interlock fault message to a vehicle controller VCU; The VCU performs fault processing on the first high-voltage interlock fault message according to the vehicle state of the vehicle.

2. The method according to claim 1, characterized in that The high-voltage components that do not have the high-voltage interlock self-test function include one or more of a power distribution unit PDU, a high-voltage heater HVH, and an electric air-conditioning compressor EAC.

3. The method according to claim 1, characterized in that The VCU performs fault processing on the first high-voltage interlock fault message according to the vehicle state of the vehicle, including: If the VCU determines that the vehicle state is the driving state, it will perform a first high-voltage interlock fault prompt and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and at the end of the countdown, control the power system to stop working.

4. The method according to claim 3, characterized in that: The VCU performs fault processing on the first high-voltage interlock fault message according to the vehicle state of the vehicle, including: If the VCU determines that the vehicle state is a parking state, a first high-voltage interlock fault prompt is issued through at least one of a dashboard display screen, a central control screen, and a head-up display screen HUD of the vehicle.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: The VCU receives a second high-voltage interlock fault message sent by the on-board charging unit CDU; If the VCU determines that the vehicle state is the driving state, it will issue a high-voltage interlock fault prompt of the on-board charger and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and control the power system to stop working when the countdown ends.

6. A high voltage interlock detection device, characterized in that: The vehicle body domain controller VIU and a high-voltage component without a high-voltage interlock self-test function are connected in series to form a high-voltage interlock circuit. The device is applied to the VCU, and the device includes: A receiving module, configured to receive a first high-voltage interlock fault message sent from the VIU, wherein the VIU inputs a high-voltage interlock detection signal to the high-voltage interlock circuit and obtains a detection result, determines whether the high-voltage interlock circuit has a high-voltage interlock fault according to the detection result, and sends the message to the VCU if the high-voltage interlock circuit has a high-voltage interlock fault; A processing module is used to perform fault processing on the first high-voltage interlock fault message according to the vehicle state of the vehicle.

7. The method according to claim 6, characterized in that The high-voltage components that do not have the high-voltage interlock self-test function include one or more of a power distribution unit PDU, a high-voltage heater HVH, and an electric air-conditioning compressor EAC.

8. The device according to claim 6, characterized in that The processing module is used for: If the VCU determines that the vehicle state is the driving state, it will perform a first high-voltage interlock fault prompt and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and at the end of the countdown, control the power system to stop working.

9. The device according to claim 8, characterized in that The processing module is used for: If the VCU determines that the vehicle state is a parking state, a first high-voltage interlock fault prompt is issued through at least one of a dashboard display screen, a central control screen, and a head-up display screen HUD of the vehicle.

10. The device according to any one of claims 6 to 9, characterized in that: The receiving module is further used for: Receiving a second high voltage interlock fault message sent by the on-board charging unit CDU; The processing module is further used for: If the VCU determines that the vehicle state is the driving state, it will issue a high-voltage interlock fault prompt of the on-board charging unit and a countdown for the power system to stop working through at least one of the vehicle's instrument panel display screen, central control screen and head-up display screen HUD, and control the power system to stop working when the countdown ends.

11. A vehicle controller, characterized in that: The vehicle controller includes a processing circuit and a storage circuit, wherein the storage circuit stores at least one instruction, and the instruction is loaded and executed by the processing circuit to implement the operation performed by the high-voltage interlock detection method as described in any one of claims 1 to 5.

12. A computer-readable storage medium, characterized in that: At least one instruction is stored in the storage medium, and the instruction is loaded and executed by the vehicle controller to implement the operation performed by the high-voltage interlock detection method according to any one of claims 1 to 5.

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