Charging control method of charging pile, charging pile and charging equipment

Abstract

The invention provides a charging control method of a charging pile, the charging pile and charging equipment. The method comprises the following steps: acquiring charging demand power, the number of available modules, and first power and second power of each power module; based on the charging demand power and the first power, determining the number of candidate starting modules and residual demand power; the number of the candidate starting modules is the number of the power modules used for outputting the first power; based on the number of the candidate starting modules, the number of the available modules, the residual demand power, the first power and the second power, determining the number of target starting modules and target power corresponding to each starting module; and controlling each starting module to output the corresponding target power so as to charge the target equipment. According to the invention, the first power when the power modules output the highest efficiency is used as the basis of efficiency optimization, and when the maximum number of power modules are controlled to work at the highest efficiency point, high-efficiency charging of the target equipment can be realized, and energy is saved.

Description

Technical Field

[0001] This application relates to the technical field of charging piles, and particularly to a charging control method, device, equipment and storage medium for a charging pile. Background Art

[0002] With the popularization of electric vehicles, the efficiency and reliability of charging piles have become the key to technological development. Existing charging piles usually consist of multiple power modules and a main control chip. The main control chip controls the startup and output power of the power modules according to the real-time charging demand power to achieve the distribution of the charging demand power. However, in existing charging control schemes, usually some power modules are controlled to output at the maximum power, and the remaining power modules supplement the remaining required power. The efficiency of the power modules when outputting at the maximum power is often lower than the highest efficiency, resulting in a relatively low overall efficiency of the charging pile and large energy losses. Moreover, the power modules that output at the maximum power for a long time may accelerate aging due to excessive thermal load, affecting the reliability of the charging pile. Summary of the Invention

[0003] Embodiments of this application provide a charging control method, a charging pile and a charging device for a charging pile, which can improve the reliability of the charging control method, extend the lifespan of each power module in the charging pile, and reduce the module aging speed.

[0004] To achieve the above object, the embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, embodiments of this application provide a charging control method for a charging pile. The charging pile includes multiple power modules; the power modules are used to charge a target device; the method includes: obtaining the charging demand power, the number of available modules, and the first power and the second power of each power module; where the number of available modules is the number of available power modules among the multiple power modules, the first power is the power when each power module outputs at the highest efficiency, and the second power is the maximum power output by each power module; determining the number of target startup modules and the target power corresponding to each startup module based on the charging demand power, the first power, the number of available modules, and the second power; controlling each startup module to output the corresponding target power to charge the target device.

[0006] Based on this solution, by obtaining the charging demand power, the number of available modules, and the first power and the second power of each power module, the first power when the power module outputs at the highest efficiency can be used as the basis for efficiency optimization. At the same time, based on the charging demand power and the first power, the maximum number of power modules can be controlled to operate at the highest efficiency point, determining the number of target startup modules and the target power corresponding to each startup module that meet the charging scenario, achieving high-efficiency charging of the target device and saving energy. At the same time, to a certain extent, the aging speed of the power modules is reduced, and the reliability of the charging pile is improved.

[0007] In some embodiments of the present application, determining the target number of starting modules and the target power corresponding to each starting module based on the charging demand power, the first power, the number of available modules, and the second power includes:

[0008] Based on the charging demand power and the first power, determining the candidate number of starting modules and the remaining demand power; the candidate number of starting modules is the number of power modules for outputting the first power;

[0009] Based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power, determining the target number of starting modules and the target power corresponding to each starting module.

[0010] Based on the charging demand power and the first power, determining the candidate number of starting modules and the remaining demand power can control the maximum number of power modules to work at the highest efficiency point. Furthermore, based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power, the target number of starting modules that meets the charging scenario and the target power corresponding to each starting module can be determined, realizing high-efficiency charging of the target device.

[0011] In some embodiments of the present application, determining the target number of starting modules and the target power corresponding to each starting module based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power includes: when the number of candidate starting modules is greater than or equal to 1 and less than the number of available modules, determining the power margin of a single power module based on the first power and the second power; based on the magnitude relationship between the remaining demand power and the power margin, the remaining demand power, and the first power, determining the target number of starting modules and the target power corresponding to each starting module.

[0012] Based on this solution, since the power margin can represent the additional power that a power module can bear while maintaining high efficiency, therefore, when the number of candidate starting modules is less than the number of available modules, based on the magnitude relationship between the remaining demand power and the power margin, the remaining demand power, and the first power, the optimal target number of starting modules and the target power corresponding to each starting module can be determined.

[0013] In some embodiments of the present application, determining the number of target starting modules and the target power corresponding to each starting module based on the magnitude relationship between the remaining required power and the power margin, the remaining required power, and the first power includes: when the remaining required power does not exceed the power margin, taking N as the number of target starting modules; taking the first power as the target power corresponding to N - 1 starting modules; taking the sum of the first power and the remaining required power as the target power corresponding to the remaining 1 starting module; where N is the number of candidate starting modules; when the remaining required power is greater than the power margin, taking N + 1 as the number of target starting modules; taking the first power as the target power corresponding to N - 1 starting modules; determining the target adjustment value, taking the difference between the first power and the target adjustment value as the target power corresponding to the Nth starting module, and taking the sum of the remaining required power and the target adjustment value as the target power corresponding to the N + 1th starting module.

[0014] Based on this solution, when the remaining required power does not exceed the power margin, that is, when the sum of the first power and the remaining required power is less than the second power, the power module can maintain a high-efficiency operating point. Therefore, when N is the number of candidate starting modules, taking the first power as the target power corresponding to N - 1 starting modules; taking the sum of the first power and the remaining required power as the target power corresponding to the remaining 1 starting module is the optimal charging control solution, which can maximize the charging efficiency. When the remaining required power is greater than the power margin, that is, when the sum of the first power and the remaining required power is greater than the second power, starting N + 1 available power modules, and when selecting an appropriate target adjustment value, taking the first power as the target power corresponding to N - 1 starting modules; determining the target adjustment value, taking the difference between the first power and the target adjustment value as the target power corresponding to the Nth starting module, and taking the sum of the remaining required power and the target adjustment value as the target power corresponding to the N + 1th starting module is the optimal charging control solution, which can maximize the charging efficiency.

[0015] In some embodiments of the present application, determining the target adjustment value includes: based on the remaining required power and multiple first adjustment values, determining the first adjustment power corresponding to each first adjustment value and the first efficiency corresponding to the first adjustment power; based on the first power and multiple first adjustment values, determining the second adjustment power corresponding to each first adjustment value and the second efficiency corresponding to the second adjustment power; based on the first adjustment power and the second adjustment power corresponding to each first adjustment value, the first efficiency corresponding to the first adjustment power, and the second efficiency corresponding to the second adjustment power, determining the energy efficiency corresponding to each first adjustment value; based on the magnitude relationship between the energy efficiencies corresponding to each first adjustment value, determining the target adjustment value among the multiple first adjustment values.

[0016] Based on this solution, since the first adjustment power corresponding to each first adjustment value is determined based on the remaining demand power and multiple first adjustment values, and the second adjustment power corresponding to each first adjustment value is determined based on the first power and multiple first adjustment values, therefore, based on the first adjustment power and the second adjustment power corresponding to each first adjustment value, the first efficiency corresponding to the first adjustment power, and the second efficiency corresponding to the second adjustment power, the energy efficiency corresponding to each first adjustment value can be determined more accurately. Furthermore, based on the magnitude relationship between the energy efficiencies corresponding to each first adjustment value, the target adjustment value that adapts to the maximum energy efficiency can be determined among multiple first adjustment values.

[0017] In some embodiments of the present application, determining the target adjustment value among multiple first adjustment values based on the magnitude relationship between the energy efficiencies corresponding to each first adjustment value includes: determining the maximum energy efficiency among the energy efficiencies corresponding to each first adjustment value; and taking the first adjustment value corresponding to the maximum energy efficiency as the target adjustment value.

[0018] Based on this solution, by taking the first adjustment value corresponding to the maximum energy efficiency among the energy efficiencies corresponding to each first adjustment value as the target adjustment value, the first adjustment value at which the power module operates at the highest energy efficiency can be determined.

[0019] In some embodiments of the present application, determining the target number of starting modules and the target power corresponding to each starting module based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power includes: when the number of candidate starting modules is greater than or equal to the number of available modules, determining the number of module compensations based on the number of available modules, the first power, and the second power; and determining the target number of starting modules and the target power corresponding to each starting module based on the magnitude relationship between the number of module compensations and the number of available modules and the remaining demand power.

[0020] Based on this solution, when the number of candidate starting modules is greater than or equal to the number of available modules, that is, when the charging demand power cannot be met when all available power modules operate at the maximum efficiency point, based on the number of available modules, the first power, and the second power, the number of module compensations used to represent how many available power modules are needed to compensate for the underload power (the difference between the charging demand power and the total output power when all available power modules work at the maximum efficiency point) can be determined. Furthermore, based on the magnitude relationship between the number of module compensations and the number of available modules, the optimal target number of starting modules and the target power corresponding to each starting module can be determined.

[0021] In some embodiments of the present application, determining the module compensation quantity based on the available module quantity, the first power, and the second power includes: determining the underload power based on the available module quantity and the first power; the underload power is the difference between the charging demand power and the total output power when each available power module operates at the highest efficiency point; determining the power margin of a single power module based on the first power and the second power; and taking the quotient of the underload power and the power margin as the module compensation quantity.

[0022] Based on this solution, since the underload power is the difference between the charging demand power and the total output power when all available power modules operate at the maximum efficiency point, and the power margin represents the additional power that a power module can bear on the premise of maintaining high efficiency, based on the quotient of the underload power and the power margin, the module compensation quantity can be accurately determined.

[0023] In some embodiments of the present application, determining the underload power based on the available module quantity and the first power includes: obtaining the charging demand power; determining the product of the available module quantity and the first power; and taking the difference between the charging demand power and the product as the underload power.

[0024] Based on this solution, since the product of the available module quantity and the first power can represent the total output power when the available power modules operate at the maximum efficiency point, therefore, based on the difference between the charging demand power and the product, the underload power can be accurately determined.

[0025] In some embodiments of the present application, determining the target starting module quantity and the target power corresponding to each starting module based on the magnitude relationship between the module compensation quantity and the available module quantity and the remaining demand power includes: taking M as the target starting module quantity; where M is the available module quantity; when K is greater than or equal to M, taking the second power as the target power corresponding to each starting module; where K is the module compensation quantity; when K is less than M, taking the second power as the target power corresponding to K starting modules; taking the first power as the target power corresponding to the (M - K - 1)-th starting module, and taking the remaining demand power as the target power corresponding to the remaining 1 starting module.

[0026] Based on this solution, since the number of candidate startup modules is greater than or equal to the number of available modules, starting all available power modules is beneficial to improving the charging efficiency of the charging pile. And when the module compensation number K is greater than or equal to the number of available modules M, that is, when the charging demand power is greater than or equal to the total power output when all available power modules operate at the maximum power point, controlling all available power modules to operate at the maximum power point is the optimal solution, which can output the maximum power to the target device. When the module compensation number K is less than the number of available modules M, that is, when the charging demand power is less than the total power output when all available power modules operate at the maximum power point, controlling K startup modules to operate at the maximum power point, controlling M - K - 1 startup modules to operate at the maximum efficiency point, and controlling one startup module to operate at the remaining demand power point is the optimal charging control solution, which can maximize the charging efficiency.

[0027] In a second aspect, an embodiment of the present application provides a charging pile, which includes: a controller and a plurality of power modules; the controller is coupled to the plurality of power modules; the controller is configured to execute the charging control method of the charging pile provided in the first aspect above.

[0028] In a third aspect, an embodiment of the present application provides a charging device, which includes: a charging pile and a charging gun; the charging pile is coupled to the charging gun, and the charging gun is used to be coupled to a target device; the charging pile includes a controller and a plurality of power modules, and the controller is coupled to the plurality of power modules; the controller is configured to execute the charging control method of the charging pile provided in the first aspect above.

[0029] In a fourth aspect, an embodiment of the present application provides a charging control device for a charging pile, and the device includes:

[0030] An acquisition module, configured to acquire the charging demand power, the number of available modules, and the first power and the second power of each power module; wherein, the number of available modules is the number of available power modules among the plurality of power modules, the first power is the power when each power module outputs the highest efficiency, and the second power is the maximum power output by each power module;

[0031] A first determination module, configured to determine the number of candidate startup modules and the remaining demand power based on the charging demand power and the first power; the number of candidate startup modules is the number of power modules for outputting the first power;

[0032] A second determination module, configured to determine the number of target startup modules and the target power corresponding to each startup module based on the number of candidate startup modules, the number of available modules, the remaining demand power, the first power, and the second power;

[0033] A control module, configured to control each startup module to output the target power to charge the target device.

[0034] In a fifth aspect, an embodiment of the present application provides a storage medium storing a computer program for executing the charging control method of the charging pile provided in the first aspect above.

[0035] In a sixth aspect, an embodiment of the present application provides a computer program product, when the instructions in the computer program product are executed by a processor, the charging control method of the charging pile provided in the first aspect above is executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic structural diagram of a charging pile provided by an embodiment of the present application.

[0037] Figure 2 It is a schematic flowchart of a charging control method of a charging pile provided by an embodiment of the present application.

[0038] Figure 3 It is a schematic diagram of the efficiency curve of a power module provided by an embodiment of the present application.

[0039] Figure 4 It is a schematic flowchart of another charging control method of a charging pile provided by an embodiment of the present application.

[0040] Figure 5 It is a schematic flowchart of yet another charging control method of a charging pile provided by an embodiment of the present application.

[0041] Figure 6 It is a schematic flowchart of yet another charging control method of a charging pile provided by an embodiment of the present application.

[0042] Figure 7 It is a schematic flowchart of yet another charging control method of a charging pile provided by an embodiment of the present application.

[0043] Figure 8 It is a schematic structural diagram of a charging pile provided by an embodiment of the present application.

[0044] Figure 9 It is a schematic structural diagram of a charging control device of a charging pile provided by an embodiment of the present application.

[0045] Figure 10 It is a schematic structural diagram of a charging device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. To facilitate a clear description of the technical solutions in the embodiments of the present application, the first, second, etc. descriptions that appear in the embodiments of the present application are only for the purpose of schematic illustration and distinguishing the description objects, without any order, nor do they represent special limitations on the number of devices in the embodiments of the present application, and cannot constitute any limitation to the embodiments of the present application.

[0047] The following explains the relevant technical terms in the embodiments of the present application:

[0048] A computing device is an electronic device used to perform computing tasks. Computing devices can include personal computers, servers, embedded computers, supercomputers, etc. In the present application, the server is taken as an example for illustrative purposes. The server in the present application can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, cloud communication, middleware services, domain name services, security services, Content Delivery Network (CDN), as well as large databases and artificial intelligence platforms. When the above server is a server cluster or distributed system composed of multiple physical servers, multiple physical servers can form a blockchain, and each physical server is a node on the blockchain. The physical types of servers can include rack servers, blade servers, high-density servers, graphic processing unit (GPU) servers, tower servers, and can also be blade servers, artificial intelligence (AI) servers, etc. The embodiments of the present application do not limit the types of servers.

[0049] A charging pile is the core energy replenishment device for electric vehicles (EVs), and its function is to safely and efficiently transfer the electric energy from the power grid to the electric vehicle battery. Charging piles can be divided into direct current charging piles and alternating current charging piles according to the current type. According to the installation method, they can include wall-mounted, column-mounted, and mobile types.

[0050] A power module is mainly used for power conversion, power transformation, and safety protection, etc., which directly affects the charging efficiency, safety, and reliability. The power module can include a power factor correction circuit and a DC / DC converter.

[0051] The main control chip is a key component for realizing core functions such as charging management, communication, and safety protection. The main control chip can be at least one of a microcontroller unit (MCU), a microprocessor unit (MPU), a digital signal processor (DSP), a field-programmable gate array (FPGA), and a system on chip (SoC), and can be determined according to the power level, function complexity, and intelligent requirements of the charging pile.

[0052] The embodiment of the present application provides a charging control method for a charging pile. By obtaining the charging demand power, the number of available modules, and the first power and the second power of each power module, this method can use the power when the power module outputs the highest efficiency as the basis for efficiency optimization. At the same time, based on the charging demand power and the first power, the number of candidate starting modules and the remaining demand power are determined, and the maximum number of power modules can be controlled to work at the highest efficiency point. Furthermore, based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power, the number of target starting modules that meet the charging scenario and the target power corresponding to each starting module can be determined, realizing high-efficiency charging of the target device, saving energy. At the same time, to a certain extent, it reduces the aging speed of the power module and improves the reliability of the charging pile.

[0053] The charging control method provided by the embodiment of the present application can be applied to, for example, Figure 1 the main control chip shown. Figure 1 It is a schematic structural diagram of a charging pile provided by the embodiment of the present application. As Figure 1 shown, the charging pile 10 may include a plurality of power modules 101 and a main control chip 102 for controlling the plurality of power modules 101. Among them, the main control chip 102 is coupled to each power module 101 and is used to transmit power control signals to each power module. The charging pile 10 can be a charging pile. The number of the plurality of power modules 101 (the total number of power modules, denoted as Ntot) can be determined according to the total power Ptot of the charging pile 10 and the maximum power of the power module 101. Among them, the maximum power of the power module 101, also known as the rated maximum power, refers to the power output by the power module 101 when the load rate is 100% load. In some examples, Ntot = Ptot / Pmod. The embodiment of the present application does not limit the size of Ntot. The following embodiments take Ntot as 24, that is, the charging pile 10 includes 24 power modules 101 as an example for illustrative description.

[0054] Exemplarily, the target device may be a device that receives the charging power signal output by the charging pile. In some examples, the target device may be an electric vehicle. For example, the target device may be an electric car, an electric bus, an electric fire truck, etc.

[0055] The charging pile described in the embodiments of the present application is to more clearly illustrate the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the system architecture, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0056] Figure 2 It is a schematic flowchart of a charging control method for a charging pile provided by an embodiment of the present application. As Figure 2 shown, the charging control method of this charging pile can be applied to the main control chip 102 as Figure 1 shown. The charging control method of this charging pile may include the following steps 201 to step 204.

[0057] Step 201, obtain the charging demand power, the number of available modules, and the first power and the second power of each power module.

[0058] Among them, the number of available modules is the number of available power modules among multiple power modules. The first power is the power when each power module outputs the highest efficiency, and the second power is the maximum power output by each power module.

[0059] Exemplarily, the charging demand power, denoted as Pcar_need, refers to the electrical energy input power that the battery management system of the electric vehicle requests from the charging pile in real time during the charging process of the electric vehicle, and can be jointly determined by the battery capacity and the charging technology type. In some examples, if the battery capacity is 60 kWh (kilowatt-hour) and the charging technology type is fast charging, the charging demand power Pcar_need may be 170 kW (kilowatt). In other examples, if the battery capacity is 100 kWh and the charging technology type is fast charging, the charging demand power Pcar_need may be 500 kW. The embodiments of the present application do not limit the magnitude of the charging demand power.

[0060] The available power module is a power module in an idle state among multiple power modules, that is, a power module other than the power modules in the operating state among multiple power modules. The number of available modules, denoted as M, may be less than or equal to the total number Ntot of power modules included in the charging pile, and can be determined according to the number of occupied power modules in the charging pile. As Figure 1 shown, if the charging pile 10 includes 24 power modules 101 and 10 power modules 101 are in the operating state, the available power modules may include the remaining 14 power modules 101, and the number of available modules may be 14.

[0061] The second power, denoted as Pmod, corresponds to the maximum power of the power module and can be determined according to the power - efficiency correspondence relationship of the power module. Among them, the power - efficiency correspondence relationship can correspond to the efficiency curve in the data sheet of the power module. Figure 3 It is a schematic diagram of the efficiency curve of a power module provided by an embodiment of the present application. As Figure 3 shown, where the abscissa represents the load rate and the ordinate represents the efficiency. Pmod can be the power at power point A when the load rate is 100% load (full load) in the efficiency curve 301.

[0062] Different types of power modules can correspond to different efficiency curves and thus different Pmods. The embodiment of the present application does not limit the type of the power module, and the power module can be any one of an insulated gate bipolar transistor (IGBT) module, an intelligent power module (IPM), and a thyristor module.

[0063] In some examples, Pmod can be 30kW or 40kW. The embodiment of the present application does not limit the size of Pmod, and the embodiment of the present application takes Pmod as 40kW as an example for illustrative purposes.

[0064] The first power, denoted as Pmod_max, can be the power corresponding to the maximum - efficiency power point in the efficiency curve 301 as Figure 3 shown. In some examples, the maximum - efficiency power point can be the power point B when the load rate is 60% load in the efficiency curve 301. That is, Pmod_max is 60% of Pmod. Taking Pmod as 40kW as an example, Pmod_max can be 24kW. In other examples, if Pmod_max is 70% of Pmod and Pmod is 40kW, then Pmod_max can be 28kW. The embodiment of the present application does not limit the size of Pmod_max, and the embodiment of the present application takes Pmod_max as 24kW as an example for illustrative purposes.

[0065] Exemplarily, referring to Figure 1 shown, the main control chip 102 can pre - store the efficiency characteristic data of the power module and real - time monitor the operating states of the power modules in the charging pile 10. When receiving a charging request from a target device and the charging pile starts charging, it receives Pcar_need transmitted by the battery management system of the target device, determines M based on the operating states of the power modules, and reads Pmod_max and Pmod in the efficiency characteristic data.

[0066] Exemplarily, the efficiency characteristic data of the power module can be the data corresponding to the power curve of the power module. In some examples, the efficiency characteristic data of the power module can include the efficiencies corresponding to multiple power segments obtained by dividing the maximum power Pmod of the power module at a fixed step size, and the efficiency corresponding to each power segment. Taking the fixed step size as 1 kW, Pmod as 40 kW, the efficiency of the first power segment from 0 to 1 kW as η1, the efficiency of the second power segment from 1 kW to 2 kW as η2... and the efficiency of the 40th power segment from 39 kW to 40 kW as η40 as an example, the efficiency characteristic data of the power module can be seen in Table 1 below.

[0067] Table 1

[0068]

[0069]

[0070] Among them, taking the power segment from 0 to 1 kW as an example, η1 can be the average value of the efficiencies corresponding to multiple power points in the range from 0 to 1 kW. If the multiple power points in the range from 0 to 1 kW include 0.1 kW, 0.2 kW, 0.3 kW, 0.4 kW... 1 kW, then η1 can be the average value of the efficiency η0.1 corresponding to 0.1 kW, the efficiency η0.2 corresponding to 0.2 kW, the efficiency η0.3 corresponding to 0.3 kW, the efficiency η0.4 corresponding to 0.4 kW... and the efficiency η1 corresponding to 1 kW. It can be understood that η0.1, η0.2, η0.3, η0.4... η1 can be determined by querying the efficiency curve of the power module.

[0071] Since the determination methods of the efficiencies corresponding to each power segment in Table 1 are similar, the embodiments of the present application will not elaborate on the determination methods of the efficiencies of other power segments here.

[0072] Taking the fixed step size as 0.1 kW, Pmod as 40 kW, the efficiency of the first power segment from 0 to 0.1 kW as η_0.1, the efficiency of the second power segment from 0.1 kW to 0.2 kW as η_0.2, the efficiency of the third power segment from 0.2 kW to 0.3 kW as η_0.3... and the efficiency of the 400th power segment from 39.9 kW to 40 kW as η_40 as an example, the efficiency characteristic data of the power module can be seen in Table 2 below.

[0073] Table 2

[0074] Power range Efficiency 0 to 0.1 kW η_0.1 0.1 kW to 0.2 kW η_0.2 0.2 kW to 3 kW η_0.3 …… …… 39.9 kW to 40 kW η_40

[0075] Since the determination methods of the efficiencies corresponding to each power segment in Table 2 are similar to those of Table 1 above, the embodiments of the present application will not elaborate on them here.

[0076] Step 202: Determine the number of candidate starting modules and the remaining required power based on the charging required power and the first power.

[0077] Among them, the number of candidate starting modules is the number of power modules used to output the first power.

[0078] The number of candidate starting modules, denoted as N, can be greater than, equal to, or less than the number of available modules M. The embodiments of the present application do not limit the size of N.

[0079] The remaining required power, denoted as Prem, can be the power in Pcar_need except for the total power output by N power modules operating at Pmod_max. That is, Prem = Pcar_need - N * Pmod_max.

[0080] Exemplarily, referring to Figure 1 As shown, the main control chip 102 can perform a division operation on Pcar_need and Pmod_max, and use the obtained quotient as N, and perform a remainder operation on Pcar_need and Pmod_max, and use the obtained remainder as Prem.

[0081] Step 203: Determine the number of target starting modules and the target power corresponding to each starting module based on the number of candidate starting modules, the number of available modules, the remaining required power, the first power, and the second power.

[0082] Exemplarily, the starting module can be the available power module used for starting among the M available power modules. The number of target starting modules can be the number of available power modules used for starting among the M available power modules, and is less than or equal to M.

[0083] In some examples, referring to Figure 1 As shown, the main control chip 102 can determine the number of target starting modules and the target power corresponding to each starting module according to the size relationship between N, M, Prem, Pmod_max, and Pmod.

[0084] Step 204: Control each starting module to output the corresponding target power to charge the target device.

[0085] Referring to Figure 1 As shown, the main control chip 102 can transmit the corresponding power control signal to the starting module to control the corresponding starting module to output the corresponding target power to the target device to charge the target device. In some examples, different target powers can correspond to different power control signals.

[0086] The charging control method of the charging pile provided by the embodiment of the present application can control the maximum number of power modules to work at the highest efficiency point by introducing the first power representing the highest efficiency output of the power module and determining the candidate start-up module quantity and the remaining required power based on the charging required power and the first power. Furthermore, based on the candidate start-up module quantity, the available module quantity, the remaining required power, the first power, and the second power, the target start-up module quantity that meets the charging scenario and the target power corresponding to each start-up module can be determined, so as to achieve high-efficiency charging of the target device, save energy. At the same time, the aging speed of the power module is reduced to a certain extent, and the reliability of the charging pile is improved.

[0087] As Figure 4 shown, based on the above Figure 2 shown embodiment, step 203 determines the target start-up module quantity and the target power corresponding to each start-up module based on the candidate start-up module quantity, the available module quantity, the remaining required power, the first power, and the second power, and may include the following steps 2031 and 2032.

[0088] Step 2031, when the candidate start-up module quantity is greater than or equal to 1 and less than the available module quantity, determine the power margin of a single power module based on the first power and the second power.

[0089] The power margin may be the difference between Pmod and Pmod_max of the power module, denoted as (Pmod - Pmod_max), and may represent the additional power that the power module can bear on the premise of maintaining high efficiency. In some examples, if Pmod_max = 60%Pmod, the power margin is 40%Pmod.

[0090] Taking the candidate drive module quantity as N as an example, as Figure 1 shown, the main control chip 102 may first judge the size relationship between N and M. When it is determined that N is greater than or equal to 1 and less than M, calculate the difference between Pmod and Pmod_max to obtain (Pmod - Pmod_max) of a single power module.

[0091] Step 2032, determine the target start-up module quantity and the target power corresponding to each start-up module based on the size relationship between the remaining required power and the power margin, the remaining required power, and the first power.

[0092] Exemplarily, in order to ensure that as many start-up modules as possible operate at the highest efficiency (operating at Pmod_max) point, as Figure 1As shown, after determining that N is greater than or equal to 1 and less than M, the main control chip 102 can first make (N - 1) startup modules operate at the Pmod_max point, and then determine whether to start 1 or 2 available power modules based on the size relationship between Prem and (Pmod - Pmod_max) (starting 1 available power module corresponds to the number of target startup modules being N, and starting 2 available power modules corresponds to the number of target startup modules being N + 1), and make the total output power of the 1 or 2 startup modules be (Pmod_max + Prem), so as to meet the required charging demand power.

[0093] In the charging control method of the charging pile provided by the embodiment of the present application, since the power margin can represent the additional power that the power module can bear on the premise of maintaining high efficiency, therefore, when the number of candidate startup modules is less than the number of available modules, based on the size relationship between the remaining demand power and the power margin, and the remaining demand power and the first power, the optimal number of target startup modules and the target power corresponding to each startup module can be determined.

[0094] As Figure 5 shown, on the basis of the above Figure 4 shown embodiment, step 2032 determines the number of target startup modules and the target power corresponding to each startup module based on the size relationship between the remaining demand power and the power margin, and the remaining demand power and the first power, and may include the following steps 501 and step 502.

[0095] Step 501: When the remaining demand power does not exceed the power margin, take N as the number of target startup modules; take the first power as the target power corresponding to N - 1 startup modules; take the sum of the first power and the remaining demand power as the target power corresponding to the remaining 1 startup module.

[0096] Wherein, N is the number of candidate startup modules.

[0097] As Figure 3 shown, the power module has a higher efficiency when operating at power point B and power point A, that is, the power module has a higher efficiency when the output power is between Pmod_max and Pmod, and the output power is Prem, that is, the efficiency at power point C when operating at a load rate of Prem or Pmod is lower. If Prem does not exceed (Pmod - Pmod_max), and Pmod_max + Prem is between Pmod_max and Pmod, then in order to make as many power modules work at the maximum efficiency point, N available power modules can be started, that is, determine N as the number of target startup modules, and control N - 1 startup modules to operate at Pmod_max; controlling the remaining 1 startup module to operate at Pmod_max + Prem is the optimal charging control scheme, which can maximize the charging efficiency.

[0098] Step 502: When the remaining required power is greater than the power margin, take N + 1 as the number of starting modules; take the first power as the target power corresponding to N - 1 starting modules; determine the target adjustment value, take the difference between the first power and the target adjustment value as the target power corresponding to the Nth starting module, and take the sum of the remaining required power and the target adjustment value as the target power corresponding to the (N + 1)th starting module.

[0099] In some embodiments of the present application, determining the target adjustment value may include: based on the remaining required power and multiple first adjustment values, determining the first adjustment power corresponding to each first adjustment value and the first efficiency corresponding to the first adjustment power; based on the first power and multiple first adjustment values, determining the second adjustment power corresponding to each first adjustment value and the second efficiency corresponding to the second adjustment power; based on the first adjustment power and the second adjustment power corresponding to each first adjustment value, the first efficiency corresponding to the first adjustment power, and the second efficiency corresponding to the second adjustment power, determining the energy efficiency corresponding to each first adjustment value; based on the magnitude relationship between the energy efficiencies corresponding to each first adjustment value, determining the target adjustment value among multiple first adjustment values.

[0100] The multiple first adjustment values may be multiple power values with a fixed step size. Taking the fixed step size of 1 kW as an example, the multiple first adjustment values may include 0 kW, 1 kW, 2 kW, 3 kW, and 4 kW. Taking the fixed step size of 0.5 kW as an example, the multiple first adjustment values may include 0 kW, 0.5 kW, 1 kW, 1.5 kW, 2 kW, 2.5 kW, 3 kW, 3.5 kW, and 4 kW. Taking the fixed step size of 0.1 kW as an example, the multiple first adjustment values may include 0 kW, 0.1 kW, 0.2 kW... 4 kW. The embodiments of the present application do not limit the number and magnitude of the first adjustment values. The embodiments of the present application take the multiple first adjustment values including 0 kW, 1 kW, 2 kW, 3 kW, and 4 kW as an example for illustrative purposes.

[0101] Taking the multiple first adjustment values including 0 kW, 1 kW, 2 kW, 3 kW, and 4 kW, and the unit of Prem is also kW as an example. As Figure 1 shown, when the first adjustment value is 0 kW, the main control chip 102 may take the sum of Prem and 0 kW, that is, take Prem as the first adjustment power; when the first adjustment value is 1 kW, the main control chip 102 may take the sum of Prem and 1 kW, that is, take Prem + 1 as the first adjustment power, and so on, until the first adjustment value is 4 kW, the main control chip 102 may take the sum of Prem and 4 kW, that is, take Prem + 4 as the first adjustment power.

[0102] Taking the multiple first adjustment values including 0 kW, 0.1 kW, 0.2 kW, 0.3 kW... 4 kW, and the unit of Prem is also kW as an example. As Figure 1As shown, when the first adjustment value is 0 kW, the main control chip 102 can take the sum of Prem and 0 kW, that is, take Prem as the first adjustment power; when the first adjustment value is 0.1 kW, the main control chip 102 can take the sum of Prem and 0.1 kW, that is, take Prem + 0.1 as the first adjustment power; when the first adjustment value is 0.2 kW, the main control chip 102 can take the sum of Prem and 0.2 kW, that is, take Prem + 0.2 as the first adjustment power, and so on. Until the first adjustment value is 4 kW, the main control chip 102 can take the sum of Prem and 4 kW, that is, take Prem + 4 as the first adjustment power.

[0103] As Figure 1 shown, the main control chip 102 can read the first efficiency corresponding to each first adjustment power from the pre-stored efficiency characteristic data. Taking multiple first adjustment powers as Prem, Prem + 1, Prem + 2, Prem + 3, and Prem + 4 as examples. When the first adjustment power is Prem, the main control chip 102 can take the efficiency ηprem corresponding to Prem read from Table 1 above as the first efficiency; when the first adjustment power is Prem + 1, the main control chip 102 can take the efficiency ηprem+1 corresponding to Prem + 1 read from Table 1 above as the first efficiency, and so on. When the first adjustment power is Prem + 4, the main control chip 102 can take the efficiency ηprem+4 corresponding to Prem + 4 read from Table 1 above as the first efficiency.

[0104] Taking multiple first adjustment powers as Prem, Prem + 0.1, Prem + 0.2, Prem + 0.3... Prem + 4 as examples. When the first adjustment power is Prem, the main control chip 102 can take the efficiency η_Prem corresponding to Prem read from Table 2 above as the first efficiency; when the first adjustment power is Prem + 0.1, the main control chip 102 can take the efficiency η_(Prem+0.1) corresponding to Prem + 0.1 read from Table 2 above as the first efficiency, and so on. When the first adjustment power is Prem + 4, the main control chip 102 can take the efficiency η_(Prem+4) corresponding to Prem + 4 read from Table 2 above as the first efficiency.

[0105] Taking multiple first adjustment values including 0 kW, 1 kW, 2 kW, 3 kW, and 4 kW, and the unit of Pmod_max is also kW as an example. As Figure 1As shown, when the first adjustment value is 0 kW, the main control chip 102 can use the difference between Pmod_max and 0 kW, that is, use Pmod_max as the second adjustment power; when the first adjustment value is 1 kW, the main control chip 102 can use the difference between Pmod_max and 1 kW, that is, use Pmod_max - 1 as the second adjustment power, and so on. Until the first adjustment value is 4 kW, the main control chip 102 can use the difference between Pmod_max and 4 kW, that is, use Pmod_max - 4 as the second adjustment power.

[0106] Taking the example where multiple first adjustment values include 0 kW, 0.1 kW, 0.2 kW, 0.3 kW... 4 kW, and the unit of Pmod_max is also kW. As Figure 1 shown, when the first adjustment value is 0 kW, the main control chip 102 can use the difference between Pmod_max and 0 kW, that is, use Pmod_max as the second adjustment power; when the first adjustment value is 0.1 kW, the main control chip 102 can use the difference between Pmod_max and 0.1 kW, that is, use Pmod_max - 0.1 as the second adjustment power; when the first adjustment value is 0.2 kW, the main control chip 102 can use the difference between Pmod_max and 0.2 kW, that is, use Pmod_max - 0.2 as the second adjustment power, and so on. Until the first adjustment value is 4 kW, the main control chip 102 can use the difference between Pmod_max and 4 kW, that is, use Pmod_max - 4 as the second adjustment power.

[0107] Similarly, as Figure 1 shown, the main control chip 102 can read the second efficiency corresponding to each second adjustment power from the pre-stored efficiency characteristic data. Since the implementation method for the main control chip 102 to read the second efficiency corresponding to each second adjustment power from the pre-stored efficiency characteristic data is similar to the implementation method for reading the first efficiency corresponding to each first adjustment power from the pre-stored efficiency characteristic data, the embodiments of the present application will not elaborate herein.

[0108] Exemplarily, the energy efficiency corresponding to the first adjustment value can be the sum of the first energy efficiency and the second energy efficiency. The first energy efficiency can be the energy efficiency when the power module operates at the first adjustment power corresponding to the first adjustment value; the second energy efficiency can be the energy efficiency when the power module operates at the second adjustment power corresponding to the first adjustment value. In some examples, as Figure 1 shown, the main control chip 102 can first perform a multiplication operation on the first adjustment power corresponding to the first adjustment value and the first efficiency corresponding to this first adjustment power to obtain the first energy efficiency; then perform a multiplication operation on the second adjustment power corresponding to each first adjustment value and the second efficiency corresponding to this second adjustment power to obtain the second energy efficiency; finally, use the sum of the first energy efficiency and the second energy efficiency as the energy efficiency corresponding to the first adjustment value.

[0109] Taking the multiple first adjustment values including 0 kW, 1 kW, 2 kW, 3 kW, and 4 kW, and the energy efficiencies corresponding to the respective first adjustment values being denoted as P0, P1, P2, P3, and P4 as an example, the methods for determining P0, P0, P2, P3, and P4 can be seen in the following formulas (1) to (5).

[0110] P0 = Prem * ηprem + Pmod_max * ηpmod_max (1);

[0111] P1 = (Prem + 1) * ηprem + 1 + (Pmod_max - 1) * ηpmod_max - 1 (2);

[0112] P2 = (Prem + 2) * ηprem + 2 + (Pmod_max - 2) * ηpmod_max - 2 (3);

[0113] P3 = (Prem + 3) * ηprem + 3 + (Pmod_max - 3) * ηpmod_max - 3 (4);

[0114] P4 = (Prem + 4) * ηprem + 4 + (Pmod_max - 4) * ηpmod_max - 4 (5).

[0115] Taking the multiple first adjustment values including 0 kW, 0.1 kW, 0.2 kW, 0.3 kW... 4 kW, and the energy efficiencies corresponding to the respective first adjustment values being denoted as P_0, P_0.1, P_0.2, P_0.3... P_4 as an example, the methods for determining P_0, P_0.1, P_0.2, P_0.3... P_4 can be seen in the following formulas (6) to (45).

[0116] P_0 = Prem * η_prem + Pmod_max * η_pmod_max (6);

[0117] P_0.1 = (Prem + 0.1) * η_(Prem + 0.1) + (Pmod_max - 0.1) * η_(Pmod_max - 0.1)(7);

[0118] P_0.2 = (Prem + 0.2) * η_(Prem + 0.2) + (Pmod_max - 0.2) * η_(Pmod_max - 0.2) (8);

[0119] P_0.3 = (Prem + 0.3) * η_(Prem + 0.3) + (Pmod_max - 0.3) * η_(Pmod_max - 0.3)(9);

[0120] ……

[0121] P_4 = (Prem + 4) * η_(Prem + 4) + (Pmod_max - 4) * _(Pmod_max - 4) (45).

[0122] In some embodiments of the present application, based on the magnitude relationship between the energy efficiencies corresponding to each first adjustment value, a target adjustment value is determined among multiple first adjustment values, including: determining the maximum energy efficiency among the energy efficiencies corresponding to each first adjustment value; and taking the first adjustment value corresponding to the maximum energy efficiency as the target adjustment value.

[0123] Taking the multiple first adjustment values including 0 kW, 1 kW, 2 kW, 3 kW, and 4 kW, and the energy efficiencies corresponding to each first adjustment value being P0, P1, P2, P3, and P4 as an example. Refer to Figure 1 As shown, the main control chip 102 can compare the magnitudes of P0, P1, P2, P3, and P4. If the value of P2 is the largest, that is, it is determined that P2 is the maximum energy efficiency, and the first adjustment value 2 kW corresponding to P2 is taken as the target adjustment value, denoted as max.

[0124] Taking the multiple first adjustment values including 0 kW, 0.1 kW, 0.2 kW, 0.3 kW... 4 kW, and the energy efficiencies corresponding to each first adjustment value being P_0, P_0.1, P_0.2, P_0.3... P_4 as an example. Refer to Figure 1 As shown, the main control chip 102 can compare the magnitudes of P_0, P_0.1, P_0.2, P_0.3... P_4. If the value of P_0.9 is the largest, that is, it is determined that P_0.9 is the maximum energy efficiency, then the first adjustment value 0.9 kW corresponding to P_0.9 is taken as max.

[0125] It can be seen from the above analysis that the smaller the step size of the multiple first adjustment values, the greater the computational amount and the higher the accuracy of determining the target adjustment value based on the multiple first adjustment values, and vice versa.

[0126] Since the first adjustment power corresponding to each first adjustment value is determined based on the remaining demand power and the multiple first adjustment values, and the second adjustment power corresponding to each first adjustment value is determined based on the first power and the multiple first adjustment values, therefore, based on the first adjustment power and the second adjustment power corresponding to each first adjustment value, the first efficiency corresponding to the first adjustment power, and the second efficiency corresponding to the second adjustment power, the energy efficiency corresponding to each first adjustment value can be determined more accurately. Furthermore, based on the magnitude relationship between the energy efficiencies corresponding to each first adjustment value, a target adjustment value suitable for the maximum efficiency can be determined among the multiple first adjustment values. And when taking the first adjustment value corresponding to the maximum energy efficiency as the target adjustment value, the first adjustment value when the power module operates at the maximum efficiency can be determined.

[0127] If Prem is greater than (Pmod - Pmod_max), that is, Pmod_max + Prem is greater than Pmod, then start N + 1 available power modules, and control N - 1 starting modules to operate at Pmod_max; control the Nth starting module to operate at Pmod_max - max, and control the (N + 1)th starting module to operate at Prem + max. This is the optimal charging control scheme, which can maximize the charging efficiency.

[0128] As Figure 6 shown, based on the above Figure 2 shown embodiment, step 203 determines the target number of starting modules and the target power corresponding to each starting module based on the number of candidate starting modules, the number of available modules, the remaining required power, the first power, and the second power, and may include the following steps 2033 and 2034.

[0129] Step 2033: When the number of candidate starting modules is greater than or equal to the number of available modules, determine the module compensation quantity based on the number of available modules, the first power, and the second power.

[0130] Exemplarily, the module compensation quantity, denoted as K, may be the number of available power modules required when compensating for the underloaded power through the power margin of the available power modules.

[0131] In some embodiments of the present application, determining the module compensation quantity based on the number of available modules, the first power, and the second power may include: determining the underloaded power based on the number of available modules and the first power; determining the power margin of a single power module based on the first power and the second power; taking the quotient of the underloaded power and the power margin as the module compensation quantity. Among them, determining the underloaded power based on the number of available modules and the first power may include: obtaining the charging required power; determining the product between the number of available modules and the first power; taking the difference between the charging required power and the product as the underloaded power.

[0132] The underloaded power may be the difference between the charging required power and the total power output when all available power modules operate at the maximum efficiency point, that is, Pcar_need - M * Pmod_max. Then K = (Pcar_need - M * Pmod_max) / (Pmod - Pmod_max).

[0133] As Figure 1 shown, the main control chip 102 may calculate (Pcar_need - M * Pmod_max) / (Pmod - Pmod_max) to obtain K when determining that N is greater than M, that is, when Pcar_need cannot be satisfied when all available power modules operate at the maximum efficiency point.

[0134] Step 2034: Determine the target number of starting modules and the target power corresponding to each starting module based on the relationship between the number of module compensations and the number of available modules and the remaining required power.

[0135] As Figure 1 shown, after the main control chip 102 determines that N is greater than M, in order to ensure that as many starting modules as possible operate at the highest efficiency (operating at Pmod_max), it can determine the relationship between K and M, and determine the output power of each starting module according to the relationship between K and M and Prem to meet the charging required power.

[0136] The charging control method of the charging pile provided by the embodiment of the present application, when the number of candidate starting modules is greater than or equal to the number of available modules, that is, when the available power modules all operate at the maximum efficiency point and cannot meet the charging required power, based on the number of available modules, the first power, and the second power, it can determine the number of module compensations used to represent how many available power modules are needed to compensate for the underloaded power. Furthermore, based on the relationship between the number of module compensations and the number of available modules, the optimal target number of starting modules and the target power corresponding to each starting module can be determined.

[0137] As Figure 7 shown, on the basis of the above Figure 6 shown embodiment, step 2034 determines the target number of starting modules and the target power corresponding to each starting module based on the relationship between the number of module compensations and the number of available modules and the remaining required power, and may include the following steps 701 to step 703.

[0138] Step 701: Take M as the target number of starting modules.

[0139] Wherein, M is the number of available modules.

[0140] As Figure 1 shown, when N is greater than M, that is, when the available power modules all operate at the maximum efficiency point and still cannot meet Pcar_need, the main control chip 102 needs to start all available power modules to meet Pcar_need, that is, take M as the target number of starting modules.

[0141] Step 702: When K is greater than or equal to M, take the second power as the target power corresponding to each starting module.

[0142] Wherein, K is the number of module compensations.

[0143] It can be understood that if K is greater than or equal to M, it means that even if all available power modules operate at Pmod, the charging demand power cannot be met or can just be met. Therefore, when K is greater than or equal to M, the main control chip 102 can control all available power modules to operate at the maximum power as the optimal solution, which can output the maximum power to the target device.

[0144] Step 703: When K is less than M, take the second power as the target power corresponding to K starting modules; take the first power as the target power corresponding to M - K - 1 starting modules, and take the remaining demand power as the target power corresponding to the remaining 1 starting module.

[0145] It can be understood that if K is less than M, it means that the power margin of multiple starting modules can meet the compensation for the underloaded power. Thus, compensating the power margin for K starting modules, enabling K starting modules to operate at Pmod, controlling M - K - 1 starting modules to operate at the maximum power point, and the remaining 1 starting module to operate at Prem is the optimal charging control solution, which can maximize the charging efficiency.

[0146] Corresponding to the foregoing embodiments of the charging control method of the charging pile, the present application also provides a charging pile. As Figure 8 shown, the charging pile 80 may include multiple power modules 801 and a controller 802; the multiple power modules 801 may include starting modules 8011 with the number of target starting modules.

[0147] Among them, the controller 802 is configured to obtain the charging demand power, the number of available modules, as well as the first power and the second power of each power module; determine the number of candidate starting modules and the remaining demand power based on the charging demand power and the first power; the number of candidate starting modules is the number of power modules for outputting the first power; determine the number of target starting modules and the target power corresponding to each starting module based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power; transmit corresponding power control signals to each starting module 7011; where the number of available modules is the number of available power modules among the multiple power modules, the first power is the power when each power module outputs the highest efficiency, and the second power is the maximum power output by each power module.

[0148] Each starting module 8011 is configured to output the target power in response to the power control signal to charge the target device.

[0149] Among them, the controller 802 and the power module 801 may respectively correspond to the main control chip 102 and the power module 101 in the Figure 1 shown embodiments.

[0150] Corresponding to the embodiments of the charging control method of the foregoing charging pile, the present application also provides an embodiment of a charging control device for a charging pile. As Figure 9 shown, the charging control device 90 of the charging pile may include an acquisition module 901, a first determination module 902, a second determination module 903, and a control module 904.

[0151] Among them, the acquisition module 901 is configured to acquire a charging demand power, the number of available modules, and the first power and the second power of each power module; wherein, the number of available modules is the number of available power modules among the multiple power modules, the first power is the power when each power module outputs the highest efficiency, and the second power is the maximum power output by each power module.

[0152] The first determination module 902 is configured to determine a candidate start module number and a remaining demand power based on the charging demand power and the first power; the candidate start module number is the number of power modules for outputting the first power.

[0153] The second determination module 903 is configured to determine a target start module number and the target power corresponding to each start module based on the candidate start module number, the number of available modules, the remaining demand power, the first power, and the second power.

[0154] The control module 904 is configured to control each start module to output the corresponding target power to charge the target device.

[0155] In some embodiments of the present application, the second determination module 903 is specifically configured to, when the candidate start module number is greater than or equal to 1 and less than the number of available modules, determine the power margin of a single power module based on the first power and the second power; determine the target start module number and the target power corresponding to each start module based on the magnitude relationship between the remaining demand power and the power margin, the remaining demand power, and the first power.

[0156] In some embodiments of the present application, the second determination module 903 is specifically configured to, when the remaining demand power does not exceed the power margin, use N as the target start module number; use the first power as the target power corresponding to N - 1 start modules; use the sum of the first power and the remaining demand power as the target power corresponding to the remaining 1 start module; where N is the candidate start module number; when the remaining demand power is greater than the power margin, use N + 1 as the target start module number; use the first power as the target power corresponding to N - 1 start modules; determine the target adjustment value, use the difference between the first power and the target adjustment value as the target power corresponding to the Nth start module, and use the sum of the remaining demand power and the target adjustment value as the target power corresponding to the N + 1th start module.

[0157] In some embodiments of the present application, the second determination module 903 is specifically configured to determine, based on the remaining required power and a plurality of first adjustment values, the first adjustment power corresponding to each first adjustment value and the first efficiency corresponding to the first adjustment power; determine, based on the first power and the plurality of first adjustment values, the second adjustment power corresponding to each first adjustment value and the second efficiency corresponding to the second adjustment power; determine the energy efficiency corresponding to each first adjustment value based on the first adjustment power and the second adjustment power corresponding to each first adjustment value, the first efficiency corresponding to the first adjustment power, and the second efficiency corresponding to the second adjustment power; and determine a target adjustment value from the plurality of first adjustment values based on the magnitude relationship between the energy efficiencies corresponding to each first adjustment value.

[0158] In some embodiments of the present application, the second determination module 903 is specifically configured to determine the maximum energy efficiency among the energy efficiencies corresponding to each first adjustment value; and use the first adjustment value corresponding to the maximum energy efficiency as the target adjustment value.

[0159] In some embodiments of the present application, the second determination module 903 is further specifically configured to, when the number of candidate startup modules is greater than or equal to the number of available modules, determine the module compensation quantity based on the number of available modules, the first power, and the second power; and determine the target number of startup modules and the target power corresponding to each startup module based on the magnitude relationship between the module compensation quantity and the number of available modules and the remaining required power.

[0160] In some embodiments of the present application, the second determination module 903 is further specifically configured to determine the underload power based on the number of available modules and the first power; determine the power margin of a single power module based on the first power and the second power; and use the quotient of the underload power and the power margin as the module compensation quantity.

[0161] In some embodiments of the present application, the second determination module 903 is further specifically configured to obtain the charging required power; determine the product of the number of available modules and the first power; and use the difference between the charging required power and the product as the underload power.

[0162] In some embodiments of the present application, the second determination module 903 is further specifically configured to use M as the target number of startup modules, where M is the number of available modules; when K is greater than or equal to M, use the second power as the target power corresponding to each startup module, where K is the module compensation quantity; when K is less than M, use the second power as the target power corresponding to K startup modules; use the first power as the target power corresponding to M - K - 1 startup modules; and use the remaining required power as the target power corresponding to the remaining 1 startup module.

[0163] For the beneficial technical effects corresponding to the exemplary embodiments of the above charging control device 90 of the charging pile, reference may be made to the corresponding beneficial technical effects in the method embodiment part above, which will not be elaborated here.

[0164] Corresponding to the embodiments of the charging control method of the aforementioned charging pile, the present application also provides an embodiment of a charging device. Figure 10 The following is a schematic structural diagram of a charging device provided by an embodiment of the present application. As Figure 10 shown, the charging device 100 includes a charging pile 1001 and a charging gun 1002.

[0165] Among them, the charging pile 1001 is coupled to the charging gun 1002 and is configured to obtain the charging demand power, the number of available modules, and the first power and the second power of each power module among the multiple power modules of the charging pile when the charging pile 1001 starts charging; wherein, the number of available modules is the number of available power modules among the multiple power modules, the first power is the power when each power module outputs the highest efficiency, and the second power is the maximum power output by each power module; based on the charging demand power and the first power, determine the number of candidate starting modules and the remaining demand power; the number of candidate starting modules is the number of power modules for outputting the first power; based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power, determine the number of target starting modules and the target power corresponding to each starting module; control each starting module to transmit the corresponding target power to the charging gun 1002;

[0166] The charging gun 1002 is configured to be coupled to the target device and transmit the corresponding target power to the target device to charge the target device.

[0167] It should be noted that for the beneficial technical effects corresponding to the above exemplary embodiments of the charging device, reference can be made to the corresponding beneficial technical effects in the method embodiment part above, and details will not be repeated here.

[0168] In addition to the above methods and devices, an embodiment of the present application can also provide a computer program product, including computer program instructions, which when run by a processor cause the processor to execute the steps in the charging control method of the charging piles in various embodiments of the present application described in the method embodiment part above.

[0169] The computer program product can be written in any combination of one or more programming languages to write program code for performing the operations of the embodiments of the present application. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, executed as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0170] In addition, an embodiment of the present application may also be a computer-readable storage medium storing computer program instructions, which, when run by a processor, cause the processor to execute the steps in the charging control method of the charging pile according to various embodiments of the present application described in the method embodiment part above.

[0171] The computer-readable storage medium may adopt any combination of one or more readable media. The readable media may be a readable signal medium or a readable storage medium. The readable storage medium includes, for example but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0172] The basic principles of the present application have been described above in conjunction with specific embodiments. However, the advantages, benefits, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that they are essential for each embodiment of the present application. In addition, the specific details of the above embodiments are only for the purposes of illustration and easy understanding, rather than limitations. The above details do not limit the present application to necessarily adopt the above specific details for implementation.

[0173] Those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

[0174] Moreover, the above-described embodiments are only specific embodiments of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the present application shall be included within the protection scope of the present application.

Claims

1. A charging control method for a charging pile, the charging pile including a plurality of power modules for charging a target device; characterized in that, The method includes: Obtaining the charging demand power, the number of available modules, and the first power and the second power of each of the power modules; wherein, the number of available modules is the number of available power modules among the multiple power modules, the first power is the power when each of the power modules outputs the highest efficiency, and the second power is the maximum power output by each of the power modules; Based on the charging demand power, the first power, the number of available modules, and the second power, determining the number of target starting modules and the target power corresponding to each starting module; Controlling each of the starting modules to output the corresponding target power to charge the target device.

2. The method according to claim 1, characterized in that, The determining the number of target starting modules and the target power corresponding to each starting module based on the charging demand power, the first power, the number of available modules, and the second power includes: Based on the charging demand power and the first power, determining the number of candidate starting modules and the remaining demand power; the number of candidate starting modules is the number of power modules for outputting the first power; Based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power, determining the number of target starting modules and the target power corresponding to each starting module.

3. The method according to claim 2, characterized in that, The determining the number of target starting modules and the target power corresponding to each starting module based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power includes: When the number of candidate starting modules is greater than or equal to 1 and less than the number of available modules, determining the power margin of a single power module based on the first power and the second power; Based on the magnitude relationship between the remaining demand power and the power margin, the remaining demand power, and the first power, determining the number of target starting modules and the target power corresponding to each starting module.

4. The method according to claim 3, characterized in that, The determining the number of target starting modules and the target power corresponding to each starting module based on the magnitude relationship between the remaining demand power and the power margin, the remaining demand power, and the first power includes: When the remaining demand power does not exceed the power margin, taking N as the number of target starting modules; taking the first power as the target power corresponding to N - 1 of the starting modules; taking the sum of the first power and the remaining demand power as the target power corresponding to the remaining 1 starting module; where N is the number of candidate starting modules; When the remaining demand power is greater than the power margin, taking N + 1 as the number of target starting modules; taking the first power as the target power corresponding to N - 1 starting modules; determining a target adjustment value, taking the difference between the first power and the target adjustment value as the target power corresponding to the Nth starting module, and taking the sum of the remaining demand power and the target adjustment value as the target power corresponding to the (N + 1)th starting module.

5. The method according to claim 4, wherein The determining the target adjustment value includes: Based on the remaining required power and a plurality of first adjustment values, determine the first adjustment power corresponding to each of the first adjustment values and the first efficiency corresponding to the first adjustment power; Based on the first power and the plurality of first adjustment values, determine the second adjustment power corresponding to each of the first adjustment values and the second efficiency corresponding to the second adjustment power; Based on the first adjustment power and the second adjustment power corresponding to each of the first adjustment values, the first efficiency corresponding to the first adjustment power, and the second efficiency corresponding to the second adjustment power, determine the energy efficiency corresponding to each of the first adjustment values; Based on the magnitude relationship between the energy efficiencies corresponding to each of the first adjustment values, determine the target adjustment value among the plurality of first adjustment values.

6. The method according to claim 5, wherein The determining the target adjustment value among the plurality of first adjustment values based on the magnitude relationship between the energy efficiencies corresponding to each of the first adjustment values includes: Determine the maximum energy efficiency among the energy efficiencies corresponding to each of the first adjustment values; Take the first adjustment value corresponding to the maximum energy efficiency as the target adjustment value.

7. The method according to claim 2, wherein The determining the target number of starting modules and the target power corresponding to each starting module based on the number of candidate starting modules, the number of available modules, the remaining required power, the first power, and the second power includes: When the number of candidate starting modules is greater than or equal to the number of available modules, determine the module compensation quantity based on the number of available modules, the first power, and the second power; Based on the magnitude relationship between the module compensation quantity and the number of available modules and the remaining required power, determine the target number of starting modules and the target power corresponding to each starting module.

8. The method according to claim 7, wherein The determining the module compensation quantity based on the number of available modules, the first power, and the second power includes: Based on the number of available modules and the first power, determine the underload power; the underload power is the difference between the charging required power and the total output power when each available power module operates at the highest efficiency point; Based on the first power and the second power, determine the power margin of a single power module; Take the quotient of the underload power and the power margin as the module compensation quantity.

9. The method according to claim 8, characterized in that, The determining the underload power based on the number of available modules and the first power includes: Obtain the charging required power; Determine the product of the number of available modules and the first power; Take the difference between the charging required power and the product as the underload power.

10. The method according to claim 7, wherein The determining the target number of starting modules and the target power corresponding to each starting module based on the magnitude relationship between the module compensation quantity and the number of available modules and the remaining required power includes: Take M as the target number of starting modules; where M is the number of available modules; When K is greater than or equal to M, take the second power as the target power corresponding to each starting module; where K is the module compensation quantity; When K is less than M, take the second power as the target power corresponding to K of the starting modules; take the first power as the target power corresponding to M - K - 1 of the starting modules, and take the remaining required power as the target power corresponding to the remaining 1 starting module.

11. A charging pile, characterized in that, The charging pile includes: a controller and a plurality of power modules, and the controller is coupled to the plurality of power modules; The controller is configured to execute the method according to any one of claims 1-10.

12. A charging device, characterized in that, Comprising: A charging pile and a charging gun, the charging pile is coupled to the charging gun, and the charging gun is used to be coupled to a target device; the charging pile includes a controller and a plurality of power modules, and the controller is coupled to the plurality of power modules; the controller is configured to execute the method according to any one of claims 1-10.

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