Vehicle power management method, device, electronic device and storage medium

Abstract

The present application relates to the field of energy management technology, and in particular to a vehicle power management method, device, electronic device and storage medium, wherein the method includes: obtaining the current operating state of the vehicle, and matching the vehicle's optimal scene mode according to the current operating state; based on the optimal scene mode, determining the actual working state of multiple electrical devices corresponding to the optimal scene mode from a preset scene-electrical device table; and controlling multiple electrical devices to perform corresponding actions according to the actual working state, and calculating the total power consumption of the current electrical appliances of the entire vehicle, and sending the total power consumption to the energy management module of the vehicle, so as to manage the low-voltage power consumption in the current operating state through the energy management module, so that the low-voltage power consumption is less than the preset threshold. Thus, the problem that the related technology lacks a battery management solution under vehicle dynamics and cannot control the power supply circuit of the entire vehicle is solved, and the control method of low-voltage power energy-saving management is used to achieve energy saving and consumption reduction of the entire vehicle.

Description

Technical Field

[0001] The present application relates to the field of energy management technology, and in particular to a vehicle power management method, device, electronic device and storage medium. Background Art

[0002] As new energy vehicles enter more and more families, the quality of new energy vehicle power management determines whether new energy vehicles can win in the fierce market competition. At present, the energy management of new energy vehicles is mainly focused on the management of power, high voltage and cooling systems. The low-voltage power supply system is restricted by the traditional electronic and electrical architecture and cannot be adjusted on demand. The application of intelligent power distribution modules in the new generation of intelligent automotive electronic and electrical architecture makes low-voltage power supply control possible. Based on this new low-voltage power supply control solution, we can put more ideas into practice to achieve the purpose of intelligent energy saving and consumption reduction in vehicle dynamic conditions. The difference is shown in the attached Figure 1 .

[0003] The related art provides a low-voltage energy management control system and method for buses. By using a current sensor, the current of the low-voltage system can be sent to the vehicle instrument through a CAN (Controller Area Network) communication line, and the driver can monitor the status of the low-voltage battery.

[0004] However, the related technology can only be used for static management of the vehicle after power is turned off, but lacks a solution for the dynamic state of the vehicle. Moreover, the related technology can only control the main power supply circuit of the power supply system, but cannot achieve control over the entire vehicle. Summary of the invention

[0005] The present application provides a vehicle power management method, device, electronic device and storage medium to solve the problem that the related technology lacks a battery management solution under vehicle dynamics and cannot achieve control of the entire vehicle, and utilizes a control method for low-voltage power energy-saving management to achieve energy saving and consumption reduction of the entire vehicle.

[0006] The first aspect of the present application provides a method for power management of a vehicle, comprising the following steps: obtaining a current operating state of the vehicle, and matching an optimal scenario mode of the vehicle according to the current operating state; based on the optimal scenario mode, determining the actual working states of multiple electrical devices corresponding to the optimal scenario mode from a preset scenario-electrical device table; and controlling the multiple electrical devices to perform corresponding actions according to the actual working states, and calculating the total power consumption of the current electrical appliances of the entire vehicle, and sending the total power consumption to an energy management module of the vehicle, so as to manage the low-voltage power consumption in the current operating state through the energy management module, so that the low-voltage power consumption is less than a preset threshold.

[0007] Based on the above technical means, the present application can solve the problem that the related technology lacks a battery management solution under vehicle dynamics and cannot achieve control of the entire vehicle, and utilizes the control method of low-voltage power supply energy-saving management to achieve energy saving and consumption reduction of the entire vehicle.

[0008] Optionally, in some embodiments, before determining the actual working status of multiple electrical devices corresponding to the optimal scenario mode from the preset scenario-electrical device table based on the optimal scenario mode, it also includes: constructing multiple usage scenarios based on the usage of the target vehicle, and determining a vehicle function requirement list and a scenario survey form for each usage scenario; based on the vehicle function requirement list and the scenario survey form, decomposing the work requirements according to multiple electronic and electrical systems of the target vehicle to obtain a scenario-equipment work requirement table; based on preset regulations and safety conditions, classifying the multiple electronic and electrical systems according to the characteristics of the electronic appliances in the multiple electronic and electrical systems, and obtaining the preset scenario-electrical device table according to the classification results and preset scenario definitions.

[0009] According to the above technical means, the present application can decompose the working requirements of the electronic and electrical systems according to the vehicle usage scenarios and the vehicle functional requirements list to obtain a scenario-electrical equipment table.

[0010] Optionally, in some embodiments, the electrical system includes at least one of a power system, a braking system, a steering system, a thermal management system, a safety system, a regulatory system, a cockpit system, and a driving system.

[0011] Based on the above technical means, the present application can manage the power consumption of the entire vehicle's electronic circuits.

[0012] Optionally, in some embodiments, the calculating the total power consumption of the current vehicle electrical appliances includes: calculating the total power consumption of the current vehicle electrical appliances based on a preset power consumption calculation formula, wherein the preset power consumption calculation formula is:

[0013] P = U1*I1+U2*I2;

[0014] Among them, U1 is the output voltage of DCDC, I1 is the output current of DCDC, U2 is the output voltage of the battery, and I2 is the output current of the battery.

[0015] Based on the above technical means, this application can calculate the total power consumption of the current vehicle electrical appliances to facilitate subsequent management.

[0016] Optionally, in some embodiments, the current operating state includes at least one of a parking power-off state, a parking power-on state and a driving state.

[0017] According to the above technical means, the present application can match the best scene mode according to the current operating status of the vehicle.

[0018] The second aspect of the present application provides a power management device, including: an acquisition module, used to acquire the current operating state of a vehicle and match the optimal scene mode of the vehicle according to the current operating state; a matching module, used to determine, based on the optimal scene mode, the actual working states of multiple electrical devices corresponding to the optimal scene mode from a preset scene-electrical device table; and a management module, used to control the multiple electrical devices to perform corresponding actions according to the actual working states, and calculate the total power consumption of the current electrical appliances of the entire vehicle, and send the total power consumption to the energy management module of the vehicle, so as to manage the low-voltage power consumption in the current operating state through the energy management module, so that the low-voltage power consumption is less than a preset threshold.

[0019] Optionally, in some embodiments, before determining the actual working status of multiple electrical devices corresponding to the optimal scenario mode from the preset scenario-electrical device table based on the optimal scenario mode, the matching module is also used to: construct multiple usage scenarios based on the usage of the target vehicle, and determine the vehicle function requirement list and scenario survey form for each usage scenario; based on the vehicle function requirement list and the scenario survey form, decompose the work requirements according to multiple electronic and electrical systems of the target vehicle to obtain a scenario-equipment work requirement table; based on preset regulations and safety conditions, classify the multiple electronic and electrical systems according to the characteristics of the electronic appliances in the multiple electronic and electrical systems, and obtain the preset scenario-electrical device table according to the classification results and preset scenario definitions.

[0020] Optionally, in some embodiments, the electrical system includes at least one of a power system, a braking system, a steering system, a thermal management system, a safety system, a regulatory system, a cockpit system, and a driving system.

[0021] Optionally, in some embodiments, the calculating the total power consumption of the current vehicle electrical appliances includes:

[0022] Based on a preset power consumption calculation formula, the total power consumption of the current vehicle electrical appliances is calculated, wherein the preset power consumption calculation formula is:

[0023] P = U1*I1+U2*I2;

[0024] Among them, U1 is the output voltage of DCDC, I1 is the output current of DCDC, U2 is the output voltage of the battery, and I2 is the output current of the battery.

[0025] Optionally, in some embodiments, the current operating state includes at least one of a parking power-off state, a parking power-on state and a driving state.

[0026] The third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle power management method as described in the above embodiment.

[0027] The fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the vehicle power management method as described in the above embodiment.

[0028] Therefore, by obtaining the current running state of the vehicle, and matching the best scene mode of the vehicle according to the current running state, and based on the best scene mode, determining the actual working state of multiple electric devices corresponding to the best scene mode from the preset scene-electrical device table, and controlling multiple electric devices to perform corresponding actions according to the actual working state, and calculating the total power consumption of the current whole vehicle electrical appliances, and sending the total power consumption to the energy management module of the vehicle, so as to manage the low-voltage power consumption in the current running state through the energy management module, so that the low-voltage power consumption is less than the preset threshold. Therefore, the problem that the related technology lacks a battery management solution under the dynamic state of the vehicle and cannot control the power supply circuit of the whole vehicle is solved, and the control method of low-voltage power energy-saving management is used to achieve energy saving and consumption reduction of the whole vehicle.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1 A schematic diagram showing the differences between related technologies and new intelligent architecture energy management;

[0032] Figure 2 A flowchart of a vehicle power management method provided according to an embodiment of the present application;

[0033] Figure 3 A flowchart of a vehicle power management method provided according to a specific embodiment of the present application;

[0034] Figure 4 A schematic diagram of a low voltage power management architecture provided according to a specific embodiment of the present application;

[0035] Figure 5 A block diagram of a power management device for a vehicle provided according to an embodiment of the present application;

[0036] Figure 6A schematic diagram of an electronic device provided according to an embodiment of the present application.

[0037] Explanation of reference numerals: 10 - power management device of vehicle, 100 - acquisition module, 200 - matching module and 300 - management module. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0039] The following describes the vehicle power management method, device, electronic device and storage medium of the embodiment of the present application with reference to the accompanying drawings. In view of the problem that the related technology mentioned in the above background technology lacks a battery management solution under the dynamic state of the vehicle and cannot control the power supply circuit of the whole vehicle, the present application provides a vehicle power management method, in which the current operating state of the vehicle is obtained, and the optimal scene mode of the vehicle is matched according to the current operating state, and based on the optimal scene mode, the actual working state of multiple electrical devices corresponding to the optimal scene mode is determined from the preset scene-electrical device table, and multiple electrical devices are controlled to perform corresponding actions according to the actual working state, and the total power consumption of the current whole vehicle electrical appliances is calculated, and the total power consumption is sent to the energy management module of the vehicle, so that the low-voltage power consumption in the current operating state is managed by the energy management module, so that the low-voltage power consumption is less than the preset threshold. Thus, the problem that the related technology lacks a battery management solution under the dynamic state of the vehicle and cannot control the power supply circuit of the whole vehicle is solved, and the energy saving and consumption reduction of the whole vehicle are achieved by using the control method of low-voltage power energy-saving management.

[0040] Specifically, Figure 1 A schematic flow chart of a vehicle power management method provided in an embodiment of the present application.

[0041] like Figure 1 As shown, the vehicle power management method includes the following steps:

[0042] In step S101, the current running state of the vehicle is acquired, and the best scene mode of the vehicle is matched according to the current running state.

[0043] Optionally, in some embodiments, the current operating state includes at least one of a parking and power-off state, a parking and power-on state, and a driving state.

[0044] Specifically, the current state of the vehicle is obtained through the controller and sensors on the vehicle, such as parking and powering off, parking and powering on, driving, high temperature, cold, normal temperature, etc. The energy management module enters the corresponding optimal scene mode by judging the vehicle state.

[0045] In step S102, based on the optimal scene mode, the actual working states of multiple electrical devices corresponding to the optimal scene mode are determined from a preset scene-electrical device table.

[0046] Specifically, according to the optimal scenario mode provided by the energy management module, the intelligent power management module makes corresponding dynamic power adjustments according to the "Scene-Power Equipment Control List".

[0047] Optionally, in some embodiments, before determining the actual working status of multiple electrical devices corresponding to the optimal scenario mode from the preset scenario-electrical device table based on the optimal scenario mode, it also includes: constructing multiple usage scenarios based on the usage of the target vehicle, and determining a vehicle function requirement list and a scenario survey form for each usage scenario; based on the vehicle function requirement list and the scenario survey form, decomposing the work requirements according to multiple electronic and electrical systems of the target vehicle to obtain a scenario-equipment work requirement table; based on preset regulations and safety conditions, classifying multiple electronic and electrical systems according to the characteristics of the electronic appliances in the multiple electronic and electrical systems, and obtaining a preset scenario-electrical device table based on the classification results and preset scenario definitions.

[0048] Optionally, in some embodiments, the electrical system includes at least one of a power system, a braking system, a steering system, a thermal management system, a safety system, a regulatory system, a cockpit system, and a driving system.

[0049] Specifically, multiple usage scenarios are constructed based on the usage of the target vehicle. For each scenario, a corresponding "Vehicle Functional Requirements List" needs to be formed. At the same time, each scenario needs to consider the "Scenario Survey Form" such as usage time, intensity, environment, and peripherals. Through the "Vehicle Functional Requirements List" and "Scenario Survey Form", the work requirements of power, braking, steering, thermal management, safety, regulations, cockpit, driving and other systems are decomposed according to the vehicle's electrical system and a preliminary "Scenario-Equipment Work Requirements Correspondence Table" is formed.

[0050] Among them, the electronic and electrical characteristics of the related electronic and electrical systems are collected, including but not limited to: equipment initialization time, working conditions, characteristic curves, working condition-power consumption corresponding curves, etc., and classified according to the electronic and electrical characteristics into: power off is not allowed, power off is allowed, power off is allowed in special circumstances, etc., under the premise of meeting regulations and safety, and a "Scenario-Electric Equipment Control List" is formed according to the scenario definition. Table 1 is a simple example:

[0051] Table 1

[0052]

[0053]

[0054] In step S103, multiple electrical devices are controlled to perform corresponding actions according to the actual working status, and the total power consumption of the current electrical appliances of the entire vehicle is calculated, and the total power consumption is sent to the vehicle's energy management module, so that the low-voltage power consumption in the current operating state is managed through the energy management module, so that the low-voltage power consumption is less than the preset threshold.

[0055] Optionally, in some embodiments, calculating the total power consumption of the current vehicle electrical appliances includes: calculating the total power consumption of the current vehicle electrical appliances based on a preset power consumption calculation formula, wherein the preset power consumption calculation formula is:

[0056] P = U1*I1+U2*I2;

[0057] Among them, U1 is the output voltage of DCDC, I1 is the output current of DCDC, U2 is the output voltage of the battery, and I2 is the output current of the battery.

[0058] Specifically, multiple electrical devices are controlled to perform corresponding actions according to the actual working status, and the voltage, current, SOC (state of charge) and other information of the low-voltage battery are monitored through the IBS. The voltage, current and other information sent by the DCDC are used, and the intelligent power management module is used according to the calculation formula P=U1*I1+U2*I2, where U1 and I1 are the voltage and current output by the DCDC, and U2 and I2 are the output voltage and current of the battery (output is positive and input is negative). The total power consumption of the current electrical appliances of the entire vehicle is calculated and fed back to the energy management module.

[0059] In order to enable those skilled in the art to further understand the vehicle power management method of the embodiment of the present application, it is elaborated in detail below in conjunction with specific embodiments.

[0060] Figure 3 The present invention is a flowchart of a method for managing vehicle power according to an embodiment of the present application.

[0061] S1: Analyze the usage scenarios of the vehicle and define its functional requirements;

[0062] S2: Decompose electrical system requirements according to functional requirements;

[0063] S3: Analyze the characteristics of the vehicle electrical system: start-up time, usage conditions, power consumption and other parameters;

[0064] S4: monitor the vehicle's operating status and determine the current scene mode;

[0065] S5: The intelligent power management module controls the on / off or power limit of the power of the power-consuming device according to the scene mode;

[0066] S6: Monitor the power of low-voltage electrical appliances and provide feedback to the energy management module.

[0067] Thus, through Figure 4 The low-voltage power management architecture shown can be managed to adjust the power consumption of the low-voltage system according to the vehicle status, thereby improving the vehicle's cruising range to a certain extent.

[0068] According to the vehicle power management method proposed in the embodiment of the present application, the current operating state of the vehicle is obtained, and the optimal scene mode of the vehicle is matched according to the current operating state. Based on the optimal scene mode, the actual working state of multiple electrical devices corresponding to the optimal scene mode is determined from the preset scene-electrical device table, and multiple electrical devices are controlled to perform corresponding actions according to the actual working state, and the total power consumption of the current electrical appliances of the whole vehicle is calculated, and the total power consumption is sent to the energy management module of the vehicle, so that the low-voltage power consumption in the current operating state is managed by the energy management module, so that the low-voltage power consumption is less than the preset threshold. Thus, the problem that the related technology lacks a battery management solution under the dynamic state of the vehicle and cannot control the power supply circuit of the whole vehicle is solved, and the energy saving and consumption reduction of the whole vehicle are achieved by using the control method of low-voltage power energy-saving management.

[0069] Next, the power management device for a vehicle according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0070] Figure 5 It is a block diagram of a power management device for a vehicle according to an embodiment of the present application.

[0071] like Figure 5 As shown, the vehicle power management device 10 includes: an acquisition module 100 , a matching module 200 and a management module 300 .

[0072] Among them, the acquisition module 100 is used to obtain the current operating status of the vehicle and match the optimal scene mode of the vehicle according to the current operating status; the matching module 200 is used to determine the actual working status of multiple electrical devices corresponding to the optimal scene mode from a preset scene-electrical device table based on the optimal scene mode; and the management module 300 is used to control multiple electrical devices to perform corresponding actions according to the actual working status, and calculate the total power consumption of the current electrical appliances of the entire vehicle, and send the total power consumption to the energy management module of the vehicle, so as to manage the low-voltage power consumption in the current operating state through the energy management module, so that the low-voltage power consumption is less than the preset threshold.

[0073] Optionally, in some embodiments, before determining the actual working states of multiple electrical devices corresponding to the optimal scenario mode from a preset scenario-electrical device table based on the optimal scenario mode, the matching module 200 is also used to: construct multiple usage scenarios based on the usage of the target vehicle, and determine a vehicle function requirement list and a scenario survey form for each usage scenario; based on the vehicle function requirement list and the scenario survey form, decompose the work requirements according to multiple electronic and electrical systems of the target vehicle to obtain a scenario-equipment work requirement table; based on preset regulations and safety conditions, classify multiple electronic and electrical systems according to the characteristics of the electronic appliances in the multiple electronic and electrical systems, and obtain a preset scenario-electrical device table based on the classification results and preset scenario definitions.

[0074] Optionally, in some embodiments, the electrical system includes at least one of a power system, a braking system, a steering system, a thermal management system, a safety system, a regulatory system, a cockpit system, and a driving system.

[0075] Optionally, in some embodiments, calculating the total power consumption of the current vehicle electrical appliances includes:

[0076] Based on the preset power consumption calculation formula, the total power consumption of the current vehicle electrical appliances is calculated, where the preset power consumption calculation formula is:

[0077] P = U1*I1+U2*I2;

[0078] Among them, U1 is the output voltage of DCDC, I1 is the output current of DCDC, U2 is the output voltage of the battery, and I2 is the output current of the battery.

[0079] Optionally, in some embodiments, the current operating state includes at least one of a parking and power-off state, a parking and power-on state, and a driving state.

[0080] It should be noted that the above explanation of the embodiment of the vehicle power management method is also applicable to the vehicle power management device of this embodiment, and will not be repeated here.

[0081] According to the vehicle power management device proposed in the embodiment of the present application, by obtaining the current operating state of the vehicle, and matching the optimal scene mode of the vehicle according to the current operating state, and based on the optimal scene mode, determining the actual working state of multiple electrical devices corresponding to the optimal scene mode from the preset scene-electrical device table, and controlling multiple electrical devices to perform corresponding actions according to the actual working state, and calculating the total power consumption of the current electrical appliances of the whole vehicle, and sending the total power consumption to the energy management module of the vehicle, so as to manage the low-voltage power consumption in the current operating state through the energy management module, so that the low-voltage power consumption is less than the preset threshold. Thus, the problem that the related technology lacks a battery management solution under the dynamic state of the vehicle and cannot control the power supply circuit of the whole vehicle is solved, and the control method of low-voltage power energy-saving management is used to achieve energy saving and consumption reduction of the whole vehicle.

[0082] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0083] A memory 601 , a processor 602 , and a computer program stored in the memory 601 and executable on the processor 602 .

[0084] When the processor 602 executes the program, the vehicle power management method provided in the above embodiment is implemented.

[0085] Furthermore, the electronic device further comprises:

[0086] The communication interface 603 is used for communication between the memory 601 and the processor 602 .

[0087] The memory 601 is used to store computer programs that can be executed on the processor 602 .

[0088] The memory 601 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0089] If the memory 601, the processor 602 and the communication interface 603 are implemented independently, the communication interface 603, the memory 601 and the processor 602 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0090] Optionally, in a specific implementation, if the memory 601, the processor 602 and the communication interface 603 are integrated on a chip, the memory 601, the processor 602 and the communication interface 603 can communicate with each other through an internal interface.

[0091] The processor 602 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0092] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned vehicle power management method.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0096] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0097] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0098] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vehicle power management method, characterized in that: The following steps are involved: Acquire the current running state of the vehicle, and match the best scene mode of the vehicle according to the current running state; Based on the optimal scene mode, determining the actual working states of multiple electrical devices corresponding to the optimal scene mode from a preset scene-electrical device table; as well as Controlling the multiple electrical devices to perform corresponding actions according to the actual working state, and calculating the total power consumption of the current electrical appliances of the entire vehicle, and sending the total power consumption to the energy management module of the vehicle, so as to manage the low-voltage power consumption in the current operating state through the energy management module, so that the low-voltage power consumption is less than a preset threshold; Before determining the actual working states of the plurality of electrical devices corresponding to the optimal scene mode from the preset scene-electrical device table based on the optimal scene mode, the method further includes: Build multiple usage scenarios based on the usage of the target vehicle, and determine the vehicle functional requirements list and scenario questionnaire for each usage scenario; Based on the vehicle function requirement list and the scenario survey form, work requirements are decomposed according to multiple electronic and electrical systems of the target vehicle to obtain a scenario-equipment work requirement table; Based on preset regulations and safety conditions, the multiple electronic and electrical systems are classified according to the characteristics of the electronic appliances in the multiple electronic and electrical systems, and the preset scenario-electrical equipment table is obtained according to the classification results and preset scenario definitions.

2. The method according to claim 1, characterized in that The electrical system includes at least one of a power system, a braking system, a steering system, a thermal management system, a safety system, a regulatory system, a cockpit system, and a driving system.

3. The method according to claim 1, characterized in that The calculation of the total power consumption of the current vehicle electrical appliances includes: Based on a preset power consumption calculation formula, the total power consumption of the current vehicle electrical appliances is calculated, wherein the preset power consumption calculation formula is: P = U1*I1+U2*I2; Among them, U1 is the output voltage of DCDC, I1 is the output current of DCDC, U2 is the output voltage of the battery, and I2 is the output current of the battery.

4. The method according to claim 1, characterized in that: The current operating state includes at least one of a parking and power-off state, a parking and power-on state, and a driving state.

5. A power management device for a vehicle, characterized in that: include: An acquisition module, used to acquire the current running state of the vehicle and match the best scene mode of the vehicle according to the current running state; A matching module, configured to determine, based on the optimal scene mode, from a preset scene-electrical device table the actual working states of a plurality of electric devices corresponding to the optimal scene mode; as well as A management module, used to control the multiple electrical devices to perform corresponding actions according to the actual working state, calculate the total power consumption of the current vehicle electrical appliances, and send the total power consumption to the energy management module of the vehicle, so as to manage the low-voltage power consumption in the current operating state through the energy management module, so that the low-voltage power consumption is less than a preset threshold; Before determining the actual working states of the plurality of electric devices corresponding to the optimal scene mode from the preset scene-electrical device table based on the optimal scene mode, the matching module is further used to: Build multiple usage scenarios based on the usage of the target vehicle, and determine the vehicle functional requirements list and scenario questionnaire for each usage scenario; Based on the vehicle function requirement list and the scenario survey form, work requirements are decomposed according to multiple electronic and electrical systems of the target vehicle to obtain a scenario-equipment work requirement table; Based on preset regulations and safety conditions, the multiple electronic and electrical systems are classified according to the characteristics of the electronic appliances in the multiple electronic and electrical systems, and the preset scenario-electrical equipment table is obtained according to the classification results and preset scenario definitions.

6. The device according to claim 5, characterized in that The electrical system includes at least one of a power system, a braking system, a steering system, a thermal management system, a safety system, a regulatory system, a cockpit system, and a driving system.

7. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the power management method for a vehicle as described in any one of claims 1 to 4.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the vehicle power management method as described in any one of claims 1 to 4.

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