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

Abstract

The application provides a charging control method of a charging pile, the charging pile and a charging device. The method comprises the following steps: acquiring a charging demand power, a number of available modules, and a first power and a second power of each power module; determining a number of candidate starting modules and a residual demand power based on the charging demand power and the first power; the number of candidate starting modules is the number of power modules used for outputting the first power; determining a target number of starting modules and a target power corresponding to each starting module based on the number of candidate starting modules, the number of available modules, the residual demand power, the first power and the second power; and controlling each starting module to output the corresponding target power to charge a target device. The application takes the first power output by the power module at the highest efficiency as the basis for efficiency optimization, controls the maximum number of power modules to work at the highest efficiency point, and can realize efficient charging of the target device, thereby saving energy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging piles, and in particular to a charging control method and device for a charging pile, a charging pile, a charging device and a storage medium. BACKGROUND

[0002] With the popularity of electric vehicles, the efficiency and reliability of charging piles have become the key to technological development. Existing charging piles are usually composed 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, the existing charging control scheme usually controls some power modules to output maximum power, and the remaining power modules supplement the remaining demand power. However, the efficiency of the power modules when outputting maximum power is usually lower than the highest efficiency, resulting in low overall efficiency of the charging pile and large energy loss. Moreover, the power modules that output maximum power for a long time may accelerate aging due to excessive thermal load, affecting the reliability of the charging pile. SUMMARY

[0003] The embodiments of the present application provide a charging control method for a charging pile, a charging pile and a charging device, which can improve the reliability of the charging control method, prolong the service life of each power module in the charging pile and reduce the aging speed of the modules.

[0004] To achieve the above-mentioned purpose, the embodiments of the present application adopt the following technical solutions:

[0005] In a first aspect, the embodiments of the present application provide a charging control method for a charging pile, the charging pile comprising multiple power modules; the power modules are used for charging a target device; the method comprises: obtaining charging demand power, a number of available modules, and first power and second power of each power module; wherein the number of available modules is the number of available power modules in the multiple power modules, the first power is the power of each power module when outputting 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, the number of available modules and the second power, determining a target number of startup modules and a target power corresponding to each startup module; and controlling each startup module to output the corresponding target power to charge the target device.

[0006] Based on the present scheme, 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 of each power module when outputting 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 work at the highest efficiency point, the target number of startup modules and the target power corresponding to each startup module that meet the charging scenario are determined, high-efficiency charging of the target device is realized, and energy is saved. At the same time, the aging speed of the power modules is reduced to a certain extent, 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 of each starting module based on the charging demand power and the first power, the available number of modules, and the second power comprises:

[0008] determining a candidate number of starting modules and a residual demand power based on the charging demand power and the first power, the candidate number of starting modules being the number of power modules used to output the first power;

[0009] determining the target number of starting modules and the target power of each starting module based on the candidate number of starting modules, the available number of modules, the residual demand power, the first power, and the second power.

[0010] Determining the candidate number of starting modules and the residual demand power based on the charging demand power and the first power can control the maximum number of power modules to work at the highest efficiency point. Furthermore, based on the candidate number of starting modules, the available number of modules, the residual demand power, the first power, and the second power, the target number of starting modules and the target power of each starting module that meet the charging scenario can be determined, and efficient charging of the target device can be achieved.

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

[0012] Based on the present solution, since the power margin can represent the additional power that the power module can bear under the premise of maintaining high efficiency, by determining the optimal target number of starting modules and the target power of each starting module based on the size relationship between the residual demand power and the power margin, the residual demand power, and the first power when the candidate number of starting modules is less than the available number of modules.

[0013] In some embodiments of the present application, the target starting module quantity and the target power corresponding to each starting module are determined based on the relationship between the residual demand power and the size of the power margin, the residual demand power and the first power, including: when the residual demand power is not more than the power margin, taking N as the target starting module quantity; taking the first power as the target power corresponding to N-1 starting modules; taking the sum of the first power and the residual demand power as the target power corresponding to the remaining 1 starting module; wherein N is the candidate starting module quantity; when the residual demand power is greater than the power margin, taking N+1 as the target starting module quantity; 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 residual demand power and the target adjustment value as the target power corresponding to the N+1 starting module.

[0014] Based on the present scheme, when the residual demand power is not more than the power margin, i.e. the sum of the first power and the residual demand power is less than the second power, the power module can be kept at a high-efficiency operating point, therefore, when N is the candidate starting module quantity, taking the first power as the target power corresponding to N-1 starting modules; taking the sum of the first power and the residual demand power as the target power corresponding to the remaining 1 starting module is the optimal charging control scheme, which can maximize the charging efficiency. When the residual demand power is greater than the power margin, i.e. the sum of the first power and the residual demand power is greater than the second power, N+1 available power modules are started, and under the condition of selecting a suitable target adjustment value, the first power is taken as the target power corresponding to N-1 starting modules; the target adjustment value is determined, the difference between the first power and the target adjustment value is taken as the target power corresponding to the Nth starting module, and the sum of the residual demand power and the target adjustment value is taken as the target power corresponding to the N+1 starting module is the optimal charging control scheme, which can maximize the charging efficiency.

[0015] In some embodiments of the present application, the target adjustment value is determined, including: based on the residual demand power and a plurality of 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 a plurality of 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 size relationship between the energy efficiency corresponding to each first adjustment value, determining the target adjustment value in the plurality of first adjustment values.

[0016] Based on the scheme, since the first adjustment power corresponding to each first adjustment value is determined based on the residual demand power and the plurality of first adjustment values, and the second adjustment power corresponding to each first adjustment value is determined based on the first power and the plurality of first adjustment values, the energy efficiency corresponding to each first adjustment value can be determined more accurately 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. Further, based on the size 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 from the plurality of first adjustment values.

[0017] In some embodiments of the present application, based on the size relationship between the energy efficiencies corresponding to each first adjustment value, the target adjustment value is determined from the plurality of first adjustment values, including: determining the maximum energy efficiency from 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 the scheme, by taking the first adjustment value corresponding to the maximum energy efficiency from 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, based on the candidate start module quantity, the available module quantity, the residual demand power, the first power and the second power, the target start module quantity and the target power corresponding to each start module are determined, including: when the candidate start module quantity is greater than or equal to the available module quantity, determining a module compensation quantity based on the available module quantity, the first power and the second power; and determining the target start module quantity and the target power corresponding to each start module based on the size relationship between the module compensation quantity and the available module quantity and the residual demand power.

[0020] Based on the scheme, when the candidate start module quantity is greater than or equal to the available module quantity, i.e., when the available power modules cannot meet the charging demand power when all the available power modules operate at the maximum efficiency point, the module compensation quantity representing how many available power modules are needed to compensate for the underload power (the difference between the charging demand power and the total power output when all the available power modules operate at the maximum efficiency point) can be determined based on the available module quantity, the first power and the second power. Further, the optimal target start module quantity and the target power corresponding to each start module can be determined based on the size relationship between the module compensation quantity and the available module quantity.

[0021] In some embodiments of the present application, the module compensation quantity is determined based on the available module quantity, the first power and the second power, comprising: determining an 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 power output when all available power modules operate at the maximum efficiency point; determining a power margin of a single power module based on the first power and the second power; taking the quotient of the underload power and the power margin as the module compensation quantity.

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

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

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

[0025] In some embodiments of the present application, the target starting module quantity and the target power corresponding to each starting module are determined based on the size relationship between the module compensation quantity and the available module quantity and the remaining demand power, comprising: taking M as the target starting module quantity; wherein 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; wherein 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 starting modules, and taking the remaining demand power as the target power corresponding to the remaining 1 starting module.

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

[0027] In a second aspect, the embodiments of the present application provide a charging pile, comprising: a controller and a plurality of power modules; the controller is coupled with the plurality of power modules; the controller is configured to execute the charging control method of the charging pile provided in the first aspect.

[0028] In a third aspect, the embodiments of the present application provide a charging device, comprising: a charging pile and a charging gun; the charging pile is coupled with the charging gun, and the charging gun is configured to be coupled with a target device; the charging pile comprises a controller and a plurality of power modules, and the controller is coupled with the plurality of power modules; the controller is configured to execute the charging control method of the charging pile provided in the first aspect.

[0029] In a fourth aspect, the embodiments of the present application provide a charging control device of a charging pile, comprising:

[0030] The acquisition module is 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 in the plurality of power modules, the first power is the power output when each power module outputs the highest efficiency, and the second power is the maximum power output by each power module;

[0031] The first determination module is configured to 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 used to output the first power;

[0032] The second determination module is configured to 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;

[0033] The control module is configured to control each starting 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, which stores a computer program for executing the charging control method of the charging pile provided in the first aspect.

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

[0036] Figure 1 A structural schematic diagram of a charging pile provided in an embodiment of the present application.

[0037] Figure 2 A flowchart of a charging control method of a charging pile provided in an embodiment of the present application.

[0038] Figure 3 An efficiency curve diagram of a power module provided in an embodiment of the present application.

[0039] Figure 4 A flowchart of another charging control method of a charging pile provided in an embodiment of the present application.

[0040] Figure 5 A flowchart of still another charging control method of a charging pile provided in an embodiment of the present application.

[0041] Figure 6 A flowchart of still another charging control method of a charging pile provided in an embodiment of the present application.

[0042] Figure 7 A flowchart of still another charging control method of a charging pile provided in an embodiment of the present application.

[0043] Figure 8 A structural schematic diagram of a charging pile provided in an embodiment of the present application.

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

[0045] Figure 10 A structural schematic diagram of a charging device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In order to clearly describe the technical solutions in the embodiments of the present application, the first, second, etc. descriptions in the embodiments of the present application are only used for indicating and distinguishing the description objects, and do not have the order, nor represent the special limitation of the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0047] The related technical terms in the embodiments of the present application will be described below:

[0048] A computing device is an electronic device used for performing computing tasks. The computing device can include a personal computer, a server, an embedded computer, a supercomputer, etc. In the present application, the server is taken as an example for illustrative description. The server in the present application can be a stand-alone physical server, a server cluster or a distributed system composed of multiple physical servers, or a cloud server providing cloud services, cloud databases, cloud computing, cloud functions, cloud storage, cloud communication, middleware services, domain name services, security services, content delivery networks (CDN), and basic cloud computing services such as large databases and artificial intelligence platforms. When the server is a server cluster or a distributed system composed of multiple physical servers, the multiple physical servers can form a block chain, and each physical server is a node on the block chain. The physical types of the server can include cabinet servers, rack servers, high-density servers, graphic processing unit (GPU) servers, tower servers, and blade servers, artificial intelligence (AI) servers, etc. The type of the server is not limited in the embodiments of the present application.

[0049] A charging pile is a core energy supplementing device of an electric vehicle (EV), and its function is to safely and efficiently transmit power grid power to the battery of an electric vehicle. The charging pile can include a direct current charging pile and an alternating current charging pile according to the current type. According to the installation mode, the charging pile can include a wall-mounted type, a columnar type, and a mobile type.

[0050] A power module is mainly used for power conversion, power conversion, and safety protection, and 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), which can be determined according to the power level, functional complexity, and intelligentization requirement of the charging pile.

[0052] The charging control method of the charging pile provided in the embodiments of the present application can take the power output at the highest efficiency of the power module as the basis for efficiency optimization by obtaining the charging demand power, the number of available modules, and the first power and the second power of each power module. At the same time, the number of candidate starting modules and the remaining demand power can be determined based on the charging demand power and the first power, so that the maximum number of power modules can work at the highest efficiency point. Further, the target number of starting modules and the target power corresponding to each starting module that meet the charging scenario can be determined based on the number of candidate starting modules, the number of available modules, the remaining demand power, the first power, and the second power, so as to realize efficient charging of the target device and 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.

[0053] The charging control method provided in the embodiments of the present application can be applied to the main control chip as shown in Figure 1 . Figure 1 A structural diagram of a charging pile is provided in the embodiments of the present application. As shown in Figure 1 , the charging pile 10 can include a plurality of power modules 101 and a main control chip 102 for controlling the plurality of power modules 101. The main control chip 102 is coupled to each power module 101 and is configured to transmit a power control signal to each power module. The charging pile 10 can be a charging pile. The number 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. The maximum power of the power module 101, also referred to 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 embodiments of the present application do not limit the size of Ntot, and the following embodiments are exemplarily described with Ntot being 24, i.e., the charging pile 10 includes 24 power modules 101.

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

[0055] The charging piles described in this application are intended to more clearly illustrate the technical solutions of this application, and do not constitute a limitation on the technical solutions provided in this application. As those skilled in the art will know, with the evolution of system architecture, the technical solutions provided in this application are also applicable to similar technical problems.

[0056] Figure 2 This is a flowchart illustrating a charging control method for a charging pile provided in an embodiment of this application. Figure 2 As shown, the charging control method of this charging pile can be applied to, for example... Figure 1 The main control chip 102 shown. The charging control method of this charging pile may include the following steps 201 to 204.

[0057] Step 201: Obtain the charging power requirement, the number of available modules, and the first and second power of each power module.

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

[0059] For example, the charging power demand, denoted as Pcar_need, refers to the power input requested in real time by the electric vehicle's battery management system from the charging station during the charging process, and can be determined by both the battery capacity and the charging technology type. In some examples, if the battery capacity is 60 kWh and the charging technology type is fast charging, then the charging power demand Pcar_need can be 170 kW. In other examples, if the battery capacity is 100 kWh and the charging technology type is fast charging, then the charging power demand Pcar_need can be 500 kW. This application does not limit the magnitude of the charging power demand.

[0060] Available power modules are those power modules that are idle, i.e., power modules other than those that are in operation. The number of available modules, denoted as M, can be less than or equal to the total number of power modules Ntot in the charging pile, and can be determined based on the number of power modules already in use in the charging pile. For example... Figure 1 As shown, if the charging pile 10 includes 24 power modules 101, and 10 power modules 101 are in operation, then 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 a power-efficiency correspondence of the power module. The power-efficiency correspondence can correspond to an efficiency curve in a data sheet of the power module. Figure 3 An efficiency curve of a power module is provided for an embodiment of the present application. As shown in Figure 3 , the horizontal axis represents the load rate, and the vertical axis represents the efficiency. Pmod can be the power of the 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 further correspond to different Pmod. The type of the power module is not limited in the embodiments of the present application, 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 size of Pmod is not limited in the embodiments of the present application, and the embodiments of the present application are exemplarily described by taking Pmod as 40kW.

[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 shown in Figure 3 . 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% Pmod. Taking Pmod as 40kW as an example, Pmod_max can be 24kW. In other examples, if Pmod_max is 70% Pmod and Pmod is 40kW, Pmod_max can be 28kW. The size of Pmod_max is not limited in the embodiments of the present application, and the embodiments of the present application are exemplarily described by taking Pmod_max as 24kW.

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

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

[0067] Table 1

[0068]

[0069]

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

[0071] Since the determination manner of the efficiency corresponding to each power segment in Table 1 is similar, the embodiments of the present application do not repeat the determination manner of the efficiency of other power segments here.

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

[0073] Table 2

[0074] Power segment 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 manner of the efficiency corresponding to each power segment in Table 2 is similar to the determination manner of the efficiency corresponding to each power segment in Table 1 described above, the embodiments of the present application do not repeat the determination manner here.

[0076] Step 202, determining the candidate starting module quantity and the residual demand power based on the charging demand power and the first power.

[0077] The candidate starting module quantity is the quantity of the power modules used to output the first power.

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

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

[0080] Exemplarily, referring to FIG. 2, the main control chip 102 can perform division operation on Pcar_need and Pmod_max, and take the quotient as N, and perform remainder operation on Pcar_need and Pmod_max, and take the remainder as Prem. Figure 1

[0081] Step 203, determining the target starting module quantity and the target power corresponding to each starting module based on the candidate starting module quantity, the available module quantity, the residual demand power, the first power, and the second power.

[0082] Exemplarily, the starting module can be an available power module that is started to be used among the M available power modules. The target starting module quantity can be the quantity of the available power modules that are started to be used among the M available power modules, and is less than or equal to M.

[0083] In some examples, referring to FIG. 3, the main control chip 102 can determine the target starting module quantity and the target power corresponding to each starting module according to the size relationship among N, M, Prem, Pmod_max, and Pmod. Figure 1

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

[0085] Referring to FIG. 4, 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. Figure 1

[0086] ​​​The charging control method of the charging pile provided in the embodiments 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 of the power module output and determining the candidate start module number and the remaining demand power based on the charging demand power and the first power. Further, the target start module number and the target power corresponding to each start module that meet the charging scenario can be determined based on the candidate start module number, the available module number, the remaining demand power, the first power and the second power, so as to realize efficient charging of the target device and save energy. At the same time, the power module aging speed is reduced to a certain extent, and the reliability of the charging pile is improved.

[0087] As shown in the above Figure 4 embodiments, based on the above Figure 2 embodiments, step 203 determines the target start module number and the target power corresponding to each start module based on the candidate start module number, the available module number, the remaining demand power, the first power and the second power, which can include the following steps 2031 and 2032.

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

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

[0090] For example, the candidate driving module number is N, as shown in the above Figure 1 , the main control chip 102 can first determine the size relationship between N and M, and when it is determined that N is greater than or equal to 1 and less than M, the difference between Pmod and Pmod_max is calculated to obtain (Pmod-Pmod_max) of a single power module.

[0091] Step 2032, the target start module number and the target power corresponding to each start module are determined based on the size relationship between the remaining demand power and the power margin, the remaining demand power and the first power.

[0092] Exemplarily, in order to ensure that as many start modules as possible operate at the highest efficiency (operate at Pmod_max) point, as shown in the above Figure 1As shown, after determining that N is greater than or equal to 1 and less than M, the main control chip 102 prioritizes (N-1) startup modules to run at the Pmod_max point. Then, based on the relationship between Prem and (Pmod-Pmod_max), it determines to start one or two more available power modules (the number of target startup modules corresponding to starting one more available power module is N, and the number of target startup modules corresponding to starting two more available power modules is N+1), and makes the total output power of the one or two startup modules (Pmod_max+Prem) so as to meet the charging power requirement.

[0093] The charging control method for charging piles provided in this application embodiment can determine the optimal number of target starting modules and the target power corresponding to each starting module by considering the relationship between the remaining required power and the power margin, the remaining required power and the first power, when the number of candidate starting modules is less than the number of available modules.

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

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

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

[0097] like Figure 3 As shown, the power module operates more efficiently at power points B and A, meaning its output power is between Pmod_max and Pmod. Its efficiency is lower at power point C, where the output power is Prem and the load rate is either Prem or Pmod. If Prem does not exceed (Pmod - Pmod_max), and Pmod_max + Prem is between Pmod_max and Pmod, then to maximize the efficiency of as many power modules as possible, N available power modules can be activated. This means N is the target number of activated modules, and N-1 activated modules are controlled to operate at Pmod_max. Controlling the remaining 1 activated module to operate at Pmod_max + Prem is the optimal charging control scheme, maximizing charging efficiency.

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

[0099] In some embodiments of this application, determining the target adjustment value may include: determining a first adjustment power corresponding to each first adjustment value and a first efficiency corresponding to the first adjustment power based on the remaining demand power and multiple first adjustment values; determining a second adjustment power corresponding to each first adjustment value and a second efficiency corresponding to the second adjustment power based on the first power and multiple first adjustment values; determining the energy efficiency corresponding to each first adjustment value based on the first adjustment power and second adjustment power, the first efficiency corresponding to the first adjustment power, and the second efficiency corresponding to the second adjustment power; and 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.

[0100] The multiple first adjustment values ​​can be multiple power values ​​with fixed step sizes. Taking a fixed step size of 1kW as an example, the multiple first adjustment values ​​can include 0kW, 1kW, 2kW, 3kW, and 4kW. Taking a fixed step size of 0.5kW as an example, the multiple first adjustment values ​​can include 0kW, 0.5kW, 1kW, 1.5kW, 2kW, 2.5kW, 3kW, 3.5kW, and 4kW. Taking a fixed step size of 0.1kW as an example, the multiple first adjustment values ​​can include 0kW, 0.1kW, 0.2kW...4kW. This application does not limit the number or size of the first adjustment values. This application uses multiple first adjustment values ​​including 0kW, 1kW, 2kW, 3kW, and 4kW as an example for illustrative purposes.

[0101] Taking multiple first adjustment values ​​including 0kW, 1kW, 2kW, 3kW, and 4kW as an example, where the unit of Prem is also kW. Figure 1 As shown, when the first adjustment value is 0kW, the main control chip 102 can use the sum of Prem and 0kW as the first adjustment power; when the first adjustment value is 1kW, the main control chip 102 can use the sum of Prem and 1kW as the first adjustment power, and so on, until the first adjustment value is 4kW, at which point the main control chip 102 can use the sum of Prem and 4kW as the first adjustment power.

[0102] Taking multiple initial adjustment values ​​including 0kW, 0.1kW, 0.2kW, 0.3kW...4kW as an example, where the unit of Prem is also kW. Figure 1As shown, when the first adjustment value is 0kW, the main control chip 102 can use the sum of Prem and 0kW as the first adjustment power; when the first adjustment value is 0.1kW, the main control chip 102 can use the sum of Prem and 0.1kW as the first adjustment power; when the first adjustment value is 0.2kW, the main control chip 102 can use the sum of Prem and 0.2kW as the first adjustment power, and so on, until the first adjustment value is 4kW, at which point the main control chip 102 can use the sum of Prem and 4kW as the first adjustment power.

[0103] like Figure 1 As 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 an example: When the first adjustment power is Prem, the main control chip 102 can use 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 use 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 use the efficiency ηprem+4 corresponding to Prem+4 read from Table 1 above as the first efficiency.

[0104] Taking multiple first adjustment powers, Prem, Prem+0.1, Prem+0.2, Prem+0.3...Prem+4, as an example. When the first adjustment power is Prem, the main control chip 102 can use 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 use 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 use 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 0kW, 1kW, 2kW, 3kW, and 4kW as an example, where the unit of Pmod_max is also kW. Figure 1As shown, when the first adjustment value is 0kW, the main control chip 102 can use the difference between Pmod_max and 0kW, i.e., Pmod_max, as the second adjustment power; when the first adjustment value is 1kW, the main control chip 102 can use the difference between Pmod_max and 1kW, i.e., Pmod_max-1, as the second adjustment power, and so on, until the first adjustment value is 4kW, at which point the main control chip 102 can use the difference between Pmod_max and 4kW, i.e., Pmod_max-4, as the second adjustment power.

[0106] Taking an example where multiple initial adjustment values ​​include 0kW, 0.1kW, 0.2kW, 0.3kW...4kW, and Pmod_max is also in kW. Figure 1 As shown, when the first adjustment value is 0kW, the main control chip 102 can use the difference between Pmod_max and 0kW, i.e., Pmod_max, as the second adjustment power; when the first adjustment value is 0.1kW, the main control chip 102 can use the difference between Pmod_max and 0.1kW, i.e., Pmod_max-0.1, as the second adjustment power; when the first adjustment value is 0.2kW, the main control chip 102 can use the difference between Pmod_max and 0.2kW, i.e., Pmod_max-0.2, as the second adjustment power, and so on, until the first adjustment value is 4kW, at which point the main control chip 102 can use the difference between Pmod_max and 4kW, i.e., Pmod_max-4, as the second adjustment power.

[0107] Similarly, such as Figure 1 As 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 of the main control chip 102 reading the second efficiency corresponding to each second adjustment power from the pre-stored efficiency characteristic data is similar to the implementation method of reading the first efficiency corresponding to each first adjustment power from the pre-stored efficiency characteristic data, it will not be described again in this embodiment.

[0108] For example, 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 of the power module operating at the first adjusted power corresponding to the first adjustment value; the second energy efficiency can be the energy efficiency of the power module operating at the second adjusted power corresponding to the first adjustment value. In some examples, such as Figure 1 As 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 the 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 the second adjustment power to obtain the second energy efficiency; finally, the sum of the first energy efficiency and the second energy efficiency is taken as the energy efficiency corresponding to the first adjustment value.

[0109] With the plurality of first adjustment values including 0kW, 1kW, 2kW, 3kW and 4kW, the energy efficiency corresponding to each first adjustment value is denoted as P0, P1, P2, P3 and P4 respectively, the determination of P0, P1, P2, P3 and P4 can refer to the following formulas (1) to (5).

[0110] P0 = Prem * η prem + Pmod max * η pmod max (1) ;

[0111] P1 = (Prem + 1) * η prem + 1 + (Pmod max - 1) * η pmod max - 1 (2) ;

[0112] P2 = (Prem + 2) * η prem + 2 + (Pmod max - 2) * η pmod max - 2 (3) ;

[0113] P3 = (Prem + 3) * η prem + 3 + (Pmod max - 3) * η pmod max - 3 (4) ;

[0114] P4 = (Prem + 4) * η prem + 4 + (Pmod max - 4) * η pmod max - 4 (5).

[0115] With the plurality of first adjustment values including 0kW, 0.1kW, 0.2kW, 0.3kW……4kW, the energy efficiency corresponding to each first adjustment value is denoted as P_0, P_0.1, P_0.2, P_0.3……P_4 respectively, the determination of P_0, P_0.1, P_0.2, P_0.3……P_4 can refer to 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) * η_(Pmod_max-4) (45).

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

[0123] For example, the plurality of first adjustment values include 0kW, 1kW, 2kW, 3kW and 4kW, and the energy efficiencies corresponding to the first adjustment values are P0, P1, P2, P3 and P4. As shown in FIG. 4, the main control chip 102 can compare the sizes of P0, P1, P2, P3 and P4. If the value of P2 is the largest, it is determined that P2 is the maximum energy efficiency, and the first adjustment value 2kW corresponding to P2 is taken as the target adjustment value, denoted as max. Figure 1 For example, the plurality of first adjustment values include 0kW, 0.1kW, 0.2kW, 0.3kW, …, 4kW, and the energy efficiencies corresponding to the first adjustment values are P_0, P_0.1, P_0.2, P_0.3, …, P_4. As shown in FIG. 5, the main control chip 102 can compare the sizes of P_0, P_0.1, P_0.2, P_0.3, …, P_4. If the value of P_0.9 is the largest, it is determined that P_0.9 is the maximum energy efficiency, and the first adjustment value 0.9kW corresponding to P_0.9 is taken as max.

[0124] Figure 1

[0125] From the above analysis, it can be seen that the smaller the step size of the plurality of first adjustment values, the greater the calculation amount of determining the target adjustment value based on the plurality of first adjustment values, and the higher the accuracy, and vice versa.

[0126] Since the first adjustment power corresponding to each first adjustment value is determined based on the residual demand power and the plurality of first adjustment values, and the second adjustment power corresponding to each first adjustment value is determined based on the first power and the plurality of first adjustment values, the energy efficiency corresponding to each first adjustment value can be accurately determined 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. Further, the target adjustment value that adapts to the maximum efficiency can be determined from the plurality of first adjustment values based on the size relationship between the energy efficiencies corresponding to the first adjustment values. When the first adjustment value corresponding to the maximum energy efficiency is taken as the target adjustment value, the first adjustment value at which the power module operates at the maximum efficiency can be determined.

[0127] ​​If Prem is greater than (Pmod-Pmod_max), i.e., Pmod_max+Prem is greater than Pmod, N+1 available power modules are started, and N-1 starting modules are controlled to run at Pmod_max; the Nth starting module is controlled to run at Pmod_max-max, and the N+1th starting module is controlled to run at Prem+max, which is the optimal charging control scheme, and can maximize the charging efficiency.

[0128] As shown in FIG. 1, based on the above-mentioned 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 demand power, the first power and the second power, which can include the following steps 2033 and 2034. Figure 6 Figure 2 As shown in FIG. 1, based on the above-mentioned 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 demand power, the first power and the second power, which can 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, determines the number of module compensations based on the number of available modules, the first power and the second power.

[0130] Exemplarily, the number of module compensations, denoted as K, can be the number of available power modules required when the power margin of the available power modules compensates for the underload power.

[0131] In some embodiments of the present application, determining the number of module compensations based on the number of available modules, the first power and the second power can include: determining the underload 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; and taking the quotient of the underload power and the power margin as the number of module compensations. Wherein, determining the underload power based on the number of available modules and the first power can include: obtaining the charging demand power; determining the product between the number of available modules and the first power; and taking the difference between the charging demand power and the product as the underload power.

[0132] The underload power can be the difference between the charging demand power and the total output power when all available power modules run at the maximum efficiency point, i.e., Pcar_need-M*Pmod_max. Then K=(Pcar_need-M*Pmod_max) / (Pmod-Pmod_max).

[0133] As shown in FIG. 1, the main control chip 102 can calculate (Pcar_need-M*Pmod_max) / (Pmod-Pmod_max) to obtain K when it is determined that N is greater than M, i.e., when the available power modules all run at the maximum efficiency point, Pcar_need cannot be met. Figure 1

[0134] ​​Step 2034: Based on the relationship between the number of module compensations and the number of available modules and the remaining required power, determine the target number of startup modules and the target power corresponding to each startup module.

[0135] like Figure 1 As shown, after determining that N is greater than M, the main control chip 102 can determine the relationship between K and M in order to ensure that as many startup modules as possible run at the highest efficiency (running at Pmod_max). Based on the relationship between K and M and Prem, the output power of each startup module is determined to meet the charging power requirement.

[0136] The charging control method for charging piles provided in this application, when the number of candidate start-up modules is greater than or equal to the number of available modules (i.e., when all available power modules are operating at their maximum efficiency points and cannot meet the charging power demand), can determine the number of modules needed to compensate for the underload power based on the number of available modules, a first power, and a second power. Furthermore, based on the relationship between the number of module compensation modules and the number of available modules, the optimal target number of start-up modules and the target power corresponding to each start-up module can be determined.

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

[0138] Step 701: Set M as the target number of startup modules.

[0139] Where M is the number of available modules.

[0140] like Figure 1 As shown, the main control chip 102 can start all available power modules in order to satisfy Pcar_need when N is greater than M, that is, when all available power modules are running at their maximum efficiency point but Pcar_need still cannot be satisfied. In this case, M is taken as the target number of modules to start.

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

[0142] Where K represents the number of modules to compensate.

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

[0144] In step 703, when K is less than M, the second power is taken as the target power corresponding to the K starting modules, the first power is taken as the target power corresponding to the M-K-1 starting modules, and the remaining demand power is taken 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 the multiple starting modules can meet the compensation of the under-load power, so that the K starting modules are compensated for the power margin and run at Pmod, and the M-K-1 starting modules run at the maximum power point, and the remaining 1 starting module runs at Prem, which is the optimal charging control solution and 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 shown in Figure 8 The charging pile 80 can include a plurality of power modules 801 and a controller 802; the plurality of power modules 801 can include a target number of starting modules 8011.

[0147] The controller 802 is configured to acquire a charging demand power, an available module number, and a first power and a second power of each power module; determine a candidate starting module number and a remaining demand power based on the charging demand power and the first power; the candidate starting module number is the number of power modules used to output the first power; determine a target starting module number and a target power corresponding to each starting module based on the candidate starting module number, the available module number, the remaining demand power, the first power and the second power; transmit a corresponding power control signal to each starting module 7011; wherein the available module number is the number of available power modules in 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.

[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] The controller 802 and the power module 801 can correspond to the main control chip 102 and the power module 101 in the embodiment shown in Figure 1

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

[0151] The acquisition module 901 is configured to acquire the charging demand power, the number of available modules, and the first power and the second power of each power module; the number of available modules is the number of available power modules in the plurality of power modules, the first power is the power output at the highest efficiency of each power module, and the second power is the maximum power output by each power module.

[0152] The first determination module 902 is configured to 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 used to output the first power.

[0153] The second determination module 903 is configured to 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.

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

[0155] In some embodiments of the application, the second determination module 903 is specifically configured to, when the number of candidate starting modules 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 number of target starting modules and the target power corresponding to each starting module based on the size relationship between the power margin and the remaining demand power, the remaining demand power, and the first power.

[0156] In some embodiments of the application, the second determination module 903 is specifically configured to, when the remaining demand power does not exceed the power margin, take N as the number of target starting modules; take the first power as the target power corresponding to N-1 starting modules; take the sum of the first power and the remaining demand power as the target power corresponding to the remaining 1 starting module; wherein N is the number of candidate starting modules; when the remaining demand power is greater than the power margin, take N+1 as the number of target starting modules; take the first power as the target power corresponding to N-1 starting modules; determine a 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 demand power and the target adjustment value as the target power corresponding to the N+1 starting module.

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

[0158] In some embodiments of the present application, the second determining module 903 is specifically configured to determine the maximum energy efficiency from the energy efficiencies corresponding to each first adjustment value; and determine 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 determining module 903 is further specifically configured to, when the number of candidate starting modules is greater than or equal to the number of available modules, determine, based on the number of available modules, the first power and the second power, a module compensation number; determine, based on the size relationship between the module compensation number and the number of available modules and the residual demand power, the target number of starting modules and the target power corresponding to each starting module.

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

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

[0162] In some embodiments of the present application, the second determining module 903 is further specifically configured to determine M as the target number of starting modules; wherein M is the number of available modules; when K is greater than or equal to M, determine the second power as the target power corresponding to each starting module; wherein K is the module compensation number; when K is less than M, determine the second power as the target power corresponding to K starting modules; determine the first power as the target power corresponding to M-K-1 starting modules, and determine the residual demand power as the target power corresponding to the remaining 1 starting module.

[0163] The beneficial technical effects of the above-mentioned exemplary embodiments of the charging pile charging control device 90 can be referred to the corresponding beneficial technical effects of the above-mentioned method embodiments, which will not be repeated here.

[0164] Corresponding to the foregoing embodiments of the charging control method of the charging pile, the present application also provides an embodiment of a charging device. Figure 10 A structural schematic diagram of a charging device provided by an embodiment of the present application is shown in FIG. 1. As shown in the figure, the charging device 100 includes a charging pile 1001 and a charging gun 1002. Figure 10

[0165] The charging pile 1001 is coupled with the charging gun 1002, and is configured to, when the charging pile 1001 starts charging, acquire a charging demand power, a number of available modules, and a first power and a second power of each power module in a plurality of power modules of the charging pile; the number of available modules is a number of available power modules in the plurality of power modules, the first power is a power when each power module outputs a highest efficiency, and the second power is a maximum power output by each power module; based on the charging demand power and the first power, a number of candidate start modules and a residual demand power are determined; the number of candidate start modules is a number of power modules used to output the first power; based on the number of candidate start modules, the number of available modules, the residual demand power, the first power, and the second power, a number of target start modules and a target power corresponding to each start module are determined; and each start module is controlled to transmit the corresponding target power to the charging gun 1002.

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

[0167] It should be noted that the beneficial technical effects corresponding to the above-mentioned exemplary embodiments of the charging device can be referred to the corresponding beneficial technical effects of the above-mentioned method embodiments, which will not be described here again.

[0168] In addition to the above-mentioned method and device, an embodiment of the present application can also provide a computer program product including computer program instructions, which, when executed by a processor, causes the processor to perform the steps in the charging control method of the charging pile of various embodiments of the present application described in the above-mentioned method embodiment part.

[0169] The computer program product can be written in any combination of one or more programming languages to perform the operations of the embodiments of the present application, including object-oriented programming languages such as Java, C++, and conventional procedural programming languages such as "C" language or similar programming languages. The program code can be executed entirely on a user computing device, partially on a user device, as an independent software package, partially on a 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 can also be a computer readable storage medium, which stores computer program instructions, and the computer program instructions, when executed by a processor, cause the processor to perform the steps in the charging control method of the charging pile of various embodiments of the present application described in the foregoing method embodiment part.

[0171] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium, for example, but not limited to, includes an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or instrument, or any combination of the above. More specific examples (non-exhaustive list) of the readable storage medium include an electric connection with one or more conductive 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 above describes the basic principles of the present application in combination with specific embodiments, but the advantages, advantages, effects and the like mentioned in the present application are only examples and are not limited, and it cannot be considered that each embodiment of the present application must have the above-mentioned advantages. In addition, the specific details of the above-mentioned embodiments are only for the purpose of example and for the purpose of understanding, and the above-mentioned details do not limit the present application to be necessarily implemented with the above-mentioned specific details.

[0173] Those skilled in the art can make various modifications and variations 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 equivalents, the present application also intends to include these modifications and variations.

[0174] In addition, the above-described embodiments are only specific embodiments of the present application and do not limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the present application shall be included in the protection scope of the present application.

Claims

1. A charging control method of a charging pile, the charging pile comprising a plurality of power modules, the power modules being configured to charge a target device; the method comprising: The method comprises: acquiring a charging demand power, an available module quantity, and a first power and a second power of each power module; wherein the available module quantity is the number of available power modules in 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; determining a candidate start module quantity and a residual demand power based on the charging demand power and the first power; the candidate start module quantity is the number of power modules used to output the first power; wherein the residual demand power is the difference between the charging demand power and the candidate start module quantity multiplied by the first power; determining a target start module quantity and a target power corresponding to each start module based on the candidate start module quantity, the available module quantity, the residual demand power, the first power, and the second power; when the candidate start module quantity is greater than or equal to 1 and less than the available module quantity, determining a power margin of a single power module based on the first power and the second power; determining the target start module quantity and the target power corresponding to each start module based on the size relationship between the residual demand power and the power margin, the residual demand power, and the first power; when the candidate start module quantity is greater than or equal to the available module quantity, determining a module compensation quantity based on the available module quantity, the first power, and the second power; determining the target start module quantity and the target power corresponding to each start module based on the size relationship between the module compensation quantity and the available module quantity and the residual demand power; controlling each start module to output the corresponding target power to charge the target device.

2. The method of claim 1, wherein, The determination of the target start module quantity and the target power corresponding to each start module based on the size relationship between the residual demand power and the power margin, the residual demand power, and the first power comprises: when the residual demand power does not exceed the power margin, taking N as the target start module quantity; taking the first power as the target power corresponding to N-1 start modules; and taking the sum of the first power and the residual demand power as the target power corresponding to the remaining 1 start module; wherein N is the candidate start module quantity; when the residual demand power is greater than the power margin, taking N+1 as the target start module quantity; taking the first power as the target power corresponding to N-1 start 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 start module, and taking the sum of the residual demand power and the target adjustment value as the target power corresponding to the N+1 start module.

3. The method of claim 2, wherein, The determination of the target adjustment value comprises: determining a first adjustment power corresponding to each first adjustment value and a first efficiency corresponding to the first adjustment power based on the residual demand power and a plurality of first adjustment values. determine, based on the first power and the plurality of first adjustment values, a second adjustment power corresponding to each of the first adjustment values, and a second efficiency corresponding to the second adjustment power; determine, 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, an energy efficiency corresponding to each of the first adjustment values; determine, based on a size relationship between the energy efficiencies corresponding to each of the first adjustment values, the target adjustment value from the plurality of first adjustment values.

4. The method of claim 3, wherein, The method further includes: determine a maximum energy efficiency from the energy efficiencies corresponding to each of the first adjustment values; determine the first adjustment value corresponding to the maximum energy efficiency as the target adjustment value.

5. The method of claim 1, wherein, The method further includes: determine, based on the available module quantity and the first power, an underload power; the underload power is a difference between the charging demand power and a total output power when each of the available power modules operates at a highest efficiency point; determine, based on the first power and the second power, a power margin of a single power module; determine a quotient of the underload power and the power margin as the module compensation quantity.

6. The method of claim 5, wherein, The method further includes: determine a product between the available module quantity and the first power; determine a difference between the charging demand power and the product as the underload power. The method further includes:

7. The method of claim 1, wherein, determine the target start module quantity and the target power corresponding to each of the start modules based on a size relationship between the module compensation quantity and the available module quantity and the residual demand power. determine the target start module quantity and the target power corresponding to each of the start modules based on a size relationship between the module compensation quantity and the available module quantity and the residual demand power. The charging pile includes a controller and a plurality of power modules, the controller is coupled with the plurality of power modules; The controller is configured to execute the method in any one of claims 1-7.

8. A charging station, characterized in that The method further includes: a charging pile and a charging gun, the charging pile is coupled with the charging gun, and the charging gun is configured to be coupled with a target device; the charging pile includes a controller and a plurality of power modules, the controller is coupled with the plurality of power modules; the controller is configured to execute the method in any one of claims 1-7.

9. A charging device, characterized by ​ ​

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