Energy distribution method of charging pile and energy distribution device of charging pile

Abstract

The invention provides an energy distribution method of a charging pile and an energy distribution device of the charging pile, the charging pile is applied to a plurality of electric vehicles, the charging pile comprises a prepared number of power modules, and the method comprises the following steps: acquiring current state information and charging information of the electric vehicles under the condition that a preset condition is satisfied; at least according to the current state information and the charging information, the charging mode of the charging pile for the electric vehicles and the target number of the electric vehicles are determined, the process of charging the electric vehicles through the charging pile comprises multiple charging modes connected in sequence, and the different charging modes correspond to different charging voltages of the electric vehicles and different charging currents of the electric vehicles; the sum of the target numbers of the multiple electric vehicles is calculated, and the target number sum is obtained; and according to the preparation number and the target number sum, performing energy distribution on the charging piles according to the sequence of the charging modes so as to charge the electric vehicles in sequence. The technical problem that the power module distribution of the charging pile lacks flexibility is solved.

Description

Technical Field

[0001] The present application relates to the field of electric vehicles, and more specifically, to an energy distribution method for a charging stack, an energy distribution device for a charging stack, a computer-readable storage medium, and a computer program product. Background Art

[0002] Traditional charging piles have fixed power and are difficult to accommodate charging of multiple types of vehicles. The charging pile can integrate the power modules of multiple charging piles and power multiple charging guns at the same time. The number of power modules can be flexibly allocated according to the actual needs of the vehicle, which can meet the different power requirements of charging various types of vehicles and improve the utilization rate of power modules. The existing technical solution calculates the number of charging modules invested by detecting the charging needs of electric vehicles, and connects the modules in parallel to meet the charging current requirements of electric vehicles, thereby meeting the charging power requirements. At the same time, electric vehicle charging often adopts a two-stage solution of constant voltage and constant current. The voltage and current of battery charging often have a large range of variation, which makes the power module allocation of the charging pile lack flexibility.

[0003] Therefore, there is an urgent need for an energy distribution method for a charging stack that can solve the above problems. Summary of the invention

[0004] The main purpose of the present application is to provide an energy distribution method for a charging stack, an energy distribution device for a charging stack, a computer-readable storage medium and a computer program product, so as to at least solve the problem of lack of flexibility in power module allocation of the charging stack in the prior art.

[0005] According to one aspect of the present application, a method for distributing energy in a charging stack is provided, wherein the charging stack is applied to a plurality of electric vehicles, and the charging stack includes a prepared number of power modules, and the method includes: obtaining current state information and charging information of the electric vehicle under the condition that preset conditions are met, the preset conditions including at least one of the following: the distribution of the power modules of the charging stack is completed for a predetermined time, at least one of the electric vehicles is connected to the charging stack, and at least one of the electric vehicles is charged, the current state information is used to characterize the charging state of the electric vehicle corresponding to the current moment, and the charging information is used to characterize the charging state corresponding to the moment when the electric vehicle is charged; at least according to the current state information and the charging information Charging information, determining the charging mode of the charging stack for the electric vehicle and the target number of the electric vehicles, wherein the process of the charging stack charging the electric vehicle includes a plurality of the charging modes connected in sequence, different charging modes correspond to different charging voltages of the electric vehicles and charging currents of the electric vehicles, the target number is the number of the power modules providing charging current and charging voltage to one electric vehicle, and the charging mode and the target number correspond one-to-one; calculating the sum of the target numbers of the plurality of electric vehicles to obtain the sum of the target numbers; and distributing energy to the charging stack in the order of the charging modes according to the reserve number and the sum of the target numbers to charge each of the electric vehicles in sequence.

[0006] Optionally, when preset conditions are met, the current status information and charging information of the electric vehicle are obtained, including: obtaining the first charging voltage of the electric vehicle at the current moment and the first charging current of the electric vehicle at the current moment, to obtain the current status information; obtaining the second charging voltage corresponding to the electric vehicle at the moment when charging is completed and the second charging current corresponding to the electric vehicle at the moment when charging is completed, to obtain the charging information.

[0007] Optionally, the charging mode includes a first charging mode, a second charging mode, a third charging mode, a fourth charging mode and a fifth charging mode connected in sequence, and the charging mode of the charging stack for the electric vehicle is determined at least according to the current state information and the charging information, including: obtaining the maximum voltage of the electric vehicle under constant current charging to obtain the maximum voltage value, and obtaining the maximum current of the electric vehicle under constant voltage charging to obtain the maximum current value; when the electric vehicle is under constant current charging and the first charging voltage is greater than 0 and less than or equal to half of the maximum voltage value, determining that the charging mode of the charging stack for the electric vehicle is the first charging mode; when the electric vehicle is under constant current charging and the first charging voltage is greater than half of the maximum voltage value and and is less than or equal to the maximum voltage value, determine that the charging mode of the charging stack for the electric vehicle is the second charging mode; when the first charging voltage is greater than the maximum voltage value and less than or equal to the second charging voltage, determine that the charging mode of the charging stack for the electric vehicle is the third charging mode; when the electric vehicle is charged at the constant voltage and the first charging current is greater than half of the maximum current value and less than or equal to the maximum current value, determine that the charging mode of the charging stack for the electric vehicle is the fourth charging mode; when the electric vehicle is charged at the constant voltage and the first charging current is greater than 0 and less than or equal to half of the maximum current, determine that the charging mode of the charging stack for the electric vehicle is the fifth charging mode.

[0008] Optionally, the target number of the electric vehicles is determined based at least on the current status information and the charging information, including: obtaining a first number and a second number, wherein the first number is the number of power modules that provide the charging voltage to the electric vehicle, and the second number is the number of power modules that provide the charging current to the electric vehicle; and calculating the product of the first number and the second number to obtain the target number.

[0009] Optionally, obtaining the first quantity and the second quantity includes: according to the formula Calculate the first number N of the jth charging mode js , where V jmax is the maximum value of the charging voltage of the electric vehicle in the jth charging mode, V0 is the output voltage of one of the power modules, j=1, 2, 3, 4, 5, Used to represent rounding up; according to the formula Calculate the second number N of the jth charging mode jp , where I jmaxis the maximum value of the charging current of the electric vehicle in the jth charging mode, and I0 is the output current of one of the power modules.

[0010] Optionally, based on the sum of the reserve number and the target number, energy is distributed to the charging stack in the order of the charging mode to charge each of the electric vehicles in sequence, including: determining whether the reserve number is greater than or equal to the sum of the target numbers, and when the reserve number is greater than or equal to the sum of the target numbers, controlling the charging stack to charge all of the electric vehicles in sequence in the order of the charging mode; when the reserve number is less than the sum of the target numbers, controlling the charging stack to charge the first n electric vehicles in sequence in the order of the charging mode, wherein the sum of the target numbers of the first n electric vehicles is less than or equal to the reserve number, and n is a positive integer greater than 0.

[0011] Optionally, when the reserve number is less than the sum of the target numbers, after controlling the charging stack to charge the first n electric vehicles in sequence according to the order of the charging mode, the method further includes: calculating the difference between the sum of the target numbers of the first n electric vehicles and the reserve number to obtain a reserve difference; determining whether the reserve difference is greater than or equal to the first number of the n+1th electric vehicle, and when the reserve difference is greater than or equal to the first number of the n+1th electric vehicle, controlling the third number of power modules in the charging stack to charge the n+1th electric vehicle, wherein the first number is the number of power modules that provide the charging voltage to the electric vehicle, the third number is less than or equal to the reserve difference, the third number is the product of a predetermined number and a fourth number, the predetermined number is less than the first number, and the fourth number is the number of power modules that provide the charging current to the electric vehicle; when the reserve difference is less than the first number of the n+1th electric vehicle, controlling the charging stack not to charge the n+1th electric vehicle.

[0012] According to another aspect of the present application, there is provided an energy distribution device for a charging stack, the charging stack being applied to a plurality of electric vehicles, the charging stack comprising a prepared number of power modules, the device comprising: an acquisition unit for acquiring current state information and charging information of the electric vehicle under the condition that preset conditions are met, the preset conditions comprising at least one of the following: the distribution of the power modules of the charging stack is completed for a predetermined time, at least one of the electric vehicles is connected to the charging stack, and at least one of the electric vehicles is charged, the current state information being used to characterize the charging state of the electric vehicle corresponding to the current moment, and the charging information being used to characterize the charging state corresponding to the moment when the electric vehicle is charged; a determination unit for determining the current state information and the charging information based on at least the current state information and the charging state of the electric vehicle. Charging information, determining the charging mode of the charging stack for the electric vehicle and the target number of the electric vehicles, wherein the process of the charging stack charging the electric vehicle includes a plurality of the charging modes connected in sequence, different charging modes correspond to different charging voltages of the electric vehicles and charging currents of the electric vehicles, the target number is the number of the power modules providing charging current and charging voltage to one electric vehicle, and the charging mode and the target number correspond one to one; a calculation unit, used to calculate the sum of the target numbers of the plurality of electric vehicles to obtain the sum of the target numbers; an allocation unit, used to allocate energy to the charging stack according to the reserve number and the sum of the target numbers in the order of the charging modes so as to charge each of the electric vehicles in sequence.

[0013] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute any one of the methods described.

[0014] According to another aspect of the present application, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the steps of any one of the methods described are implemented.

[0015] The technical solution of the present application is applied to provide an energy distribution method of a charging stack, which is applied to multiple electric vehicles. The charging stack includes a prepared number of power modules. First, under the condition of meeting the preset conditions, the current state information and charging information of the electric vehicle are obtained; then, the charging mode of the charging stack for the electric vehicle and the target number of the electric vehicle are determined at least according to the current state information and the charging information. The process of the charging stack for charging the electric vehicle includes multiple charging modes connected in sequence, and the charging voltage and charging current of the electric vehicle corresponding to different charging modes are different; then, the sum of the target numbers of multiple electric vehicles is calculated to obtain the target number sum; finally, according to the prepared number and the target number sum, the energy of the charging stack is distributed in the order of the charging mode to charge each electric vehicle in turn. In this method, since the requirements for the charging voltage and charging current corresponding to each charging mode are different, the corresponding target number of power modules is used to charge the electric vehicle, so that each power module can operate in its efficient working range. Then, according to the order of the above-mentioned charging modes and the principle of first-come-first-served of electric vehicles, the charging stack is controlled to charge multiple electric vehicles. By centrally managing and flexibly allocating the number of power modules of the charging stack, when multiple vehicles are charging at the same time, they can be reasonably allocated according to the order of access time and the power capacity of the charging stack, that is, the reserve quantity, thereby optimizing the overall charging efficiency and the flexibility of the charging process, and solving the technical problem of lack of flexibility in the allocation of power modules of the charging stack in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A hardware structure block diagram of a mobile terminal for executing an energy distribution method for a charging stack provided in an embodiment of the present application is shown;

[0018] Figure 2 A schematic flow chart of an energy distribution method for a charging stack provided according to an embodiment of the present application is shown;

[0019] Figure 3 A schematic diagram of the process flow of five charging modes provided according to an embodiment of the present application is shown;

[0020] Figure 4 A structural block diagram of an energy distribution device for a charging stack provided according to an embodiment of the present application is shown.

[0021] The above drawings include the following reference numerals:

[0022] 102, processor; 104, memory; 106, transmission device; 108, input and output devices. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] As introduced in the background technology, the power module allocation of the charging stack in the prior art lacks flexibility. To solve the above problem, the embodiments of the present application provide an energy allocation method for a charging stack, an energy allocation device for a charging stack, a computer-readable storage medium and a computer program product.

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 1 is a hardware structure block diagram of a mobile terminal of a charging stack energy distribution method according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0029] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the energy distribution method of the charging stack in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-mentioned networks include but are not limited to the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. The above-mentioned specific examples of the network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0030] In this embodiment, a method for distributing energy for a charging stack running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0031] Figure 2 Flowchart of the energy distribution method of the charging stack according to the embodiment of the present application. Figure 2As shown, the charging stack is applied to a plurality of electric vehicles, the charging stack comprises a prepared number of power modules, and the method comprises the following steps:

[0032] Step S201, when the preset conditions are met, obtaining the current state information and charging information of the electric vehicle, the preset conditions including at least one of the following: the allocation of the power modules of the charging stack is completed for a predetermined time, at least one of the electric vehicles is connected to the charging stack, and at least one of the electric vehicles is charged, the current state information is used to characterize the charging state of the electric vehicle corresponding to the current moment, and the charging information is used to characterize the charging state corresponding to the moment when the electric vehicle is charged;

[0033] Specifically, the redistribution of the charging modules of the charging stack is mainly based on the change of charging demand, the change of the module working efficiency range, the flexible allocation of multi-vehicle charging and the consideration of energy optimization management. During the charging process of electric vehicles, the voltage and required current of the battery will change over time. Specifically, the battery requires a higher current and a lower voltage at the beginning of charging, and as the battery power increases, the required voltage gradually rises to a constant value, and the current gradually decreases. Therefore, in order to adapt to this nonlinear change in the charging process of electric vehicle batteries, it is necessary to reconfigure the modules of the charging stack according to the current state of the battery (i.e., voltage and current requirements) to ensure that each module can work in the optimal state. The charging module (i.e., the above-mentioned power module) works most efficiently within a specific voltage and current output range. If the charging demand of the electric vehicle causes the module to work in an inefficient range (such as a light load state), it will affect the charging efficiency and the service life of the module. By dynamically adjusting the connection mode of the module (series or parallel), the module can be made to work at a voltage and current point closer to its efficient working range, thereby improving the overall charging efficiency. The charging stack may charge multiple electric vehicles at the same time, and the battery type, capacity, and charging status of each vehicle may be different, resulting in different charging power requirements. When a new car is connected or a car completes charging, the number of available modules in the charging stack will change, and the modules need to be reallocated to accommodate the charging needs of all vehicles, ensuring that each vehicle can obtain the necessary charging power while maximizing the utilization of the modules and the efficiency of the entire charging stack. The energy management strategy of the charging stack needs to consider the charging needs of all connected vehicles and the power capacity of the charging stack itself to achieve the best allocation of resources. By reallocating modules periodically or when triggered by specific events (such as vehicle connection or charging completion), the charging process can be continuously optimized to ensure that the energy of the charging stack is used effectively and flexibly and to avoid waste of resources.

[0034] Step S202, determining the charging mode of the electric vehicle and the target number of the electric vehicles according to at least the current state information and the charging information, wherein the charging mode of the electric vehicle by the charging stack includes a plurality of charging modes connected in sequence, and different charging modes correspond to different charging voltages and charging currents of the electric vehicles, and the target number is the number of the power modules that provide charging current and charging voltage to one electric vehicle, and the charging modes and the target number correspond one to one;

[0035] Specifically, according to the changes in charging current and charging voltage of electric vehicles during charging, multiple charging modes connected end to end are determined, and the end time of the previous charging mode is the start time of the next charging mode. The calculation of the required number of charging modules requires considering the voltage and current output capacity of a single module of the charging stack, as well as the voltage and current required by the electric vehicle in the current charging mode.

[0036] Step S203, calculating the sum of the target numbers of the plurality of electric vehicles to obtain a target number sum;

[0037] Specifically, in order to realize simultaneous charging of multiple vehicles, it is necessary to calculate the target number of each vehicle and obtain the total number of power modules required.

[0038] Step S204 , according to the above-mentioned preparation quantity and the above-mentioned target quantity, energy is distributed to the above-mentioned charging stack in the order of the above-mentioned charging mode to charge each of the above-mentioned electric vehicles in turn.

[0039] Specifically, the matrix switch network can be switched to reconstruct the charging stack topology to charge all electric vehicles, wherein the matrix switch network refers to connecting multiple switches together using a matrix arrangement to achieve the purpose of multi-way switch control.

[0040] Through this embodiment, a method for distributing energy of a charging stack is provided. The charging stack is applied to multiple electric vehicles. The charging stack includes a prepared number of power modules. First, under the condition of satisfying preset conditions, the current state information and charging information of the electric vehicle are obtained; then, the charging mode of the charging stack for the electric vehicle and the target number of the electric vehicle are determined at least according to the current state information and the charging information. The charging process of the charging stack for the electric vehicle includes multiple charging modes connected in sequence. The charging voltage and the charging current of the electric vehicle corresponding to different charging modes are different; then, the sum of the target numbers of multiple electric vehicles is calculated to obtain the target number sum; finally, according to the prepared number and the target number sum, the energy of the charging stack is distributed in the order of the charging mode to charge each electric vehicle in turn. In this method, since the requirements for the charging voltage and charging current corresponding to each charging mode are different, the corresponding target number of power modules is used to charge the electric vehicle, so that each power module can operate in its efficient working range. Then, according to the order of the above-mentioned charging modes and the principle of first-come-first-served of electric vehicles, the charging stack is controlled to charge multiple electric vehicles. By centrally managing and flexibly allocating the number of power modules of the charging stack, when multiple vehicles are charging at the same time, they can be reasonably allocated according to the order of access time and the power capacity of the charging stack, that is, the reserve quantity, thereby optimizing the overall charging efficiency and the flexibility of the charging process, and solving the technical problem of lack of flexibility in the allocation of power modules of the charging stack in the prior art.

[0041] In the specific implementation process, the above step S201 can be implemented by the following steps: step S2011, obtaining the first charging voltage of the above electric vehicle at the above current moment and the first charging current of the above electric vehicle at the above current moment, and obtaining the above current state information; step S2012, obtaining the second charging voltage corresponding to the moment when the above electric vehicle is charged and the second charging current corresponding to the moment when the above electric vehicle is charged, and obtaining the above charging information. This method can further quickly obtain the current state information and charging information of the above electric vehicle.

[0042] Specifically, the charging needs of all electric vehicles currently connected to the charging pile are first detected, and the current status information of the electric vehicle battery, that is, the charging voltage V1 and charging current I2 required for the current charging, as well as the voltage V2 and current I2 required for the battery to be fully charged, are obtained through communication, and the battery status is monitored in real time.

[0043] In order to further achieve optimal control of charging of electric vehicles, the above-mentioned charging mode includes a first charging mode, a second charging mode, a third charging mode, a fourth charging mode and a fifth charging mode connected in sequence. The above-mentioned step S202 of the present application can be implemented by the following steps: step S2021, obtaining the maximum voltage of the above-mentioned electric vehicle under constant current charging to obtain the maximum voltage value, and obtaining the maximum current of the above-mentioned electric vehicle under constant voltage charging to obtain the maximum current value; step S2022, when the above-mentioned electric vehicle is under the above-mentioned constant current charging and the above-mentioned first charging voltage is greater than 0 and less than or equal to half of the above-mentioned maximum voltage value, determining that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned first charging mode; step S2023, when the above-mentioned electric vehicle is under the above-mentioned constant current charging and the above-mentioned first charging voltage is greater than half of the above-mentioned maximum voltage value and and is less than or equal to the above-mentioned maximum voltage value, determine that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned second charging mode; step S2024, when the above-mentioned first charging voltage is greater than the above-mentioned maximum voltage value and less than or equal to the above-mentioned second charging voltage, determine that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned third charging mode; step S2025, when the above-mentioned electric vehicle is charged at the above-mentioned constant voltage and the above-mentioned first charging current is greater than half of the above-mentioned maximum current value and less than or equal to the above-mentioned maximum current value, determine that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned fourth charging mode; step S2026, when the above-mentioned electric vehicle is charged at the above-mentioned constant voltage and the above-mentioned first charging current is greater than 0 and less than or equal to half of the above-mentioned maximum current, determine that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned fifth charging mode.

[0044] Specifically, the battery charging is re-divided into five charging modes, namely, a first charging mode, a second charging mode, a third charging mode, a fourth charging mode and a fifth charging mode, which are connected in sequence according to the voltage and current. Figure 3 As shown, the current required for constant current charging is I c The maximum charging voltage required is V Imax , the voltage required for constant voltage charging is V c and its maximum charging current is I Vmax ; V out and I out are the charging current of the charging stack to the electric vehicle. Charging mode I (i.e. the first charging mode) is from the time the electric vehicle is connected to the charging stack to the time the charging voltage of the electric vehicle rises to half of the maximum charging voltage required for constant current charging (i.e. V out =V Imax / 2) ends. Charging mode II (i.e., the second charging mode) starts from the end of charging mode I until the charging voltage of the electric vehicle rises. The maximum charging voltage (V out =Vcmax ), and charging mode II starts from time t1 and ends at time t2. Charging mode III (i.e. the third charging mode) starts from the end of charging mode II to the constant charging voltage (V out =V c ) when charging mode III ends. Charging mode IV (i.e. the fourth charging mode) starts from the end of charging mode III until the maximum charging current required for constant voltage charging of the electric vehicle reaches half (I out =I vmax / 2), charging mode II starts from time t1 and ends at time t2. Charging mode V (i.e. the fifth charging mode) starts from the end of charging mode IV until the electric vehicle is fully charged.

[0045] The above step S202 can also be implemented in other ways, for example: step S2027, obtaining a first quantity and a second quantity, wherein the first quantity is the quantity of power modules that provide the above charging voltage to the above electric vehicle, and the second quantity is the quantity of power modules that provide the above charging current to the above electric vehicle; step S2028, calculating the product of the above first quantity and the above second quantity to obtain the above target quantity. This method can further quickly determine the target quantity of the above electric vehicles.

[0046] Specifically, when charging the battery, the charging stack provides a suitable voltage through the series power modules and provides a suitable current through the parallel power modules.

[0047] In some embodiments, the above step S2027 can be implemented by the following steps: Step S20271, according to the formula Calculate the first number N of the jth charging mode js , where V jmax is the maximum value of the charging voltage of the electric vehicle in the jth charging mode, V0 is the output voltage of one of the power modules, j=1, 2, 3, 4, 5, Used to represent rounding up; Step S20272, according to the formula Calculate the second number N of the jth charging mode jp , where I jmax is the maximum value of the charging current of the electric vehicle in the jth charging mode, and I0 is the output current of one of the power modules. The method can further quickly obtain the first quantity and the second quantity.

[0048] Specifically, in charging mode I, N 1s The charging modules are connected in series to form a medium module. 1p The modules are connected in parallel to form an N 1s ×N 1pThe large module composed of a charging module charges the electric vehicle; in charging mode II, the N 2s The charging modules are connected in series to form a medium module. 2p The modules are connected in parallel to form an N 2s ×N 2p The large module composed of a charging module charges the electric vehicle; in charging mode III, the N 3s The charging modules are connected in series to form a medium module. 3p The modules are connected in parallel to form an N 3s ×N 3p The large module composed of a charging module charges the electric vehicle; in charging mode IV, the N 4s The charging modules are connected in series to form a medium module. 4p The modules are connected in parallel to form a 4s ×N 4p The large module composed of a charging module charges the electric vehicle. In charging mode V, firstly 5s The charging modules are connected in series to form a medium module. 5p The modules are connected in parallel to form a 5s ×N 5p A large module consisting of a charging module is used to charge electric vehicles.

[0049] In some embodiments, the above step S204 can be specifically implemented by the following steps: step S2041, determining whether the above reserve number is greater than or equal to the sum of the above target numbers, and if the above reserve number is greater than or equal to the sum of the above target numbers, controlling the above charging stack to charge all the above electric vehicles in sequence according to the order of the above charging mode; step S2042, if the above reserve number is less than the sum of the above target numbers, controlling the above charging stack to charge the first n electric vehicles in sequence according to the order of the above charging mode, wherein the sum of the above target numbers of the first n electric vehicles is less than or equal to the above reserve number, and n is a positive integer greater than 0. This method can further realize the centralized management and flexible allocation of the energy of the charging stack.

[0050] Specifically, the number of modules N of the charging stack itself is not less than the number of modules N required for optimal charging of all electric vehicles at this time. 总 , that is, N ≥ N 总 . Then each electric vehicle is optimally charged according to the intelligent charging method. The number of modules N of the charging pile itself is less than the number of modules N required for optimal charging of all electric vehicles at this time 总 , that is, N<N 总 At this time, according to the first-come-first-served principle, the first n electric vehicles that can be loaded are given priority for optimal charging.

[0051] After the above step S2042, the method further includes: step S2043, calculating the difference between the sum of the above target numbers of the above first n electric vehicles and the above reserve number to obtain the reserve difference; step S2044, determining whether the above reserve difference is greater than or equal to the first number of the n+1 electric vehicles, and in the case where the above reserve difference is greater than or equal to the first number of the above n+1 electric vehicles, controlling the third number of the above power modules in the above charging stack to charge the above n+1 electric vehicles, wherein the above first number is the number of power modules providing the above charging voltage to the above electric vehicles, the above third number is less than or equal to the above reserve difference, the above third number is the product of the predetermined number and the fourth number, the above predetermined number is less than the above first number, and the above fourth number is the number of power modules providing the above charging current to the above electric vehicles; step S2045, in the case where the above reserve difference is less than the first number of the above n+1 electric vehicles, controlling the above charging stack not to charge the above n+1 electric vehicles. This method can further realize the centralized management and flexible allocation of the energy of the charging stack.

[0052] Specifically, if the number of remaining modules N 总 -N can meet the charging voltage requirement of the n1+1th electric vehicle in series, but is not enough to achieve optimal charging of the n+1th electric vehicle (i.e., the idle modules can provide enough voltage in series, but the number is not enough to provide enough voltage and current at the same time), so the n+1th electric vehicle will be charged slowly, and the n+2th electric vehicle will start to wait in line. 总 -N can be connected in series but cannot meet the charging voltage requirement of the n+1th electric car, so the electric car starts waiting in line from the n+1th electric car.

[0053] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the energy distribution method of the charging stack of the present application will be described in detail below in combination with specific embodiments.

[0054] Take a flexible charging stack with 50 charging modules, with cars A, B, C, and D being charged. At a certain moment, cars A, B, C, and D are in their corresponding charging modes according to their charging needs, namely charging mode II, charging mode II, charging mode IV, and charging mode V. (Note that different electric vehicles may not have the same charging needs in the same charging mode, which is determined by the different models of batteries of each electric vehicle.) The number of charging modules they need is 3×4=12, 4×4=16, 2×4=8, and 1×5=5 (the number of series groups is in front, the number of parallel groups is behind, and the number of modules after the equal sign is the total number). At this time, the total number of modules required for electric vehicles is 12+16+8+5=41.

[0055] Example 1

[0056] After time t, the charging mode of each charging port is calculated according to the intelligent charging method to reallocate the modules of the charging stack. At this time, car A enters charging mode III, car B remains in charging mode II, car C enters charging mode V, and car D remains in charging mode V. At this time, the module demand becomes 3×5=15; 4×4=16; 1×4=4; 1×5=5, and the total 15+16+4+5=40<50 belongs to case 1. Therefore, the switching matrix network reconstructs the charging stack topology cars A~D for optimal charging.

[0057] Example 2

[0058] If time t has not passed, but a new car E is connected to the charging pile and issues a charging demand, the charging pile modules need to be redistributed through the intelligent charging method and the first-come-first-served principle. At this time, cars A~B are still in the original charging mode, and car E is in charging mode I, which requires 4×2=8 charging modules. At this time, the demand for charging modules of all electric vehicles is 12+16+8+5+8=49<50, which belongs to case 1. Therefore, the switching matrix network reconstructs the charging pile topology of cars A~E for optimal charging.

[0059] Example 3

[0060] If time t has not passed, but a new car E is connected to the charging pile and issues a charging demand, the charging pile modules need to be redistributed through the intelligent charging method and the first-come-first-served principle. At this time, cars A~D are still in the original charging mode, and car E is in charging mode II and requires 4×3=12 charging modules. At this time, the demand for charging modules of all electric vehicles is 12+16+8+5+12=53>50, of which cars A~D only need 40 charging modules, so there are 10 idle charging modules, which is greater than the number of charging modules required by the charging voltage of car E, which belongs to case 2. Therefore, according to the first-come-first-served principle, the switching matrix network reconstructs the charging pile topology, and cars A~D are given priority for optimal charging, and car E is charged slowly using 3×3=9 charging modules.

[0061] Example 4

[0062] If time t has not passed, but a new car E is connected to the charging pile and issues a charging demand, the charging pile modules need to be redistributed through the intelligent charging method and the first-come-first-served principle. At this time, cars C and D are still in the original charging mode, and cars A and B enter charging mode III with charging demands of 3×5=15 and 4×5=20 respectively. Car E is in charging mode II and requires 4×3=12 charging modules. At this time, the demand for all electric vehicle charging modules is 15+20+8+5+12=60>50, and the number of charging modules required for cars A~D is 15+20+8+5=48<50, but the remaining 2 idle modules are not enough to charge car E slowly, which belongs to situation 3. Therefore, according to the first-come-first-served principle, the switching matrix network reconstructs the charging pile topology, and cars A~D are given priority for optimal charging, and car E waits in line.

[0063] Example 5

[0064] If the charging pile cars A~D and car E are in the charging state in Example 3, and the charging of car D is completed before time t has passed. At this time, the charging pile modules are redistributed through the intelligent charging method and the first-come-first-served principle. At this time, cars A~C and car E are still in the previous charging mode. At this time, the total demand for charging modules is 12+16+8+12=48<50, which belongs to case 1. The switching matrix network reconstructs the charging pile topology cars A, B, C, and E for optimal charging.

[0065] The embodiment of the present application also provides an energy distribution device for a charging stack. It should be noted that the energy distribution device for a charging stack of the embodiment of the present application can be used to execute the energy distribution method for a charging stack provided in the embodiment of the present application. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and those that have been described will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0066] The energy distribution device of the charging stack provided in the embodiment of the present application is introduced below.

[0067] Figure 4 Schematic diagram of the energy distribution device of the charging stack according to the embodiment of the present application. Figure 4 As shown, the charging stack is applied to a plurality of electric vehicles, and the charging stack includes a prepared number of power modules. The device includes:

[0068] The acquisition unit 10 is used to acquire the current state information and charging information of the electric vehicle when the preset conditions are met, the preset conditions including at least one of the following: the allocation of the power modules of the charging stack is completed for a predetermined time, at least one of the electric vehicles is connected to the charging stack, and at least one of the electric vehicles is charged, the current state information is used to represent the charging state of the electric vehicle corresponding to the current moment, and the charging information is used to represent the charging state of the electric vehicle corresponding to the moment when the charging is completed;

[0069] Specifically, the redistribution of the charging modules of the charging stack is mainly based on the change of charging demand, the change of the module working efficiency range, the flexible allocation of multi-vehicle charging and the consideration of energy optimization management. During the charging process of electric vehicles, the voltage and required current of the battery will change over time. Specifically, the battery requires a higher current and a lower voltage at the beginning of charging, and as the battery power increases, the required voltage gradually rises to a constant value, and the current gradually decreases. Therefore, in order to adapt to this nonlinear change in the charging process of electric vehicle batteries, it is necessary to reconfigure the modules of the charging stack according to the current state of the battery (i.e., voltage and current requirements) to ensure that each module can work in the optimal state. The charging module (i.e., the above-mentioned power module) works most efficiently within a specific voltage and current output range. If the charging demand of the electric vehicle causes the module to work in an inefficient range (such as a light load state), it will affect the charging efficiency and the service life of the module. By dynamically adjusting the connection mode of the module (series or parallel), the module can be made to work at a voltage and current point closer to its efficient working range, thereby improving the overall charging efficiency. The charging stack may charge multiple electric vehicles at the same time, and the battery type, capacity, and charging status of each vehicle may be different, resulting in different charging power requirements. When a new car is connected or a car completes charging, the number of available modules in the charging stack will change, and the modules need to be reallocated to accommodate the charging needs of all vehicles, ensuring that each vehicle can obtain the necessary charging power while maximizing the utilization of the modules and the efficiency of the entire charging stack. The energy management strategy of the charging stack needs to consider the charging needs of all connected vehicles and the power capacity of the charging stack itself to achieve the best allocation of resources. By reallocating modules periodically or when triggered by specific events (such as vehicle connection or charging completion), the charging process can be continuously optimized to ensure that the energy of the charging stack is used effectively and flexibly and to avoid waste of resources.

[0070] The determination unit 20 is used to determine the charging mode of the electric vehicle by the charging stack and the target number of the electric vehicles according to at least the current state information and the charging information, wherein the process of the electric vehicle being charged by the charging stack includes a plurality of the charging modes connected in sequence, and different charging modes correspond to different charging voltages and charging currents of the electric vehicles, and the target number is the number of the power modules that provide charging current and charging voltage to one electric vehicle, and the charging modes and the target number correspond one to one;

[0071] Specifically, according to the changes in charging current and charging voltage of electric vehicles during charging, multiple charging modes connected end to end are determined, and the end time of the previous charging mode is the start time of the next charging mode. The calculation of the required number of charging modules requires considering the voltage and current output capacity of a single module of the charging stack, as well as the voltage and current required by the electric vehicle in the current charging mode.

[0072] A calculation unit 30 is used to calculate the sum of the target numbers of the plurality of electric vehicles to obtain the target sum;

[0073] Specifically, in order to realize simultaneous charging of multiple vehicles, it is necessary to calculate the target number of each vehicle and obtain the total number of power modules required.

[0074] The allocating unit 40 is used to allocate energy to the charging stack according to the above-mentioned preparation quantity and the above-mentioned target quantity in the order of the above-mentioned charging mode so as to charge each of the above-mentioned electric vehicles in sequence.

[0075] Specifically, the matrix switch network can be switched to reconstruct the charging stack topology to charge all electric vehicles, wherein the matrix switch network refers to connecting multiple switches together using a matrix arrangement to achieve the purpose of multi-way switch control.

[0076] Through this embodiment, an energy distribution device of a charging stack is provided. The charging stack is applied to multiple electric vehicles. The charging stack includes a prepared number of power modules. The acquisition unit acquires the current state information and charging information of the electric vehicle under the condition of meeting the preset conditions; the determination unit determines the charging mode of the electric vehicle and the target number of the electric vehicle based on at least the current state information and the charging information. The process of completing the charging of the electric vehicle includes multiple charging modes connected in sequence. The charging voltage and charging current of the electric vehicle corresponding to different charging modes are different; the calculation unit calculates the sum of the target numbers of multiple electric vehicles to obtain the target number sum; the control unit controls the charging stack to charge each electric vehicle in sequence according to the order of the charging mode according to the prepared number and the target number sum. In the device, since the requirements for the charging voltage and charging current corresponding to each charging mode are different, the corresponding target number of power modules are used to charge the electric vehicle, so that each power module can operate in its efficient working range. Then, according to the order of the above charging modes and the principle of first-come-first-served of electric vehicles, the charging stack is controlled to charge multiple electric vehicles. By centrally managing and flexibly allocating the number of power modules of the charging stack, when multiple vehicles are charging at the same time, they can be reasonably allocated according to the order of access time and the power capacity of the charging stack, that is, the reserve quantity, thereby optimizing the overall charging efficiency and the flexibility of the charging process, and solving the technical problem of lack of flexibility in the allocation of power modules of the charging stack in the prior art.

[0077] In the specific implementation process, the acquisition unit includes a first acquisition module and a second acquisition module, wherein the first acquisition module is used to acquire the first charging voltage of the electric vehicle at the current moment and the first charging current of the electric vehicle at the current moment to obtain the current state information; the second acquisition module is used to acquire the second charging voltage corresponding to the electric vehicle at the moment when charging is completed and the second charging current corresponding to the electric vehicle at the moment when charging is completed to obtain the charging information. The device can further quickly acquire the current state information and charging information of the electric vehicle.

[0078] Specifically, the charging needs of all electric vehicles currently connected to the charging pile are first detected, and the current status information of the electric vehicle battery, that is, the charging voltage V1 and charging current I2 required for the current charging, as well as the voltage V2 and current I2 required for the battery to be fully charged, are obtained through communication, and the battery status is monitored in real time.

[0079] In order to further achieve optimal control of charging of electric vehicles, the above-mentioned charging mode includes a first charging mode, a second charging mode, a third charging mode, a fourth charging mode and a fifth charging mode connected in sequence, and the above-mentioned determination unit of the present application includes a third acquisition module, a first determination module, a second determination module, a third determination module, a fourth determination module and a fifth determination module, wherein the third acquisition module is used to obtain the maximum voltage of the above-mentioned electric vehicle under constant current charging to obtain the maximum voltage value, and to obtain the maximum current of the above-mentioned electric vehicle under constant voltage charging to obtain the maximum current value; the first determination module is used to determine that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned first charging mode when the above-mentioned electric vehicle is under the above-mentioned constant current charging and the above-mentioned first charging voltage is greater than 0 and less than or equal to half of the above-mentioned maximum voltage value; the second determination module is used to determine that the charging mode of the above-mentioned electric vehicle under the above-mentioned constant current charging and the above-mentioned first charging voltage is greater than 0 and less than or equal to half of the above-mentioned maximum voltage value. When the charging voltage is greater than half of the above-mentioned maximum voltage value and is less than or equal to the above-mentioned maximum voltage value, the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is determined to be the above-mentioned second charging mode; the third determination module is used to determine that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned third charging mode when the above-mentioned first charging voltage is greater than the above-mentioned maximum voltage value and is less than or equal to the above-mentioned second charging voltage; the fourth determination module is used to determine that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned fourth charging mode when the above-mentioned electric vehicle is charged at the above-mentioned constant voltage and the above-mentioned first charging current is greater than half of the above-mentioned maximum current value and is less than or equal to the above-mentioned maximum current value; the fifth determination module is used to determine that the charging mode of the above-mentioned charging stack for the above-mentioned electric vehicle is the above-mentioned fifth charging mode when the above-mentioned electric vehicle is charged at the above-mentioned constant voltage and the above-mentioned first charging current is greater than 0 and is less than or equal to half of the above-mentioned maximum current.

[0080] Specifically, the battery charging is re-divided into five charging modes, namely, a first charging mode, a second charging mode, a third charging mode, a fourth charging mode and a fifth charging mode, which are connected in sequence according to the voltage and current. Figure 3 As shown, the current required for constant current charging is I c The maximum charging voltage required is V Imax , the voltage required for constant voltage charging is V c and its maximum charging current is I Vmax ; V out and I out are the charging current of the charging stack to the electric vehicle. Charging mode I (i.e. the first charging mode) is from the time the electric vehicle is connected to the charging stack to the time the charging voltage of the electric vehicle rises to half of the maximum charging voltage required for constant current charging (i.e. V out =V Imax / 2) ends. Charging mode II (i.e., the second charging mode) starts from the end of charging mode I until the charging voltage of the electric vehicle rises. The maximum charging voltage (V out =V cmax ), and charging mode II starts from time t1 and ends at time t2. Charging mode III (i.e. the third charging mode) starts from the end of charging mode II to the constant charging voltage (V out =V c ) when charging mode III ends. Charging mode IV (i.e. the fourth charging mode) starts from the end of charging mode III until the maximum charging current required for constant voltage charging of the electric vehicle reaches half (I out =I vmax / 2), charging mode II starts from time t1 and ends at time t2. Charging mode V (i.e. the fifth charging mode) starts from the end of charging mode IV until the electric vehicle is fully charged.

[0081] The determination unit further includes a fourth acquisition module and a first calculation module, wherein the fourth acquisition module is used to acquire a first quantity and a second quantity, wherein the first quantity is the quantity of power modules providing the charging voltage to the electric vehicle, and the second quantity is the quantity of power modules providing the charging current to the electric vehicle; the first calculation module is used to calculate the product of the first quantity and the second quantity to obtain the target quantity. The device can further quickly determine the target quantity of the electric vehicles.

[0082] Specifically, when charging the battery, the charging stack provides a suitable voltage through the series power modules and provides a suitable current through the parallel power modules.

[0083] In some embodiments, the fourth acquisition module includes a first calculation submodule and a second calculation submodule, wherein the first calculation submodule is used to calculate the value of Calculate the first number N of the jth charging mode js , where V jmax is the maximum value of the charging voltage of the electric vehicle in the jth charging mode, V0 is the output voltage of one of the power modules, j=1, 2, 3, 4, 5, It is used to represent rounding up; the second calculation submodule is used according to the formula Calculate the second number N of the jth charging mode jp , where I jmax is the maximum value of the charging current of the electric vehicle in the jth charging mode, and I0 is the output current of one of the power modules. The device can further quickly obtain the first quantity and the second quantity.

[0084] Specifically, in charging mode I, N 1s The charging modules are connected in series to form a medium module. 1p The modules are connected in parallel to form an N 1s ×N 1p The large module composed of a charging module charges the electric vehicle; in charging mode II, the N 2s The charging modules are connected in series to form a medium module. 2p The modules are connected in parallel to form an N 2s ×N 2p The large module composed of a charging module charges the electric vehicle; in charging mode III, the N 3s The charging modules are connected in series to form a medium module. 3p The modules are connected in parallel to form an N 3s ×N 3p The large module composed of a charging module charges the electric vehicle; in charging mode IV, the N 4s The charging modules are connected in series to form a medium module. 4p The modules are connected in parallel to form a 4s ×N 4p The large module composed of a charging module charges the electric vehicle. In charging mode V, firstly 5s The charging modules are connected in series to form a medium module. 5p The modules are connected in parallel to form a 5s ×N 5p A large module consisting of a charging module is used to charge electric vehicles.

[0085] In some embodiments, the control unit includes a sixth determination module and a first control module, wherein the sixth determination module is used to determine whether the above-mentioned reserve number is greater than or equal to the sum of the above-mentioned target numbers, and when the above-mentioned reserve number is greater than or equal to the sum of the above-mentioned target numbers, the charging stack is controlled to charge all the above-mentioned electric vehicles in sequence according to the order of the above-mentioned charging mode; the first control module is used to control the charging stack to charge the first n above-mentioned electric vehicles in sequence according to the order of the above-mentioned charging mode when the above-mentioned reserve number is less than the sum of the above-mentioned target numbers, wherein the sum of the above-mentioned target numbers of the first n above-mentioned electric vehicles is less than or equal to the above-mentioned reserve number, and n is a positive integer greater than 0. The device can further realize the centralized management and flexible allocation of the energy of the charging stack.

[0086] Specifically, the number of modules N of the charging stack itself is not less than the number of modules N required for optimal charging of all electric vehicles at this time. 总 , that is, N ≥ N 总. Then each electric vehicle is optimally charged according to the intelligent charging method. The number of modules N of the charging pile itself is less than the number of modules N required for optimal charging of all electric vehicles at this time 总 , that is, N<N 总 At this time, according to the first-come-first-served principle, the first n electric vehicles that can be loaded are given priority for optimal charging.

[0087] The control unit further includes a second calculation module, a seventh determination module and a second control module, wherein the second calculation module is used to calculate the difference between the sum of the target number of the first n electric vehicles and the reserve number to obtain the reserve difference; the seventh determination module is used to determine whether the reserve difference is greater than or equal to the first number of the n+1 electric vehicles, and when the reserve difference is greater than or equal to the first number of the n+1 electric vehicles, the third number of power modules in the charging stack is controlled to charge the n+1 electric vehicle, wherein the first number is the number of power modules providing the charging voltage to the electric vehicle, the third number is less than or equal to the reserve difference, the third number is the product of the predetermined number and the fourth number, the predetermined number is less than the first number, and the fourth number is the number of power modules providing the charging current to the electric vehicle; the second control module is used to control the charging stack not to charge the n+1 electric vehicle when the reserve difference is less than the first number of the n+1 electric vehicles. The device can further realize the centralized management and flexible allocation of the energy of the charging stack.

[0088] Specifically, if the number of remaining modules N 总 -N can meet the charging voltage requirement of the n1+1th electric vehicle in series, but is not enough to achieve optimal charging of the n+1th electric vehicle (i.e., the idle modules can provide enough voltage in series, but the number is not enough to provide enough voltage and current at the same time), so the n+1th electric vehicle will be charged slowly, and the n+2th electric vehicle will start to wait in line. 总 -N can be connected in series but cannot meet the charging voltage requirement of the n+1th electric car, so the electric car starts waiting in line from the n+1th electric car.

[0089] The energy distribution device of the charging stack includes a processor and a memory. The acquisition unit, determination unit, calculation unit, and distribution unit are all stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions. The modules are all located in the same processor; or, the modules are located in different processors in any combination.

[0090] The processor includes a kernel, which calls the corresponding program unit from the memory. One or more kernels can be set, and the charging stack can be controlled by adjusting kernel parameters.

[0091] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0092] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the energy distribution method of the charging stack.

[0093] An embodiment of the present invention provides a processor, and the processor is used to run a program, wherein the energy distribution method of the charging stack is executed when the program is run.

[0094] An embodiment of the present invention provides a device, the device including a processor, a memory, and a program stored in the memory and executable on the processor, and when the processor executes the program, at least the following steps are implemented:

[0095] Step S201, when the preset conditions are met, obtaining the current state information and charging information of the electric vehicle, the preset conditions including at least one of the following: the allocation of the power modules of the charging stack is completed for a predetermined time, at least one of the electric vehicles is connected to the charging stack, and at least one of the electric vehicles is charged, the current state information is used to characterize the charging state of the electric vehicle corresponding to the current moment, and the charging information is used to characterize the charging state corresponding to the moment when the electric vehicle is charged;

[0096] Step S202, determining the charging mode of the electric vehicle and the target number of the electric vehicles according to at least the current state information and the charging information, wherein the charging mode of the electric vehicle by the charging stack includes a plurality of charging modes connected in sequence, and different charging modes correspond to different charging voltages and charging currents of the electric vehicles, and the target number is the number of the power modules that provide charging current and charging voltage to one electric vehicle, and the charging modes and the target number correspond one to one;

[0097] Step S203, calculating the sum of the target numbers of the plurality of electric vehicles to obtain a target number sum;

[0098] Step S204 , according to the above-mentioned preparation quantity and the above-mentioned target quantity, energy is distributed to the above-mentioned charging stack in the order of the above-mentioned charging mode to charge each of the above-mentioned electric vehicles in turn.

[0099] The devices in this article can be servers, PCs, PADs, mobile phones, etc.

[0100] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program for initializing at least the following method steps:

[0101] Step S201, when the preset conditions are met, obtaining the current state information and charging information of the electric vehicle, the preset conditions including at least one of the following: the allocation of the power modules of the charging stack is completed for a predetermined time, at least one of the electric vehicles is connected to the charging stack, and at least one of the electric vehicles is charged, the current state information is used to characterize the charging state of the electric vehicle corresponding to the current moment, and the charging information is used to characterize the charging state corresponding to the moment when the electric vehicle is charged;

[0102] Step S202, determining the charging mode of the electric vehicle and the target number of the electric vehicles according to at least the current state information and the charging information, wherein the charging mode of the electric vehicle by the charging stack includes a plurality of charging modes connected in sequence, and different charging modes correspond to different charging voltages and charging currents of the electric vehicles, and the target number is the number of the power modules that provide charging current and charging voltage to one electric vehicle, and the charging modes and the target number correspond one to one;

[0103] Step S203, calculating the sum of the target numbers of the plurality of electric vehicles to obtain a target number sum;

[0104] Step S204 , according to the above-mentioned preparation quantity and the above-mentioned target quantity, energy is distributed to the above-mentioned charging stack in the order of the above-mentioned charging mode to charge each of the above-mentioned electric vehicles in turn.

[0105] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0106] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0107] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0108] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0109] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0110] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0111] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0112] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0113] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0114] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0115] 1) The energy distribution method of the charging stack of the present application, the charging stack is applied to multiple electric vehicles, and the charging stack includes a prepared number of power modules. First, under the condition of meeting the preset conditions, the current state information and charging information of the electric vehicle are obtained; then, at least according to the current state information and charging information, the charging mode of the charging stack for the electric vehicle and the target number of electric vehicles are determined. The process of charging the electric vehicle by the charging stack includes multiple charging modes connected in sequence, and the charging voltage and charging current of the electric vehicle corresponding to different charging modes are different; then, the sum of the target numbers of multiple electric vehicles is calculated to obtain the target number sum; finally, according to the prepared number and the target number sum, the energy of the charging stack is distributed in the order of the charging mode to charge each electric vehicle in turn. In this method, since the requirements for the charging voltage and charging current corresponding to each charging mode are different, the corresponding target number of power modules is used to charge the electric vehicle, so that each power module can operate in its efficient working range. Then, according to the order of the above-mentioned charging modes and the principle of first-come-first-served of electric vehicles, the charging stack is controlled to charge multiple electric vehicles. By centrally managing and flexibly allocating the number of power modules of the charging stack, when multiple vehicles are charging at the same time, they can be reasonably allocated according to the order of access time and the power capacity of the charging stack, that is, the reserve quantity, thereby optimizing the overall charging efficiency and the flexibility of the charging process, and solving the technical problem of lack of flexibility in the allocation of power modules of the charging stack in the prior art.

[0116] 2) The energy distribution device of the charging stack of the present application, the charging stack is applied to multiple electric vehicles, the charging stack includes a prepared number of power modules, the acquisition unit obtains the current state information and charging information of the electric vehicle under the condition of meeting the preset conditions; the determination unit determines the charging mode of the charging stack for the electric vehicle and the target number of electric vehicles based on at least the current state information and the charging information, the process of the charging stack charging the electric vehicle includes multiple charging modes connected in sequence, and the charging voltage and charging current of the electric vehicle corresponding to different charging modes are different; the calculation unit calculates the sum of the target numbers of multiple electric vehicles to obtain the target number sum; the distribution unit distributes energy to the charging stack according to the prepared number and the target number sum in the order of the charging mode to charge each electric vehicle in turn. In the device, since the requirements for the charging voltage and charging current corresponding to each charging mode are different, the corresponding target number of power modules is used to charge the electric vehicle, so that each power module can operate in its efficient working range. Then, according to the above-mentioned order of the charging modes and the principle of first-come-first-served of electric vehicles, the charging stack is controlled to charge multiple electric vehicles. By centrally managing and flexibly allocating the number of power modules of the charging stack, when multiple vehicles are charging at the same time, they can be reasonably allocated according to the order of access time and the power capacity of the charging stack, that is, the reserve quantity, thereby optimizing the overall charging efficiency and the flexibility of the charging process, and solving the technical problem of lack of flexibility in the allocation of power modules of the charging stack in the prior art.

[0117] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for distributing energy in a charging stack, characterized in that: The charging stack is applied to a plurality of electric vehicles, the charging stack comprises a prepared number of power modules, and the method comprises: Under the condition that preset conditions are met, the current state information and charging information of the electric vehicle are obtained, the preset conditions including at least one of the following: the power modules of the charging stack are allocated for a predetermined time, at least one of the electric vehicles is connected to the charging stack, and at least one of the electric vehicles is charged, the current state information is used to characterize the charging state of the electric vehicle corresponding to the current moment, and the charging information is used to characterize the charging state corresponding to the moment when the electric vehicle is charged; Determine the charging mode of the electric vehicle by the charging stack and the target number of the electric vehicles at least according to the current state information and the charging information, wherein the process of the electric vehicle being charged by the charging stack includes a plurality of the charging modes connected in sequence, and different charging modes correspond to different charging voltages and charging currents of the electric vehicles, and the target number is the number of the power modules that provide the charging current and the charging voltage to one electric vehicle, and the charging modes and the target number correspond one to one; Calculating the sum of the target numbers of the plurality of electric vehicles to obtain a target sum; According to the sum of the reserve quantity and the target quantity, energy is distributed to the charging stack in the order of the charging mode to charge each of the electric vehicles in sequence.

2. The method according to claim 1, characterized in that When the preset conditions are met, the current state information and charging information of the electric vehicle are obtained, including: Acquire a first charging voltage of the electric vehicle at the current moment and a first charging current of the electric vehicle at the current moment to obtain the current state information; A second charging voltage corresponding to the electric vehicle at the time when charging is completed and a second charging current corresponding to the electric vehicle at the time when charging is completed are acquired to obtain the charging information.

3. The method according to claim 2, characterized in that The charging mode includes a first charging mode, a second charging mode, a third charging mode, a fourth charging mode and a fifth charging mode connected in sequence, and determining the charging mode of the charging stack for the electric vehicle at least according to the current state information and the charging information, including: Obtaining the maximum voltage of the electric vehicle under constant current charging to obtain a maximum voltage value, and obtaining the maximum current of the electric vehicle under constant voltage charging to obtain a maximum current value; When the electric vehicle is in the constant current charging and the first charging voltage is greater than 0 and less than or equal to half of the maximum voltage value, determining that the charging mode of the electric vehicle by the charging stack is the first charging mode; When the electric vehicle is in the constant current charging and the first charging voltage is greater than half of the maximum voltage value and less than or equal to the maximum voltage value, determining that the charging mode of the charging stack for the electric vehicle is the second charging mode; When the first charging voltage is greater than the maximum voltage value and less than or equal to the second charging voltage, determining that the charging mode of the charging stack for the electric vehicle is the third charging mode; When the electric vehicle is being charged at the constant voltage and the first charging current is greater than half of the maximum current value and less than or equal to the maximum current value, determining that the charging mode of the electric vehicle by the charging stack is the fourth charging mode; When the electric vehicle is being charged at the constant voltage and the first charging current is greater than 0 and less than or equal to half of the maximum current, the charging mode of the electric vehicle by the charging stack is determined to be the fifth charging mode.

4. The method according to claim 1, characterized in that Determining a target number of the electric vehicles at least according to the current state information and the charging information includes: Acquire a first quantity and a second quantity, wherein the first quantity is the quantity of power modules providing the charging voltage to the electric vehicle, and the second quantity is the quantity of power modules providing the charging current to the electric vehicle; The product of the first quantity and the second quantity is calculated to obtain the target quantity.

5. The method according to claim 4, characterized in that Get the first quantity and the second quantity, including: According to the formula Calculate the first number N of the jth charging mode js , where V jmax is the maximum value of the charging voltage of the electric vehicle in the jth charging mode, V0 is the output voltage of one of the power modules, j=1, 2, 3, 4, 5, Used to represent rounding upwards; According to the formula Calculate the second number N of the jth charging mode jp , where I jmax is the maximum value of the charging current of the electric vehicle in the jth charging mode, and I0 is the output current of one of the power modules.

6. The method according to claim 1, characterized in that According to the sum of the prepared quantity and the target quantity, the charging stack is allocated energy in the order of the charging mode to charge each of the electric vehicles in sequence, including: determining whether the reserve quantity is greater than or equal to the sum of the target quantities, and if the reserve quantity is greater than or equal to the sum of the target quantities, controlling the charging stack to charge all the electric vehicles in sequence according to the order of the charging modes; When the reserve number is less than the sum of the target numbers, the charging stack is controlled to charge the first n electric vehicles in sequence according to the order of the charging mode, wherein the sum of the target numbers of the first n electric vehicles is less than or equal to the reserve number, and n is a positive integer greater than 0.

7. The method according to claim 6, characterized in that When the reserve number is less than the target number, after controlling the charging stack to charge the first n electric vehicles in sequence according to the order of the charging modes, the method further includes: Calculating the difference between the sum of the target number of the first n electric vehicles and the reserve number to obtain a reserve difference; Determine whether the preparation difference is greater than or equal to the first number of the n+1th electric vehicle, and if the preparation difference is greater than or equal to the first number of the n+1th electric vehicle, control the third number of power modules in the charging stack to charge the n+1th electric vehicle, wherein the first number is the number of power modules that provide the charging voltage to the electric vehicle, the third number is less than or equal to the preparation difference, the third number is the product of a predetermined number and a fourth number, the predetermined number is less than the first number, and the fourth number is the number of power modules that provide the charging current to the electric vehicle; When the preliminary difference is smaller than the first number of the n+1th electric vehicles, the charging stack is controlled not to charge the n+1th electric vehicle.

8. An energy distribution device for a charging stack, characterized in that: The charging stack is applied to a plurality of electric vehicles, the charging stack comprises a prepared number of power modules, and the device comprises: an acquisition unit, configured to acquire current state information and charging information of the electric vehicle when preset conditions are met, wherein the preset conditions include at least one of the following: the power modules of the charging stack are allocated for a predetermined time, at least one of the electric vehicles is connected to the charging stack, and at least one of the electric vehicles is charged, the current state information is used to characterize the charging state of the electric vehicle corresponding to the current moment, and the charging information is used to characterize the charging state corresponding to the moment when the electric vehicle is charged; a determination unit, configured to determine a charging mode of the electric vehicle by the charging stack and a target number of the electric vehicles according to at least the current state information and the charging information, wherein the process of the electric vehicle being charged by the charging stack includes a plurality of charging modes connected in sequence, different charging modes correspond to different charging voltages and charging currents of the electric vehicle, the target number is the number of the power modules that provide charging current and charging voltage to one electric vehicle, and the charging modes and the target number correspond one to one; A calculation unit, used for calculating the sum of the target numbers of the plurality of electric vehicles to obtain the target sum; A distribution unit is used to distribute energy to the charging stack according to the prepared quantity and the target quantity in the order of the charging mode so as to charge each of the electric vehicles in turn.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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