Vehicle charging method and movable charging pile system

Abstract

The application discloses a vehicle charging method and a movable charging pile system, and relates to the technical field of mobile charging. The vehicle charging method comprises the following steps: in the case that a charging request of a target vehicle is received, a target charging pile in each movable charging pile is controlled to move to a charging position where the target vehicle is located; in the case that the current available power of the target charging pile is less than the charging demand power carried by the charging request, a first target number of target energy storage converter units are selected from each movable energy storage converter unit according to the power difference between the charging demand power and the current available power; each target energy storage converter unit is controlled to move to the charging position and be connected with the target charging pile; and the target charging pile is controlled to charge the target vehicle through the body energy storage converter unit of the target charging pile and each target energy storage converter unit. The application can improve the utilization rate of charging resources on the basis of ensuring the reliability and efficiency of charging.

Description

Technical Field

[0001] This application relates to the field of mobile charging technology, and in particular to a vehicle charging method and a mobile charging pile system. Background Technology

[0002] With the increasing popularity of electric vehicles, mobile charging stations have gained widespread attention in residential communities, industrial parks and other settings because they do not require fixed installation and can be deployed flexibly.

[0003] Currently, mobile charging stations are mainly divided into two architectures. One type is a charging station with a single built-in power conversion system (PCS). Its power conversion unit is singular, and if it fails, the entire unit shuts down, resulting in poor charging reliability and low charging efficiency. The other type is a charging station with multiple built-in power conversion systems. While it can achieve high-power charging, the frequency of high-power charging demand is relatively low in actual operation. This leads to some power conversion systems being idle, resulting in a significant waste of hardware resources. Summary of the Invention

[0004] The main purpose of this application is to provide a vehicle charging method and a mobile charging pile system, which aims to improve the utilization rate of charging resources while ensuring charging reliability and efficiency.

[0005] This application provides a vehicle charging method, applied to a mobile charging pile system, the mobile charging pile system including a plurality of mobile charging piles and a plurality of mobile energy storage converter units. The method includes: Upon receiving a charging request from a target vehicle, the system controls the target charging station among the mobile charging stations to move to the charging location where the target vehicle is located. If the current available power of the target charging pile is less than the charging demand power carried by the charging request, the first target number of mobile energy storage converter units to be scheduled is determined based on the power difference between the charging demand power and the current available power, and the first target number of mobile energy storage converter units are selected from each of the mobile energy storage converter units as each target energy storage converter unit. Control each of the target energy storage converter units to move to the charging position and dock with the target charging pile; The target charging pile is controlled to charge the target vehicle through its own energy storage converter unit and each of the target energy storage converter units.

[0006] In some embodiments, the step of determining a first target number of mobile energy storage converter units to be scheduled based on the power difference between the charging demand power and the currently available power includes: Determine the ratio between the power difference and the rated power of the portable energy storage converter unit, and round it up to obtain the candidate quantity; Determine the total number of currently available mobile energy storage converter units in each of the aforementioned mobile energy storage converter units; If the number of candidates is less than the difference between the total number and the first preset redundancy number, the number of candidates shall be taken as the first target number. If the number of candidates is greater than or equal to the difference between the total number and the first preset redundancy number, the difference between the total number and the first preset redundancy number shall be taken as the first target number.

[0007] In some embodiments, the step of selecting the first target number of mobile energy storage converter units from each of the mobile energy storage converter units as each target energy storage converter unit includes: Obtain first scheduling evaluation information for each of the mobile energy storage converter units, wherein the first scheduling evaluation information includes at least one of the following: location information, integrity information, remaining power, and expected path information for the mobile energy storage converter unit to move to the charging location; Based on the first scheduling evaluation information of each of the mobile energy storage converter units, a first availability score is determined for each of the mobile energy storage converter units. Based on the first availability score in descending order, select the first target number of mobile energy storage converter units from each of the mobile energy storage converter units as each of the target energy storage converter units.

[0008] In some embodiments, the step of controlling each of the target energy storage converter units to move to the charging position and dock with the target charging pile includes: For any of the target energy storage converter units, control the target energy storage converter unit to move to the docking station of the target charging pile, and mechanically lock it to the docking station; After mechanical locking is completed, an electrical connection is established between the target energy storage converter unit and the target charging pile, and a communication handshake is performed. After completing the electrical connection and communication handshake, a high-voltage interlock verification is performed on the connection status between the target energy storage converter unit and the target charging pile. After the high-voltage interlock verification is passed, the high-voltage circuit between the target charging pile and the target energy storage converter unit is connected to complete the docking of the target energy storage converter unit and the target charging pile.

[0009] In some embodiments, before the step of controlling the target charging pile in each of the portable charging piles to move to the charging location where the target vehicle is located, the method further includes: Obtain second scheduling evaluation information for each of the mobile charging piles, wherein the second scheduling evaluation information includes at least one of the following: location information, remaining power, current working status, and expected path information of the mobile charging pile moving to the charging location; Based on the second scheduling evaluation information of each of the mobile charging piles, a second availability score for each of the mobile charging piles is determined; The mobile charging pile with the highest second availability score among all the mobile charging piles is selected as the target charging pile.

[0010] In some embodiments, the method further includes: During the process of controlling the target charging pile to charge the target vehicle through the main energy storage converter unit of the target charging pile and each of the target energy storage converter units, the real-time charging power demand of the target vehicle is dynamically acquired. Based on the real-time charging power demand, determine the required number of energy storage converter units. If, among the main energy storage converter unit of the target charging pile and each target energy storage converter unit, the total number of energy storage converter units in operation is greater than the required number, and the difference between the total number of energy storage converter units in operation and the required number is greater than the second preset redundancy number, then each target energy storage converter unit is controlled to exit the operation state one by one according to the operating time of each target energy storage converter unit, until the difference between the total number of energy storage converter units in operation and the required number is less than or equal to the second preset redundancy number.

[0011] In some embodiments, the method further includes: During the process of controlling the target charging pile to charge the target vehicle through the main energy storage converter unit of the target charging pile and each of the target energy storage converter units, if a fault is detected in any of the target energy storage converter units, the faulty target energy storage converter unit is controlled to detach from the target charging pile and leave the charging position. The target charging pile is controlled to continue charging the target vehicle through its own energy storage converter unit and other target energy storage converter units that have not failed.

[0012] In some embodiments, the portable charging pile includes a plurality of on-board energy storage converter units, wherein the rated power of the on-board energy storage converter units is greater than or equal to the rated power of the AC charging circuit of the portable charging pile. After the step of controlling the target charging pile in each of the mobile charging piles to move to the charging location of the target vehicle, the method further includes: If the current available power is detected to be greater than or equal to the charging power demand, the charging type corresponding to the target vehicle is determined; When the charging type is AC charging, the target charging pile is controlled to charge the target vehicle through any one of the main energy storage converter units of the target charging pile. When the charging type is DC charging, a second target number of the main body energy storage converter units required by the target charging pile is determined based on the charging power demand. The second target number is less than or equal to the difference between the total number of main body energy storage converter units of the target charging pile and the first preset redundancy number. The target charging pile is controlled to charge the target vehicle through the second target number of the main energy storage converter units in each main energy storage converter unit of the target charging pile.

[0013] In some embodiments, the step of controlling the target charging pile to charge the target vehicle through any one of the on-board energy storage inverter units of the target charging pile includes: Determine the type of AC charging gun connected to the AC charging port of the target charging pile; When the AC charging gun is a single-phase AC charging gun, the target charging pile is controlled to output single-phase AC power to the AC charging port through any one of the main energy storage converter units of the target charging pile to charge the target vehicle. When the AC charging gun is a three-phase AC charging gun, the target charging pile is controlled to output three-phase AC power to the AC charging port through any one of the main energy storage converter units of the target charging pile, so as to charge the target vehicle.

[0014] In some embodiments, the step of controlling the target charging pile to charge the target vehicle through the second target number of on-board energy storage converter units in each on-board energy storage converter unit of the target charging pile includes: If the total number of operating units in each of the target charging pile's main energy storage converter units is less than the second target number, then each idle unit in the target charging pile is controlled to enter the operating state one by one until the total number of operating units is greater than or equal to the second target number. If the difference between the total number of operating energy storage converter units in each of the target charging pile and the second target number is greater than the first preset redundancy number, then each redundant energy storage converter unit is controlled to exit the operating state one by one until the difference between the total number of operating energy storage converter units and the second target number is equal to the first preset redundancy number. If the difference between the total number of operating energy storage converter units in each of the target charging pile and the second target number is equal to the first preset redundancy number, then each operating energy storage converter unit in the target charging pile shall continue to operate.

[0015] Furthermore, to achieve the above objectives, this application also provides a mobile charging pile system, the mobile charging pile system comprising: Several portable charging piles, each portable charging pile including a DC charging port, at least one AC charging port, and at least one on-board energy storage converter unit; Several portable energy storage converter units; A control device for performing the vehicle charging method described above is communicatively connected to each of the mobile charging piles and each of the mobile energy storage converter units.

[0016] In some embodiments, the portable charging station further includes an auxiliary power source; The auxiliary power supply is integrated inside the AC / AC module and / or AC / DC module of the portable charging pile, or the auxiliary power supply is independently set outside the AC / AC module and the AC / DC module, and the auxiliary power supply is connected to the AC bus of the portable charging pile. The auxiliary power supply is used to power the low-voltage components in the portable charging station.

[0017] This application provides a vehicle charging method applied to a mobile charging pile system. The mobile charging pile system includes several mobile charging piles and several mobile energy storage converter units. The vehicle charging method includes: upon receiving a charging request from a target vehicle, controlling the target charging pile in each mobile charging pile to move to the charging location of the target vehicle; if it is detected that the current available power of the target charging pile is less than the charging demand power carried by the charging request, determining a first target number of mobile energy storage converter units to be scheduled based on the power difference between the charging demand power and the current available power, and selecting the first target number of mobile energy storage converter units from each mobile energy storage converter unit as each target energy storage converter unit; controlling each target energy storage converter unit to move to the charging location and dock with the target charging pile; and controlling the target charging pile to charge the target vehicle through the energy storage converter unit of the target charging pile and each target energy storage converter unit.

[0018] Therefore, the technical solution provided in this application, by setting up multiple mobile energy storage converter units in the mobile charging pile system, allows for the dispatch of a corresponding number of mobile energy storage converter units based on the power difference when the current available power of the target charging pile cannot meet the charging needs of the target vehicle. These units are then moved to the charging location to connect with the target charging pile, enabling the target charging pile to supplement its charging with the power of the external mobile energy storage converter units, thus meeting the vehicle's charging needs and achieving on-demand expansion of charging pile power. This effectively ensures charging efficiency and reliability. Simultaneously, each mobile energy storage converter unit, acting as a mobile shared resource pool, can respond to power shortages at different times by being dispatched to the corresponding charging location, thereby effectively improving the overall utilization rate of charging resources.

[0019] In summary, the technical solution provided in this application can improve the utilization rate of charging resources while ensuring charging reliability and charging efficiency. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1A schematic flowchart illustrating the vehicle charging method provided in the first embodiment of this application; Figure 2 This is a schematic diagram illustrating the implementation principle of step S10 provided in the first embodiment of this application; Figure 3 A schematic diagram illustrating the connection between the target energy storage converter unit and the target charging pile provided in the first embodiment of this application; Figure 4 This is a charging topology diagram provided in the first embodiment of this application; Figure 5 A schematic diagram of the structure of the portable charging pile provided in the fourth embodiment of this application; Figure 6 The circuit structure diagram of the portable charging pile when the AC charging port connected to the AC charging gun in the fourth embodiment of this application is a single-phase AC charging gun. Figure 7 The circuit structure diagram of the portable charging pile when the AC charging port connected to the AC charging gun in the fourth embodiment of this application is a three-phase AC charging gun. Figure 8 A schematic diagram illustrating the implementation principle of step S14 provided in the fourth embodiment of this application; Figure 9 A simplified flowchart of the vehicle charging method provided in the embodiments of this application; Figure 10 This is a schematic diagram of the hardware operating environment involved in the embodiments of this application; Figure 11 A schematic diagram of the circuit structure of a portable charging pile provided in an embodiment of this application; Figure 12 A communication architecture diagram of a mobile charging pile system provided in an embodiment of this application; Figure 13 A schematic diagram illustrating the communication principle between the control module and the portable charging pile and the portable energy storage converter unit provided in the embodiments of this application. Figure 14 The circuit structure diagram of the portable charging pile is shown when the auxiliary power supply provided in the embodiments of this application is integrated inside the AC / AC module and AC / DC module of the portable charging pile.

[0023] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0025] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0026] The vehicle charging method described in this application can be implemented by a control device in a mobile charging pile system that has data processing, network communication, and program execution functions, such as a controller or control chip.

[0027] The following description uses the control device in a mobile charging pile system as the main execution entity to illustrate the various embodiments.

[0028] This application presents a vehicle charging method according to a first embodiment, applied to a mobile charging pile system. The mobile charging pile system includes a plurality of mobile charging piles and a plurality of mobile energy storage converter units; please refer to... Figure 1 The vehicle charging method may include steps S10 to S40: Step S10: Upon receiving a charging request from the target vehicle, control the target charging pile among the mobile charging piles to move to the charging location where the target vehicle is located. The target vehicle, i.e., the electric vehicle initiating the charging request, can send its charging demand to the mobile charging station system via methods such as scanning a code or swiping a card. The charging request may include the target vehicle's identity information, parking location information, and the required charging power, but this embodiment does not impose specific limitations on these details. The required charging power can be reported by the vehicle's BMS (Battery Management System).

[0029] The target charging station refers to the mobile charging station among the various mobile charging stations used to charge the target vehicle. It can be determined based on the location, remaining battery power, current operating status, and expected path information to the target vehicle's charging location (see steps S01-S03 below for details). Alternatively, it can be determined by random selection or directly specified by the user; this embodiment does not impose specific limitations on these methods. The charging location of the target vehicle refers to the specific parking space where the target vehicle is actually parked and ready to receive charging.

[0030] In one feasible implementation, the step of determining the target charging station may include steps S01 to S03: Step S01: Obtain the second scheduling evaluation information for each mobile charging pile. The second scheduling evaluation information includes at least one of the following: location information, remaining power, current working status, and expected path information for the mobile charging pile to move to the charging location. The second scheduling evaluation information is a set of information used to assess the suitability of scheduling each mobile charging pile to the charging location of the target vehicle. The remaining power of the mobile charging pile refers to the remaining power of its energy storage battery at the current moment, used to assess whether the charging pile has sufficient power to complete the current charging task and return to the standby area. The current operating status of the mobile charging pile refers to its current operating status, which may include, but is not limited to, idle (can be scheduled), charging (charging other vehicles, cannot be scheduled), fault (equipment malfunction, cannot be scheduled), and low power (remaining power below a preset threshold, scheduling is not recommended), etc. This embodiment does not specifically limit this. The expected path information for the mobile charging pile to the charging location refers to the navigation path information related to the mobile charging pile moving from its current location to the charging location of the target vehicle, which may include, but is not limited to, path length, estimated travel time, and path congestion conditions, etc. This embodiment does not specifically limit this.

[0031] Step S02: Determine the second availability score of each mobile charging pile based on the second scheduling evaluation information of each mobile charging pile. The second availability score is a rating calculated based on the second scheduling evaluation information, used to quantitatively characterize the suitability of a mobile charging station being scheduled to the target charging location. The higher the second availability score, the more suitable the corresponding mobile charging station is to be selected as the target charging station.

[0032] When determining the second availability score of each mobile charging pile based on the second scheduling evaluation information of each mobile charging pile, in one feasible implementation, multi-dimensional scoring can be performed. Specifically, location information is scored higher the closer the distance, the remaining power is directly scored according to the SOC (State of Charge) percentage (e.g., SOC=80% gets 80 points), the current working status is preset with different scores for idle, charging, fault, and low power (e.g., idle gets 100 points, charging gets 0 points, fault gets -100 points, low power gets 30 points), and the expected route information is scored higher the shorter the expected travel time. Thus, the scores of each dimension can be weighted and summed according to preset weights to obtain the second availability score of each mobile charging pile. In another feasible implementation, a full score and deduction rules can be set for the scheduling evaluation information of each dimension. Thus, the initial score for each charging pile can be set to full score (e.g., 100 points). Then, points are deducted item by item based on the information of each dimension. Specifically, location information can be used to calculate deductions based on the distance between the charging pile and the charging location, with a corresponding deduction for each preset step increase in distance; remaining battery power can be used to calculate deductions based on the SOC percentage, with a proportional deduction when the SOC percentage is lower than a preset battery power benchmark (e.g., 50%); if the current working state is not idle or in a fault state, the full score for that item is directly deducted; estimated route information can be used to calculate deductions based on the estimated travel time, with a corresponding deduction for each preset duration increase in time (e.g., every 1 minute); after deductions for each dimension are completed, a second availability score for each mobile charging pile is obtained. This embodiment does not specifically limit the implementation method of step S02.

[0033] Step S03: Select the mobile charging pile with the highest second availability score among all mobile charging piles as the target charging pile.

[0034] In this embodiment, scheduling evaluation information such as the location, remaining power, current operating status, and expected path information to the charging location of each mobile charging pile is acquired. Based on this information, an availability score is determined for each mobile charging pile, and the charging pile with the highest availability score is selected as the target charging pile from among multiple mobile charging piles. This ensures that the scheduled target charging pile has superior overall conditions in multiple dimensions such as location distance, remaining power, equipment status, and mobility efficiency. This allows the scheduled target charging pile to quickly reach the charging location and have sufficient power to complete the charging task, avoiding charging interruptions due to insufficient power or equipment failure, thus improving the reliability of the charging service and the overall scheduling efficiency.

[0035] This embodiment does not specifically limit the implementation of the step of determining the target charging pile. For example, in other feasible implementations, each mobile charging pile with a second availability score greater than a preset score threshold can be selected as a candidate charging pile. Then, a charging pile can be randomly selected from the candidate charging piles as the target charging pile, or it can be displayed on the user's device so that the user can select the charging pile as the target charging pile.

[0036] For example, a multi-level screening method can be used to determine the target charging pile. For instance, the first level of screening can be based on the current working status: only mobile charging piles that are idle and fault-free are retained as the candidate set, while charging piles that are charging, faulty, or have low battery are excluded; the second level of screening can be based on the remaining battery power: in the candidate set, charging piles with remaining battery power higher than a preset battery power threshold are retained, while charging piles with too low remaining battery power are excluded, ensuring that the scheduled target charging pile has enough power to complete the charging task and return to the standby area; the third level of screening can be based on location information: in the remaining candidate set, the distance between each charging pile and the charging location is calculated, and a preset number (e.g., 3) of the closest charging piles are selected as the preferred set; the fourth level of screening can be based on the expected path information for final selection: in the preferred set, the expected travel time of each charging pile to the charging location is compared, and the mobile charging pile with the shortest expected travel time is selected as the target charging pile.

[0037] For example, to help understand the implementation principle of step S10, please refer to Figure 2 Specifically, after the target vehicle initiates a charging request, an optimization algorithm will determine the most suitable charging station as the target charging station, and the autonomous driving system of the target charging station will be activated. After the autonomous driving system of the target charging station is activated, it is necessary to determine whether the target charging station has moved to the charging location of the target vehicle on time. If so, the target charging station will wait for the target vehicle to connect to the charging port for charging. If not, the target charging station can be controlled to trigger an alarm, so that manual intervention can be carried out to move the target charging station to the charging location of the target vehicle. Then, the control equipment can coordinate the energy storage converter unit to perform charging. After charging is completed, the target charging station is controlled to return to its original position to standby, and can be recharged during off-peak electricity periods.

[0038] Step S20: When it is detected that the current available power of the target charging pile is less than the charging demand power carried by the charging request, the first target number of mobile energy storage converter units to be scheduled is determined based on the power difference between the charging demand power and the current available power, and the first target number of mobile energy storage converter units are selected from each mobile energy storage converter unit as each target energy storage converter unit. The currently available power refers to the sum of the rated power of all the main energy storage converter units in the target charging pile that are in good condition and can be put into normal operation. For example, if the target charging pile is equipped with 3 main energy storage converter units, each with a rated power of 30kW, and one of them is unavailable due to a fault, then the currently available power is 60kW. The charging demand power is the charging power required by the target vehicle at the current moment. The power difference is the difference between the charging demand power and the currently available power. The first target quantity is the specific number that needs to be dispatched from each mobile energy storage converter unit, calculated based on the power difference.

[0039] In one feasible implementation, the step of determining the first target number of mobile energy storage converter units to be scheduled based on the power difference between the charging demand power and the current available power may include steps S21 to S24: Step S21: Determine the ratio between the power difference and the rated power of the mobile energy storage converter unit, and round it up to obtain the candidate quantity; Step S22: Determine the total number of currently available mobile energy storage converter units in each mobile energy storage converter unit; Currently available mobile energy storage converter units refer to those that are in good condition (fault-free), not occupied by other charging piles, and have sufficient remaining power to support their mobility and discharge tasks.

[0040] Step S23: If the number of candidates is less than the difference between the total number and the first preset redundancy number, the number of candidates is taken as the first target number. The first preset redundancy quantity refers to the pre-set number of energy storage converter units that need to be reserved for AC charging. It is used to ensure that when DC fast charging occupies most of the energy storage converter units, the portable charging station still retains at least R energy storage converter units available for AC charging service, thus preventing the AC charging function from being interrupted due to a lack of available energy storage converter units. For example, when R=1, it means that one portable energy storage converter unit is always reserved for AC charging.

[0041] Understandably, if the number of candidate units is less than the difference between the total number and the first preset redundancy number, it indicates that the total number of currently available mobile energy storage converter units is sufficient. Even if the first preset redundancy number of units is reserved to ensure that the AC charging function is not affected, the remaining number of available units is still greater than or equal to the number of candidate units. In this case, the theoretically required number of units to be scheduled can be met, and there is no resource constraint issue. Therefore, the number of candidate units can be directly used as the first target number, and the corresponding number of mobile energy storage converter units can be scheduled according to the actual power gap to completely make up for the power difference.

[0042] Step S24: If the number of candidates is greater than or equal to the difference between the total number and the first preset redundancy number, the difference between the total number and the first preset redundancy number is taken as the first target number.

[0043] Understandably, if the number of candidates is greater than or equal to the difference between the total number and the first preset redundancy number, it indicates that the total number of currently available mobile energy storage converter units is relatively insufficient, and the theoretically required number of candidates has approached or even exceeded the actual schedulable limit. If scheduling is forced according to the number of candidates, it will inevitably occupy the redundant units reserved for AC charging, causing subsequent AC charging functions to malfunction. Therefore, to ensure that the AC charging function is always available, the difference between the total number and the first preset redundancy number can be used as the first target number, i.e., deploying all currently available mobile energy storage converter units, excluding those reserved for redundancy.

[0044] In this embodiment, the theoretically required number of candidate units to be scheduled is determined based on the ratio between the power difference and the rated power of a single mobile energy storage converter unit. This number is then combined with the total number of currently available mobile energy storage converter units and the first preset redundancy reserved for AC charging to determine the final target number to be scheduled. Therefore, when the available power of the target charging station is insufficient, the number of mobile energy storage converter units to be scheduled can be accurately calculated based on the actual power gap, ensuring that the number of scheduled units precisely meets the power compensation requirement, or maximizes the utilization of available resources when resources are limited. This not only avoids resource waste caused by over-scheduling but also avoids insufficient charging power due to under-scheduling. Furthermore, derating charging ensures the continuity of charging services when resources are insufficient, improving the utilization rate and reliability of charging resources.

[0045] This embodiment does not specifically limit the implementation of the step of determining the first target number of mobile energy storage converter units to be scheduled based on the power difference between the charging demand power and the current available power. For example, in other feasible implementations, the first target number can also be determined directly according to a preset mapping relationship between power range and scheduling quantity.

[0046] In one feasible implementation, the step of selecting a first target number of mobile energy storage converter units from each mobile energy storage converter unit as each target energy storage converter unit may include steps S25 to S27: Step S25: Obtain the first scheduling evaluation information of each mobile energy storage converter unit. The first scheduling evaluation information includes at least one of the following: location information, integrity information, remaining power, and expected path information of the mobile energy storage converter unit to the charging location. The first scheduling evaluation information is a set of information used to assess the suitability of scheduling each mobile energy storage converter unit to the charging location of the target charging pile. The integrity information of the mobile energy storage converter unit is used to characterize the equipment status information of the mobile energy storage converter unit, which may include, but is not limited to, whether the mobile energy storage converter unit is intact (whether there are fault alarms), whether the high-voltage connection components are normal, and whether the communication module is online. The expected path information for the mobile energy storage converter unit to move to the charging location refers to the navigation path information related to the mobile energy storage converter unit moving from its current location to the charging location of the target charging pile, which may include, but is not limited to, path length and estimated travel time; this embodiment does not specifically limit this.

[0047] Step S26: Determine the first availability score of each mobile energy storage converter unit based on the first scheduling evaluation information of each mobile energy storage converter unit. The first availability score is a value calculated based on the first scheduling assessment information, used to quantitatively characterize the suitability of a mobile energy storage converter unit to be scheduled to the charging location of the target charging station. The higher the first availability score, the more suitable the corresponding mobile energy storage converter unit is to be selected as the target energy storage converter unit.

[0048] When determining the first availability score of each mobile energy storage converter unit based on the first scheduling evaluation information of each mobile energy storage converter unit, in one feasible implementation, multi-dimensional scoring can be performed. Specifically, location information scores higher the closer the distance, integrity information scores higher the integrity (e.g., full score for perfect condition with no fault alarms; partial score for minor anomalies (e.g., high communication delay but normal function); zero or negative score for serious faults), remaining power is directly scored according to the SOC percentage (e.g., 80 points for SOC=80%), and expected route information scores higher the shorter the expected travel time. Thus, the scores of each dimension can be weighted and summed according to preset weights to obtain the first availability score of each mobile energy storage converter unit. In another feasible implementation, a full score and deduction rules can be set for the scheduling evaluation information of each dimension. Thus, the initial score for each mobile energy storage converter unit can be set to full score (e.g., 100 points). Then, points are deducted item by item based on the information of each dimension. Specifically, location information can be used to calculate deductions based on the distance between the mobile energy storage converter unit and the target charging pile's charging location, with a corresponding deduction for each preset step increase in distance; integrity information can be used to calculate deductions based on the equipment's self-inspection status, with a slight deduction for minor anomalies. A serious fault will result in the direct deduction of full marks for that item; remaining power will be deducted based on the State of Charge (SOC) percentage. If the SOC percentage is below a preset baseline (e.g., 50%), deductions will be made proportionally. If the SOC percentage is below a preset minimum (e.g., 20%), full marks for that item will be directly deducted, or the mobile energy storage converter unit will be marked as unschedulable; estimated route information will be deducted based on the estimated travel time, with points deducted for each additional preset duration (e.g., every minute); after deducting marks for each dimension, a first availability score for each mobile energy storage converter unit will be obtained. This embodiment does not specifically limit the implementation method of step S26.

[0049] Step S27: Select a first target number of mobile energy storage converter units from each mobile energy storage converter unit according to the first availability score in descending order, and use them as each target energy storage converter unit.

[0050] In this embodiment, by acquiring scheduling evaluation information such as the location, integrity, remaining power, and expected path information to the charging location of each mobile energy storage converter unit, and determining the first availability score of each mobile energy storage converter unit based on this information, a first target number of mobile energy storage converter units are selected as target energy storage converter units in descending order of their scores. This ensures that the scheduled target energy storage converter units possess superior comprehensive conditions across multiple dimensions, including location distance, equipment integrity, remaining power, and mobility efficiency. This allows them to quickly reach the target charging station and reliably complete the auxiliary charging task, avoiding situations where the target energy storage converter unit is too far away, leading to excessively long arrival times; malfunctions in the target energy storage converter unit causing docking failures or charging interruptions; or insufficient remaining power in the target energy storage converter unit to support driving and power supply, resulting in task failure. This improves the reliability of the power extension service and the overall scheduling efficiency, thereby further enhancing charging reliability and efficiency.

[0051] This embodiment does not specifically limit the implementation method of selecting a first target number of mobile energy storage converter units from each mobile energy storage converter unit as each target energy storage converter unit. For example, in other feasible implementations, the first target number of mobile energy storage converter units that are closest to each other can be selected directly according to the principle of proximity as each target energy storage converter unit; alternatively, the first target number of mobile energy storage converter units can be randomly selected as each target energy storage converter unit.

[0052] Step S30: Control each target energy storage converter unit to move to the charging position and dock with the target charging pile; When controlling each target energy storage converter unit to move to the charging position and dock with the target charging pile, the docking of each target energy storage converter unit with the target charging pile can be completed in sequence (such as according to distance). In order to shorten the overall docking time, multiple target energy storage converter units can also be controlled to dock with the target charging pile in parallel. This embodiment does not specifically limit the implementation of step S30.

[0053] In one feasible implementation, step S30 may include steps S31 to S34: Step S31: For any target energy storage converter unit, control the target energy storage converter unit to move to the docking station of the target charging pile and mechanically lock it to the docking station. The docking station is a standardized docking position located outside the target charging pile. This position integrates a locking mechanism, DC quick-connect terminals, AC quick-connect terminals, a communication interface, and a high-voltage interlock detection circuit. It is used for the movable energy storage converter unit to dock and for mechanical locking and electrical connection. Mechanical locking refers to the physical fixation between the docking components of the target energy storage converter unit and the docking station of the target charging pile through the locking mechanism, ensuring that the two will not accidentally separate due to external forces or vibrations during charging. Mechanical locking can be achieved through visual guidance or lidar guidance.

[0054] Step S32: After completing the mechanical locking, establish the electrical connection between the target energy storage converter unit and the target charging pile, and perform a communication handshake. Electrical connection refers to the parallel electrical connection of the DC bus and AC bus between the target energy storage converter unit and the target charging pile (see details). Figure 3 This is achieved through quick-connect terminals.

[0055] Communication handshake is the process by which the local controller of the target energy storage converter unit and the EMS (Energy Management System) of the target charging pile establish a communication connection and negotiate protocols and exchange parameters. Through the communication handshake, both parties confirm that the communication link is normal, the transmission protocol is consistent, and exchange equipment information (such as rated power, equipment number, etc.), establishing a communication foundation for subsequent collaborative operation.

[0056] Step S33: After completing the electrical connection and communication handshake, perform high-voltage interlock verification on the connection status between the target energy storage converter unit and the target charging pile. High-voltage interlock verification is a safety detection mechanism that uses a high-voltage interlock detection circuit to confirm whether the high-voltage connector is fully engaged and whether the connection circuit is complete. When the high-voltage connector is not fully engaged or is loose, the interlock circuit is disconnected, and a disconnection signal can be detected to determine that the connection is unreliable, and high-voltage power is not allowed. When the high-voltage connector is fully engaged and the connection is reliable, the interlock circuit is closed, and the connection can be determined to be reliable, allowing high-voltage power to be applied.

[0057] Step S34: After the high-voltage interlock verification is passed, the high-voltage circuit between the target charging pile and the target energy storage converter unit is connected to complete the docking of the target energy storage converter unit and the target charging pile.

[0058] The high-voltage circuit is the electrical path that carries high-voltage DC power between the DC bus of the target charging pile and the DC side of the target energy storage converter unit. It is used to transmit DC power between the two. Opening the high-voltage circuit between the target charging pile and the target energy storage converter unit involves closing the contactor or relay in the high-voltage circuit, allowing the DC bus voltage to be transmitted normally between the target charging pile and the target energy storage converter unit, thus achieving electrical parallel connection between the two.

[0059] In this embodiment, each target energy storage converter unit sequentially moves to the docking station and is mechanically locked, establishes an electrical connection and performs a communication handshake, performs a high-voltage interlock verification, and, after passing the verification, conducts the high-voltage circuit to complete the docking with the target charging pile. This ensures that the connection between each target energy storage converter unit and the target charging pile is reliable at three levels: physical fixation, electrical contact, and communication link. Furthermore, the high-voltage interlock verification performs a safety verification of the connection status before high-voltage power is applied, allowing the high-voltage circuit to conduct only when the connection is complete and reliable. This avoids high-voltage arcing, equipment damage, or safety risks caused by unreliable connections, effectively improving the charging safety and reliability of the portable charging pile system.

[0060] Step S40: Control the target charging pile to charge the target vehicle through the target charging pile's own energy storage converter unit and each target energy storage converter unit.

[0061] The built-in energy storage converter unit is an energy storage converter fixedly installed inside the target charging pile. It is an inherent power module of the target charging pile, used to realize bidirectional power conversion between the energy storage battery and the AC bus / DC bus. In AC charging mode, the built-in energy storage converter unit is responsible for converting the DC power from the energy storage battery into AC power to supply the vehicle's AC charging port; in DC charging mode, the built-in energy storage converter unit and other parallel energy storage converter units work together to directly supply the DC power from the energy storage battery to the vehicle's DC charging port.

[0062] When the target charging pile charges the target vehicle through its own energy storage converter unit and each target energy storage converter unit, the topology involved in this charging process can be exemplarily referred to as follows: Figure 4 Specifically, the target charging station may include an energy storage battery, a main energy storage converter unit (i.e., the main PCS), an AC charging port, a DC charging port, a local energy management system (i.e., the local EMS), and a high-voltage docking station for interfacing with the target energy storage converter unit. The target energy storage converter unit may include an autonomous driving chassis for movement, the energy storage converter unit, a local controller, and high-voltage plug-in terminals for interfacing with the target charging station.

[0063] As can be seen from the above, the technical solution provided in this embodiment, by setting up multiple mobile energy storage converter units in the mobile charging pile system, allows for the dispatch of a corresponding number of mobile energy storage converter units based on the power difference when the current available power of the target charging pile cannot meet the charging needs of the target vehicle. These units are then moved to the charging location to connect with the target charging pile, enabling the target charging pile to supplement its charging with the power of the external mobile energy storage converter units, thus meeting the vehicle's charging needs and achieving on-demand expansion of charging pile power. This effectively ensures charging efficiency and reliability. Simultaneously, each mobile energy storage converter unit, acting as a mobile shared resource pool, can respond to power shortages at different times by being dispatched to the corresponding charging location, thereby effectively improving the overall utilization rate of charging resources.

[0064] In summary, the technical solution provided in this embodiment can improve the utilization rate of charging resources while ensuring charging reliability and charging efficiency.

[0065] Based on the first embodiment described above, a second embodiment of the vehicle charging method of this application is proposed. In the second embodiment, the vehicle charging method may further include steps S401 to S403: Step S401: During the process of controlling the target charging pile to charge the target vehicle through the main energy storage converter unit of the target charging pile and each target energy storage converter unit, the real-time charging power demand of the target vehicle is dynamically acquired. Real-time charging power demand refers to the charging power required at any given moment, calculated and reported by the vehicle's BMS based on factors such as the battery's current state of charge, battery temperature, and battery health during the charging process. Real-time charging power demand changes dynamically with the charging progress. It is typically higher when the battery level is low, gradually decreasing as the battery charges and approaching zero at the end of charging.

[0066] Dynamic acquisition, that is, real-time acquisition, or periodic acquisition at certain time intervals, is not specifically limited in this embodiment.

[0067] Step S402: Determine the required number of energy storage converter units based on the real-time charging power demand. The required quantity is the total number of energy storage converter units needed to meet the charging demand at the current moment, calculated based on the real-time charging power demand.

[0068] When determining the required number of energy storage converter units based on the real-time charging power demand, the ratio between the real-time charging power demand and the rated power of a single energy storage converter unit can be calculated and rounded up to obtain the required number of energy storage converter units. Alternatively, a relational table can be used to pre-record the required number of units corresponding to different charging power demands, thereby allowing for a quick determination of the required number of energy storage converter units by looking up the table. This embodiment does not specifically limit the implementation method of step S402.

[0069] In step S403, if the total number of energy storage converter units in operation of the main body energy storage converter unit of the target charging pile and each target energy storage converter unit is greater than the required number, and the difference between the total number of energy storage converter units in operation and the required number is greater than the second preset redundancy number, then each target energy storage converter unit is controlled to exit the operation state one by one according to the running time of each target energy storage converter unit, until the difference between the total number of energy storage converter units in operation and the required number is less than or equal to the second preset redundancy number.

[0070] Runtime refers to the cumulative operating time of an energy storage converter unit from the moment it enters the operating state (i.e., the high-voltage circuit is turned on) to the current moment. The longer the runtime, the longer the corresponding energy storage converter unit has been operating continuously. When it is necessary to shut down some energy storage converter units, those with longer runtimes can be shut down first to balance the workload of each energy storage converter unit.

[0071] The second preset redundancy quantity is a pre-set threshold for determining whether the total number of energy storage converter units currently in operation is too large relative to the required number. It can be a default value or can be flexibly set by the user according to the actual situation. This embodiment does not make specific limitations on this.

[0072] This embodiment dynamically acquires the real-time charging power demand of the target vehicle during the charging process and determines the required number of energy storage converter units based on this demand. Therefore, when the total number of operating energy storage converter units exceeds the required number and the difference is greater than a second preset redundancy threshold, each target energy storage converter unit is controlled to exit operation one by one according to its operating time. This timely removal of excess external energy storage converter units avoids efficiency reduction and energy waste caused by prolonged low-load operation of too many units. Simultaneously, by prioritizing the exit of target energy storage converter units with longer operating times, the workload of each target energy storage converter unit is balanced, extending the overall lifespan of the equipment. Furthermore, by setting a second preset redundancy threshold as the exit threshold, frequent switching of energy storage converter units due to small power fluctuations is avoided, maintaining the stable operation of the DC and AC buses, thereby further improving charging reliability and stability.

[0073] Based on the first and / or second embodiments described above, a third embodiment of the vehicle charging method of this application is proposed. In the third embodiment, the vehicle charging method may further include steps S404 to S405: Step S404: During the process of controlling the target charging pile to charge the target vehicle through the main energy storage converter unit of the target charging pile and each target energy storage converter unit, if a fault is detected in any target energy storage converter unit, the faulty target energy storage converter unit is controlled to detach from the target charging pile and leave the charging position. The process of detaching the target energy storage converter unit from the target charging pile, that is, releasing the mechanical lock and electrical connection between the target energy storage converter unit and the target charging pile, may include disconnecting the high-voltage circuit, disconnecting the electrical connection between the DC bus and the AC bus, and unlocking the locking mechanism, so that the target energy storage converter unit is physically and electrically separated from the target charging pile.

[0074] Upon leaving the charging location, the faulty target energy storage converter unit autonomously drives away from its current charging location (i.e., the charging area where the target charging pile is located) under the drive of the automatic driving control system. This action aims to ensure that the faulty target energy storage converter unit does not occupy the charging location, freeing up space for subsequent possible maintenance operations or other scheduling tasks.

[0075] Step S405: Control the target charging pile to continue charging the target vehicle through the target charging pile's own energy storage converter unit and other target energy storage converter units that have not failed.

[0076] In this embodiment, if a fault is detected in any target energy storage converter unit during charging, the faulty unit is controlled to detach from the target charging pile and leave the charging location. Simultaneously, the target charging pile continues to charge the target vehicle through its own energy storage converter unit and the remaining unfaulted target energy storage converter units. Therefore, when an externally scheduled mobile energy storage converter unit fails during charging, the faulty unit can be isolated and disconnected in a timely manner, preventing it from affecting the safe operation of the entire parallel system. Meanwhile, the remaining unfaulted energy storage converter units continue to perform the charging task, ensuring that the charging service is not interrupted due to the failure of a single unit, thus guaranteeing the continuity of the charging process and effectively improving the charging reliability and robustness of the mobile charging pile in single-point-of-failure scenarios.

[0077] In addition, in other embodiments, an isolation unit (such as an isolator, switch, etc.) can be provided in the main energy storage converter unit of the portable charging pile. Thus, during the process of controlling the target charging pile to charge the target vehicle through the main energy storage converter unit of the target charging pile and each target energy storage converter unit, if a fault is detected in the main energy storage converter unit of the target charging pile, the faulty main energy storage converter unit can be isolated by the isolation unit. At the same time, the target charging pile can continue to charge the target vehicle through the remaining energy storage converter units that have not failed.

[0078] When a fault occurs in an energy storage converter unit, whether it is the main energy storage converter unit or the mobile energy storage converter unit, the mobile charging pile system can output a fault warning message to inform the user that a fault has occurred in an energy storage converter unit within the mobile charging pile system.

[0079] Based on the first, second, and / or third embodiments described above, a fourth embodiment of the vehicle charging method of this application is proposed. In the fourth embodiment, the portable charging pile may include a plurality of on-board energy storage converter units, wherein the rated power of the on-board energy storage converter units is greater than or equal to the rated power of the AC charging circuit of the portable charging pile; after step S10, the vehicle charging method may further include steps S11 to S14: Step S11: If the current available power is detected to be greater than or equal to the charging power demand, determine the charging type corresponding to the target vehicle; The charging type refers to the charging method requested by the target vehicle, which can include both AC charging and DC charging. AC charging refers to charging the vehicle through its AC charging port, where the onboard charger converts the AC power to DC power before charging the battery. DC charging refers to charging the vehicle directly through its DC charging port, where the charging station supplies DC power directly to the vehicle's battery without going through the onboard charger. The charging type is usually specified by the target vehicle's BMS in the charging request, or automatically identified by the mobile charging station system based on the type of charging gun connected to the target vehicle. This embodiment does not impose specific limitations on this.

[0080] For example, when a portable charging station includes several onboard energy storage converter units, its structural diagram can be referred to... Figure 5 Specifically, the DC input terminals of each main energy storage converter unit (i.e., the main units PCS1~PCSn in the figure) are connected in parallel to the DC output terminals DC+ and DC- of the energy storage battery. The AC output terminals of each main energy storage converter unit are connected in parallel through AC buses L1, L2 and L3 to connect to the AC charging circuit and the DC charging circuit respectively. The AC charging circuit is output to the AC charging port after passing through the AC / AC (Alternating Current to Direct Current) module and AC relay. The DC charging circuit is output to the DC charging port after passing through the AC / DC (Alternating Current to Alternating Current) module and DC contactor.

[0081] Furthermore, the AC / AC module and AC / DC module can also be connected to an auxiliary power supply. The input terminal of the auxiliary power supply is connected to the AC bus, draws power from the AC bus, and converts the AC power into low-voltage DC power through the internal transformer and rectifier before outputting it to the output terminal of the auxiliary power supply.

[0082] The auxiliary power supply powers low-voltage components within the portable charging station, including the control board, communication module, display screen, relay coils, and various sensors, ensuring the normal operation of all low-voltage control units during standby, charging, and scheduling. In practical applications, the auxiliary power supply can be integrated into the AC / AC or AC / DC module to simplify the structure, reduce cable connections, and improve reliability. Therefore, during charging station operation, as long as the AC bus is energized (i.e., the internal energy storage converter unit is operating), the auxiliary power supply can draw power from the AC bus, eliminating the need for an external low-voltage power supply.

[0083] Step S12: When the charging type is AC charging, control the target charging pile and charge the target vehicle through any one of the main energy storage converter units of the target charging pile. When controlling a target charging pile to charge a target vehicle via any one of its individual energy storage converter units, one unit can be randomly selected as the target operating unit. The target charging pile can then be controlled to charge the target vehicle through this target operating unit. Alternatively, the cumulative runtime of all the individual energy storage converter units of the target charging pile can be obtained, and then the unit with the shortest cumulative runtime can be selected as the target operating unit. The target charging pile can then be controlled to charge the target vehicle through this target operating unit. This embodiment does not specifically limit the implementation method of step S12.

[0084] Understandably, when the charging type is AC charging, since the rated power of the portable charging pile's energy storage converter unit is configured to be greater than or equal to the rated power of the AC charging circuit of the portable charging pile, only a single energy storage converter unit is needed to meet the power requirements of AC charging, eliminating the need for multiple energy storage converter units connected in parallel. By controlling any one of the energy storage converter units of the target charging pile to charge the target vehicle, the AC charging power requirements can be met while keeping the remaining energy storage converter units idle or dormant, avoiding the problem of low-load inefficiency caused by multiple energy storage converter units operating in parallel under low AC power conditions.

[0085] Step S13: When the charging type is DC charging, determine the second target number of the main body energy storage converter units required by the target charging pile according to the charging power demand. The second target number is less than or equal to the difference between the total number of main body energy storage converter units of the target charging pile and the first preset redundancy number. The second target quantity refers to the number of energy storage converter units of the target charging pile body that need to be put into operation, calculated based on the charging power demand, under the condition of DC charging and sufficient current available power.

[0086] When determining the second target number of on-board energy storage converter units required for the target charging pile based on the charging power demand, the ratio of the charging power demand to the rated power of the on-board energy storage converter can be calculated and rounded up to obtain the second target number. Alternatively, a relational table can be used to record the number of on-board energy storage converter units corresponding to different power demands for the target charging pile in advance. This allows for a quick determination of the second target number by looking up the table. This embodiment does not specifically limit the implementation method of step S13.

[0087] Step S14: Control the target charging pile and charge the target vehicle through the second target number of the main energy storage converter units in each main energy storage converter unit of the target charging pile.

[0088] Understandably, when the charging type is DC charging, the power demand of DC charging is usually much greater than that of AC charging. A single unit of the energy storage converter is often insufficient to meet the power requirements of DC charging, requiring multiple units to operate in parallel to provide sufficient charging power. Therefore, a second target number of energy storage converter units needs to be determined based on the charging power demand of the target vehicle. Simultaneously, to ensure that AC charging is not completely preempted by DC charging—that is, even when DC charging occupies most of the energy storage converter units—at least a first preset redundancy number of energy storage converter units must be reserved to respond to AC charging requests at any time. This second target number must also be less than or equal to the difference between the total number of energy storage converter units in the target charging pile and the first preset redundancy number. Thus, under high-power DC charging demand, the mobile charging pile system can meet the DC charging power requirements while always reserving necessary power resources for AC charging, avoiding a situation where DC charging completely occupies all energy storage converter units, rendering AC charging unavailable.

[0089] In one feasible implementation, step S13 may include steps S131 to S133: Step S131: Determine the type of AC charging gun connected to the AC charging port of the target charging pile. The type of AC charging gun refers to its electrical interface specification, which can include single-phase AC charging guns and three-phase AC charging guns. Single-phase AC charging guns use a single-phase three-wire system, outputting single-phase 220V AC power, and are commonly used in slow charging scenarios. Three-phase AC charging guns use a three-phase four-wire or three-phase five-wire system, outputting three-phase 380V AC power, and are commonly used in medium-speed charging scenarios. These two types correspond to different AC charging socket interfaces and the input requirements of the vehicle's on-board charger. Different types cannot be used interchangeably; that is, single-phase AC power cannot be output to the vehicle through a three-phase charging gun, and vice versa.

[0090] In determining the type of AC charging gun connected to the AC charging port, one feasible implementation involves the target charging station detecting the type of the currently connected charging gun (using the CP (Control Pilot) and CC (Connection Confirm) signals in the AC charging gun after the AC charging gun is plugged in between the target charging station and the target vehicle. Specifically, different types of AC charging guns (single-phase / three-phase) have different resistance values ​​connected to the CC signal terminal. The target charging station's detection circuit reads the resistance value at the CC terminal and determines the type of the currently connected AC charging gun based on a preset resistance-type mapping relationship. In another feasible implementation, after the AC charging gun is plugged in between the target charging station and the target vehicle and a communication connection is established, the target charging station interacts with the target vehicle's onboard charger through the communication interface in the AC charging gun. The target charging station sends a charging gun type query command to the vehicle, and the onboard charger returns the type information (single-phase or three-phase) of the currently connected charging gun based on the charging gun model and pin definitions it has identified. The target charging station then determines the AC charging gun type based on the information returned by the vehicle. This embodiment does not specifically limit the implementation method of step S131.

[0091] For example, when the AC charging gun connected to the AC charging port is a single-phase AC charging gun, its circuit structure can be represented as follows: Figure 6 When the AC charging port is connected to a three-phase AC charging gun, its circuit structure can be represented as follows: Figure 7 .

[0092] Step S132: When the AC charging gun type is a single-phase AC charging gun, control the target charging pile to output single-phase AC power to the AC charging port through any one of the main energy storage converter units of the target charging pile to charge the target vehicle. Single-phase alternating current is a single-phase alternating current power supply consisting of one phase line and one neutral line.

[0093] Step S133: When the AC charging gun type is a three-phase AC charging gun, control the target charging pile to output three-phase AC power to the AC charging port through any one of the main energy storage converter units of the target charging pile to charge the target vehicle.

[0094] Three-phase alternating current is a three-phase alternating current power supply consisting of three phase lines and one neutral line.

[0095] In this embodiment, the target charging pile first determines the type of AC charging gun connected to its AC charging port. Then, based on the charging gun type, it controls the target charging pile to output AC power of the corresponding number of phases to the AC charging port. Specifically, when the charging gun is a single-phase AC charging gun, it outputs single-phase AC power; when the charging gun is a three-phase AC charging gun, it outputs three-phase AC power. Therefore, the target charging pile is compatible with electric vehicles that support both single-phase and three-phase AC charging interfaces. Regardless of whether the target vehicle's onboard charger is single-phase or three-phase, AC charging can be completed through the same portable charging pile. This eliminates the need to configure different types of charging piles for different vehicle models, improving the charging pile's compatibility and versatility across different vehicle types. It also ensures that the output form of the charging energy accurately matches the vehicle's interface requirements, avoiding the risk of charging abnormalities or equipment damage due to incompatibility between the energy output type and the charging gun type.

[0096] In one feasible implementation, step S14 may include steps S141 to S143: Step S141: If the total number of operating energy storage converter units in each main body energy storage converter unit of the target charging pile is less than the second target number, control each idle energy storage converter unit in the target charging pile to enter the operating state one by one, until the total number of operating energy storage converter units is greater than or equal to the second target number; Step S141 corresponds to Figure 8 (In the figure, N_need is the second target quantity, and N_run is the total number of the main energy storage converter units in operation in each main energy storage converter unit of the target charging pile) judgment node D1 and step S2; An idle energy storage converter unit refers to a standby state where the unit is connected to the DC bus, AC bus, and communication network, and has completed communication handshake with the EMS, but the high-voltage circuit is not activated and it is not participating in power output. An idle energy storage converter unit is ready to be put into operation at any time. Once it receives a start command from the EMS, it can quickly complete synchronization and start power output. This is different from the operating state where the high-voltage circuit is activated and power output is being performed, and also different from the unavailable state due to faults or maintenance.

[0097] Understandably, if the total number of operating energy storage converter units in the target charging pile is less than the second target number, it indicates that the currently operating energy storage converter units are insufficient to meet the DC charging power demand of the target vehicle, necessitating a power supplementation operation. In this case, the idle energy storage converter units in the target charging pile are sequentially brought into operation until the total number of operating units is greater than or equal to the second target number. This ensures that the actual number of operating energy storage converter units meets the power demand, guaranteeing a sufficient supply of DC charging power. It should be noted that this power supplementation process is conducted under the power sufficiency branch. That is, the available power already meets the demand; it is only after determining the second target number that the corresponding number of idle energy storage converter units need to be activated for operation, rather than calling upon external mobile energy storage converter units when power is insufficient.

[0098] Step S142: If the difference between the total number of operating energy storage converter units in each unit of the target charging pile and the second target number is greater than the first preset redundancy number, then control each redundant energy storage converter unit to exit the operating state one by one, until the difference between the total number of operating energy storage converter units and the second target number equals the first preset redundancy number; Step S142 corresponds to Figure 8 (The first preset redundancy quantity in the figure is 1) is the judgment node D2 and step S3; Understandably, if the difference between the total number of operating energy storage converter units in each unit of the target charging pile and the second target number exceeds the first preset redundancy number, it indicates that the number of currently operating energy storage converter units is relatively excessive. This not only meets the current DC charging power demand but also exceeds the redundancy reserved for AC charging. Maintaining the current number of operating units would result in too many energy storage converter units operating inefficiently under light load conditions, wasting energy and occupying energy storage converter unit resources that could otherwise serve AC charging. In this case, controlling each redundant energy storage converter unit to gradually deactivate it, until the difference between the total number of operating energy storage converter units and the second target number equals the first preset redundancy number, allows for the timely removal of excess energy storage converter units while ensuring that DC charging power is met, preventing them from operating under light load for extended periods. Simultaneously, the deactivated energy storage converter units are released into idle status, enabling them to respond to subsequent AC charging demands.

[0099] Step S143: If the difference between the total number of operating energy storage converter units in each of the target charging pile's main energy storage converter units and the second target number is equal to the first preset redundancy number, then the operating energy storage converter units in the target charging pile shall continue to operate; Step S142 corresponds to Figure 8 The judgment node D3 and step S4 in the process.

[0100] After executing steps S141, S412, or S143, if the DC charging control board of the target charging pile detects a signal indicating that the vehicle charging is complete (corresponding to...) Figure 8 If the judgment node D4 is selected, then each of the main energy storage converter units in the target charging pile that is in operation will be taken out of operation one by one (corresponding to...). Figure 8 Step S5 in the process.

[0101] Understandably, if the difference between the total number of operating energy storage converter units in each unit of the target charging pile and the second target number equals the first preset redundancy number, it indicates that the number of currently operating energy storage converter units is ideal. This satisfies the power requirements of DC charging while precisely reserving the first preset redundancy number of units as a resource reserve for AC charging. Increasing the number of operating units would result in excessive redundancy and energy waste; decreasing the number would result in insufficient redundancy and potentially affect the timely response of AC charging. Therefore, maintaining the operating energy storage converter units in the target charging pile without switching them on or off avoids the impact on the DC and AC buses caused by frequent switching due to small power fluctuations, ensuring stable system operation.

[0102] In this embodiment, differentiated switching control is performed based on the relationship between the total number of currently operating energy storage converter units and the second target number. Specifically, when the number of operating units is less than the second target number, units are added one by one; when the difference between the number of operating units and the second target number is greater than the first preset redundancy number, units are deactivated one by one; and when the difference between the number of operating units and the second target number is equal to the first preset redundancy number, the current state remains unchanged. Thus, in DC charging mode, the number of operating energy storage converter units can be dynamically adjusted according to changes in real-time power demand, ensuring that the number of operating energy storage converter units always matches the demand power. When demand increases, units are added in time to ensure power supply; when demand decreases, units are reduced in time to avoid inefficiency under light load; and the redundancy state is maintained when the ideal redundancy state is reached to avoid the impact of frequent switching on the DC bus and AC bus. At the same time, by always maintaining the first preset redundancy number of energy storage converter units, the AC charging function is not fully occupied, thereby simultaneously taking into account power response speed, charging efficiency, and the integrity of charging service.

[0103] This embodiment does not specifically limit the implementation of step S14. For example, in other feasible implementations, a batch scheduling strategy based on the demand power change trend can be adopted. Specifically, when it is detected that the real-time charging demand power continuously increases within a preset time period (e.g., the rate of increase exceeds a preset threshold for 5 consecutive seconds), M main body energy storage converter units are put into operation at once, where M is the difference between the second target number and the total number of main body energy storage converter units currently in operation; when it is detected that the real-time charging demand power continuously decreases within a preset time period, and the difference between the total number of main body energy storage converter units currently in operation and the second target number is greater than the sum of the first preset redundancy number and the preset buffer number, N main body energy storage converter units are deactivated at once, where N is the difference between the current number and the second target number minus the sum of the first preset redundancy number and the preset buffer number.

[0104] Based on the above, in this embodiment, when the current available power of the target charging pile can meet the charging needs of the target vehicle, the charging type corresponding to the target vehicle is first determined. If it is AC charging, any one of the main energy storage converter units of the target charging pile is controlled to charge the target vehicle. Since the rated power of the main energy storage converter unit is greater than or equal to the rated power of the AC charging circuit, a single unit can meet the AC charging needs, avoiding the light load inefficiency caused by multiple energy storage converter units operating in parallel under AC low power conditions. If it is DC charging, the second target number of main energy storage converter units to be put into operation is determined according to the charging power demand, and the second target number does not exceed the difference between the total number of main energy storage converter units and the first preset redundancy number. The second target number of main energy storage converter units are controlled to operate in parallel to meet the DC high power charging demand. Therefore, this embodiment realizes the adaptive scheduling of the main energy storage converter unit according to different charging types when the power is sufficient. Specifically, during AC charging, only a single main energy storage converter unit is activated to improve the efficiency of light-load operation. During DC charging, multiple main energy storage converter units are activated in parallel to meet the high power demand. At the same time, during DC charging, at least a first preset redundant number of main energy storage converter units are always reserved for AC charging to ensure that the AC charging function is not interrupted due to DC fast charging occupying all energy storage converter units, thus taking into account the charging efficiency under all operating conditions.

[0105] For example, to help understand the implementation process of the vehicle charging method formed by combining the above embodiments, please refer to... Figure 9 , specifically: After the target vehicle initiates a charging request, the charging demand power carried in the charging request is obtained and uploaded to the dispatch platform to calculate the current available power of the target charging pile; then the current available power of the target charging pile is compared with the charging demand power to determine whether the target charging pile needs the assistance of a mobile energy storage converter unit. If the target charging station requires the assistance of a portable energy storage converter unit, the first target number of portable energy storage converter units to be dispatched is determined, and the optimal first target number of portable energy storage converter units is matched, moved to the docking station of the target charging station, and mechanically locked to the docking station. After the mechanical locking is completed, an electrical connection is established between the target energy storage converter unit and the target charging station, and a communication handshake is performed. After the electrical connection and communication handshake are completed, a high-voltage interlock verification is performed on the connection status between the target energy storage converter unit and the target charging station. After the high-voltage interlock verification is passed, the high-voltage circuit between the target charging station and the target energy storage converter unit is connected to complete the docking of the target energy storage converter unit and the target charging station. After that, the target charging station can be controlled to charge the target vehicle through the target charging station's own energy storage converter unit and each target energy storage converter unit. During the charging process, it is also possible to detect whether the target energy storage converter unit (i.e., the movable energy storage converter unit that assists the target charging pile) has malfunctioned. If so, the malfunctioning target energy storage converter unit is controlled to detach from the target charging pile and leave the charging position, and the whole unit is derated. If not, it is detected whether the charging is completed.

[0106] If the target charging station does not require the assistance of a portable energy storage converter unit, the target vehicle will be charged directly through the onboard energy storage converter unit in the target charging station, and the charging process will be checked to see if it is complete.

[0107] Upon detecting that charging is complete, the system controls each energy storage converter unit in operation to exit the operation state one by one (the main energy storage converter unit exits the operation state directly, while the target energy storage converter unit detaches from the target charging pile, leaves the charging position, and returns to its original position).

[0108] It should be noted that this example is only for the purpose of assisting in understanding this application and does not constitute a limitation on the vehicle charging method of this application. Other technical solutions based on this concept are all within the protection scope of this application.

[0109] This application also provides a control device, which may include: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the vehicle charging method in the above embodiments.

[0110] The following is for reference. Figure 10 It shows a schematic diagram of the structure of a control device suitable for implementing the embodiments of this application. Figure 10 The control device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0111] like Figure 10 As shown, the control device may include a processing unit 101 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in read-only memory 102 or a program loaded from storage device 103 into random access memory 104. Random access memory 104 also stores various programs and data required for the operation of the control device. The processing unit 101, read-only memory 102, and random access memory 104 are interconnected via bus 105. Input / output interface 106 is also connected to bus 105. Typically, the following systems can be connected to input / output interface 106: input devices 107 including, for example, touch screens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 108 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 103 including, for example, magnetic tapes, hard disks, etc.; and communication devices 109. Communication device 109 allows the control device to communicate wirelessly or wiredly with other devices to exchange data. Although the diagram shows control equipment with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented alternatively.

[0112] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 103, or installed from read-only memory 102. When the computer program is executed by processing device 101, it performs the functions defined in the methods of the embodiments of this application.

[0113] The control device provided in this application, employing the vehicle charging method described in the above embodiments, can improve the utilization rate of charging resources while ensuring charging reliability and efficiency. Compared with the prior art, the beneficial effects of the control device provided in this application are the same as those of the vehicle charging method provided in the above embodiments, and other technical features of the control device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0114] It should be understood that various parts of the embodiments of this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0115] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the above claims.

[0116] This application embodiment also provides a mobile charging pile system, which may include: Several portable charging stations are available; please refer to [link / reference]. Figure 11 A portable charging station may include a DC charging port, at least one AC charging port, and at least one on-board energy storage converter unit. Several portable energy storage converter units; The control device in the above embodiments is communicatively connected to each mobile charging pile and each mobile energy storage converter unit.

[0117] In one feasible implementation, the communication architecture of the mobile charging pile system can be represented as follows: Figure 12 Specifically, a mobile charging pile system can be divided into a scheduling layer, a control layer, and an equipment layer. The scheduling platform is located in the scheduling layer, the control equipment is located in the control layer, and the mobile charging pile and mobile energy storage converter unit are located in the equipment layer. The scheduling platform and control equipment can communicate via TCP / IP (Transmission Control Protocol / Internet Protocol). The control module can use Ethernet communication to communicate with all energy storage converter units (whether local or mobile). The control module can use RS485 communication to communicate with the DC charging control board and AC charging control board in the mobile charging pile. The control module can use CAN (Controller Area Network) communication to communicate with the AC / DC module in the mobile charging pile (for details, please refer to...). Figure 13 ).

[0118] In one feasible implementation, the portable charging station may also include an auxiliary power source; The auxiliary power supply is integrated inside the AC / AC module and / or AC / DC module of the portable charging pile, or the auxiliary power supply is independently set outside the AC / AC module and AC / DC module, and the auxiliary power supply is connected to the AC bus of the portable charging pile. The auxiliary power supply is used to power the low-voltage components in the portable charging station.

[0119] When the auxiliary power supply is integrated inside the AC / AC module and / or AC / DC module of the portable charging station, the circuit structure of the portable charging station can be exemplarily represented as follows: Figure 14 In this approach, the auxiliary power supply shares an input interface with the AC / AC module and / or AC / DC module. Power is drawn from the AC bus and converted to low-voltage DC by an integrated transformer and rectifier circuit within the module. This DC power directly supplies power to low-voltage components within the charging pile, such as the control board, communication module, relay coils, and sensors. This integrated solution reduces the number of independent power modules and cable connections within the charging pile, resulting in a more compact structure, improved power density and reliability, and reduced assembly complexity.

[0120] When the auxiliary power supply is integrated externally and independently located outside the AC / AC module and AC / DC module, the circuit structure of the portable charging station can be exemplarily represented as follows: Figure 5 In this approach, the auxiliary power supply functions as an independent power module. Its input terminal draws power from the AC bus, which is then converted into low-voltage DC power via an internal transformer and rectifier circuit. This DC power is then supplied to the various low-voltage devices within the charging pile through an independent output terminal. This independent design physically and electrically separates the auxiliary power supply from the AC / AC module and AC / DC module, facilitating individual maintenance and replacement. Furthermore, it allows for independent repair in the event of an auxiliary power supply failure without affecting the normal operation of the main power module.

[0121] Compared with the prior art, the beneficial effects of the mobile charging pile system provided in this application embodiment are the same as the beneficial effects of the control device provided in the above embodiments, and other technical features of the mobile charging pile system are the same as the features disclosed in the methods of the above embodiments, and will not be repeated here.

[0122] This application also provides a computer-readable storage medium storing a computer program that can run on a processor, the computer program being used to execute the vehicle charging method in the above embodiments.

[0123] The computer-readable storage medium provided in this application embodiment may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0124] The aforementioned computer-readable storage medium may be included in the control device; or it may exist independently and not assembled into the control device.

[0125] The aforementioned computer-readable storage medium carries one or more programs. When the aforementioned one or more programs are executed by the control device, the control device causes the following: upon receiving a charging request from a target vehicle, it controls the target charging pile among the mobile charging piles to move to the charging location where the target vehicle is located; upon detecting that the current available power of the target charging pile is less than the charging demand power carried by the charging request, it determines a first target number of mobile energy storage converter units to be scheduled based on the power difference between the charging demand power and the current available power, and selects the first target number of mobile energy storage converter units from each mobile energy storage converter unit as each target energy storage converter unit; it controls each target energy storage converter unit to move to the charging location and dock with the target charging pile; and it controls the target charging pile to charge the target vehicle through the energy storage converter unit of the target charging pile itself and each target energy storage converter unit.

[0126] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0127] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0128] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0129] The computer-readable storage medium provided in this application embodiment stores computer-readable program instructions for executing the above-described vehicle charging method, which can improve the utilization rate of charging resources while ensuring charging reliability and charging efficiency. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application embodiment are the same as the beneficial effects of the vehicle charging method provided in the above embodiments, and will not be repeated here.

[0130] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the vehicle charging method described above.

[0131] The computer program product provided in this application can improve the utilization rate of charging resources while ensuring charging reliability and efficiency. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the vehicle charging method provided in the above embodiments, and will not be repeated here.

[0132] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A vehicle charging method, characterized in that, It is applied to a mobile charging pile system, which includes several mobile charging piles and several mobile energy storage converter units. The method includes: Upon receiving a charging request from a target vehicle, the system controls the target charging station among the mobile charging stations to move to the charging location where the target vehicle is located. If the current available power of the target charging pile is less than the charging demand power carried by the charging request, the first target number of mobile energy storage converter units to be scheduled is determined based on the power difference between the charging demand power and the current available power, and the first target number of mobile energy storage converter units are selected from each of the mobile energy storage converter units as each target energy storage converter unit. Control each of the target energy storage converter units to move to the charging position and dock with the target charging pile; The target charging pile is controlled to charge the target vehicle through its own energy storage converter unit and each of the target energy storage converter units.

2. The method as described in claim 1, characterized in that, The step of determining the first target number of mobile energy storage converter units to be scheduled based on the power difference between the charging demand power and the current available power includes: Determine the ratio between the power difference and the rated power of the portable energy storage converter unit, and round it up to obtain the candidate quantity; Determine the total number of currently available mobile energy storage converter units in each of the aforementioned mobile energy storage converter units; If the number of candidates is less than the difference between the total number and the first preset redundancy number, the number of candidates shall be taken as the first target number. If the number of candidates is greater than or equal to the difference between the total number and the first preset redundancy number, the difference between the total number and the first preset redundancy number shall be taken as the first target number.

3. The method as described in claim 1, characterized in that, The step of selecting the first target number of mobile energy storage converter units from each of the mobile energy storage converter units as each target energy storage converter unit includes: Obtain first scheduling evaluation information for each of the mobile energy storage converter units, wherein the first scheduling evaluation information includes at least one of the following: location information, integrity information, remaining power of the mobile energy storage converter unit, and expected path information for the mobile energy storage converter unit to move to the charging location; Based on the first scheduling evaluation information of each of the mobile energy storage converter units, a first availability score is determined for each of the mobile energy storage converter units. Based on the first availability score in descending order, select the first target number of mobile energy storage converter units from each of the mobile energy storage converter units as each of the target energy storage converter units.

4. The method as described in claim 1, characterized in that, The step of controlling each of the target energy storage converter units to move to the charging position and dock with the target charging pile includes: For any of the target energy storage converter units, control the target energy storage converter unit to move to the docking station of the target charging pile, and mechanically lock it to the docking station; After mechanical locking is completed, an electrical connection is established between the target energy storage converter unit and the target charging pile, and a communication handshake is performed. After completing the electrical connection and communication handshake, a high-voltage interlock verification is performed on the connection status between the target energy storage converter unit and the target charging pile. After the high-voltage interlock verification is passed, the high-voltage circuit between the target charging pile and the target energy storage converter unit is connected to complete the docking of the target energy storage converter unit and the target charging pile.

5. The method as described in claim 1, characterized in that, Before the step of controlling the target charging pile in each of the mobile charging piles to move to the charging location of the target vehicle, the method further includes: Obtain second scheduling evaluation information for each of the mobile charging piles, wherein the second scheduling evaluation information includes at least one of the following: location information, remaining power, current working status, and expected path information of the mobile charging pile moving to the charging location; Based on the second scheduling evaluation information of each of the mobile charging piles, a second availability score for each of the mobile charging piles is determined; The mobile charging pile with the highest second availability score among all the mobile charging piles is selected as the target charging pile.

6. The method as described in claim 1, characterized in that, The method further includes: During the process of controlling the target charging pile to charge the target vehicle through the main energy storage converter unit of the target charging pile and each of the target energy storage converter units, the real-time charging power demand of the target vehicle is dynamically acquired. Based on the real-time charging power demand, determine the required number of energy storage converter units. If, among the main energy storage converter unit of the target charging pile and each target energy storage converter unit, the total number of energy storage converter units in operation is greater than the required number, and the difference between the total number of energy storage converter units in operation and the required number is greater than the second preset redundancy number, then each target energy storage converter unit is controlled to exit the operation state one by one according to the operating time of each target energy storage converter unit, until the difference between the total number of energy storage converter units in operation and the required number is less than or equal to the second preset redundancy number.

7. The method as described in claim 1, characterized in that, The method further includes: During the process of controlling the target charging pile to charge the target vehicle through the main energy storage converter unit of the target charging pile and each of the target energy storage converter units, if a fault is detected in any of the target energy storage converter units, the faulty target energy storage converter unit is controlled to detach from the target charging pile and leave the charging position. The target charging pile is controlled to continue charging the target vehicle through its own energy storage converter unit and other target energy storage converter units that have not failed.

8. The method according to any one of claims 1 to 7, characterized in that, The portable charging pile includes several main body energy storage converter units, and the rated power of the main body energy storage converter unit is greater than or equal to the rated power of the AC charging circuit of the portable charging pile. After the step of controlling the target charging pile in each of the mobile charging piles to move to the charging location of the target vehicle, the method further includes: If the current available power is detected to be greater than or equal to the charging power demand, the charging type corresponding to the target vehicle is determined; When the charging type is AC charging, the target charging pile is controlled to charge the target vehicle through any one of the main energy storage converter units of the target charging pile. When the charging type is DC charging, a second target number of the main body energy storage converter units required by the target charging pile is determined based on the charging power demand. The second target number is less than or equal to the difference between the total number of main body energy storage converter units of the target charging pile and the first preset redundancy number. The target charging pile is controlled to charge the target vehicle through the second target number of the main energy storage converter units in each main energy storage converter unit of the target charging pile.

9. The method as described in claim 8, characterized in that, The step of controlling the target charging pile and charging the target vehicle through any one of the energy storage converter units of the target charging pile includes: Determine the type of AC charging gun connected to the AC charging port of the target charging pile; When the AC charging gun is a single-phase AC charging gun, the target charging pile is controlled to output single-phase AC power to the AC charging port through any one of the main energy storage converter units of the target charging pile to charge the target vehicle. When the AC charging gun is a three-phase AC charging gun, the target charging pile is controlled to output three-phase AC power to the AC charging port through any one of the main energy storage converter units of the target charging pile, so as to charge the target vehicle.

10. The method as described in claim 8, characterized in that, The step of controlling the target charging pile and charging the target vehicle through the second target number of energy storage converter units in each of the target charging pile's energy storage converter units includes: If the total number of operating units in each of the target charging pile's main energy storage converter units is less than the second target number, then each idle unit in the target charging pile is controlled to enter the operating state one by one until the total number of operating units is greater than or equal to the second target number. If the difference between the total number of operating energy storage converter units in each of the target charging pile and the second target number is greater than the first preset redundancy number, then each redundant energy storage converter unit is controlled to exit the operating state one by one until the difference between the total number of operating energy storage converter units and the second target number is equal to the first preset redundancy number. If the difference between the total number of operating energy storage converter units in each of the target charging pile and the second target number is equal to the first preset redundancy number, then each operating energy storage converter unit in the target charging pile shall continue to operate.

11. A mobile charging pile system, characterized in that, The mobile charging pile system includes: Several portable charging piles, each portable charging pile including a DC charging port, at least one AC charging port, and at least one on-board energy storage converter unit; Several portable energy storage converter units; A control device for performing the vehicle charging method as described in any one of claims 1 to 10, wherein the control device is communicatively connected to each of the mobile charging piles and each of the mobile energy storage converter units.

12. The mobile charging pile system as described in claim 11, characterized in that, The portable charging station also includes an auxiliary power supply; The auxiliary power supply is integrated inside the AC / AC module and / or AC / DC module of the portable charging pile, or the auxiliary power supply is independently set outside the AC / AC module and the AC / DC module, and the auxiliary power supply is connected to the AC bus of the portable charging pile. The auxiliary power supply is used to power the low-voltage components in the portable charging station.

Images