Low-voltage power supply abnormity processing method and device, electronic equipment and storage medium

Abstract

The invention provides a low-voltage power supply abnormity processing method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining low-voltage power supply information corresponding to a low-voltage power supply system when a vehicle is in a high-voltage power-on state; judging whether the low-voltage power supply system is abnormal or not according to the low-voltage power supply information; when the low-voltage power supply system is abnormal, determining a power shortage risk level corresponding to the storage battery according to the low-voltage power supply information; and adjusting the starting state or the starting gear of each low-voltage device according to the power shortage risk level, and outputting early warning information corresponding to the power shortage risk level. When the low-voltage power supply system is abnormal, the starting state of each low-voltage device can be subjected to automatic hierarchical control, the low-voltage power consumption of the whole vehicle is effectively reduced, the power supply duration of the storage battery is prolonged, and meanwhile, by outputting the early warning information corresponding to the low-voltage risk level, a driver can take different driving measures, and driving safety is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a method, device, electronic device and storage medium for handling abnormal low-voltage power supply. Background Art

[0002] With the development of smart cockpits and smart driving, the power supply system is becoming more and more important. The power supply system needs to supply power reliably according to demand. If an abnormal fault occurs, it needs to be reported as soon as possible to avoid affecting driving safety. Among them, the low-voltage power supply system in the power supply system includes batteries and direct current converters (Direct Current-Direct Current, DCDC). DCDC can convert the high-voltage electricity of the high-voltage battery pack into low-voltage electricity. Before the high voltage is applied to the vehicle, the battery powers the basic low-voltage equipment used for starting and parking the vehicle. After the high voltage is applied to the vehicle, the low-voltage electricity output by the DCDC directly powers the various low-voltage devices of the vehicle and charges the battery.

[0003] If the DCDC fails after the high voltage is applied to the vehicle, it will not be able to supply power to the low-voltage equipment. At this time, the battery will take on the task of supplying power to the low-voltage equipment. Due to the limited power supply capacity of the battery, at this time, if there are many low-voltage devices that need to be powered, their power will be exhausted quickly. After the battery is exhausted, not only will the low-voltage equipment fail to work, but it will also affect the normal starting of the vehicle, which is likely to cause user complaints. Summary of the invention

[0004] The embodiments of the present application provide a method, device, electronic device and storage medium for handling a low-voltage power supply anomaly, so as to solve the problem of how to extend the power supply time of a battery.

[0005] In a first aspect, an embodiment of the present application provides a method for handling a low-voltage power supply abnormality, the method comprising:

[0006] When the vehicle is in a high-voltage power-on state, obtaining low-voltage power supply information corresponding to a low-voltage power supply system, wherein the low-voltage power supply system includes a DC converter and a battery, and the low-voltage power supply system is used to supply power to each low-voltage device in the vehicle that is in an on state;

[0007] According to the low-voltage power supply information, determining whether the low-voltage power supply system is abnormal;

[0008] When an abnormality occurs in the low-voltage power supply system, determining the power shortage risk level corresponding to the battery according to the low-voltage power supply information;

[0009] The opening state or opening gear of each low-voltage device is adjusted according to the power failure risk level, and warning information corresponding to the power failure risk level is output.

[0010] In a second aspect, an embodiment of the present application further provides a low-voltage power supply abnormality processing device, the device comprising:

[0011] A first acquisition module is used to acquire low-voltage power supply information corresponding to a low-voltage power supply system when the vehicle is in a high-voltage power-on state, wherein the low-voltage power supply system includes a DC converter and a battery, and the low-voltage power supply system is used to supply power to each low-voltage device in the vehicle that is in an on state;

[0012] A judging module, used for judging whether an abnormality occurs in the low-voltage power supply system according to the low-voltage power supply information;

[0013] A determination module, configured to determine, when an abnormality occurs in the low-voltage power supply system, a power shortage risk level corresponding to the battery according to the low-voltage power supply information;

[0014] The processing module is used to adjust the opening state or opening gear of each low-voltage device according to the power-loss risk level, and output warning information corresponding to the power-loss risk level.

[0015] In a third aspect, an embodiment of the present application further provides an electronic device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the above-mentioned low-voltage power supply abnormality handling method when executed by the processor.

[0016] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned low-voltage power supply exception processing method is implemented.

[0017] The embodiments of the present application include at least the following technical effects:

[0018] The technical solution of the embodiment of the present application obtains low-voltage power supply information corresponding to the low-voltage power supply system when the vehicle is in a high-voltage power-on state to determine whether the low-voltage power supply system has an abnormality. Therefore, when the low-voltage power supply system has an abnormality and the low-voltage equipment of the vehicle is powered by a battery, the battery low-power risk level can be determined, and then the start-up state or start-up gear of each low-voltage equipment can be adjusted according to the battery low-power risk level. This realizes automatic graded control of the start-up state of each low-voltage equipment when the low-voltage power supply system has an abnormality, effectively reduces the low-voltage power consumption of the whole vehicle, and extends the power supply time of the battery. At the same time, by outputting warning information corresponding to the low-power risk level, the driver can take different driving measures to ensure driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0020] Figure 1 It is a flowchart of a method for handling low-voltage power supply abnormality provided in an embodiment of the present application;

[0021] Figure 2 It is a structural schematic diagram of a low-voltage power supply abnormality processing device provided in an embodiment of the present application;

[0022] Figure 3 A block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0025] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0026] like Figure 1 As shown, an embodiment of the present application provides a method for handling low-voltage power supply abnormality, the method comprising:

[0027] Step 101: When the vehicle is in a high-voltage power-on state, obtain low-voltage power supply information corresponding to the low-voltage power supply system, wherein the low-voltage power supply system includes a DC converter and a battery, and the low-voltage power supply system is used to supply power to various low-voltage devices in the vehicle that are in an on state.

[0028] The low-voltage power supply abnormality processing method provided in the embodiment of the present application is applied to a power supply controller, which may be a central controller.

[0029] Specifically, the power controller can obtain low-voltage power supply information corresponding to the low-voltage power supply system when the vehicle is in a high-voltage power-on state. The low-voltage power supply system is used to supply power to various low-voltage devices in the vehicle that are in the turned-on state. The low-voltage power supply system includes a direct current converter, namely DCDC, and a battery.

[0030] The low-voltage power supply information includes the requested voltage of the low-voltage device, the power supply information corresponding to the DCDC, and the power supply information corresponding to the battery. Among them, the power supply information corresponding to the DCDC includes at least the status information of the DCDC self-diagnosis after the high voltage is powered on. The status information is used to indicate whether the DCDC has self-detected a fault, and also includes the output voltage value and actual output current value corresponding to the DCDC. The power supply information corresponding to the battery includes at least the voltage value, charge and discharge current value, and power output of the battery.

[0031] Step 102: Determine whether the low-voltage power supply system is abnormal based on the low-voltage power supply information.

[0032] Specifically, the power controller can determine whether the low-voltage power supply system is abnormal based on the acquired low-voltage power supply information. When the low-voltage power supply system is abnormal, the DCDC in the low-voltage power supply system will not be able to supply power to the low-voltage device, and the power supply of the low-voltage device will be switched to the battery in the low-voltage power supply system.

[0033] Step 103: When an abnormality occurs in the low-voltage power supply system, the corresponding power-deficit risk level of the battery is determined according to the low-voltage power supply information.

[0034] Since the battery's power supply capacity is limited, at this time, if there are many low-voltage devices that need to be powered, the power will be exhausted quickly. After the battery is exhausted, not only will the low-voltage devices fail to work, but it will also affect the normal starting of the vehicle.

[0035] In the embodiment of the present application, when the storage battery is used as the power supply source for the low-voltage equipment, the power shortage risk level corresponding to the storage battery is further determined according to the low-voltage power supply information.

[0036] Step 104: adjust the opening state or opening gear of each low-voltage device according to the power failure risk level, and output warning information corresponding to the power failure risk level.

[0037] After determining the battery power failure risk level, the opening state of each low-voltage device is adjusted according to the power failure risk level, that is, according to the battery power failure risk level, the opening state of each low-voltage device is automatically graded and controlled. For example, the low-voltage devices can be sorted from low to high according to their relevance to driving safety. According to the power failure risk level, the preset number of low-voltage devices ranked at the top are adjusted to the closed state, or the opening gear of the preset number of low-voltage devices ranked at the top is lowered. At the same time, after determining the battery power failure risk level, the warning information corresponding to the power failure risk level is output to remind the driver of the battery power failure risk level of the vehicle, so that the driver can take different countermeasures in time, thereby avoiding the driving safety problems caused by the abnormality of DCDC when the battery is powered by low voltage, such as driving to a designated point for maintenance or parking on the side of the road, thereby avoiding the driving safety problems caused by the abnormality of DCDC.

[0038] In the embodiment of the present application, when the vehicle is in a high-voltage power-on state, low-voltage power supply information corresponding to the low-voltage power supply system is obtained to determine whether the low-voltage power supply system has an abnormality. Therefore, when the low-voltage power supply system has an abnormality and the low-voltage equipment of the vehicle is powered by the battery, the battery low-power risk level can be determined, and then a preset number of low-voltage devices with a top ranking in terms of their turn-on status are adjusted according to the battery low-power risk level. This realizes automatic graded control of the turn-on status of each low-voltage device when an abnormality occurs in the low-voltage power supply system, effectively reducing the low-voltage power consumption of the entire vehicle and extending the power supply time of the battery. At the same time, by outputting warning information corresponding to the low-power risk level, the driver can take different driving measures to ensure driving safety.

[0039] In an optional embodiment of the present application, the low-voltage power supply information includes a requested voltage corresponding to the low-voltage system, first power supply information corresponding to the DC converter, and second power supply information corresponding to the battery, wherein the first power supply information includes a self-test state, a first output voltage, and a first output current, and the second power supply information includes a second output voltage, a second output current, and a remaining power; obtaining the low-voltage power supply information corresponding to the low-voltage power supply system includes:

[0040] Based on the connection with the low voltage system, obtaining a requested voltage of the low voltage system;

[0041] Based on the connection with the DC converter, acquiring the first power supply information;

[0042] Based on the connection with the battery, the second power supply information is acquired.

[0043] In the specific implementation process, the power controller is connected to the low-voltage system, the DC converter and the battery respectively. Through the connection with the low-voltage system, the requested voltage of the low-voltage system can be obtained. Through the connection with the DC converter, the first power supply information can be obtained, and the first power supply information here includes the self-test state, the first output voltage and the first output current. Through the connection with the battery, specifically the connection with the battery sensor, the second power supply information can be obtained, and the second power supply information here includes the second output voltage, the second output current and the remaining power.

[0044] The above implementation scheme of the present application obtains low-voltage power supply information based on the connection with the low-voltage system, the DC converter and the battery, so as to subsequently determine whether there is an abnormality in the low-voltage power supply system based on the low-voltage power supply information, and determine the battery power shortage risk level based on the low-voltage power supply information.

[0045] In an optional embodiment of the present application, judging whether the low-voltage power supply system is abnormal according to the low-voltage power supply information includes:

[0046] When the low-voltage power supply information satisfies at least one of the following conditions, it is determined that an abnormality occurs in the low-voltage power supply system:

[0047] The self-check state in the low-voltage power supply information is an abnormal state;

[0048] The duration for which the difference between the requested voltage and the first output voltage is greater than a first preset voltage threshold is greater than a first preset duration;

[0049] The first output current is less than a preset current threshold;

[0050] The duration for which the difference between the requested voltage and the second output voltage is greater than a second preset voltage threshold is greater than a second preset duration;

[0051] The second output current is greater than the preset current threshold.

[0052] In the specific implementation process, the power controller can judge the following conditions: judging whether the self-test state obtained by the DCDC self-diagnosis is an abnormal state, judging whether the duration of the difference between the request voltage and the first output voltage being greater than the first preset voltage threshold is greater than the first preset duration, judging whether the first output current is less than the preset current threshold, judging whether the duration of the difference between the request voltage and the second output voltage being greater than the second preset voltage threshold is greater than the second preset duration, and judging whether the second output current is greater than the preset current threshold. As an example, the above-mentioned first preset voltage threshold can be 0.3V, the second preset voltage threshold can be 0.5V, the first preset duration can be 30s, and the preset current threshold can be 10A. The above is only an example.

[0053] Among them, an abnormal flag bit can be set in the power controller. When there is no abnormality, the abnormal flag bit is 0. When the power controller detects that the low-voltage power supply information meets at least one of the above conditions, the abnormal flag bit can be set to 1.

[0054] The above implementation scheme of the present application analyzes the various parameters included in the low-voltage power supply information and integrates the data from the output end and the user end to determine whether there is an abnormality in the low-voltage power supply system, thereby reducing the risk of missed and misjudgment of power supply system faults.

[0055] In an optional embodiment of the present application, determining the power-deficit risk level corresponding to the battery according to the low-voltage power supply information includes:

[0056] Determine, based on the low-voltage power supply information, the duration of the abnormality in the low-voltage power supply system;

[0057] Determine the power consumption information corresponding to the battery according to the low-voltage power supply information, wherein the power consumption information includes power consumption, remaining power, and an average value of the second output voltage within a preset period;

[0058] The power shortage risk level is determined according to the duration and the power consumption information.

[0059] In the specific implementation process, the power controller can start timing when determining that an abnormality occurs in the low-voltage power supply system, and obtain the duration of the abnormality in the low-voltage power supply system. After the low-voltage power supply system is abnormal, the battery starts to supply power to the low-voltage equipment. At this time, the power controller further determines the power consumption information of the battery based on the low-voltage power supply information. The power consumption information here includes power consumption, remaining power, and the average value of the second output voltage within a preset period. The preset period can be set to 1 minute, that is, the average value of the second output voltage of the battery in the past minute is monitored.

[0060] Among them, the risk level of power shortage can be determined based on the duration of the abnormality in the low-voltage power supply system and the power consumption information of the battery.

[0061] The above implementation scheme of the present application determines the duration of the abnormality in the low-voltage power supply system and the corresponding power consumption information of the battery, and determines the risk level of power shortage, so as to facilitate the subsequent automatic hierarchical control of the opening status of each low-voltage device based on the power shortage level, so as to effectively reduce the low-voltage power consumption of the whole vehicle and extend the power supply time of the battery.

[0062] In an optional embodiment of the present application, determining the power shortage risk level according to the duration and the power consumption information includes:

[0063] When the duration is greater than the second preset duration and less than the third preset duration, determining the power failure risk level to be the first level;

[0064] When the duration is greater than the third preset duration, or the power consumption information satisfies at least one of the following conditions, the power shortage risk level is determined to be the second level:

[0065] The power consumption in the power consumption information is greater than the first power;

[0066] The remaining power in the power consumption information is less than the second power;

[0067] An average value of the second output voltage in the power consumption information within a preset period is less than a third preset voltage threshold.

[0068] Specifically, when determining the power shortage risk level, taking into account that the abnormality in the low-voltage power supply system may be self-recoverable, the lower limit value of the duration of the abnormality in the low-voltage power supply system in the first level can be set to the second preset duration. In other words, the power shortage risk level is determined only when the duration is greater than the second preset duration.

[0069] Among them, when the duration is greater than the second preset duration and less than the third preset duration, the power shortage risk level is the first level.

[0070] When the duration exceeds the third preset duration, or the power consumption is greater than the first power, or the remaining power is less than the second power, or the average value of the second output voltage within the preset period is less than the third preset voltage threshold, the power shortage risk level is the second level.

[0071] The above implementation scheme of the present application, by determining the power failure risk level, facilitates the subsequent automatic hierarchical control of the opening status of each low-voltage device based on the power failure level, so as to effectively reduce the low-voltage power consumption of the whole vehicle and extend the power supply time of the battery.

[0072] In an optional embodiment of the present application, adjusting the start state or start gear of each low-voltage device according to the power failure risk level includes:

[0073] Obtain a list of target low-voltage devices corresponding to the power failure risk level;

[0074] Determine the low-voltage equipment belonging to the target low-voltage equipment list among the low-voltage equipment as the low-voltage equipment to be adjusted;

[0075] When the low-voltage device to be adjusted is a downshiftable device, lowering the opening gear position of the low-voltage device to be adjusted;

[0076] When the low-voltage device to be regulated is a device that cannot be downshifted, the low-voltage device to be regulated is turned off.

[0077] In an embodiment of the present application, the low-voltage devices included in the vehicle that can be turned off or lowered during driving can be pre-sorted and grouped based on the relevance to driving safety for different driving conditions. Exemplarily, when the risk level of power shortage includes the first level and the second level, the low-voltage devices that can be turned off or lowered during driving are divided into two groups, the first level corresponds to the first group, and the second level corresponds to the second group. Exemplarily, the devices in the first group may include ambient lights, seat heaters, car audio, car screens, air conditioners, etc. The devices in the second group may include intelligent driving domain controllers, laser radars, millimeter-wave radars, entertainment systems, interior lights, other screens other than instruments and central controls, air conditioners, rear defrost devices, and rearview mirror heating devices. In addition, for different driving conditions, the order of arrangement of the low-voltage devices based on the relevance to driving safety may be different.

[0078] In the specific implementation process, after determining the power shortage risk level, the target low-voltage equipment list can be determined based on the above relationship. When the power shortage risk level is the first level, the target low-voltage equipment list is the low-voltage equipment in the first group, and when the power shortage risk level is the second level, the target low-voltage equipment list is the low-voltage equipment in the second group.

[0079] After obtaining the target low-voltage device list, the low-voltage devices in the target low-voltage device list are determined as the low-voltage devices to be adjusted, where each low-voltage device is a low-voltage device in an on state. The low-voltage devices to be adjusted obtained here can be multiple or one.

[0080] After determining the low-voltage device to be adjusted, determine the type of the low-voltage device to be adjusted, that is, whether it is a downshiftable device. Specifically, when the low-voltage device to be adjusted is a downshiftable device, reduce the on gear of the low-voltage device to be adjusted; when the low-voltage device to be adjusted is a non-downshiftable device, turn off the low-voltage device to be adjusted. For example, when the low-voltage device to be adjusted is an ambient light, turn off the device directly; when the low-voltage device to be adjusted is a seat heater, reduce the on gear of the seat heater.

[0081] The above implementation scheme of the present application obtains a list of target low-voltage equipment corresponding to the power shortage risk level, and determines the low-voltage equipment belonging to the target low-voltage equipment list among the low-voltage equipment as the low-voltage equipment to be adjusted, and further determines to adjust the opening gear or opening state of the low-voltage equipment to be adjusted according to whether the low-voltage equipment to be adjusted is a downshiftable equipment, thereby effectively reducing the low-voltage power consumption of the whole vehicle, extending the power supply time of the battery, and ensuring driving safety.

[0082] In an optional embodiment of the present application, outputting warning information corresponding to the power failure risk level includes:

[0083] When the power failure risk level is the first level, outputting first warning information corresponding to the first level at a first frequency;

[0084] When the power failure wind direction level is the second level, outputting second warning information corresponding to the second level at a second frequency;

[0085] The second frequency is greater than the first frequency.

[0086] During the specific implementation process, the power shortage risk levels include the first level and the second level, and the second level of power shortage risk is higher than the first level.

[0087] When outputting warning information corresponding to the power shortage risk level, different reminder frequencies can be set for different levels, wherein the first level corresponds to a first frequency, the second level corresponds to a second frequency, and the second frequency is greater than the first frequency.

[0088] Specifically, when the power shortage risk level is the first level, the first warning information corresponding to the first level is output at the first frequency. Exemplarily, the first warning information may be output once when the power shortage risk level is determined to be the first level, and the output mode of the first warning information may include voice reminder and instrument display.

[0089] When the power failure risk level is the second level, the second warning information corresponding to the second level is output at the second frequency. Exemplarily, after determining that the power failure risk level is the second level, the alarm intensity can be increased and the alarm can be continuously output, and the output mode of the second warning information can include voice reminder and instrument display.

[0090] The first warning message and the second warning message are used to remind the driver that the battery is at risk of low power. To ensure driving safety, please go to the maintenance center for inspection and maintenance in time.

[0091] For example, when the instrument display is performed, if the power failure risk level is the first level, the indicator light corresponding to the power failure risk starts to flash at a frequency of 1 Hz; if the power failure risk level is the second level, the indicator light corresponding to the power failure risk starts to flash at a frequency of 5 Hz.

[0092] The above implementation scheme of the present application can enable the driver to take different driving measures to ensure driving safety by outputting warning information corresponding to the risk level of low power.

[0093] The above introduces the low-voltage power supply abnormality processing method provided in the embodiment of the present application. The following will introduce the low-voltage power supply abnormality processing device provided in the embodiment of the present application in conjunction with the accompanying drawings.

[0094] like Figure 2As shown, an embodiment of the present invention further provides a low voltage power supply abnormality processing device, the device comprising:

[0095] A first acquisition module 201 is used to acquire low-voltage power supply information corresponding to a low-voltage power supply system when the vehicle is in a high-voltage power-on state, wherein the low-voltage power supply system includes a DC converter and a battery, and the low-voltage power supply system is used to supply power to each low-voltage device in the vehicle that is in an on state;

[0096] A judging module 202, configured to judge whether an abnormality occurs in the low-voltage power supply system according to the low-voltage power supply information;

[0097] A determination module 203 is used to determine the power failure risk level corresponding to the battery according to the low-voltage power supply information when an abnormality occurs in the low-voltage power supply system;

[0098] The processing module 204 is used to adjust the start state or start gear of each low-voltage device according to the power failure risk level, and output warning information corresponding to the power failure risk level.

[0099] Optionally, the low-voltage power supply information includes a requested voltage corresponding to the low-voltage system, first power supply information corresponding to the DC converter, and second power supply information corresponding to the battery, wherein the first power supply information includes a self-test state, a first output voltage, and a first output current, and the second power supply information includes a second output voltage, a second output current, and a remaining power; the first acquisition module includes:

[0100] A first acquisition submodule, configured to acquire a requested voltage of the low-voltage system based on a connection with the low-voltage system;

[0101] A second acquisition submodule, configured to acquire the first power supply information based on the connection with the DC converter;

[0102] The third acquisition submodule is used to acquire the second power supply information based on the connection with the battery.

[0103] Optionally, the judgment module includes:

[0104] The first determination submodule is configured to determine that an abnormality occurs in the low-voltage power supply system when the low-voltage power supply information satisfies at least one of the following conditions:

[0105] The self-check state in the low-voltage power supply information is an abnormal state;

[0106] The duration for which the difference between the requested voltage and the first output voltage is greater than a first preset voltage threshold is greater than a first preset duration;

[0107] The first output current is less than a preset current threshold;

[0108] The duration for which the difference between the requested voltage and the second output voltage is greater than a second preset voltage threshold is greater than a second preset duration;

[0109] The second output current is greater than the preset current threshold.

[0110] Optionally, the determination module includes:

[0111] A second determination submodule is used to determine the duration of the abnormality of the low-voltage power supply system according to the low-voltage power supply information;

[0112] A third determination submodule, configured to determine power consumption information corresponding to the battery according to the low-voltage power supply information, wherein the power consumption information includes power consumption, remaining power, and an average value of the second output voltage within a preset period;

[0113] The fourth determination submodule is used to determine the power shortage risk level according to the duration and the power consumption information.

[0114] Optionally, the fourth determining submodule includes:

[0115] A first determining unit, configured to determine that the power failure risk level is a first level when the duration is greater than a second preset duration and less than a third preset duration;

[0116] The second determining unit is configured to determine that the power shortage risk level is the second level when the duration is greater than the third preset duration or the power consumption information satisfies at least one of the following conditions:

[0117] The power consumption in the power consumption information is greater than the first power;

[0118] The remaining power in the power consumption information is less than the second power;

[0119] An average value of the second output voltage in the power consumption information within a preset period is less than a third preset voltage threshold.

[0120] Optionally, the processing module includes:

[0121] A fourth acquisition submodule is used to acquire a target low-voltage equipment list corresponding to the power failure risk level;

[0122] A fifth determination submodule, configured to determine the low-voltage devices belonging to the target low-voltage device list among the low-voltage devices as the low-voltage devices to be adjusted;

[0123] A first processing submodule is used to reduce the opening gear position of the low-voltage device to be adjusted when the low-voltage device to be adjusted is a downshiftable device;

[0124] The second processing submodule is used to shut down the low-voltage device to be adjusted when the low-voltage device to be adjusted is a device that cannot be downshifted.

[0125] Optionally, the processing module further includes:

[0126] A first output module, configured to output first warning information corresponding to the first level at a first frequency when the power failure risk level is the first level;

[0127] a second output module, configured to output second warning information corresponding to the second level at a second frequency when the power failure wind direction level is the second level;

[0128] The second frequency is greater than the first frequency.

[0129] The low-voltage power supply abnormality processing device provided by the present application obtains low-voltage power supply information corresponding to the low-voltage power supply system when the vehicle is in a high-voltage power-on state to determine whether the low-voltage power supply system has an abnormality. Therefore, when the low-voltage power supply system has an abnormality and the low-voltage equipment of the vehicle is powered by a battery, the battery low-power risk level can be determined, and then the start-up state of each low-voltage equipment can be adjusted according to the battery low-power risk level. This realizes automatic graded control of the start-up state of each low-voltage equipment when an abnormality occurs in the low-voltage power supply system, effectively reduces the low-voltage power consumption of the entire vehicle, and extends the power supply time of the battery. At the same time, by outputting warning information corresponding to the low-power risk level, the driver can take different driving measures to ensure driving safety.

[0130] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0131] An embodiment of the present application also provides an electronic device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, the various processes of the above-mentioned low-voltage power supply abnormality handling method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0132] For example, Figure 3 FIG. 1 shows a schematic diagram of the physical structure of an electronic device. Figure 3As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communication interface 320, and the memory 330 complete mutual communication through the communication bus 340. The processor 310 can call the logic instructions in the memory 330, and the processor 310 is used to perform the following steps: when the vehicle is in a high-voltage power-on state, obtain the low-voltage power supply information corresponding to the low-voltage power supply system, wherein the low-voltage power supply system includes a DC converter and a battery, and the low-voltage power supply system is used to supply power to each low-voltage device in the vehicle that is in an on state; according to the low-voltage power supply information, determine whether the low-voltage power supply system is abnormal; when the low-voltage power supply system is abnormal, determine the power-loss risk level corresponding to the battery according to the low-voltage power supply information; adjust the on state or on gear of each low-voltage device according to the power-loss risk level, and output the warning information corresponding to the power-loss risk level. The processor 310 can also execute other schemes in the embodiment of the present application, which will not be further elaborated here.

[0133] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.

[0134] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, each process of the above-mentioned low-voltage power supply abnormality processing method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0135] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0136] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0137] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0138] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the present application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0139] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0140] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0141] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0142] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0143] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0144] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A method for handling low voltage power supply abnormality, It is characterized in that The method comprises: When the vehicle is in a high-voltage power-on state, obtaining low-voltage power supply information corresponding to a low-voltage power supply system, wherein the low-voltage power supply system includes a DC converter and a battery, and the low-voltage power supply system is used to supply power to each low-voltage device in the vehicle that is in an on state; According to the low-voltage power supply information, determining whether the low-voltage power supply system is abnormal; When an abnormality occurs in the low-voltage power supply system, determining the power shortage risk level corresponding to the battery according to the low-voltage power supply information; The opening state or opening gear of each low-voltage device is adjusted according to the power failure risk level, and warning information corresponding to the power failure risk level is output.

2. The method for handling low voltage power supply abnormality according to claim 1, It is characterized in that The low-voltage power supply information includes a requested voltage corresponding to the low-voltage system, first power supply information corresponding to the DC converter, and second power supply information corresponding to the battery, wherein the first power supply information includes a self-test state, a first output voltage, and a first output current, and the second power supply information includes a second output voltage, a second output current, and a remaining power; obtaining the low-voltage power supply information corresponding to the low-voltage power supply system includes: Based on the connection with the low voltage system, obtaining a requested voltage of the low voltage system; Based on the connection with the DC converter, acquiring the first power supply information; Based on the connection with the battery, the second power supply information is acquired.

3. The method for handling low voltage power supply abnormality according to claim 2, It is characterized in that Judging whether the low-voltage power supply system is abnormal according to the low-voltage power supply information includes: When the low-voltage power supply information satisfies at least one of the following conditions, it is determined that an abnormality occurs in the low-voltage power supply system: The self-check state in the low-voltage power supply information is an abnormal state; The duration for which the difference between the requested voltage and the first output voltage is greater than a first preset voltage threshold is greater than a first preset duration; The first output current is less than a preset current threshold; The duration for which the difference between the requested voltage and the second output voltage is greater than a second preset voltage threshold is greater than a second preset duration; The second output current is greater than the preset current threshold.

4. The method for handling low voltage power supply abnormality according to claim 2, It is characterized in that Determining the power shortage risk level corresponding to the battery according to the low-voltage power supply information includes: Determine, based on the low-voltage power supply information, the duration of the abnormality in the low-voltage power supply system; Determine the power consumption information corresponding to the battery according to the low-voltage power supply information, wherein the power consumption information includes power consumption, remaining power, and an average value of the second output voltage within a preset period; The power shortage risk level is determined according to the duration and the power consumption information.

5. The method for handling low voltage power supply abnormality according to claim 4, It is characterized in that Determining the power shortage risk level according to the duration and the power consumption information includes: When the duration is greater than the second preset duration and less than the third preset duration, determining the power failure risk level to be the first level; When the duration is greater than the third preset duration, or the power consumption information satisfies at least one of the following conditions, the power shortage risk level is determined to be the second level: The power consumption in the power consumption information is greater than the first power; The remaining power in the power consumption information is less than the second power; An average value of the second output voltage in the power consumption information within a preset period is less than a third preset voltage threshold.

6. The method for handling low voltage power supply abnormality according to claim 1, It is characterized in that According to the power failure risk level, the opening state or opening gear of each low-voltage device is adjusted, including: Obtain a list of target low-voltage devices corresponding to the power failure risk level; Determine the low-voltage equipment belonging to the target low-voltage equipment list among the low-voltage equipment as the low-voltage equipment to be adjusted; When the low-voltage device to be adjusted is a downshiftable device, lowering the opening gear position of the low-voltage device to be adjusted; When the low-voltage device to be regulated is a device that cannot be downshifted, the low-voltage device to be regulated is turned off.

7. The method for handling low voltage power supply abnormality according to claim 1, It is characterized in that Outputting warning information corresponding to the power shortage risk level, including: When the power failure risk level is the first level, outputting first warning information corresponding to the first level at a first frequency; When the power failure wind direction level is the second level, outputting second warning information corresponding to the second level at a second frequency; The second frequency is greater than the first frequency.

8. A low voltage power supply abnormality processing device, It is characterized in that include: A first acquisition module is used to acquire low-voltage power supply information corresponding to a low-voltage power supply system when the vehicle is in a high-voltage power-on state, wherein the low-voltage power supply system includes a DC converter and a battery, and the low-voltage power supply system is used to supply power to each low-voltage device in the vehicle that is in an on state; A judging module, used for judging whether an abnormality occurs in the low-voltage power supply system according to the low-voltage power supply information; A determination module, configured to determine, when an abnormality occurs in the low-voltage power supply system, a power shortage risk level corresponding to the battery according to the low-voltage power supply information; The processing module is used to adjust the opening state or opening gear of each low-voltage device according to the power-loss risk level, and output warning information corresponding to the power-loss risk level.

9. An electronic device, It is characterized in that The method comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the low-voltage power supply abnormality processing method as claimed in any one of claims 1 to 7.

10. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the low-voltage power supply abnormality processing method according to any one of claims 1 to 7 are implemented.

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