Power supply control circuit, method, equipment and vehicle

Abstract

The invention relates to a power supply control circuit, method and device and a vehicle. The power supply control circuit comprises a control unit, a detection unit and a switch unit. The first end of the switch unit is electrically connected with a low-voltage power supply in the vehicle, the second end of the switch unit is electrically connected with a load device in the vehicle, the first end of the detection unit is electrically connected between the low-voltage power supply and the first end of the switch unit, the second end of the detection unit is electrically connected with the first end of the control unit, and the second end of the control unit is electrically connected with the switch unit; the detection unit is used for detecting signal parameters corresponding to the low-voltage power supply, and the signal parameters indicate whether power connection between the low-voltage power supply and the load device is completed; and the control unit is used for controlling the switch unit to be switched on when determining that the signal parameter indicates that the power connection is completed, so that the low-voltage power supply supplies power to the load device. On the basis of the scheme, the situation that a low-voltage power supply is unstable due to manual power connection in the process of dismounting, overhauling and debugging of the vehicle, and dismounting, overhauling and debugging are affected can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a power supply control circuit, method, device and vehicle. BACKGROUND

[0002] The vehicle will experience the conditions of manual power-on of low-voltage power supply, manual disassembly and assembly of controller under power in the factory assembly, after-sales maintenance and design debugging stage. Under the above working conditions, the low-voltage power supply of the vehicle is unstable, which will cause the load device such as ECU (Electronic Control Unit) to be unable to work normally due to protection for detecting low-voltage power supply undervoltage, affecting disassembly, repair, debugging. SUMMARY

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a power supply control circuit, method, device and vehicle.

[0004] In a first aspect, the present application provides a power supply control circuit, which comprises a control unit, a detection unit and a switching unit;

[0005] The first end of the switching unit is electrically connected to the low-voltage power supply in the vehicle, the second end of the switching unit is electrically connected to the load device in the vehicle, the first end of the detection unit is electrically connected between the low-voltage power supply and the first end of the switching unit, the second end of the detection unit is electrically connected to the first end of the control unit, and the second end of the control unit is electrically connected to the switching unit;

[0006] The detection unit is configured to detect a signal parameter corresponding to the low-voltage power supply, and the signal parameter indicates whether the power-on of the low-voltage power supply and the load device is completed.

[0007] The control unit is configured to control the switching unit to be turned on when it is determined that the signal parameter indicates that the power-on is completed, so that the low-voltage power supply supplies power to the load device.

[0008] In a second aspect, the present application further provides a power supply control method, which is applied to the power supply control circuit of the first aspect, and the method comprises:

[0009] Detecting a signal parameter of the low-voltage power supply;

[0010] Based on the signal parameter, when it is determined that the power-on of the low-voltage power supply and the load device is completed, the low-voltage power supply supplies power to the load device.

[0011] Optionally, the signal parameter of the low-voltage power supply includes a power supply voltage corresponding to the low-voltage power supply after the vehicle is powered on and / or a duration of the power supply voltage; and the controlling the low-voltage power supply to supply power to the load device based on the determination that the low-voltage power supply and the load device are connected and powered on together includes:

[0012] The low-voltage power supply is determined to be manually connected and stabilized based on the power supply voltage of the low-voltage power supply after the vehicle is powered on and / or the duration of the power supply voltage meeting a power supply condition, and the low-voltage power supply is controlled to supply power to the load device in the vehicle.

[0013] Optionally, the determination that the power supply voltage of the low-voltage power supply after the vehicle is powered on and / or the duration of the power supply voltage meeting the power supply condition includes:

[0014] The power supply condition is determined to be met based on the power supply voltage being greater than or equal to a voltage threshold value and the duration of the power supply voltage being greater than or equal to a first duration threshold value corresponding to the power supply voltage being greater than or equal to the voltage threshold value.

[0015] Optionally, the method further includes:

[0016] The power supply voltage is determined to be faulty based on the duration of the power supply voltage being greater than or equal to a second duration threshold value corresponding to the power supply voltage being less than the voltage threshold value and the number of consecutive times that the power supply voltage is less than the voltage threshold value being greater than or equal to a number threshold value.

[0017] Optionally, the detecting the signal parameter of the low-voltage power supply includes:

[0018] The signal parameter of the low-voltage power supply is acquired according to a detection period;

[0019] The detection period is less than a minimum value of the duration of the power supply voltage being less than the voltage threshold value.

[0020] In a third aspect, the present application also provides an electronic device, including a processor and a memory;

[0021] The processor is configured to execute the steps of the method according to any one of the second aspect by invoking programs or instructions stored in the memory.

[0022] In a fourth aspect, the present application also provides a vehicle including the electronic device according to the third aspect.

[0023] Optionally, the vehicle further includes a central gateway;

[0024] The central gateway is configured to control the load device to adjust to a sleep mode after determining that the low-voltage power supply supplies power to the load device.

[0025] Optionally,

[0026] The central gateway is further configured to control the load device to exit the sleep mode after determining that the vehicle completes the disassembly, repair and debugging.

[0027] The application provides a power supply control circuit, method, device and vehicle. The power supply control circuit comprises a control unit, a detection unit and a switching unit; a first end of the switching unit is electrically connected to a low-voltage power supply in the vehicle, a second end of the switching unit is electrically connected to a load device in the vehicle, a first end of the detection unit is electrically connected between the low-voltage power supply and the first end of the switching unit, a second end of the detection unit is electrically connected to a first end of the control unit, and a second end of the control unit is electrically connected to the switching unit; the detection unit is configured to detect a signal parameter corresponding to the low-voltage power supply, the signal parameter indicating whether the power connection of the low-voltage power supply and the load device is completed; and the control unit is configured to control the switching unit to be turned on when it is determined that the signal parameter indicates that the power connection is completed, so that the low-voltage power supply supplies power to the load device. Based on the above scheme, during the disassembly, repair and debugging of the vehicle, even if the low-voltage power supply is manually powered on, the low-voltage power supply can be controlled to supply power to the load device in the vehicle after it is determined that the low-voltage power supply meets the power supply condition, thereby avoiding the instability of the low-voltage power supply caused by manual power connection, and further avoiding the problem that the load device cannot work normally due to protection caused by detection of low-voltage power supply and affecting the disassembly, repair and debugging. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A power supply control circuit structure schematic diagram is provided for the embodiment of the application.

[0029] Figure 2 A power supply control method flowchart is provided for the embodiment of the application.

[0030] Figure 3 A structure schematic diagram of an electronic device is provided for the embodiment of the application. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purposes, features and advantages of the application, the schemes of the application will be further described below. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth in order to provide a thorough understanding of the application, but the application can also be implemented in other ways different from those described herein; obviously, the embodiments in the description are only some of the embodiments of the application, not all the embodiments.

[0033] Figure 1A power supply control circuit structure schematic diagram provided by an embodiment of the present application, the power supply control circuit includes a control unit 101, a detection unit 102 and a switching unit 103.

[0034] The power supply control circuit includes a control unit 101, a detection unit 102 and a switching unit 103.

[0035] The first end of the switching unit 103 is electrically connected to the low-voltage power supply 100 in the vehicle, the second end of the switching unit 103 is electrically connected to the load device 300 in the vehicle, the first end of the detection unit 102 is electrically connected between the low-voltage power supply 100 and the first end of the switching unit 103, the second end of the detection unit 102 is electrically connected to the first end of the control unit 101, and the second end of the control unit 101 is electrically connected to the switching unit 103.

[0036] The detection unit 102 is used to detect a signal parameter corresponding to the low-voltage power supply 100, and the signal parameter indicates whether the power connection of the low-voltage power supply 100 and the load device 300 is completed.

[0037] The control unit 101 is used to control the switching unit 103 to be turned on when it is determined that the signal parameter indicates that the power connection is completed, so that the low-voltage power supply 100 supplies power to the load device 300.

[0038] Specifically, the power supply control circuit provided by the embodiment of the present application is applied to a vehicle, and more specifically, is applied to a scenario in which the load device 300 is manually connected to the low-voltage power supply 100 in the vehicle during disassembly, repair, debugging and the like. Manual power connection has the problem of unstable connection. If the load device 300 is directly started under the condition of unstable connection, the load device 300 may not work normally due to unstable power supply of the low-voltage power supply 100, affecting disassembly, repair, debugging and the like, and even causing damage.

[0039] The low-voltage power supply 100 in the embodiment of the present application can refer to a low-voltage battery in the vehicle, such as a 12V, 24V or 48V battery. The load device 300 in the embodiment of the present application represents a functional device in the vehicle that operates based on the power supply of the low-voltage power supply 100, such as an ECU and the like.

[0040] In order to solve the above technical problem, the embodiment of the present application can set a switching unit 103 between the low-voltage power supply 100 and the load device 300, and the switching unit 103 can be a controlled switch. When the switching unit 103 is turned on, the low-voltage power supply 100 can supply power to the load device 300, and when the switching unit 103 is turned off, the low-voltage power supply 100 cannot supply power to the load device 300.

[0041] The detection unit 102 can transmit the signal parameter to the control unit 101 after detecting the signal parameter, and the control unit 101 determines whether the low-voltage power supply 100 supplies power stably based on the signal parameter, and controls the switch unit 103 to be turned on after determining that the low-voltage power supply 100 supplies power stably, so as to realize the power supply of the low-voltage power supply 100 to the load device 300. The control unit 101, the detection unit 102 and the switch unit 103 can be integrated in the same electronic device, for example, it can be a LVBMS (Low Voltage Battery Management System).

[0042] The signal parameter in the embodiment of the application can be used to measure whether the low-voltage power supply can supply power stably, for example, voltage and the like. After it is determined through the power supply parameter that the low-voltage power supply 100 meets the power supply condition, i.e., the low-voltage power supply 100 can supply power stably, the low-voltage power supply 100 is controlled to supply power to the load device 300 in the vehicle. The method for detecting the low-voltage power supply can be hardware power filtering, software power filtering, analog quantity monitoring, digital quantity monitoring and the like, which is not limited here.

[0043] Based on the above scheme, during the disassembly, repair, debugging process of the vehicle, even if the low-voltage power supply is manually powered, the low-voltage power supply can be controlled to supply power to the load device in the vehicle after it is determined that the low-voltage power supply meets the power supply condition through the above scheme, which avoids the problem that the load device cannot work normally and affects the disassembly, repair and debugging due to the protection of the load device caused by the unstable low-voltage power supply caused by manual power supply.

[0044] Figure 2 A power supply control method flow diagram is provided for the embodiment of the application, and the power supply control method is applied to the above power supply control circuit. The method comprises:

[0045] S201, detecting a signal parameter of a low-voltage power supply.

[0046] S202, based on the signal parameter, determining that the low-voltage power supply and the load device are powered on, and controlling the low-voltage power supply to supply power to the load device.

[0047] The power supply control method provided by the embodiment of the application is applied to the above power supply control circuit, and has at least part of the same technical features as the above power supply control circuit, so as to achieve the same technical effects as the above power supply control circuit. The power supply control method can be executed by the LVBMS in the above power supply control circuit embodiment, and more specifically, can be executed by the control unit in the LVBMS.

[0048] In some embodiments, the signal parameter of the low-voltage power supply includes a power supply voltage corresponding to the low-voltage power supply after the vehicle is powered on and / or a duration of the power supply voltage. Based on determining that the low-voltage power supply and the load device are connected and powered on, the low-voltage power supply is controlled to supply power to the load device, including:

[0049] Based on the power supply voltage of the low-voltage power supply and / or the duration of the power supply voltage after the vehicle is powered on satisfying the power supply condition, it is determined that the low-voltage power supply is manually connected and stable, and the low-voltage power supply is controlled to supply power to the load device in the vehicle.

[0050] Specifically, the embodiments of the present application can determine whether the low-voltage power supply satisfies the power supply condition by detecting the low-voltage power supply voltage and / or the duration of the power supply voltage after the vehicle is powered on. If the low-voltage power supply is unstable, the power supply voltage of the low-voltage power supply is unstable or small.

[0051] For example, after determining that the low-voltage power supply is at a certain voltage for a certain duration, it is determined that the low-voltage power supply is stable, i.e., satisfies the power supply condition, and then the low-voltage power supply can be controlled to supply power to the load device in the vehicle.

[0052] Therefore, the embodiments of the present application can more accurately determine whether the low-voltage power supply is stable by the above scheme, and then more accurately supply power to the load device, avoiding the problem that the load device cannot work normally or affects disassembly, maintenance and debugging due to unstable connection of the low-voltage power supply.

[0053] In some embodiments, based on the power supply voltage of the low-voltage power supply and / or the duration of the power supply voltage after the vehicle is powered on satisfying the power supply condition, including:

[0054] Based on the power supply voltage being greater than or equal to a voltage threshold and the duration of the power supply voltage being greater than or equal to a first duration threshold corresponding to the voltage threshold, it is determined that the power supply condition is satisfied.

[0055] Specifically, the voltage threshold in the embodiments of the present application can represent the external discharge voltage of the low-voltage power supply when it is normally powered. If the low-voltage power supply is connected and stable, and can stably discharge externally, the power supply voltage should be maintained above the voltage threshold, which can be A. If the low-voltage power supply is a 48V low-voltage battery, the external discharge voltage of the low-voltage power supply can be 48V in the case of normal external discharge, and the voltage threshold can be 48V. Similarly, if the low-voltage power supply is a 24V low-voltage battery, the voltage threshold can be 24V.

[0056] The embodiment of the present application can continuously detect the power supply voltage of the low-voltage power supply, to determine whether the power supply voltage is greater than or equal to the voltage threshold, and in the case of determining that the power supply voltage is greater than or equal to the voltage threshold, the duration of the power supply voltage being greater than the voltage threshold is counted. In the case of unstable connection of the low-voltage power supply, the power supply voltage corresponding to the low-voltage power supply will be intermittent due to unstable connection of the connection point, for example, the power supply voltage is continuously output for a period of time, then the output of the power supply voltage is stopped due to the disconnection of the connection point, and then the output of the power supply voltage is continued due to the reconnection of the connection point, and the power supply voltage cannot be in a stable state for a long time. The first duration threshold is used as a measurement standard in the embodiment of the present application to determine whether the low-voltage power supply can stably output the power supply voltage. The first duration threshold can be 100 ms, and if the power supply voltage V is greater than or equal to A and can be maintained for more than 100 ms, the control unit can determine that the low-voltage power supply meets the power supply condition. Otherwise, if the power supply voltage V is less than A, or V is greater than A but the duration is less than 100 ms, the control unit still determines that the power supply condition is not met.

[0057] Based on the above scheme, the embodiment of the present application can accurately determine whether the low-voltage power supply meets the power supply condition.

[0058] In some embodiments, the method further comprises:

[0059] Determining that the duration of the power supply voltage being less than the voltage threshold is greater than or equal to a second duration threshold, and the number of consecutive times of the power supply voltage being less than the voltage threshold is greater than or equal to a number threshold, determines that the power supply voltage is out of order.

[0060] In the embodiment of the present application, the low-voltage power supply may not be able to stably supply power, which can be referred to as power supply failure. In order to accurately determine whether the low-voltage power supply has a power supply failure, the embodiment of the present application can determine it through the power supply voltage and the duration of the power supply voltage.

[0061] For example, if it is detected that the power supply voltage V is less than the voltage threshold A, and it is detected that the duration of the power supply voltage V being less than the voltage threshold A for three consecutive times is greater than or equal to the second duration threshold (for example, 30us), it can be determined that the power supply voltage has a power supply failure, that is, does not meet the power supply condition.

[0062] On the contrary, if the power supply voltage V is not less than the voltage threshold A, and it is detected that the duration of the power supply voltage V being less than the voltage threshold A for three consecutive times is greater than or equal to the second duration threshold, it is determined that the power supply voltage does not have a power supply failure. For example, it is detected that the power supply voltage V is less than the voltage threshold A, but only the duration of the power supply voltage V being less than the voltage threshold A for two consecutive times is greater than or equal to the second duration threshold, it is still determined that the power supply voltage does not have a power supply failure.

[0063] In combination with the above embodiments, it is understood that, in the determination that the power supply voltage is greater than or equal to the voltage threshold, and the duration for which the power supply voltage is greater than or equal to the voltage threshold is greater than or equal to the first duration threshold, there can be a case where the power supply voltage is less than the voltage threshold, but the duration for which the power supply voltage is less than the voltage threshold is less than the second duration threshold, and in this case, it is still determined that the power supply condition is met. Based on the above scheme, false positives can be effectively avoided.

[0064] In some embodiments, the signal parameter of the low-voltage power supply is acquired, including:

[0065] The signal parameter of the low-voltage power supply is acquired according to a detection period.

[0066] The detection period is less than the minimum duration for which the power supply voltage is less than the voltage threshold.

[0067] Specifically, the signal parameter of the low-voltage power supply is acquired according to a detection period in the embodiments of the present application. In actual scenarios, even if the low-voltage power supply is abnormally powered off, i.e., the power supply voltage is less than the voltage threshold, the duration is predictable. For example, after manual power connection, even if the manual connection is unstable, the minimum duration for which the power supply voltage is less than the voltage threshold is generally between 50us and 1ms. The detection period can be set to 10us, which is much less than the minimum duration for which the power supply voltage is less than the voltage threshold. The detection unit detects the signal parameter at a frequency higher than the minimum duration for which the power supply voltage is less than the voltage threshold. Thus, various abnormal power-off scenarios caused by unstable power connection can be met, and the abnormal power-off scenario of the low-voltage power supply can be accurately detected, avoiding missed detection.

[0068] The embodiments of the present application also provide a computer-readable storage medium, which stores programs or instructions, and the programs or instructions cause a computer to execute the steps of any one of the methods provided by the above embodiments.

[0069] In some embodiments, the computer executable instructions, when executed by the computer processor, can also be used to execute the technical solutions of the above power supply control method provided by the embodiments of the present application, and realize the corresponding beneficial effects.

[0070] The embodiments of the present application also provide an electronic device, which includes a processor and a memory. The processor is configured to execute the steps of any one of the methods provided by the above embodiments by invoking programs or instructions stored in the memory, and realize the corresponding beneficial effects.

[0071] Figure 3 A structural schematic diagram of an electronic device provided by the embodiments of the present application is shown in FIG. 1. Figure 3 As shown in FIG. 1, the electronic device includes one or more processors 301 and a memory 302.

[0072] The processor 301 can be a central processing unit (CPU) or other form of processing unit having data processing and / or instruction executing capabilities, and can control other components in the electronic device to perform desired functions.

[0073] The memory 302 can include one or more computer program products that can include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory, for example, can include random access memory (RAM), cache memory, and / or the like. The non-volatile memory, for example, can include read-only memory (ROM), hard disk, flash memory, and / or the like. One or more computer program instructions can be stored on the computer-readable storage media, and the processor 301 can execute the program instructions to implement the methods of the above embodiments of the present application, and / or other desired functions. Various contents such as input signals, signal components, noise components, and the like can also be stored in the computer-readable storage media.

[0074] In one example, the electronic device can further include an input device 303 and an output device 304, which are interconnected through a bus system and / or other forms of connection mechanism (not shown).

[0075] In addition, the input device 303 can further include, for example, a keyboard, a mouse, and the like.

[0076] The output device 304 can output various information to the outside, including the determined distance information, direction information, and the like. The output device 304 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0077] Of course, in order to simplify, Figure 3 Only some of the components in the electronic device related to the present application are shown in the above embodiment, and components such as buses, input / output interfaces, and the like are omitted. In addition, the electronic device can further include any other appropriate components according to specific application cases.

[0078] It should be noted that the above electronic device can be provided in a vehicle, and can be provided in a vehicle system, for example, a battery management system; or can be other terminal devices outside the vehicle, for example, a mobile phone, a computer, a smart wearable device, and other electronic devices, which are not limited herein.

[0079] The embodiments of the present application also provide a vehicle including the electronic device in the above embodiments, which achieves the same or at least similar technical effects as the above electronic device.

[0080] In some embodiments, the vehicle can further include a central gateway.

[0081] The central gateway is configured to control the load device to adjust to the sleep mode after determining that the low-voltage power supply supplies power to the load device.

[0082] Specifically, it is found through research that the electrical performance robustness of the load device (e.g., ECU) in the working state is low and the load device is more likely to be damaged by ESD (Electrostatic Discharge).

[0083] To this end, the embodiments of the present application can also control the load device (e.g., ECU) to enter a sleep mode by the central gateway in the vehicle after the load device is powered on. The sleep mode can refer to the sleep mode of the load device (e.g., ECU) in the existing vehicle. In the sleep mode, all low-voltage load devices in the vehicle are in a low-power sleep state, which can improve the electrical performance robustness of the load device in the maintenance, assembly and debugging state.

[0084] Based on the above scheme, the self-protection and damage of the load device caused by the low-voltage power supply jitter or ESD problem in the vehicle in the maintenance, assembly or debugging scenario can be effectively reduced or eliminated.

[0085] In some embodiments, the central gateway is further configured to control the load device to exit the sleep mode after determining that the vehicle completes the disassembly, repair, debugging and the like.

[0086] Specifically, the embodiments of the present application can also control the load device to exit the sleep mode by the central gateway after the vehicle completes the maintenance, assembly and debugging and the like in the abnormal working condition. For example, the central gateway can wake up all associated ECUs of the vehicle through the vehicle network, which includes but is not limited to Ethernet, CAN, LIN and the like. In this way, the load device in the vehicle can continue to be used normally, and manual adjustment is avoided. However, it should be noted that the embodiments of the present application can also control the load device to exit the sleep mode through manual adjustment.

[0087] It should be noted that, in the present document, relational terms such as“first” and“second”, and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms“comprises”,“comprising”,“includes”,“including” or any other variation thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without limitation, an element preceded by“comprises a” does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0088] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical schemes after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A power supply control circuit, characterized by comprising: The power supply control circuit comprises a control unit, a detection unit and a switching unit; The first end of the switching unit is electrically connected to a low-voltage power supply in the vehicle, the second end of the switching unit is electrically connected to a load device in the vehicle, the first end of the detection unit is electrically connected between the low-voltage power supply and the first end of the switching unit, the second end of the detection unit is electrically connected to the first end of the control unit, and the second end of the control unit is electrically connected to the switching unit; The detection unit is configured to detect a signal parameter corresponding to the low-voltage power supply, and the signal parameter indicates whether the low-voltage power supply and the load device are connected. The control unit is configured to control the switching unit to be turned on when it is determined that the signal parameter indicates that the connection is completed, so that the low-voltage power supply supplies power to the load device.

2. A power supply control method characterized by, The method is applied to the power supply control circuit of claim 1, and the method comprises: detecting a signal parameter of the low-voltage power supply; controlling the low-voltage power supply to supply power to the load device when it is determined that the low-voltage power supply and the load device are connected based on the signal parameter.

3. The method of claim 2, wherein, The signal parameter of the low-voltage power supply comprises a power supply voltage corresponding to the low-voltage power supply after the vehicle is powered on and / or a duration of the power supply voltage; The control of the low-voltage power supply to supply power to the load device when it is determined that the low-voltage power supply and the load device are connected based on the signal parameter comprises: controlling the low-voltage power supply to supply power to the load device in the vehicle based on the power supply voltage of the low-voltage power supply after the vehicle is powered on and / or the duration of the power supply voltage satisfying a power supply condition.

4. The method of claim 3, wherein, The control of the low-voltage power supply to supply power to the load device when it is determined that the low-voltage power supply and the load device are connected based on the signal parameter comprises: determining that the power supply condition is satisfied based on the power supply voltage being greater than or equal to a voltage threshold value and the duration of the power supply voltage being greater than or equal to a first time threshold value when the power supply voltage corresponding to the voltage threshold value is greater than or equal to the duration.

5. The method of claim 3, wherein, The method further comprises: determining that the power supply voltage fails to supply power based on the duration of the power supply voltage being greater than or equal to a second time threshold value when the power supply voltage is less than a voltage threshold value and the number of times that the power supply voltage is less than the voltage threshold value is greater than or equal to a number threshold value.

6. The method of claim 5, wherein, The detection of the signal parameter of the low-voltage power supply comprises: acquiring the signal parameter of the low-voltage power supply according to a detection period; wherein the detection period is less than the minimum value of the duration of the power supply voltage being less than the voltage threshold value.

7. An electronic device, comprising: comprises: a processor and a memory; the processor is configured to execute the steps of the method of any one of claims 2 to 6 by invoking programs or instructions stored in the memory.

8. A vehicle characterized by comprising: comprises the electronic device of claim 7.

9. The vehicle of claim 8, wherein, The vehicle further comprises a central gateway; the central gateway is configured to control the load device to adjust to a sleep mode after determining that the low-voltage power supply supplies power to the load device.

10. The vehicle of claim 9, wherein the central gateway is further configured to control the load device to exit the sleep mode after determining that the vehicle completes disassembly, repair, debugging.

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