Charging pile control method and device and charging pile

Abstract

The invention discloses a charging pile control method and device and a charging pile, and belongs to the field of new energy charging piles, and the charging pile control method and device comprises the steps that charging demand information of multiple to-be-charged vehicles connected with multiple charging guns is acquired, and the charging demand information at least comprises the battery charge state, the battery capacity and the charging duration preset by a user; according to the charging demand information, the charging priority and the demand power of each vehicle are calculated; generating a power distribution strategy according to the charging priority and the required power, and dynamically distributing a plurality of power modules in the charging pile to a plurality of charging guns; controlling the on-off state of the power distribution matrix according to a power distribution strategy so as to establish electric connection between the power supply module and the charging gun; in the charging process, the actual charging power and the battery state of each vehicle are monitored in real time, the on-off state of the power distribution matrix is dynamically adjusted according to the monitoring result, the power modules are redistributed, and the charging efficiency is maximized on the premise that the requirement for charging multiple vehicles at the same time is met.

Description

Technical Field

[0001] This invention relates to the field of new energy charging piles, specifically to a control method, control device, and charging pile for a charging pile. Background Technology

[0002] Currently, most traditional electric vehicle charging stations on the market use a single charging plug design, which can only provide charging services for one electric vehicle at a time. When a vehicle finishes charging, if the user does not unplug the charging gun and move the vehicle in time, the charging station will be idle for a long time and will not be able to automatically charge the waiting vehicles. This results in a low utilization rate of the charging station. During peak hours, users often have to search repeatedly to find an available charging station, which affects the user's charging experience.

[0003] Existing technologies propose a service mode that uses multiple charging plugs to automatically switch to charging the next vehicle once one is fully charged. However, when multiple vehicles connect to the same charging station simultaneously, the limited total output power of the charging station means that simple average power distribution or a first-come, first-served fixed distribution method can lead to slow charging for some vehicles that urgently need fast charging, or a mismatch between power distribution and actual demand. This fails to meet the differentiated charging needs of different vehicles due to variations in battery capacity, state of charge, and user requirements. Furthermore, while existing technologies have solutions for reusing power processing modules using combined switching components, these solutions only address hardware-level reuse and do not address how to adjust the power module allocation strategy in real time based on real-time charging needs, battery status changes, and user-preset charging durations to achieve a balance between maximizing charging efficiency and optimizing equipment utilization. Summary of the Invention

[0004] The purpose of this invention is to propose a control method, control device, and charging pile for charging piles, aiming to solve the problem that the power distribution of existing multi-gun charging piles is fixed and lacks dynamic adjustment capability based on real-time demand.

[0005] In a first aspect, the present invention provides a control method for a charging pile, comprising: S100: Obtain charging demand information of multiple vehicles to be charged connected to multiple charging guns, wherein the charging demand information includes at least the battery state of charge, battery capacity and user-preset charging time. S200: Calculate the charging priority and required power for each vehicle based on the charging demand information; S300: Based on the charging priority and required power, generate a power allocation strategy to dynamically allocate multiple power modules in the charging pile to the multiple charging guns; S400: According to the power allocation strategy, control the on / off state of the power allocation matrix to establish an electrical connection between the power module and the charging gun; S500: During the charging process, the actual charging power and battery status of each vehicle are monitored in real time, and the on / off state of the power distribution matrix is ​​dynamically adjusted according to the monitoring results to redistribute the power modules.

[0006] Preferably, the remaining charging capacity of each vehicle is calculated based on the battery state of charge and battery capacity of each vehicle. The basic power requirement for each vehicle is calculated based on the remaining charging capacity of each vehicle and the user's preset charging time. The charging priority of each vehicle is determined based on the ratio of the user-preset charging time to the standard charging time, with a smaller ratio indicating a higher priority. The final power requirement for each vehicle is determined based on the charging priority and the basic power requirement.

[0007] Preferably, all vehicles to be charged are sorted in descending order of charging priority; According to the aforementioned order, power modules are allocated to each vehicle in turn until all power modules have been allocated or the power requirements of all vehicles have been met. If the sum of the power requirements of all vehicles is less than or equal to the total power of all power modules, then the power is allocated in full according to the power requirements of each vehicle. If the sum of the power requirements of all vehicles exceeds the total power of all power modules, the power requirements of high-priority vehicles will be met first, and the remaining power will be allocated to low-priority vehicles proportionally.

[0008] Preferably, the step of allocating the remaining power proportionally to low-priority vehicles includes: Determine the ratio of remaining power to the sum of the power demands of all low-priority vehicles; Based on the ratio, the allocated power of each low-priority vehicle is reduced proportionally. The allocated power is not lower than the minimum charging power threshold for each vehicle.

[0009] Preferably, when the actual charging power of a vehicle is detected to drop below a preset threshold of its allocated power, it is determined whether the vehicle has entered the constant voltage charging stage or the charging is complete. If the vehicle enters the constant voltage charging stage, it releases some of its allocated power modules and redistributes the released power modules to other vehicles that are still in the constant current charging stage. If the vehicle is fully charged, all its allocated power modules are released and redistributed to other vehicles that have not yet finished charging.

[0010] Secondly, the present invention also provides a control device for a charging pile, comprising: The information acquisition module is used to acquire the charging demand information of multiple vehicles to be charged connected to multiple charging guns. The charging demand information includes at least the battery state of charge, battery capacity, and user-preset charging time. The power calculation module is used to calculate the charging priority and required power of each vehicle based on the charging demand information. The strategy generation module is used to generate a power allocation strategy based on the charging priority and required power, and dynamically allocate multiple power modules in the charging pile to the multiple charging guns. The instruction execution module is used to control the on / off state of the power allocation matrix according to the power allocation strategy, so as to establish an electrical connection between the power module and the charging gun. The dynamic adjustment module is used to monitor the actual charging power and battery status of each vehicle in real time during the charging process, and dynamically adjust the on / off state of the power distribution matrix according to the monitoring results to redistribute the power modules. The power calculation module includes: The remaining power calculation unit is used to calculate the remaining charging power of each vehicle based on the battery state of charge and battery capacity of each vehicle. The basic power calculation unit is used to calculate the basic power requirement of each vehicle based on the remaining charging capacity of each vehicle and the user's preset charging time. The priority determination unit is used to determine the charging priority of each vehicle based on the ratio of the user-preset charging time to the standard charging time, wherein the smaller the ratio, the higher the priority. The final power determination unit is used to determine the final power demand of each vehicle based on the charging priority and the basic power demand.

[0011] Preferably, the strategy generation module includes: The sorting unit is used to sort all vehicles waiting to be charged from high to low charging priority. The allocation unit is used to allocate power modules to each vehicle in the order described above, until all power modules are allocated or the power requirements of all vehicles are met. The full allocation unit is used to allocate power according to the power demand of each vehicle when the sum of the power demand of all vehicles is less than or equal to the total power of all power modules. The proportional allocation unit is used to prioritize the power demand of high-priority vehicles when the sum of the power demand of all vehicles exceeds the total power of all power modules, and to allocate the remaining power proportionally to low-priority vehicles.

[0012] Preferably, the proportional allocation unit is specifically used for: Determine the ratio of remaining power to the sum of the power demands of all low-priority vehicles; Based on the ratio, the allocated power of each low-priority vehicle is reduced proportionally. The allocated power is not lower than the minimum charging power threshold for each vehicle.

[0013] Preferably, the dynamic adjustment module includes: The status judgment unit is used to determine whether a vehicle has entered the constant voltage charging stage or the charging completion state when the actual charging power of a vehicle is detected to drop below a preset threshold of its allocated power. The first release unit is used to release part of the allocated power modules when the vehicle enters the constant voltage charging stage, and redistribute the released power modules to other vehicles that are still in the constant current charging stage. The second release unit is used to release all of the allocated power modules of the vehicle when the vehicle has finished charging, and to redistribute the released power modules to other vehicles that have not yet finished charging.

[0014] Thirdly, the present invention also provides a charging pile, comprising: pile body; Multiple charging guns are installed on the pile body for connecting multiple vehicles to be charged; Multiple power modules are installed inside the charging pile to provide charging power; A power distribution matrix is ​​set between the plurality of power modules and the plurality of charging guns, and is used to switch the connection state between the power modules and the charging guns; The detection module is used to acquire the charging demand information of each vehicle to be charged. The charging demand information includes at least the battery state of charge, battery capacity, and user-preset charging time. The control module is electrically connected to the detection module and the power distribution matrix respectively. The control module includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, it implements the steps of a control method for a charging pile.

[0015] Compared with existing technologies, it has the following beneficial effects: This invention provides a control method for charging piles. By acquiring charging demand information from multiple vehicles waiting to be charged, and calculating the charging priority and required power for each vehicle based on this information, a power allocation strategy is generated to dynamically allocate multiple power modules within the charging pile to multiple charging guns. During the charging process, the actual charging power and battery status of the vehicles are monitored in real time, and the reallocation of power modules is dynamically adjusted. This achieves intelligent allocation of limited power modules, enabling vehicles urgently needing fast charging to receive higher allocated power, avoiding the problem of some vehicles charging too slowly due to fixed power allocation. Simultaneously, this method continuously monitors the vehicle status and adjusts the allocation strategy in real time during charging, adapting to changes in battery status during vehicle charging. Power modules are promptly released and reallocated when the vehicle enters the constant voltage charging stage or after charging is completed, ensuring that the power modules are always in optimal utilization. This method maximizes charging efficiency and balances equipment utilization while meeting the simultaneous charging needs of multiple vehicles, improving the overall service capabilities of the charging pile and the user experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic flowchart of a control method for a charging pile according to an embodiment of the present invention; Figure 2 This is a structural diagram of the control device module of a charging pile according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the data flow and call relationship of a charging pile according to an embodiment of the present invention. Detailed Implementation

[0018] To better understand the structure, functional features, and advantages of the present invention, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings: like Figure 1 , Figure 2 and Figure 3As shown, the present invention provides a control method for a charging pile, comprising: S100: acquiring charging demand information of multiple vehicles connected to multiple charging guns, the charging demand information including at least battery state of charge, battery capacity, and user-preset charging duration; S200: calculating the charging priority and required power of each vehicle based on the charging demand information; S300: generating a power allocation strategy based on the charging priority and required power, and dynamically allocating multiple power modules in the charging pile to multiple charging guns; S400: controlling the on / off state of the power allocation matrix according to the power allocation strategy to establish an electrical connection between the power modules and the charging guns; S500: during the charging process, monitoring the actual charging power and battery status of each vehicle in real time, and dynamically adjusting the on / off state of the power allocation matrix according to the monitoring results to reallocate the power modules.

[0019] According to the solution of the present invention, when multiple vehicles to be charged are connected to multiple charging guns of a charging pile at the same time, the control system first obtains the charging demand information of each vehicle to be charged. This information includes at least the vehicle's battery state of charge (i.e., the current remaining percentage of power), battery capacity (i.e., the total capacity of the battery), and the user's preset charging time (i.e., how long the user expects to complete charging). This information can be obtained in real time through the communication protocol between the charging pile and the vehicle (such as CAN bus or PLC communication).

[0020] Based on the acquired charging demand information, the control system calculates the charging priority and required power for each vehicle. During the calculation process, the control system calculates the remaining charging capacity required by each vehicle based on its battery state of charge and battery capacity. Then, combined with the user's preset charging time, it calculates the basic power required by the vehicle to meet the user's time needs. At the same time, the control system determines the charging priority of each vehicle based on the ratio of the user's preset charging time to the standard charging time (e.g., the time required for a normal full charge). The smaller the ratio, the more urgent the user's reserved charging time, and the higher the charging priority of the vehicle. Finally, combining the charging priority and the basic power required, the final power required for each vehicle is determined, so that users who urgently need to charge can be given priority.

[0021] The control system generates a power allocation strategy based on the charging priority and power demand of each vehicle, dynamically allocating multiple power modules in the charging pile to multiple charging guns. Priority is given to meeting the power demand of high-priority vehicles, ensuring that vehicles that urgently need charging can obtain sufficient power supply. For the remaining low-priority vehicles, the remaining power modules are allocated proportionally, so that each vehicle can obtain the most reasonable charging service possible within the limited total power.

[0022] The control system controls the on / off state of the power distribution matrix according to the generated power distribution strategy. The power distribution matrix consists of multiple controllable switches (such as relays or contactors) connected between the power module and the charging gun. The control system establishes an electrical connection between the power module and the charging gun by closing or opening the corresponding switches, accurately connecting the allocated power module to the corresponding charging gun, and starting to charge the vehicle. During this process, the on / off state of the power distribution matrix corresponds to the power distribution strategy, ensuring that the actual power obtained by each vehicle is consistent with the distribution plan.

[0023] During the charging process, the control system monitors the actual charging power and battery status of each vehicle in real time. As charging progresses, the vehicle's battery status changes, such as transitioning from a constant current charging stage to a constant voltage charging stage. At this time, the vehicle's actual charging power will naturally decrease, or a vehicle may finish charging early and its charging gun may be unplugged. Based on these monitoring results, the control system dynamically adjusts the on / off state of the power distribution matrix and reallocates power modules. For example, when a vehicle enters the constant voltage charging stage, it no longer needs all the allocated power, and the control system will release some power modules and reallocate them to other vehicles still in the constant current charging stage. When a vehicle finishes charging, all the power modules it occupied are completely released and reallocated to other vehicles that have not yet finished charging, ensuring that power modules are always allocated to the vehicles that need them most and avoiding resource waste caused by power stagnation.

[0024] Through the above steps, this method achieves dynamic power allocation for simultaneous charging of multiple vehicles. Throughout the charging process, the control system continuously calculates and adjusts according to the real-time needs of the vehicles, enabling vehicles that urgently need charging to receive higher allocated power and achieving optimal configuration of the limited total power among multiple vehicles. This maximizes charging efficiency and balances equipment utilization while meeting the simultaneous charging needs of multiple vehicles, thereby improving the comprehensive service capabilities of charging piles.

[0025] The following detailed description uses specific examples: In some embodiments, the remaining charging capacity of each vehicle is calculated based on its battery state of charge and battery capacity; the basic power requirement of each vehicle is calculated based on its remaining charging capacity and the user-preset charging time; the charging priority of each vehicle is determined based on the ratio of the user-preset charging time to the standard charging time, with a smaller ratio indicating higher priority; and the final power requirement of each vehicle is determined based on the charging priority and the basic power requirement. All vehicles to be charged are sorted according to their charging priority from highest to lowest; power modules are allocated to each vehicle sequentially according to the sorting until all power modules are allocated or the power requirements of all vehicles are met; if the sum of the power requirements of all vehicles is less than or equal to the total power of all power modules, then power is allocated in full according to the power requirements of each vehicle; if the sum of the power requirements of all vehicles is greater than the total power of all power modules, then the power requirements of high-priority vehicles are prioritized, and the remaining power is allocated proportionally to low-priority vehicles. The remaining power is allocated proportionally to low-priority vehicles, including: determining the ratio of the remaining power to the sum of the power requirements of all low-priority vehicles; and proportionally reducing the allocated power of each low-priority vehicle based on the ratio; wherein the allocated power is not lower than the minimum charging power threshold of each vehicle.

[0026] After the control system obtains the charging demand information of each vehicle to be charged, it first calculates the remaining charging capacity required for each vehicle based on the battery state of charge (i.e., the current remaining percentage of charge) and battery capacity. For example, if a vehicle has a battery capacity of 60kWh and a current state of charge of 20%, then its remaining charging capacity is 60kWh × (1-20%) = 48kWh. This remaining charging capacity represents the total amount of electricity required to fully charge the vehicle from its current state of charge to 100%. Subsequently, the control system calculates the basic power requirement for each vehicle based on its remaining charging capacity and the user's preset charging time. The basic power requirement is calculated by dividing the remaining charging capacity by the user's preset charging time. For example, if a vehicle has a remaining charging capacity of 48kWh and the user's preset charging time is 2 hours, then its basic power requirement is 48kWh ÷ 2h = 24kW. This basic power requirement indicates the average charging power required by the vehicle to meet the user's need to complete charging within the preset time.

[0027] The control system determines the charging priority of each vehicle based on the ratio of the user-preset charging time to the standard charging time. The standard charging time can be the system-preset normal full-charge time (e.g., the full-charge time calculated at a 0.5C charging rate) or the average charging time calculated based on the vehicle's battery characteristics and historical data. The smaller the ratio of the user-preset charging time to the standard charging time, the tighter the charging time reserved by the user, and the more urgent the vehicle's need for fast charging. Therefore, its charging priority is higher. For example, if a vehicle's standard charging time is 2 hours and the user-preset time is 1 hour, the ratio is 0.5, and the vehicle's charging priority is higher. If another vehicle's user-preset time is 4 hours, the ratio is 2, and its charging priority is lower.

[0028] When determining the final power demand, the control system takes into account priority factors. For vehicles with higher priority, a certain power boost will be given on top of the basic power demand. For vehicles with lower priority, the allocated power will be appropriately reduced when power is tight. Through this step, the control system combines the user's personalized time needs with the vehicle's objective charging needs, providing a basis for subsequent power allocation and ensuring that users who urgently need to charge can receive priority in subsequent allocations.

[0029] After calculating the charging priority and final power demand for each vehicle, the control system sorts all vehicles to be charged in descending order of charging priority and allocates power modules to each vehicle sequentially until all power modules are allocated or the power demand of all vehicles is met. During the allocation process, the control system first determines the relationship between the sum of the power demand of all vehicles to be charged and the total power of all power modules. If the sum of the power demand of all vehicles is less than or equal to the total power of all power modules, it means that the total power of the charging pile is sufficient to meet the charging needs of all vehicles. In this case, the control system allocates the power according to the final power demand calculated for each vehicle. The system ensures that each vehicle receives its desired charging power, allowing it to complete charging in the shortest possible time. If the sum of the power demands of all vehicles exceeds the total power of all power modules, it means that the total power of the charging station is insufficient to meet the needs of all vehicles simultaneously. In this case, the control system prioritizes the power demands of high-priority vehicles, allocating sufficient power to the vehicles ranked higher according to their priority, until the remaining power is insufficient to fully allocate to the next vehicle. Subsequently, the control system proportionally allocates the remaining power to the remaining low-priority vehicles, enabling these vehicles to receive reasonable charging services within the limited total power, and preventing any vehicle from being completely unable to charge.

[0030] In some embodiments, when the actual charging power of a vehicle is detected to drop below a preset threshold of its allocated power, it is determined whether the vehicle has entered the constant voltage charging stage or the charging completion state. If the vehicle has entered the constant voltage charging stage, some of its allocated power modules are released and the released power modules are redistributed to other vehicles that are still in the constant current charging stage. If the vehicle has completed charging, all of its allocated power modules are released and the released power modules are redistributed to other vehicles that have not yet completed charging.

[0031] During the process of charging multiple vehicles simultaneously at a charging station, the control system monitors the actual charging power and battery status of each vehicle in real time. As the charging process progresses, the vehicle's battery will experience different charging stages, and its power demand will change accordingly. When the control system detects that the actual charging power of a certain vehicle drops below the preset threshold of its current allocated power, for example, the actual power drops below 80% of the allocated power, the control system first determines whether the vehicle has entered the constant voltage charging stage or whether it has completed charging. This determination can be based on the vehicle's battery status information (such as voltage change rate, current change trend, etc.) or the charging stage identifier fed back in the charging protocol.

[0032] If the judgment result indicates that the vehicle has entered the constant voltage charging stage, it means that the vehicle's battery voltage is close to the full charging voltage and the charging current is naturally decreasing. At this time, the vehicle no longer needs all the allocated power. The control system releases a portion of the power modules occupied by the vehicle, disconnecting them from the vehicle. The released power modules enter the allocable state. The control system redistributes these power modules to vehicles that are still in the constant current charging stage and have higher power requirements, based on the priority and power demand of other vehicles that are still charging. Through this dynamic adjustment, the power that might have been idle due to the vehicle entering the constant voltage stage is promptly transferred to other vehicles that urgently need charging, avoiding the waste of power modules and ensuring that the limited total power is always used efficiently throughout the charging process.

[0033] If the determination result indicates that the vehicle has completed charging, the control system releases all power modules currently occupied by the vehicle. After these power modules are released, the control system regenerates the power allocation strategy based on the real-time priority and power demand of all vehicles still charging, and allocates these power modules to other vehicles that have not yet completed charging. Throughout the dynamic adjustment process, the control system maintains control over the power allocation matrix. When deciding to release some or all of the power modules of a vehicle, the control system disconnects the corresponding switches to cut off the electrical connection between these power modules and the charging gun. When deciding to redistribute the released power modules to other vehicles, the control system closes the corresponding switches to establish the electrical connection between these power modules and the charging gun connected to the target vehicle.

[0034] In accordance with the above-described method for controlling a charging pile, this application also provides a corresponding control device for a charging pile, comprising: an information acquisition module, a power calculation module, a strategy generation module, an instruction execution module, and a dynamic adjustment module. The information acquisition module acquires charging demand information from multiple vehicles connected to multiple charging guns. The charging demand information includes at least the battery state of charge, battery capacity, and user-preset charging duration. The power calculation module calculates the charging priority and required power for each vehicle based on the charging demand information. The strategy generation module generates a power allocation strategy based on the charging priority and required power, dynamically allocating multiple power modules within the charging pile to multiple charging guns. The instruction execution module controls the on / off state of the power allocation matrix according to the power allocation strategy to establish an electrical connection between the power modules and the charging guns. The dynamic adjustment module is used to... During charging, the actual charging power and battery status of each vehicle are monitored in real time. Based on the monitoring results, the on / off state of the power allocation matrix is ​​dynamically adjusted to reallocate power modules. The power calculation module includes: a remaining power calculation unit, a basic power calculation unit, a priority determination unit, and a final power determination unit. The remaining power calculation unit calculates the remaining charging power of each vehicle based on its battery state of charge and battery capacity. The basic power calculation unit calculates the basic power requirement of each vehicle based on its remaining charging power and the user's preset charging time. The priority determination unit determines the charging priority of each vehicle based on the ratio of the user's preset charging time to the standard charging time; the smaller the ratio, the higher the priority. The final power determination unit determines the final power requirement of each vehicle based on the charging priority and the basic power requirement.

[0035] When multiple electric vehicles are simultaneously connected to multiple charging guns at a charging station, the information acquisition module collects information such as the battery state of charge, battery capacity, and user-preset charging time requirements of the vehicles to be charged. This information is then processed sequentially by the remaining power calculation unit, basic power calculation unit, priority determination unit, and final power calculation unit in the power calculation module to calculate the remaining charging power, basic power requirement, charging priority, and final power requirement for each vehicle. Subsequently, the strategy generation module sorts the vehicles according to their charging priorities and allocates power in full when the total power is sufficient. When the total power is insufficient, it prioritizes the needs of high-priority vehicles and allocates the remaining power proportionally to low-priority vehicles, generating a power allocation strategy. The instruction execution module controls the on / off state of the power allocation matrix according to this strategy, establishes the electrical connection between the power module and the corresponding charging gun, and enables the vehicle to start charging. During the charging process, the dynamic adjustment module monitors the actual charging power and battery status of each vehicle in real time. When it detects that a vehicle has entered the constant voltage charging stage or has completed charging, it promptly releases some or all of its power modules and redistributes them to other vehicles that are still in the constant current charging stage or have not yet completed charging.

[0036] In some embodiments, the strategy generation module includes a sorting unit, an allocation unit, a full allocation unit, and a proportional allocation unit. The sorting unit sorts all vehicles to be charged according to their charging priority from high to low. The allocation unit allocates power modules to each vehicle sequentially according to the sorting order until all power modules are allocated or the power requirements of all vehicles are met. The full allocation unit allocates power to each vehicle according to its power requirements when the sum of the power requirements of all vehicles is less than or equal to the total power of all power modules. The proportional allocation unit prioritizes meeting the power requirements of high-priority vehicles and proportionally allocates the remaining power to low-priority vehicles when the sum of the power requirements of all vehicles is greater than the total power of all power modules. Specifically, the proportional allocation unit determines the ratio of the remaining power to the sum of the power requirements of all low-priority vehicles and proportionally reduces the allocated power to each low-priority vehicle based on this ratio, wherein the allocated power is not lower than the minimum charging power threshold for each vehicle.

[0037] The sorting unit receives charging priority data for all vehicles to be charged from the power calculation module, and sorts these vehicles in descending order of priority to form an ordered priority queue. The allocation unit allocates power modules to each vehicle in descending order of priority queue generated by the sorting unit. The full allocation unit is activated when the sum of the power demand of all vehicles is less than or equal to the total power of all power modules. At this time, the total power of the charging pile is sufficient to meet the charging needs of all vehicles. The full allocation unit allocates power according to the final power demand calculated for each vehicle, so that each vehicle can obtain its expected charging power. The proportional allocation unit is activated when the sum of the power demand of all vehicles is greater than the total power of all power modules. At this time, the total power of the charging pile is insufficient to meet all the needs of all vehicles at the same time. The proportional allocation unit sorts according to priority and allocates the required power to high-priority vehicles in full, ensuring that users who urgently need to charge can get priority. After completing the allocation of high-priority vehicles, the proportional allocation unit allocates the remaining power to low-priority vehicles proportionally.

[0038] The proportional allocation unit determines the remaining power value after prioritizing the needs of high-priority vehicles, and calculates the sum of the power demands of all low-priority vehicles. Then, it calculates the ratio of the remaining power to the sum of the power demands of low-priority vehicles, and proportionally reduces the allocated power of each low-priority vehicle based on this ratio. At the same time, the proportional allocation unit must also ensure that the allocated power of each vehicle is not lower than its minimum charging power threshold. If the allocated power calculated proportionally is lower than the minimum charging power threshold, the proportional allocation unit will prioritize ensuring that the vehicle receives the minimum threshold power, and then recalculate and allocate from the remaining power to ensure that all connected vehicles can start normally and maintain charging status.

[0039] In some embodiments, the dynamic adjustment module includes: a state judgment unit, a first release unit, and a second release unit. The state judgment unit is used to determine whether a vehicle has entered a constant voltage charging stage or a charging completion state when the actual charging power of a vehicle is detected to drop below a preset threshold of its allocated power. The first release unit is used to release part of the allocated power modules of the vehicle when it enters the constant voltage charging stage and redistribute the released power modules to other vehicles that are still in the constant current charging stage. The second release unit is used to release all of the allocated power modules of the vehicle when it is charging complete and redistribute the released power modules to other vehicles that have not yet completed charging.

[0040] During the simultaneous charging of multiple vehicles at a charging station, when the status judgment unit detects that the actual charging power of a certain vehicle has dropped below the preset threshold of its currently allocated power, the status judgment unit determines whether the vehicle has entered the constant voltage charging stage or has completed charging based on the vehicle's battery status information (such as voltage change rate, current change trend, or charging stage indicator fed back in the charging protocol). If the status judgment unit confirms that the vehicle has entered the constant voltage charging stage, the status judgment unit transmits this information to the first release unit. The first release unit analyzes the power modules currently occupied by the vehicle and controls the power allocation matrix to disconnect the electrical connection between these power modules and the charging gun connected to the vehicle through the instruction execution module. The first release unit reallocates these power modules to vehicles that are still in the constant current charging stage and have higher power requirements based on the real-time priority and power demand of other vehicles that are still charging.

[0041] If the status judgment unit confirms that the vehicle has completed charging, the status judgment unit transmits this information to the second release unit. The second release unit releases all power modules currently occupied by the vehicle and controls the power allocation matrix through the instruction execution module to disconnect all electrical connections between these power modules and the charging gun. The second release unit recalculates the allocation scheme based on the real-time priority and power demand of all vehicles that are still charging and allocates these power modules to other vehicles that have not yet completed charging.

[0042] Throughout the dynamic adjustment process, the status judgment unit continuously monitors, and the first release unit and the second release unit work together to ensure that even when the power is adjusted, the configuration status of the power module always maintains the best match with the real-time needs of the vehicle. During the process of charging multiple vehicles at the same time, the power allocation can always be adaptively optimized according to the real-time status of the vehicle, thereby maximizing the utilization of the power module.

[0043] In accordance with any embodiment of the control method and control device for a charging pile, this application also provides a corresponding charging pile, including: a pile body (not shown), multiple charging guns (not shown), multiple power modules, a power distribution matrix, a detection module, and a control module. The multiple charging guns are disposed on the pile body for connecting multiple vehicles to be charged. The multiple power modules are disposed inside the pile body for providing charging power. The power distribution matrix is ​​disposed between the multiple power modules and the multiple charging guns for switching the connection state between the power modules and the charging guns. The detection module is used to acquire charging demand information for each vehicle to be charged, including at least the battery state of charge, battery capacity, and user-preset charging time. The control module is electrically connected to the detection module and the power distribution matrix. The control module includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of the above-described charging pile control method.

[0044] The detection module collects information such as the battery state of charge, battery capacity, and user-preset charging time of multiple vehicles waiting to be charged. Based on this information, the control module calculates the remaining charging capacity, basic power demand, and charging priority of each vehicle, thereby determining the final power demand and generating a power allocation strategy. By controlling the on / off state of the power allocation matrix, multiple power modules are dynamically allocated to the corresponding charging guns, allowing multiple vehicles to start charging simultaneously. During the charging process, the control module monitors the actual charging power and battery status of each vehicle in real time. When a vehicle is detected to have entered the constant voltage charging stage or completed charging, some or all of its power modules are released in a timely manner and redistributed to other vehicles that are still in the constant current charging stage or have not yet completed charging. This achieves intelligent scheduling of charging power and efficient utilization of power modules when multiple vehicles waiting to be charged are connected to the charging station at the same time.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. A control method for a charging pile, characterized in that, include: S100: Obtain charging demand information of multiple vehicles to be charged connected to multiple charging guns, wherein the charging demand information includes at least the battery state of charge, battery capacity and user-preset charging time. S200: Calculate the charging priority and required power for each vehicle based on the charging demand information; S300: Based on the charging priority and required power, generate a power allocation strategy to dynamically allocate multiple power modules in the charging pile to the multiple charging guns; S400: According to the power allocation strategy, control the on / off state of the power allocation matrix to establish an electrical connection between the power module and the charging gun; S500: During the charging process, the actual charging power and battery status of each vehicle are monitored in real time, and the on / off state of the power distribution matrix is ​​dynamically adjusted according to the monitoring results to redistribute the power modules.

2. The method according to claim 1, characterized in that, Specifically, S200 includes: Calculate the remaining charging capacity for each vehicle based on its battery state of charge and battery capacity. The basic power requirement for each vehicle is calculated based on the remaining charging capacity of each vehicle and the user's preset charging time. The charging priority of each vehicle is determined based on the ratio of the user-preset charging time to the standard charging time, with a smaller ratio indicating a higher priority. The final power requirement for each vehicle is determined based on the charging priority and the basic power requirement.

3. The method according to claim 2, characterized in that, Specifically, S300 includes: Sort all vehicles waiting to be charged in descending order of charging priority; According to the aforementioned order, power modules are allocated to each vehicle in turn until all power modules have been allocated or the power requirements of all vehicles have been met. If the sum of the power requirements of all vehicles is less than or equal to the total power of all power modules, then the power is allocated in full according to the power requirements of each vehicle. If the sum of the power requirements of all vehicles exceeds the total power of all power modules, the power requirements of high-priority vehicles will be met first, and the remaining power will be allocated to low-priority vehicles proportionally.

4. The method according to claim 3, characterized in that, The method of allocating the remaining power proportionally to low-priority vehicles includes: Determine the ratio of remaining power to the sum of the power demands of all low-priority vehicles; Based on the ratio, the allocated power of each low-priority vehicle is reduced proportionally. The allocated power is not lower than the minimum charging power threshold for each vehicle.

5. The method according to claim 1, characterized in that, The S500 specifically includes: When the actual charging power of a vehicle is detected to drop below a preset threshold of its allocated power, it is determined whether the vehicle has entered the constant voltage charging stage or the charging is complete. If the vehicle enters the constant voltage charging stage, it releases some of its allocated power modules and redistributes the released power modules to other vehicles that are still in the constant current charging stage. If the vehicle is fully charged, all its allocated power modules are released and redistributed to other vehicles that have not yet finished charging.

6. A control device for a charging pile, characterized in that, include: The information acquisition module is used to acquire the charging demand information of multiple vehicles to be charged connected to multiple charging guns. The charging demand information includes at least the battery state of charge, battery capacity, and user-preset charging time. The power calculation module is used to calculate the charging priority and required power of each vehicle based on the charging demand information. The strategy generation module is used to generate a power allocation strategy based on the charging priority and required power, and dynamically allocate multiple power modules in the charging pile to the multiple charging guns. The instruction execution module is used to control the on / off state of the power allocation matrix according to the power allocation strategy, so as to establish an electrical connection between the power module and the charging gun. The dynamic adjustment module is used to monitor the actual charging power and battery status of each vehicle in real time during the charging process, and dynamically adjust the on / off state of the power distribution matrix according to the monitoring results to redistribute the power modules. The power calculation module includes: The remaining power calculation unit is used to calculate the remaining charging power of each vehicle based on the battery state of charge and battery capacity of each vehicle. The basic power calculation unit is used to calculate the basic power requirement of each vehicle based on the remaining charging capacity of each vehicle and the user's preset charging time. The priority determination unit is used to determine the charging priority of each vehicle based on the ratio of the user-preset charging time to the standard charging time, wherein the smaller the ratio, the higher the priority. The final power determination unit is used to determine the final power demand of each vehicle based on the charging priority and the basic power demand.

7. The apparatus according to claim 6, characterized in that, The strategy generation module includes: The sorting unit is used to sort all vehicles waiting to be charged from high to low charging priority. The allocation unit is used to allocate power modules to each vehicle in the order described above, until all power modules are allocated or the power requirements of all vehicles are met. The full allocation unit is used to allocate power according to the power demand of each vehicle when the sum of the power demand of all vehicles is less than or equal to the total power of all power modules. The proportional allocation unit is used to prioritize the power demand of high-priority vehicles when the sum of the power demand of all vehicles exceeds the total power of all power modules, and to allocate the remaining power proportionally to low-priority vehicles.

8. The apparatus according to claim 7, characterized in that, The proportional allocation unit is specifically used for: Determine the ratio of remaining power to the sum of the power demands of all low-priority vehicles; Based on the ratio, the allocated power of each low-priority vehicle is reduced proportionally. The allocated power is not lower than the minimum charging power threshold for each vehicle.

9. The apparatus according to claim 6, characterized in that, The dynamic adjustment module includes: The status judgment unit is used to determine whether a vehicle has entered the constant voltage charging stage or the charging completion state when the actual charging power of a vehicle is detected to drop below a preset threshold of its allocated power. The first release unit is used to release part of the allocated power modules when the vehicle enters the constant voltage charging stage, and redistribute the released power modules to other vehicles that are still in the constant current charging stage. The second release unit is used to release all of the allocated power modules of the vehicle when the vehicle has finished charging, and to redistribute the released power modules to other vehicles that have not yet finished charging.

10. A charging pile, characterized in that, include: pile body; Multiple charging guns are installed on the pile body for connecting multiple vehicles to be charged; Multiple power modules are installed inside the charging pile to provide charging power; A power distribution matrix is ​​set between the plurality of power modules and the plurality of charging guns, and is used to switch the connection state between the power modules and the charging guns; The detection module is used to acquire the charging demand information of each vehicle to be charged. The charging demand information includes at least the battery state of charge, battery capacity, and user-preset charging time. The control module is electrically connected to the detection module and the power distribution matrix respectively. The control module includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, it implements the steps of the control method for the charging pile as described in any one of claims 1-6.

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