Charging pile power distribution control method, charging pile and charging station

Abstract

The invention provides a charging pile power distribution control method, a charging pile and a charging station, and the method comprises the steps: determining the number of required power modules of a target charging gun based on the charging demand information of the target charging gun and the optimal output power corresponding to a power module; on the basis of the size relation between the number of the required power modules and the number of the alternative power modules of the target charging gun, the charging requirement information and the temperature distribution characteristics of the charging pile, determining operation power modules in the alternative power modules, and determining the target output power of each operation power module; and controlling each operation power module to provide electric energy for the target charging gun according to the corresponding target output power, so that the power output efficiency of each power module can be effectively improved while the charging requirement of the target charging gun can be met to the greatest extent, the consistency of temperature distribution in the charging pile can be improved, and the charging efficiency of the charging pile is improved. The influence of too high temperature on the power output efficiency of the power module is avoided, and the working reliability of the charging pile can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of charging piles, and in particular to a charging pile power distribution control method, a charging pile and a charging station. Background Art

[0002] With the continuous development of new energy technologies, the number of electric vehicles has gradually increased, and the corresponding electric vehicle charging equipment has also developed rapidly. In order to meet the needs of fast charging of electric vehicles, high-power charging piles have become the main development trend of charging equipment.

[0003] Existing charging piles usually adopt modular piles, that is, the power part and the electrical part in the charging pile adopt a distributed layout, and the power part plays the role of power conversion. The power part usually adopts multiple power modules in parallel to improve the power output of the entire charging pile. Therefore, the power output efficiency of each power module has an important impact on the working reliability of the charging pile.

[0004] However, each power module is equivalent to a heat source when it is called. When the power module is called, there will be uneven temperature distribution in the charging pile. The higher temperature has a greater impact on the power output efficiency of each power module. Therefore, it is necessary to provide a power allocation control method that can effectively improve the power output efficiency of each power module to improve the working reliability of the charging pile. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a charging pile power distribution control method, a charging pile and a charging station to solve the problem in the prior art that the power output efficiency of each power module in the charging pile cannot be guaranteed.

[0006] To achieve the above technical objectives, the present application provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present specification provides a charging pile power distribution control method, which is applied to a charging pile including a plurality of power modules, and the method includes:

[0008] Determine the required number of power modules of the target charging gun based on the charging demand information of the target charging gun and the preferred output power corresponding to the power module; the preferred output power includes the output power provided by the power module at the optimal efficiency point;

[0009] Based on the relationship between the number of required power modules and the number of candidate power modules of the target charging gun, as well as the charging demand information and the temperature distribution characteristics of the charging pile, an operating power module is determined from each of the candidate power modules, and a target output power of each of the operating power modules is determined; the temperature distribution characteristics include the expected temperature of each area in the charging pile;

[0010] Each of the operating power modules is controlled to provide electric energy to the target charging gun at the corresponding target output power.

[0011] In one embodiment, the charging requirement information includes required charging power;

[0012] The step of determining an operating power module from each of the candidate power modules based on the relationship between the number of required power modules and the number of candidate power modules of the target charging gun, as well as the charging demand information and the temperature distribution characteristics of the charging pile, and determining a target output power of each of the operating power modules includes:

[0013] If the required number of power modules is less than or equal to the number of candidate power modules, determining the operating power module based on the temperature distribution characteristics of the charging pile, and determining the target output power of each operating power module based on the required charging power and the preferred output power;

[0014] If the required number of power modules is greater than the number of alternative power modules, all of the alternative power modules are determined as operating power modules, and the target output power of each operating power module is determined based on the required charging power and the temperature distribution characteristics of the charging pile.

[0015] In one embodiment, when the number of required power modules is less than or equal to the number of candidate power modules, determining the operating power module based on the temperature distribution characteristics of the charging pile includes:

[0016] Based on the temperature distribution characteristics of the charging pile, M candidate power modules are determined as the operating power modules in order from low to high expected temperatures in the area, where M is the number of required power modules and M is a positive integer.

[0017] In one embodiment, when the number of required power modules is less than or equal to the number of candidate power modules, determining the target output power of each operating power module based on the required charging power and the preferred output power includes:

[0018] Determine the preferred output power as the target output power of M-1 operating power modules, and determine the difference between the required charging power and the target power as the target output power of the remaining operating power module;

[0019] The target power is the sum of the output powers of the M-1 operating power modules output at the corresponding preferred output powers.

[0020] In one embodiment, the remaining one operating power module is determined by the following method:

[0021] Based on the temperature distribution characteristics of the charging pile, an operating power module with the highest expected temperature in the area where the M operating power modules are located is used as the remaining operating power module.

[0022] In one embodiment, when the number of required power modules is greater than the number of candidate power modules, determining the target output power of each operating power module based on the required charging power and the temperature distribution characteristics of the charging pile includes:

[0023] Obtaining the current charging mode of the target charging gun;

[0024] The target output power of each of the operating power modules is determined based on the current charging mode, the required charging power, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module.

[0025] In one embodiment, determining the target output power of each of the operating power modules based on the current charging mode, the required charging power, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module includes:

[0026] When the current charging mode of the target charging gun is the constant voltage mode, based on the required charging power of the target charging gun, the target output power of each operating power module is adjusted from the initial output power to the preferred output power in order from high to low according to the expected temperature of the area where each operating power module is located, wherein the initial output power is determined based on the relationship between a first ratio and the rated output power, and the first ratio is the ratio of the required charging power of the target charging gun at the start of charging to the number of the operating power modules.

[0027] In one implementation, the process of determining the initial output power based on the magnitude relationship between the first ratio and the rated output power includes:

[0028] If the first ratio is greater than or equal to the rated output power, the rated output power is used as the initial output power;

[0029] If the first ratio is smaller than the rated output power, the first ratio is used as the initial output power.

[0030] In one embodiment, determining the target output power of each of the operating power modules based on the current charging mode, the required charging power, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module includes:

[0031] When the current charging mode of the target charging gun is a constant current mode, calculating a ratio of the required charging power to the number of the operating power modules to obtain a second ratio;

[0032] If the second ratio is greater than or equal to the rated output power, the rated output power is used as the target output power of each of the operating power modules;

[0033] If the second ratio is less than the rated output power, the target output power of each operating power module is determined based on the second ratio and the expected temperature of the area where each operating power module is located, and the target output power is negatively correlated with the expected temperature of the area where the operating power module is located.

[0034] In one embodiment, determining the target output power of each of the operating power modules based on the second ratio and the expected temperature of the region where each of the operating power modules is located includes:

[0035] Dividing each of the operating power modules into a plurality of regions, the plurality of regions comprising a first region, a middle region and a second region, wherein an expected temperature of the first region is lower than an expected temperature of the middle region, and an expected temperature of the middle region is lower than an expected temperature of the second region;

[0036] Using the second ratio as the target output power of each of the operating power modules in the middle region;

[0037] For each of the operating power modules in the first area and the second area, based on the second ratio and the rated output power, determine a power correction value corresponding to each of the operating power modules, and use the sum of the second ratio and the power correction value as the target output power of the operating power module;

[0038] The power correction value corresponding to each operating power module in the first area is a positive value, the power correction value corresponding to each operating power module in the second area is a negative value, and the power correction value is negatively correlated with the expected temperature of the area where the operating power module is located.

[0039] In one implementation, the candidate power module of the target charging gun is determined by the following method:

[0040] When the working mode of the charging pile is a single-gun charging mode, all the power modules in the charging pile are used as candidate power modules for the target charging gun;

[0041] When the working mode of the charging pile is a multi-gun charging mode, the power module corresponding to the target charging gun and the idle power modules corresponding to other charging guns are used as alternative power modules of the target charging gun, wherein the other charging guns are charging guns other than the target charging gun.

[0042] In a second aspect, an embodiment of the present specification provides a charging pile, comprising: a controller, a plurality of power modules and at least one charging gun, the controller comprising at least one processor and at least one memory, the memory storing a computer program, and when the computer program is executed by the processor, the power modules are controlled to provide electrical energy to the charging gun based on the charging pile power distribution control method as described in any one of the above items.

[0043] In a third aspect, an embodiment of the present specification provides a charging station, comprising at least one charging pile as described above.

[0044] In a fourth aspect, an embodiment of the present specification provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the charging pile power distribution control method as described in any one of the above items is implemented.

[0045] In a fifth aspect, an embodiment of the present specification provides a computer program product or a computer program, wherein the computer program product includes a computer program, and the computer program is stored in a computer-readable storage medium; the processor of the computer device reads the computer program from the computer-readable storage medium, and when the processor executes the computer program, it implements the charging pile power distribution control method as described in any one of the above items.

[0046] It can be seen from the above technical scheme that the embodiment of the present application provides a charging pile power allocation control method, a charging pile and a charging station, wherein the charging pile power allocation control method determines the number of required power modules of the target charging gun based on the charging demand information of the target charging gun and the preferred output power corresponding to the power module, and determines the operating power module from each alternative power module based on the relationship between the number of required power modules and the number of alternative power modules of the target charging gun, as well as the charging demand information and the temperature distribution characteristics of the charging pile, and determines the target output power of each operating power module, so as to control each operating power module according to the corresponding target output power. The target charging gun provides electrical energy, wherein the preferred output power includes the output power provided by the power module at the optimal efficiency point. Thus, the output power provided by each power module at the optimal efficiency point, the charging demand of the target charging gun and the temperature distribution characteristics of the charging pile can be comprehensively considered, and the power module and the output power of the power module can be allocated to the target charging gun. This can effectively improve the power output efficiency of each power module while meeting the charging demand of the target charging gun to the greatest extent, and can improve the consistency of temperature distribution in the charging pile, thereby avoiding the influence of excessive temperature on the power output efficiency of the power module, and thus effectively improving the working reliability of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0048] Figure 1 A flowchart of a charging pile power distribution control method provided for one embodiment of this specification.

[0049] Figure 2 A schematic diagram of the distribution of power modules in a charging pile is provided for one embodiment of the present specification.

[0050] Figure 3 A schematic diagram of the structure of a charging pile provided for one embodiment of the present specification. DETAILED DESCRIPTION

[0051] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0052] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0053] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0054] Overview

[0055] As described in the background technology, with the continuous development of new energy technologies, the number of electric vehicles has gradually increased, and the corresponding electric vehicle charging equipment has also developed rapidly. In order to meet the fast charging needs of electric vehicles, high-power charging piles have become the main development trend of charging equipment.

[0056] Existing charging piles usually adopt modular piles, that is, the power part and the electrical part in the charging pile adopt a distributed layout, and the power part plays the role of power conversion. The power part usually adopts multiple power modules in parallel to improve the power output of the entire charging pile. Therefore, the power output efficiency of each power module has an important impact on the working reliability of the charging pile.

[0057] However, each power module is equivalent to a heat source when it is called. When the power module is called, there will be uneven temperature distribution in the charging pile. The higher temperature will have a greater impact on the power output efficiency of each power module.

[0058] Therefore, it is necessary to provide a power distribution control method that can effectively improve the power output efficiency of each power module, so as to improve the working reliability of the charging pile.

[0059] In order to solve the problem that the traditional method cannot guarantee the power output efficiency of each power module in the charging pile, in the technical solution of the present application, the number of required power modules of the target charging gun is determined based on the charging demand information of the target charging gun and the preferred output power corresponding to the power module, and based on the size relationship between the number of required power modules and the number of candidate power modules of the target charging gun, as well as the charging demand information and the temperature distribution characteristics of the charging pile, the operating power module is determined among the candidate power modules, and the target output power of each operating power module is determined, so as to control each operating power module to provide electric energy to the target charging gun according to the corresponding target output power, wherein the preferred output power includes the output power provided by the power module at the optimal efficiency point, thereby comprehensively considering multiple factors such as the output power provided by each power module at the optimal efficiency point, the charging demand of the target charging gun and the temperature distribution characteristics of the charging pile, and allocating the power module and the output power of the power module to the target charging gun, so as to meet the charging demand of the target charging gun to the greatest extent while effectively improving the power output efficiency of each power module, and improving the consistency of the temperature distribution in the charging pile, avoiding the influence of excessive temperature on the power output efficiency of the power module, and thus effectively improving the working reliability of the charging pile.

[0060] Based on the above-mentioned inventive concept, the charging pile power distribution control method provided in the implementation manner of this specification is exemplarily described below.

[0061] Exemplary Methods

[0062] The embodiments of this specification provide a charging pile power distribution control method, which is applied to a charging pile including multiple power modules, such as Figure 1 As shown, the method includes:

[0063] S101. Determine the required number of power modules of the target charging gun based on the charging demand information of the target charging gun and the preferred output power corresponding to the power module; the preferred output power includes the output power provided by the power module at the optimal efficiency point.

[0064] Specifically, multiple power modules connected in parallel can be set inside the charging pile. During the operation of the charging pile, each power module can be independently controlled, so that the vehicle connected to the charging gun can be charged flexibly and the different charging requirements of the vehicle can be met.

[0065] The charging pile may include at least one charging gun. When there are multiple charging guns, the multiple charging guns can charge different vehicles at the same time. The target charging gun may be any charging gun that is currently in the starting state in the charging pile. For example, when there are multiple charging guns in the starting state, the target charging gun may be a charging gun that is started before other charging guns in the charging pile, or a charging gun that is started later than other charging guns in the charging pile, or a charging gun that is started at the same time as other charging guns in the charging pile.

[0066] The charging demand information of the target charging gun may include the charging information obtained by the target charging gun from the BMS (Battery Management System) of the connected vehicle. It is understandable that the charging demand information of the target charging gun can also be input through the human-computer interaction interface of the charging pile. Among them, the charging demand information may include the required charging voltage, required charging current, required charging power, etc. of the target charging gun. The charging demand information can change in real time. For example, when the target charging gun is charged in constant voltage mode, the required charging voltage remains unchanged, but as charging proceeds, the required charging current will gradually decrease, and accordingly, the required charging power will also gradually decrease. When the target charging gun is charged in constant current mode, the required charging current remains unchanged, but as charging proceeds, the required charging voltage will gradually increase, and accordingly, the required charging power will also gradually increase.

[0067] It can be understood that the preferred output power can be the output power provided by the power module at the optimal efficiency point. In addition, it can also include an efficiency point whose distance from the optimal efficiency point is less than or equal to a preset distance. In implementation, for any power module, a target correspondence relationship corresponding to the power module can be pre-constructed. The target correspondence relationship can include the correspondence between the input voltage, output voltage, output power and power output efficiency of the power module. The power output efficiency is the efficiency of the power module in converting input electrical energy into output electrical energy. For example, the power output efficiency corresponding to different output powers of the power module under different input voltages and output voltages can be tested by an efficiency testing device to construct a target correspondence relationship, wherein the target correspondence relationship can be a mapping table or a curve graph, etc.

[0068] During the operation of the charging pile, the current input voltage of the power module and the required charging voltage of the target charging gun can be matched with the input voltage and output voltage in the target corresponding relationship respectively, and the preferred output power corresponding to the power module can be determined according to the matching result. In the matching process, if there is an input voltage and output voltage matching the current input voltage and the required charging voltage of the target charging gun in the target corresponding relationship, the output power with the best power output efficiency under the matching input voltage and output voltage can be used as the preferred output power corresponding to the power module. If there is no input voltage and / or output voltage matching the current input voltage and the required charging voltage of the target charging gun in the target corresponding relationship, the output power with the best power output efficiency under the input voltage and output voltage closest to the current input voltage and the required charging voltage of the target charging gun in the target corresponding relationship can be used as the preferred output power corresponding to the power module. That is, in the target corresponding relationship, the smaller the interval between adjacent input voltages, output voltages and output powers, the more accurate the determination result of the preferred output power.

[0069] In implementation, the number of power modules required for the target charging gun can be determined based on the ratio of the required charging power of the target charging gun to the preferred output power. For example, the number of power modules required P q is the required charging power, P b For the optimal output power, Indicates rounding up, that is, when P q / P b When M is an integer, M=P q / P b , when P q / P b When M is a decimal, it is greater than P q / P b The smallest integer.

[0070] S102. Based on the relationship between the number of required power modules and the number of alternative power modules of the target charging gun, as well as the charging demand information and the temperature distribution characteristics of the charging pile, determine the operating power module from each alternative power module, and determine the target output power of each operating power module; the temperature distribution characteristics include the expected temperature of each area in the charging pile.

[0071] Specifically, the alternative power module of the target charging gun may be a power module that can be used to provide electrical energy to the target charging gun during the charging process of the target charging gun, that is, the alternative power module may include at least some of the power modules in the charging pile.

[0072] In implementation, the alternative power modules of the target charging gun can be determined based on the working mode of the charging pile, and the working mode of the charging pile can include a single-gun charging mode and a multi-gun charging mode. For example, when the working mode of the charging pile is a single-gun charging mode, that is, only the target charging gun is in the startup state, all the power modules in the charging pile can be used as alternative power modules for the target charging gun. When the working mode of the charging pile is a multi-gun charging mode, that is, at least two charging guns including the target charging gun are in the startup state at the same time, the alternative power modules can be allocated to each charging gun in the startup state on a first-come-first-served basis; the alternative power modules of the target charging gun can also be determined according to the number of required power modules of each charging gun in the startup state, for example, the number of alternative power modules of the target charging gun can be determined according to the ratio between the number of required power modules of each charging gun in the startup state, and the alternative power modules of the target charging gun can be determined according to the number of alternative power modules of the target charging gun; in addition, the alternative power modules corresponding to each charging gun can also be pre-set.

[0073] The temperature distribution characteristics of the charging pile may include the temperature distribution trend of the expected temperature inside the charging pile when all power modules in the charging pile are operating at the same output power. For example, the power modules in the charging pile may be distributed in a matrix form. When there is no heat dissipation device in the charging pile, the temperature distribution trend inside the charging pile may gradually increase from bottom to top. When a heat dissipation device (such as a heat dissipation fan) is provided in the charging pile, the temperature distribution trend inside the charging pile may be determined according to the position of the heat dissipation device. For example, when the heat dissipation device is provided at the top of the charging pile, the temperature distribution trend inside the charging pile may gradually increase from top to bottom. When the heat dissipation device is provided at the bottom of the charging pile, the temperature distribution trend inside the charging pile may gradually increase from bottom to top.

[0074] The operating power module may include a power module for providing electric energy to a target charging gun. For any operating power module, the target output power of the operating power module is the power required to be output when the operating power module provides electric energy to the target charging gun.

[0075] In implementation, the operating power module can be determined from the target charging gun's candidate power modules based on the size relationship between the number of required power modules of the target charging gun and the number of candidate power modules of the target charging gun, the charging demand information, and the temperature distribution characteristics of the charging pile, and the target output power of each operating power module can be determined. For example, when the number of required power modules of the target charging gun is less than or equal to the number of candidate power modules of the target charging gun, the candidate power module with a lower expected temperature in the area can be selected as the operating power module according to the temperature distribution characteristics of the charging pile. The number of operating power modules can be the number of required power modules. At the same time, the preferred output power can be preferentially used as the target output power of each operating power module, thereby effectively improving the power output efficiency of each power module, and improving the consistency of the internal temperature distribution during the operation of the charging pile, thereby avoiding the influence of higher temperature on the power output efficiency of the power module, and further improving the power output efficiency of each power module. In addition, when the number of required power modules of the target charging gun is greater than the number of alternative power modules of the target charging gun, each alternative power module can be used as an operating power module. At the same time, the target output power of each operating power module can be determined based on the charging demand information and the expected temperature of the area where each operating power module is located. For example, the target output power may be negatively correlated with the temperature corresponding to the corresponding operating power module. This can effectively improve the consistency of the internal temperature distribution during the operation of the charging pile while meeting the charging demand of the target charging gun to the greatest extent, thereby improving the power output efficiency of each power module.

[0076] It is understandable that during the charging process of the target charging gun, the charging demand information of the target charging gun can be obtained in real time, and the operating power module and the target output power of each operating power module can be updated in real time according to the charging demand information.

[0077] S103, controlling each operating power module to provide electric energy to a target charging gun with a corresponding target output power.

[0078] Specifically, each operating power module can be controlled to provide electrical energy to the target charging gun according to the corresponding target output power. Since the operating power module and the target output power of each operating power module are determined by comprehensively considering multiple factors, such as the output power provided by each power module at the optimal efficiency point, the charging requirements of the target charging gun and the temperature distribution characteristics of the charging pile, it is possible to effectively improve the power output efficiency of each power module while meeting the charging requirements of the target charging gun to the greatest extent, and to improve the consistency of temperature distribution in the charging pile, thereby avoiding the influence of excessive temperature on the power output efficiency of the power module, and thereby effectively improving the working reliability of the charging pile.

[0079] In a feasible implementation manner, the charging requirement information includes required charging power;

[0080] Based on the relationship between the number of required power modules and the number of candidate power modules of the target charging gun, as well as the charging demand information and the temperature distribution characteristics of the charging pile, the operating power module is determined from the candidate power modules, and the target output power of each operating power module is determined, including:

[0081] If the required number of power modules is less than or equal to the number of candidate power modules, the operating power module is determined based on the temperature distribution characteristics of the charging pile, and the target output power of each operating power module is determined based on the required charging power and the preferred output power;

[0082] If the required number of power modules is greater than the number of candidate power modules, all candidate power modules are determined as operating power modules, and the target output power of each operating power module is determined based on the required charging power and the temperature distribution characteristics of the charging pile.

[0083] Specifically, when the required number of power modules of the target charging gun is less than or equal to the number of alternative power modules of the target charging gun, that is, the alternative power modules can meet the calling requirements of the target charging gun, the number of operating power modules can be the required number of power modules, wherein the operating power module can be determined based on the temperature distribution characteristics of the charging pile to improve the consistency of the internal temperature distribution during the operation of the charging pile.

[0084] As a preferred implementation, when the number of required power modules is less than or equal to the number of candidate power modules, determining the operating power module based on the temperature distribution characteristics of the charging pile includes:

[0085] Based on the temperature distribution characteristics of the charging pile, M candidate power modules are determined as operating power modules in the order of the expected temperature of the area from low to high, where M is the number of required power modules and M is a positive integer.

[0086] Specifically, the expected temperature of the area where each alternative power module is located can be determined based on the temperature distribution characteristics of the charging pile. For any alternative power module, the expected temperature of the area where the alternative power module is located can be the temperature or temperature level of the alternative power module when all power modules in the charging pile operate at the same output power.

[0087] During implementation, the alternative power modules can be sorted in order from low to high according to the expected temperature of the area where they are located, and the first M alternative power modules are used as operating power modules, where M is the required number of power modules of the target charging gun. This allows the power modules with lower expected temperatures in the area where the alternative power modules of the target charging gun are located to be preferentially used to provide power for the target charging gun, effectively improving the consistency of the internal temperature distribution during the operation of the charging pile, thereby avoiding the impact of higher temperatures on the power output efficiency of the power module.

[0088] For example, refer to Figure 2 The power modules 201 in the charging pile can be distributed in a matrix of m layers and n columns. Figure 2 The power modules 201 are numbered in the order shown. When the temperature distribution trend inside the charging pile gradually increases from top to bottom, the first M candidate power modules can be used as operating power modules according to the numbers of the candidate power modules, for example, the M power modules numbered 0 to M can be used as operating power modules. When the temperature distribution trend inside the charging pile gradually increases from bottom to top, the last M candidate power modules can be used as operating power modules according to the numbers of the candidate power modules, so that the operating power module can be determined quickly and effectively.

[0089] In addition, when the required number of power modules is less than or equal to the number of alternative power modules, the target output power of each operating power module can also be determined based on the required charging power of the target charging gun and the preferred output power of each operating power module. For example, on the premise of meeting the required charging power of the target charging gun, the preferred output power can be prioritized as the target output power of each operating power module, thereby effectively improving the power output efficiency of each power module while ensuring the charging requirements of the target charging gun.

[0090] As a preferred implementation, when the number of required power modules is less than or equal to the number of candidate power modules, the target output power of each operating power module is determined based on the required charging power and the preferred output power, including:

[0091] Determine the preferred output power as the target output power of M-1 operating power modules, and determine the difference between the required charging power and the target power as the target output power of the remaining operating power module;

[0092] The target power is the sum of the output powers of M-1 operating power modules output at the corresponding preferred output powers.

[0093] Specifically, when the number of required power modules of the target charging gun is less than or equal to the number of alternative power modules, M-1 operating power modules can be selected from the M operating power modules, and the preferred output power corresponding to the M-1 operating power modules is used as the target output power of the M-1 operating power modules. It is understandable that the preferred output powers of different power modules in the charging pile can be the same or different, and can be set according to actual needs.

[0094] The remaining operating power module is an operating power module other than the M-1 operating power modules among the M operating power modules. In implementation, the sum of the output powers output by the M-1 operating power modules at the corresponding preferred output powers can be calculated, and the sum of the output powers can be used as the target power, so that the difference between the required charging power of the target charging gun and the target power can be determined as the target output power of the remaining operating power module, so that the target output power of each operating power module can be determined according to the principle of giving priority to the preferred output power under the premise of meeting the charging demand of the target charging gun, thereby effectively improving the power output efficiency of each power module.

[0095] The remaining operating power module may be any operating power module among the operating power modules, or may be an operating power module with the highest expected temperature in the region where the operating power modules are located, and may be specifically set according to actual needs.

[0096] As a preferred implementation, the remaining operating power module is determined by the following method:

[0097] Based on the temperature distribution characteristics of the charging pile, the operating power module with the highest expected temperature in the area where the M operating power modules are located is taken as the remaining operating power module.

[0098] Specifically, the sorting information of the expected temperature of the area where the M operating power modules are located can be determined based on the temperature distribution characteristics of the charging pile, and according to the sorting information, the operating power module with the highest expected temperature in the area where the M operating power modules are located can be used as the remaining operating power module. It can be understood that when the expected temperatures of the areas where multiple operating power modules are located are the same, and the expected temperature of the area where the M operating power modules are located is the highest, the remaining operating power module can be determined according to the numbers of the operating power modules with the highest expected temperature in the area. For example, the temperatures corresponding to the power modules in the same layer in the charging pile can be the same. When the first M alternative power modules are used as operating power modules according to the numbers of each alternative power module, the operating power module with the largest number can be used as the remaining operating power module. When the last M alternative power modules are used as operating power modules according to the numbers of each alternative power module, the operating power module with the smallest number can be used as the remaining operating power module, thereby further improving the consistency of the internal temperature distribution during the operation of the charging pile.

[0099] At the same time, as charging progresses, the required charging power of the target charging gun will change. When the required charging power of the target charging gun gradually decreases, by updating the operating power module and the target output power of each operating power module in real time, each operating power module can be gradually cut out according to the number of each alternative power module. For example, when the first M alternative power modules are used as operating power modules according to the number of each alternative power module, each operating power module can be gradually cut out in order from large to small. When the last M alternative power modules are used as operating power modules according to the number of each alternative power module, each operating power module can be gradually cut out in order from small to large. This can meet the charging demand of the target charging gun while further improving the consistency of the internal temperature distribution during the operation of the charging pile. It can be understood that when the required charging power of the target charging gun gradually increases, the operating power module and the target output power of each operating power module can be updated in real time based on the charging demand information of the target charging gun and the temperature distribution characteristics of the charging pile.

[0100] In addition, when the number of required power modules of the target charging gun is greater than the number of candidate power modules of the target charging gun, all the candidate power modules can be used as operating power modules. At the same time, the target output power of each operating power module can be determined based on the required charging power of the target charging gun and the expected temperature of the area where each operating power module is located, wherein the target output power can be negatively correlated with the expected temperature of the area where the corresponding operating power module is located. For example, the target output power of a predetermined number of candidate power modules can be determined as the corresponding preferred output power in the order of the expected temperature of the area where each operating power module is located from high to low, and the target output power of the remaining operating power modules can be determined according to the required charging power of the target charging gun. The target output power of the remaining operating power modules can be greater than the preferred output power and less than or equal to the rated output power. In addition, the target output power of each operating power module can be determined in sequence according to the expected temperature of the area in the order of high to low on the basis of the specified output power. The higher the expected temperature of the area, the greater the target output power, until the target output power reaches the rated output power, thereby effectively improving the consistency of the internal temperature distribution during the operation of the charging pile under the premise of ensuring the charging demand of the target charging gun, thereby improving the power output efficiency of each power module.

[0101] As a preferred implementation, when the number of required power modules is greater than the number of alternative power modules, the target output power of each operating power module is determined based on the required charging power and the temperature distribution characteristics of the charging pile, including:

[0102] Get the current charging mode of the target charging gun;

[0103] The target output power of each operating power module is determined based on the current charging mode, required charging power, temperature distribution characteristics of the charging pile and the rated output power of the operating power module.

[0104] Specifically, when the required number of power modules of the target charging gun is greater than the number of alternative power modules of the target charging gun, the current charging mode of the target charging gun can be further obtained. The charging mode of the target charging gun can include a constant voltage mode and a constant current mode. In the constant voltage mode, the charging voltage remains unchanged during the charging process, and the charging current will gradually decrease as the charging progresses. In the constant current mode, the charging current remains unchanged during the charging process, and the charging voltage will gradually increase as the charging progresses.

[0105] During implementation, when the required number of power modules of the target charging gun is greater than the number of alternative power modules of the target charging gun, the target output power of each operating power module can be determined based on the current charging mode of the target charging gun, the required charging power of the target charging gun, the temperature distribution characteristics of the charging pile, and the rated output power of each operating power module.

[0106] For example, when the current charging mode of the target charging gun is the constant voltage mode, as charging proceeds, the required charging power of the target charging gun will gradually decrease. The target output power of each operating power module at the start of charging of the target charging gun can be determined based on the required charging power of the target charging gun, the number of operating power modules, and the rated output power of the operating power modules. It can be understood that the target output power of each operating power module at the start of charging of the target charging gun can be the same or different. As the required charging power of the target charging gun gradually decreases, the target output power of each operating power module can be reduced in sequence according to the expected temperature of the area where each operating power module is located from high to low, so as to effectively improve the consistency of the internal temperature distribution during the operation of the charging pile while meeting the charging needs of the target charging gun to the greatest extent.

[0107] In addition, when the current charging mode of the target charging gun is the constant current mode, as charging proceeds, the required charging voltage of the target charging gun will gradually increase, and the target output power of each operating power module can be updated in real time based on the required charging power of the target charging gun, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module. In each update of the target output power of each operating power module, if the total output power output by each operating power module at the rated output power is still less than or equal to the required charging power of the target charging gun, the rated output power can be used as the target output power of each operating power module; if the total output power output by each operating power module at the rated output power is greater than the required charging power of the target charging gun, the target output power of each operating power module is determined according to the principle that the target output power of the operating power module is negatively correlated with the expected temperature of the area in which it is located, and the sum of the target output powers of each operating power module is equal to the required charging power, thereby effectively improving the consistency of the internal temperature distribution during the operation of the charging pile.

[0108] In a feasible implementation, based on the current charging mode, the required charging power, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module, the target output power of each operating power module is determined, including:

[0109] When the current charging mode of the target charging gun is the constant voltage mode, based on the required charging power of the target charging gun, the target output power of each operating power module is adjusted from the initial output power to the preferred output power in order from high to low according to the expected temperature of the area where each operating power module is located, wherein the initial output power is determined based on the relationship between the first ratio and the rated output power, and the first ratio is the ratio of the required charging power of the target charging gun at the start of charging to the number of operating power modules.

[0110] Specifically, when the current charging mode of the target charging gun is the constant voltage mode, as charging progresses, the required charging power of the target charging gun will gradually decrease. At the start of charging of the target charging gun, the initial output power of each operating power module can be determined based on the relationship between the first ratio and the rated output power of each operating power module, and the initial output power of each operating power module can be used as the target output power of each operating power module. The first ratio can be the ratio of the required charging power of the target charging gun at the start of charging to the number of operating power modules corresponding to the target charging gun.

[0111] As charging proceeds, the required charging power of the target charging gun can be updated in real time, and based on the required charging power of the target charging gun, the target output power of each operating power module can be adjusted in real time based on the initial output power of each operating power module. Among them, as the required charging power of the target charging gun gradually decreases, the target output power of each operating power module can be adjusted from the initial output power to the preferred output power in order from high to low according to the expected temperature of the area where each operating power module is located, based on the temperature distribution characteristics of the charging pile, until the charging of the target charging gun is completed or the target output power of each operating power module is adjusted to the preferred output power, thereby effectively improving the consistency of the internal temperature distribution during the operation of the charging pile while meeting the charging needs of the target charging gun to the greatest extent. It can be understood that after the target output power of each operating power module is adjusted to the preferred output power, the target output power of the operating power module and each operating power module can be updated in real time according to the power allocation control logic when the number of required power modules is less than or equal to the number of alternative power modules.

[0112] For example, the temperatures corresponding to the power modules in the same layer in the charging pile can be the same. In the process of adjusting the target output power of each operating power module from the initial output power to the preferred output power in order from high to low according to the expected temperature of the area where each operating power module is located, the target output power of each operating power module can be adjusted from the initial output power to the preferred output power in order according to the number of each operating power module. For example, when the temperature distribution characteristics of the charging pile gradually increase from bottom to top, the target output power of each operating power module can be adjusted to the preferred output power in order from small to large. When the temperature distribution characteristics of the charging pile gradually increase from top to bottom, the target output power of each operating power module can be adjusted to the preferred output power in order from large to small. In addition, the target output power of each operating power module can be adjusted from the initial output power to the preferred output power layer by layer in order from high to low according to the temperature corresponding to each operating power module, so as to effectively improve the consistency of the internal temperature distribution during the operation of the charging pile while ensuring the charging needs of the target charging gun.

[0113] In a feasible implementation manner, the process of determining the initial output power based on the magnitude relationship between the first ratio and the rated output power includes:

[0114] If the first ratio is greater than or equal to the rated output power, the rated output power is used as the initial output power;

[0115] If the first ratio is less than the rated output power, the first ratio is used as the initial output power.

[0116] Specifically, when the first ratio is greater than or equal to the rated output power, the rated output power may be used as the target output power of each operating power module to ensure the normal operation of each operating power module.

[0117] When the first ratio is less than the rated output power, the first ratio may be used as the initial output power of each operating power module to effectively meet the charging demand of the target charging gun.

[0118] In a feasible implementation, based on the current charging mode, the required charging power, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module, the target output power of each operating power module is determined, including:

[0119] When the current charging mode of the target charging gun is the constant current mode, the ratio of the required charging power to the number of the operating power modules is calculated to obtain a second ratio;

[0120] If the second ratio is greater than or equal to the rated output power, the rated output power is used as the target output power of each operating power module;

[0121] If the second ratio is less than the rated output power, the target output power of each operating power module is determined based on the second ratio and the expected temperature of the area where each operating power module is located, and the target output power is negatively correlated with the expected temperature of the area where the operating power module is located.

[0122] Specifically, when the current charging mode of the target charging gun is the constant current mode, as charging proceeds, the required charging voltage of the target charging gun will gradually increase, and accordingly, the required charging power and the preferred output power will also change. Among them, for any moment in the charging process of the target charging gun, the number of required power modules of the target charging gun can be updated based on the required charging power and the preferred output power at that moment, and when the number of required power modules is greater than the number of alternative power modules of the target charging gun, the target output power of each operating power module at that moment is determined based on the required charging power of the target charging gun at the current moment, the temperature distribution characteristics of the charging pile, and the rated output power of each operating power module.

[0123] In implementation, the ratio of the required charging power of the target charging gun at that moment to the number of operating power modules can be calculated and used as the second ratio. If the second ratio is greater than or equal to the rated output power, it means that when all operating power modules output according to the rated output power, the charging demand of the target charging gun is just met or cannot be met. At this time, the rated output power can be used as the target output power of each operating power module to meet the charging demand of the target charging gun to the greatest extent.

[0124] If the second ratio is less than the rated output power, it indicates that the charging demand of the target charging gun can be met by each operating power module corresponding to the target charging gun. At this time, the target output power of each operating power module can be determined based on the second ratio and the expected temperature of the area where each operating power module is located. For example, the target output power of each operating power module can be determined based on the expected temperature of the area where each operating power module is located, on the premise that the sum of the target output powers of each operating power module is the required charging power of the target charging gun at that moment. For example, the target output power of each operating power module can be negatively correlated with the expected temperature of the area where the corresponding operating power module is located, that is, the higher the expected temperature of the area, the smaller the target output power, and the lower the expected temperature of the area, the larger the target output power, so that the charging demand of the target charging gun can be guaranteed while effectively improving the consistency of the internal temperature distribution during the operation of the charging pile.

[0125] For example, taking the required charging power of the target charging gun as 400KW, the rated output power of each operating power module is 60KW, the preferred output power of each operating power module is 40KW, the number of alternative power modules is 8, and the charging mode of the target charging gun is constant current mode, it is determined that the required number of power modules of the target charging gun is 10 (400 / 40). It can be seen that the required number of power modules of the target charging gun, 10, is greater than the number of alternative power modules, 8. At this time, all 8 alternative power modules are used as operating power modules. Since the second ratio is 50 (400 / 8), which is less than the rated output power, the target output power of each operating power module located in the middle area can be determined to be 50KW. It can be understood that the middle area refers to the area where the expected temperature is in the middle. Generally speaking, the expected temperature in the middle of the cabinet (not the top / bottom layer) will not be the highest or lowest. Then, the target output power of each operating power module in the area where the expected temperature is higher than the middle area is determined to be 40KW, and the target output power of each operating power module in the area where the expected temperature is higher than the middle area is determined to be 60KW. It can be understood that the number of operating power modules in the area where the expected temperature is higher than the middle area needs to be the same as the number of operating power modules in the area where the expected temperature is lower than the middle area, so as to meet the required charging power of the target charging gun while improving the consistency of the internal temperature distribution during the operation of the charging pile.

[0126] In a feasible implementation, determining the target output power of each operating power module based on the second ratio and the expected temperature of the region where each operating power module is located includes:

[0127] Dividing each operating power module into a plurality of regions, the plurality of regions comprising a first region, a middle region and a second region, wherein an expected temperature of the first region is lower than an expected temperature of the middle region, and an expected temperature of the middle region is lower than an expected temperature of the second region;

[0128] Using the second ratio as the target output power of each operating power module in the middle region;

[0129] For each operating power module in the first area and the second area, determine a power correction value corresponding to each operating power module based on the second ratio and the rated output power, and use the sum of the second ratio and the power correction value as the target output power of the operating power module;

[0130] The power correction value corresponding to each operating power module in the first region is a positive value, the power correction value corresponding to each operating power module in the second region is a negative value, and the power correction value is negatively correlated with the expected temperature of the region where the operating power module is located.

[0131] Specifically, each operating power module can be divided into multiple areas according to the expected temperature of the area where each operating power module is located in order from low to high, and the multiple areas can include a first area, an intermediate area, and a second area. For example, the expected temperature of the area where the power modules on the same layer in the charging pile are located can be the same, and each operating power module can be divided into areas according to the number of layers L in which each operating power module is distributed. For example, when L is an odd number, the operating power modules on the (L+1) / 2th layer can be divided into the intermediate area. When L is an even number, the operating power modules on the L / 2th layer and the L / 2+1th layer can be divided into the intermediate area. At the same time, the operating power modules on the upper and lower sides of the intermediate area can be divided into the first area and the second area, respectively. Among them, the expected temperature of the first area can be lower than the expected temperature of the middle area, and the preset temperature of the middle area can be lower than the expected temperature of the second area. For example, when the temperature distribution characteristics of the charging pile gradually increase from bottom to top, the operating power module on the lower side of the middle area can be divided into the first area, and the operating power module on the upper side of the middle area can be divided into the second area. When the temperature distribution characteristics of the charging pile gradually increase from top to bottom, the operating power module on the upper side of the middle area can be divided into the first area, and the operating power module on the lower side of the middle area can be divided into the second area.

[0132] In implementation, the second ratio may be used as the target output power of each operating power module in the middle area. At the same time, for each operating power module in the first area and the second area, a power correction value corresponding to each operating power module may be determined based on the second ratio and the rated output power. For any operating power module in the first area and the second area, the sum of the second ratio and the power correction value corresponding to the operating power may be used as the target output power of the operating power module.

[0133] The power correction value corresponding to each operating power module in the first region is a positive value, that is, after correction, the output power of the operating power module in the first region is greater than the output power of the operating power module in the middle region, and the power correction value corresponding to each operating power module in the second region is a negative value, that is, after correction, the output power of the operating power module in the second region is less than the output power of the operating power module in the middle region. The power correction value may be negatively correlated with the expected temperature of the region where the corresponding operating power module is located, that is, the higher the expected temperature of the region, the smaller the power correction value, and the lower the expected temperature of the region, the larger the power correction value. At the same time, the sum of the second ratio and the largest power correction value among the power correction values ​​may be less than or equal to the rated output power, and the sum of the second ratio and the smallest power correction value among the power correction values ​​may be greater than 0. For example, for each operating power module in the first region, the power correction value of each operating power module can be increased layer by layer based on the step size corresponding to each power module layer in the order of the expected temperature of the region from high to low; for each operating power module in the second region, the power correction value of each operating power module can be reduced layer by layer based on the step size corresponding to each power module layer in the order of the expected temperature of the region from low to high. That is, the target output power of the operating power modules in the same layer is the same, and the target output power of each operating power module in the power module layer with higher temperature is lower. Among them, in the first region and the second region, the step sizes corresponding to different power module layers can be the same or different, and can be set according to actual needs.

[0134] It can be understood that the sum of the power correction values ​​corresponding to each operating power module in the first area can be equal in magnitude and opposite in direction to the sum of the power correction values ​​corresponding to each operating power module in the second area, thereby effectively improving the consistency of the internal temperature distribution of the charging pile during operation while ensuring the charging needs of the target charging gun.

[0135] As a preferred embodiment, when the number of operating power modules in each layer is the same (e.g., all are n), the step sizes corresponding to different power module layers may be the same and all are s, wherein s may be determined based on the rated output power, the second ratio, and the total number of layers of operating power modules, s>0. For example, in the first region, in the order of the expected temperatures of the operating power modules of each layer from high to low, the power correction values ​​may be s, 2s, ..., ms, respectively. In the second region, in the order of the expected temperatures of the operating power modules of each layer from low to high, the power correction values ​​may be -s, -2s, ..., -ms, respectively. When L is an odd number, m=(L-1) / 2, and when L is an even number, m=(L-2) / 2.

[0136] In a feasible implementation manner, the candidate power module of the target charging gun is determined by the following method:

[0137] When the working mode of the charging pile is single-gun charging mode, all power modules in the charging pile are used as candidate power modules for the target charging gun;

[0138] When the working mode of the charging pile is a multi-gun charging mode, the power module corresponding to the target charging gun and the idle power modules corresponding to other charging guns are used as alternative power modules of the target charging gun, wherein the other charging guns are charging guns other than the target charging gun.

[0139] Specifically, the working mode of the charging pile may include a single-gun charging mode and a multi-gun charging mode. When the working mode of the charging pile is a single-gun charging mode, only the target charging gun has a charging demand. At this time, each power module in the charging pile can be used as an alternative power module for the target charging gun, that is, any power module in the charging pile can be used to provide power to the target charging gun.

[0140] When the working mode of the charging pile is a multi-gun charging mode, the power module corresponding to the target charging gun and the idle power modules corresponding to other charging guns can be used as alternative power modules for the target charging gun. The power modules corresponding to the target charging gun may include power modules pre-configured for the target charging gun, that is, during the charging process of the target charging gun, the power module corresponding to the target charging gun can be preferentially allocated to the target charging gun. The other charging guns may be charging guns other than the target charging gun among the charging guns of the charging pile. The idle power modules corresponding to other charging are power modules that are not allocated to other charging guns for charging, or power modules that are released by other charging guns during the charging process due to a reduction in the number of required power modules, so that each power module can be fully utilized to charge the target charging gun to meet the charging needs of the target charging gun to the greatest extent.

[0141] In a feasible implementation manner, when the working mode of the charging pile is a multi-gun charging mode, it also includes:

[0142] Based on a start-up sequence of the target charging gun and other charging guns other than the target charging gun, an alternative power module of the target charging gun is determined.

[0143] Specifically, the candidate power module of the target charging gun can be determined based on the start-up order of the target charging gun and other charging guns other than the target charging gun, according to the first-come-first-served principle. For example, the determination order of the candidate power modules of the target charging gun can be positively correlated with the start-up order of the target charging gun, that is, the candidate power modules of each charging gun can be determined in sequence according to the start-up order of each charging gun, so that the charging demand of the charging gun that is started first can be met first, thereby improving the turnover efficiency of the charging pile, and can effectively avoid the call conflict of power modules of different charging guns during the charging process, ensuring the effective operation of each charging gun.

[0144] In a feasible implementation manner, determining the candidate power module of the target charging gun based on the startup sequence of the target charging gun and other charging guns other than the target charging gun includes:

[0145] If the target charging gun is started before at least one of the other charging guns, the candidate power modules of the target charging gun are determined based on the relationship between the number of required power modules and the number of idle power modules in the charging pile;

[0146] If the target charging gun is started later than the other charging guns, all idle power modules in the charging pile are determined as candidate power modules for the target charging gun.

[0147] Specifically, the idle power modules in the charging pile may include power modules that are not determined as operating power modules of other charging guns that are started first in the charging pile. It is understandable that when the target charging gun is started before other charging guns, the idle power modules may include all power modules in the charging pile.

[0148] During implementation, when the target charging gun is started before at least one of the other charging guns, that is, when the target charging gun is not the last to be started, the alternative power modules of the target charging gun can be determined based on the relationship between the number of required power modules and the number of idle power modules of the target charging gun.

[0149] Optionally, based on the relationship between the number of required power modules and the number of idle power modules in the charging pile, the candidate power modules of the target charging gun are determined, including:

[0150] If the number of required power modules is less than the number of idle power modules, all idle power modules are determined as candidate power modules for the target charging gun;

[0151] If the required number of power modules is greater than or equal to the number of idle power modules, the idle power modules other than the target power module are determined as candidate power modules for the target charging gun, and the target power module is used to provide power for other charging guns that are started later than the target charging gun.

[0152] Among them, when the number of required power modules of the target charging gun is less than the number of idle power modules, it indicates that the charging demand of the target charging gun can be fully met, and there are remaining idle power modules that can provide power for other charging guns that are started later than the target charging gun. At this time, all idle power modules can be used as alternative power modules for the target charging gun.

[0153] When the number of required power modules of the target charging gun is greater than or equal to the number of idle power modules, it indicates that when all idle power modules are operating according to the preferred output power, there are no remaining idle power modules to provide power for other charging guns that are started later than the target charging gun. At this time, the idle power modules other than the target power module can be used as alternative power modules of the target charging gun to reserve the target power module to provide power for other charging guns that are started later than the target charging gun, thereby effectively avoiding the situation where the charging gun cannot be charged after being connected to the vehicle, and realizing the effective operation of the charging pile.

[0154] The target power module may be a predetermined power module, and the target power module may also be determined from the idle power modules according to the temperature distribution characteristics of the charging pile.

[0155] As a preferred implementation, the target power module is determined by the following method:

[0156] Based on the temperature distribution characteristics of the charging pile, K idle power modules are determined as target power modules in the order of the expected temperature of the area from low to high, where K is a positive integer.

[0157] Among them, the first K idle power modules can be used as target power modules in the order of expected temperature of the area from low to high, where K can be the number of target power modules and K is a positive integer, that is, the expected temperature of the area where the target power module is located is lower than the expected temperature of the area where each idle power module other than the target power module is located, so that the target power module can provide a longer charging time. For example, when the temperature distribution trend inside the charging pile is gradually increasing from top to bottom, the top layer of idle power modules can be used as the target power modules, and when the temperature distribution trend inside the charging pile is gradually increasing from bottom to top, the bottom layer of idle power modules can be used as the target power modules.

[0158] It is understandable that when power is provided to each charging gun on a first-come, first-served basis, the charging time of a charging gun with a later start-up order may be longer. Thus, the target power module can effectively provide power to other charging guns that are started later than the target charging gun.

[0159] During implementation, the value of K can be determined according to the start-up order of the target charging guns. For example, the number of target power modules can be determined based on the start-up order of the target charging guns and a preset correspondence between the start-up order and the number of target power modules. The earlier the start-up order, the larger K is, and the later the start-up order, the smaller K is. This enables the effective operation of each charging gun to be achieved while ensuring that each charging gun is provided with power on a first-come, first-served basis.

[0160] In addition, when the target charging gun is started later than other charging guns (i.e., the target charging gun is the charging gun started last), all idle power modules in the charging pile can be directly used as alternative power modules for the target charging gun to fully utilize the power modules in the charging pile.

[0161] In a feasible implementation, it also includes:

[0162] If there is at least one other charging gun that is started before the target charging gun, the power modules released by the other charging guns that are started before the target charging gun and adjacent to the target charging gun are updated as candidate power modules of the target charging gun.

[0163] Specifically, for any charging gun, the power module released by the charging gun may include a power module that stops charging the charging gun as charging progresses. For example, when the charging gun is charged in constant voltage mode, the required charging power will gradually decrease as charging progresses. As a result, the operating power module of the charging gun is gradually cut out (i.e., stops providing power to the charging gun). In addition, the power module released by the charging gun may also include a power module that is updated to be an alternative power module of the charging gun during the charging process of the charging gun, but is not called as an operating power module by the charging gun. For example, after the power module released by a charging gun that is started before and adjacent to the charging gun is updated to be an alternative power module of the charging gun, if it is not called as an operating power module by the charging gun, the power module can continue to be updated to be the alternative power module of the next charging gun to be started.

[0164] During implementation, when there is at least one other charging gun that is started before the target charging gun, the power modules released by the other charging guns that are started before the target charging gun and adjacent to the target charging gun can be updated to the alternative power modules of the target charging gun, thereby enabling full utilization of the power modules in the charging pile, further improving the charging efficiency of each charging gun, and there is no need to re-determine the alternative power modules of other charging guns.

[0165] It can be understood that, for any charging gun, when the number of required power modules of the charging gun increases, the candidate power modules of the charging gun and each charging gun started later than the charging gun can be re-determined.

[0166] In a feasible implementation, it also includes:

[0167] If the target charging gun is started later than at least one other charging gun and the number of required power modules is greater than the number of alternative power modules, the target output power of each operating power module is determined based on the charging demand information and the rated output power of each operating power module.

[0168] Specifically, when the target charging gun is started later than at least one other charging gun, and the required number of power modules of the target charging gun is greater than the number of alternative power modules of the target charging gun, it indicates that the startup order of the target charging gun is late, and when each alternative power module is used as the operating power module of the target charging gun and provides power to the target charging gun according to the preferred output power, the charging demand of the target charging gun cannot be met.

[0169] At this time, the target output power of each operating power module can also be determined based on the required charging power of the target charging gun and the rated output power of each operating power module of the target charging gun. For example, the ratio of the required charging power of the target charging gun to the number of operating power modules of the target charging gun can be obtained, and the ratio can be compared with the rated output power. If the ratio is greater than the rated output power, it indicates that when each operating power module outputs power according to the maximum output capacity, it still cannot meet the charging demand of the target charging gun. At this time, the rated output power can be used as the target output power of each operating power module; if the ratio is less than or equal to the rated output power, it indicates that the operating power module allocated to the target charging gun can meet the charging demand of the target charging gun. At this time, the ratio can be used as the target output power of each operating power module. It can be understood that the target output power of each operating power module can also be determined based on the required charging power of the target charging gun and the temperature distribution characteristics of the charging pile, so as to ensure the effective operation of each power module in the charging pile while meeting the charging demand of the charging gun to the greatest extent.

[0170] Exemplary Devices

[0171] In an exemplary embodiment of the present specification, a charging pile is also provided, such as Figure 3 As shown, it includes: a controller 301, multiple power modules 201 and at least one charging gun 302 ( Figure 3 In the figure, a charging gun is used as an example, the controller 301 includes at least one processor and at least one memory, and a computer program is stored in the memory. When the computer program is executed by the processor, each power module 201 is controlled to provide power to the charging gun 302 based on the charging pile power distribution control method in any of the above embodiments.

[0172] In another exemplary embodiment of the present specification, a charging station is also provided, comprising at least one charging pile as described in the above embodiment.

[0173] Exemplary computer program products and storage media

[0174] In addition to the above-mentioned methods and devices, the charging pile power distribution control method provided in the embodiments of this specification may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the charging pile power distribution control method according to various embodiments of this specification described in the above "Exemplary Method" section of this specification.

[0175] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of this specification, including object-oriented programming languages ​​such as Java, C++, etc., and also conventional procedural programming languages ​​such as "C" language or similar programming languages. The program code may be executed entirely on the charging pile, partially on the charging pile, as a separate software package, partially on the charging pile and partially on the remote device, or entirely on the remote device or server.

[0176] In addition, an embodiment of the present specification also provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps of the charging pile power distribution control method according to various embodiments of the present specification described in the above "Exemplary Method" section of the present specification.

[0177] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this specification can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0178] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0179] The above-mentioned embodiments only express several implementation methods of this specification, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the solutions provided by the embodiments of this specification. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of this specification, which all belong to the protection scope of this specification. Therefore, the protection scope of the patent of this specification shall be based on the attached claims.

Claims

1. A charging pile power distribution control method, characterized in that: Applied to a charging pile including a plurality of power modules, the method comprises: Determine the required number of power modules of the target charging gun based on the charging demand information of the target charging gun and the preferred output power corresponding to the power module; the preferred output power includes the output power provided by the power module at the optimal efficiency point; Based on the relationship between the number of required power modules and the number of candidate power modules of the target charging gun, as well as the charging demand information and the temperature distribution characteristics of the charging pile, an operating power module is determined from each of the candidate power modules, and a target output power of each of the operating power modules is determined; the temperature distribution characteristics include the expected temperature of each area in the charging pile; Each of the operating power modules is controlled to provide electric energy to the target charging gun at the corresponding target output power.

2. The method according to claim 1, characterized in that The charging demand information includes required charging power; The step of determining an operating power module from each of the candidate power modules based on the relationship between the number of required power modules and the number of candidate power modules of the target charging gun, as well as the charging demand information and the temperature distribution characteristics of the charging pile, and determining a target output power of each of the operating power modules includes: If the required number of power modules is less than or equal to the number of candidate power modules, determining the operating power module based on the temperature distribution characteristics of the charging pile, and determining the target output power of each operating power module based on the required charging power and the preferred output power; If the required number of power modules is greater than the number of alternative power modules, all of the alternative power modules are determined as operating power modules, and the target output power of each operating power module is determined based on the required charging power and the temperature distribution characteristics of the charging pile.

3. The method according to claim 2, characterized in that In a case where the number of required power modules is less than or equal to the number of candidate power modules, determining the operating power module based on the temperature distribution characteristics of the charging pile includes: Based on the temperature distribution characteristics of the charging pile, M candidate power modules are determined as the operating power modules in order from low to high expected temperatures in the area, where M is the number of required power modules and M is a positive integer.

4. The method according to claim 3, characterized in that In a case where the number of required power modules is less than or equal to the number of candidate power modules, determining the target output power of each operating power module based on the required charging power and the preferred output power includes: Determine the preferred output power as the target output power of M-1 operating power modules, and determine the difference between the required charging power and the target power as the target output power of the remaining operating power module; The target power is the sum of the output powers of the M-1 operating power modules output at the corresponding preferred output powers.

5. The method according to claim 4, characterized in that The remaining one operating power module is determined by the following method: Based on the temperature distribution characteristics of the charging pile, an operating power module with the highest expected temperature in the area where the M operating power modules are located is taken as the remaining operating power module.

6. The method according to claim 2, characterized in that In a case where the number of required power modules is greater than the number of candidate power modules, determining the target output power of each operating power module based on the required charging power and the temperature distribution characteristics of the charging pile includes: Obtaining the current charging mode of the target charging gun; The target output power of each of the operating power modules is determined based on the current charging mode, the required charging power, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module.

7. The method according to claim 6, characterized in that The determining the target output power of each of the operating power modules based on the current charging mode, the required charging power, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module includes: When the current charging mode of the target charging gun is the constant voltage mode, based on the required charging power of the target charging gun, the target output power of each operating power module is adjusted from the initial output power to the preferred output power in order from high to low according to the expected temperature of the area where each operating power module is located, wherein the initial output power is determined based on the relationship between a first ratio and the rated output power, and the first ratio is the ratio of the required charging power of the target charging gun at the start of charging to the number of the operating power modules.

8. The method according to claim 7, characterized in that The process of determining the initial output power based on the magnitude relationship between the first ratio and the rated output power includes: If the first ratio is greater than or equal to the rated output power, the rated output power is used as the initial output power; If the first ratio is smaller than the rated output power, the first ratio is used as the initial output power.

9. The method according to claim 6, characterized in that The determining the target output power of each of the operating power modules based on the current charging mode, the required charging power, the temperature distribution characteristics of the charging pile, and the rated output power of the operating power module includes: When the current charging mode of the target charging gun is a constant current mode, calculating a ratio of the required charging power to the number of the operating power modules to obtain a second ratio; If the second ratio is greater than or equal to the rated output power, the rated output power is used as the target output power of each of the operating power modules; If the second ratio is less than the rated output power, the target output power of each operating power module is determined based on the second ratio and the expected temperature of the area where each operating power module is located, and the target output power is negatively correlated with the expected temperature of the area where the operating power module is located.

10. The method according to claim 9, characterized in that The step of determining the target output power of each of the operating power modules based on the second ratio and the expected temperature of the region where each of the operating power modules is located includes: Dividing each of the operating power modules into a plurality of regions, the plurality of regions comprising a first region, a middle region and a second region, wherein an expected temperature of the first region is lower than an expected temperature of the middle region, and an expected temperature of the middle region is lower than an expected temperature of the second region; Using the second ratio as the target output power of each of the operating power modules in the middle region; For each of the operating power modules in the first area and the second area, based on the second ratio and the rated output power, determine a power correction value corresponding to each of the operating power modules, and use the sum of the second ratio and the power correction value as the target output power of the operating power module; The power correction value corresponding to each operating power module in the first area is a positive value, the power correction value corresponding to each operating power module in the second area is a negative value, and the power correction value is negatively correlated with the expected temperature of the area where the operating power module is located.

11. The method according to any one of claims 1 to 10, characterized in that: The candidate power module of the target charging gun is determined by the following method: When the working mode of the charging pile is a single-gun charging mode, all the power modules in the charging pile are used as candidate power modules for the target charging gun; When the working mode of the charging pile is a multi-gun charging mode, the power module corresponding to the target charging gun and the idle power modules corresponding to other charging guns are used as alternative power modules of the target charging gun, wherein the other charging guns are charging guns other than the target charging gun.

12. A charging pile, characterized in that: include: A controller, multiple power modules and at least one charging gun, the controller includes at least one processor and at least one memory, the memory stores a computer program, and when the computer program is executed by the processor, the charging pile power distribution control method according to any one of claims 1 to 11 controls each power module to provide electrical energy to the charging gun.

13. A charging station, characterized in that: Includes at least one charging pile as claimed in claim 12.

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