A charging pile energy storage intelligent control method based on multiple energy conversion

Abstract

The present invention relates to the technical field of charging pile energy storage, and specifically discloses an intelligent control method for charging pile energy storage based on multiple energy conversions, the method comprising acquiring charging pile charging information, analyzing charging pile charging speed, analyzing parking lot power supply modes, controlling parking lot power supply, analyzing parking lot charging status, judging parking lot charging status, and analyzing and controlling battery power storage. By analyzing the power supply and storage conditions corresponding to the charging parking lot, the problem of limitations in the power supply control of the charging parking lot and the power storage control analysis of the battery in the current technology is solved, the intelligent and automated power supply and storage of the charging parking lot is realized, the charging effect of the charging parking lot and the utilization rate of solar energy are effectively guaranteed, while the waste of resources in the charging parking lot is reduced, the stability of the operation of the charging parking lot is guaranteed, and the impact of the subsequent charging peak period on the power grid is alleviated.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging pile energy storage, and relates to an intelligent control method for charging pile energy storage based on multiple energy conversions. Background Art

[0002] With the continuous development of urban traffic roads, environmentally friendly and convenient electric vehicles have gradually become an important means of transportation for people. In order to ensure the charging safety of electric vehicles, more and more people have begun to charge them in charging parking lots. In order to reduce electricity costs, charging parking lots have begun to use solar energy for power generation. At the same time, in order to ensure the full utilization of electricity in charging parking lots, it is necessary to analyze and control the power of the batteries in the energy storage devices in the charging piles of charging parking lots.

[0003] Current technology mainly focuses on analyzing and controlling the charging status of charging piles, while the analysis of power supply control of charging parking lots and battery storage control of energy storage devices is still relatively limited. Obviously, this analysis method has the following problems: 1. The charging speed of electric vehicles determines the power supply of batteries. Currently, the power supply of charging piles is not analyzed according to the charging speed of electric vehicles, and thus the reliability of the analysis results of the actual charging amount of electric vehicles cannot be effectively guaranteed, thereby improving the accuracy of the subsequent charging pile power supply mode analysis results and the accuracy of power supply control, and it is also impossible to save energy and costs in charging parking lots.

[0004] 2. The usage of charging piles affects the battery's power storage. Current technology does not analyze the usage of charging piles and the charging amount of electric vehicles. It cannot accurately display the charging status of the charging parking lot, and thus cannot accurately judge the battery's power storage status. It also cannot reflect the flexibility of battery power storage, and thus cannot guarantee the stability of the power supply of charging piles in subsequent charging parking lots. It also cannot reasonably analyze the battery's power storage source and the corresponding power storage speed of each power storage source, thereby reducing the charging efficiency and effect of the charging piles in the charging parking lot, and cannot improve the utilization rate of solar energy in the charging parking lot. Summary of the invention

[0005] The purpose of the present invention is to provide a charging pile energy storage intelligent control method based on multiple energy conversion, which solves the problems existing in the background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions: a charging pile energy storage intelligent control method based on multiple energy conversion, the method comprising the following steps: step 1, charging pile charging information acquisition: obtain the charging information of each electric vehicle in a designated charging parking lot within a specified time period from a charging order management center.

[0007] Step 2: Charging speed analysis of charging piles: Analyze the charging speed of the corresponding charging piles of each electric vehicle in a designated charging parking lot within a specified time period.

[0008] Step 3: Parking lot power supply mode analysis: Analyze the power supply mode corresponding to the designated charging parking lot within the specified time period, where the power supply mode includes off-grid mode and grid-connected mode.

[0009] Step 4: Parking lot power supply control: Based on the power supply mode corresponding to the designated charging parking lot within the designated time period, the power supply control information of the power supply mode corresponding to the designated charging parking lot within the designated time period is analyzed, and then the power supply of the battery is controlled.

[0010] Step 5: Parking lot charging status analysis: Based on the charging information of each electric vehicle in the designated charging parking lot within the designated time period, analyze the charging status compliance index corresponding to the designated charging parking lot within the designated time period.

[0011] Step 6: Determine the charging status of the parking lot: Determine the charging status of the designated charging parking lot within the specified time period based on the charging status compliance index of the designated charging parking lot within the specified time period. If the charging status of the designated charging parking lot within the specified time period is in a low charging state, execute step 7.

[0012] Step 7: Battery power analysis and control: Analyze the power storage information of the batteries in the designated charging parking lot within the designated time period, and then control the power storage of the batteries.

[0013] Optionally, the charging information of each electric vehicle includes a charging pile number, a charging start time and a preset charging duration.

[0014] Optionally, the analysis of the charging speed of the charging pile corresponding to each electric vehicle in the designated charging parking lot within the specified time period is performed as follows: obtaining the charging voltage and charging current corresponding to each electric vehicle in the designated charging parking lot within the specified time period, and then obtaining the charging power corresponding to each electric vehicle in the designated charging parking lot within the specified time period, and comparing the charging power corresponding to each electric vehicle in the designated charging parking lot within the specified time period with the standard charging speed corresponding to each charging power stored in the charging pile database, to obtain the standard charging speed corresponding to each electric vehicle in the designated charging parking lot within the specified time period, and using it as the charging speed of the charging pile corresponding to each electric vehicle in the designated charging parking lot within the specified time period.

[0015] Optionally, the power supply mode corresponding to the designated charging parking lot within the designated time period is analyzed, and the specific analysis process is as follows: the power supply adjustment time corresponding to the designated time period is obtained according to the charging start time and preset charging duration of each electric vehicle in the charging parking lot within the designated time period.

[0016] The power generation speed corresponding to the solar panels of the specified charging parking lot in the specified time period is obtained. At the same time, according to the charging speed of the charging pile corresponding to each electric vehicle, the preset charging time and the power supply adjustment time, the total charging speed of the charging pile corresponding to each power supply adjustment time is obtained. At the same time, the maximum power supply speed corresponding to the battery is obtained from the battery management center.

[0017] According to the charging speed of the charging pile corresponding to each electric vehicle, the preset charging time and each power supply adjustment time, the total charging speed of the charging pile corresponding to each power supply adjustment time is obtained.

[0018] The power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period, the maximum power supply speed corresponding to the battery, and the total charging speed of the charging piles corresponding to each power supply adjustment time are compared.

[0019] If the total charging speed of the charging piles corresponding to a certain power supply adjustment time in the specified time period is greater than or equal to the sum of the power generation speed of the solar panels in the specified charging parking lot and the maximum power supply speed corresponding to the battery, then the power supply mode corresponding to the designated parking lot at the power supply adjustment time in the specified time period is determined to be the grid-connected mode; otherwise, the power supply mode corresponding to the designated parking lot at the power supply adjustment time in the specified time period is determined to be the off-grid mode, thereby obtaining the power supply modes corresponding to the designated parking lots at each power supply adjustment time in the specified time period.

[0020] Optionally, the power supply control information of the power supply mode corresponding to the designated charging parking lot within the specified time period is analyzed, and the specific analysis steps are as follows: S41. If the power supply mode corresponding to the designated charging parking lot at a certain power supply adjustment time within the specified time period is an off-grid mode, then the power generation speed corresponding to the solar panel of the designated charging parking lot in the specified time period and the total charging speed of the charging piles corresponding to each power supply adjustment time are compared.

[0021] S42. If the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is greater than or equal to the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the power supply source corresponding to the designated charging parking lot for the power supply adjustment in the designated time period is solar energy, and the power supply speed of the solar energy at the power supply adjustment time in the designated time period is the total charging speed of the charging piles corresponding to the power supply adjustment time in the designated time period.

[0022] S43. If the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is less than the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the power supply source corresponding to the designated charging parking lot at the power supply adjustment time in the designated time period is solar energy and batteries, the power supply speed of the solar energy at the power supply adjustment time in the designated time period is the power generation speed corresponding to the solar panels, and the power supply speed of the batteries corresponding to the power supply adjustment time in the designated time period is the difference between the total charging speed of the charging piles corresponding to the power supply adjustment time and the power generation speed of the solar panels.

[0023] S44. If the power supply mode corresponding to the designated charging parking lot at a certain power supply adjustment time in the specified time period is the grid-connected mode, then the power supply sources corresponding to the designated charging parking lot at the power supply adjustment time in the specified time period are solar energy, batteries and power grid, wherein the power supply speed of the solar energy at the power supply adjustment time in the specified time period is the power generation speed corresponding to the solar cell panel, the power supply speed of the battery at the power supply adjustment time in the specified time period is the maximum power supply speed corresponding to the battery, and the power supply speed of the power grid corresponding to the power supply adjustment time in the specified time period is the difference between the total charging speed of the charging pile corresponding to the power supply adjustment time and the power generation speed of the solar cell panel and the maximum power supply speed of the battery.

[0024] S45. According to the analysis method of steps S41 to S44, the power supply control information of the power supply mode corresponding to the designated charging parking lot within the designated time period is analyzed, wherein the power supply control information includes each power supply source corresponding to each power supply adjustment time and the power supply speed of each power supply source.

[0025] Optionally, the charging status conformity index corresponding to the designated charging parking lot within the designated time period is analyzed, and the specific analysis process is as follows: the designated time period is compared with the time period corresponding to the set charging valley state, and the overlapping time length corresponding to the designated time period and the charging valley state time period is obtained, and recorded as ΔT.

[0026] According to the calculation formula The charging state compliance index α corresponding to the specified charging parking lot within the specified time period is obtained, where T′ represents the duration corresponding to the specified time period, ND represents the number of charging piles in the specified charging parking lot stored in the charging pile management database, ND′ represents the number of electric vehicles in the specified charging parking lot within the specified time period, and γ 1 , γ 2 They are the weight factors corresponding to the set duration and number of charging piles respectively.

[0027] Optionally, the determination of the charging status corresponding to the designated charging parking lot within the specified time period is carried out as follows: comparing the charging status compliance index corresponding to the designated charging parking lot within the specified time period with the set standard charging status compliance index; if the charging status compliance index corresponding to the designated charging parking lot within the specified time period is less than the standard charging status compliance index, then it is determined that the charging status corresponding to the designated charging parking lot within the specified time period is in a charging valley state; otherwise, it is determined that the charging status corresponding to the designated charging parking lot within the specified time period is in a charging peak state.

[0028] Optionally, the power storage information of the batteries in the designated charging parking lot within the designated time period is analyzed, and the specific analysis steps are as follows: S81, obtaining a standard power storage speed of the batteries corresponding to the designated charging parking lot from a battery management database.

[0029] S82. Compare the power generation speed corresponding to the solar panels in the designated charging parking lot in the designated time period with the total charging speed of the charging piles corresponding to each power supply adjustment time. If the power generation speed corresponding to the solar panels in the designated charging parking lot in the designated time period is greater than the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the difference between the power generation speed corresponding to the solar panels in the designated charging parking lot in the designated time period and the total charging speed of the charging piles corresponding to the power supply adjustment time is used as the power storage speed corresponding to the solar panels in the designated charging parking lot at the power supply adjustment time.

[0030] S83. Compare the standard charging speed of the battery corresponding to the designated charging parking lot with the charging speed of the solar panel corresponding to the designated charging parking lot at the power supply adjustment time. If the standard charging speed of the battery corresponding to the designated charging parking lot is less than or equal to the charging speed of the solar panel corresponding to the designated charging parking lot at the power supply adjustment time, then the power storage source of the battery at the power supply adjustment time is solar energy, and the charging speed of the solar energy corresponding to the power supply adjustment time is the standard charging speed of the battery.

[0031] S84. If the standard charging speed of the battery corresponding to the designated charging parking lot is greater than the charging speed of the solar panel at the designated charging parking lot at the power adjustment time, then the power storage sources of the battery at the power adjustment time are solar energy and the power grid, wherein the charging speed of the solar energy at the power adjustment time is the difference between the power generation speed of the solar panel at the designated charging parking lot and the total charging speed of the charging pile at the power adjustment time, and the charging speed of the power grid at the power adjustment time is the difference between the standard charging speed of the battery and the charging speed of the solar energy at the designated charging parking lot at the power adjustment time.

[0032] S85. If the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is less than or equal to the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the power storage source corresponding to the battery at the power supply adjustment time is the power grid, and the power storage speed of the power grid at the power supply adjustment time is the standard power storage speed of the battery.

[0033] S86. According to the analysis method of steps S81 to S85, the power storage information of the batteries in the designated charging parking lot within the designated time period is analyzed and obtained, wherein the power storage information includes each power storage source corresponding to each power supply adjustment time and the power storage speed corresponding to each power storage source.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention provides an intelligent control method for charging pile energy storage based on multiple energy conversions, which solves the problems existing in the current technology by analyzing the power supply and storage conditions of the batteries in the charging parking lot, and realizes the intelligent and automated power supply and storage of the charging parking lot, effectively ensuring the charging effect of the charging parking lot and the utilization rate of solar energy, while also ensuring the stability of the power operation of the charging parking lot.

[0035] 2. In the battery power supply mode analysis, the present invention analyzes the power supply mode of the battery in the designated charging parking lot, thereby providing a reliable guarantee for the subsequent power supply control analysis of the designated charging parking lot, and greatly improving the charging efficiency of the charging piles in the charging parking lot.

[0036] 3. In the battery power supply control of the present invention, the power supply control information of the designated charging parking lot is analyzed and the power supply is controlled, which effectively ensures the stability of the electric vehicle during the charging process, and also greatly improves the charging effect of the charging parking lot.

[0037] 4. The present invention analyzes the charging status of the charging parking lot during the charging status analysis of the charging pile, laying a foundation for the subsequent battery storage analysis and effectively improving the stability of the operation of the charging parking lot.

[0038] 5. The present invention effectively improves the accuracy of battery storage by analyzing the battery storage source and storage speed in battery storage analysis and control, which not only effectively reduces the waste of resources in charging parking lots, but also alleviates the impact of subsequent charging peak periods on the power grid to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0040] Figure 1 The present invention is a schematic diagram of the implementation process of the method. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1 As shown, a charging pile energy storage intelligent control method based on multiple energy conversions includes the following steps: Step 1, charging pile charging information acquisition: acquiring the charging information of each electric vehicle in a designated charging parking lot within a designated time period from a charging order management center.

[0043] In a specific embodiment, the charging information of each electric vehicle includes the charging pile number, the charging start time and the preset charging duration.

[0044] It should be noted that the charging pile number of each electric vehicle is the charging pile number used by each electric vehicle.

[0045] Step 2: Charging speed analysis of charging piles: Analyze the charging speed of the corresponding charging piles of each electric vehicle in a designated charging parking lot within a specified time period.

[0046] In a specific embodiment, the charging speed of the charging pile corresponding to each electric vehicle in a designated charging parking lot within a specified time period is analyzed, and the specific analysis process is as follows: the charging voltage and charging current corresponding to each electric vehicle in the designated charging parking lot within the specified time period are obtained, and then the charging power corresponding to each electric vehicle in the designated charging parking lot within the specified time period is obtained, and the charging power corresponding to each electric vehicle in the designated charging parking lot within the specified time period is compared with the standard charging speed corresponding to each charging power stored in the charging pile database, and the standard charging speed corresponding to each electric vehicle in the designated charging parking lot within the specified time period is obtained, and it is used as the charging speed of the charging pile corresponding to each electric vehicle in the designated charging parking lot within the specified time period.

[0047] In the above, the charging voltage and charging current corresponding to each electric vehicle in the designated charging parking lot within the specified time period are obtained. The specific acquisition process is as follows: the number of the charging pile used by each electric vehicle in the designated charging parking lot within the specified time period is compared with the charging voltage and charging current corresponding to the number of each charging pile in the specified time period in the charging pile management center. If the number of the charging pile used by an electric vehicle in the designated charging parking lot within the specified time period is the same as the number of a charging pile in the designated time period in the charging pile management center, then the charging voltage and charging current corresponding to the charging pile number in the designated time period in the charging pile management center are used as the charging voltage and charging current corresponding to the electric vehicle in the designated charging parking lot within the specified time period. In this way, the charging voltage and charging current corresponding to each electric vehicle in the designated charging parking lot within the specified time period are obtained.

[0048] It should be noted that each charging pile in the designated charging parking lot is equipped with a voltmeter and an ammeter.

[0049] The embodiment of the present invention effectively ensures the reliability of the analysis results of the actual charging amount of electric vehicles by analyzing the charging speed of the charging piles corresponding to each electric vehicle, thereby greatly improving the accuracy of the subsequent parking lot power supply mode analysis results, and also saving energy and costs of the charging parking lot.

[0050] Step 3: Parking lot power supply mode analysis: Analyze the power supply mode corresponding to the designated charging parking lot within the specified time period, where the power supply mode includes off-grid mode and grid-connected mode.

[0051] It should be noted that the off-grid mode does not require access to the grid for power supply, while the grid-connected mode does require access to the grid for power supply.

[0052] In a specific embodiment, the power supply mode corresponding to the designated charging parking lot within the designated time period is analyzed, and the specific analysis process is as follows: according to the start charging time and the preset charging duration of each electric vehicle in the charging parking lot within the designated time period, each power supply adjustment time corresponding to the designated time period is obtained.

[0053] The power generation speed corresponding to the solar panels of the specified charging parking lot in the specified time period is obtained. At the same time, according to the charging speed of the charging pile corresponding to each electric vehicle, the preset charging time and the power supply adjustment time, the total charging speed of the charging pile corresponding to each power supply adjustment time is obtained. At the same time, the maximum power supply speed corresponding to the battery is obtained from the battery management center.

[0054] According to the charging speed of the charging pile corresponding to each electric vehicle, the preset charging time and each power supply adjustment time, the total charging speed of the charging pile corresponding to each power supply adjustment time is obtained.

[0055] The power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period, the maximum power supply speed corresponding to the battery, and the total charging speed of the charging piles corresponding to each power supply adjustment time are compared.

[0056] If the total charging speed of the charging piles corresponding to a certain power supply adjustment time in the specified time period is greater than or equal to the sum of the power generation speed of the solar panels in the specified charging parking lot and the maximum power supply speed corresponding to the battery, then the power supply mode corresponding to the designated parking lot at the power supply adjustment time in the specified time period is determined to be the grid-connected mode; otherwise, the power supply mode corresponding to the designated parking lot at the power supply adjustment time in the specified time period is determined to be the off-grid mode, thereby obtaining the power supply modes corresponding to the designated parking lots at each power supply adjustment time in the specified time period.

[0057] The embodiment of the present invention provides a reliable guarantee for the subsequent power supply control analysis of the charging parking lot by analyzing the power supply mode of the designated charging parking lot, thereby greatly improving the charging efficiency of the charging parking lot.

[0058] Step 4: Parking lot power supply control: Based on the power supply mode corresponding to the designated charging parking lot within the designated time period, the power supply control information of the power supply mode corresponding to the designated charging parking lot within the designated time period is analyzed, and then the power supply of the battery is controlled.

[0059] In a specific embodiment, the power supply control information of the power supply mode corresponding to the designated charging parking lot within the specified time period is analyzed, and the specific analysis steps are as follows: S41. If the power supply mode corresponding to the designated charging parking lot at a certain power supply adjustment time within the specified time period is the off-grid mode, then the power generation speed corresponding to the solar panel of the designated charging parking lot in the specified time period and the total charging speed of the charging piles corresponding to each power supply adjustment time are compared.

[0060] S42. If the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is greater than or equal to the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the power supply source corresponding to the designated charging parking lot for the power supply adjustment in the designated time period is solar energy, and the power supply speed of the solar energy at the power supply adjustment time in the designated time period is the total charging speed of the charging piles corresponding to the power supply adjustment time in the designated time period.

[0061] S43. If the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is less than the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the power supply source corresponding to the designated charging parking lot at the power supply adjustment time in the designated time period is solar energy and batteries, the power supply speed of the solar energy at the power supply adjustment time in the designated time period is the power generation speed corresponding to the solar panels, and the power supply speed of the batteries corresponding to the power supply adjustment time in the designated time period is the difference between the total charging speed of the charging piles corresponding to the power supply adjustment time and the power generation speed of the solar panels.

[0062] S44. If the power supply mode corresponding to the designated charging parking lot at a certain power supply adjustment time in the specified time period is the grid-connected mode, then the power supply sources corresponding to the designated charging parking lot at the power supply adjustment time in the specified time period are solar energy, batteries and power grid, wherein the power supply speed of the solar energy at the power supply adjustment time in the specified time period is the power generation speed corresponding to the solar cell panel, the power supply speed of the battery at the power supply adjustment time in the specified time period is the maximum power supply speed corresponding to the battery, and the power supply speed of the power grid corresponding to the power supply adjustment time in the specified time period is the difference between the total charging speed of the charging pile corresponding to the power supply adjustment time and the power generation speed of the solar cell panel and the maximum power supply speed of the battery.

[0063] S45. According to the analysis method of steps S41 to S44, the power supply control information of the power supply mode corresponding to the designated charging parking lot within the designated time period is analyzed, wherein the power supply control information includes each power supply source corresponding to each power supply adjustment time and the power supply speed of each power supply source.

[0064] In the battery power supply control of the present invention, the power supply control information of the designated charging parking lot is analyzed and the power supply is controlled, thereby effectively ensuring the stability of the electric vehicle during the charging process, and also greatly improving the charging effect of the charging parking lot.

[0065] Step 5: Parking lot charging status analysis: Based on the charging information of each electric vehicle in the designated charging parking lot within the designated time period, analyze the charging status compliance index corresponding to the designated charging parking lot within the designated time period.

[0066] In a specific embodiment, the charging status compliance index corresponding to the specified charging parking lot within the specified time period is analyzed. The specific analysis process is as follows: the specified time period is compared with the time period corresponding to the set charging valley state, and the overlapping time length corresponding to the specified time period and the charging valley state time period is obtained, and recorded as ΔT.

[0067] According to the calculation formula The charging state compliance index α corresponding to the specified charging parking lot within the specified time period is obtained, where T′ represents the duration corresponding to the specified time period, ND represents the number of charging piles in the specified charging parking lot stored in the charging pile management database, ND′ represents the number of electric vehicles in the specified charging parking lot within the specified time period, and γ 1 , γ 2 They are the weight factors corresponding to the set duration and number of charging piles respectively.

[0068] The embodiment of the present invention lays a foundation for subsequent battery storage analysis by analyzing the charging status of the charging piles in the charging parking lot, and effectively improves the stability of the operation of the charging parking lot.

[0069] Step 6: Determine the charging status of the parking lot: Determine the charging status of the designated charging parking lot within the specified time period based on the charging status compliance index of the designated charging parking lot within the specified time period. If the charging status of the designated charging parking lot within the specified time period is in a low charging state, execute step 7.

[0070] In a specific embodiment, the charging status corresponding to the designated charging parking lot within the specified time period is determined, and the specific determination process is as follows: the charging status compliance index corresponding to the designated charging parking lot within the specified time period is compared with the set standard charging status compliance index. If the charging status compliance index corresponding to the designated charging parking lot within the specified time period is less than the standard charging status compliance index, it is determined that the charging status corresponding to the designated charging parking lot within the specified time period is in a charging valley state; otherwise, it is determined that the charging status corresponding to the designated charging parking lot within the specified time period is in a charging peak state.

[0071] Step 7: Battery power analysis and control: Analyze the power storage information of the batteries in the designated charging parking lot within the designated time period, and then control the power storage of the batteries.

[0072] In a specific embodiment, the power storage information of the batteries in the designated charging parking lot within the designated time period is analyzed, and the specific analysis steps are as follows: S81, obtaining the standard power storage speed of the batteries corresponding to the designated charging parking lot from the battery management database.

[0073] S82. Compare the power generation speed corresponding to the solar panels in the designated charging parking lot in the designated time period with the total charging speed of the charging piles corresponding to each power supply adjustment time. If the power generation speed corresponding to the solar panels in the designated charging parking lot in the designated time period is greater than the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the difference between the power generation speed corresponding to the solar panels in the designated charging parking lot in the designated time period and the total charging speed of the charging piles corresponding to the power supply adjustment time is used as the power storage speed corresponding to the solar panels in the designated charging parking lot at the power supply adjustment time.

[0074] S83. Compare the standard charging speed of the battery corresponding to the designated charging parking lot with the charging speed of the solar panel corresponding to the designated charging parking lot at the power supply adjustment time. If the standard charging speed of the battery corresponding to the designated charging parking lot is less than or equal to the charging speed of the solar panel corresponding to the designated charging parking lot at the power supply adjustment time, then the power storage source of the battery at the power supply adjustment time is solar energy, and the charging speed of the solar energy corresponding to the power supply adjustment time is the standard charging speed of the battery.

[0075] S84. If the standard charging speed of the battery corresponding to the designated charging parking lot is greater than the charging speed of the solar panel at the designated charging parking lot at the power adjustment time, then the power storage sources of the battery at the power adjustment time are solar energy and the power grid, wherein the charging speed of the solar energy at the power adjustment time is the difference between the power generation speed of the solar panel at the designated charging parking lot and the total charging speed of the charging pile at the power adjustment time, and the charging speed of the power grid at the power adjustment time is the difference between the standard charging speed of the battery and the charging speed of the solar energy at the designated charging parking lot at the power adjustment time.

[0076] S85. If the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is less than or equal to the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the power storage source corresponding to the battery at the power supply adjustment time is the power grid, and the power storage speed of the power grid at the power supply adjustment time is the standard power storage speed of the battery.

[0077] S86. According to the analysis method of steps S81 to S85, the power storage information of the batteries in the designated charging parking lot within the designated time period is analyzed and obtained, wherein the power storage information includes each power storage source corresponding to each power supply adjustment time and the power storage speed corresponding to each power storage source.

[0078] The embodiment of the present invention effectively improves the accuracy of battery storage by analyzing the battery storage source and storage speed, which not only effectively reduces the resource waste of the charging parking lot, but also alleviates the impact of subsequent charging peak periods on the power grid to a certain extent.

[0079] The embodiment of the present invention solves the problems existing in the current technology by analyzing the power supply and storage conditions of the batteries in the charging parking lot, realizes the intelligent and automated power supply and storage of the charging parking lot, effectively guarantees the charging effect of the charging parking lot and the utilization rate of solar energy, and also ensures the stability of the power operation of the charging parking lot.

[0080] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A charging pile energy storage intelligent control method based on multiple energy conversion, characterized in that: The method comprises the following steps: Step 1: Obtaining charging information of charging piles: Obtaining charging information of each electric vehicle in a designated charging parking lot within a designated time period from a charging order management center; the charging information of each electric vehicle includes the charging pile number, the start charging time, and the preset charging duration; Step 2: Charging speed analysis of charging piles: analyzing the charging speed of the corresponding charging piles of each electric vehicle in a designated charging parking lot within a designated time period; Step 3: Parking lot power supply mode analysis: Analyze the power supply mode corresponding to the designated charging parking lot within the specified time period, where the power supply mode includes off-grid mode and grid-connected mode; Step 4: Parking lot power supply control: Based on the power supply mode corresponding to the designated charging parking lot within the designated time period, analyze the power supply control information of the power supply mode corresponding to the designated charging parking lot within the designated time period, and then control the power supply of the battery; Step 5: Parking lot charging status analysis: Based on the charging information of each electric vehicle in the designated charging parking lot within the designated time period, analyze the charging status compliance index corresponding to the designated charging parking lot within the designated time period; Step 6: Determine the charging status of the parking lot: Determine the charging status of the designated charging parking lot within the specified time period based on the charging status compliance index of the designated charging parking lot within the specified time period. If the charging status of the designated charging parking lot within the specified time period is in a charging valley state, execute step 7. The charging status compliance index corresponding to the specified charging parking lot within the specified time period is analyzed, and the specific analysis process is as follows: Compare the specified time period with the time period corresponding to the set charging valley state, and obtain the overlap time length corresponding to the specified time period and the charging valley state time period, and record it as ; According to the calculation formula , get the charging status compliance index corresponding to the specified charging parking lot within the specified time period ,in Indicates the duration corresponding to the specified time period. Indicates the number of charging piles in the specified charging parking lot stored in the charging pile management database. Indicates the number of electric vehicles in a specified charging parking lot during a specified time period. , They are the weight factors corresponding to the set duration and number of charging piles respectively; Step 7: Battery power analysis and control: Analyze the power storage information of the batteries in the designated charging parking lot within the designated time period, and then control the power storage of the batteries.

2. According to claim 1, a charging pile energy storage intelligent control method based on multiple energy conversion is characterized in that: The analysis of the charging speed of each electric vehicle corresponding to the charging pile in the designated charging parking lot within the designated time period is specifically performed as follows: The charging voltage and charging current corresponding to each electric vehicle in the designated charging parking lot within the specified time period are obtained, and then the charging power corresponding to each electric vehicle in the designated charging parking lot within the specified time period is obtained, and the charging power corresponding to each electric vehicle in the designated charging parking lot within the specified time period is compared with the standard charging speed corresponding to each charging power stored in the charging pile database, and the standard charging speed corresponding to each electric vehicle in the designated charging parking lot within the specified time period is obtained, and it is used as the charging speed of the charging pile corresponding to each electric vehicle in the designated charging parking lot within the specified time period.

3. According to claim 2, a charging pile energy storage intelligent control method based on multiple energy conversion is characterized in that: The specific analysis process of analyzing the power supply mode corresponding to the designated charging parking lot within the designated time period is as follows: According to the start charging time of each electric vehicle in the charging parking lot in the specified time period and the preset charging time, the power supply adjustment time corresponding to the specified time period is obtained; Obtain the power generation speed corresponding to the solar panels of the specified charging parking lot in the specified time period, and obtain the total charging speed of the charging piles corresponding to each power supply adjustment time according to the charging speed of each electric vehicle, the preset charging time and each power supply adjustment time, and obtain the maximum power supply speed corresponding to the battery from the battery management center; According to the charging speed of the charging pile corresponding to each electric vehicle, the preset charging time and each power supply adjustment time, the total charging speed of the charging pile corresponding to each power supply adjustment time is obtained; Compare the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period, the maximum power supply speed corresponding to the battery, and the total charging speed of the charging piles corresponding to each power supply adjustment time; If the total charging speed of the charging piles corresponding to a certain power supply adjustment time in the specified time period is greater than or equal to the sum of the power generation speed of the solar panels in the specified charging parking lot and the maximum power supply speed corresponding to the battery, then the power supply mode corresponding to the designated parking lot at the power supply adjustment time in the specified time period is determined to be the grid-connected mode; otherwise, the power supply mode corresponding to the designated parking lot at the power supply adjustment time in the specified time period is determined to be the off-grid mode, thereby obtaining the power supply modes corresponding to the designated parking lots at each power supply adjustment time in the specified time period.

4. According to claim 3, a charging pile energy storage intelligent control method based on multiple energy conversion is characterized in that: The specific analysis steps of analyzing the power supply control information of the power supply mode corresponding to the specified charging parking lot within the specified time period are as follows: S41. If the power supply mode corresponding to the designated charging parking lot at a certain power supply adjustment time within the designated time period is the off-grid mode, then compare the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period with the total charging speed of the charging piles corresponding to each power supply adjustment time; S42. If the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is greater than or equal to the total charging speed of the charging pile corresponding to a certain power supply adjustment time, then the power supply source corresponding to the designated charging parking lot for the power supply adjustment in the designated time period is solar energy, and the power supply speed of the solar energy at the power supply adjustment time in the designated time period is the total charging speed of the charging pile corresponding to the power supply adjustment time in the designated time period; S43. If the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is less than the total charging speed of the charging piles corresponding to a certain power supply adjustment time, then the power supply source corresponding to the designated charging parking lot at the power supply adjustment time in the designated time period is solar energy and batteries, the power supply speed of the solar energy at the power supply adjustment time in the designated time period is the power generation speed corresponding to the solar panels, and the power supply speed of the batteries at the power supply adjustment time in the designated time period is the difference between the total charging speed of the charging piles corresponding to the power supply adjustment time and the power generation speed of the solar panels; S44. If the power supply mode corresponding to the designated charging parking lot at a certain power supply adjustment time in the specified time period is the grid-connected mode, then the power supply sources corresponding to the designated charging parking lot at the power supply adjustment time in the specified time period are solar energy, storage battery and power grid, wherein the power supply speed of the solar energy at the power supply adjustment time in the specified time period is the power generation speed corresponding to the solar panel, the power supply speed of the storage battery at the power supply adjustment time in the specified time period is the maximum power supply speed corresponding to the storage battery, and the power supply speed of the power grid corresponding to the power supply adjustment time in the specified time period is the difference between the total charging speed of the charging pile corresponding to the power supply adjustment time and the power generation speed of the solar panel and the maximum power supply speed of the storage battery; S45. According to the analysis method of steps S41 to S44, the power supply control information of the power supply mode corresponding to the designated charging parking lot within the designated time period is analyzed, wherein the power supply control information includes each power supply source corresponding to each power supply adjustment time and the power supply speed of each power supply source.

5. According to claim 4, a charging pile energy storage intelligent control method based on multiple energy conversion is characterized in that: The specific judgment process of judging the charging status of the designated charging parking lot within the designated time period is as follows: The charging state compliance index corresponding to the designated charging parking lot within the designated time period is compared with the set standard charging state compliance index. If the charging state compliance index corresponding to the designated charging parking lot within the designated time period is less than the standard charging state compliance index, it is determined that the charging state corresponding to the designated charging parking lot within the designated time period is in a charging valley state; otherwise, it is determined that the charging state corresponding to the designated charging parking lot within the designated time period is in a charging peak state.

6. The method for intelligent control of charging pile energy storage based on multiple energy conversion according to claim 1 is characterized in that: The power storage information of the batteries in the designated charging parking lot within the designated time period is analyzed, and the specific analysis steps are as follows: S81, obtaining a standard charging speed of a battery corresponding to a designated charging parking lot from a battery management database; S82, comparing the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period with the total charging speed of the charging piles corresponding to each power supply adjustment time; if the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period is greater than the total charging speed of the charging piles corresponding to a certain power supply adjustment time, the difference between the power generation speed corresponding to the solar panels of the designated charging parking lot in the designated time period and the total charging speed of the charging piles corresponding to the power supply adjustment time is used as the power storage speed corresponding to the solar panels of the designated charging parking lot at the power supply adjustment time; S83, comparing the standard charging speed of the battery corresponding to the designated charging parking lot with the charging speed of the solar panel corresponding to the designated charging parking lot at the power supply adjustment time; if the standard charging speed of the battery corresponding to the designated charging parking lot is less than or equal to the charging speed of the solar panel corresponding to the designated charging parking lot at the power supply adjustment time, then the power storage source of the battery at the power supply adjustment time is solar energy, and the charging speed of the solar energy corresponding to the power supply adjustment time is the standard charging speed of the battery; S84. If the standard charging speed of the battery corresponding to the designated charging parking lot is greater than the charging speed of the solar panel corresponding to the designated charging parking lot at the power supply adjustment time, then the power storage sources of the battery at the power supply adjustment time are solar energy and the power grid, wherein the charging speed corresponding to the solar energy at the power supply adjustment time is the difference between the power generation speed corresponding to the solar panel at the designated charging parking lot and the total charging speed of the charging pile at the power supply adjustment time, and the charging speed corresponding to the power grid at the power supply adjustment time is the difference between the standard charging speed of the battery and the charging speed of the solar energy at the designated charging parking lot at the power supply adjustment time; S85. If the power generation speed corresponding to the solar panel of the designated charging parking lot in the designated time period is less than or equal to the total charging speed of the charging pile corresponding to a certain power supply adjustment time, then the power storage source corresponding to the battery at the power supply adjustment time is the power grid, and the power storage speed of the power grid at the power supply adjustment time is the standard power storage speed of the battery; S86. According to the analysis method of steps S81 to S85, the power storage information of the batteries in the designated charging parking lot within the designated time period is analyzed and obtained, wherein the power storage information includes each power storage source corresponding to each power supply adjustment time and the power storage speed corresponding to each power storage source.

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