Power control method and apparatus, transportation vehicle, and storage medium

Abstract

Embodiments of the present application provide a power control method and device, a traffic carrier and a storage medium. The method comprises: obtaining a working parameter of a battery in the traffic carrier; determining a working state of the battery based on the working parameter of the battery; in a case where a duration that the battery is in a discharging state is greater than a first preset duration, controlling a target power-consuming device to enter a limited power mode, and a limited power of the target power-consuming device in the limited power mode is less than a maximum working power of a target power-supply device in a normal mode. The technical solution provided by the embodiments of the present application, in a case where the battery is in a discharging state for a long time, controls a low-voltage power-consuming device to enter a limited power mode, so as to reduce the working power of the low-voltage power-consuming device, reduces the power demand of the whole vehicle in an extreme power demand scenario, avoids the risk of battery power loss due to insufficient rated power of a DC-DC converter, and does not cause additional increase in the cost of the DC-DC converter.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more particularly to a power control method, device, vehicle, and storage medium. Background Technology

[0002] Due to cost constraints on the entire vehicle, the selection of rated power for DC-DC converters is becoming increasingly refined, requiring both the ability to meet the vehicle's power needs and a relatively small margin.

[0003] However, the overly precise rated power of DC-DC converters cannot adapt to environmental differences. Specifically, when a vehicle is driving in a normal environment, the rated power of the DC-DC converter can meet the vehicle's power needs. However, when the vehicle is driving in extremely cold or hot regions, the vehicle's power needs increase, and the power needs of the entire vehicle exceed the rated power of the DC-DC converter. Summary of the Invention

[0004] This application provides a power control method, apparatus, vehicle, and storage medium.

[0005] In a first aspect, embodiments of this application provide a power control method, the method comprising: acquiring the operating parameters of a battery in a vehicle; determining the operating state of the battery based on the operating parameters of the battery; and controlling a target electrical device to enter a power limiting mode when the duration of the battery being in a discharge state is greater than a first preset duration, wherein the target electrical device is a low-voltage electrical device in a vehicle, and the power limiting power of the target electrical device in the power limiting mode is less than the maximum operating power of the target power supply device in the normal mode.

[0006] Secondly, embodiments of this application provide a power control device, comprising: a parameter acquisition module for acquiring operating parameters of a battery in a vehicle; a state determination module for determining the operating state of the battery based on the operating parameters; and a power control module for controlling a target electrical device to enter a power-limiting mode when the battery is in a discharge state for a duration longer than a first preset duration. The target electrical device is a low-voltage electrical device in the vehicle, and the power limit of the target electrical device in the power-limiting mode is less than the maximum operating power of the target power supply device in the normal mode.

[0007] Thirdly, embodiments of this application provide a vehicle, including: a memory; one or more processors coupled to the memory; and one or more programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to perform the method as described in the first aspect.

[0008] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer program instructions that can be invoked by a processor to execute the method described in the first aspect.

[0009] Fifthly, embodiments of this application provide a computer program product, which, when the instructions in the computer program product are executed, is used to implement the method described in the first aspect.

[0010] Compared to the technical solutions provided by related technologies, the technical solution provided in this application acquires the working parameters of the battery during the operation of the vehicle, and detects whether the battery is in a discharging state based on the working parameters of the battery. If the battery is in a discharging state for a long time, the low-voltage electrical equipment is controlled to enter the power limiting mode to reduce the working power of the low-voltage electrical equipment. In extreme power demand scenarios, the power demand of the whole vehicle is reduced, avoiding the risk of battery depletion due to insufficient rated power of DC-DC, and without bringing additional DC-DC cost increases. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the implementation environment provided in the embodiments of this application.

[0013] Figure 2 This is a system architecture diagram of a transportation vehicle provided in one embodiment of this application.

[0014] Figure 3 This is a flowchart of a power control method provided in one embodiment of this application.

[0015] Figure 4 This is a flowchart of a power control method provided in another embodiment of this application.

[0016] Figure 5 This is a flowchart of a power control method provided in another embodiment of this application.

[0017] Figure 6 This is a block diagram of a power control device provided in one embodiment of this application.

[0018] Figure 7 This is a structural block diagram of a transportation vehicle provided in one embodiment of this application. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] Please refer to Figure 1 The diagram illustrates an implementation environment provided in one embodiment of this application. The implementation environment includes a transportation vehicle 100, which may be a vehicle, an aircraft, etc. In this embodiment, the transportation vehicle 100 is only described as a vehicle. Specifically, the transportation vehicle 100 is a new energy vehicle.

[0022] Reference Figure 2 This illustration shows a system architecture of a vehicle 100 provided in one embodiment of this application. The vehicle 100 includes a vehicle control unit (VCU), a battery, a DC-DC converter, an intelligent body control module (IBCM), and low-voltage electrical equipment. The low-voltage electrical equipment includes a seat ventilation and heating module, a blower, and an electric fan.

[0023] The VCU is connected to the battery, DC-DC converter, IBCM, and low-voltage electrical equipment via a bus to achieve data transmission. For example, the battery reports its operating current and voltage to the VCU, the IBCM reports the power status signal of the vehicle 100 to the VCU, the DC-DC converter reports its low-voltage voltage, current, and power to the VCU, and the VCU sends power limit signals and power limit levels to the low-voltage electrical equipment.

[0024] In this embodiment, the VCU acquires the battery's operating parameters during the vehicle's operation and detects whether the battery is in a discharging state based on these parameters. If the battery is in a discharging state for a long time, the VCU controls the low-voltage electrical equipment to enter a power-limiting mode to reduce the operating power of the low-voltage electrical equipment. In extreme power demand scenarios, this reduces the vehicle's power demand, avoids the risk of battery depletion due to insufficient rated power of the DC-DC converter, and does not lead to additional DC-DC cost increases.

[0025] Please refer to Figure 3 The diagram illustrates a flowchart of a power control method according to an embodiment of this application. The method includes the following steps.

[0026] S201, obtain the battery's operating parameters.

[0027] The operating parameters of the battery include the battery's operating current and / or operating voltage. In some embodiments, the vehicle includes a battery management system, which includes a current sensor that periodically detects the battery's operating current and operating voltage and sends the detection data to the VCU. The detection period of the current sensor can be set experimentally or empirically, and this application embodiment does not limit this; exemplarily, the detection period of the current sensor is 50ms.

[0028] S202, determine the working status of the battery based on the battery's operating parameters.

[0029] The operating states of a battery include charging and discharging states. Optionally, the VCU determines whether the battery is charging or discharging based on its operating current. Specifically, a negative operating current indicates that the battery is discharging, while a positive operating current indicates that the battery is charging.

[0030] S203: If the duration of battery discharge exceeds a first preset duration, control the target electrical equipment to enter a power limiting mode.

[0031] The first preset duration is set based on experiments or experience; for example, the preset duration is 30 minutes.

[0032] The target electrical equipment refers to low-voltage electrical equipment in a vehicle, such as lighting systems, air conditioning and heating systems, driver assistance systems (cameras, radar, etc.), power windows, windshield wipers, multimedia equipment, etc. In this embodiment, only seat ventilation and heating modules, blowers, and electric fans are used as examples for illustration.

[0033] In some embodiments, the target electrical equipment can be set by the developer, customized by the user, or automatically by the vehicle. The process of user-defined target electrical equipment is explained below. Optionally, the vehicle provides a power-limiting mode setting interface, which includes multiple low-voltage electrical equipment. Users can select low-voltage electrical equipment as the target electrical equipment requiring power limitation according to their own usage needs.

[0034] The power limit of the target electrical equipment in power-limiting mode should be less than its maximum operating power in normal mode. The operating power of the target electrical equipment in power-limiting mode is less than or equal to the aforementioned power limit.

[0035] In some embodiments, the vehicle also acquires the temperature of its surrounding environment. If the ambient temperature is higher than a first temperature or lower than a second temperature, the vehicle controls the target electrical equipment to enter a power-limiting mode. The first temperature is higher than the second temperature; for example, the first temperature is 30°C and the second temperature is 0°C. Since the rated power of the DC-DC converter is typically insufficient to meet the vehicle's power requirements in extreme environments, in this embodiment, it first detects whether the vehicle is in an extreme environment. If the vehicle is in an extreme environment, the power of the target electrical equipment is limited; if the vehicle is not in an extreme environment, the power of the target electrical equipment is not limited, thus avoiding power limitation of the target electrical equipment when the rated power of the DC-DC converter is sufficient.

[0036] In other possible implementations, the vehicle acquires the low-voltage operating power of the DC-DC converter. If the difference between its low-voltage operating power and the rated power is less than a predetermined difference, the vehicle controls the target electrical equipment to enter a power-limiting mode. The predetermined difference is set based on experimentation or experience; for example, the predetermined difference is 20W. Further, if the duration for which the difference between the vehicle's low-voltage operating power and the rated power is less than the predetermined difference is greater than a fourth predetermined duration, the vehicle controls the target electrical equipment to enter the power-limiting mode. The fourth predetermined duration is set based on experimentation or experience; for example, the fourth predetermined duration is 10 minutes.

[0037] In summary, the technical solution provided in this application acquires the battery's operating parameters during the operation of the vehicle and detects whether the battery is in a discharging state based on these parameters. If the battery is in a discharging state for a long time, the low-voltage electrical equipment is controlled to enter a power-limiting mode to reduce the operating power of the low-voltage electrical equipment. In extreme power demand scenarios, this reduces the power demand of the entire vehicle, avoids the risk of battery depletion due to insufficient rated power of the DC-DC converter, and does not bring additional DC-DC cost increases.

[0038] Please refer to Figure 4 This illustrates a flowchart of a power control method provided in another embodiment of this application. Based on... Figure 3 In an optional embodiment provided by the example, S303 is replaced by S403-S405. The method includes the following procedures.

[0039] S401, obtain the battery's operating parameters.

[0040] S402 determines the working status of the battery based on its operating parameters.

[0041] S403: If the duration of the battery being discharged exceeds a first preset duration, obtain the power limit level of the target electrical equipment.

[0042] There is a negative correlation between the power limit level and the power limit of the target electrical equipment. That is, the higher the power limit level of the target electrical equipment, the lower the power limit, and the lower the power limit level of the target electrical equipment, the higher the power limit.

[0043] Optionally, the VCU determines the power limit level of the target electrical equipment by obtaining the average discharge power of the battery based on the battery's operating parameters, and then determining the power limit level based on the average discharge power of the battery.

[0044] The average discharge power of a battery can be calculated based on its operating voltage and current. Optionally, the power limit rating is positively correlated with the average discharge power of the battery; that is, the higher the average discharge power of the battery, the higher the power limit rating; and the lower the average discharge power of the battery, the lower the power limit rating.

[0045] In some embodiments, the VCU determines the power limit level based on a first mapping relationship and the average discharge power of the battery. The first mapping relationship includes the relationship between different ranges of the average discharge power of the battery and different power limit levels. Table-1 below illustrates the first mapping relationship.

[0046] Power limit level Average discharge power of the battery Level 1 <![CDATA[0<P1≤100]]> Level 2 <![CDATA[100<P1≤200]]> Level 3 <![CDATA[200<P1≤300]]>

[0047] Table 1

[0048] As shown in Table 1, the power limit levels are divided into three levels, with Level 1 being the lowest and Level 3 the highest. When the average discharge power of the battery is greater than 0 and less than or equal to 100W, the corresponding power limit level is Level 1; when the average discharge power of the battery is greater than 100W and less than or equal to 200W, the corresponding power limit level is Level 2; and when the average discharge power of the battery is greater than 200W and less than or equal to 300W, the corresponding power limit level is Level 3.

[0049] S404, Obtain the power limiting measures that the target electrical equipment needs to adopt under the power limiting level.

[0050] Optionally, the VCU determines the power limiting measures that the target electrical equipment should adopt at the power limiting level based on the second mapping relationship, which includes the power limiting measures adopted by different electrical equipment at different power limiting levels.

[0051] For example, when the power limit level is 1, the seat ventilation and heating module is limited to level 1, the blower duty cycle is limited to 90%, and the electric fan duty cycle is limited to 90%; when the power limit level is 2, the seat ventilation and heating module is limited to level 1, the blower duty cycle is limited to 70%, and the electric fan duty cycle is limited to 85%; when the power limit level is 3, the seat ventilation and heating module is limited to level 1, the blower duty cycle is limited to 50%, and the electric fan duty cycle is limited to 80%.

[0052] S405, Control the target electrical equipment to operate in accordance with power limiting measures.

[0053] The target electrical equipment operates according to the above power limiting measures, thereby significantly reducing the low-voltage power consumption of the DC-DC converter. In extreme power demand scenarios, this reduces the power demand of the entire vehicle, avoids the risk of battery depletion due to insufficient rated power of the DC-DC converter, and does not bring additional DC-DC cost increases.

[0054] In some embodiments, when a target electrical device enters a power-limiting mode, if an operation command is received for the target electrical device, the vehicle issues a reminder message to inform the target electrical device of the power-limiting measures taken. For example, when a user adjusts the setting of the seat ventilation and heating module, the vehicle issues a reminder message: "The seat ventilation and heating module is currently set to the highest setting of one."

[0055] In some embodiments, when a target electrical device enters a power-limited mode, if an operation command is received for the target electrical device, the vehicle sends an inquiry to confirm whether to operate the target electrical device. If a confirmation instruction is received, the vehicle controls the target electrical device that received the operation command to exit the power-limited mode, allowing the user to use the target electrical device normally. Furthermore, while controlling the target electrical device that received the operation command to exit the power-limited mode, if the power-limiting level of other target electrical devices is not the highest level, the power-limiting level of the other target electrical devices is increased. This satisfies the user's needs while reducing the overall vehicle power consumption, avoiding the risk of battery depletion due to insufficient DC-DC rated power, and without increasing the additional DC-DC cost.

[0056] In some embodiments, if the battery is still discharging for a duration longer than a second preset duration when the power limit level of the target electrical device is not the highest level, the power limit level of the target electrical device is increased.

[0057] The second preset duration is set based on experiments or experience; for example, the second preset duration is 1 minute.

[0058] In one possible implementation, the target electrical device progressively increases its power limit level. For example, if the target electrical device has a power limit level of 1, and the battery remains in a discharging state for more than one minute after the target electrical device enters the power limit mode, then the target electrical device will increase its power limit level to 2.

[0059] In another possible implementation, the VCU obtains the average discharge power of the battery over a specified period and determines the increase in the power limitation level based on this average discharge power. The specified period refers to the time between the point when the target electrical device enters power limitation mode and the current time. Optionally, if the average discharge power of the battery over the specified period is greater than a preset power, the power limitation level of the target electrical device is directly increased to the highest level; if the average discharge power of the battery over the specified period is less than the preset power, the power limitation level of the target electrical device is gradually increased.

[0060] In summary, the technical solution provided in this application determines the power limit level of the target electrical equipment based on the average discharge power of the battery in a discharging state, thereby achieving more refined power control and reducing the overall vehicle power consumption while meeting usage requirements.

[0061] Please refer to Figure 5 The diagram illustrates a flowchart of a power control method provided in one embodiment of this application, which includes the following procedures.

[0062] S501, obtain the battery's operating parameters.

[0063] S502 determines the working status of the battery based on its operating parameters.

[0064] S503: When the battery is in a discharging state for a duration longer than a first preset duration, the target electrical equipment is controlled to enter a power limiting mode.

[0065] The target electrical equipment is a low-voltage electrical device in a transportation vehicle. The power limitation of the target electrical equipment in power-limiting mode is less than the maximum operating power of the target power supply equipment in normal mode.

[0066] S504 obtains the low-voltage operating power of the DC-DC converter in the vehicle.

[0067] Optionally, the VCU obtains the operating current and operating voltage of the low-voltage side of the DC-DC converter, and calculates the low-voltage operating power of the DC-DC converter based on the operating current and operating voltage of the low-voltage side.

[0068] S505 controls the target electrical equipment to exit the power limiting mode when the duration for which the low-voltage operating power of the DC converter is less than the specified power is greater than the third preset duration.

[0069] The specified power can be determined based on the power limit level. Specifically, before controlling the target electrical equipment to exit the power limit mode, the specified power is also determined based on the power limit level of the target electrical equipment. The specified power is negatively correlated with the power limit level of the target electrical equipment; that is, the higher the power limit level of the target electrical equipment, the lower the specified power, and vice versa.

[0070] In some embodiments, the VCU determines the specified power based on a second mapping relationship and the power limit level of the target electrical equipment. The second mapping relationship includes mapping relationships between different power limit levels and different specified powers. Table-2 below illustrates the second mapping relationship.

[0071] Power limit level Specified power Level 1 DC-DC low-voltage rated power - 100W Level 2 DC-DC low-voltage rated power - 200W Level 3 DC-DC low-voltage rated power - 300W

[0072] Table 2

[0073] Based on Table 2, assuming the rated power of the DC-DC low-voltage side is 1200W, when the power limit level of the target electrical equipment is level 1, the specified power is 1200-100=1100W; when the power limit level of the target electrical equipment is level 2, the specified power is 1200-200=1000W; and when the power limit level of the target electrical equipment is level 1, the specified power is 1200-300=900W.

[0074] The third preset duration is set based on experiments or experience, for example, 5 minutes.

[0075] If the low-voltage operating power of the DC converter is greater than the specified power, or if the duration for which the low-voltage operating power of the DC converter is less than the specified power is less than a third preset duration, the target electrical equipment shall be controlled to maintain the power-limiting mode.

[0076] S506, when it detects that the power level of a vehicle has switched to a specified level, controls the target electrical equipment to exit the power limiting mode.

[0077] Optionally, the specified power level is OFF. When the user triggers a power level switch, INCM sends a power level signal to VCU. VCU monitors whether the vehicle's power level has switched to the specified power level based on this signal. When the vehicle's power level switches to OFF, it indicates that the user does not need to drive the vehicle, and the target electrical equipment in the vehicle does not need to continue operating, thus exiting the power limiting mode.

[0078] In other possible implementations, the vehicle also acquires the temperature of its surroundings. If the ambient temperature is lower than a first temperature but higher than a second temperature, the vehicle controls the target electrical equipment to exit the power-limiting mode. Since the rated power of a DC-DC converter is usually insufficient to meet the vehicle's power requirements in extreme environments, in this embodiment, the target electrical equipment is controlled to exit the power-limiting mode only after the vehicle has exited the extreme environment, thus avoiding power limitation on the target electrical equipment when the rated power of the DC-DC converter is sufficient.

[0079] In summary, the technical solution provided in this application embodiment controls the target electrical equipment to exit the power limiting mode when the low-voltage operating power of the DC-DC converter is detected to be less than the specified power, so that the user can use the low-voltage electrical equipment normally.

[0080] Please refer to Figure 6 The diagram illustrates a block diagram of a power control device according to an embodiment of this application. The power control device includes: a parameter acquisition module 610, a status determination module 620, and a power control module 630.

[0081] The parameter acquisition module 610 is used to acquire the operating parameters of the battery in the vehicle.

[0082] The status determination module 620 is used to determine whether the battery is in a discharging state based on the battery's operating parameters.

[0083] The power control module 630 is used to control the target electrical equipment to enter the power limiting mode when the battery is in the discharge state for a period of more than a first preset time. The target electrical equipment is a low-voltage electrical equipment in a transportation vehicle. The power limit of the target electrical equipment in the power limiting mode is less than the maximum operating power of the target power supply equipment in the normal mode.

[0084] In some embodiments, the power control module 630 is used to obtain the power limit level of the target electrical equipment; obtain the power limiting measures that the target electrical equipment needs to adopt at the power limit level; and control the target electrical equipment to operate in accordance with the power limiting measures.

[0085] In some embodiments, the power control module 630 is used to obtain the average discharge power of the battery based on the battery's operating parameters; and to determine the power limit level based on the average discharge power of the battery, wherein the power limit level is positively correlated with the average discharge power of the battery.

[0086] In some embodiments, the power control module 630 is further configured to increase the power limit level of the target electrical device if the battery is still discharging for a duration longer than a second preset duration when the target electrical device is in a power-limited mode and the power limit level of the target electrical device is not the highest level.

[0087] In some embodiments, the apparatus further includes a power acquisition module (not shown). The power acquisition module is used to acquire the low-voltage operating power of the DC-DC converter in the vehicle. The power control module 630 is used to control the target electrical equipment to exit the power limiting mode when the duration of the low-voltage operating power of the DC-DC converter being less than a specified power is greater than a third preset duration.

[0088] In some embodiments, the apparatus further includes a power determination module (not shown). The power determination module is configured to determine a specified power based on the power limit level of the target electrical equipment, wherein the specified power is negatively correlated with the power limit level of the target electrical equipment.

[0089] In some embodiments, the power control module 630 is further configured to control the target electrical equipment to exit the power limiting mode when the power level of the vehicle is detected to be switched to a specified level.

[0090] In summary, the technical solution provided in this application acquires the battery's operating parameters during the operation of the vehicle and detects whether the battery is in a discharging state based on these parameters. If the battery is in a discharging state for a long time, the low-voltage electrical equipment is controlled to enter a power-limiting mode to reduce the operating power of the low-voltage electrical equipment. In extreme power demand scenarios, this reduces the power demand of the entire vehicle, avoids the risk of battery depletion due to insufficient rated power of the DC-DC converter, and does not bring additional DC-DC cost increases.

[0091] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the above-described device and module can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0092] In the several embodiments provided in this application, the coupling between modules can be electrical, mechanical, or other forms of coupling.

[0093] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0094] Please see Figure 7The illustration shows that an embodiment of this application also provides a transportation vehicle 700, which includes one or more multi-core processors 710, a memory 720, and one or more applications. The one or more applications are stored in the memory 720 and configured to be executed by the one or more multi-core processors 710, and are configured to perform the methods described in the above embodiments.

[0095] The multi-core processor 710 may include one or more processing cores. The multi-core processor 710 connects to various parts of the entire battery management system using various interfaces and lines, and performs various functions and processes data of the battery management system by running or executing instructions, programs, code sets, or instruction sets stored in memory 720, and by calling data stored in memory 720. Optionally, the multi-core processor 710 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The multi-core processor 710 may integrate one or a combination of several of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the multi-core processor 710 and may be implemented separately through a communication chip.

[0096] The memory 720 may include random access memory (RAM) or read-only memory (ROM). The memory 720 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 720 may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as touch functionality, sound playback functionality, image playback functionality, etc.), and instructions for implementing the various method embodiments described below. The data storage area may also store data created during the use of the traffic vehicle map (such as phone books, audio and video data, chat log data, etc.).

[0097] This application also provides a computer-readable storage medium storing computer program instructions that can be invoked by a processor to execute the methods described in the above embodiments.

[0098] Computer-readable storage media can be electronic storage devices such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. Optionally, computer-readable storage media include non-transitory computer-readable storage media. The computer-readable storage medium has storage space for computer program instructions that perform any of the method steps described above. These computer program instructions can be read from or written to one or more computer program products. The computer program instructions may be compressed in an appropriate form.

[0099] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Although this application has disclosed preferred embodiments as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A power control method, characterized in that, The method includes: Obtain the operating parameters of the battery in the vehicle; The operating status of the battery is determined based on its operating parameters; When the duration of the battery discharge exceeds a first preset duration, the target electrical device is controlled to enter a power limiting mode. The target electrical device is a low-voltage electrical device in the vehicle. The power limiting power of the target electrical device in the power limiting mode is less than the maximum operating power of the target power supply device in the normal mode. Obtain the low-voltage operating power of the DC-DC converter in the vehicle; If the duration for which the low-voltage operating power of the DC converter is less than the specified power is greater than a third preset duration, the target electrical device is controlled to exit the power limiting mode. The specified power is negatively correlated with the power limiting level of the target electrical device.

2. The method according to claim 1, characterized in that, The control of the target electrical equipment to enter the power limiting mode includes: Obtain the power limit level of the target electrical equipment; Obtain the power limiting measures that the target electrical equipment needs to adopt under the power limiting level; Control the target electrical equipment to operate in accordance with the power limiting measures.

3. The method according to claim 2, characterized in that, Determining the power limit level of the target electrical equipment includes: The average discharge power of the battery is obtained based on the battery's operating parameters; The power limit level is determined based on the average discharge power of the battery, wherein the power limit level is positively correlated with the average discharge power of the battery.

4. The method according to claim 2, characterized in that, The method further includes: If the target electrical device is in the power limiting mode and the power limiting level of the target electrical device is not the highest level, and the battery is still in a discharging state for a duration longer than the second preset duration, then the power limiting level of the target electrical device is increased.

5. The method according to claim 1, characterized in that, Before controlling the target electrical device to exit the power limiting mode, the method further includes: The specified power is determined based on the power limit level of the target electrical equipment.

6. The method according to any one of claims 1 to 4, characterized in that, The method further includes: When the power supply of the vehicle is detected to switch to a specified level, the target electrical equipment is controlled to exit the power limiting mode.

7. A power control device, characterized in that, The device includes: The parameter acquisition module is used to acquire the operating parameters of the battery in the vehicle. A status determination module is used to determine the operating status of the battery based on the battery's operating parameters; The power control module is used to control the target electrical equipment to enter a power limiting mode when the duration of the battery discharge is longer than a first preset duration. The target electrical equipment is a low-voltage electrical equipment in the vehicle. The power limiting power of the target electrical equipment in the power limiting mode is less than the maximum operating power of the target power supply equipment in the normal mode. A power acquisition module is used to acquire the low-voltage operating power of the DC-DC converter in the vehicle. The power control module is further configured to control the target electrical device to exit the power limiting mode when the duration of the low-voltage operating power of the DC converter being less than the specified power is greater than a third preset duration, wherein the specified power is negatively correlated with the power limiting level of the target electrical device.

8. A transportation vehicle, characterized in that, include: Memory; One or more processors are coupled to the memory; One or more programs, wherein the one or more applications are stored in the memory and configured to be executed by the one or more processors, the one or more programs being configured to perform the method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions that can be invoked by a processor to perform the method as described in any one of claims 1-6.

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