Method for supplying power to electric equipment, vehicle and storage medium

Abstract

The invention provides a method for supplying power to electric equipment, a vehicle and a storage medium, and belongs to the technical field of automobiles. The method comprises the steps that when the vehicle is in a dormant state, the electric quantity of a storage battery of the vehicle is obtained; when the electric quantity of the storage battery is smaller than the preset electric quantity, the conversion efficiency of multiple power supply paths of the vehicle is obtained; based on the conversion efficiency of the plurality of power supply paths, determining a target power supply path with the highest conversion efficiency from the plurality of power supply paths; and waking up the target power supply path to supply power to electric equipment of the vehicle. When the electric quantity of the storage battery is smaller than the preset threshold value, the target power supply path with the high conversion efficiency is awakened, the target power supply path is adopted to supply power to the electric equipment, it is guaranteed that when the vehicle is in the dormant state for a long time, power can be continuously supplied to the electric equipment, and the target power supply path with the highest conversion efficiency is adopted; it is guaranteed that the electric quantity supplied to the electric equipment is sufficient, and when the vehicle is in the dormant state, the electric equipment can still keep the normal working state for a long time.

Description

Technical Field

[0001] The present application belongs to the field of automobile technology, and in particular relates to a method for supplying power to an electrical device, a vehicle and a storage medium. Background Art

[0002] With the development of automobile technology, the functions that vehicles can realize are becoming more and more abundant. In order to optimize the user experience, some functions need to remain powered on even when the vehicle is in sleep mode. That is, when the vehicle is in sleep mode, it is still necessary to power these electrical devices. For example, in order for the vehicle to receive remote control commands issued by the user in sleep mode, the vehicle's communication module needs to remain powered on.

[0003] When the vehicle is in a dormant state, the generator and power battery and other devices no longer work, and the battery supplies power to the electrical equipment. However, as the functions of the vehicle increase, more and more electrical equipment is in a dormant state, and the battery has limited power. Therefore, it cannot supply power to the electrical equipment for a long time, resulting in the problem that the electrical equipment cannot maintain normal operation for a long time. Summary of the invention

[0004] The purpose of the present application is to provide a method, a vehicle and a storage medium for supplying power to an electrical device, aiming to solve the problem of power shortage caused by a traditional battery supplying power to an electrical device when the vehicle is in a dormant state.

[0005] A first aspect of an embodiment of the present application provides a method for supplying power to an electric device, the method comprising:

[0006] When the vehicle is in a dormant state, obtaining the battery power of the vehicle;

[0007] When the battery power is less than a preset power, obtaining conversion efficiencies of multiple power supply paths of the vehicle;

[0008] Based on the conversion efficiencies of the multiple power supply paths, determining a target power supply path with the highest conversion efficiency from the multiple power supply paths;

[0009] The target power supply path is awakened to supply power to the electrical equipment of the vehicle.

[0010] In some embodiments, obtaining conversion efficiencies of multiple power supply paths of the vehicle includes:

[0011] Acquire a first conversion efficiency of a power supply path corresponding to a power generation system of the vehicle and a second conversion efficiency of a power supply path corresponding to a power battery;

[0012] Accordingly, the step of determining a target power supply path with the highest conversion efficiency from among the multiple power supply paths based on the conversion efficiencies of the multiple power supply paths includes:

[0013] Based on the first conversion efficiency and the second conversion efficiency, a target power supply path with the highest conversion efficiency is determined from the power supply path corresponding to the power generation system and the power supply path corresponding to the power battery.

[0014] In some embodiments, obtaining conversion efficiencies of multiple power supply paths of the vehicle includes:

[0015] Determining a third conversion efficiency of a power supply path corresponding to the DC converter and a fourth conversion efficiency of a power supply path corresponding to the battery;

[0016] The determining, based on the conversion efficiencies of the multiple power supply paths, a target power supply path with the highest conversion efficiency from the multiple power supply paths comprises:

[0017] Based on the third conversion efficiency and the fourth conversion efficiency, a target power supply path with the highest conversion efficiency is determined from the power supply path corresponding to the DC converter and the power supply path corresponding to the battery.

[0018] In some embodiments, the obtaining of a first conversion efficiency of a power supply path corresponding to a power generation system of the vehicle and a second conversion efficiency of a power supply path corresponding to a power battery includes:

[0019] Obtain the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid system at idle state;

[0020] determining the product of the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid power system as the first conversion efficiency;

[0021] Get the battery temperature of the power battery;

[0022] Based on the corresponding relationship between temperature and conversion efficiency, a second conversion efficiency corresponding to the battery temperature is determined.

[0023] In some embodiments, obtaining the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer, and the maximum conversion efficiency of the hybrid power system in an idle state includes:

[0024] Obtain the corresponding relationship between the speed, torque and engine speed efficiency in the idle state;

[0025] Based on the correspondence between the rotational speed, torque and engine conversion efficiency, the maximum conversion efficiency of the engine is determined from the correspondence between the rotational speed, torque and engine speed efficiency, with satisfying the engine driving torque as a selection condition;

[0026] Obtain the corresponding relationship between the speed, torque and reducer conversion efficiency under idle state;

[0027] Based on the correspondence between the rotation speed, torque and the conversion efficiency of the reducer, the maximum conversion efficiency of the reducer is determined from the correspondence between the rotation speed, torque and the conversion efficiency of the reducer, with satisfying the engine driving torque as a selection condition;

[0028] Obtain the corresponding relationship between the speed, torque and conversion efficiency of the hybrid system under idle state;

[0029] Based on the correspondence between the rotational speed, torque and hybrid power system conversion efficiency, the maximum conversion efficiency of the hybrid power system is determined from the correspondence between the rotational speed, torque and hybrid power system conversion efficiency, with satisfying the engine driving torque as a selection condition.

[0030] In some embodiments, the method further comprises:

[0031] Before waking up the target power supply path to supply power to the power-consuming device, detecting the power supply capability of the target power supply path;

[0032] If the power supply capability meets the preset condition corresponding to the target power supply path, waking up the target power supply path to supply power to the power-consuming device;

[0033] If the power supply capability does not meet the preset condition corresponding to the target power supply path, other power supply paths are determined based on the conversion efficiency of the multiple power supply paths.

[0034] In some embodiments, the method further comprises:

[0035] If there is no power supply path that meets the corresponding preset conditions among the multiple power supply paths provided by the vehicle, stop detecting the battery power;

[0036] Output a prompt message, wherein the prompt message is used to prompt the user that the remaining energy of the vehicle is insufficient.

[0037] In some embodiments, the method further comprises:

[0038] When the battery power is greater than or equal to the preset power, start timing;

[0039] When the timing duration reaches the preset duration, the step of obtaining the battery power of the vehicle is continued.

[0040] A second aspect of an embodiment of the present application provides a device for supplying power to an electric device, the device comprising:

[0041] A first acquisition unit, used for acquiring the battery power of the vehicle when the vehicle is in a dormant state;

[0042] A second acquisition unit, configured to acquire conversion efficiencies of multiple power supply paths of the vehicle when the battery power is less than a preset power;

[0043] a determining unit, configured to determine a target power supply path with the highest conversion efficiency from among the multiple power supply paths based on the conversion efficiencies of the multiple power supply paths;

[0044] A wake-up unit is used to wake up the target power supply path to supply power to the electrical equipment of the vehicle.

[0045] In some embodiments, the second acquisition unit is used to acquire a first conversion efficiency of a power supply path corresponding to the power generation system of the vehicle and a second conversion efficiency of a power supply path corresponding to the power battery;

[0046] Correspondingly, the determination unit is used to determine a target power supply path with the highest conversion efficiency from the power supply path corresponding to the power generation system and the power supply path corresponding to the power battery based on the first conversion efficiency and the second conversion efficiency.

[0047] In some embodiments, the second acquisition unit is used to determine a third conversion efficiency of a power supply path corresponding to the DC converter and a fourth conversion efficiency of a power supply path corresponding to the battery;

[0048] The determining unit is used to determine a target power supply path with the highest conversion efficiency from a power supply path corresponding to the DC converter and a power supply path corresponding to the battery based on the third conversion efficiency and the fourth conversion efficiency.

[0049] In some embodiments, the second acquisition unit is used to acquire the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid power system in an idle state; determine the product of the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid power system as the first conversion efficiency; acquire the battery temperature of the power battery; and determine the second conversion efficiency corresponding to the battery temperature based on the corresponding relationship between temperature and conversion efficiency.

[0050] In some embodiments, the second acquisition unit is used to obtain the correspondence between the speed, torque and engine speed efficiency in the idle state; based on the correspondence between the speed, torque and engine conversion efficiency, with the engine driving torque as the selection condition, the maximum conversion efficiency of the engine is determined from the correspondence between the speed, torque and engine speed efficiency; obtain the correspondence between the speed, torque and reducer conversion efficiency in the idle state; based on the correspondence between the speed, torque and reducer conversion efficiency, with the engine driving torque as the selection condition, the maximum conversion efficiency of the reducer is determined from the correspondence between the speed, torque and reducer conversion efficiency; obtain the correspondence between the speed, torque and hybrid power system conversion efficiency in the idle state; based on the correspondence between the speed, torque and hybrid power system conversion efficiency, with the engine driving torque as the selection condition, the maximum conversion efficiency of the hybrid power system is determined from the correspondence between the speed, torque and hybrid power system conversion efficiency.

[0051] In some embodiments, the apparatus further comprises:

[0052] A detection unit, used to detect the power supply capability of the target power supply path before waking up the target power supply path to supply power to the power-consuming device;

[0053] A wake-up unit, configured to wake up the target power supply path to supply power to the power-consuming device if the power supply capability meets a preset condition corresponding to the target power supply path;

[0054] The determining unit is further configured to determine other power supply paths based on conversion efficiencies of the multiple power supply paths if the power supply capacity does not meet a preset condition corresponding to the target power supply path.

[0055] In some embodiments, the apparatus further comprises:

[0056] A control unit, configured to stop detecting the battery power if there is no power supply path satisfying the corresponding preset condition among the multiple power supply paths provided by the vehicle;

[0057] The output unit is used to output a prompt message, wherein the prompt message is used to prompt the user that the remaining energy of the vehicle is insufficient.

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

[0059] A starting unit, used for starting timing when the battery power is greater than or equal to the preset power;

[0060] The first acquisition unit is also used to continue executing the step of acquiring the battery power of the vehicle when the timing duration reaches a preset duration.

[0061] A third aspect of an embodiment of the present application provides a vehicle, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for supplying power to an electrical device as described above when executing the computer program.

[0062] A fourth aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for supplying power to an electrical device as described above is implemented.

[0063] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0064] In the embodiment of the present application, when the vehicle is in a dormant state, the battery power of the vehicle is detected. When it is detected that the battery power is less than a preset power, the conversion efficiency of multiple power supply paths of the vehicle is obtained, and the target power supply path with the highest conversion efficiency is selected based on the conversion efficiency of the multiple power supply paths, and the power consumption equipment of the vehicle is powered by the target power supply path. In this way, when the battery power is less than a preset threshold, the target power supply path with high conversion efficiency is awakened, and the target power supply path is used to power the power consumption equipment, ensuring that the vehicle can continue to power the power consumption equipment when it is in a dormant state for a long time, and the target power supply path with the highest conversion efficiency is used to ensure that the power supply to the power consumption equipment is sufficient, so that when the vehicle is in a dormant state, the power consumption equipment can also maintain a normal working state for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A schematic diagram of a system involved in a method for supplying power to an electrical device provided by an exemplary embodiment is shown;

[0066] Figure 2 A schematic diagram showing various power supply paths provided by an exemplary embodiment;

[0067] Figure 3 A schematic flow chart of a method for supplying power to an electrical device provided by an exemplary embodiment is shown;

[0068] Figure 4 A schematic flow chart of a method for selecting a target power supply path provided by an exemplary embodiment is shown;

[0069] Figure 5 A schematic flow chart of a method for selecting a target power supply path provided by an exemplary embodiment is shown;

[0070] Figure 6 A schematic flow chart of a method for selecting a target power supply path provided by an exemplary embodiment is shown;

[0071] Figure 7 A flowchart of a method for supplying power to an electrical device by combining a storage battery provided by an exemplary embodiment is shown;

[0072] Figure 8 A schematic structural diagram of a device for supplying power to an electrical device provided by an exemplary embodiment is shown;

[0073] Fig. 9 It is a schematic diagram of the structure of a vehicle provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0074] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0075] 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 the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0076] With the development of automobile technology, the functions that vehicles can realize are becoming more and more abundant. In order to optimize the user experience, some functions need to remain powered on even when the vehicle is in sleep mode. That is, when the vehicle is in sleep mode, it is still necessary to power these electrical devices. For example, in order for the vehicle to receive remote control commands issued by the user in sleep mode, the vehicle's communication module needs to remain powered on.

[0077] When the vehicle is in a dormant state, the generator and power battery and other devices no longer work, and the battery supplies power to the power supply equipment. However, as the functions of the vehicle increase, more and more power-consuming devices are in the dormant state of the vehicle, and the battery has limited power. Therefore, it cannot supply power to the power-consuming devices for a long time, resulting in the problem that the power-consuming devices cannot maintain normal operation for a long time.

[0078] The present application provides a method, device, vehicle and storage medium for supplying power to an electric device. When the vehicle is in a dormant state, the battery can be used to supply power to the vehicle's electric device, so as to ensure that the vehicle's power supply device can work for a long time when the vehicle is in a dormant state. Figure 1 , which shows a schematic diagram of a system involved in a method for supplying power to an electrical device provided by an exemplary embodiment. Figure 1 The system includes: a battery management module 10, an electrical device 20, a storage battery 30, a power battery 40, a power generation system 50 and a vehicle controller 60.

[0079] Among them, the battery management module 10 is used to periodically obtain the battery 30 power of the battery 30, and send the battery 30 power to the vehicle controller 60. The vehicle controller 60 is used to receive the battery management module 10 that is periodically awakened, receive the battery 30 power sent by the battery management module 10, and determine the target power supply path for powering the electrical equipment 20 according to the battery 30 power. When the target power supply path changes, the target power supply path is awakened by the vehicle controller 60. The battery 30, the power battery 40 and the power generation system 50 can all be used as power supply paths for the electrical equipment 20 of the vehicle. Among them, after the vehicle is powered off and enters a dormant state, the battery 30 is used by default to power the electrical equipment 20. When other power supply paths are awakened, other power supply devices are used to power the battery 30.

[0080] See also Figure 2 , which shows a schematic diagram of various power supply paths provided by an exemplary embodiment. Figure 2 The power generation system includes an engine, a reducer and a hybrid power system. The power generation system is connected to a power battery and a DC converter respectively. The output end of the power battery is also connected to the DC converter. The DC converter is connected to the power device and the battery respectively. It can be seen that the available power supply paths include:

[0081] Power supply path 1: engine → reducer → hybrid power system → DC converter → electrical equipment;

[0082] Power supply path 2: power battery → DC converter → power equipment;

[0083] Power supply path 3: engine → reducer → hybrid system → DC converter → battery → electrical equipment;

[0084] Power supply path 4: power battery → DC converter → battery → power equipment;

[0085] Power supply path 5: battery → electrical equipment.

[0086] One point that needs to be explained is that the power battery can also be charged through the power generation system. The process of the power generation system charging the power battery can be carried out when the vehicle is started or when the vehicle is dormant. In the embodiments of the present application, no specific limitation is made to this.

[0087] Among them, the engine and the reducer are the engine and the reducer in the vehicle power system, the hybrid system can be a belt-driven starter generator (BSG) system, etc., the power battery can be a 48V battery, and the storage battery can be a 12V battery.

[0088] In the embodiment of the present application, when the vehicle is in a dormant state, the battery power of the vehicle is detected. When it is detected that the battery power is less than a preset power, the conversion efficiency of multiple power supply paths of the vehicle is obtained, and the target power supply path with the highest conversion efficiency is selected based on the conversion efficiency of the multiple power supply paths, and the power consumption equipment of the vehicle is powered by the target power supply path. In this way, when the battery power is less than a preset threshold, the target power supply path with high conversion efficiency is awakened, and the target power supply path is used to power the power consumption equipment, ensuring that the vehicle can continue to power the power consumption equipment when it is in a dormant state for a long time, and the target power supply path with the highest conversion efficiency is used to ensure that the power supply to the power consumption equipment is sufficient, so that when the vehicle is in a dormant state, the power consumption equipment can also maintain a normal working state for a long time.

[0089] See also Figure 3 , which shows a flow chart of a method for supplying power to an electric device provided by an exemplary embodiment. As an example but not a limitation, the method can be applied to a vehicle, which is equipped with the above system.

[0090] S301, when the vehicle is in a dormant state, the vehicle obtains the battery power of the vehicle.

[0091] The vehicle is in a dormant state when the vehicle is not in use after the power is turned off. When the vehicle is in a dormant state, the battery power of the vehicle is periodically detected. After the vehicle enters the dormant state, the battery is started to power the vehicle's electrical equipment. In the process of using the battery to power the vehicle's electrical equipment, the battery management module is periodically awakened to obtain the battery power through the battery management module.

[0092] In some embodiments, the vehicle compares the acquired battery power with the preset power. If the battery power is less than the preset power, the vehicle executes step S302; if the battery power is greater than or equal to the preset power, the vehicle continues to use the battery to power the electrical equipment, and starts timing so that the battery power is monitored again when the detection cycle is reached. Accordingly, when the battery power is greater than or equal to the preset power, the vehicle starts timing; when the timing duration reaches the preset duration, the step of obtaining the battery power of the vehicle is continued.

[0093] The preset power and the preset duration can be set as needed, and in the embodiment of the present application, the preset power and the preset duration are not specifically limited. For example, the preset power can be 30%, 25% or 20%, etc.; the preset duration can be 10 minutes, 30 minutes or 1 hour, etc.

[0094] The vehicle periodically obtains the vehicle battery power so that when it detects that the battery power is less than the preset power, it can replace the power supply path in time to prevent the battery from running out of power.

[0095] It should be noted that when the vehicle enters the dormant state, the step of detecting the battery power can be immediately executed. When the battery power is detected to be greater than or equal to the preset power, the battery is used to supply power to the electrical equipment; when the battery power is detected to be less than the preset power, step S302 is directly executed.

[0096] S302, when the battery power is less than a preset power, the vehicle obtains conversion efficiencies of multiple power supply paths of the vehicle.

[0097] When the battery power is less than the preset power, the vehicle determines that the power supply path needs to be replaced, and selects the power supply path with the highest conversion efficiency from the available power supply paths provided by the vehicle. Accordingly, the vehicle first determines the replaceable power supply path, and then determines the conversion efficiency of the power supply path.

[0098] The conversion efficiency refers to the efficiency of transferring electricity from the current power supply node to the next power supply node. Different power supply paths have different factors affecting the conversion efficiency. Therefore, different methods are needed to determine the conversion efficiency of different power supply paths.

[0099] S303: The vehicle determines a target power supply path with the highest conversion efficiency from among the multiple power supply paths based on the conversion efficiencies of the multiple power supply paths.

[0100] The vehicle selects the target power supply path with the highest conversion efficiency from multiple power supply paths based on multiple conversion efficiencies. When there is only one power supply node in the power supply path, the conversion efficiency of the power supply node is the conversion efficiency of the power supply path; when there are multiple power supply nodes in the power supply path, the product of the conversion efficiencies of the multiple power supply nodes is the conversion efficiency of the power supply path.

[0101] In some embodiments, the vehicle calculates the conversion efficiency of multiple power supply paths of the vehicle under the current driving parameters, compares the conversion efficiency of multiple power supply paths, and thus determines the target power supply path with the highest conversion efficiency. In some embodiments, the vehicle can calculate the power supply node with the highest conversion efficiency for each branched power supply node, and form the power supply path where the power supply node with the highest conversion efficiency is located into the target power supply path.

[0102] S304, the vehicle wakes up the target power supply path to supply power to the electrical equipment of the vehicle.

[0103] After determining the target power supply path, the vehicle wakes up the target path and supplies power to the power-consuming device through the target path.

[0104] In some embodiments, before the vehicle wakes up the target power supply path to supply power to the power-consuming device, it is determined whether the power supply capacity of the power supply path meets the power demand of the power-consuming device. Accordingly, before the target power supply path is awakened to supply power to the power-consuming device, the power supply capacity of the target power supply path is detected; if the power supply capacity meets the preset conditions corresponding to the target power supply path, the target power supply path is awakened to supply power to the power-consuming device; if the power supply capacity does not meet the preset conditions corresponding to the target power supply path, other power supply paths are determined based on the conversion efficiency of the multiple power supply paths.

[0105] For example, see Figure 4 , when the target power supply path is the power supply path where the power battery is located, the power supply capacity refers to the remaining power of the power battery. The preset condition is that the remaining power of the power battery after charging the storage battery is greater than the preset remaining power. Accordingly, if the remaining power satisfies that the remaining power is greater than the preset power after charging the storage battery, the power battery is awakened to supply power to the power-consuming device; if the remaining power does not satisfy that the remaining power is greater than the preset power after charging the storage battery, the vehicle takes the path where the power generation system is located as the target power supply path, and continues to determine whether the power supply capacity of the path where the power generation system is located meets the corresponding preset condition. Accordingly, the power supply capacity of the path where the power generation system is located refers to the remaining fuel volume, and the corresponding preset condition means that the remaining fuel volume after power supply is greater than the preset fuel volume. Accordingly, if the remaining fuel volume satisfies that the remaining fuel volume is greater than the preset fuel volume after charging the storage battery, the power generation system is awakened to supply power to the power-consuming device; if the remaining fuel volume does not satisfy that the remaining fuel volume is greater than the preset fuel volume after charging the storage battery, the vehicle does not wake up the power supply path where the power generation system is located.

[0106] If there is no power supply path that meets the corresponding preset conditions among the multiple power supply paths provided by the vehicle, the battery power detection is stopped; and a prompt message is output, which is used to prompt the user that the remaining energy of the vehicle is insufficient.

[0107] Continuing with the above example, when the paths where the power battery and the power generation system are located do not meet the corresponding preset conditions, the vehicle stops detecting the battery power and outputs a prompt message, which is used to remind the user that the remaining energy of the vehicle is insufficient. The prompt message can also be used to remind the user to stop maintaining power supply to the electrical equipment.

[0108] In this implementation, after determining the target power supply path, whether to start the target power supply path is determined based on the power supply path of the target power supply path, thereby preventing the problem that when the target power supply path has high conversion efficiency but insufficient power supply capacity, starting the target power supply path cannot power the electrical equipment, thereby reducing the use of invalid target power supply paths.

[0109] In addition, in some embodiments, when it is detected that the vehicle has insufficient remaining energy, the vehicle continues to use the battery to power the electrical equipment. In some embodiments, when it is detected that the vehicle has insufficient remaining energy to power the electrical equipment, the vehicle stops using the battery to power the electrical equipment to preserve the remaining power in the battery to prevent it from affecting the next start of the vehicle.

[0110] One point that needs to be explained is that after the vehicle exits the sleep state and enters the start state, the current target power supply path can still be maintained to supply power to the vehicle's electrical equipment.

[0111] In the embodiment of the present application, when the vehicle is in a dormant state, the battery power of the vehicle is detected. When it is detected that the battery power is less than a preset power, the conversion efficiency of multiple power supply paths of the vehicle is obtained, and the target power supply path with the highest conversion efficiency is selected based on the conversion efficiency of the multiple power supply paths, and the power consumption equipment of the vehicle is powered by the target power supply path. In this way, when the battery power is less than a preset threshold, the target power supply path with high conversion efficiency is awakened, and the target power supply path is used to power the power consumption equipment, ensuring that the vehicle can continue to power the power consumption equipment when it is in a dormant state for a long time, and the target power supply path with the highest conversion efficiency is used to ensure that the power supply to the power consumption equipment is sufficient, so that when the vehicle is in a dormant state, the power consumption equipment can also maintain a normal working state for a long time.

[0112] In some embodiments, the vehicle can calculate the power supply node with the highest conversion efficiency for each branched power supply node, and form the power supply path where the power supply node with the highest conversion efficiency is located into the target power supply path. The following is an explanation of the method for determining the target power supply path based on the conversion efficiency of different power supply nodes. Figure 5 , which shows a flow chart of a method for supplying power to an electric device provided by an exemplary embodiment. As an example but not a limitation, the method can be applied to a vehicle, which is equipped with the above system.

[0113] S501, when the vehicle is in a dormant state, the vehicle obtains the battery power of the vehicle.

[0114] The principle of this step is the same as that of step S301 and will not be repeated here.

[0115] S502, when the battery power is less than a preset power, the vehicle obtains a first conversion efficiency of a power supply path corresponding to the power generation system of the vehicle and a second conversion efficiency of a power supply path corresponding to the power battery.

[0116] Since the conversion efficiency of the vehicle's power generation system and power battery are respectively related to different factors, the conversion efficiency is determined according to different factors. This step can be implemented by the following steps S5021-S5024, including:

[0117] S5021, the vehicle obtains the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid power system in the idle state.

[0118] The conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid system are related to the engine speed and torque. In some embodiments, the vehicle obtains the corresponding relationship between the speed, torque and engine speed efficiency in an idle state; based on the corresponding relationship between the speed, torque and engine conversion efficiency, the maximum conversion efficiency of the engine is determined from the corresponding relationship between the speed, torque and engine speed efficiency, with satisfying the engine driving torque as a selection condition.

[0119] The vehicle obtains the engine speed, determines the torque corresponding to the maximum engine speed in the idle state based on the corresponding relationship between the speed and torque in the idle state, and then determines the maximum conversion efficiency of the engine based on the corresponding relationship between the torque and conversion efficiency. The corresponding relationship between the speed and torque and the corresponding relationship between the torque and conversion efficiency can be a pre-calibrated speed-torque map model and a BSG torque-speed efficiency model.

[0120] In some embodiments, the vehicle obtains the correspondence between the speed, torque and reducer conversion efficiency in the idle state; based on the correspondence between the speed, torque and reducer conversion efficiency, with satisfying the engine driving torque as a selection condition, the maximum conversion efficiency of the reducer is determined from the correspondence between the speed, torque and reducer conversion efficiency.

[0121] The vehicle obtains the engine speed, determines the torque corresponding to the maximum engine speed in the idle state based on the corresponding relationship between the speed and the torque in the idle state, and then determines the maximum conversion efficiency of the reducer based on the corresponding relationship between the torque and the conversion efficiency of the reducer. The corresponding relationship between the speed and the torque, and the corresponding relationship between the torque and the conversion efficiency of the reducer can be a pre-calibrated speed-torque map model and a torque-speed efficiency model.

[0122] In some embodiments, the vehicle obtains the correspondence between the speed, torque and hybrid power system conversion efficiency in an idle state; based on the correspondence between the speed, torque and hybrid power system conversion efficiency, with satisfying the engine driving torque as a selection condition, the maximum conversion efficiency of the hybrid power system is determined from the correspondence between the speed, torque and hybrid power system conversion efficiency.

[0123] The vehicle obtains the engine speed, determines the torque corresponding to the maximum engine speed in the idle state based on the corresponding relationship between the speed and the torque in the idle state, and then determines the maximum conversion efficiency of the hybrid system based on the corresponding relationship between the torque and the conversion efficiency of the hybrid system. The corresponding relationship between the speed and the torque, and the corresponding relationship between the torque and the conversion efficiency of the hybrid system can be a pre-calibrated speed-torque map model and a torque-speed efficiency model.

[0124] In some embodiments, for any maximum conversion efficiency, the vehicle can determine the conversion efficiency based on a multi-value optimization algorithm or a hybrid genetic algorithm according to the torque that meets the engine driving conditions and the corresponding relationship between the torque and the conversion efficiency, determine the optimal efficiency range [n1, n2], and then determine the maximum conversion efficiency based on the efficiency range.

[0125] S5022: The vehicle determines the product of the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer, and the maximum conversion efficiency of the hybrid power system as the first conversion efficiency.

[0126] Since the engine, accelerator and hybrid power system are connected in series in the power generation system, the first conversion efficiency of the power generation system is the product of the maximum conversion efficiencies of the three, that is, η1Max=ηe*ηM*ηt, where η1Max is the first conversion efficiency, ηe is the maximum conversion efficiency of the engine, ηM is the maximum conversion efficiency of the reducer, and ηt is the maximum conversion efficiency of the hybrid power system.

[0127] S5023, the vehicle obtains the battery temperature of the power battery.

[0128] The conversion efficiency of the power battery is related to the battery temperature of the power battery, so in this step, the vehicle obtains the battery temperature of the power battery. The vehicle can obtain the battery temperature of the power battery through a battery management module.

[0129] S5024: The vehicle determines a second conversion efficiency corresponding to the battery temperature based on the corresponding relationship between temperature and conversion efficiency.

[0130] The vehicle can determine the second conversion efficiency based on the power battery and conversion efficiency model at different temperatures. Accordingly, the vehicle stores a pre-calibrated power battery and conversion efficiency model. When the second conversion efficiency needs to be determined, the stored power battery and conversion efficiency model is called to determine the second conversion efficiency corresponding to the current battery temperature.

[0131] It should be noted that the vehicle may first determine the first conversion efficiency and then determine the second conversion efficiency; or first determine the second conversion efficiency and then determine the first conversion efficiency; or simultaneously determine the first conversion efficiency and the second conversion efficiency. In the embodiment of the present application, the order of obtaining the first conversion efficiency and the second conversion efficiency is not specifically limited.

[0132] In the embodiments of the present application, the power supply path corresponding to the power generation system and the power supply path corresponding to the power battery are taken as examples for explanation. In actual applications, when the vehicle also provides other power supply paths, the target power supply path can also be determined by determining the conversion efficiency of the power supply path through the solution provided by the present application.

[0133] S503: The vehicle determines a target power supply path with the highest conversion efficiency from the power supply path corresponding to the power generation system and the power supply path corresponding to the power battery based on the first conversion efficiency and the second conversion efficiency.

[0134] Based on the first conversion efficiency and the second conversion efficiency, the vehicle selects a power supply path with higher conversion efficiency from the corresponding power supply paths as the target power supply path. Accordingly, when the first conversion efficiency is greater than the second conversion efficiency, the vehicle determines the power supply path corresponding to the power generation system as the target power supply path; when the first conversion efficiency is less than or equal to the second conversion efficiency, the vehicle determines the power supply path corresponding to the power battery as the target power supply path. By selecting a target power supply path with higher conversion efficiency, the power supply equipment can still be used after the power supply path is replaced.

[0135] In some embodiments, the vehicle may also determine the power demand according to the power demand of the power-consuming device, and when the power demand is greater than the preset power demand, select multiple power supply paths to supply power to the power-consuming device. For example, when the power demand of the power-consuming device is greater than the preset power demand, the power supply path corresponding to the power generation system and the power supply path corresponding to the power battery are determined as the target power supply path.

[0136] The power demand refers to the amount of power required by the electrical equipment at the same time. In some embodiments, the power demand of the vehicle's electrical equipment may suddenly change. When the power demand of the electrical equipment suddenly increases, if the current power supply path cannot meet the power demand, other power supply paths are started to supply power to the electrical equipment. In this way, power is supplied to the electrical equipment through multiple power supply paths, so that when the power demand of the electrical equipment increases, the vehicle can also supply power to the electrical equipment in a timely manner, ensuring the normal operation of the electrical equipment and the stability of the power parameters of the electrical equipment.

[0137] S504, the vehicle wakes up the target power supply path to supply power to the electrical equipment of the vehicle.

[0138] The principle of this step is the same as that of step S304 and will not be repeated here.

[0139] In the embodiment of the present application, when the vehicle is in a dormant state, the battery power of the vehicle is detected. When it is detected that the battery power is less than a preset power, the conversion efficiency of multiple power supply paths of the vehicle is obtained, and the target power supply path with the highest conversion efficiency is selected based on the conversion efficiency of the multiple power supply paths, and the power consumption equipment of the vehicle is powered by the target power supply path. In this way, when the battery power is less than a preset threshold, the target power supply path with high conversion efficiency is awakened, and the target power supply path is used to power the power consumption equipment, ensuring that the vehicle can continue to power the power consumption equipment when it is in a dormant state for a long time, and the target power supply path with the highest conversion efficiency is used to ensure that the power supply to the power consumption equipment is sufficient, so that when the vehicle is in a dormant state, the power consumption equipment can also maintain a normal working state for a long time.

[0140] In addition to selecting the power supply path where the power generation system or power battery is located, the vehicle can also choose to directly power the power consumption equipment through the DC converter, or charge the battery through the power supply path and then power the power consumption equipment from the battery. Figure 6 , which shows a flowchart of a method for combining a storage battery to supply power to an electric device provided by an exemplary embodiment. As an example but not a limitation, the method can be applied to a vehicle, which is equipped with the above system.

[0141] S601, when the vehicle is in a dormant state, the vehicle obtains the battery power of the vehicle.

[0142] The principle of this step is the same as that of step S301 and will not be repeated here.

[0143] S602: The vehicle determines a third conversion efficiency of a power supply path corresponding to the DC converter and a fourth conversion efficiency of a power supply path corresponding to the battery.

[0144] The third conversion efficiency is related to the temperature of the load of the DC converter. Therefore, the conversion efficiency of directly supplying power to the electric device through the DC converter is different from the conversion efficiency of charging the battery through the DC converter. Therefore, it may happen that the total efficiency of first converting to the battery and then charging the electric device by the battery is higher than the efficiency of directly charging the electric device. Therefore, the third conversion efficiency and the fourth conversion efficiency are determined separately in this step.

[0145] In some embodiments, the vehicle can determine the third conversion efficiency based on different load temperatures and conversion efficiency models. Accordingly, the vehicle stores a pre-calibrated load temperature and conversion efficiency model, and when the third conversion efficiency needs to be determined, the stored load temperature and conversion efficiency model is called to determine the third conversion efficiency corresponding to the current battery temperature.

[0146] The fourth conversion efficiency is the product of the conversion efficiency of the battery and the conversion efficiency of the DC converter, wherein the vehicle can determine the conversion efficiency of the battery based on different battery temperatures and conversion efficiency models. Accordingly, the vehicle stores a pre-calibrated battery temperature and conversion efficiency model, and when the fourth conversion efficiency needs to be determined, the stored battery temperature and conversion efficiency model is called to determine the conversion efficiency corresponding to the current battery temperature, and then the conversion efficiency of the DC converter is determined based on different load temperatures and conversion efficiency models, and the product of the two is determined as the fourth conversion efficiency.

[0147] It should be noted that the vehicle may first determine the third conversion efficiency and then determine the fourth conversion efficiency; or first determine the fourth conversion efficiency and then determine the third conversion efficiency; or determine the third conversion efficiency and the fourth conversion efficiency at the same time. In the embodiment of the present application, the order of obtaining the third conversion efficiency and the fourth conversion efficiency is not specifically limited.

[0148] S603: The vehicle determines a target power supply path with the highest conversion efficiency from the power supply path corresponding to the DC converter and the power supply path corresponding to the battery based on the third conversion efficiency and the fourth conversion efficiency.

[0149] The principle of this step is the same as that of step S503 and will not be repeated here.

[0150] S604, the vehicle wakes up the target power supply path to supply power to the electrical equipment of the vehicle.

[0151] The principle of this step is the same as that of step S304 and will not be repeated here.

[0152] In the embodiment of the present application, when the vehicle is in a dormant state, the battery power of the vehicle is detected. When it is detected that the battery power is less than a preset power, the conversion efficiency of multiple power supply paths of the vehicle is obtained, and the target power supply path with the highest conversion efficiency is selected based on the conversion efficiency of the multiple power supply paths, and the power consumption equipment of the vehicle is powered by the target power supply path. In this way, when the battery power is less than a preset threshold, the target power supply path with high conversion efficiency is awakened, and the target power supply path is used to power the power consumption equipment, ensuring that the vehicle can continue to power the power consumption equipment when it is in a dormant state for a long time, and the target power supply path with the highest conversion efficiency is used to ensure that the power supply to the power consumption equipment is sufficient, so that when the vehicle is in a dormant state, the power consumption equipment can also maintain a normal working state for a long time.

[0153] In some embodiments, the vehicle can also select different power supply paths by combining multiple power supply nodes. Figure 7, which shows a flowchart of a method for combining a storage battery to supply power to an electric device provided by an exemplary embodiment. As an example but not a limitation, the method can be applied to a vehicle, which is equipped with the above system.

[0154] S701, when the vehicle is in a dormant state, the vehicle obtains the battery power of the vehicle.

[0155] The principle of this step is the same as that of step S301 and will not be repeated here.

[0156] S702, when the battery power is less than a preset power, the vehicle obtains a first conversion efficiency of a power supply path corresponding to a power generation system of the vehicle and a second conversion efficiency of a power supply path corresponding to a power battery.

[0157] The principle of this step is the same as that of step S302 and will not be repeated here.

[0158] S703: The vehicle determines a third conversion efficiency of a power supply path corresponding to the DC converter and a fourth conversion efficiency of a power supply path corresponding to the battery.

[0159] The principle of this step is the same as that of step S602 and will not be repeated here.

[0160] S704: When the third conversion efficiency is greater than the fourth conversion efficiency, the vehicle determines the power supply path corresponding to the DC converter as the target power supply path based on the first conversion efficiency and the second conversion efficiency.

[0161] The principle of this step is the same as that of step S303 and will not be repeated here.

[0162] S705: When the third conversion efficiency is less than or equal to the fourth conversion efficiency, the vehicle determines the power supply path corresponding to the battery as the target power supply path based on the first conversion efficiency and the second conversion efficiency.

[0163] The principle of this step is the same as that of step S303 and will not be repeated here.

[0164] S706, the vehicle wakes up the target power supply path to supply power to the electrical equipment of the vehicle.

[0165] The principle of this step is the same as that of step S304 and will not be repeated here.

[0166] In the embodiment of the present application, when the vehicle is in a dormant state, the battery power of the vehicle is detected. When it is detected that the battery power is less than a preset power, the conversion efficiency of multiple power supply paths of the vehicle is obtained, and the target power supply path with the highest conversion efficiency is selected based on the conversion efficiency of the multiple power supply paths, and the power consumption equipment of the vehicle is powered by the target power supply path. In this way, when the battery power is less than a preset threshold, the target power supply path with high conversion efficiency is awakened, and the target power supply path is used to power the power consumption equipment, ensuring that the vehicle can continue to power the power consumption equipment when it is in a dormant state for a long time, and the target power supply path with the highest conversion efficiency is used to ensure that the power supply to the power consumption equipment is sufficient, so that when the vehicle is in a dormant state, the power consumption equipment can also maintain a normal working state for a long time.

[0167] It should be understood that the size of the serial numbers of the steps in the above embodiments 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.

[0168] See also Figure 8 , which shows a schematic diagram of the structure of a device for supplying power to an electrical device provided by the present application, and includes various units for executing various steps in the above embodiments, see Figure 8 , the device for supplying power to the electrical equipment comprises:

[0169] A first acquisition unit 801 is used to acquire the battery power of the vehicle when the vehicle is in a dormant state;

[0170] A second acquisition unit 802 is used to acquire conversion efficiencies of multiple power supply paths of the vehicle when the battery power is less than a preset power;

[0171] A determining unit 803, configured to determine a target power supply path with the highest conversion efficiency from the multiple power supply paths based on the conversion efficiencies of the multiple power supply paths;

[0172] The awakening unit 804 is used to awaken the target power supply path to supply power to the electrical equipment of the vehicle.

[0173] In some embodiments, the second acquisition unit 802 is used to acquire a first conversion efficiency of a power supply path corresponding to the power generation system of the vehicle and a second conversion efficiency of a power supply path corresponding to the power battery;

[0174] Accordingly, the determination unit 803 is used to determine a target power supply path with the highest conversion efficiency from the power supply path corresponding to the power generation system and the power supply path corresponding to the power battery based on the first conversion efficiency and the second conversion efficiency.

[0175] In some embodiments, the second acquisition unit 802 is used to determine a third conversion efficiency of a power supply path corresponding to the DC converter and a fourth conversion efficiency of a power supply path corresponding to the battery;

[0176] The determining unit 803 is used to determine a target power supply path with the highest conversion efficiency from a power supply path corresponding to the DC converter and a power supply path corresponding to the battery based on the third conversion efficiency and the fourth conversion efficiency.

[0177] In some embodiments, the second acquisition unit 802 is used to obtain the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid power system in the idle state; determine the product of the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid power system as the first conversion efficiency; obtain the battery temperature of the power battery; and determine the second conversion efficiency corresponding to the battery temperature based on the corresponding relationship between temperature and conversion efficiency.

[0178] In some embodiments, the second acquisition unit 802 is used to obtain the correspondence between the speed, torque and engine speed efficiency in the idle state; based on the correspondence between the speed, torque and engine conversion efficiency, with the engine driving torque as the selection condition, the maximum conversion efficiency of the engine is determined from the correspondence between the speed, torque and engine speed efficiency; obtain the correspondence between the speed, torque and reducer conversion efficiency in the idle state; based on the correspondence between the speed, torque and reducer conversion efficiency, with the engine driving torque as the selection condition, the maximum conversion efficiency of the reducer is determined from the correspondence between the speed, torque and reducer conversion efficiency; obtain the correspondence between the speed, torque and hybrid power system conversion efficiency in the idle state; based on the correspondence between the speed, torque and hybrid power system conversion efficiency, with the engine driving torque as the selection condition, the maximum conversion efficiency of the hybrid power system is determined from the correspondence between the speed, torque and hybrid power system conversion efficiency.

[0179] In some embodiments, the apparatus further comprises:

[0180] A detection unit, used to detect the power supply capability of the target power supply path before waking up the target power supply path to supply power to the power-consuming device;

[0181] A wake-up unit 804 is configured to wake up the target power supply path to supply power to the power-consuming device if the power supply capability meets the preset condition corresponding to the target power supply path;

[0182] The determining unit 803 is further configured to determine other power supply paths based on the conversion efficiencies of the multiple power supply paths if the power supply capacity does not meet a preset condition corresponding to the target power supply path.

[0183] In some embodiments, the apparatus further comprises:

[0184] A control unit, configured to stop detecting the battery power if there is no power supply path satisfying the corresponding preset condition among the multiple power supply paths provided by the vehicle;

[0185] The output unit is used to output a prompt message, where the prompt message is used to prompt the user that the remaining energy of the vehicle is insufficient.

[0186] In some embodiments, the apparatus further comprises:

[0187] A starting unit, used for starting the timing when the battery power is greater than or equal to the preset power;

[0188] The first acquisition unit 801 is also used to continue executing the step of acquiring the battery power of the vehicle when the timing duration reaches a preset duration.

[0189] In the embodiment of the present application, when the vehicle is in a dormant state, the battery power of the vehicle is detected. When it is detected that the battery power is less than a preset power, the conversion efficiency of multiple power supply paths of the vehicle is obtained, and the target power supply path with the highest conversion efficiency is selected based on the conversion efficiency of the multiple power supply paths, and the power consumption equipment of the vehicle is powered by the target power supply path. In this way, when the battery power is less than a preset threshold, the target power supply path with high conversion efficiency is awakened, and the target power supply path is used to power the power consumption equipment, ensuring that the vehicle can continue to power the power consumption equipment when it is in a dormant state for a long time, and the target power supply path with the highest conversion efficiency is used to ensure that the power supply to the power consumption equipment is sufficient, so that when the vehicle is in a dormant state, the power consumption equipment can also maintain a normal working state for a long time.

[0190] Fig. 9 FIG. 1 is a schematic diagram of a vehicle provided by an exemplary embodiment of the present application. Fig. 9 As shown, the vehicle 9 of this embodiment includes: a processor 90, a memory 91, and a computer program 92 stored in the memory 91 and executable on the processor 90, such as a program for supplying power to an electric device. When the processor 90 executes the computer program 92, the steps in the above-mentioned method embodiments for supplying power to an electric device are implemented, such as Figure 2 Alternatively, when the processor 90 executes the computer program 92, the functions of each unit in the above-mentioned device embodiments are realized, for example Figure 6 The functions of units 601 to 603 are shown.

[0191] Exemplarily, the computer program 92 may be divided into one or more units, which are stored in the memory 91 and executed by the processor 90 to complete the present application. The one or more units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 92 in the vehicle 9. For example, the computer program 92 may be divided into a first acquisition unit, a second acquisition unit, a determination unit, and a wake-up unit, and the specific functions of each module are as follows:

[0192] A first acquisition unit 801 is used to acquire the battery power of the vehicle when the vehicle is in a dormant state;

[0193] A second acquisition unit 802 is used to acquire conversion efficiencies of multiple power supply paths of the vehicle when the battery power is less than a preset power;

[0194] A determining unit 803, configured to determine a target power supply path with the highest conversion efficiency from the multiple power supply paths based on the conversion efficiencies of the multiple power supply paths;

[0195] The awakening unit 804 is used to awaken the target power supply path to supply power to the electrical equipment of the vehicle.

[0196] The vehicle 9 may be any vehicle having a control function. The vehicle 9 may include, but is not limited to, a processor 90 and a memory 91. Those skilled in the art will appreciate that Fig. 9 It is only an example of the vehicle 9 and does not constitute a limitation of the vehicle 9. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the vehicle 9 may also include input and output devices, network access devices, buses, etc.

[0197] The processor 90 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0198] The memory 91 may be an internal storage unit of the vehicle 9, such as a hard disk or memory of the vehicle 9. The memory 91 may also be an external storage device of the vehicle 9, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the vehicle 9. Further, the memory 91 may also include both an internal storage unit of the vehicle 9 and an external storage device. The memory 91 is used to store the computer program and other programs and data required by the terminal device. The memory 91 may also be used to temporarily store data that has been output or is to be output.

[0199] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0200] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0201] 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 herein 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.

[0202] In the embodiments provided in the present application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are only schematic. For example, the division of the modules or 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.

[0203] 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.

[0204] 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. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0205] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0206] The embodiments of the present application further provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0207] The embodiment of the present application also provides a computer program product. When the computer program product runs on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0208] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for supplying power to an electrical device, characterized in that: The method comprises: When the vehicle is in a dormant state, obtaining the battery power of the vehicle; When the battery power is less than a preset power, obtaining conversion efficiencies of multiple power supply paths of the vehicle; Based on the conversion efficiencies of the multiple power supply paths, determining a target power supply path with the highest conversion efficiency from the multiple power supply paths; The target power supply path is awakened to supply power to the electrical equipment of the vehicle.

2. The method according to claim 1, characterized in that The obtaining conversion efficiencies of the plurality of power supply paths of the vehicle includes: Acquire a first conversion efficiency of a power supply path corresponding to a power generation system of the vehicle and a second conversion efficiency of a power supply path corresponding to a power battery; Accordingly, the determining, based on the conversion efficiencies of the multiple power supply paths, a target power supply path with the highest conversion efficiency from the multiple power supply paths includes: Based on the first conversion efficiency and the second conversion efficiency, a target power supply path with the highest conversion efficiency is determined from the power supply path corresponding to the power generation system and the power supply path corresponding to the power battery.

3. The method according to claim 1 or 2, characterized in that The obtaining conversion efficiencies of a plurality of power supply paths of the vehicle includes: Determining a third conversion efficiency of a power supply path corresponding to the DC converter and a fourth conversion efficiency of a power supply path corresponding to the battery; The determining, based on the conversion efficiencies of the multiple power supply paths, a target power supply path with the highest conversion efficiency from the multiple power supply paths comprises: Based on the third conversion efficiency and the fourth conversion efficiency, a target power supply path with the highest conversion efficiency is determined from the power supply path corresponding to the DC converter and the power supply path corresponding to the battery.

4. The method according to claim 2, characterized in that The obtaining of a first conversion efficiency of a power supply path corresponding to the power generation system of the vehicle and a second conversion efficiency of a power supply path corresponding to the power battery includes: Obtain the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid system at idle state; determining the product of the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid power system as the first conversion efficiency; Get the battery temperature of the power battery; Based on the corresponding relationship between temperature and conversion efficiency, a second conversion efficiency corresponding to the battery temperature is determined.

5. The method according to claim 4, characterized in that The obtaining of the maximum conversion efficiency of the engine, the maximum conversion efficiency of the reducer and the maximum conversion efficiency of the hybrid power system in an idle state includes: Obtain the corresponding relationship between the speed, torque and engine speed efficiency in the idle state; Based on the correspondence between the rotational speed, torque and engine conversion efficiency, the maximum conversion efficiency of the engine is determined from the correspondence between the rotational speed, torque and engine speed efficiency, with satisfying the engine driving torque as a selection condition; Obtain the corresponding relationship between the speed, torque and reducer conversion efficiency under idle state; Based on the correspondence between the rotation speed, torque and the conversion efficiency of the reducer, the maximum conversion efficiency of the reducer is determined from the correspondence between the rotation speed, torque and the conversion efficiency of the reducer, with satisfying the engine driving torque as a selection condition; Obtain the corresponding relationship between the speed, torque and conversion efficiency of the hybrid system under idle state; Based on the correspondence between the rotational speed, torque and hybrid power system conversion efficiency, the maximum conversion efficiency of the hybrid power system is determined from the correspondence between the rotational speed, torque and hybrid power system conversion efficiency, with satisfying the engine driving torque as a selection condition.

6. The method according to claim 1, characterized in that The method further comprises: Before waking up the target power supply path to supply power to the power-consuming device, detecting the power supply capability of the target power supply path; If the power supply capability meets the preset condition corresponding to the target power supply path, waking up the target power supply path to supply power to the power-consuming device; If the power supply capability does not meet the preset condition corresponding to the target power supply path, other power supply paths are determined based on the conversion efficiency of the multiple power supply paths.

7. The method according to claim 6, characterized in that The method further comprises: If there is no power supply path that meets the corresponding preset conditions among the multiple power supply paths provided by the vehicle, stop detecting the battery power; Output a prompt message, wherein the prompt message is used to prompt the user that the remaining energy of the vehicle is insufficient.

8. The method according to claim 1, characterized in that The method further comprises: When the battery power is greater than or equal to the preset power, start timing; When the timing duration reaches the preset duration, the step of obtaining the battery power of the vehicle is continued.

9. A vehicle, characterized in that: The vehicle includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for supplying power to an electric device according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for supplying power to an electrical device according to any one of claims 1 to 8 is implemented.

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