A charging method, device, computer readable storage medium and charging pile

Abstract

The application belongs to the technical field of charging management, and particularly relates to a charging method and device, a computer readable storage medium and a charging pile. The method comprises the following steps: obtaining a target charging demand of a vehicle; determining each power distribution combination based on the target charging demand; determining each candidate relay combination corresponding to each power distribution combination; if two or more candidate relays are included in each candidate relay combination, respectively calculating a relay wear balance degree corresponding to each candidate relay combination; wherein the relay wear balance degree is used to represent the balance degree of the wear degree of each candidate relay in the candidate relay combination; determining the candidate relay combination corresponding to the maximum value in each relay wear balance degree as a target relay combination; and charging the vehicle based on the target relay combination.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of charging management, and particularly relates to a charging method and device, a computer readable storage medium and a charging pile. BACKGROUND

[0002] With the development of the electric vehicle industry, the demand for construction of charging facilities has also increased substantially. Compared with traditional single-power charging piles, a matrix-type flexible charging pile can allocate charging power according to the charging demand of the battery management system of a vehicle, and dynamically allocate the charging power of each charging module to each charging gun.

[0003] When the charging power is allocated, the charging modules and the charging guns in the matrix-type flexible charging pile are connected or disconnected through relays. Influenced by factors such as the installation position of the charging gun and user habits, the use frequency of each charging gun is different, which eventually leads to inconsistent wear and tear of each relay. The wear and tear of some relays may be significantly higher than that of other relays, and the relays with higher wear and tear may have performance degradation or failure, which eventually affects the normal operation of the charging pile. SUMMARY

[0004] Therefore, the embodiments of the present application provide a charging method, device, computer readable storage medium and charging pile to solve the problem that the existing charging method affects the service life of the charging pile.

[0005] The first aspect of the embodiments of the present application provides a charging method, which can include:

[0006] obtaining a target charging demand of a vehicle;

[0007] determining each power allocation combination based on the target charging demand;

[0008] determining each candidate relay combination corresponding to each power allocation combination;

[0009] if each candidate relay combination includes two or more candidate relays, calculating a relay wear and tear balance degree corresponding to each candidate relay combination; wherein the relay wear and tear balance degree is used to represent the balance degree of the wear and tear of each candidate relay in the candidate relay combination;

[0010] determining the candidate relay combination corresponding to the maximum value in each relay wear and tear balance degree as a target relay combination;

[0011] charging the vehicle based on the target relay combination.

[0012] A second aspect of the embodiments of the present application provides a charging device, which may include:

[0013] A target charging demand acquisition module is used to obtain the target charging demand of the vehicle;

[0014] a power allocation combination determining module, configured to determine each power allocation combination based on the target charging demand;

[0015] A candidate relay combination determination module is used to determine each candidate relay combination corresponding to each power distribution combination;

[0016] a wear leveling degree calculation module, configured to calculate the relay wear leveling degree corresponding to each candidate relay combination if each candidate relay combination includes more than two candidate relays; wherein the relay wear leveling degree is used to represent the degree of balance of the wear degree of each candidate relay in the candidate relay combination;

[0017] a target relay combination determining module, configured to determine the candidate relay combination corresponding to the maximum value among the wear leveling degrees of the relays as the target relay combination;

[0018] A vehicle charging module is configured to charge the vehicle based on the target relay combination.

[0019] A third aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of any of the above-mentioned charging methods are implemented.

[0020] A fourth aspect of an embodiment of the present application provides a charging stack, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any one of the above-mentioned charging methods when executing the computer program.

[0021] A fifth aspect of the embodiments of the present application provides a computer program product. When the computer program product is run on a charging stack, the charging stack is caused to execute the steps of any one of the above-mentioned charging methods.

[0022] Compared with the prior art, the embodiments of the present application have the following beneficial effects: the embodiments of the present application obtain the target charging demand of the vehicle; based on the target charging demand, determine each power distribution combination; determine each candidate relay combination corresponding to each power distribution combination; if each candidate relay combination includes more than two candidate relays, calculate the relay wear balance degree corresponding to each candidate relay combination; wherein the relay wear balance degree is used to characterize the balance degree of wear of each candidate relay in the candidate relay combination; determine the candidate relay combination corresponding to the maximum value of each relay wear balance degree as the target relay combination; based on the target relay combination, charge the vehicle. Through the embodiments of the present application, the relay wear balance degree of the candidate relay combination can be calculated, and charging can be performed according to the relay combination with the most balanced relay wear, thereby better balancing the wear degree of each relay, which helps to improve the service life and operational stability of the charging stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 A schematic diagram of an application scenario of an embodiment of the present application;

[0025] Figure 2 This is a flow chart of an embodiment of a charging method in an embodiment of the present application;

[0026] Figure 3 This is a structural diagram of an embodiment of a charging device in an embodiment of the present application;

[0027] Figure 4 This is a schematic block diagram of a charging stack in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described below are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0029] It should be understood that the word “comprising” when used in this specification and appended claims specifies the presence of stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0030] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0031] It should further be understood that the term “and / or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, and that the term “at least one of’ denotes one, or a plurality of, or any combination of the listed items.

[0032] As used in this specification and any claims of this application, the terms “if’ and “when” can be interpreted to mean “upon” or “in response to a determination” or “in response to a detection” of, as appropriate. Similarly, the phrase “if it is determined” or “if [a described condition or event] is detected” can be interpreted to mean “upon determining” or “in response to a determination” or “upon detecting [the described condition or event]” or “in response to a detection [of the described condition or event],” as appropriate.

[0033] In addition, in the description of the application, the terms “first”, “second”, “third”, etc. are used only to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0034] With the development of the electric vehicle industry, the demand for charging facilities has also increased significantly. Compared with traditional single-power charging piles, matrix flexible charging piles can allocate charging power according to the charging demand of the battery management system of the vehicle, and dynamically allocate the charging power of each charging module to each charging gun.

[0035] When performing charging power allocation, the charging modules in the matrix flexible charging pile can be connected or disconnected with the charging guns through relays. If the relay between a certain charging module and a certain charging gun is closed, the charging module can be connected with the charging gun to provide charging power for the charging gun.

[0036] For example, please refer to Figure 1The matrix type flexible charging stack includes 4 charging modules, namely charging module 1, charging module 2, charging module 3 and charging module 4. The matrix type flexible charging stack also includes 4 charging guns, namely charging gun 1, charging gun 2, charging gun 3 and charging gun 4. Through relays K11, K21, K31 and K41, charging gun 1 can be connected or disconnected with charging module 1, charging module 2, charging module 3 and charging module 4 respectively; through relays K12, K22, K32 and K41, charging gun 1 can be connected or disconnected with charging module 1, charging module 2, charging module 3 and charging module 4 respectively. K42, charging gun 2 can be connected or disconnected with charging module 1, charging module 2, charging module 3 and charging module 4 respectively; through relay K13, relay K23, relay K33 and relay K43, charging gun 3 can be connected or disconnected with charging module 1, charging module 2, charging module 3 and charging module 4 respectively; through relay K14, relay K24, relay K34 and relay K44, charging gun 4 can be connected or disconnected with charging module 1, charging module 2, charging module 3 and charging module 4 respectively.

[0037] Due to factors such as the installation location of the charging gun and user habits, the usage frequency of each charging gun may be different, resulting in the wear of some relays being significantly higher than that of other relays; and relays with higher wear may experience performance degradation or failure, which will ultimately affect the normal operation of the charging stack.

[0038] For example, see Figure 1 If a user selects charging gun 1 for charging four times within a period of time, and charging module 1 is activated each time, that is, relay K11 is closed four times, then during the above charging process, the frequency of use of relay K11 is higher than the frequency of use of other relays; if this continues for a long time, relay K11 may experience performance degradation or failure, affecting the service life of the charging stack.

[0039] In view of this, embodiments of the present application provide a charging method, device, computer-readable storage medium, and charging stack to solve the problem that existing charging methods affect the service life of the charging stack.

[0040] It should be noted that the execution subject of the method of the present application is a charging stack, which can be a matrix-type flexible charging stack or other common charging stacks.

[0041] See also Figure 2 In the embodiment of the present application, a charging method may include:

[0042] Step S201: Obtain the target charging requirement of the vehicle.

[0043] When the user needs to charge the vehicle, he can choose any available charging gun to charge. At this time, the charging pile can obtain the target charging requirements of the vehicle.

[0044] Specifically, the charging stack can communicate with the vehicle's Battery Management System (BMS) based on a preset communication protocol. The BMS can collect the vehicle's battery status information and send it to the charging stack, which can then determine the vehicle's target charging requirements based on the status information provided by the BMS. Alternatively, the BMS can determine the vehicle's target charging requirements based on the battery status information and send the target charging requirements to the charging stack.

[0045] Here, the target charging demand may include a required charging power of the vehicle.

[0046] Step S202: Determine various power allocation combinations based on the target charging demand.

[0047] In the embodiment of the present application, the charging stack can include a preset number of charging modules, each of which can be connected in parallel to the power bus via relays, so that an appropriate number of charging modules can be selected according to actual charging needs to provide charging power to the charging gun. The number of charging modules included in the charging stack can be set according to actual needs and is not limited in the embodiment of the present application.

[0048] Specifically, the number of charging modules that need to be enabled and the distribution combination of charging power can be determined according to the target charging demand.

[0049] For example, a charging stack includes four charging modules, and the upper limit of the charging power of each charging module is 50 kW. If the target charging demand is 100 kW, then the 100 kW can be distributed to two or more charging modules during charging. Specifically, the 100 kW can be distributed to two charging modules in a power distribution combination of 50 kW and 50 kW; or the 100 kW can be distributed to three charging modules in a power distribution combination of 20 kW, 30 kW, and 50 kW; or the 100 kW can be distributed to three charging modules in a power distribution combination of 10 kW, 40 kW, and 50 kW.

[0050] In an embodiment of the present application, in order to improve the allocation efficiency, a correspondence between the charging demand (required charging power) and the power allocation combination corresponding to the charging demand can be pre-constructed. Here, this correspondence can be referred to as a demand-power correspondence; when determining the power allocation combination based on the target charging demand, the constructed demand-power correspondence can be directly used to determine the various power allocation combinations corresponding to the target charging demand.

[0051] As an example only, the required power correspondence can be shown in the following table:

[0052]

[0053] The demand-power mapping relationship can include each charging demand and the corresponding power allocation combination. Based on the demand-power mapping relationship, the power allocation combinations corresponding to the target charging demand can be efficiently determined. For example, if the target charging demand is 40 kW, the demand-power mapping relationship can determine a unique power allocation combination corresponding to 40 kW. For another example, if the target charging demand is 60 kW, the demand-power mapping relationship can determine three different power allocation combinations corresponding to 60 kW.

[0054] Step S203: Determine candidate relay combinations corresponding to respective power allocation combinations.

[0055] Specifically, an available relay corresponding to a target charging gun may be determined; wherein the available relay corresponding to the target charging gun is a relay between a charging module and the target charging gun, and the target charging gun is a charging gun used to charge a vehicle.

[0056] For example, see Figure 1 If the target charging gun is charging gun 1, relay K11 is the relay between charging module 1 and charging gun 1, relay K21 is the relay between charging module 2 and charging gun 1, relay K31 is the relay between charging module 3 and charging gun 1, and relay K41 is the relay between charging module 4 and charging gun 1. Based on this, it can be determined that the available relays corresponding to the target charging gun are relay K11, relay K21, relay K31, and relay K41.

[0057] In an embodiment of the present application, the number of candidate relays included in the power distribution combination can be determined. Specifically, the number of candidate relays is the same as the number of charging modules that need to be enabled in the power distribution combination. For example, if the power distribution combination is 20 kilowatts, 30 kilowatts, and 50 kilowatts, it can be determined that 3 different charging modules need to be enabled at the same time to share the 3 types of charging power, that is, 3 different relays need to be closed; therefore, it can be determined that the number of candidate relays included in the power distribution combination is 3. For another example, if the power distribution combination is 30 kilowatts, it can be determined that 1 charging module needs to be enabled, that is, 1 relay needs to be closed; therefore, it can be determined that the number of candidate relays included in the power distribution combination is 1.

[0058] Afterwards, each candidate relay can be determined from the available relays based on the number of candidate relays included in the power distribution combination; based on each candidate relay, a candidate relay combination can be determined.

[0059] For example, referring to Figure 1 , the target charging gun is charging gun 1, the available relays are relay K11, relay K21, relay K31 and relay K41, and the number of candidate relays included in the power distribution combination is 3, then 3 available relays can be selected from relay K11, relay K21, relay K31 and relay K41 as candidate relays; based on each selected candidate relay, a candidate relay combination can be determined; specifically, if the selected candidate relays are relay K11, relay K21 and relay K31, then a candidate relay combination 1 can be determined based on relay K11, relay K21 and relay K31; if the selected candidate relays are relay K21, relay K31 and relay K41, then a candidate relay combination 2 can be determined based on relay K21, relay K31 and relay K41; if the selected candidate relays are relay K11, relay K31 and relay K41, then a candidate relay combination 3 can be determined based on relay K11, relay K31 and relay K41; if the selected candidate relays are relay K11, relay K21 and relay K41, then a candidate relay combination 4 can be determined based on relay K11, relay K21 and relay K41.

[0060] In step S204, if each candidate relay combination includes two or more candidate relays, then the relay wear balancing degree corresponding to each candidate relay combination is calculated.

[0061] In the embodiments of the present application, in order to make the wear degree of each relay in the charging pile more balanced, when determining the relays to be closed, the wear degree of each relay can be considered, and a relay combination with a more balanced wear degree is selected to close the charging.

[0062] For example, if the difference between the wear degree of relay A and relay B is small, and the difference between the wear degree of relay A and relay C is large, then when 2 relays need to be closed, relay A and relay B can be preferred to be closed, so that the wear degree of the relays remains similar.

[0063] In the embodiments of the present application, the wear degree of the candidate relays in the candidate relay combination can be calculated, and the target relay combination can be determined based on the wear degree of each candidate relay.

[0064] Specifically, the closing times of the candidate relays can be calculated, and the wear degree of the candidate relays can be determined based on the closing times of the candidate relays.

[0065] In the embodiments of the present application, the closing times of the relays can be preferably used as the wear degrees of the relays. The greater the closing times of the relays are, the greater the wear degrees of the relays are; and the smaller the closing times of the relays are, the smaller the wear degrees of the relays are.

[0066] If each candidate relay combination includes two or more candidate relays, the relay wear balancing degree corresponding to the candidate relay combination needs to be calculated, and the target relay combination can be determined according to the relay wear balancing degree of the candidate relay combination. The relay wear balancing degree can be used to represent the balancing degree of the wear degrees of the candidate relays in the candidate relay combination.

[0067] Specifically, for a certain candidate relay combination, when the relay wear balancing degree of the candidate relay combination is calculated, the wear degrees of the candidate relays in the candidate relay combination can be calculated first; then, the relay wear balancing degree of the candidate relay combination can be determined based on the wear degrees of the candidate relays in the candidate relay combination; here, the dispersion degree of the wear degrees of the candidate relays in the candidate relay combination can be calculated, and the relay wear balancing degree of each candidate relay can be determined based on the dispersion degree of the wear degrees of the candidate relays.

[0068] If the dispersion degree of the wear degrees of the candidate relays in the candidate relay combination is greater, it can be considered that there is a significant difference in the wear conditions of the candidate relays in the candidate relay combination, and thus it can be considered that the relay wear balancing degree of the candidate relay combination is smaller; on the contrary, it can be considered that the relay wear balancing degree of the candidate relay combination is greater.

[0069] Here, the dispersion degree can be any one of the commonly used indexes for representing the dispersion degree of a data set, such as the standard deviation, the variance, the range, etc., which are not limited in the present application.

[0070] In a specific implementation manner of the embodiments of the present application, the relay wear balancing degree of the candidate relay combination can be determined based on the standard deviation of the wear degrees of the candidate relays. Specifically, the average value of the wear degrees of the candidate relays can be calculated first

[0071]

[0072] Where n is the number of candidate relays in the candidate relay combination, and E(i) is the wear degree (i.e., the number of closures) of the i-th candidate relay in the candidate relay combination. The standard deviation Dev of the wear degree of the candidate relay combination can then be calculated:

[0073]

[0074] If the Dev of the wear degree of the candidate relay combination is larger, it can be considered that the difference in the wear conditions of each candidate relay in the candidate relay combination is larger, and the degree of relay wear balance of the candidate relay combination is smaller; if the Dev of the wear degree of the candidate relay combination is smaller, it can be considered that the difference in the wear conditions of each candidate relay in the candidate relay combination is smaller, and the degree of relay wear balance of the candidate relay combination is larger.

[0075] In another specific implementation of the embodiment of the present application, the degree of relay wear balance of the candidate relay combination can be determined based on the variance of the wear degree of each candidate relay. Specifically, the average value of the wear degree of each candidate relay can be calculated first. Afterwards, the variance Var of the wear degree of the candidate relay combination can be calculated:

[0076]

[0077] If the Var of the wear degree of the candidate relay combination is larger, it can be considered that the difference in the wear conditions of each candidate relay in the candidate relay combination is larger, and the degree of relay wear balance of the candidate relay combination is smaller; if the Var of the wear degree of the candidate relay combination is smaller, it can be considered that the difference in the wear conditions of each candidate relay in the candidate relay combination is smaller, and the degree of relay wear balance of the candidate relay combination is greater.

[0078] In another specific implementation of the embodiment of the present application, the relay wear balance degree of the candidate relay combination can be determined based on the range of wear degrees of each candidate relay; the calculation formula of the range is as follows:

[0079] Range=E max -E min

[0080] Among them, E max is the maximum wear degree of each candidate relay in the candidate relay combination, E minThe minimum value of the wear degree of each candidate relay in the candidate relay combination. If the Range of the wear degree of the candidate relay combination is larger, it can be considered that the difference of the wear condition of each candidate relay in the candidate relay combination is larger, and the relay wear balancing degree of the candidate relay combination is smaller; if the Range of the wear degree of the candidate relay combination is smaller, it can be considered that the difference of the wear condition of each candidate relay in the candidate relay combination is smaller, and the relay wear balancing degree of the candidate relay combination is larger.

[0081] Step S205, determining the candidate relay combination corresponding to the maximum value in the relay wear balancing degree as the target relay combination.

[0082] If the relay wear balancing degree of a certain candidate relay combination is larger, it indicates that the wear degree of each candidate relay in the candidate relay combination is more balanced. In the embodiment of the present application, the candidate relay combination corresponding to the maximum value in the relay wear balancing degree can be determined as the target relay combination.

[0083] For example, in the above calculation process, if the relay wear balancing degree of the candidate relay combination is determined based on the standard deviation of the wear degree of each candidate relay, the candidate relay combination corresponding to the minimum value of the standard deviation of the wear degree can be determined as the target relay combination.

[0084] For another example, in the above calculation process, if the relay wear balancing degree of the candidate relay combination is determined based on the variance of the wear degree of each candidate relay, the candidate relay combination corresponding to the minimum value of the variance of the wear degree can be determined as the target relay combination.

[0085] For another example, in the above calculation process, if the relay wear balancing degree of the candidate relay combination is determined based on the range of the wear degree of each candidate relay, the candidate relay combination corresponding to the minimum value of the range of the wear degree can be determined as the target relay combination.

[0086] In the embodiment of the present application, if each candidate relay combination includes only one candidate relay, the candidate relay combination corresponding to the minimum value of the wear degree of each candidate relay can be determined as the target relay combination. The target relay combination is the relay combination used for charging.

[0087] For example, there is a candidate relay combination 1, which specifically includes candidate relay K11; there is also a candidate relay combination 2, which specifically includes candidate relay K21; there is also a candidate relay combination 3, which specifically includes candidate relay K31; there is also a candidate relay combination 4, which specifically includes candidate relay K41; if the number of closures of candidate relay K31 is less than that of other candidate relays, it can be considered that the degree of wear of candidate relay K31 is less than that of other candidate relays, and therefore, the candidate relay combination corresponding to candidate relay K31 (i.e., candidate relay combination 3) can be determined as the target relay combination.

[0088] In one specific implementation, a dynamic array can be established and maintained based on the number of closures of each relay. The dynamic array includes data recording units, each of which corresponds to a relay. That is, the value of each data recording unit is the number of closures of a relay. Based on this, the degree of wear of candidate relays can be efficiently determined. Optionally, the data recording units can be sorted from smallest to largest according to their values ​​(i.e., the number of closures of the relays). When each candidate relay combination includes only one candidate relay, the relay corresponding to the data recording unit at the top of the dynamic array can be determined, and the candidate relay combination corresponding to this relay can be determined as the target relay combination.

[0089] Step S206: Charging the vehicle based on the target relay combination.

[0090] In an embodiment of the present application, a target charging module may be determined based on a target relay combination.

[0091] For example, see Figure 1 If the target relay combination includes relay K11 and relay K21, relay K11 is the relay between charging module 1 and charging gun 1, and relay K21 is the relay between charging module 2 and charging gun 1. Therefore, it can be determined that the target charging modules corresponding to the target relay combination are charging module 1 and charging module 2.

[0092] Based on the target charging module, the vehicle can be charged. Specifically, the target relay combination can be controlled to close so that the target charging gun can charge the vehicle using the target charging module.

[0093] In summary, the embodiment of the present application obtains the target charging demand of the vehicle; based on the target charging demand, determines each power distribution combination; determines each candidate relay combination corresponding to each power distribution combination; if each candidate relay combination includes more than two candidate relays, then calculates the relay wear balance degree corresponding to each candidate relay combination; wherein the relay wear balance degree is used to characterize the balance degree of wear of each candidate relay in the candidate relay combination; determines the candidate relay combination corresponding to the maximum value of each relay wear balance degree as the target relay combination; based on the target relay combination, charges the vehicle. Through the embodiment of the present application, the relay wear balance degree of the candidate relay combination can be calculated, and charging can be performed according to the relay combination with the most balanced relay wear, so as to better balance the wear degree of each relay, which helps to improve the service life and operational stability of the charging stack.

[0094] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0095] Corresponding to a charging method described in the above embodiment, Figure 3 A structural diagram of an embodiment of a charging device provided in an embodiment of the present application is shown.

[0096] In an embodiment of the present application, a charging device may include:

[0097] A target charging demand acquisition module 301 is used to acquire a target charging demand of a vehicle;

[0098] A power allocation combination determining module 302 is configured to determine various power allocation combinations based on the target charging demand;

[0099] A candidate relay combination determination module 303 is used to determine each candidate relay combination corresponding to each power allocation combination;

[0100] a wear leveling calculation module 304 for calculating the relay wear level corresponding to each candidate relay combination if each candidate relay combination includes more than two candidate relays; wherein the relay wear level is used to represent the degree of wear balance of each candidate relay in the candidate relay combination;

[0101] A target relay combination determining module 305 is configured to determine the candidate relay combination corresponding to the maximum value of the wear leveling degrees of each relay as a target relay combination;

[0102] a vehicle charging module 306, configured to charge the vehicle based on the target relay combination.

[0103] In an implementation of the embodiment of the present application, the device further comprises:

[0104] a wear degree calculation module, configured to calculate a wear degree of the candidate relay in each candidate relay combination if only one candidate relay is included in each candidate relay combination;

[0105] Further, the target relay combination determination module can be further configured to determine the candidate relay combination corresponding to the minimum value in the wear degrees of the candidate relays as the target relay combination.

[0106] In an implementation of the embodiment of the present application, the wear balance degree calculation module comprises:

[0107] a wear degree calculation sub-module, configured to calculate the wear degree of each candidate relay in the candidate relay combination;

[0108] a wear balance degree determination sub-module, configured to determine the relay wear balance degree of the candidate relay combination based on the wear degree of each candidate relay.

[0109] In an implementation of the embodiment of the present application, the wear balance degree determination sub-module comprises:

[0110] a wear balance degree determination first unit, configured to determine the relay wear balance degree of the candidate relay combination based on the standard deviation of the wear degree of each candidate relay;

[0111] a wear balance degree determination second unit, configured to determine the relay wear balance degree of the candidate relay combination based on the variance of the wear degree of each candidate relay;

[0112] a wear balance degree determination third unit, configured to determine the relay wear balance degree of the candidate relay combination based on the range of the wear degree of each candidate relay.

[0113] In an implementation of the embodiment of the present application, the power distribution combination determination module comprises:

[0114] a power distribution combination determination sub-module, configured to determine each power distribution combination corresponding to the target charging demand based on a preset demand power corresponding relationship; wherein the demand power corresponding relationship is a corresponding relationship between a charging demand and a power distribution combination.

[0115] In a possible implementation of the embodiment of the application, the candidate relay combination determination module comprises:

[0116] a usable relay determination sub-module, configured to determine usable relays corresponding to the target charging gun;

[0117] a candidate relay determination sub-module, configured to determine each candidate relay from the usable relays based on the number of candidate relays in the power distribution combination;

[0118] a candidate relay combination determination sub-module, configured to determine the candidate relay combination based on each candidate relay.

[0119] In a possible implementation of the embodiment of the application, the vehicle charging module comprises:

[0120] a target charging module determination sub-module, configured to determine a target charging module based on the target relay combination;

[0121] a vehicle charging sub-module, configured to charge the vehicle based on the target charging module.

[0122] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the apparatuses, modules and units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be described herein.

[0123] In the foregoing embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in detail in a certain embodiment can refer to the relevant description of other embodiments.

[0124] Figure 4 A schematic block diagram of a charging pile provided in an embodiment of the application is shown, and only parts related to the embodiments of the application are shown for the convenience of description.

[0125] As shown in Figure 4 , the charging pile 4 of this embodiment comprises a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40. The processor 40 implements the steps in each of the foregoing charging method embodiments when executing the computer program 42, for example, steps S201 to S206 as shown in Figure 2 . Alternatively, the processor 40 implements the functions of each module / unit in the foregoing apparatus embodiments when executing the computer program 42, for example, the functions of the modules 301 to 306 as shown in Figure 3 .

[0126] For example, the computer program 42 can be divided into one or more modules / units, which are stored in the memory 41 and executed by the processor 40 to complete the present application. The one or more modules / units can be a series of computer program instruction segments capable of completing a specific function, which are used to describe the execution process of the computer program 42 in the charging pile 4.

[0127] Those skilled in the art can understand that, Figure 4 The charging pile 4 is only an example and does not constitute a limitation on the charging pile 4, and can include more or fewer components than those shown, or combine certain components, or different components, for example, the charging pile 4 can also include input / output devices, network access devices, buses, etc.

[0128] The processor 40 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0129] The memory 41 can be an internal storage unit of the charging pile 4, such as a hard disk or a memory of the charging pile 4. The memory 41 can also be an external storage device of the charging pile 4, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Further, the memory 41 can include both the internal storage unit and the external storage device of the charging pile 4. The memory 41 is used to store the computer program and other programs and data required by the charging pile 4. The memory 41 can also be used to temporarily store data that has been output or will be output.

[0130] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be realized in the form of hardware or software. In addition, the specific names of each functional unit and module are only for easy distinction, and do not limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0131] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can be referred to the related description of other embodiments.

[0132] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0133] In the embodiments provided in the present application, it should be understood that the disclosed device / charging stack and method can be implemented in other ways. For example, the above-described device / charging stack embodiments are only schematic, for example, the division of the modules or units is only a logical function division, and there can be another division in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0134] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0135] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0136] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, it can implement the steps of the above-mentioned various method embodiments. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media do not include electric carrier signals and telecommunication signals.

[0137] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A charging method, characterized in that: include: Obtain the target charging requirements of the vehicle; determining various power allocation combinations based on the target charging demand; Determine candidate relay combinations corresponding to respective power distribution combinations; If each candidate relay combination includes more than two candidate relays, the relay wear balance degree corresponding to each candidate relay combination is calculated respectively: the wear degree of each candidate relay in the candidate relay combination is calculated; based on the standard deviation, variance or range of the wear degree of each candidate relay, the relay wear balance degree of the candidate relay combination is determined; wherein the relay wear balance degree is used to represent the balance degree of the wear degree of each candidate relay in the candidate relay combination; Determine the candidate relay combination corresponding to the maximum value of the wear leveling degrees of each relay as the target relay combination; The vehicle is charged based on the target relay combination.

2. The charging method according to claim 1, wherein: Also includes: If each candidate relay combination includes only one candidate relay, calculating the wear degree of the candidate relay in each candidate relay combination; The candidate relay combination corresponding to the minimum value of the wear degrees of the candidate relays is determined as the target relay combination.

3. The charging method according to claim 1, wherein: The determining of each power allocation combination based on the target charging demand includes: Determining each power allocation combination corresponding to the target charging demand based on a preset demand-power correspondence relationship; The demand-power correspondence is a correspondence between charging demand and power allocation combination.

4. The charging method according to claim 1, wherein: Determining each candidate relay combination corresponding to each power distribution combination includes: Determine the available relays corresponding to the target charging gun; determining each of the candidate relays from the available relays based on the number of the candidate relays in the power distribution combination; Based on the respective candidate relays, the candidate relay combination is determined.

5. The charging method according to any one of claims 1 to 4, characterized in that: The charging of the vehicle based on the target relay combination includes: determining a target charging module based on the target relay combination; The vehicle is charged based on the target charging module.

6. A charging device, characterized in that: include: A target charging demand acquisition module is used to obtain the target charging demand of the vehicle; a power allocation combination determining module, configured to determine each power allocation combination based on the target charging demand; A candidate relay combination determination module is used to determine each candidate relay combination corresponding to each power distribution combination; a wear leveling degree calculation module, configured to calculate the relay wear level corresponding to each candidate relay combination if each candidate relay combination includes more than two candidate relays: calculate the wear level of each candidate relay in the candidate relay combination; determine the relay wear level of the candidate relay combination based on the standard deviation, variance, or range of the wear level of each candidate relay; wherein the relay wear level is used to represent the degree of balance of the wear levels of each candidate relay in the candidate relay combination; a target relay combination determining module, configured to determine the candidate relay combination corresponding to the maximum value among the wear leveling degrees of the relays as the target relay combination; A vehicle charging module is configured to charge the vehicle based on the target relay combination.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the charging method according to any one of claims 1 to 5 are implemented.

8. A charging stack comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the charging method according to any one of claims 1 to 5 are implemented.

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