Power module scheduling method, charging pile and charging equipment

Abstract

The invention provides a power module scheduling method, apparatus and device, and a storage medium. The method comprises the steps of obtaining one or more health parameters of each power module in a plurality of power modules of a charging pile; based on the one or more health parameters of each power module, determining a total health degree corresponding to each power module; determining a scheduling sequence of the plurality of power modules based on the total health degree of each power module; and scheduling the power modules to charge the target equipment according to the scheduling sequence of the plurality of power modules. According to the scheme, the total health degree of each power module determined based on the one or more health parameters of each power module can accurately reflect the health condition of the power module, so that the power modules are scheduled according to the scheduling sequence of the plurality of power modules determined based on the total health degree to charge the target equipment; the use of each power module can be balanced, and the service life of the charging pile is prolonged.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of charging devices, and in particular, to a method for scheduling power modules, a charging pile, and a charging device. Background Art

[0002] In the related art, when multiple power modules of a charging pile are called, a fixed calling strategy based on the address order is usually adopted, that is, the power modules are enabled in ascending order of their addresses. Although this calling method is simple to implement, there are significant imbalance problems in the actual operation process. For example, the power modules with lower addresses are frequently called, while the power modules with higher addresses are called less frequently, resulting in a large difference in the usage rates between different power modules.

[0003] After long-term operation, the power modules with lower addresses are in a high-load working state for a long time, so their aging speed accelerates, and their reliability and lifespan are significantly reduced; while the power modules with higher addresses are in an idle or low-load state for a long time and fail to give full play to their roles. This unbalanced usage method not only reduces the overall lifespan of the whole machine system, but also increases the maintenance cost and affects the long-term stable operation of the charging pile. Summary of the Invention

[0004] The embodiments of the present application provide a method for scheduling power modules, a charging pile, and a charging device, which can solve the problem of unbalanced usage existing in the existing module scheduling method, improve the overall lifespan of the machine, reduce the maintenance cost, and ensure the long-term stable operation of the charging pile.

[0005] To achieve the above object, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the embodiments of the present application provide a method for scheduling power modules, which is applied to a charging pile. The method includes: obtaining one or more health parameters of each power module among multiple power modules of the charging pile; determining the total health degree corresponding to each power module based on the one or more health parameters of each power module; determining the scheduling order of the multiple power modules based on the total health degrees of the power modules; and scheduling the power modules to charge a target device according to the scheduling order of the multiple power modules.

[0007] Based on this solution, by obtaining one or more health parameters of each power module among multiple power modules of a charging pile, and based on the one or more health parameters of each power module, the total health degree corresponding to each power module is determined. When one or more health parameters of a power module can accurately reflect the health condition of the power module, the total health degree corresponding to the power module determined based on the one or more health parameters of the power module can accurately reflect the overall health condition of the power module. Thus, based on the total health degrees of each power module, the scheduling order reflecting the magnitude relationship of the total health degrees of multiple power modules can be determined. Furthermore, by scheduling the power modules to charge the target device according to the scheduling order of the multiple power modules, the usage of each power module can be balanced, the service life of the charging pile can be extended, the maintenance cost can be reduced, and the long-term stable operation of the charging pile can be ensured.

[0008] In some embodiments of the present application, determining the total health degree corresponding to each power module based on one or more health parameters of each power module includes: determining the health degree corresponding to each health parameter of each power module based on the one or more health parameters of each power module; and determining the total health degree corresponding to each power module based on the health degrees corresponding to each health parameter of each power module.

[0009] Based on this solution, since the health degrees corresponding to each health parameter of each power module can reflect the health conditions of each power module in different health parameter dimensions, therefore, the total health degrees corresponding to each power module determined based on the health degrees corresponding to each health parameter of each power module can reflect the true health conditions of each power module to a certain extent.

[0010] In some embodiments of the present application, determining the health degree corresponding to each health parameter of each power module based on one or more health parameters of each power module includes: determining the total sum of the target health parameters corresponding to multiple power modules based on the target health parameters of each power module among the multiple power modules; and determining the target health degree corresponding to the target health parameter of each power module based on the target health parameter of each power module and the total sum of the target health parameters.

[0011] Based on this solution, since the target health parameter of each power module can reflect the health condition of each power module in the target health parameter dimension, therefore, the total sum of the target health parameters corresponding to multiple power modules determined based on the target health parameter of each power module can reflect the overall health condition of multiple power modules in the target health parameter dimension. Furthermore, determining the target health degree corresponding to the target health parameter of each power module based on the target health parameter of each power module and the total sum of the target health parameters can reflect the health condition of each power module in the target health parameter dimension.

[0012] In some embodiments of the present application, determining the total health degree corresponding to each power module based on the health degrees corresponding to the health parameters of each power module includes: obtaining the weighting coefficients corresponding to each health parameter; and determining the total health degree of the power module based on the weighting coefficients corresponding to each health parameter and the health degrees corresponding to the health parameters of the power module.

[0013] Based on this solution, when the weighting coefficients corresponding to each health parameter can accurately reflect the degree of influence of the corresponding health parameter on the health of the power module, the total health degree that conforms to the actual health condition of the power module can be determined based on the weighting coefficients corresponding to each health parameter and the health degrees corresponding to the health parameters of the power module.

[0014] In some embodiments of the present application, charging a target device by scheduling power modules according to the scheduling order of multiple power modules includes: determining the scheduling order of one or more available power modules among the multiple power modules based on the scheduling order of the multiple power modules; scheduling the available power modules to charge the target device according to the scheduling order of the one or more available power modules; wherein the available power modules are the power modules in the idle state among the multiple power modules.

[0015] Based on this solution, when the scheduling order of the multiple power modules can accurately reflect the health degree of each power module, the scheduling of one or more available power modules determined based on the scheduling order of the multiple power modules can accurately reflect the health degree of each available power module. Furthermore, scheduling the available power modules to charge the target device according to the scheduling order of the one or more available power modules can balance the use of each available power module and extend the service life of the charging pile to a certain extent.

[0016] In some embodiments of the present application, determining the scheduling order of one or more available power modules among the multiple power modules based on the scheduling order of the multiple power modules includes: determining the new addresses of the multiple power modules based on the scheduling order of the multiple power modules; determining the new addresses of one or more available power modules among the multiple power modules based on the new addresses of the multiple power modules; scheduling the available power modules to charge the target device according to the scheduling order of the one or more available power modules includes: scheduling the available power modules to charge the target device in ascending order of the new addresses of the one or more available power modules.

[0017] Based on this solution, when the scheduling order of multiple power modules can accurately reflect the health status of each power module, a new address for representing the scheduling order of the power modules can be accurately determined based on the scheduling order of the multiple power modules. Thus, when the charging pile starts charging, according to the new addresses of the multiple power modules, the new addresses of one or more available power modules for representing the health status of the available power modules can be accurately determined. Furthermore, by scheduling the available power modules to charge the target device in ascending order of the new addresses of the one or more available power modules, the balanced use of each available power module can be achieved, and the service life of the charging pile can be extended to a certain extent.

[0018] In some embodiments of the present application, the multiple health parameters include total output electrical energy, temperature rise, and voltage fluctuation; the total output electrical energy is the historical cumulative output electrical energy of the power module, the temperature rise is the amount of temperature rise when the power module maintains the maximum power output for a duration reaching a preset duration during a single charging process of the target device; the voltage fluctuation is the peak-to-peak voltage at the output end of the power factor correction circuit in the power module when the power module charges the target device at the maximum power.

[0019] Based on this solution, since the total output electrical energy, temperature rise, and voltage fluctuation can seriously affect the life of the power module, therefore, using the total output electrical energy, temperature rise, and voltage fluctuation as the health parameters of the power module can more accurately reflect the health degree of the power module.

[0020] In some embodiments of the present application, the first weighting coefficient corresponding to the total output electrical energy is less than the second weighting coefficient corresponding to the temperature rise; the second weighting coefficient is less than the third weighting coefficient corresponding to the voltage fluctuation.

[0021] Based on this solution, since the degrees of influence of the total output electrical energy, temperature rise, and voltage fluctuation on the life of the power module increase in sequence, therefore, the first weighting coefficient corresponding to the total output electrical energy is less than the second weighting coefficient corresponding to the temperature rise; the second weighting coefficient is less than the third weighting coefficient corresponding to the voltage fluctuation, which can accurately reflect the magnitudes of the degrees of influence of the total output electrical energy, temperature rise, and voltage fluctuation on the life of the power module. Furthermore, the total health degree of the power module determined based on the first weighting coefficient, the second weighting coefficient, and the third weighting coefficient is more in line with the actual health condition of the power module.

[0022] Second aspect, an embodiment of the present application provides a charging pile, which includes: a controller and multiple power modules; the controller is configured to obtain one or more health parameters of each power module among the multiple power modules of the charging pile; based on the one or more health parameters of each power module, determine the total health degree corresponding to each power module; based on the total health degree of each power module, determine the scheduling order of the multiple power modules; transmit a module call signal to the power modules according to the scheduling order of the multiple power modules; the multiple power modules are configured to respond to the module call signal to charge the target device.

[0023] Third aspect, an embodiment of the present application provides a charging device, including a charging pile and a charging gun; the charging pile is coupled to the charging gun and is configured to obtain one or more health parameters of each power module among the multiple power modules of the charging pile; based on the one or more health parameters of each power module, determine the total health degree corresponding to each power module; based on the total health degree of each power module, determine the scheduling order of the multiple power modules; schedule the power modules to transmit charging power to the charging gun according to the scheduling order of the multiple power modules; the charging gun is coupled to the charging pile and is configured to be coupled to the target device and transmit charging power to the target device.

[0024] Fourth aspect, an embodiment of the present application provides a power module scheduling device, which includes: an acquisition module configured to obtain one or more health parameters of each power module among the multiple power modules of the charging pile; a first determination module configured to determine the total health degree corresponding to each power module based on the one or more health parameters of each power module; a second determination module configured to determine the scheduling order of the multiple power modules based on the total health degree of each power module; a scheduling module configured to schedule the power modules to charge the target device according to the scheduling order of the multiple power modules.

[0025] Fifth aspect, an embodiment of the present application provides a storage medium, which stores a computer program for executing the power module scheduling method provided in the first aspect above.

[0026] 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 power module scheduling method provided in the first aspect above is executed. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of a charging pile provided by an embodiment of the present application.

[0028] Figure 2 It is a schematic flow diagram of a power module scheduling method provided by an embodiment of the present application.

[0029] Figure 3Schematic flowchart of another power module scheduling method provided by an embodiment of the present application.

[0030] Figure 4 Schematic flowchart of yet another power module scheduling method provided by an embodiment of the present application.

[0031] Figure 5 Schematic flowchart of yet another power module scheduling method provided by an embodiment of the present application.

[0032] Figure 6 Schematic flowchart of yet another power module scheduling method provided by an embodiment of the present application.

[0033] Figure 7 Schematic diagram of the structure of another charging pile provided by an embodiment of the present application.

[0034] Figure 8 Schematic diagram of the structure of a power module scheduling device provided by an embodiment of the present application.

[0035] Figure 9 Schematic diagram of the structure of a charging device provided by an embodiment of the present application. Detailed implementation manners

[0036] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. For the convenience of clearly describing the technical solutions in the embodiments of the present application, the descriptions such as first and second that appear in the embodiments of the present application are only for schematic and distinguishing the described objects, without order, and do not particularly limit the number of devices in the embodiments of the present application, and cannot constitute any limitation to the embodiments of the present application.

[0037] The relevant technical terms in the embodiments of the present application are described below:

[0038] Charging pile, the core energy replenishment device for electric vehicles (EVs), whose function is to safely and efficiently transmit the electric energy from the power grid to the electric vehicle battery. According to the current type, charging piles can include DC charging piles and AC charging piles. According to the installation method, they can include wall-mounted, column-mounted and mobile types.

[0039] Power module, mainly used for electric energy conversion, power conversion and safety protection, etc., directly affecting the charging efficiency, safety and reliability. The power module can include a power factor correction circuit and a DC / DC converter.

[0040] The main control chip is a key component for implementing 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, functional complexity, and intelligent requirements of the charging pile.

[0041] The embodiment of the present application provides a power module scheduling method. The method includes obtaining one or more health parameters of each power module among multiple power modules of a charging pile; determining the total health degree corresponding to each power module based on the one or more health parameters of each power module; determining the scheduling order of the multiple power modules based on the total health degree of each power module; and scheduling the power modules to charge a target device according to the scheduling order of the multiple power modules. Since the one or more health parameters of the power module can accurately reflect the health condition of the power module, the total health degree corresponding to the power module determined based on the one or more health parameters of the power module can accurately reflect the overall health condition of the power module. Thus, based on the total health degree of each power module, the scheduling order reflecting the magnitude relationship of the total health degrees of the multiple power modules can be determined. Scheduling the power modules to charge according to the scheduling order of the multiple power modules can balance the use of each power module, extend the service life of the charging pile, reduce the maintenance cost, and ensure the long-term stable operation of the charging pile.

[0042] 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 This 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 multiple power modules 101 and a main control chip 102 for controlling the multiple 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 number of the multiple power modules 101 can be determined according to the total power of the charging pile 10 and the maximum power of each power module 101. The embodiment of the present application does not limit the number of power modules 101 included in the charging pile 10. The following embodiments will take the number of power modules 101 included in the charging pile 10 being 24 as an example for illustrative purposes. In some examples, the charging pile 10 may include 24 power modules 101 arranged in ascending order of address. It should be noted that the address of each power module can be understood as the identifier of each power module.

[0043] Figure 2 The flowchart of a power module scheduling method provided by an embodiment of this application. This power module scheduling method can be applied to a main control chip 102 as shown in Figure 1 the figure. As shown in Figure 2 the figure, this power module scheduling method may include the following steps 201 to 204.

[0044] Step 201: Obtain one or more health parameters of each power module among multiple power modules of a charging pile;

[0045] Exemplarily, the health parameter may be a parameter that affects the life of the power module among all parameters of the power module. The power module may include a power factor correction circuit (PFC) and a DC-DC conversion circuit, and an electrolytic capacitor is also configured between the output terminal of the PFC circuit and the input terminal of the DC-DC conversion circuit. Since the life of the components in the PFC and DC-DC conversion circuits is mainly affected by temperature, working power magnitude and duration, and the life of the electrolytic capacitor is mainly affected by the ripple voltage (peak-to-peak voltage) output by the PFC, the life of the power module is at least related to the electrical energy output by the power module, temperature and the health of the electrolytic capacitor.

[0046] In some examples, the health parameters may include total output electrical energy, temperature rise and voltage fluctuation. Among them, the total output electrical energy is the historical cumulative output electrical energy of the power module, the temperature rise is the amount of temperature rise when the power module maintains the maximum power output for a preset duration during a single charging process of the target device; the voltage fluctuation is the peak-to-peak voltage at the output terminal of the power factor correction circuit in the power module when the power module charges the target device at the maximum power.

[0047] It can be understood that the total output electrical energy of the power module can be the sum of the current output electrical energy and the historical output electrical energy. In some examples, if multiple power modules are all intelligent power modules, and each intelligent power module is built with a current / voltage sensor and a microprocessor, each power module can monitor its own output power and time in real time, and calculate the output electrical energy in real time. Each power module can transmit the output electrical energy to the main control chip 102 as shown in Figure 1 the figure, so that the main control chip 102 can use the sum of the output electrical energy calculated in real time and the pre-stored historical output electrical energy as the total output electrical energy of the power module. Among them, the historical output electrical energy can be the cumulative output electrical energy of the power module since it was put into use.

[0048] In some other examples, if multiple power modules are all dedicated recording power modules, the historical output electrical energy of each power module can be stored in the corresponding power module. Thus, the power module can calculate the total output electrical energy based on the output electrical energy calculated in real time and the pre-stored historical output electrical energy, and transmit the total output electrical energy to the main control chip.

[0049] In some other examples, if multiple power modules are all ordinary power modules and do not include current / voltage sensors and microprocessors inside each power module, the main control chip 102 can monitor the power and time output by each power module in real time, and calculate the output electrical energy in real time. Thus, the sum of the output electrical energy calculated in real time and the pre-stored historical output electrical energy is used as the total output electrical energy of the power module. The embodiments of the present application do not limit the manner in which the main control chip 102 obtains the total output electrical energy. The embodiments of the present application take the main control chip 102 receiving the total output electrical energy transmitted by each power module in real time as an example for illustrative description.

[0050] Exemplarily, the preset duration can be any value greater than or equal to 30 minutes. The embodiments of the present application do not limit the size of the preset duration. The following embodiments take the preset duration as 30 minutes as an example for illustrative description.

[0051] Such as Figure 1 The main control chip 102 shown can read the target temperature rise of each power module 101 in real time. In some examples, the target temperature rise can be the maximum temperature rise of the power module 101, and can be updated in real time as the power module 101 operates.

[0052] In some examples, each power module among multiple power modules can integrate multiple thermistors. Such as Figure 1 The main control chip 102 shown can monitor the operating state of each power module 101 when each power module 101 is operating. When the power module 101 operates at the maximum power and the continuous duration reaches the preset duration, the temperature rise value of the power module 101 during this charging process is captured through multiple thermistors, and the target temperature rise of the power module 101 is updated based on this rise value when the power module 101 is in the standby state.

[0053] In some examples, the main control chip 102 can store the target temperature rise of each power module 101, and when receiving the temperature rise value of the power module 101 during this charging process, determine whether the temperature rise value is greater than the corresponding target temperature rise. When the temperature rise value is greater than the corresponding target temperature rise, update the corresponding target temperature rise based on this temperature rise value. When the temperature rise value is less than or equal to the corresponding target temperature rise, do not update the corresponding target temperature rise.

[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] As Figure 1 shown, the main control chip 102 can read the target voltage peak-to-peak value at the PFC output end of each power module 101 in real time. In some examples, the target voltage peak-to-peak value at the PFC output end may be the maximum voltage peak-to-peak value at the PFC output end, and it can be updated in real time as the power module 101 operates.

[0056] In some examples, as Figure 1 shown, the main control chip 102 can monitor the operating state of each power module 101 when each power module 101 is operating. When the power module 101 is operating at the maximum power, it can capture the voltage peak-to-peak value at the PFC output end in real time, and update the target temperature rise of the power module 101 based on the captured voltage peak-to-peak value when the power module 101 is in the standby state.

[0057] In some examples, the target voltage peak-to-peak value at the PFC output end of each power module 101 can be stored in the main control chip 102. When the captured voltage peak-to-peak value is received, it can be determined whether the captured voltage peak-to-peak value is greater than the corresponding target voltage peak-to-peak value. When the captured voltage peak-to-peak value is greater than the corresponding target voltage peak-to-peak value, the target voltage peak-to-peak value is updated based on the captured voltage peak-to-peak value. When the captured voltage peak-to-peak value is less than or equal to the corresponding target voltage peak-to-peak value, the corresponding target voltage peak-to-peak value is not updated.

[0058] Since the total output electrical energy, temperature rise, and voltage fluctuation can seriously affect the life of the power module, taking the total output electrical energy, temperature rise, and voltage fluctuation as the health parameters of the power module can more accurately reflect the health of the power module.

[0059] Step 202: Determine the total health of each power module based on one or more health parameters of each power module.

[0060] Exemplarily, the total health of the power module may be the total health obtained by integrating the health of each health parameter in one or more health parameters. For example, the total health of the power module can be determined based on one or more parameters among the total output electrical energy, temperature rise, and voltage fluctuation of the power module. The following embodiments will be exemplarily described by taking the total health of the power module determined based on the three parameters of the total output electrical energy, temperature rise, and voltage fluctuation of the power module as an example.

[0061] In some examples, the total health of the power module can be the total health obtained by integrating the health corresponding to the total output electric energy, the health corresponding to the temperature rise, and the health corresponding to the voltage fluctuation. And when the health corresponding to the total output electric energy of the power module, the health corresponding to the temperature rise, and the health corresponding to the voltage fluctuation are all relative to the health of other power modules in the charging pile, the total health corresponding to the power module is also the relative total health relative to other power modules in the charging pile.

[0062] Such as Figure 1 The main control chip 102 shown can process one or more health parameters of each power module according to a preset rule to obtain the total health corresponding to each power module.

[0063] Step 203: Determine the scheduling order of multiple power modules based on the total health of each power module.

[0064] Such as Figure 1 The main control chip 102 shown can sort the total health of each power module in descending order to obtain a sequence of power modules arranged in descending order of total health, and use this sequence of power modules arranged in descending order of total health as the scheduling order of multiple power modules. It can be understood that the greater the total health of the power module, the healthier the power module is, and this power module can be preferentially scheduled during scheduling.

[0065] Step 204: Schedule the power modules to charge the target device according to the scheduling order of multiple power modules.

[0066] Such as Figure 1 The main control chip 102 shown can, when receiving the charging demand of the target device and the charging pile starts charging, schedule the power modules to charge the target device according to the scheduling order of multiple power modules.

[0067] Specifically, when the charging pile starts charging, the main control chip 102 can first determine the scheduling order of one or more available power modules according to the scheduling order of multiple power modules. Then, according to the charging demand power of the target device and the rated power of the power module, determine the required number of modules. When the required number of modules is less than the number of available power modules, then schedule the available power modules with the required number of modules to charge the target device according to the scheduling order of one or more available power modules.

[0068] For example, when the charging demand power of the target device is 100 KW and the rated power of each power module is 20 KW, the main control chip 102 can determine that 5 available power modules need to be called, that is, the number of module requirements is 5. Thus, when the number of available power modules is greater than 5, according to the scheduling order of one or more available power modules, the first 5 available power modules are scheduled to charge the target device. In some examples, the main control chip 102 can call the first 5 available power modules at the same time, can also call them in sequence according to the scheduling order of the first 5 available power modules, or can randomly call the first 5 available power modules. The present application does not make specific limitations on this.

[0069] In the power module scheduling method provided by the embodiments of the present application, when one or more health parameters of the power module can accurately reflect the health status of the power module, therefore, the total health degree corresponding to the power module determined based on one or more health parameters of the power module can accurately reflect the overall health status of the power module. Thus, based on the total health degrees of each power module, the scheduling order reflecting the magnitude relationship of the total health degrees of multiple power modules can be determined. Furthermore, when the charging pile starts charging, the power modules are scheduled to charge according to the scheduling order of multiple power modules, which can balance the use of each power module, extend the service life of the charging pile, reduce the maintenance cost, and ensure the long-term stable operation of the charging pile.

[0070] In some embodiments of the present application, in order to ensure that the total health degree of each power module fully synthesizes each health parameter in one or more health parameters, such as Figure 1 shown, after the main control chip 102 obtains one or more health parameters of each power module 101, based on each health parameter of each power module 101, the health degree corresponding to the health parameter of each power module 101 is determined respectively, and then based on the health degrees corresponding to the health parameters of each power module 101, the total health degree corresponding to each power module 101 is determined.

[0071] Such as Figure 3 shown, on the basis of the above Figure 2 shown embodiment, step 202 determines the total health degree corresponding to each power module based on one or more health parameters of each power module, which may include the following steps 2021 and step 2022.

[0072] Step 2021: Based on one or more health parameters of each power module, determine the health degree corresponding to each health parameter of each power module respectively.

[0073] Taking one or more health parameters including total output electric energy, temperature rise, and voltage fluctuation as an example. The health degrees corresponding to the health parameters of each power module may include the total output electric energy health degree, temperature rise health degree, and electrolytic capacitor health degree of each power module.

[0074] As shown Figure 1 in the figure, take the example that the charging pile 10 includes N power modules 101. The total output power health degrees of the first to the Nth power modules can be denoted as SH1, SH2, SH3... SHN respectively; the temperature rise health degrees of the first to the Nth power modules can be denoted as TH1, TH2, TH3... THN respectively; the electrolytic capacitor health degrees of the first to the Nth power modules can be denoted as UH1, UH2, UH3... UHN respectively.

[0075] In some embodiments of the present application, based on one or more health parameters of each power module, determining the health degree corresponding to each health parameter of each power module may include: determining the sum of the target health parameters corresponding to multiple power modules based on the target health parameters of each power module in the multiple power modules; determining the target health degree corresponding to the target health parameter of each power module based on the target health parameter of each power module and the sum of the target health parameters.

[0076] Exemplarily, the target health parameter may be one of the one or more health parameters. For example, the target health parameter may be one of the total output power, temperature rise, and voltage fluctuation. As shown Figure 1 in the figure, take the example that the charging pile 10 includes N power modules 101. When the target health parameter is the total output power and the total output powers of the first to the Nth power modules are denoted as S1, S2, S3... SN respectively, the main control chip 102 may calculate the sum of S1, S2, S3... SN, and take the calculated sum (S1 + S2 + S3 +... + SN) of S1, S2, S3... SN as the total output power sum; when the target health parameter is the temperature rise and the temperature rises of the first to the Nth power modules are denoted as T1, T2, T3... TN respectively, the main control chip 102 may calculate the sum of T1, T2, T3... TN, and take the calculated sum (T1 + T2 + T3 +... + TN) of T1, T2, T3... TN as the temperature rise sum; when the target health parameter is the voltage fluctuation and the voltage fluctuations of the first to the Nth power modules are denoted as U1, U2, U3... UN respectively, the main control chip 102 may calculate the sum of U1, U2, U3... UN, and take the calculated sum (U1 + U2 + U3 +... + UN) of U1, U2, U3... UN as the voltage fluctuation sum.

[0077] Determining the target health degree corresponding to the target health parameter of each power module based on the target health parameter of each power module and the sum of the target health parameters may include: determining the ratio of the target health parameter of each power module to the sum of the target health parameters, and taking the difference between 1 and the ratio as the target health degree corresponding to the target health parameter of each power module.

[0078] As shownFigure 1 As shown in the figure, taking the first power module 101 in the charging pile 10 as an example. The main control chip 102 can use S1 / (S1 + S2 + S3 + …… + SN) as the ratio of the total output electric energy of the first power module 101 to the total sum of the output electric energy, and use 1 - S1 / (S1 + S2 + S3 + …… + SN) as the health degree SH1 of the total output electric energy of the first power module 101; use T1 / (T1 + T2 + T3 + …… + TN) as the ratio of the temperature rise of the first power module 101 to the total sum of the temperature rises, and use 1 - T1 / (T1 + T2 + T3 + …… + TN) as the temperature rise health degree TH1 of the first power module 101; use U1 / (U1 + U2 + U3 + …… + UN) as the ratio of the voltage fluctuation of the first power module 101 to the total sum of the voltage fluctuations, and use 1 - U1 / (U1 + U2 + U3 + …… + UN) as the electrolytic capacitor health degree UH1 of the first power module 101. The health degree can characterize the health conditions of the power module in terms of temperature rise, the power factor correction circuit in the power module, and the electrolytic capacitor. The higher the health degree, the better the performance of the power module in the above three health dimensions.

[0079] Since the implementation manner of determining the target health degree corresponding to the target health parameter for the second power module 101 to the Nth power module 101 is similar to that of determining the health degree corresponding to the target health parameter for the first power module 101, it will not be elaborated herein in the embodiments of the present application.

[0080] Since the target health parameters of each power module can reflect the health conditions of each power module in the target health parameter dimension, therefore, based on the sum of the target health parameters corresponding to multiple power modules determined by the target health parameters of each power module, it can reflect the overall health conditions of multiple power modules in the target health parameter dimension. Furthermore, based on the target health parameters of each power module and the sum of the target health parameters, determining the target health degree corresponding to the target health parameter of each power module can reflect the health conditions of each power module in the target health parameter dimension.

[0081] Step 2022: Determine the total health degree corresponding to each power module based on the health degrees corresponding to the health parameters of each power module.

[0082] Exemplarily, as Figure 1 shown, the main control chip 102 can synthesize the health degrees corresponding to the health parameters of each power module to obtain the total health degree corresponding to each power module.

[0083] In the power module scheduling method provided by the embodiments of the present application, since the health degrees corresponding to the respective health parameters of each power module can reflect the health status of each power module in different health parameter dimensions, therefore, the total health degree corresponding to each power module determined based on the health degrees corresponding to the respective health parameters of each power module can, to a certain extent, reflect the true health condition of each power module.

[0084] In some examples, in order to accurately synthesize the health degrees corresponding to the respective health parameters and obtain a total health degree that can reflect the true health condition of each power module, the health degrees corresponding to the respective health parameters may be synthesized according to the degree of influence of each health parameter on the health of the power module. For example, the weighting coefficients corresponding to the respective health parameters may be determined according to the degree of influence of each health parameter on the health of the power module, and the total health degree of the power module may be determined according to the weighting coefficients corresponding to the respective health parameters and the health degrees corresponding to the health parameters of the power module.

[0085] As Figure 4 shown, on the basis of the embodiment shown above Figure 3 Step 2022, based on the health degrees corresponding to the respective health parameters of each power module, determines the total health degree corresponding to each power module, and may include the following steps 401 and 402.

[0086] Step 401: Obtain the weighting coefficients corresponding to the respective health parameters.

[0087] The weighting coefficients corresponding to each health parameter are used to characterize the influence degree of the corresponding health parameter on the health of the power module, and can be determined based on experimental data or expert experience. Take one or more health parameters including total output electrical energy, temperature rise, and voltage fluctuation as an example. The first weighting coefficient corresponding to the total output electrical energy (denoted as K1), the second weighting coefficient corresponding to the temperature rise (denoted as K2), and the third weighting coefficient corresponding to the voltage fluctuation (denoted as K3) can be determined according to the influence degrees of the total output electrical energy, temperature rise, and voltage fluctuation of the power module on the health of the power module. In some examples, if the influence degree of the total output electrical energy of the power module on the health of the power module is less than the influence degree of the temperature rise on the health of the power module, and the influence degree of the temperature rise on the health of the power module is less than the influence degree of the voltage fluctuation on the health of the power module, then the first weighting coefficient K1 corresponding to the total output electrical energy is less than the second weighting coefficient K2 corresponding to the temperature rise; the second weighting coefficient K2 corresponding to the temperature rise is less than the third weighting coefficient K3 corresponding to the voltage fluctuation. And the sum of K1, K2, and K3 is 1. In some examples, K1, K2, and K3 can be 0.25, 0.35, and 0.4 respectively. In some examples, K1, K2, and K3 can be 0.2, 0.35, and 0.45 respectively. In still some other examples, K1, K2, and K3 can be 0.2, 0.3, and 0.5 respectively. The embodiments of the present application do not limit the magnitudes of K1, K2, and K3. The embodiments of the present application take K1, K2, and K3 being 0.25, 0.35, and 0.4 respectively as an example for illustrative description.

[0088] In some examples, such as Figure 1 shown, the main control chip 102 can read the weighting coefficients corresponding to each health parameter stored in advance when determining the total health degree corresponding to each power module.

[0089] Step 402: Determine the total health degree of the power module based on the weighting coefficients corresponding to each health parameter and the health degrees corresponding to each health parameter of the power module.

[0090] Taking the first weighting coefficient K1 corresponding to the output electrical energy, the second weighting coefficient K2 corresponding to the temperature rise, and the third weighting coefficient K3 corresponding to the voltage fluctuation, and the power module being the first power module 101 as shown in Figure 1 shown, and the total output electrical energy health degree of the first power module 101 being SH1, the temperature rise health degree being TH1, and the electrolytic capacitor health degree being UH1 as an example, as shown in Figure 1 shown, the main control chip 102 can calculate SH1*K1 + TH1*K2 + UH1*K3, and take the obtained calculation result as the total health degree MH1 of the first power module 101.

[0091] Since the determination methods of the total health degrees of the other power modules except the first power module 101 among the multiple power modules are the same as the determination method of the total health degree of the first power module 101, the embodiments of the present application will not elaborate herein.

[0092] In the power module scheduling method provided by the embodiments of the present application, when the weighting coefficients corresponding to the respective health parameters can accurately reflect the degree of influence of the corresponding health parameters on the health of the power module, based on the weighting coefficients corresponding to the respective health parameters and the health degrees corresponding to the respective health parameters of the power module, the total health degree that conforms to the true health condition of the power module can be determined.

[0093] As Figure 5 shown, on the basis of the above Figure 2 shown embodiment, step 204 schedules the power modules to charge the target device according to the scheduling order of multiple power modules, and may include the following steps 2041 and 2042.

[0094] Step 2041: Based on the scheduling order of multiple power modules, determine the scheduling order of one or more available power modules among the multiple power modules.

[0095] Specifically, when the charging pile starts charging, based on the scheduling order of multiple power modules, the scheduling order of one or more available power modules among the multiple power modules can be determined.

[0096] Among them, the available power module is a power module in an idle state among the multiple power modules.

[0097] In some examples, the available power module can be a power module other than the power modules in the running state among the multiple power modules.

[0098] As Figure 1 shown, the main control chip 102 can remove the already running power modules from the scheduling order of multiple power modules when the charging pile 10 receives a charging request and starts charging the charging pile, so as to obtain the scheduling order of one or more available power modules. Taking the multiple power modules including 24 power modules, and the scheduling order of the 24 power modules being the 1st power module, the 2nd power module to the 10th power module, the 24th power module, the 22nd power module, the 23rd power module, the 11th to the 21st power modules, where the 1st power module to the 15th power module and the 24th power module are in the running state, the scheduling order of one or more available power modules is the 22nd power module, the 23rd power module, the 16th power module to the 21st power module.

[0099] Step 2042: Schedule the available power modules to charge the target device according to the scheduling order of one or more available power modules.

[0100] Taking the scheduling order of one or more available power modules being the 22nd power module, the 23rd power module, the 16th power module to the 21st power module as an example. AsFigure 1 As shown in the figure, the main control chip 102 can determine that 4 power modules need to operate according to the charging demand power and the rated power of the power module, that is, the number of module requirements is 4. At this time, the 22nd power module, the 23rd power module, the 16th power module, and the 17th power module can be preferentially scheduled to charge the target device, and it is not necessary to call the 18th power module to the 21st power module.

[0101] The implementation method of scheduling the 22nd power module, the 23rd power module, the 16th power module, and the 17th power module is similar to Figure 1 the implementation method of scheduling the first 5 available power modules in step 204 of the embodiment shown in the figure. The embodiments of the present application will not be elaborated here.

[0102] For the power module scheduling method provided by the embodiments of the present application, when the scheduling order of multiple power modules can accurately reflect the health status of each power module, the scheduling order of one or more available power modules determined based on the scheduling order of multiple power modules can accurately reflect the health status of each available power module. Furthermore, scheduling the available power modules to charge the target device according to the scheduling order of one or more available power modules can balance the use of each available power module, and can extend the service life of the charging pile to a certain extent.

[0103] As Figure 6 shown in the figure, on the basis of the above Figure 5 shown embodiment, step 2041, when the charging pile starts charging, based on the scheduling order of multiple power modules, determining the scheduling order of one or more available power modules among multiple power modules may include the following steps 601 and step 602.

[0104] Step 601: Based on the scheduling order of multiple power modules, determine the new addresses of multiple power modules.

[0105] Exemplarily, the new address is an address reallocated according to the total health of each power module among multiple power modules. The higher the health, the lower the address value. As Figure 1 shown in the figure, the main control chip 102 can, based on the scheduling order of multiple power modules 101, use multiple addresses from low to high as the new addresses of the corresponding power modules in the scheduling order of multiple power modules 101. Among them, the address of the power module with the highest total health can be set to the lowest, and the address of the power module with the lowest total health can be set to the highest. It can be understood that the main control chip 102 can determine the new addresses of each power module 101, but does not update the addresses of each power module 101.

[0106] Step 602: Determine the new addresses of one or more available power modules among the multiple power modules based on the new addresses of the multiple power modules; Schedule the available power modules to charge the target device in ascending order of the new addresses of the one or more available power modules.

[0107] As Figure 1 shown, when the main control chip 102 receives a charging request and starts the charging pile 10, it can determine the new addresses of one or more available power modules from the addresses of the multiple power modules 101 and update the addresses of the one or more available power modules to the new addresses. Since the unavailable power modules among the multiple power modules 101 are in an operating state, the addresses of the unavailable power modules are not updated.

[0108] In some embodiments of the present application, step 2042 of scheduling the available power modules to charge the target device according to the scheduling order of the one or more available power modules may include: Scheduling the available power modules to charge the target device in ascending order of the new addresses of the one or more available power modules.

[0109] In the power module scheduling method provided by the embodiments of the present application, when the scheduling order of the multiple power modules can accurately reflect the health status of each power module, based on the scheduling order of the multiple power modules, the new addresses used to represent the power module scheduling order can be accurately determined. Thus, when the charging pile starts charging, according to the new addresses of the multiple power modules, the new addresses of one or more available power modules used to represent the health status of the available power modules can be accurately determined. Furthermore, scheduling the available power modules to charge the target device in ascending order of the new addresses of the one or more available power modules can achieve the balanced use of each available power module and extend the service life of the charging pile to a certain extent.

[0110] Corresponding to the embodiments of the foregoing power module scheduling method, the present application also provides a charging pile. Figure 7 As a schematic structural diagram of a charging pile provided by an embodiment of the present application. As Figure 7 shown, the charging pile 70 may include multiple power modules 701 and a controller 702. Among them, the controller 702 is used to obtain one or more health parameters of each power module 701 among the multiple power modules 701 of the charging pile 70; Determine the total health degree corresponding to each power module 701 based on the one or more health parameters of each power module 701; Determine the scheduling order of the multiple power modules 701 based on the total health degree of each power module 701; Transmit a module call signal to the power module 701 according to the scheduling order of the multiple power modules 701; The multiple power modules 701 are used to respond to the module call signal to charge the target device.

[0111] In some examples, the controller 702 and the power module 701 may respectively correspond to the main control chip 102 and the power module 101 in the embodiment as shown in Figure 1 the embodiment shown.

[0112] Corresponding to the foregoing embodiments of the power module scheduling method, the present application also provides an embodiment of a power module scheduling device. As shown in Figure 8 the embodiment shown, the power module scheduling device 80 may include an acquisition module 801, a first determination module 802, a second determination module 803, and a scheduling module 804.

[0113] Among them, the acquisition module 801 is configured to acquire one or more health parameters of each power module among a plurality of power modules of a charging pile;

[0114] The first determination module 802 is configured to determine the total health degree corresponding to each power module based on one or more health parameters of each power module;

[0115] The second determination module 803 is configured to determine the scheduling order of the plurality of power modules based on the total health degree of each power module;

[0116] The scheduling module 804 is configured to schedule the power modules to charge a target device according to the scheduling order of the plurality of power modules.

[0117] In some embodiments of the present application, the first determination module 802 is specifically configured to respectively determine the health degree corresponding to each health parameter of each power module based on one or more health parameters of each power module; and determine the total health degree corresponding to each power module based on the health degree corresponding to each health parameter of each power module.

[0118] In some embodiments of the present application, the first determination module 802 is specifically configured to determine the sum of the target health parameters corresponding to the plurality of power modules based on the target health parameters of each power module among the plurality of power modules; and determine the target health degree corresponding to the target health parameter of each power module based on the target health parameter of each power module and the sum of the target health parameters.

[0119] In some embodiments of the present application, the first determination module 802 is specifically configured to acquire the weighting coefficient corresponding to each health parameter; and determine the total health degree of the power module based on the weighting coefficient corresponding to each health parameter and the health degree corresponding to the health parameter of the power module.

[0120] In some embodiments of the present application, the scheduling module 804 is specifically configured to determine the scheduling order of one or more available power modules among the plurality of power modules based on the scheduling order of the plurality of power modules; schedule the available power modules to charge the target device according to the scheduling order of the one or more available power modules; wherein, the available power module is a power module in an idle state among the plurality of power modules.

[0121] In some embodiments of the present application, the scheduling module 804 is specifically configured to determine new addresses of multiple power modules based on the scheduling order of the multiple power modules; when the charging pile starts charging, determine new addresses of one or more available power modules among the multiple power modules based on the new addresses of the multiple power modules; and schedule the available power modules to charge the target device in ascending order of the new addresses of the one or more available power modules.

[0122] In some embodiments of the present application, one or more health parameters include total output electric energy, temperature rise, and voltage fluctuation; the total output electric energy is the historical cumulative output electric energy of the power module, the temperature rise is the amount of temperature rise when the duration of maintaining the maximum power output during a single charging process of the power module to the target device reaches a preset duration; and the voltage fluctuation is the peak-to-peak voltage at the output end of the power factor correction circuit in the power module when the power module charges the target device at the maximum power.

[0123] For the beneficial technical effects corresponding to the exemplary embodiments of the above power module scheduling device 80, reference may be made to the corresponding beneficial technical effects in the above method embodiment section, which will not be elaborated herein.

[0124] Corresponding to the embodiments of the foregoing power module scheduling method, the present application also provides an embodiment of a charging device. Figure 9 The following is a schematic structural diagram of a charging device provided by an embodiment of the present application. As Figure 9 shown, the charging device 90 includes a charging pile 901 and a charging gun 902.

[0125] Among them, the charging pile 901 is coupled to the charging gun 902 and is configured to obtain one or more health parameters of each power module among the multiple power modules of the charging pile 901; determine the total health degree corresponding to each power module based on the one or more health parameters of each power module; determine the scheduling order of the multiple power modules based on the total health degree of each power module; and schedule the power modules to transmit a charging power signal to the charging gun 902 according to the scheduling order of the multiple power modules.

[0126] The charging gun 902 is coupled to the target device and is configured to transmit a charging power signal to the target device.

[0127] It should be noted that for the beneficial technical effects corresponding to the exemplary embodiments of the above charging device, reference may be made to the corresponding beneficial technical effects in the above method embodiment section, which will not be elaborated herein.

[0128] In addition to the above methods and devices, embodiments of the present application may 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 power module scheduling method of various embodiments of the present application described in the method embodiment part above.

[0129] The computer program product can be written in any combination of one or more programming languages to execute the program code for 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's computing device, partially on the user's device, executed as an independent software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0130] In addition, embodiments of the present application may also be a computer-readable storage medium, on which computer program instructions are stored, which, when run by a processor, cause the processor to execute the steps in the power module scheduling method of various embodiments of the present application described in the method embodiment part above.

[0131] The computer-readable storage medium may adopt any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium, for example but not limited to, includes electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or components, or any combination of the above. More specific examples (non-exhaustive list) of the readable storage medium include: electrical connections with one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above.

[0132] 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 purpose of illustration and easy understanding, rather than limitations. The above details do not limit the present application to necessarily adopt the above specific details to implement.

[0133] 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 modifications and variations.

[0134] 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 substitutions, 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 power module scheduling method, applied to a charging pile, characterized in that The method includes: Obtaining one or more health parameters of each power module among multiple power modules of the charging pile; Determining the total health degree corresponding to each power module based on the one or more health parameters of each power module; Determining the scheduling order of the multiple power modules based on the total health degree corresponding to each power module; Scheduling the power modules to charge a target device according to the scheduling order of the multiple power modules.

2. The method according to claim 1, wherein The determining the total health degree corresponding to each power module based on the one or more health parameters of each power module includes: Respectively determining the health degree corresponding to each health parameter of each power module based on the one or more health parameters of each power module; Determining the total health degree corresponding to each power module based on the health degree corresponding to each health parameter of each power module.

3. The method according to claim 2, wherein The respectively determining the health degree corresponding to each health parameter of each power module based on the one or more health parameters of each power module includes: Determining the total sum of target health parameters corresponding to the multiple power modules based on the target health parameters of each power module among the multiple power modules; Determining the target health degree corresponding to the target health parameter of each power module based on the target health parameter of each power module and the total sum of target health parameters.

4. The method according to claim 2, wherein The determining the total health degree corresponding to each power module based on the health degree corresponding to each health parameter of each power module includes: Obtaining the weighting coefficient corresponding to each health parameter; Determining the total health degree of the power module based on the weighting coefficient corresponding to each health parameter and the health degree corresponding to each health parameter of the power module.

5. The method according to any one of claims 1-4, characterized in that, The scheduling the power modules to charge a target device according to the scheduling order of the multiple power modules includes: Determining the scheduling order of one or more available power modules among the multiple power modules based on the scheduling order of the multiple power modules; wherein, the available power module is a power module in an idle state among the multiple power modules; Scheduling the available power modules to charge the target device according to the scheduling order of the one or more available power modules.

6. The method according to claim 5, characterized in that, The determining the scheduling order of one or more available power modules among the multiple power modules based on the scheduling order of the multiple power modules includes: Determining new addresses of the multiple power modules based on the scheduling order of the multiple power modules; Determining new addresses of one or more available power modules among the multiple power modules based on the new addresses of the multiple power modules. The scheduling the available power modules to charge the target device according to the scheduling order of the one or more available power modules includes: Scheduling the available power modules to charge the target device in ascending order of the new addresses of the one or more available power modules.

7. The method according to any one of claims 1 to 4, characterized in that The one or more health parameters include total output electrical energy, temperature rise, and voltage fluctuation; the total output electrical energy is the historical cumulative output electrical energy of the power module, the temperature rise is the amount of temperature increase when the duration of maintaining the maximum power output during a single charging process of the power module for the target device reaches a preset duration; the voltage fluctuation is the peak-to-peak voltage at the output end of the power factor correction circuit in the power module when the power module charges the target device at the maximum power.

8. The method according to claim 7, wherein The first weighting coefficient corresponding to the total output electrical energy is less than the second weighting coefficient corresponding to the temperature rise; the second weighting coefficient is less than the third weighting coefficient corresponding to the voltage fluctuation.

9. A charging pile, characterized in that, The charging pile includes: a controller and a plurality of power modules; The controller is configured to obtain one or more health parameters of each power module among the plurality of power modules of the charging pile; determine the total health degree corresponding to each power module based on the one or more health parameters of each power module; determine the scheduling order of the plurality of power modules based on the total health degree of each power module; and transmit a module call signal to the power module according to the scheduling order of the plurality of power modules. The plurality of power modules are configured to charge the target device in response to the module call signal.

10. A charging device, characterized in that, Comprising: A charging pile configured to obtain one or more health parameters of each power module among the plurality of power modules of the charging pile; determine the total health degree corresponding to each power module based on the one or more health parameters of each power module; determine the scheduling order of the plurality of power modules based on the total health degree of each power module; and schedule the power module to transmit charging power to the charging gun according to the scheduling order of the plurality of power modules. A charging gun coupled to the charging pile and configured to be coupled to the target device and transmit charging power to the target device.

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