Charging pile and power switching circuit, power switching control method and control device thereof

Abstract

The invention relates to a charging pile, a power switching circuit thereof, a power switching control method and a control device. The charging pile power switching circuit comprises at least two power matrixes and at least two first contactors, each power matrix comprises at least two power modules, in the at least two power matrixes, one power module in a target power matrix is connected with one power module in a residual power matrix through the first contactor, and the other power module in the residual power matrix is connected with the other power matrix through the second contactor. Each power module in the target power matrix is different from the power module connected with the same power matrix in the residual power matrix. Compared with traditional full matrix connection, the charging pile power switching circuit is divided into at least two power matrixes, the power matrixes are connected through the first contactors, power sharing of different power matrixes is achieved, the number of the contactors can be reduced, and cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of charging piles, and particularly to a charging pile, a power switching circuit thereof, a power switching control method, and a control device. Background Art

[0002] With the increase in the power demand for charging electric vehicles, it is necessary for charging piles to provide high power that meets the needs of electric vehicles in a short time. Currently, there are full-ring or full-matrix solutions to achieve flexible scheduling of each power module in the charging pile, but the hardware cost required by the full-ring or full-matrix solutions is high. Summary of the Invention

[0003] Based on this, it is necessary to provide a charging pile with low cost, a power switching circuit thereof, a power switching control method, and a control device.

[0004] In a first aspect, the present application provides a power switching circuit for a charging pile, including at least two power matrices and at least two first contactors;

[0005] Each of the power matrices includes at least two power modules, and each of the power modules is respectively connected to a charging gun of the charging pile, and the power module is used to charge a device to be charged through the charging gun;

[0006] Among at least two power matrices, one power module in the target power matrix is connected to one power module in the remaining power matrices through the first contactor; the power modules in the target power matrix are different from the power modules in the same power matrix in the remaining power matrices that are connected;

[0007] The first contactor is used to selectively conduct the connection path between the corresponding two power modules.

[0008] In one embodiment, when the first target contactor connected to the target charging gun is in the conducting state, the two power matrices connected through the first target contactor charge the device to be charged; the target charging gun is the charging gun that establishes a connection with the device to be charged;

[0009] When each of the first contactors is in the disconnected state, the power matrix connected through the target charging gun charges the device to be charged.

[0010] In one embodiment, the power matrix further includes at least one second contactor;

[0011] For the same power matrix, any two of the power modules are connected through the second contactor, and the second contactor is used to selectively conduct the connection path between the corresponding two connected power modules.

[0012] In one embodiment, when each of the first contactors is in an off state and at least one second contactor connected to the target charging gun is in an on state, at least two power modules in the same power matrix connected to the target charging gun are used to charge the device to be charged; the target charging gun is the charging gun connected to the device to be charged.

[0013] When at least one first contactor is in an on state and a second target contactor is in an on state, at least one power module connected to the second target contactor in the power matrix connected to the at least one first contactor is used to charge the device to be charged; the second target contactor is connected to the at least one first contactor.

[0014] In a second aspect, the present application further provides a method for controlling power switching of a charging pile, which is applied to the power switching circuit of the charging pile provided in any of the above embodiments. The method includes:

[0015] Obtain the required power of the target charging gun; the target charging gun is the charging gun connected to the device to be charged in the charging pile.

[0016] According to the required power, control the on state of the first contactor in the power switching circuit of the charging pile, so as to charge the device to be charged through at least one power matrix in the switching circuit of the charging pile.

[0017] In one embodiment, the step of controlling the on state of the first contactor in the power switching circuit of the charging pile according to the required power, so as to charge the device to be charged through at least one power matrix in the switching circuit of the charging pile, includes:

[0018] When the direct-connected power matrix corresponding to the target charging gun does not meet the required power, determine the remaining power according to the required power and the available output power of the direct-connected power matrix of the target charging gun.

[0019] Determine a first target contactor according to the remaining power; the first target contactor is connected to the target charging gun.

[0020] Control the first target contactor to be in an on state, so as to charge the device to be charged through two power matrices connected to the first target contactor.

[0021] In one embodiment, the power matrix further includes at least one second contactor; wherein, the step of controlling the on state of the first contactor in the power switching circuit of the charging pile according to the required power, so as to charge the device to be charged through at least one power matrix in the switching circuit of the charging pile, includes:

[0022] In the case where the direct connection power matrix corresponding to the target charging gun does not meet the required power, determine the remaining power according to the required power and the available output power of the direct connection power module of the target charging gun;

[0023] Determine a target power module according to the remaining power, the operating conditions of the remaining power module, and the available output power of the remaining power module; the target power module does not belong to the direct connection power matrix;

[0024] Determine a first target contactor and a second target contactor according to the connection path between the target power module and the target charging gun; the first target contactor and the second target contactor are connected to the target power module;

[0025] Control the first target contactor and the second target contactor to be in the conducting state respectively, so as to charge the device to be charged through the target power module and the direct connection power module.

[0026] In one embodiment, the operating conditions of the remaining power module include the working state and the usage duration;

[0027] The determining the target power module according to the remaining power, the operating conditions of the remaining power module, and the output power of the remaining power module includes:

[0028] Determine the power modules with the working state being the idle state in the remaining power modules as the standby power modules;

[0029] Sort each of the standby power modules according to the usage duration and the output power to obtain a standby sequence;

[0030] Traverse the standby sequence according to the remaining power to determine the target power module.

[0031] In a third aspect, the present application further provides a charging pile power switching control device for implementing the charging pile power switching control method provided in any of the above embodiments. The charging pile power switching control device includes:

[0032] A demand acquisition module for acquiring the required power of a target charging gun; the target charging gun is a charging gun in the charging pile that is connected to the device to be charged;

[0033] A control module for controlling the conducting state of a first contactor in the charging pile switching circuit according to the required power, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit.

[0034] In a fourth aspect, the present application further provides a charging pile, including the charging pile power switching circuit and the charging gun provided in any of the above embodiments.

[0035] In the above charging pile, its power switching circuit, power switching control method and control device, the power switching circuit of the charging pile includes at least two power matrices and at least two first contactors. Each power matrix includes at least two power modules. Among the at least two power matrices, one power module in the target power matrix is connected to one power module in the remaining power matrices through a first contactor. The power modules in the target power matrix are different from the power modules in the same power matrix in the remaining power matrices that are connected. Compared with the traditional full matrix connection, in this application, the power switching circuit of the charging pile is divided into at least two power matrices, and each power matrix is connected through a first contactor to achieve power sharing among different power matrices, which can reduce the number of contactors and lower the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0037] Figure 1 FIG. 10 is a schematic structural diagram of a power switching circuit of a charging pile provided in an embodiment;

[0038] Figure 2 FIG. 14 is a second schematic structural diagram of a power switching circuit of a charging pile provided in an embodiment;

[0039] Figure 3 FIG. 18 is a third schematic structural diagram of a power switching circuit of a charging pile provided in an embodiment;

[0040] Figure 4 FIG. 22 is a schematic flow chart of a power switching control method of a charging pile provided in an embodiment;

[0041] Figure 5 FIG. 26 is a flow chart of controlling the conduction state of the first contactor in the power switching circuit of the charging pile according to the required power to charge the device to be charged through at least one power matrix in the power switching circuit of the charging pile provided in an embodiment;

[0042] Figure 6 FIG. 30 is a flow chart of controlling the conduction state of the first contactor in the power switching circuit of the charging pile according to the required power to charge the device to be charged through at least one power matrix in the power switching circuit of the charging pile provided in another embodiment;

[0043] Figure 7 FIG. 34 is a fourth schematic structural diagram of a power switching circuit of a charging pile provided in an embodiment;

[0044] Figure 8 The fifth structural schematic diagram of the charging pile power switching circuit provided for an embodiment;

[0045] Figure 9 The sixth structural schematic diagram of the charging pile power switching circuit provided for an embodiment;

[0046] Figure 10 The structural block diagram of the charging pile power switching control device provided for an embodiment;

[0047] Figure 11 The internal block diagram of the controller provided for an embodiment. Detailed implementation manners

[0048] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0050] It can be understood that the terms "first", "second", etc. used in this application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, the first contactor can be called the second contactor, and similarly, the second contactor can be called the first contactor. Both the first contactor and the second contactor are contactors, but they are not the same contactor.

[0051] It can be understood that "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if there is an electrical signal or data transfer between the connected circuits, modules, units, etc.

[0052] It can be understood that "at least one" means one or more, and "a plurality" means two or more. "At least part of an element" means part or all of the element.

[0053] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having", etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0054] In one embodiment, as Figure 1 shown, the present application provides a charging pile power switching circuit, including at least two power matrices 100 and at least two first contactors 200. Each power matrix 100 includes at least two power modules 110, and each power module 110 is respectively connected to a charging gun 300 of the charging pile. The power module 110 is used to charge the device to be charged through the charging gun 300. It should be noted that the "matrix" mentioned in the embodiments of the present application does not refer to the arrangement manner of the power modules 110 in the physical sense, but refers to the connection manner between the power modules 110 within the same power matrix 100. Each power module 110 respectively includes at least one power module, and the number of power modules in each power module can be the same or different.

[0055] Among the at least two power matrices 100, one power module 110 in the target power matrix is connected to one power module 110 in the remaining power matrices through the first contactor 200, and the power modules 110 in the target power matrix connected to the same power matrix in the remaining power matrices are different. The first contactor 200 is used to selectively conduct the connection path between the corresponding two power modules 110. The number of power modules 110 in each power matrix 100 is the same, and the number of the first contactors 200 is the same as the number of power modules 110 in one power matrix.

[0056] Taking the number of power matrices 100 as two as an example, as Figure 1 shown, the power modules in power matrix A are respectively connected to the power modules in power matrix B in one-to-one correspondence through a first contactor 200.

[0057] Taking the number of power matrices as three as an example, as Figure 2 shown, the power modules in power matrix A are respectively connected to the power modules in power matrix B in one-to-one correspondence through a first contactor 200, and the power modules in power matrix B are respectively connected to the power modules in power matrix C in one-to-one correspondence through a first contactor 200.

[0058] Taking the number of power matrices as three as an example, as Figure 3As shown, the power modules in the power matrix A are respectively connected in one-to-one correspondence with the power modules in the power matrix B through a first contactor 200. The power modules in the power matrix A are also respectively connected in one-to-one correspondence with the power modules in the power matrix C through a first contactor 200. The power modules in the power matrix B are respectively connected in one-to-one correspondence with the power modules in the power matrix C through a first contactor 200.

[0059] In the embodiment of the present application, the charging pile power switching circuit includes at least two power matrices 100 and at least two first contactors 200. Each power matrix 100 includes at least two power modules 110. Among the at least two power matrices 100, one power module 110 in the target power matrix is connected to one power module 110 in the remaining power matrices through the first contactor 200. The power modules 110 in the target power matrix are different from the power modules 110 in the same power matrix in the remaining power matrices to which they are connected. Compared with the traditional full matrix connection, the present application divides the charging pile power switching circuit into at least two power matrices 100 and connects the power matrices 100 through the first contactors 200 to achieve power sharing among different power matrices 100, which can reduce the number of contactors and lower the cost.

[0060] In one embodiment, when the first target contactor connected to the target charging gun is in the conducting state, the two power matrices connected through the first target contactor charge the device to be charged. The target charging gun is the charging gun that establishes a connection with the device to be charged. When all the first contactors are in the open state, the power matrix connected through the target charging gun charges the device to be charged.

[0061] It can be understood that when the direct-connected power matrix directly connected to the target charging gun cannot meet the power requirement of the device to be charged, other power matrices are needed to assist in charging the device to be charged. The direct-connected power matrix and another power matrix can be connected through the first target contactor, and the two power matrices jointly charge the charging device. When the direct-connected power matrix directly connected to the target charging gun can already meet the power requirement of the device to be charged, all the first contactors can be disconnected, and only the direct-connected power matrix charges the device to be charged.

[0062] In one embodiment, please continue to refer to Figure 1 , the power matrix further includes at least one second contactor 120. For the same power matrix 100, any two power modules 110 are connected through the second contactor 120, and the second contactor 120 is used to selectively conduct the connection path between the two correspondingly connected power modules.

[0063] When each first contactor is in the off state and at least one second contactor connected to the target charging gun is in the on state, the target charging gun being the charging gun connected to the device to be charged, charge the device to be charged through at least two power modules in the same power matrix connected to the target charging gun. It can be understood that when the direct-connected power module directly connected to the target charging gun can already meet the power demand of the device to be charged, the first contactors and the second contactors can be disconnected, and only the direct-connected power module charges the device to be charged. When the direct-connected power module directly connected to the target charging gun cannot meet the power demand of the device to be charged, but the direct-connected power matrix can meet the power demand of the device to be charged, an appropriate power module can be determined from the direct-connected power matrix, and the second contactor between the power module and the direct-connected power module is turned on, and the power module and the direct-connected power module jointly charge the device to be charged.

[0064] When at least one first contactor is in the on state and the second target contactor is in the on state, charge the device to be charged through at least one power module connected to the second target contactor in the power matrix connected to at least one first contactor; the second target contactor is connected to at least one first contactor. It can be understood that when the direct-connected power matrix directly connected to the target charging gun cannot meet the power demand of the device to be charged, other power matrices are needed to assist in charging the device to be charged, and the first contactor between the direct-connected power matrix and the appropriate power matrix can be turned on, and the device to be charged is charged jointly by at least two power matrices. In addition, there may also be a situation where a power module other than the direct-connected power module in the direct-connected power matrix needs to participate in power supply, or a situation where at least two power modules in the appropriate power matrix need to participate in power supply, and the corresponding second target contactor also needs to be turned on.

[0065] In one embodiment, as Figure 4 shown, the present application also provides a charging pile power switching control method for the charging pile power switching circuit provided in any of the above embodiments, including step 402-step 404.

[0066] Step 402, obtain the required power of the target charging gun, the target charging gun being the charging gun connected to the device to be charged in the charging pile.

[0067] The required power of the target charging gun actually refers to the required power of the device to be charged connected to the target charging gun.

[0068] Step 404, according to the required power, control the on-off state of the first contactor in the charging pile switching circuit, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit.

[0069] It is possible to determine whether the direct connection power matrix directly connected to the target charging gun in the charging pile switching circuit meets the required power according to the required power. If the direct connection power matrix can meet the required power, the first contactor connected to the target charging gun can be controlled to be in an off state, and the target charging gun is powered only through the direct connection power matrix; if the direct connection power matrix cannot meet the required power, a suitable power matrix can be selected from other power matrices, and at least one first contactor connecting the suitable power matrix and the direct connection power matrix is controlled to be in a conducting state, and the suitable power matrix and the direct connection power matrix are used together to charge the device to be charged.

[0070] In the embodiment of the present application, by obtaining the required power of the target charging gun, according to the required power, controlling the conducting state of the first contactor in the charging pile switching circuit, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit, flexible scheduling of the output power of the entire charging pile can be realized, and power sharing between two power matrices can be realized by setting the first contactor. Compared with the traditional full matrix, the number of contactors in the charging pile switching circuit provided by the present application is less and the cost is low.

[0071] In one embodiment, as Figure 5 shown, according to the required power, controlling the conducting state of the first contactor in the charging pile switching circuit, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit, includes steps 502-506.

[0072] Step 502, in the case that the direct connection power matrix corresponding to the target charging gun does not meet the required power, determine the remaining power according to the required power and the available output power of the direct connection power matrix of the target charging gun.

[0073] The case that the direct connection power matrix corresponding to the target charging gun does not meet the required power means that the sum of the output powers of the power modules that the direct connection power matrix can call is less than the required power. The available output power of the direct connection power matrix is the sum of the output powers of the power modules that the direct connection power matrix can call, and the remaining power is the difference between the required power and the sum of the available output powers of the direct connection power matrix.

[0074] Step 504, determine the first target contactor according to the remaining power, and the first target contactor is connected to the target charging gun.

[0075] A power matrix with available output power meeting the remaining power can be determined from other power matrices, and a first contactor between the power matrix and the direct connection power matrix is determined as the first target contactor. The first target contactor is generally a first contactor connected to the power module participating in the power supply of the device to be charged in the power matrix.

[0076] Step 506: Control the first target contactor to be in the conducting state, so as to charge the device to be charged through the two power matrices connected by the first target contactor.

[0077] The first target contactor can be controlled to be in the conducting state. In this way, the two power matrices can jointly charge the device to be charged, realizing power sharing of the two power matrices.

[0078] In one embodiment, as Figure 6 shown, according to the required power, control the conducting state of the first contactor in the charging pile switching circuit, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit, including Step 602 - Step 608.

[0079] Step 602: When the direct-connected power matrix corresponding to the target charging gun does not meet the required power, determine the remaining power according to the required power and the available output power of the direct-connected power module of the target charging gun.

[0080] Step 604: Determine the target power module according to the remaining power, the operating conditions of the remaining power modules, and the available output power of the remaining power modules. The target power module does not belong to the direct-connected power matrix.

[0081] The target power module is the power module in other power matrices that participates in the power supply of the device to be charged. The number of target power modules may be 1, or may be 2, 3, or more. The operating conditions of the remaining power modules include the working state and the usage duration. The working state includes the idle state and the non-idle state. The non-idle state includes being in power supply, failure, maintenance, etc.

[0082] Specifically, the power modules with the working state of idle state in the remaining power modules can be first determined as standby power modules, and sorting processing is performed on each standby power module according to the usage duration and the output power to obtain a standby sequence. The preliminary sorting can be performed in ascending order of the output power. For two standby power modules with the same output power, the standby power module with a shorter usage duration is ranked more forward in the standby sequence. Further, traverse the standby sequence according to the remaining power to determine the target power module. Traverse the standby sequence, and take the power module with the output power approximately equal to the remaining power as the candidate power module, or take multiple power modules with the sum of the output powers approximately equal to the remaining power as the candidate power modules. The candidate power module ranked more forward in the standby sequence can be used as the target power module of the device to be charged.

[0083] In the case where there may be two or more devices to be charged simultaneously, first, the candidate power module with a higher position in the standby sequence is used as the current target power module for the current device to be charged. Then, the target power module for the next device to be charged is determined. If there is no power module that can meet the power requirement for the next device to be charged, the candidate power module after the current target power module is used as the new current target power module, and the target power module that can meet the power requirement for the next device to be charged is determined again until all devices to be charged meet the power requirement.

[0084] Step 606: Determine the first target contactor and the second target contactor according to the connection path between the target power module and the target charging gun. The first target contactor and the second target contactor are connected to the target power module.

[0085] There may be multiple connection paths between the target power module and the target charging gun. The first contactor on the shortest connection path can be used as the first target contactor, and the second contactor on the shortest connection path can be used as the second target contactor.

[0086] Step 608: Control the first target contactor and the second target contactor to be in the conducting state respectively, so as to charge the device to be charged through the target power module and the directly connected power module.

[0087] The first target contactor and the second target contactor can be controlled to be in the conducting state respectively, so as to charge the device to be charged jointly through the target power module and the directly connected power module.

[0088] For better understanding, a more specific embodiment is listed below to introduce the charging pile power switching control method of the present application. As Figure 7 shown, the charging pile power switching circuit includes power matrix A and power matrix B. Each power matrix includes 5 power modules respectively. The numbers of the power modules in power matrix A are 1 - 5, and the numbers of the power modules in power matrix B are 6 - 10. The numbers of power modules included in each power module are not exactly the same, so the output powers of each power module are not exactly the same. Assume that the target charging gun is gun No. 1, and gun No. 1 requires 5 power modules. The No. 1 power module directly connected to gun No. 1 includes 2 power modules. Therefore, gun No. 1 still needs 3 power modules.

[0089] First, consider the power matrix A and the power modules directly connected to the No. 1 power module in the power matrix B. Assume that the No. 2 - 6 modules are all in the idle state. Sort the No. 2 - 6 power modules according to the usage duration and output power, and preferentially select the power modules with short usage duration and low output power. The sorting result of the No. 2 - 6 power modules is 2, 4, 6, 3, 5. Among them, the No. 2 power module and the No. 4 power module each include only one power module, and the No. 4 power module includes two power modules. Therefore, the No. 2 power module and the No. 4 power module are used as the target power modules, and the second contactors between the No. 2 power module and the No. 1 power module, and between the No. 4 power module and the No. 1 power module are controlled to conduct, as Figure 8 shown. Assume that the No. 2 power module is in the idle state, but the No. 3 - 6 power modules are all in the non - idle state. Then sort the power modules in the power matrix B that are in the idle state, and determine that the appropriate power modules are the No. 2 power module and the No. 8 power module. Control the first contactor directly connected to the No. 2 power module and the corresponding second contactor to conduct, as Figure 9 shown.

[0090] If the number of target charging guns is multiple, first traverse the charging guns with high priority, retrieve all possible switching paths that can meet the requirements of this charging gun, first meet the requirements of the charging gun with high priority, then traverse the next charging gun with the next - highest priority, and retrieve all possible switching paths that can meet the requirements of the charging gun with the next - highest priority, and so on, until all charging guns are traversed. Check whether the results of traversing each charging gun all meet the requirements. If not, return to the previous charging gun to traverse the next switching path and then make a judgment. Repeat this process until all charging guns meet the requirements.

[0091] Based on the same inventive concept, the embodiment of the present application also provides a charging pile power switching control device for implementing the charging pile power switching control method involved above. The implementation solutions provided by this device to solve problems are similar to the implementation solutions recorded in the above - mentioned method. Therefore, the specific limitations in one or more embodiments of the following charging pile power switching control device can refer to the limitations on the charging pile power switching control method in the above text, and will not be repeated here.

[0092] In an exemplary embodiment, as Figure 10 shown, a charging pile power switching control device is provided, including: a demand acquisition module 1002 and a control module 1004, where:

[0093] The demand acquisition module 1002 is used to acquire the required power of the target charging gun; the target charging gun is the charging gun connected to the device to be charged in the charging pile;

[0094] The control module 1004 is configured to control the conduction state of the first contactor in the charging pile switching circuit according to the required power, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit.

[0095] In one embodiment, the control module is further configured to, when the direct-connected power matrix corresponding to the target charging gun does not meet the required power, determine the remaining power according to the required power and the available output power of the direct-connected power matrix of the target charging gun; determine the first target contactor according to the remaining power; the first target contactor is connected to the target charging gun; control the first target contactor to be in the conduction state, so as to charge the device to be charged through the two power matrices connected by the first target contactor.

[0096] In one embodiment, the control module is further configured to, when the direct-connected power matrix corresponding to the target charging gun does not meet the required power, determine the remaining power according to the required power and the available output power of the direct-connected power module of the target charging gun; determine the target power module according to the remaining power, the operating condition of the remaining power module, and the available output power of the remaining power module; the target power module does not belong to the direct-connected power matrix; determine the first target contactor and the second target contactor according to the connection path between the target power module and the target charging gun; the first target contactor and the second target contactor are connected to the target power module; respectively control the first target contactor and the second target contactor to be in the conduction state, so as to charge the device to be charged through the target power module and the direct-connected power module.

[0097] In one embodiment, the control module is further configured to determine the power modules with the working state of the idle state in the remaining power modules as the standby power modules; perform sorting processing on each standby power module according to the usage duration and output power to obtain a standby sequence; traverse the standby sequence according to the remaining power to determine the target power module.

[0098] Each module in the above charging pile power switching control device can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in the form of hardware or be independent of it, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above respective modules.

[0099] In one embodiment, the present application further provides a charging pile including the charging pile power switching circuit and the charging gun provided in any of the above embodiments.

[0100] In an exemplary embodiment, a controller is provided. The controller can be a server, and its internal structure diagram can be as Figure 11As shown. The controller includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O), and a communication interface. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the controller is used to provide computing and control capabilities. The memory of the controller includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the controller is used to store the operating condition data of each power module. The input / output interface of the controller is used to exchange information between the processor and external devices. The communication interface of the controller is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it implements a method for controlling the power switching of a charging pile.

[0101] Those skilled in the art can understand that Figure 11 the structure shown in is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the controller to which the solution of this application is applied. The specific controller may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0102] In an exemplary embodiment, a controller is provided, including a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, it implements the method for controlling the power switching of a charging pile provided in any of the above embodiments.

[0103] In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by the processor, it implements the method for controlling the power switching of a charging pile provided in any of the above embodiments.

[0104] In an embodiment, a computer program product is provided, including a computer program. When the computer program is executed by the processor, it implements the method for controlling the power switching of a charging pile provided in any of the above embodiments.

[0105] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in this application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, artificial intelligence (AI) processors, etc., without limitation.

[0106] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this application.

[0107] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A power switching circuit for a charging pile, characterized in that Comprising at least two power matrices and at least two first contactors; Each of the power matrices comprises at least two power modules, each of the power modules is respectively connected to a charging gun of a charging pile, and the power module is used to charge a device to be charged through the charging gun; Among at least two power matrices, one power module in a target power matrix is connected to one power module in the remaining power matrices through the first contactor; the power modules in the target power matrix are different from the power modules in the same power matrix in the remaining power matrices that are connected; The first contactor is used to selectively conduct the connection path between the corresponding two power modules.

2. The charging pile power switching circuit according to claim 1, wherein When the first target contactor connected to the target charging gun is in the conducting state, the two power matrices connected through the first target contactor charge the device to be charged; the target charging gun is the charging gun that establishes a connection with the device to be charged; When all the first contactors are in the disconnected state, the power matrix connected through the target charging gun charges the device to be charged.

3. The charging pile power switching circuit according to claim 1, wherein, The power matrix further comprises at least one second contactor; For the same power matrix, any two of the power modules are connected through the second contactor, and the second contactor is used to selectively conduct the connection path between the corresponding two connected power modules.

4. The charging pile power switching circuit according to claim 3, wherein When all the first contactors are in the disconnected state and at least one second contactor connected to the target charging gun is in the conducting state, at least two power modules in the same power matrix connected to the target charging gun charge the device to be charged; the target charging gun is the charging gun that establishes a connection with the device to be charged; When at least one first contactor is in the conducting state and the second target contactor is in the conducting state, at least one power module connected to the second target contactor in the power matrix connected to the at least one first contactor charges the device to be charged; the second target contactor is connected to the at least one first contactor.

5. A power switching control method for a charging pile, characterized in that, Applied to the charging pile power switching circuit according to any one of claims 1-4, the method comprises: Obtaining the required power of the target charging gun; the target charging gun is the charging gun in the charging pile that is connected to the device to be charged; According to the required power, controlling the conducting state of the first contactor in the charging pile power switching circuit, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit.

6. The method according to claim 5, characterized in that, The controlling the conducting state of the first contactor in the charging pile switching circuit according to the required power, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit, comprises: When the direct-connected power matrix corresponding to the target charging gun does not meet the required power, determining the remaining power according to the required power and the available output power of the direct-connected power matrix of the target charging gun; Determine a first target contactor according to the remaining power; the first target contactor is connected to the target charging gun; Control the first target contactor to be in a conducting state, so as to charge the device to be charged through two power matrices connected by the first target contactor.

7. The method according to claim 5, characterized in that, The power matrix further includes at least one second contactor; wherein, controlling the on-off state of the first contactor in the charging pile switching circuit according to the required power, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit, includes: When the direct-connected power matrix corresponding to the target charging gun does not meet the required power, determine the remaining power according to the required power and the available output power of the direct-connected power module of the target charging gun; Determine a target power module according to the remaining power, the operating conditions of the remaining power modules and the available output power of the remaining power modules; the target power module does not belong to the direct-connected power matrix; Determine a first target contactor and a second target contactor according to the connection path between the target power module and the target charging gun; the first target contactor and the second target contactor are connected to the target power module; Control the first target contactor and the second target contactor to be in a conducting state respectively, so as to charge the device to be charged through the target power module and the direct-connected power module.

8. The method according to claim 7, characterized in that, The operating conditions of the remaining power modules include the working state and the usage duration; The determining the target power module according to the remaining power, the operating conditions of the remaining power modules and the output power of the remaining power modules includes: Determine the power modules with the working state of the idle state in the remaining power modules as the standby power modules; Sort each of the standby power modules according to the usage duration and the output power to obtain a standby sequence; Traverse the standby sequence according to the remaining power to determine the target power module.

9. A power switching control device for a charging pile, characterized in that, For implementing the method according to any one of claims 5-8, the charging pile power switching control device includes: A demand acquisition module, configured to acquire the required power of a target charging gun; the target charging gun is a charging gun in the charging pile that is connected to the device to be charged; A control module, configured to control the on-off state of the first contactor in the charging pile switching circuit according to the required power, so as to charge the device to be charged through at least one power matrix in the charging pile switching circuit.

10. A charging pile, characterized in that, Including the charging pile power switching circuit and the charging gun according to any one of claims 1-4.

Images