Power module control method, device and system

Abstract

The present application provides a power module control method, device and system, which relates to the field of electric vehicle charging technology. The power module control method includes: according to a first preset sequence, controlling M power modules to start up in sequence with corresponding startup voltages, determining a first output voltage sampling value, and obtaining a first matching result of the M power modules according to the startup voltages and the first output voltage sampling values ​​of the M power modules, according to a second preset sequence, controlling the M power modules to start up in sequence with corresponding startup voltages, determining a second output voltage sampling value, and obtaining a second matching result of the M power modules according to the startup voltages and the second output voltage sampling values ​​of the M power modules, and finally determining a callable power module from the M power modules according to the first matching result and the second matching result, and the callable power module can be used in the subsequent use to meet the power allocation requirements of the charging system, and avoid using an uncallable power module to cause a safety hazard.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging, and in particular to a power module control method, device and system. Background Art

[0002] As electric vehicle charging technology becomes more and more mature, various power distribution methods and straight-line and matrix structures built with DC contactors are becoming more and more common.

[0003] When the existing DC charging technology distributes power, there are still loopholes in the confirmation of the position and correspondence between the power distribution unit and the power module unit, which leads to the mistaken call of abnormal power modules during actual use, and thus cannot meet the current power distribution requirements of the charging system, posing a safety hazard and affecting the user's normal charging. Summary of the invention

[0004] The object of the present invention is to provide a power module control method, device and system to address the deficiencies in the above-mentioned prior art, so as to determine a callable power module among multiple power modules and provide a basis for scheduling the power module during charging.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] In a first aspect, an embodiment of the present application provides a power module control method, which is applied to a controller of a charging system, and the method includes:

[0007] According to a first preset sequence, control the M power modules to start up in sequence with corresponding start-up voltages, and determine first output voltage sampling values ​​of the M power modules;

[0008] Obtaining a first matching result of the M power modules and the M first power channels according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules;

[0009] According to a second preset sequence, controlling the M power modules to start up in sequence with corresponding start-up voltages, and determining second output voltage sampling values ​​of the M power modules;

[0010] Obtaining a second matching result of the M power modules and the M second power channels according to the startup voltages of the M power modules and the second output voltage sampling values ​​of the M power modules;

[0011] According to the first matching result and the second matching result, a callable power module is determined from the M power modules.

[0012] In an optional implementation, controlling the M power modules to be powered on in sequence with corresponding power-on voltages according to a second preset sequence, and determining the second output voltage sampling values ​​of the M power modules includes:

[0013] If the first matching result between the i-th power module and the i-th first power channel is a matching failure, then according to a second preset order, each power module from the M-th power module to the i+1-th power module among the M power modules is controlled to be powered on with a corresponding power-on voltage, and a second output voltage sampling value of each power module is determined; wherein, i is any integer in [1,M], and M is the number of power modules.

[0014] In an optional embodiment, the method further comprises:

[0015] If the first matching result between the i-th power module and the i-th first power channel is a matching failure, and the second matching result between the i+1-th power module and the i+1-th second power channel is a matching failure, then determine whether the i-th power module and the i+1-th power module are positionally swapped based on the first output voltage sampling value corresponding to the i-th power module and the second output voltage sampling value corresponding to the i+1-th power module; wherein i is any integer in [1,M], and M is the number of power modules.

[0016] In an optional embodiment, the method further comprises:

[0017] If the positions of the i-th power module and the i+1-th power module are swapped, the module identifiers of the i-th power module and the i+1-th power module are reset.

[0018] In an optional implementation, obtaining a first matching result of the M power modules and the M first power channels according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules includes:

[0019] According to the power-on voltage value of the i-th power module and the first output voltage sampling value of the i-th power module, the i-th power module and the i-th first power channel are matched to obtain a first matching result of the i-th power module and the i-th first power channel to indicate whether the i-th power module and the i-th first power channel are successfully matched; wherein, i is any integer in [1,M], and M is the number of power modules.

[0020] In an optional implementation, controlling the M power modules to be powered on in sequence with corresponding power-on voltages according to a first preset sequence, and determining first output voltage sampling values ​​of the M power modules includes:

[0021] If the first matching result between the i-th power module and the i-th first power module is a successful match, then according to the first preset order, the i+1-th power module is controlled in sequence to start up with the corresponding start-up voltage, and the i+1-th power module and the +1-th first output voltage sampling value are determined.

[0022] In an optional implementation, controlling the M power modules to be powered on in sequence with corresponding power-on voltages according to a second preset sequence, and determining the second output voltage sampling values ​​of the M power modules includes:

[0023] If the first matching results of the M power modules and the M first power channels are all matched successfully, then according to the second preset order, the M power modules are controlled to be turned on in sequence with the corresponding power-on voltages, and the second output voltage sampling values ​​of the M power modules are determined.

[0024] In an optional implementation, controlling the M power modules to start up in sequence with corresponding startup voltages according to the first preset sequence includes:

[0025] According to the first preset sequence, the M power modules are controlled to be powered on in sequence with a plurality of increasing power-on voltages.

[0026] In an optional implementation, controlling the M power modules to start up in sequence with corresponding startup voltages according to the first preset sequence includes:

[0027] According to the first preset sequence, the startup control logic corresponding to the M first power channels is adopted to control the M power modules to be started up in sequence at the corresponding startup voltages.

[0028] In an optional implementation, controlling the M power modules to start up in sequence with corresponding startup voltages according to the second preset order includes:

[0029] According to the second preset sequence, the M power modules are controlled to be powered on in sequence at a plurality of decreasing power-on voltages.

[0030] In an optional implementation, controlling the M power modules to start up in sequence with corresponding startup voltages according to the second preset order includes:

[0031] According to the second preset sequence, the startup control logic corresponding to the M second power channels is adopted to control the M power modules to start up with the corresponding startup voltage.

[0032] In an optional implementation, determining a callable power module from the M power modules according to the first matching result and the second matching result includes:

[0033] According to the first matching result and the second matching result, a power module that has been successfully matched is determined from the M power modules as the callable power module.

[0034] In a second aspect, an embodiment of the present application further provides a power module control device, which is applied to a controller of a charging system, comprising:

[0035] A control module, configured to control the M power modules to start up in sequence with corresponding start-up voltages according to a first preset sequence, and determine first output voltage sampling values ​​of the M power modules;

[0036] A matching module, used for obtaining a first matching result of the M power modules and the M first power channels according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules;

[0037] The control module is further used to control the M power modules to start up in sequence with corresponding start-up voltages according to a second preset sequence, and determine second output voltage sampling values ​​of the M power modules;

[0038] The matching module is further used to obtain a second matching result of the M power modules and the M second power channels according to the startup voltages of the M power modules and the second output voltage sampling values ​​of the M power modules;

[0039] A determination module is used to determine a callable power module from the M power modules according to the first matching result and the second matching result.

[0040] In a third aspect, an embodiment of the present application further provides a charging system, including: a controller, N terminal controllers, and M power modules, wherein the input ends of the M power modules are used to connect to a preset power supply, and the output ends of each power module are connected to N charging interfaces, and the N charging interfaces are respectively used to connect to N charging guns; the N terminal controllers are also connected to the N charging interfaces;

[0041] The controller is communicatively connected to the N terminal controllers, and the controller is also communicatively connected to the M power modules. The controller is used to execute the steps of the power module control method described in any one of the first aspects above.

[0042] The beneficial effects of this application are:

[0043] The present application provides a power module control method, device and system, including: according to a first preset sequence, controlling M power modules to start up in sequence with corresponding power-on voltages, and determining first output voltage sampling values ​​of the M power modules, and obtaining first matching results of the M power modules and M first power channels according to the power-on voltages of the M power modules and the first output voltage sampling values ​​of the M power modules; according to a second preset sequence, controlling the M power modules to start up in sequence with corresponding power-on voltages, and determining second output voltage sampling values ​​of the M power modules, and obtaining second matching results of the M power modules and M second power channels according to the power-on voltages of the M power modules and the second output voltage sampling values ​​of the M power modules; and finally determining a callable power module from the M power modules according to the first matching result and the second matching result. The method of the present application controls M power modules to start up in sequence with corresponding start-up voltages through a first preset sequence and a second preset sequence, and determines a first matching result between the M power modules and the M first power channels and a second matching result between the M power modules and the M second power channels. Only when the first matching results of the M power modules and the second power modules are successfully matched, can the power module be determined to be a callable power module. When the power module is subsequently called, the callable power module and the power channel can be used to meet the power allocation requirements of the charging system, provide normal power supply to the user, and avoid using non-callable power modules to cause safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 A schematic diagram of a charging system provided in an embodiment of the present application;

[0046] Figure 2 A schematic diagram of a flow chart of a power module control method provided in an embodiment of the present application;

[0047] Figure 3 A schematic flow chart of another power module control method provided in an embodiment of the present application;

[0048] Figure 4 A schematic diagram of another charging system provided in this embodiment;

[0049] Figure 5 A schematic diagram of functional modules of a power channel matching device provided in an embodiment of the present application;

[0050] Figure 6 A schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0052] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0053] In addition, the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0054] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0055] In order to achieve power channel matching through power module control, multiple terminal controllers and multiple power modules can be controlled by a controller to achieve power channel matching so as to meet the power distribution requirements of the charging system. Before describing the power module control method provided in the embodiment of the present application, the embodiment of the present application may first explain the charging system. Figure 1 A schematic diagram of a charging system provided in an embodiment of the present application. Figure 1As shown, the charging system includes: a controller, N terminal controllers, M power modules, etc. Among them, the controller is connected to the N terminal controllers in communication, and the controller is connected to the M power modules in communication, so that the controller can control the M power modules and the functions in the charging system, wherein the functions of the controller in the charging system may include: setting the M power module on / off, setting the M power module output voltage and current, obtaining the status of the M power modules, realizing the power distribution of the M power modules, matching multiple power channels, performing fault detection on the charging system, communicating with the N terminal controllers, interacting with the centralized controller, and other functions.

[0056] In the charging system, M power modules can be represented as: power module 1, power module 2, power module 3, ..., power module M. The input end of the M power modules is used to connect to the preset power supply, and the output end of each power module is connected to N charging interfaces, and the N charging interfaces are respectively connected to N charging guns. Therefore, the M power modules are used to realize the vehicle battery management system (Battery Management System, The N terminal controllers can be represented as: terminal controller 1, terminal controller 2, terminal controller 3, ..., terminal controller N. The N terminal controllers are also connected to N charging interfaces. The number of terminal controllers is consistent with the number of charging interfaces and charging guns. The N terminal controllers can communicate with the vehicle BMS, realize the interaction function with the vehicle, simulate the sampling voltage function, output contactor control function, charging fault management, auxiliary source on / off, metering, electronic lock drive and detection, charging control guidance, active protection and other functions.

[0057] The charging system also includes: K parallel contactors and N DC output contactors, wherein the K parallel contactors are connected to adjacent power modules among the M power modules, for example, the parallel contactor 1 among the K parallel contactors can be connected to adjacent power modules 1 and power modules 2 among the M power modules, the parallel contactor 2 can be connected to adjacent power modules 2 and power modules 3, and so on, the parallel contactor K can be connected to M-1 power modules and M power modules, so that the K parallel contactors can realize flexible allocation of the M power modules. The N DC output contactors are respectively connected to the N charging interfaces or the N charging guns.

[0058] Before matching the power channels of the charging system, first configure the parameters in the charging system, identify the type of each power module in the M power modules, that is, the model, maximum output voltage, minimum voltage, etc. corresponding to each power module, and identify the mark corresponding to each power module in the M power modules, that is, the ID, identify the status of the controller and the terminal controller, and confirm the corresponding position relationship between each parallel contactor and the M power modules.

[0059] The following is a detailed explanation of various power module control methods through multiple embodiments in conjunction with the accompanying drawings. In order to enable the controller to perform power channel matching, a control program for corresponding operations may be pre-integrated and installed in the controller, which is implemented by running an algorithm or software. Figure 2 A schematic diagram of a power module control method provided in an embodiment of the present application. Figure 2 As shown, a controller applied to a charging system, the method includes:

[0060] S101 . According to a first preset sequence, control M power modules to start up in sequence with corresponding start-up voltages, and determine first output voltage sampling values ​​of the M power modules.

[0061] In this embodiment, the first preset order is the order in which the M power modules are connected in sequence according to the power module identifiers, for example, the order in which power module 1 is connected to power module M, or the order in which power module M is connected to power module 1. M is the number of power modules.

[0062] Optionally, according to the first preset sequence, the startup control logic corresponding to the M first power channels is used to control the M power modules to be started up in sequence with corresponding startup voltages.

[0063] For example, the i-th first power channel among the M first power channels is a first power channel composed of the first terminal controller among the N terminal controllers, the i-th power module and the charging gun corresponding to the first terminal controller, wherein the first terminal controller is any one of the N terminal controllers. The startup control logic is to control the corresponding power module to start up according to the controller, and control the corresponding parallel connector to close. For example, if the controller controls the i-th power module to start up, and controls the parallel contactor between the i-1 power module and the i power module to close, it should be noted that if the preset sequence is the sequence of connection of power module 1 to power module M, then the power module 1 among the M power modules does not need to close the parallel contactor before starting up. If the preset sequence is the sequence of connection of power module M to power module 1, then the power module M among the M power modules does not need to close the parallel contactor before starting up.

[0064] Optionally, according to the first preset sequence, the M power modules may be controlled to be turned on in sequence with a plurality of increasing start-up voltages, the start-up voltage being a corresponding start-up voltage set by the charging system according to each of the M power modules, and the start-up voltage may not be greater than the highest output voltage of each power module, nor may it be less than the lowest output voltage of each power module. The start-up voltages corresponding to the M power modules may be expressed as:

[0065] Power-on voltage = fixed voltage value + power module identification × custom voltage value

[0066] For example, the power-on voltage corresponding to the ith power module can be expressed as: V=530+i×30, where the fixed voltage value can be 530V, 560V, etc., and the custom voltage value can be expressed as 30V, 20V, etc., which are not limited here. The power-on voltage is used to power on each power module. If the ith power module among the M power modules is powered on by the controller, the corresponding power-on voltage will be output to the ith power module so that the ith power module can be powered on, thereby controlling the M power modules to be powered on with the corresponding power-on voltage in turn, and sampling the output voltage of the M power modules through the first terminal controller to obtain the first output voltage sampling value of the M power modules.

[0067] S102: Obtain a first matching result of the M power modules and the M first power channels according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules.

[0068] The first matching result is used to indicate whether the M power modules are successfully matched with the M first power channels. A preset voltage threshold is set, for example, it can be 15V. For example, the first matching result of the i-th power module among the M power modules is judged, and the startup voltage of the i-th power module and the first output voltage sampling value of the i-th power module are compared, that is, a difference is made. If the difference is within the preset voltage threshold range, it means that the i-th power module and the i-th first power channel are successfully matched, that is, the first matching result is a successful match; if the difference is not within the preset voltage threshold range, it means that the i-th power module and the i-th first power channel fail to match, that is, the first matching result is a failed match. Similarly, the startup voltage of each power module in the M power modules and the first output voltage sampling value of each power module are compared to determine the first matching result of each power module and the first power channel corresponding to each power module, thereby obtaining the first matching result of the M power modules and the M first power channels.

[0069] S103 . According to a second preset sequence, control the M power modules to start up in sequence with corresponding start-up voltages, and determine second output voltage sampling values ​​of the M power modules.

[0070] Specifically, if the first preset order is the connection order from power module 1 to power module M, the second preset order is the connection order from power module M to power module 1; if the first preset order is the connection order from power module M to power module 1, the second preset order is the connection order from power module 1 to power module M.

[0071] Optionally, according to the second preset sequence, the startup control logics corresponding to the M second power channels are used to control the M power modules to start up with the corresponding startup voltages.

[0072] For example, if the second preset order is the connection order of power module M to power module 1, the startup control logic corresponding to the M second power channels is used to start up each power module from the Mth power module to the 1st power module with a corresponding startup voltage value. The M second power channels are the second power channels corresponding to each power module. The startup control logic of each power module in the multiple power modules is similar to the above step S101. The startup control logic is to start up the corresponding power module according to the controller, and control the corresponding parallel connector to be attracted.

[0073] Optionally, according to a second preset order, M power modules are controlled to be turned on in sequence with a plurality of decreasing start-up voltages, and the output voltages of the M power modules are sampled through a second terminal controller, wherein the second terminal controller is any one of the N terminal controllers, corresponding to the second preset order, and determines the second output voltage sampling values ​​of the M power modules.

[0074] S104 . Obtain a second matching result of the M power modules and the M second power channels according to the startup voltages of the M power modules and the second output voltage sampling values ​​of the M power modules.

[0075] Specifically, the M second power channels are M second power channels formed by a second terminal controller among the N terminal controllers, M power modules, and a charging gun corresponding to the second terminal controller.

[0076] The second matching result is used to indicate whether the M power modules are successfully matched with the M second power channels. Similar to the above step S102, by setting a preset voltage threshold, it is determined whether the difference between the second output voltage sampling values ​​of the M power modules and the M power modules is within the preset voltage threshold range. If the difference is within the preset voltage threshold range, it means that the power module and the corresponding second power channel are successfully matched, that is, the second matching result is a successful match; if the difference is not within the preset voltage threshold range, it means that the power module and the corresponding second power channel fail to match, that is, the second matching result is a failed match, and the second matching result of each power module and the second power channel corresponding to each power module is determined, thereby obtaining the second matching result of the M power modules and the M second power channels.

[0077] S105 . Determine an available power module from the M power modules according to the first matching result and the second matching result.

[0078] According to the above-mentioned step S102 and step S104, the first matching result and the second matching result are respectively obtained. For example, if the first matching result of the i-th power module among the M power modules is a successful match, and the second matching result is also a successful match, then the i-th power module among the M power modules is determined to be a callable power module; if the first matching result of the i-th power module among the M power modules is a failed match or the second matching result is a failed match, then it is determined that the i-th power module among the M power modules is not a callable power module, thereby determining the callable power module among the M power modules based on whether the first matching result and the second matching result of the M power modules are both successful matches.

[0079] In summary, the present application provides a power module control method, including: according to a first preset order, controlling M power modules to be turned on in sequence with a corresponding power-on voltage, and determining the first output voltage sampling value of the M power modules, and obtaining a first matching result between the M power modules and the M first power channels according to the power-on voltage of the M power modules and the first output voltage sampling value of the M power modules; according to a second preset order, controlling the M power modules to be turned on in sequence with a corresponding power-on voltage, and determining the second output voltage sampling value of the M power modules, and obtaining a second matching result between the M power modules and the M second power channels according to the power-on voltage of the M power modules and the second output voltage sampling value of the M power modules; finally, determining a callable power module from the M power modules according to the first matching result and the second matching result. The method of the present application controls M power modules to start up in sequence with corresponding start-up voltages through a first preset sequence and a second preset sequence, and determines a first matching result between the M power modules and the M first power channels and a second matching result between the M power modules and the M second power channels. Only when the first matching results of the M power modules and the second power modules are successfully matched, can the power module be determined to be a callable power module. When the power module is subsequently called, the callable power module and the power channel can be used to meet the power allocation requirements of the charging system, provide normal power supply to the user, and avoid using non-callable power modules to cause safety hazards.

[0080] The embodiment of the present application further provides a possible implementation of a power module control method, which controls M power modules to be powered on in sequence with corresponding power-on voltages according to a second preset sequence, and determines second output voltage sampling values ​​of the M power modules, including:

[0081] If the first matching result between the i-th power module and the i-th first power channel is a matching failure, then, according to a second preset order, each power module from the M-th power module to the i+1-th power module in the M power modules is controlled to start up with a corresponding startup voltage, and a second output voltage sampling value of each power module is determined. Wherein, i is any integer in [1, M], and M is the number of power modules.

[0082] Specifically, if the first preset order is the connection order from power module 1 to power module M, the second preset order is the connection order from power module M to power module 1; if the first preset order is the connection order from power module M to power module 1, the second preset order is the connection order from power module 1 to power module M.

[0083] For example, assuming that the startup control logic corresponding to the i-th first power channel is used to control the i-th power module to start up, the connection order from power module 1 to power module M is the preset order, and the matching result from the 1st power channel to the i-1th power channel is a successful match, but when the first matching result of the i-th first power channel is a failed match, the second preset order, that is, the connection order from power module M to power module 1, is used, and the startup control logic corresponding to the M second power channels is used to start up each power module from the Mth power module to the i+1th power module among the M power modules with a corresponding startup voltage, and the output voltage of the M power modules is sampled through the second terminal controller, wherein the second terminal controller is any one of the N terminal controllers, corresponding to the second preset order, and determines the second output voltage sampling values ​​of the M power modules.

[0084] The embodiment of the present application also provides a possible implementation of a power module control method, if the first matching result between the i-th power module and the i-th first power channel is a matching failure, and the second matching result between the i+1-th power module and the i+1-th second power channel is a matching failure, then according to the first output voltage sampling value corresponding to the i-th power module and the second output voltage sampling value corresponding to the i+1-th power module, it is determined whether the i-th power module and the i+1-th power module are positionally swapped. Wherein, i is any integer in [1,M], and M is the number of power modules.

[0085] Specifically, in the second matching results of each power module, there is a situation where the second matching result of the i+1th power module is a matching failure, and the first matching result of the i-th power module is a matching failure. Then, based on the first output voltage sampling value corresponding to the i-th power module and the second output voltage sampling value corresponding to the i+1th power module, it is determined whether the i-th power module and the i+1-th power module are positionally swapped. If the first output voltage sampling value and the second output voltage sampling value meet the preset conditions, it can be determined that the i-th power module and the i+1-th power module are positionally swapped. The preset conditions may be that the first output voltage sampling value and the second output voltage sampling value are both 0, or other conditions, which are not limited here.

[0086] For example, assuming that the charging system includes a controller, 4 power modules, 2 terminal controllers, 3 sets of parallel contactors, and 2 DC output contactors, the startup voltage values ​​corresponding to the 4 power modules are set according to the types of the 4 power modules, which are: 560V, 590V, 620V, and 650V respectively. First, the controller controls the power module 1 to start up with the corresponding startup voltage value of 560V. After the power module 1 is started, the output voltage of the power module 1 is sampled by the terminal controller 1. The specific sampling position is to sample the front-end voltage of the corresponding DC output contactor, and judge whether the difference between the output voltage sampling value of the terminal controller 1 and 530V is within the preset voltage threshold, that is, the preset voltage threshold is 15V. If the difference is within 15V, it is considered that the power module 1 is successfully matched. Then the controller controls the power module 1 to shut down, and then controls the parallel contactor 1 between the power module 1 and the power module 2 to be attracted. The controller controls the power module 2 to start up with the corresponding startup voltage value of 590V. After the power module 2 is turned on, if the difference between the output voltage sampling value of the power module 2 by the terminal controller 1 and 590V is within 15V, it is considered that the power module 2 is successfully matched. If the difference is not within 15V, it is considered that the power module 2 fails to match. If the power module 2 fails to match, it starts Detection is performed through the terminal controller 2, and the power module 4 is controlled by the controller to start up with the corresponding startup voltage value of 650V. After the power module 4 is started, if the difference between the output voltage sampling value of the power module 4 by the terminal controller 2 and 650V is within 15V, it is considered that the power module 4 is successfully matched. At this time, the power module 4 is controlled by the controller to shut down, and the parallel contactor 3 between the power module 3 and the power module 4 is energized. The power module 3 is controlled by the controller to start up with the corresponding startup voltage value of 620V. After the power module 3 is started, if the difference between the output voltage sampling value of the power module 3 by the terminal controller 2 and 620V is within 15V, it is considered that the power module 3 is successfully matched. If the difference is not within 15V, it is considered that the power module 3 fails to match. At this time, according to the output voltage sampling value corresponding to the power module 2 and the output voltage sampling value corresponding to the power module 3, it is determined whether the power module 2 and the power module 3 are swapped in position, and the power channel matching of the controller is completed.

[0087] Optionally, if the positions of the i-th power module and the i+1-th power module are swapped, the module identifiers of the i-th power module and the i+1-th power module are reset.

[0088] That is, through the first output voltage sampling value corresponding to the i-th power module and the second output voltage sampling value corresponding to the i+1-th power module, it is determined that the i-th power module and the i+1-th power module are swapped in position, and then a software repair method is used to reset the module identifiers of the i-th power module and the i+1-th power module, so that the module identifier of the i-th power module becomes i+1, and the module identifier of the i+1-th power module becomes i.

[0089] In the method provided in the present application, if the first matching result of the i-th power module and the i-th first power channel is a matching failure, and the second matching result of the i+1-th power module and the i+1-th second power channel is a matching failure, then based on the first output voltage sampling value corresponding to the i-th power module and the second output voltage sampling value corresponding to the i+1-th power module, it is determined whether the i-th power module and the i+1-th power module are positionally swapped. When it is determined that the i-th power module and the i+1-th power module, i.e., adjacent modules, are positionally swapped, the adjacent power modules can be identified and reset, thereby realizing the call of the reset power module and using it for charging.

[0090] The embodiment of the present application further provides a possible implementation of a method for controlling a power module, wherein a first matching result of the M power modules and the M first power channels is obtained according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules, including:

[0091] According to the power-on voltage value of the i-th power module and the first output voltage sampling value of the i-th power module, the i-th power module and the i-th first power channel are matched to obtain a first matching result of the i-th power module and the i-th first power channel to indicate whether the i-th power module and the i-th first power channel are successfully matched; wherein i is any integer in [1,M], and M is the number of power modules.

[0092] Among them, the first matching result is used to indicate whether the i-th power module and the i-th first power channel are matched successfully. A preset voltage threshold is set, for example, it can be 15V. If the startup voltage value of the i-th power module and the first output voltage sampling value of the i-th power module are subtracted, if the difference is within the preset voltage threshold range, it means that the i-th power module and the i-th first power channel are matched successfully, that is, the first matching result is a successful match, and the i-th power module is controlled to shut down through the controller.

[0093] If the power-on voltage value of the i-th power module and the first output voltage sampling value of the i-th power module are subtracted, if the difference is not within the preset voltage threshold range, it means that the i-th power module and the i-th first power channel fail to match, that is, the first matching result is a matching failure, wherein the difference between the power-on voltage value of the i-th power module and the first output voltage sampling value is not within the preset voltage threshold range, it is possible that the i-th power module fails or the position of the power module changes, so that the power module is not in the preset corresponding position, thereby obtaining the first matching result of the i-th power module and the i-th first power channel.

[0094] The embodiment of the present application further provides a possible implementation of a method for controlling a power module, which controls M power modules to be turned on in sequence with corresponding power-on voltages according to a first preset sequence, and determines first output voltage sampling values ​​of the M power modules, including:

[0095] If the first matching result between the i-th power module and the i-th first power module is a successful match, then according to the first preset order, the i+1-th power module is controlled in sequence to start up with the corresponding start-up voltage, and the first output voltage sampling value of the i+1-th power module is determined.

[0096] For example, if the first matching result between the i-th power module and the i-th first power module is a successful match, the i-th power module is shut down by the controller, and the startup control logic of the i+1-th first power channel is continued according to the first preset sequence, that is, the parallel contactor between the i-th power module and the i+1-th power module is controlled by the controller to be attracted, and the i+1-th power module is controlled to be started with the corresponding i+1-th startup voltage, and the output voltage value of the i+1-th power module is sampled by the first terminal controller to determine the first output voltage sampling value of the i+1-th power module.

[0097] The embodiment of the present application further provides a possible implementation of a method for controlling a power module, which controls M power modules to be powered on in sequence with corresponding power-on voltages according to a second preset sequence, and determines second output voltage sampling values ​​of the M power modules, including:

[0098] If the first matching results of the M power modules and the M first power channels are all matched successfully, the M power modules are controlled to be turned on in sequence with corresponding power-on voltages according to a second preset sequence, and second output voltage sampling values ​​of the M power modules are determined.

[0099] In this embodiment, after matching the i+1th power module and the i+1th first power channel according to the first preset sequence, if the first matching result of the i+1th power module is successfully matched, the i+2th power module and the i+2th first power channel are matched, and if the first matching result of the i+2th power module is successfully matched, the i+3th power module and the i+3th first power channel are matched, and so on. If the first matching results of the M power modules are all successfully matched, then according to the second preset sequence, the startup control logic corresponding to the M second power channels is adopted to sequentially control the M power modules to start up with multiple startup voltage values, wherein, if the first preset sequence is the order in which power module 1 is connected to power module M, the startup voltage values ​​corresponding to the M power modules are startup voltage values ​​that increase in sequence, and if the first preset sequence is the order in which power module M is connected to power module 1, the startup voltage values ​​corresponding to the M power modules are startup voltage values ​​that decrease in sequence, and the output voltage values ​​of the M power modules are sampled by the second terminal controller to obtain the second output voltage sampling values ​​of the M power modules.

[0100] It should be noted that, according to the M startup voltage values ​​and the second output voltage sampling values ​​of the M power modules, the M power modules and the M second power channels are matched to obtain the second matching results of the M power modules.

[0101] The above embodiment can be further explained by a completed example. For example, it is assumed that the charging system includes a controller, 4 power modules, 2 terminal controllers, 3 sets of parallel contactors, and 2 DC output contactors. The startup voltage values ​​corresponding to the 4 power modules are set according to the types of the 4 power modules, which are respectively: 560V, 590V, 620V, and 650V. First, the controller controls the power module 1 to start up with the corresponding startup voltage value of 560V. After the power module 1 is turned on, the output voltage of the power module 1 is sampled by the terminal controller 1. The specific sampling position is to sample the voltage at the front section of the corresponding DC output contactor. It is judged whether the difference between the output voltage sampling value of the terminal controller 1 and 530V is within the preset voltage threshold, that is, the preset voltage threshold is 15V. If the difference is within 15V, it is considered that the power module 1 is matched successfully.

[0102] Then the controller controls the power module 1 to shut down, and then controls the parallel contactor 1 between the power module 1 and the power module 2 to be attracted, and the controller controls the power module 2 to start up with the corresponding startup voltage value of 590V. After the power module 2 is started, if the difference between the output voltage sampling value of the power module 2 by the terminal controller 1 and 590V is within 15V, it is considered that the power module 2 is matched successfully.

[0103] Then the controller controls the power module 2 to shut down, and then controls the parallel contactor 2 between the power module 2 and the power module 2 to be attracted, and the controller controls the power module 3 to start up with the corresponding startup voltage value of 620V. After the power module 3 is started, if the difference between the output voltage sampling value of the power module 3 by the terminal controller 1 and 620V is within 15V, it is considered that the power module 3 is matched successfully.

[0104] Then the controller controls the power module 3 to shut down, and then controls the parallel contactor 3 between the power module 3 and the power module 4 to attract, and controls the power module 4 to start up with the corresponding startup voltage value of 650V through the controller. After the power module 4 is turned on, if the difference between the output voltage sampling value of the power module 4 by the terminal controller 1 and 650V is within 15V, it is considered that the power module 4 is matched successfully, and then the power module 4 is controlled to shut down by the controller, and the parallel contactors 1-3 are controlled to be disconnected. At this time, the first matching results of the four power modules are all successful.

[0105] Then, the matching is performed according to the order from power module 4 to power module 1. Specifically, the power module 4 is controlled by the controller to start up with the corresponding startup voltage value of 650V. After the power module 4 is started up, if the difference between the output voltage sampling value of the power module 4 by the terminal controller 2 and 650V is not within 15V, it is considered that the power module 4 has failed to match, and the power channel matching is ended. If the difference between the output voltage sampling value of the power module 4 by the terminal controller 2 and 650V is within 15V, it is considered that the power module 4 has successfully matched, and then the power module 4 is controlled by the controller to shut down, and then the parallel contactor 3 between the power module 3 and the power module 4 is controlled to be attracted, and the power module 3 is controlled by the controller. Start up with the corresponding startup voltage value of 620V. After the power module 3 is turned on, if the difference between the output voltage sampling value of the power module 3 by the terminal controller 2 and 620V is not within 15V, it is considered that the power module 3 matches unsuccessfully, and the power channel matching is ended. If the difference between the output voltage sampling value of the power module 3 by the terminal controller 2 and 620V is within 15V, it is considered that the power module 3 matches successfully, and then the power module 3 is shut down by the controller, and then the parallel contactor 2 between the power module 2 and the power module 3 is controlled to be attracted, and so on. If the matching fails, the power channel matching is stopped. If the matching is successful, the matching of the power module 1 is completed, and the matching results of the four power modules are obtained.

[0106] In the method provided in the embodiment of the present application, when the first matching results of M power modules are all matched successfully, based on the second preset order, the M power modules are controlled to be turned on in sequence with the corresponding power-on voltage, and the second output voltage sampling values ​​of the M power modules are determined, and the M power modules are matched to obtain the second matching result, and then the power channel matching results of the multiple power modules are determined according to the first matching results and the second matching results of the M power modules, so as to determine which power modules should be called when the power modules are subsequently called for charging according to the power channel matching results, thereby avoiding safety hazards.

[0107] This embodiment further provides a possible implementation of a method for controlling a power module, which determines a callable power module from M power modules according to the first matching result and the second matching result, including:

[0108] According to the first matching result and the second matching result, power modules that are successfully matched are determined from the M power modules as callable power modules.

[0109] If the first matching result and the second matching result of the first target power module among the M power modules are both matched successfully, the power channel matching result of the first target power module is determined to be: matching successful, and the first target power module among the M power modules is determined to be a callable power module, and the matching power channels include: the first power channel corresponding to the first target power module and the second power channel corresponding to the first target power module.

[0110] For example, the matching results can be recorded in the output form of an array. For example, if the first target power module is power module 1, the first matching result can be expressed as "power module 1-terminal controller 1-matching successful", the second matching result can be expressed as "power module 1-terminal controller 2-matching successful", and the matching power channel can be expressed as "power module 1-terminal controller 1-terminal controller 2-matching successful".

[0111] If the first matching result of the second target power module among the multiple power modules is a matching success, but the second matching result is a matching failure, it is determined that the power channel matching result of the second target power module is: matching failure.

[0112] In the example, if the second target power module is power module 2, the first matching result can be expressed as "power module 2-terminal controller 1-matching successful", the second matching result can be expressed as "power module 2-terminal controller 2-matching failed", and the matching power channel can be expressed as "power module 2-terminal controller 1-terminal controller 2-matching failed".

[0113] The present application also provides another power channel matching method. Figure 3A schematic diagram of another power module control method provided in an embodiment of the present application. Figure 3 As shown, including:

[0114] S201 , sequentially controlling a plurality of power modules in a charging system to start up with corresponding plurality of startup voltage values ​​respectively, and obtaining output voltage sampling values ​​of a plurality of power modules sampled by a plurality of terminal controllers in the charging system.

[0115] S202: Determine a target power channel to which each power module belongs from power channels corresponding to the multiple terminal controllers according to a startup voltage value corresponding to each power module and corresponding output voltage sample values ​​sampled by the multiple terminal controllers.

[0116] S203. If the startup voltage value corresponding to the target power module among the multiple power modules matches the corresponding output voltage sampled by the target terminal controller among the multiple terminal controllers, determine that the power channel corresponding to the target terminal controller is the target power channel to which the target power module belongs.

[0117] For example, Figure 4 A schematic diagram of another charging system provided in an embodiment of the present application, combined with Figure 4 As shown, if the charging system includes: two charging guns, 8 power modules, and two terminal controllers, the two charging guns are charging gun A and charging gun B, and the terminal controller 1 can also be used as a controller to realize the control function of the system. Each power module has a fixed identifier, and the module identifiers are power module 1, power module 2, power module 3, power module 4, power module 5, power module 6, power module 7, and power module 8. The power modules can be divided into two groups, one group in the A channel and one group in the B channel. When the charging system is powered on, it is necessary to establish the corresponding relationship between the module identifier of each channel and the charging gun, that is, to identify the power channel of the specific power module and the corresponding charging gun.

[0118] If the difference between the output voltage sampling value of the terminal controller 1 for the power module 1 and the corresponding power-on voltage value of the power module 1 is within the preset voltage threshold, i.e. 15V, it is considered that the power module 1 is matched successfully, and the power channel to which the power module 1 belongs is the power channel to which the terminal controller 1 belongs. If the difference between the output voltage sampling value of the terminal controller 1 for the power module 1 and the corresponding power-on voltage value of the power module 1 is not within the preset voltage threshold, it is considered that the power module 1 is matched unsuccessfully.

[0119] In the method provided in the embodiment of the present application, the power channel of the power module is judged by the output voltage sampling value and the power-on voltage value of the terminal controller, so that the charging gun A and the charging gun B can call the module normally when the module is called.

[0120] The following is a corresponding explanation of the power module control device, electronic device and storage medium provided for executing any of the above embodiments of the present application. The specific implementation process and the technical effects produced are the same as those of the corresponding method embodiments mentioned above. For the sake of brief description, the parts not mentioned in this embodiment can refer to the corresponding contents in the method embodiments.

[0121] Figure 5 This is a functional module diagram of a power module control device provided in an embodiment of the present application. Figure 5 As shown, the power module control device 100 includes:

[0122] The control module 110 is used to control the M power modules to start up in sequence with corresponding start-up voltages according to a first preset sequence, and determine first output voltage sampling values ​​of the M power modules;

[0123] A matching module 120, configured to obtain a first matching result of the M power modules and the M first power channels according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules;

[0124] The control module 110 is further used to control the M power modules to start up in sequence with corresponding start-up voltages according to a second preset sequence, and determine the second output voltage sampling values ​​of the M power modules;

[0125] The matching module 120 is further used to obtain a second matching result of the M power modules and the M second power channels according to the startup voltages of the M power modules and the second output voltage sampling values ​​of the M power modules;

[0126] The determination module 130 is configured to determine a callable power module from the M power modules according to the first matching result and the second matching result.

[0127] In an optional embodiment, the control module 110 is also used to control each power module from the Mth power module to the i+1th power module among the M power modules to start up with a corresponding start-up voltage according to a second preset order if the first matching result between the i-th power module and the i-th first power channel is a matching failure, and determine the second output voltage sampling value of each power module; wherein i is any integer in [1,M], and M is the number of power modules.

[0128] In an optional embodiment, the matching module 120 is further used to determine whether the i-th power module and the i+1-th power module are swapped in position according to the first output voltage sampling value corresponding to the i-th power module and the second output voltage sampling value corresponding to the i+1-th power module if the first matching result between the i-th power module and the i-th first power channel is a matching failure, and the second matching result between the i+1-th power module and the i+1-th second power channel is a matching failure; wherein i is any integer in [1,M], and M is the number of power modules.

[0129] In an optional implementation manner, the power module control device 100 further includes:

[0130] The reset module is used to reset the module identifiers of the i-th power module and the i+1-th power module if the positions of the i-th power module and the i+1-th power module are swapped.

[0131] In an optional embodiment, the matching module 120 is further used to match the i-th power module and the i-th first power channel according to the power-on voltage value of the i-th power module and the first output voltage sampling value of the i-th power module, to obtain a first matching result of the i-th power module and the i-th first power channel to indicate whether the i-th power module and the i-th first power channel are successfully matched; wherein i is any integer in [1,M], and M is the number of power modules.

[0132] In an optional embodiment, the control module 110 is also used to control the i+1th power module to start up with the corresponding start-up voltage in sequence according to a first preset order if the first matching result between the i-th power module and the i-th first power module is a successful match, and determine the first output voltage sampling value of the i+1th power module.

[0133] In an optional embodiment, the control module 110 is also used to control the M power modules to be powered on in sequence with corresponding power-on voltages according to a second preset order if the first matching results of the M power modules and the M first power channels are all successfully matched, and determine the second output voltage sampling values ​​of the M power modules.

[0134] In an optional implementation, the control module 110 is further configured to control the M power modules to be powered on in sequence at a plurality of increasing power-on voltages according to a first preset sequence.

[0135] In an optional implementation, the control module 110 is further configured to control the M power modules to start up in sequence at corresponding startup voltages using startup control logics corresponding to the M first power channels according to a first preset sequence.

[0136] In an optional implementation, the control module 110 is further configured to control the M power modules to start up with corresponding startup voltages according to a second preset sequence and using startup control logics corresponding to the M second power channels.

[0137] In an optional implementation, the control module 110 is further configured to determine, according to the first matching result and the second matching result, from the M power modules, the power modules that have all been successfully matched as the callable power modules.

[0138] The above-mentioned device is used to execute the method provided by the aforementioned embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0139] The above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more microprocessors, or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0140] Figure 6 This is a schematic diagram of an electronic device provided in an embodiment of the present application, which can be used for power module control. Figure 6 As shown, the electronic device 200 includes: a processor 210 , a storage medium 220 , and a bus 230 .

[0141] The storage medium 220 stores machine-readable instructions executable by the processor 210. When the electronic device is running, the processor 210 communicates with the storage medium 220 via the bus 230, and the processor 210 executes the machine-readable instructions to perform the steps of the above method embodiment. The specific implementation method and technical effect are similar and will not be repeated here.

[0142] Optionally, the present application further provides a storage medium 220, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method embodiment are executed. The specific implementation method and technical effect are similar and will not be repeated here.

[0143] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0144] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0145] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0146] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random access memory (English: Random Access Memory, referred to as: RAM), disk or optical disk and other media that can store program codes.

[0147] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A power module control method, characterized in that: A controller applied to a charging system, the method comprising: According to a first preset sequence, control the M power modules to start up in sequence with corresponding start-up voltages, and determine first output voltage sampling values ​​of the M power modules; Obtaining a first matching result of the M power modules and the M first power channels according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules; According to a second preset sequence, controlling the M power modules to start up in sequence with corresponding start-up voltages, and determining second output voltage sampling values ​​of the M power modules; Obtaining a second matching result of the M power modules and the M second power channels according to the startup voltages of the M power modules and the second output voltage sampling values ​​of the M power modules; Determining a callable power module from the M power modules according to the first matching result and the second matching result; The controlling the M power modules to start up in sequence with corresponding start-up voltages according to the second preset sequence, and determining the second output voltage sampling values ​​of the M power modules, comprises: If the first matching results of the M power modules and the M first power channels are all matched successfully, then according to the second preset sequence, the M power modules are controlled to be turned on in sequence with corresponding power-on voltages, and second output voltage sampling values ​​of the M power modules are determined; The determining, according to the first matching result and the second matching result, a callable power module from the M power modules includes: According to the first matching result and the second matching result, a power module that has been successfully matched is determined from the M power modules as the callable power module.

2. The method according to claim 1, characterized in that The controlling the M power modules to start up in sequence with corresponding start-up voltages according to the second preset sequence, and determining the second output voltage sampling values ​​of the M power modules, comprises: If the first matching result between the i-th power module and the i-th first power channel is a matching failure, then according to a second preset order, each power module from the M-th power module to the i+1-th power module among the M power modules is controlled to be powered on with a corresponding power-on voltage, and a second output voltage sampling value of each power module is determined; wherein, i is any integer in [1,M], and M is the number of power modules.

3. The method according to claim 1, characterized in that The method further comprises: If the first matching result between the i-th power module and the i-th first power channel is a matching failure, and the second matching result between the i+1-th power module and the i+1-th second power channel is a matching failure, then determine whether the i-th power module and the i+1-th power module are positionally swapped based on the first output voltage sampling value corresponding to the i-th power module and the second output voltage sampling value corresponding to the i+1-th power module; wherein i is any integer in [1,M], and M is the number of power modules.

4. The method according to claim 3, characterized in that The method further comprises: If the positions of the i-th power module and the i+1-th power module are swapped, the module identifiers of the i-th power module and the i+1-th power module are reset.

5. The method according to claim 1, characterized in that The obtaining, according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules, a first matching result of the M power modules and the M first power channels comprises: According to the power-on voltage value of the i-th power module and the first output voltage sampling value of the i-th power module, the i-th power module and the i-th first power channel are matched to obtain a first matching result of the i-th power module and the i-th first power channel to indicate whether the i-th power module and the i-th first power channel are successfully matched; wherein, i is any integer in [1,M], and M is the number of power modules.

6. The method according to claim 1, characterized in that The controlling the M power modules to start up in sequence with corresponding start-up voltages according to the first preset sequence, and determining the first output voltage sampling values ​​of the M power modules, comprises: If the first matching result between the i-th power module and the i-th first power module is a successful match, then according to the first preset order, the i+1-th power module is controlled in sequence to start up with the corresponding start-up voltage, and the first output voltage sampling value of the i+1-th power module is determined, wherein i is any integer in [1,M], and M is the number of power modules.

7. The method according to claim 1, characterized in that The controlling the M power modules to start up in sequence with corresponding startup voltages according to the first preset sequence includes: According to the first preset sequence, the M power modules are controlled to be powered on in sequence with a plurality of increasing power-on voltages.

8. The method according to claim 1, characterized in that The controlling the M power modules to start up in sequence with corresponding startup voltages according to the first preset sequence includes: According to the first preset sequence, the startup control logic corresponding to the M first power channels is adopted to control the M power modules to be started up in sequence at the corresponding startup voltages.

9. The method according to claim 1, characterized in that: The controlling the M power modules to start up in sequence with corresponding startup voltages according to the second preset sequence includes: According to the second preset sequence, the M power modules are controlled to be powered on in sequence at a plurality of decreasing power-on voltages.

10. The method according to claim 1, characterized in that The controlling the M power modules to start up in sequence with corresponding startup voltages according to the second preset sequence includes: According to the second preset sequence, the startup control logic corresponding to the M second power channels is adopted to control the M power modules to start up with the corresponding startup voltage.

11. A power module control device, characterized in that: Controllers for charging systems include: A control module, configured to control the M power modules to start up in sequence with corresponding start-up voltages according to a first preset sequence, and determine first output voltage sampling values ​​of the M power modules; A matching module, used for obtaining a first matching result of the M power modules and the M first power channels according to the startup voltages of the M power modules and the first output voltage sampling values ​​of the M power modules; The control module is further used to control the M power modules to start up in sequence with corresponding start-up voltages according to a second preset sequence, and determine second output voltage sampling values ​​of the M power modules; The matching module is further used to obtain a second matching result of the M power modules and the M second power channels according to the startup voltages of the M power modules and the second output voltage sampling values ​​of the M power modules; A determination module, configured to determine a callable power module from the M power modules according to the first matching result and the second matching result; The control module is further configured to control the M power modules to start up in sequence with corresponding start-up voltages according to the second preset sequence if the first matching results of the M power modules and the M first power channels are all matched successfully, and determine the second output voltage sampling values ​​of the M power modules; The determining module is used to determine, according to the first matching result and the second matching result, from the M power modules that have all been successfully matched as the callable power module.

12. A charging system, characterized in that: include: A controller, N terminal controllers, and M power modules, wherein the input ends of the M power modules are used to connect to a preset power supply, and the output end of each power module is connected to N charging interfaces, and the N charging interfaces are respectively used to connect to N charging guns; the N terminal controllers are also connected to the N charging interfaces; The controller is communicatively connected to the N terminal controllers, and the controller is also communicatively connected to the M power modules. The controller is used to execute the steps of the power module control method as described in any one of claims 1 to 10.

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