Charging pile power distribution system, method and device

Abstract

The present application relates to a charging pile power distribution system, method and device, wherein the system includes a safety module at the first level, which is used to determine the maximum charging power of each charging pile to limit the charging power of each charging pile to prevent the charging pile from being overloaded; an execution module at the second level, which is used to increase the output power of the target charging pile under the limit of the maximum charging power, until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold; an operation module at the third level, which is used to give priority to meeting the charging power demand of the target user group under the limit of the maximum charging power. Through the cooperation of the modules at the above three levels, the present application can achieve the goal of giving priority to meeting the charging needs of the target user group as much as possible while giving priority to ensuring the safety of the charging power distribution system, or maximizing the power output of the system to ensure the user's charging experience.

Description

Technical Field

[0001] The present application relates to the technical field of power supply, and in particular to a charging pile power distribution system, method and device. Background Art

[0002] With the popularity of electric vehicles, the demand for charging piles is gradually increasing. How to manage the power modules in the charging pile system and ensure efficient and reliable charging power distribution has become an urgent problem to be solved.

[0003] In the related art, the traditional power distribution method usually adopts a fixed distribution strategy, that is, the required power is fixedly distributed to each power module according to a preset distribution plan, which leads to excessive use of some power modules and makes it difficult to ensure the safety of power distribution. Summary of the invention

[0004] Based on this, it is necessary to provide a charging pile power distribution system, method, computer equipment, computer-readable storage medium and computer program product to address the technical problem that the safety of the charging pile power distribution is not reliable enough.

[0005] In a first aspect, the present application provides a charging pile power distribution system, the system comprising:

[0006] The safety module at the first level is used to determine the maximum charging power of each charging pile, so as to limit the charging power of each charging pile and prevent the charging pile from being overloaded;

[0007] The execution module at the second level is used to increase the output power of the target charging pile under the limitation of the maximum charging power until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold;

[0008] The operation module at the third level is used to give priority to meeting the charging power demands of the target user groups under the limitation of the maximum charging power.

[0009] In one embodiment, the charging pile power distribution system includes a plurality of charging terminals, a power supply module for power supply, and a switch control unit for scheduling the power supply module, and the switch control unit includes a plurality of control subunits connected to each other;

[0010] The operation module is used to obtain the charging mode supported by the target charging terminal when the charging demand information of the target charging terminal is obtained, and determine the target power module used to power the target charging terminal according to the charging demand information and the charging mode;

[0011] The safety module obtains the current output value of each control subunit in the switch control unit and the preset current threshold value corresponding to the control subunit, and compares the corresponding output current value with the preset current threshold value respectively;

[0012] When each output current value is not greater than the corresponding preset current threshold, the charging is determined to be safe, and a start signal is sent to the execution module; when there is an output current value greater than the corresponding preset current threshold, the corresponding fault information is determined and output according to the preset output current value and fault analysis mapping relationship table;

[0013] The execution module is used to control the target power module to be connected to the target charging terminal after receiving the start signal.

[0014] In one embodiment, determining a target power module for supplying power to a target charging terminal according to charging demand information and a charging mode includes:

[0015] Determine the operation strategy corresponding to the charging mode according to the preset mapping relationship table between the charging mode and the operation strategy, and determine the charging power requirement of the target charging terminal according to the charging demand information;

[0016] Determine the target power module based on the operation strategy and charging power demand.

[0017] In one embodiment, determining the operation strategy corresponding to the charging mode according to a preset mapping relationship table between the charging mode and the operation strategy includes:

[0018] When the charging mode is supercharging, the operation strategy is determined to determine that all power modules are target power modules;

[0019] When the charging mode is fast charging, the operation strategy is determined to determine the target power module from the power modules in the idle state based on the charging power demand;

[0020] When the charging mode is equal charging, the operation strategy is determined to evenly divide the charging power demand according to the number of target charging terminals in an idle state, and determine the corresponding number of target power modules according to the evenly divided charging power demand.

[0021] In one embodiment, each charging terminal is pre-bound with a specific power module, and the operation strategy is determined based on the charging power demand, and the target power module is determined from the power modules in the idle state, including:

[0022] When the information that the power module corresponding to the target charging terminal is bound to other charging terminals is obtained, the operation strategy is determined to control the power module corresponding to the target charging terminal as the target power module, and according to the charging power demand, the target power module is selected in sequence from high to low according to the output power among the power modules in the idle state until the total output power of each target power module is not less than the charging power demand.

[0023] After controlling the target power module to be connected to the target charging terminal, the safety module is further used to:

[0024] Acquire the current output value of each control subunit in real time, and compare each output current value with the corresponding preset current threshold value;

[0025] In the case where the output current value is greater than the corresponding preset current threshold, the corresponding fault information is determined and output according to the output current value and fault analysis mapping relationship table.

[0026] In one embodiment, each control subunit is a relay, a common copper busbar and a supercharged copper busbar, and each preset current threshold is a relay overcurrent threshold, a common copper busbar overcurrent threshold and a supercharged copper busbar overcurrent threshold.

[0027] In a second aspect, the present application also provides a charging power distribution method, the method comprising:

[0028] Determine the maximum charging power of each charging pile to limit the charging power of each charging pile to prevent the charging pile from being overloaded;

[0029] Under the limitation of the maximum charging power, the output power of the target charging pile is increased until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold; and / or,

[0030] Under the limitation of maximum charging power, priority is given to meeting the charging power demands of the target user groups.

[0031] In one embodiment, the method further comprises:

[0032] When the charging requirement information of the target charging terminal is obtained, the charging mode supported by the target charging terminal is obtained, and according to the charging requirement information and the charging mode, a target power module for supplying power to the target charging terminal is determined;

[0033] Obtaining the current output value of each control subunit in the switch control unit and the preset current threshold value corresponding to the control subunit, and comparing the corresponding output current value with the preset current threshold value respectively;

[0034] When all output current values ​​are no greater than the corresponding preset current threshold, the target power supply module is controlled to be connected to the target charging terminal. When there is an output current value greater than the corresponding preset current threshold, the corresponding fault information is determined and output according to the preset output current value and fault analysis mapping relationship table.

[0035] In a third aspect, the present application further provides a computer device, the computer device comprising a memory and a processor, the memory storing a computer program, and the processor implementing the following steps when executing the computer program:

[0036] Determine the maximum charging power of each charging pile to limit the charging power of each charging pile to prevent the charging pile from being overloaded;

[0037] Under the limitation of the maximum charging power, the output power of the target charging pile is increased until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold; and / or,

[0038] Under the limitation of maximum charging power, priority is given to meeting the charging power demands of the target user groups.

[0039] In a fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0040] Determine the maximum charging power of each charging pile to limit the charging power of each charging pile to prevent the charging pile from being overloaded;

[0041] Under the limitation of the maximum charging power, the output power of the target charging pile is increased until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold; and / or,

[0042] Under the limitation of maximum charging power, priority is given to meeting the charging power demands of the target user groups.

[0043] In a fifth aspect, the present application further provides a computer program product, the computer program product comprising a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0044] Determine the maximum charging power of each charging pile to limit the charging power of each charging pile to prevent the charging pile from being overloaded;

[0045] Under the limitation of the maximum charging power, the output power of the target charging pile is increased until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold; and / or,

[0046] Under the limitation of maximum charging power, priority is given to meeting the charging power demands of the target user groups.

[0047] The above-mentioned charging pile power distribution system limits the charging power of each charging pile through the cooperation of the security module located at the first level, the execution module located at the second level and the operation module located at the third level to prevent the charging pile from being overloaded, and then starts the execution module at the second level and / or the operation module at the third level while ensuring that each charging pile is in a safe state, thereby achieving the goal of giving priority to meeting the charging needs of the target user group as much as possible while giving priority to ensuring the safety of the charging power distribution system, or maximizing the power output of the system to ensure the user's charging experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is an application environment diagram of a charging pile power distribution system in one embodiment;

[0049] Figure 2 It is a structural block diagram of a charging pile power distribution system in one embodiment;

[0050] Figure 3 A flowchart for determining a target power module in one embodiment;

[0051] Figure 4 A flowchart of determining a target power module according to a charging mode in one embodiment;

[0052] Figure 5 is a flow chart of determining whether there is a fault according to the current output value of each control subunit in one embodiment;

[0053] Figure 6 is a flow chart of a charging power allocation method in one embodiment;

[0054] Figure 7 A flowchart of a charging power allocation method in another embodiment;

[0055] Figure 8 is an internal structure diagram of a computer device in one embodiment;

[0056] Fig. 9 FIG. 4 is a diagram showing the internal structure of a computer device in another embodiment. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0058] The charging pile power distribution system provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be integrated on the server 104, or it can be placed on the cloud or other network servers. Among them, the terminal 102 is connected to each charging pile 106 in the charging station (charging pile system) and the power module 108 for power supply by wired or wireless means. The terminal 102 is used to obtain the charging power demand value and other data of the charging gun (charging terminal) on the charging pile 106 in real time, and upload these data to the server 104 synchronously. The charging pile 106 and the power module 108 can also be directly connected to the server 104 by wired or wireless means to upload their own operating data directly to the server 104. The server 104 can be implemented by an independent server or a server cluster composed of multiple servers. The terminal 102 can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things device can be a smart TV, etc., and the portable wearable device can be a smart watch, a smart bracelet, etc.

[0059] In one embodiment, Figure 2 As shown, this method is applied to Figure 1 Take the terminal in as an example to illustrate, the terminal belongs to the charging pile power distribution system, the charging pile power distribution system includes multiple charging terminals, a power supply module for power supply and a switch control unit for scheduling the power supply module, the switch control unit includes multiple control sub-units connected to each other, and the switch control unit is used to cooperate with the power supply module to form a power switching unit to realize intelligent power distribution. It can be understood that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. The various modules in the charging pile power distribution system can be fully or partially implemented by software, hardware and a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0060] In this embodiment, the charging pile power distribution system includes: a security module 210 at the first level, an execution module 220 at the second level, and an operation module 230 at the third level. These three modules can be integrated in the charging pile or set on a computer device that communicates data with each charging pile. The security module is used to determine the maximum charging power of each charging pile to limit the charging power of each charging pile to prevent the charging pile from being overloaded; the execution module is used to increase the output power of the target charging pile under the limit of the maximum charging power until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is not greater than the preset difference threshold; the operation module is used to give priority to meeting the charging power demand of the target user group under the limit of the maximum charging power.

[0061] The first level must be met to ensure the safety of the system, the second level can try to meet its needs to ensure the profitability of the charging pile power distribution system, and the third level is a collection of multiple operation plans, but only one plan can be run at the same time to improve product competitiveness through reasonable operation plans. That is to say, when the second and third levels are executed, the realization of the first level must be guaranteed first. When executing the third level, the needs of the second level must be met as much as possible before meeting the needs of the third level.

[0062] The charging pile power distribution system in this embodiment limits the charging power of each charging pile through the cooperation of a security module at the first level, an execution module at the second level, and an operation module at the third level to prevent the charging pile from being overloaded, and then starts the execution module at the second level and / or the operation module at the third level while ensuring that each charging pile is in a safe state, thereby achieving the goal of giving priority to meeting the charging needs of the target user group as much as possible while giving priority to ensuring the safety of the charging power distribution system, or maximizing the power output of the system to ensure the user's charging experience.

[0063] In one embodiment, a charging pile power distribution system includes a plurality of charging terminals, a power supply module for supplying power, and a switch control unit for scheduling the power supply module, and the switch control unit includes a plurality of control subunits connected to each other.

[0064] The operation module is used to obtain the charging mode supported by the target charging terminal when the charging demand information of the target charging terminal is obtained, and determine the target power module used to power the target charging terminal according to the charging demand information and the charging mode.

[0065] Among them, the charging pile power distribution system belongs to a charging station in a shopping mall or community. The charging pile power distribution system includes multiple charging guns. The charging mode of each charging gun can be a unified equalizing mode, or a mixed mode including supercharging and / or fast charging. Each charging mode corresponds to a specific charging method. For example, the supercharging mode may require multiple power modules to work simultaneously to provide high power output, while the fast charging mode selects some power modules to work according to the idle power modules. The equalizing mode divides the required power according to the number of charging terminals. The target charging terminal is the charging pile that shakes hands with the vehicle to be charged in the charging pile power distribution system. When the target charging terminal is connected to the vehicle to be charged, the charging demand information of the target charging terminal can be obtained. The charging demand information includes the charging power demand information of the target charging terminal and the supported charging mode information.

[0066] Exemplarily, after the vehicle to be charged is connected to the target charging terminal, the charging power demand of the target charging terminal is determined according to the charging interaction message between the target charging terminal and the vehicle to be charged, and then the required number of power modules is determined according to the charging power demand and the charging power of each power module. For example, assuming that the rated power of each power module in the charging pile power distribution system is 40KW, the required number of power modules is: required number of power modules = maximum required power / 40KW. After determining the required number of power modules, the system checks the idle status of the current power modules and selects a sufficient number of idle power modules as target power modules.

[0067] The safety module obtains the current output value of each control subunit in the switch control unit and the preset current threshold corresponding to the control subunit, and compares the corresponding output current value with the preset current threshold respectively; when each output current value is not greater than the corresponding preset current threshold, the charging safety is determined, and a start signal is sent to the execution module; when there is an output current value greater than the corresponding preset current threshold, the corresponding fault information is determined and output according to the preset output current value and fault analysis mapping relationship table.

[0068] Among them, the control subunit is a subunit in the power switching unit for controlling the on-off between the power module and the charging terminal. The switch control unit in this embodiment takes each control subunit as a relay, an ordinary copper busbar and an overcharge copper busbar as an example, and the corresponding preset current thresholds are relay overcurrent threshold, ordinary copper busbar overcurrent threshold and overcharge copper busbar overcurrent threshold. The preset output current value and fault analysis mapping relationship table are determined according to a large number of tests. When the ordinary copper busbar is overcurrent, it may be due to local overheating and overcurrent caused by damage to the copper busbar, poor contact or aging wear, or it may be due to the failure of the current distribution algorithm inside the system to correctly calculate or distribute the current; when the overcharge copper busbar is overcurrent, it may be due to local overheating and overcurrent caused by damage to the overcharge copper busbar, poor contact or aging wear, or it may be due to the failure of the current distribution algorithm inside the system to correctly calculate or distribute the current; when the relay is overcurrent, it may be due to abnormal current caused by adhesion of the relay contacts, failure or aging of the relay coil, or it may be due to the failure of the current distribution algorithm inside the system to correctly calculate or distribute the current.

[0069] Specifically, the charging pile power distribution system also includes a distribution unit. The distribution unit in this embodiment takes SCU (switch control board) as an example. Several switch control boards and copper bars connecting the charging terminal and the power module are staggered to form a power switching matrix, and the power switching matrix also includes horizontal lines and longitudinal lines. The relay is arranged on the switch control board, and the relay is used to switch the corresponding power module to the target charging terminal according to the charging demand. A short contact point is also provided on the switch control board, and the short contact point is used to connect the power module to the corresponding pre-allocated charging terminal. The relay is also located on the horizontal line, so the relay overcurrent is the same as the horizontal line overcurrent, and the minimum value of the rated current of the two is taken as the relay overcurrent threshold. There are two types of longitudinal line overcurrent, one is the overcurrent of the supercharging copper bar, and the other is the overcurrent of the ordinary copper bar. The overcurrent of the ordinary copper bar, the overcurrent of the supercharging copper bar and the overcurrent of the relay can all be measured by the current sensor.

[0070] Exemplarily, in this embodiment, the charging pile power distribution system includes 12 power modules, and the rated power of each power module is the same, all 40KW. For example, the maximum current that can pass through each SCU board is 125A, and the maximum current of each relay is 125A; all copper bars are divided into supercharging copper bars and fast charging copper bars, the maximum current of fast charging copper bars is 350A, and the maximum current of supercharging copper bars is 750A. Therefore, the relay overcurrent threshold in this embodiment is 125A, the ordinary copper bar overcurrent threshold is 350A, and the supercharging copper bar overcurrent threshold is 750A. When the current output values ​​corresponding to the relays, ordinary copper bars, and supercharging copper bars in the charging pile power distribution system are not greater than the corresponding preset current thresholds, it indicates that the charging pile power distribution system is in a safe operating state. At this time, the operation strategy corresponding to the target charging terminal can be executed. In other words, these parameter designs can ensure the safety and efficiency of the system during power distribution and charging.

[0071] When the current output values ​​corresponding to the relay, ordinary copper busbar and super-charging copper busbar are all greater than the corresponding preset current thresholds, the output power module fails or the control algorithm has an erroneous fault information, so that the staff can check the status information of the power module or correct the control algorithm through the self-repair system preset inside the system.

[0072] The execution module is used to control the target power module to be connected to the target charging terminal after receiving the start signal.

[0073] In one embodiment, referring to Figure 3 The operation module determines a target power module for supplying power to a target charging terminal according to the charging demand information and the charging mode, including the following steps:

[0074] Step 302: Determine the operation strategy corresponding to the charging mode according to the preset mapping relationship table between the charging mode and the operation strategy, and determine the charging power requirement of the target charging terminal according to the charging demand information.

[0075] Among them, the mapping relationship table between the preset charging mode and the operation strategy is set in advance according to the operation requirements of the charging pile power distribution system. The operation strategy is a specific execution plan for the charging pile power distribution system, which involves the designation of the power module by the charging pile, that is, a specific power module is required to power it, and the specific power module is the target power module. Different charging modes correspond to different operation strategies, all of which are used to ensure the charging efficiency of the charging pile.

[0076] Exemplarily, when the acquired charging mode is the equalizing charging mode, the operation strategy corresponding to the equalizing charging mode is searched and determined in the preset mapping relationship table between charging modes and operation strategies.

[0077] Step 304: determine the target power module according to the operation strategy and the charging power requirement.

[0078] For example, the above-mentioned charging pile power distribution system includes 12 power modules, and the rated power of each power module is the same, which is 40KW. If the charging mode is the equalization charging mode, then according to the calculation formula: the required number of power units = maximum required power / 40KW, determine the corresponding number of idle power modules as the target power modules to meet the charging needs of the target charging pile.

[0079] In this embodiment, a target power module for supplying power to a target charging terminal is determined according to the charging demand information and the charging mode, which helps to meet the specific charging demand of the charging vehicle connected to the target charging terminal.

[0080] In one embodiment, Figure 4 As shown, the operation module determines the operation strategy corresponding to the charging mode according to the preset mapping relationship table between the charging mode and the operation strategy, including:

[0081] Step 402, when the charging mode is supercharging, determining the operation strategy is to determine that all power modules are target power modules.

[0082] Among them, according to the above content, the charging modes of the charging terminal include supercharging, fast charging and equal charging. The supercharging gun is suitable for vehicles with high charging power requirements that require fast charging, while ordinary fast charging guns can achieve fast charging and equal charging, thereby meeting the needs of vehicles with lower charging power requirements.

[0083] Exemplarily, when the charging mode of the target charging terminal is acquired as the supercharging mode, all power modules are determined as target power modules, and the target power modules are controlled to be connected to the corresponding target charging terminal (supercharging gun). In this mode, all power modules are concentrated on the supercharging gun to achieve the highest power output to meet the high-power demand vehicles that need fast charging, with a maximum output of up to 480KW. When the supercharging mode is started, other charging guns stop working, even the guns that are being charged will stop, thereby ensuring the highest priority and charging efficiency of the supercharging gun. In this way, by concentrating resources to power the supercharging gun, the system can complete high-power charging tasks in a short time, improving charging efficiency and user experience.

[0084] Step 404, when the charging mode is fast charging, determine the operation strategy based on the charging power demand, and determine the target power module from the power modules in the idle state.

[0085] The power module in the idle state is a power module that is not currently occupied, that is, a power module in the dormant state.

[0086] Exemplarily, when the charging mode of the target charging terminal is obtained as the fast charging mode, the idle power module is determined as the target power module, and the target power module is controlled to connect to the corresponding target charging terminal. In the fast charging mode, the system dynamically allocates resources according to the idle power modules to quickly respond to the charging needs of different vehicles and provide moderate power output. In this way, by using the idle power modules for fast charging, the system can efficiently utilize existing resources, reduce waiting time, and improve charging efficiency.

[0087] Step 406, when the charging mode is equal charging, determine the operation strategy to evenly divide the charging power demand according to the number of target charging terminals in idle state, and determine the corresponding number of target power modules according to the evenly divided charging power demand.

[0088] Exemplarily, when the charging mode of the target charging terminal is obtained as the equalization charging mode, the required number of target power modules is determined according to the charging power demand and the rated output power of each power module, and then a corresponding number of power modules are arbitrarily selected from the idle power modules as the target power modules.

[0089] In this embodiment, the corresponding operating strategy is determined according to the charging mode of the target charging terminal to better meet the charging needs of the vehicle to be charged, and when the current output values ​​corresponding to the relay, ordinary copper busbar and supercharging copper busbar are not greater than the corresponding preset current threshold, the corresponding operating strategy is executed, which helps to ensure the safety of the charging pile power distribution system during operation.

[0090] In one embodiment, each charging terminal is pre-bound with a specific power module, and an operation strategy is determined to be based on the charging power demand, and a target power module is determined from the power modules in an idle state, including: when information is obtained that the power module corresponding to the target charging terminal is bound to other charging terminals, the operation strategy is determined to control the power module corresponding to the target charging terminal as the target power module, and according to the charging power demand, the target power modules are selected in sequence from high to low according to the output power from the power modules in the idle state until the total output power of each target power module is not less than the charging power demand.

[0091] In the initial state, each power module corresponds to a specific charging terminal to ensure that each charging terminal has at least one dedicated power module to supply power to it, thereby ensuring that each charging terminal can stably obtain the required power during the charging process; in addition, since different charging terminals may have different current requirements, by reserving a power module for each charging terminal, the current requirements of each charging terminal can be more accurately managed and adjusted to avoid insufficient power supply or waste of power due to resource competition. Of course, the power modules can also work together to supply power to the same charging terminal.

[0092] When binding the charging terminal with a predetermined power module, the binding is mainly performed through an identification number. For example, the identification of the charging gun can be the charging gun number or the charging gun name, etc., to ensure the uniqueness of the charging gun identity. The identification of the charging gun in this embodiment takes the charging gun number as an example, for example, G00, G01, etc., G represents the charging gun, and the Arabic numerals after G represent the specific serial number of the charging gun; the identification of the power module can be the power module number or the power module name, to ensure the uniqueness of the power module identity, the identification of the power module in this embodiment takes the power module number as an example, for example, M00, M01, etc., M represents the power module, and the Arabic numerals after M represent the specific serial number of the power module. In this embodiment, taking the corresponding binding of the charging gun number and the power module number as an example, M01 is bound to G01, and M02 is bound to G02.

[0093] Exemplarily, in this embodiment, the fast charging mode includes the following three operating conditions: each charging gun (including supercharging gun) can obtain at least one available module when a car is charging. If the module bound to this charging gun is switched to other charging guns, the module needs to be switched back to this charging gun when the gun is plugged in, thereby ensuring that each charging terminal obtains at least one available power module to meet basic charging needs and avoid the situation where no power module is available.

[0094] If there are idle power modules in the switching matrix, they will be switched to the supercharging gun first; if there are no supercharging guns, they will be switched to the charging guns with the highest power consumption utilization. For example, if the charging power demand gap of charging gun No. 2 is 35KW, and the charging power demand gap of charging gun No. 3 is 20KW, then the idle power module will be switched to charging gun No. 2 first, so as to ensure efficient allocation of resources and meet the maximum power demand.

[0095] If the power consumption utilization rates of each charging gun are equal, the idle power module will be switched to the charging gun that starts charging first, thereby ensuring the fairness of resource allocation and improving the overall efficiency of the system; and giving priority to the needs of users who start charging first, which helps reduce user waiting time and thus improves user satisfaction and charging experience.

[0096] In addition, in this embodiment, when the charging gun is fully equipped, each power module will be pre-assigned to a gun for binding. At any time, as long as the designated charging gun has a demand, the power module dedicated to this gun needs to be immediately switched back to this charging gun for use.

[0097] In this embodiment, the specific working conditions in the fast charging mode are further subdivided, which helps to meet the charging needs of different charging terminals while ensuring the charging efficiency, thereby ensuring the reliability of the charging pile power distribution system when in use.

[0098] like Figure 5 As shown, after controlling the target power module to be connected to the target charging terminal, the security module is further used to perform the following steps:

[0099] Step 502 , obtaining the current output value of each control subunit in real time, and comparing each output current value with the corresponding preset current threshold value.

[0100] Among them, according to the above content, each control subunit is a relay, an ordinary copper busbar and a supercharging copper busbar, and the corresponding preset current thresholds are the relay overcurrent threshold, the ordinary copper busbar overcurrent threshold and the supercharging copper busbar overcurrent threshold.

[0101] Step 504: when the output current value is greater than the corresponding preset current threshold, the corresponding fault information is determined and output according to the output current value and fault analysis mapping relationship table.

[0102] Specifically, after controlling the target power module to be connected to the target charging terminal, the current output values ​​of the relay, ordinary copper bus and supercharging copper bus are compared with the corresponding preset current thresholds in real time. When one or several current output values ​​are greater than the corresponding preset current thresholds, the corresponding fault information is output so that the staff or the system can repair it in time, thereby ensuring the safety and reliability of the system during operation.

[0103] In this embodiment, in addition to the above-mentioned step of determining the operation safety of the charging pile power distribution system before controlling the target power module to be connected to the target charging terminal after determining the target power module, it is also necessary to monitor the operation safety of the charging pile power distribution system in real time after the target power module is connected to the target charging terminal, so as to ensure the safety and reliability of the charging pile power distribution system during operation before and after the execution of the corresponding operating strategy.

[0104] The above-mentioned charging pile power distribution system, through the cooperation of the security module located at the first level, the execution module located at the second level and the operation module located at the third level, realizes the limitation of the charging power of each charging pile to prevent the charging pile from being overloaded, and then starts the execution module of the second level and / or the operation module of the third level while ensuring that each charging pile is in a safe state, thereby achieving the goal of giving priority to meeting the charging needs of the target user group as much as possible while giving priority to ensuring the safety of the charging power distribution system, or maximizing the power output of the system to ensure the user's charging experience.

[0105] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0106] Based on the same inventive concept, an embodiment of the present application also provides a charging power distribution method, which is applicable to the above-mentioned charging pile power distribution system.

[0107] In one embodiment, Figure 6 As shown, a charging power distribution method is provided, comprising the following steps:

[0108] Step 602, determining the maximum charging power of each charging pile to limit the charging power of each charging pile to prevent the charging pile from being overloaded.

[0109] Step 604: Under the limitation of the maximum charging power, increase the output power of the target charging pile until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold; and / or,

[0110] Step 606: Under the limitation of the maximum charging power, the charging power demand of the target user group is met first.

[0111] Among them, the maximum charging power is also the safe power, that is, within the maximum charging power, as long as the charging power of the charging pile is not greater than its corresponding maximum charging power, the operation state of the charging pile is safe. The preset difference threshold is obtained through multiple tests based on the characteristics of the charging pile power distribution system. The target user group is VIP users and other users with high priority.

[0112] In the above-mentioned charging pile power distribution method, when the charging demand information of the target charging terminal is obtained, the charging mode supported by the target charging terminal and the target power module used for power supply are first determined, and then the current output value of each control subunit in the current switch control unit is detected whether it is not greater than the corresponding preset current threshold. When the current output value of each control subunit is not greater than the corresponding preset current threshold, the target power module is controlled to be connected with the target charging terminal to ensure the safety during charging; and when the current output value of a control subunit is greater than the corresponding preset current threshold, it indicates that there is a charging safety problem in the charging pile power distribution system at this time, and the corresponding fault information needs to be output so that the system or staff can check and maintain it in time, so as to ensure the safety and reliability of subsequent charging using the target charging terminal, that is, it helps to ensure the safety and reliability of the charging pile power distribution system when distributing power.

[0113] In another embodiment, Figure 7 As shown, the method also includes:

[0114] Step 702, when the charging requirement information of the target charging terminal is obtained, the charging mode supported by the target charging terminal is obtained, and according to the charging requirement information and the charging mode, a target power module for supplying power to the target charging terminal is determined.

[0115] Step 704 , obtaining the current output value of each control subunit in the switch control unit and the preset current threshold value corresponding to the control subunit, and comparing the corresponding output current value with the preset current threshold value respectively.

[0116] Step 706, when all output current values ​​are not greater than the corresponding preset current threshold, control the target power module to be connected to the target charging terminal. When there is an output current value greater than the corresponding preset current threshold, determine the corresponding fault information and output it according to the preset output current value and fault analysis mapping relationship table.

[0117] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 8As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the charging mode, operating status, charging history record of each charging pile in the charging pile power distribution system, and the output power, operating status and other operational information of the power module. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a charging pile power distribution method is implemented.

[0118] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Fig. 9 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a charging pile power distribution method is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse.

[0119] Those skilled in the art will understand that Figure 8 and Fig. 9 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0120] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0121] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0122] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0123] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0124] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0125] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0126] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A charging pile power distribution system, characterized in that: include: The safety module at the first level is used to determine the maximum charging power of each charging pile, so as to limit the charging power of each charging pile to prevent the charging pile from being overloaded; An execution module at the second level, used for increasing the output power of the target charging pile under the limitation of the maximum charging power, until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold; The operation module at the third level is used to give priority to meeting the charging power demand of the target user group under the limitation of the maximum charging power.

2. The charging pile power distribution system according to claim 1, characterized in that: The charging pile power distribution system includes a plurality of charging terminals, a power supply module for power supply, and a switch control unit for scheduling the power supply module, wherein the switch control unit includes a plurality of control subunits connected to each other; The operation module is used to obtain the charging mode supported by the target charging terminal when the charging demand information of the target charging terminal is obtained, and determine the target power supply module for supplying power to the target charging terminal according to the charging demand information and the charging mode; The safety module obtains the current output value of each control subunit in the switch control unit and the preset current threshold value corresponding to the control subunit, and compares the corresponding output current value with the preset current threshold value respectively; In the case where each of the output current values ​​is not greater than the corresponding preset current threshold, determining that charging is safe, and sending a start signal to the execution module; in the case where there is an output current value greater than the corresponding preset current threshold, determining and outputting corresponding fault information according to a preset output current value and fault analysis mapping relationship table; The execution module is used to control the target power module to be connected to the target charging terminal after receiving the start signal.

3. The charging pile power distribution system according to claim 2, characterized in that: The step of determining a target power module for supplying power to the target charging terminal according to the charging requirement information and the charging mode includes: Determine the operation strategy corresponding to the charging mode according to the preset mapping relationship table between the charging mode and the operation strategy, and determine the charging power requirement of the target charging terminal according to the charging demand information; The target power module is determined according to the operation strategy and the charging power requirement.

4. The charging pile power distribution system according to claim 3, characterized in that: The determining the operation strategy corresponding to the charging mode according to the preset mapping relationship table between the charging mode and the operation strategy includes: When the charging mode is supercharging, determining the operation strategy is to determine that all power modules are the target power modules; When the charging mode is fast charging, determining the operation strategy is to determine the target power module from power modules in an idle state based on the charging power demand; When the charging mode is equal charging, the operating strategy is determined to equally divide the charging power demand according to the number of target charging terminals in an idle state, and determine the corresponding number of target power modules according to the equally divided charging power demand.

5. The charging pile power distribution system according to claim 4, characterized in that: Each of the charging terminals is pre-bound with a specific power module, and the operation strategy is determined based on the charging power demand, and the target power module is determined from the power modules in an idle state, including: When the information that the power module corresponding to the target charging terminal is bound to other charging terminals is obtained, the operation strategy is determined to control the power module corresponding to the target charging terminal to be the target power module, and according to the charging power requirement, the target power modules are selected in sequence from high to low according to the output power among the power modules in the idle state until the total output power of each target power module is not less than the charging power requirement.

6. The charging pile power distribution system according to claim 2, characterized in that: After controlling the target power module to be connected to the target charging terminal, the security module is further used to: Acquire the current output value of each control subunit in real time, and compare each output current value with the corresponding preset current threshold value respectively; In the case that the output current value is greater than the corresponding preset current threshold, the corresponding fault information is determined and output according to the output current value and fault analysis mapping relationship table.

7. The charging pile power distribution system according to claim 2, characterized in that: Each of the control subunits is a relay, an ordinary copper busbar and an overcharge copper busbar, and each of the preset current thresholds is a relay overcurrent threshold, an ordinary copper busbar overcurrent threshold and an overcharge copper busbar overcurrent threshold.

8. A charging power distribution method, characterized in that: include: Determine the maximum charging power of each charging pile to limit the charging power of each charging pile to prevent the charging pile from being overloaded; Under the limitation of the maximum charging power, the output power of the target charging pile is increased until the absolute value of the difference between the output power of the target charging pile and the maximum charging power is no greater than a preset difference threshold; and / or, Under the limitation of the maximum charging power, the charging power demand of the target user group is met first.

9. The method according to claim 8, characterized in that Also includes: When the charging requirement information of the target charging terminal is obtained, the charging mode supported by the target charging terminal is obtained, and according to the charging requirement information and the charging mode, a target power module for supplying power to the target charging terminal is determined; Acquire the current output value of each of the control subunits in the switch control unit and the preset current threshold value corresponding to the control subunit, and compare the corresponding output current value with the preset current threshold value respectively; When each of the output current values ​​is not greater than the corresponding preset current threshold, the target power supply module is controlled to be connected to the target charging terminal. When there is a case where the output current value is greater than the corresponding preset current threshold, the corresponding fault information is determined and output according to the preset output current value and fault analysis mapping relationship table.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 8 to 9 are implemented.

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