Power distribution method, device and electric vehicle

Abstract

An embodiment of the present invention provides a power distribution method, device and electric vehicle, the method comprising: receiving power requests sent by multiple power-consuming devices, the power requests including initial request power, which is the power value currently actually requested by the corresponding device; determining the final request power corresponding to the multiple power-consuming devices based on the execution power deviation values and initial request power corresponding to the multiple power-consuming devices, the execution power deviation value is used to measure the deviation between the actual request power and the actual execution power of the corresponding power-consuming device in history; determining the distribution power corresponding to the multiple power-consuming devices based on the power that the power supply system can currently provide and the final request power corresponding to the multiple power-consuming devices. In the process of power distribution, the execution power deviation of each power-consuming device during the execution process is taken into account, and a portion of power is reserved, thereby avoiding the problem of unreasonable power distribution for multiple power-consuming devices.

Description

Technical Field

[0001] The present invention relates to the field of electronic computing, and in particular to a power distribution method, device and electric vehicle. Background Art

[0002] Power allocation problems are encountered in many application scenarios. For example, when an electric vehicle is used, the air-conditioning compressor will issue a power request when there is a cooling demand; the heating device will issue a power request when there is a heating demand, and power allocation is performed based on these requests.

[0003] In traditional solutions, power requests from individual devices are allocated based on the power supply system's available power. If the system's available power is greater than or equal to the sum of the power requests from each device, power is allocated based on the power requested by each device. If the system's available power is less than the sum of the power requests from each device, power is allocated to each device in order of priority.

[0004] Since the power supply system allocates power to each power-consuming device according to the requested power, when the actual requested power of the power-consuming device is greater than the actual executed power, it may cause problems such as unreasonable power allocation. Summary of the Invention

[0005] The embodiments of the present invention provide a method, apparatus and device for power distribution, which can realize reasonable power distribution for multiple electrical devices during the power distribution process.

[0006] In a first aspect, an embodiment of the present invention provides a power allocation method, the method comprising:

[0007] Receiving power requests respectively sent by a plurality of electric devices, wherein the power requests include an initial requested power, and the initial requested power is a power value actually currently requested by the corresponding device;

[0008] Determining the final requested power corresponding to each of the multiple electrical devices according to the execution power deviation values corresponding to each of the multiple electrical devices and the initial requested power, wherein the execution power deviation value is used to measure the deviation between the actual requested power and the actual execution power of the corresponding electrical device;

[0009] The allocated power corresponding to each of the plurality of electric devices is determined according to the power that the power supply system can currently provide and the final requested power corresponding to each of the plurality of electric devices.

[0010] In a second aspect, an embodiment of the present invention provides a power distribution device, the device comprising:

[0011] A receiving module, configured to receive power requests respectively sent by a plurality of electrical devices, wherein the power requests include an initial requested power, which is the power value actually currently requested by the corresponding device;

[0012] a first determining module, configured to determine a final requested power corresponding to each of the plurality of electrical devices based on the execution power deviation values corresponding to each of the plurality of electrical devices and the initial requested power, wherein the execution power deviation value is used to measure a deviation between an actual requested power and an actual execution power of the corresponding electrical device;

[0013] The second determining module is configured to determine the allocated power corresponding to each of the plurality of electrical devices according to the power that the power supply system can currently provide and the final requested power corresponding to each of the plurality of electrical devices.

[0014] In a third aspect, an embodiment of the present invention provides an electric vehicle, comprising: a controller, a plurality of electrical devices, and a power supply system, the power supply system including a battery; wherein the controller is used to execute the power distribution method of the first aspect above.

[0015] In the solution provided by the embodiment of the present invention, the initial request power sent by each of the multiple power-consuming devices is first received, and then, based on the initial request power sent by each of the multiple power-consuming devices, the execution power deviation value corresponding to each of the multiple power-consuming devices is added to obtain the final request power corresponding to each of the multiple power-consuming devices. Finally, the allocated power corresponding to each of the multiple power-consuming devices is determined based on the power that the power supply system can currently provide and the final request power corresponding to each of the multiple power-consuming devices. Among them, the execution deviation value is used to measure the deviation between the initial request power and the actual execution power of the power consumer. In the process of power allocation, the execution power deviation of each power consumer during the execution process is taken into account, and the execution power deviation value is added to the final request power, which is equivalent to reserving an extra part. In this way, even if the actual execution power of each power consumer is greater than its initial request power, because a part of the space has been reserved, the problem of unreasonable allocation of power to multiple power consumers during the power allocation process can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of a power distribution execution scenario provided by an embodiment of the present invention;

[0018] Figure 2A flow chart of a power allocation method provided in an embodiment of the present invention;

[0019] Figure 3 A flow chart of another power allocation method provided by an embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of a power distribution device provided in an embodiment of the present invention;

[0021] Figure 5 A schematic structural diagram of an electric vehicle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] In addition, the step sequence in the following method embodiments is only an example and not a strict limitation.

[0024] Power allocation issues arise in many application scenarios. When a power-consuming device requests power, the power supply system typically allocates power based on the requested power. This can lead to battery overcharging or overdischarging. Overcharging occurs when the charging power of a battery in the power supply system exceeds the battery's maximum allowable charging power; overdischarging occurs when the discharging power of a battery in the power supply system exceeds the battery's maximum allowable discharge power. To prevent this, a solution is provided in the embodiments of the present invention.

[0025] For ease of understanding, let's take the application scenario of power distribution in electric vehicles as an example. Figure 1 Exemplary description. Figure 1In the electric vehicle, there are devices such as air-conditioning compressors and heating devices, which are powered by the power supply system, which includes batteries and range extenders. Furthermore, the power supply system in the electric vehicle can manage and control the power distribution to devices such as air-conditioning compressors and heating devices. When the air-conditioning compressor sends a power request to the power supply system, assuming the air-conditioning compressor's requested power is 10 kW and the power supply system's current maximum allowable battery power is 10 kW, then the power that can be allocated to the air-conditioning compressor is 10 kW. However, the air-conditioning compressor ultimately uses 11 kW, which is equivalent to using 1 kW more than the air-conditioning compressor consumes. At this point, the total battery discharge power is 11 kW. The battery discharge power exceeds the maximum allowable battery discharge power, which is equivalent to the battery being over-discharged by 1 kW, resulting in over-discharge. In summary, when the battery discharge power exceeds the maximum allowable battery discharge power, battery over-discharge occurs. Similarly, when the air conditioning compressor sends a power request to the power supply system, assuming the requested power of the air conditioning compressor is 10kW, but the current maximum chargeable power and maximum dischargeable power of the battery are both 0kW, the range extender is used to provide power to the air conditioning compressor. Since the air conditioning compressor's requested power is 10kW, the range extender allocates 10kW to the air conditioning compressor. However, the air conditioning compressor ultimately only executes 9kW. The extra 1kW of power allocated by the range extender will be used to charge the battery. Since the battery's chargeable power is 0kW at this time, it will cause the battery to overcharge. In other words, when the battery's charging power exceeds the battery's maximum allowable charging power, battery overcharge occurs.

[0026] Figure 2 A flow chart of a power distribution method provided by an embodiment of the present invention is as follows: Figure 2 As shown, the method may include the following steps:

[0027] 201. Receive power requests respectively sent by a plurality of electric devices, where the power requests include initial requested power, and the initial requested power refers to a requested power value sent by the electric device to the power supply system.

[0028] 202. Determine the final requested power corresponding to each of the plurality of electrical devices based on the execution power deviation values and initial requested powers corresponding to the plurality of electrical devices. The execution power deviation values are used to measure the deviation between the actual requested power and the actual execution power of the corresponding electrical devices.

[0029] 203. Determine the allocated power corresponding to each of the plurality of electrical devices according to the power that the power supply system can currently provide and the final requested power corresponding to each of the plurality of electrical devices.

[0030] In embodiments of the present invention, the multiple electrical devices in different application scenarios may be different. For example, the multiple electrical devices in an electric vehicle may be any device that requires external power supply, such as an air-conditioning compressor and a heating device. In a moving car, the multiple electrical devices may be electronic devices such as audio equipment. The purpose of properly allocating power to multiple electrical devices may be, for example, to avoid damage to the power supply system caused by overcharging or over-discharging of the battery.

[0031] When multiple electrical devices have power demands, they first send an initial power request to the power supply system. Then, the power supply system determines the power that can be ultimately allocated to each electrical device based on the initial power requests and execution power deviation values corresponding to each of the multiple electrical devices, as well as the power that the power supply system can currently provide.

[0032] In this embodiment of the present invention, the final power allocation for multiple electrical devices is not based directly on the initial power requests of each device. Instead, the final power requests of each device are used as the basis for final power allocation. Using the final power requests as the basis for final power allocation is equivalent to taking into account the power deviations among multiple devices when making power allocations. The power deviation value is used to measure the deviation between the actual power requests and the actual power delivered by the corresponding electrical device.

[0033] Specifically, when multiple electrical devices have power demands, they will send power requests to the power supply system. The power requests initially sent by multiple electrical devices to the power supply system are called initial requested power. After receiving the request, the power supply system first determines the final requested power corresponding to each of the multiple electrical devices based on the initial requested power and execution power deviation value corresponding to each of the multiple electrical devices, and then determines the allocated power corresponding to each of the multiple electrical devices based on the final requested power corresponding to each of the multiple electrical devices and the power that the power supply system can currently provide.

[0034] The execution power deviation refers to the deviation between the actual execution power and the actual requested power of the electrical equipment during the execution process. The execution power deviation cannot be completely avoided during the execution process and can only be made as accurate as possible.

[0035] In an embodiment of the present invention, in the process of determining the execution power deviation corresponding to each of a plurality of electrical devices, the actual requested power and the actual execution power corresponding to each of the plurality of electrical devices within a set historical time period can be first obtained; then, based on the actual requested power and the actual execution power corresponding to each of the plurality of electrical devices, the execution power deviation value corresponding to each of the plurality of electrical devices can be determined.

[0036] In practical applications, the execution power deviation values corresponding to each electrical device are generally determined in advance based on an analysis of the actual requested power and actual executed power data for each electrical device within a specified historical period. The historical period can be a period of time in the past, such as one month, two months, or six months, without specific limitation. Data on the actual requested power and actual executed power of multiple electrical devices operating over a specified period of time is collected, along with information on the operating environments of the multiple electrical devices. Based on the multiple sets of data collected from the multiple electrical devices regarding actual requested power and actual executed power, the deviation trends between the actual requested power and actual executed power for each of the multiple electrical devices are analyzed to determine the execution power deviation values corresponding to each of the multiple electrical devices. The determined execution power deviation value is a value greater than or equal to 0. When the actual requested power of an electrical device is consistently higher than the actual executed power, the execution power deviation value is 0. For ease of understanding, using the example of an air-conditioning compressor in an electric vehicle, the collected data indicates that the actual requested power value of the air-conditioning compressor may have been consistently higher than the actual executed power value within a specified historical period. In this case, the execution power deviation value of the air-conditioning compressor can be determined to be 0.

[0037] That is to say, when an electrical device sends a power request, the execution power deviation value of the electrical device is a determined value. After the power supply system receives the initial request power sent by multiple electrical devices, it determines the final request power corresponding to each of the multiple electrical devices based on the execution power deviation value and the initial request power corresponding to each of the multiple electrical devices. Among them, the method for determining the final request power of multiple electrical devices can optionally be that, on the basis of the initial request power corresponding to each of the multiple electrical devices, the execution power deviation value corresponding to each of the multiple electrical devices is added to obtain the final request power corresponding to each of the multiple electrical devices. Since the final request power is greater than the initial request power, it is equivalent to reserving a portion of power, which can prevent the battery from being over-discharged during operation.

[0038] Next, the allocated power corresponding to each of the plurality of electrical devices is determined according to the obtained final requested power corresponding to each of the plurality of electrical devices and the power currently available from the power supply system.

[0039] In summary, the process of determining the allocated power corresponding to each of multiple electrical devices can be: based on whether the battery in the current power supply system is in a charging state, the maximum allowable charging power of the battery and the final requested power of multiple electrical devices, determine the power that can be allocated to each electrical device.

[0040] During operation, the battery in the power supply system can be in two states: charging state or uncharging state. The system determines the power that can be allocated to each power-consuming device by judging whether the battery in the current power supply system is in a charging state, the maximum allowable charging power of the battery, and the final requested power of multiple power-consuming devices. Specifically, it can be implemented as follows:

[0041] When the battery is in an uncharged state, the allocated power corresponding to each of the multiple power consumers can be determined directly based on the power that the power supply system can currently provide and the final requested power corresponding to each of the multiple power consumers. However, when the battery is in a charging state, the situation becomes more complicated because the maximum charging power of the battery will also affect whether power can be allocated to each power consumer. Therefore, when the battery is in a charging state, it is also necessary to determine the relationship between the maximum allowable charging power of the battery and the execution power deviation values of the multiple power consumers. Specifically, when the battery is in a charging state, and the maximum allowable charging power of the battery is greater than the sum of the execution power deviation values of the multiple power consumers, the allocated power corresponding to each of the multiple power consumers is determined based on the power that the power supply system can currently provide and the final requested power corresponding to each of the multiple power consumers. When the battery is in a charging state, and the maximum allowable charging power of the battery is less than the sum of the execution power deviation values of the multiple power consumers, the use of the multiple power consumers is prohibited.

[0042] In practical applications, the battery's charging status is considered a prerequisite for power allocation to multiple power-consuming devices. This effectively prevents overcharging when the battery is charging, and overdischarging when the battery is not charging. In practical applications, overcharging when the battery is charging is primarily caused by the current charging power exceeding the battery's maximum allowable charging power. Therefore, when allocating power to multiple power-consuming devices while the battery is charging, not only must the battery's charging or uncharging status be considered, but also its maximum allowable charging power.

[0043] For example, assuming that the battery in the current power supply system is in an uncharged state, the allocated power corresponding to each of the multiple power consumers is determined based on the power that the power supply system can currently provide and the final requested power corresponding to each of the multiple power consumers. This can be specifically implemented as follows: first, determine the relationship between the power that the power supply system can currently provide and the total final requested power of the multiple power consumers, and then determine the power that can be allocated to each of the multiple power consumers based on the judgment result. If the power that the current power supply system can provide is greater than the total final requested power of the multiple power consumers, then the initial requested power of each of the multiple power consumers is the allocated power of the multiple power consumers. If the power that the current power supply system can provide is less than the total final requested power of the multiple power consumers, then power is allocated to the multiple power consumers based on the priority of the multiple power consumers and the initial requested power, final requested power and execution power deviation value of each of the multiple power consumers.

[0044] When the battery is in an uncharged state and the current power supply system can provide sufficient power, the final allocated power is the initial requested power of the power-consuming device. Since the final requested power is based on the initial requested power plus the execution power deviation value, it is equivalent to reserving a portion of power in advance. In this way, even if the actual execution power of the power-consuming device exceeds the initial requested power during operation, the battery will not be over-discharged due to the power-consuming device using more power.

[0045] However, in actual applications, the battery in the power supply system may also be in a charging state. When the battery in the power supply system is in a charging state, and the maximum allowable charging power of the battery is less than the sum of the execution power deviation values of multiple power consumers, the use of multiple power consumers is prohibited. However, when the battery is in a charging state and the maximum allowable charging power of the battery is greater than the sum of the execution power deviation values of multiple power consumers, and the power that the power supply system can currently provide is greater than the total final requested power of multiple power consumers, the initial requested power of each of the multiple power consumers is used to allocate power to the multiple power consumers. If the power that the power supply system can currently provide is less than the total final requested power of multiple power consumers, power is allocated to the multiple power consumers based on the priority of the multiple power consumers and the initial requested power, final requested power and execution power deviation value of each of the multiple power consumers.

[0046] Assume that when multiple power consumers request power, they are being supplied by other power consumers in the current power supply system. If the actual power consumption of these devices is less than the allocated initial power request, the other power consumers will use this excess power to charge the battery. If the battery's maximum allowable charging power is less than the sum of the power deviations of these multiple devices, further charging will result in overcharging. Therefore, when the battery is charging and its maximum allowable charging power is less than the sum of the power deviations of these multiple devices, the use of these multiple devices must be prohibited to effectively prevent overcharging.

[0047] In summary, when allocating power to multiple electrical devices, the power deviation of each electrical device during operation is taken into consideration, and an execution power deviation value is reserved, thereby avoiding the occurrence of battery overcharging and over-discharging caused by the execution power deviation of multiple electrical devices.

[0048] In practical applications, many application fields involve the problem of power distribution to multiple electrical devices, and the technical solutions of the embodiments of the present invention can be used in all of them. The following is an exemplary description with reference to several embodiments.

[0049] In the above embodiment, during the power distribution process for multiple power-consuming devices, assuming that the battery is in an uncharged state, or the battery is in a charged state and the maximum allowable charging power of the battery is greater than the sum of the execution power deviation values of multiple power-consuming devices, power distribution can be performed on multiple power-consuming devices. However, the priority of multiple power-consuming devices will also affect the power distribution of multiple power-consuming devices. For this situation, the following can be combined Figure 3 The power distribution method shown is used for exemplary description.

[0050] Figure 3 A flowchart of another power distribution method provided by an embodiment of the present invention, wherein the plurality of electrical devices include a first electrical device and a second electrical device, and the priority of the first electrical device is higher than that of the second electrical device, such as Figure 3 As shown, the method includes the following steps:

[0051] 301. Receive initial power requests respectively sent by a first powered device and a second powered device.

[0052] 302. Determine final requested powers corresponding to the first electric device and the second electric device.

[0053] 303. Determine whether the battery in the power supply system is in a charging state. If so, execute step 304; if not, execute step 306.

[0054] 304 . Determine whether the maximum allowable charging power of the battery is less than the sum of the execution power deviation values of the multiple electrical devices. If so, execute step 305 ; otherwise, execute step 306 .

[0055] 305. The use of multiple electrical devices is prohibited.

[0056] 306 . Determine whether the power currently provided by the power supply system is greater than the total final power requested by the multiple power-consuming devices. If so, execute step 307 ; otherwise, execute step 308 .

[0057] 307 : Determine initial requested powers of the plurality of electrical devices and allocate power to the plurality of electrical devices.

[0058] 308 . Allocate power to the multiple powered devices according to their priorities and their respective initial requested powers, final requested powers, and execution power deviation values.

[0059] Specifically, allocating power to the multiple power-consuming devices according to their priorities and their respective initial power requests can be implemented as follows:

[0060] Determine the relationship between the power that the power supply system can currently provide and the final requested power of the first power consumer. If the power that the power supply system can currently provide is greater than the final requested power of the first power consumer, determine the allocated power of the first power consumer as the initial requested power of the first power consumer, then determine the difference between the power that the power supply system can currently provide and the final requested power of the first power consumer and the execution power deviation value of the second power consumer, and then determine the allocated power of the second power consumer as the difference; if the power that the power supply system can currently provide is less than the final requested power of the first power consumer, determine the difference between the power that the power supply system can currently provide and the execution power deviation value of the first power consumer, then determine the allocated power of the first power consumer as the difference, and at the same time determine that the allocated power of the second power consumer is zero.

[0061] For the relevant contents not described in detail in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0062] For ease of understanding, an application scenario is used to exemplify the allocation process when multiple electrical devices have different priorities.

[0063] Assume that multiple electrical devices include an air conditioner compressor and a heater, and that the air conditioner compressor's power allocation takes precedence over the heater's. When both the air conditioner compressor and the heater each request power, they each send an initial power request to the power supply system. After receiving the initial power requests from the air conditioner compressor and the heater, the power supply system adds their respective execution power deviations to the initial power requests to determine the final power requests for the air conditioner compressor and the heater. Before performing power allocation, the power supply system first determines the current battery status. If the battery is charging and its maximum allowable charging power is less than the sum of the execution power deviations for the multiple electrical devices, the air conditioner compressor and the heater are prohibited from use. If the battery is uncharged, or if it is charging but its maximum allowable charging power is greater than the sum of the execution power deviations for the air conditioner compressor and the heater, the power supply system then determines the relationship between the current available power of the power supply system and the total final power request of the air conditioner compressor and the heater. If the current available power of the power supply system is greater than the total final power request of the air conditioner compressor and the heater, power is allocated to the air conditioner compressor based on the initial power request of the air conditioner compressor, and to the heater based on the initial power request of the heater. If the power currently available from the power supply system is less than the total final power requested by the air conditioner compressor and the heating device, the relationship between the power currently available from the power supply system and the final power requested by the air conditioner compressor is then determined. If the power currently available from the power supply system is greater than the final power requested by the air conditioner compressor, the allocated power of the air conditioner compressor is determined to be the initial power requested by the air conditioner compressor. The difference between the power currently available from the power supply system, the final power requested by the air conditioner compressor, and the executed power deviation value of the heating device is determined, and the allocated power of the heating device is finally determined based on the difference. Optionally, a specific method for determining the allocated power of the heating device based on the difference may include: determining the allocated power of the heating device as max(0, power currently available from the power supply system - final power requested by the air conditioner compressor - executed power deviation value of the heating device) based on the difference between the power currently available from the power supply system - final power requested by the air conditioner compressor - executed power deviation value of the heating device; if the power currently available from the power supply system is less than the final power requested by the air conditioner compressor, heating is disabled, and the allocated power of the air conditioner compressor is max(0, power currently available from the power supply system - executed power deviation value of the air conditioner compressor). Where max(A, B) represents the maximum value of A and B.

[0064] That is, when the difference between the power currently available from the power supply system and the final requested power of the air-conditioning compressor and the deviation value of the heating device's executed power is less than 0, the heating device is disabled. If the difference is greater than 0, power is allocated based on the difference. When the difference between the power currently available from the power supply system and the deviation value of the air-conditioning compressor's executed power is less than 0, the air-conditioning compressor is disabled. If the difference is greater than 0, power is allocated to the air-conditioning compressor based on the difference.

[0065] The power distribution device of one or more embodiments of the present invention will be described in detail below. Those skilled in the art will appreciate that these devices can be constructed by configuring commercially available hardware components through the steps taught in this solution.

[0066] Figure 4 A schematic diagram of the structure of a power distribution device provided by an embodiment of the present invention is shown in FIG. Figure 4 The device includes: a receiving module 11 , a first determining module 12 , and a second determining module 13 .

[0067] The receiving module 11 is configured to receive power requests respectively sent by a plurality of electrical devices, wherein the power requests include initial requested power, which refers to the requested power value sent by the electrical devices to the power supply system.

[0068] The first determination module 12 is used to determine the final requested power corresponding to each of the multiple electrical devices based on the execution power deviation value corresponding to each of the multiple electrical devices and the initial requested power, and the execution power deviation value is used to measure the deviation between the actual requested power and the actual execution power of the corresponding electrical device.

[0069] The second determining module 13 is configured to determine the allocated power corresponding to each of the plurality of electrical devices according to the power currently provided by the power supply system and the final requested power corresponding to each of the plurality of electrical devices.

[0070] Optionally, the first determination module 12 is specifically used to: obtain the actual requested power and actual execution power corresponding to each electrical device of the vehicle within a set historical time; and determine the execution power deviation value corresponding to each of the multiple electrical devices based on the actual requested power and actual execution power corresponding to each of the multiple electrical devices.

[0071] Optionally, the second determination module 13 is specifically used to: if the battery is in an uncharged state, or the battery is in a charging state but the maximum allowable charging power of the battery is greater than the sum of the execution power deviation values of the multiple electrical devices, then determine the allocated power corresponding to each of the multiple electrical devices based on the power that the power supply system can currently provide and the final requested power corresponding to each of the multiple electrical devices.

[0072] Optionally, the second determining module 13 is specifically configured to: when the battery is in a charging state and the maximum allowable charging power of the battery is less than the sum of the execution power deviation values of the multiple electrical devices, prohibit the use of the multiple electrical devices.

[0073] Optionally, the second determining module 13 is specifically configured to: if the power currently provided by the power supply system is greater than the sum of the final requested powers of the multiple electrical devices, allocate power to the multiple electrical devices according to their respective initial requested powers.

[0074] Optionally, the second determination module 13 is specifically used to: if the power that the power supply system can currently provide is less than the sum of the final requested powers of the multiple power-consuming devices, then power is allocated to the multiple power-consuming devices according to the priorities of the multiple power-consuming devices and the initial requested powers, final requested powers and execution power deviation values of the multiple power-consuming devices.

[0075] Optionally, the second determination module 13 is specifically used to: the multiple electric devices include a first electric device and a second electric device, the priority of the first electric device is higher than that of the second electric device, if the power that the power supply system can currently provide is greater than the final requested power of the first electric device, then determine the allocated power of the first electric device as the initial requested power of the first electric device; determine the difference between the power that the power supply system can currently provide and the final requested power of the first electric device and the execution power deviation value of the second electric device; and determine the allocated power of the second electric device based on the difference.

[0076] Optionally, the second determination module 13 is also used for: the multiple electric devices include a first electric device and a second electric device, the priority of the first electric device is higher than that of the second electric device, if the power that the power supply system can currently provide is less than the final requested power of the first electric device, then determine the difference between the power that the power supply system can currently provide and the execution power deviation value of the first electric device; determine the allocated power of the first electric device based on the difference; and determine that the allocated power of the second electric device is zero.

[0077] Figure 4 The device shown can execute the power allocation method provided in the aforementioned embodiment. The detailed execution process and technical effects can be found in the description of the aforementioned embodiment and will not be repeated here.

[0078] In one possible design, the above Figure 4 The structure of the power distribution device shown can be implemented as an electric vehicle, such as Figure 5As shown, the electric vehicle may include: a controller, multiple devices, and a power supply system, wherein the power supply system includes a battery; wherein the controller may at least implement the power distribution method provided in the aforementioned embodiment.

[0079] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Those skilled in the art can understand and implement the present invention without inventive effort.

[0080] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by adding a necessary general hardware platform, and of course can also be implemented by a combination of hardware and software. Based on this understanding, the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a computer product. The present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A power distribution method, characterized in that: include: Receiving power requests respectively sent by a plurality of electric devices, wherein the power requests include an initial requested power, and the initial requested power is a power value actually currently requested by the corresponding device; Determining the final requested power corresponding to each of the multiple electrical devices according to the execution power deviation values corresponding to each of the multiple electrical devices and the initial requested power, wherein the execution power deviation value is used to measure the deviation between the actual requested power and the actual execution power of the corresponding electrical device in history; The allocated power corresponding to each of the plurality of electric devices is determined according to the power that the power supply system can currently provide and the final requested power corresponding to each of the plurality of electric devices.

2. The method according to claim 1, characterized in that Before determining the final requested powers corresponding to the plurality of electrical devices according to the execution power deviation values corresponding to the plurality of electrical devices and the initial requested powers, the method further includes: Obtain the actual requested power and actual executed power corresponding to each electrical device in the vehicle within a set historical time period; The execution power deviation values corresponding to each of the plurality of electric devices are determined according to the actual requested powers and the actual execution powers corresponding to each of the plurality of electric devices.

3. The method according to claim 1, characterized in that The power supply system includes a battery; and determining the allocated power corresponding to each of the plurality of electrical devices based on the power currently provided by the power supply system and the final requested power corresponding to each of the plurality of electrical devices includes: If the battery is in an uncharged state, or the battery is in a charged state but the maximum allowable charging power of the battery is greater than the sum of the execution power deviation values of the multiple electrical devices, the allocated power corresponding to each of the multiple electrical devices is determined based on the power that the power supply system can currently provide and the final requested power corresponding to each of the multiple electrical devices.

4. The method according to claim 3, characterized in that The method further comprises: If the battery is in a charging state and the maximum allowable charging power of the battery is less than the sum of the execution power deviation values of the multiple electric devices, the use of the multiple electric devices is prohibited.

5. The method according to claim 1, wherein The determining, based on the power currently provided by the power supply system and the final requested power corresponding to each of the plurality of electrical devices, the allocated power corresponding to each of the plurality of electrical devices includes: If the power currently provided by the power supply system is greater than the sum of the final power requests of the multiple powered devices, the initial power requests of the multiple powered devices are used to allocate power to the multiple powered devices.

6. The method according to claim 1, characterized in that The determining, based on the power currently provided by the power supply system and the final requested power corresponding to each of the plurality of electrical devices, the allocated power corresponding to each of the plurality of electrical devices includes: If the power that the power supply system can currently provide is less than the sum of the final requested powers of the multiple power-consuming devices, power is allocated to the multiple power-consuming devices based on the priorities of the multiple power-consuming devices and their respective initial requested powers, final requested powers and execution power deviation values.

7. The method according to claim 6, characterized in that The multiple electric devices include a first electric device and a second electric device, and the priority of the first electric device is higher than that of the second electric device; The allocating power to the plurality of powered devices according to the priorities of the plurality of powered devices and the initial requested power, the final requested power, and the execution power deviation value of each of the plurality of powered devices comprises: If the power currently provided by the power supply system is greater than the final requested power of the first powered device, determining the allocated power of the first powered device to be the initial requested power of the first powered device; Determine a difference between the power currently provided by the power supply system, the final requested power of the first power consumer, and the executed power deviation value of the second power consumer; Determine the allocated power of the second electrical device as the difference.

8. The method according to claim 6, characterized in that The multiple electric devices include a first electric device and a second electric device, and the priority of the first electric device is higher than that of the second electric device; The allocating power to the plurality of powered devices according to the priorities of the plurality of powered devices and the initial requested power, the final requested power, and the execution power deviation value of each of the plurality of powered devices comprises: If the power currently provided by the power supply system is less than the final requested power of the first electrical device, determining a difference between the power currently provided by the power supply system and the executed power deviation value of the first electrical device; determining that the allocated power of the first electrical device is the difference; Determine that the allocated power of the second powered device is zero.

9. A power distribution device, characterized in that: The device comprises: A receiving module, configured to receive initial power requests sent by a plurality of electrical devices, wherein the initial power requests are power values currently actually requested by the corresponding devices; a first determining module, configured to determine a final requested power corresponding to each of the plurality of electrical devices based on an execution power deviation value corresponding to each of the plurality of electrical devices and the initial requested power, wherein the execution power deviation value is used to measure a deviation between a historical actual requested power and an actual execution power of the corresponding electrical device; The second determining module is configured to determine the allocated power corresponding to each of the plurality of electrical devices according to the power that the power supply system can currently provide and the final requested power corresponding to each of the plurality of electrical devices.

10. An electric vehicle, characterized in that: include: A controller, a plurality of electrical devices, and a power supply system, wherein the power supply system includes a battery; wherein the controller is used to execute the power distribution method according to any one of claims 1 to 8.

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