A method and system for intelligent power distribution in dual-gun charging piles

Abstract

This invention relates to the field of charging pile control technology, specifically to an intelligent power allocation method and system for dual-gun charging piles. This method addresses the problems of coarse power allocation, inaccurate switching timing, and insufficient power utilization when two vehicles are charging simultaneously in a dual-gun charging pile. It acquires the charging status information of both vehicles and the current total available power, determines whether the vehicle is in a high-power continuous receiving state and determines the remaining high-power duration. When the total power is insufficient, it determines the high-power output channel and the maintenance charging output channel, calculates the target allocated power, and adjusts the channel according to switching conditions after reaching the preset minimum hold time. This method is applicable to the dynamic power allocation control of dual-gun DC charging piles.

Description

Technical Field

[0001] This invention relates to the field of charging pile control technology, specifically to a method and system for intelligent power distribution of dual-gun charging piles. Background Technology

[0002] With the continuous development of the new energy vehicle industry, the construction of public charging infrastructure is accelerating, and charging piles are evolving from single-gun output to dual-gun or even multi-gun coordinated output. Dual-gun charging piles have become an important development form of DC fast charging equipment because they can improve equipment utilization and increase the number of vehicles served under limited space and power distribution capacity conditions. Existing dual-gun charging piles typically achieve parallel charging of two charging guns by sharing power modules or sharing total power resources, and are widely used in scenarios such as commercial parking lots, highway service areas, and park charging stations. Therefore, how to achieve stable and efficient power allocation in dual-gun parallel charging scenarios has become an important research direction in the field of charging control.

[0003] However, existing dual-gun charging stations typically employ fixed-ratio power allocation, static priority allocation, or simple power allocation based on request when charging two vehicles simultaneously. This makes it difficult to dynamically assess the vehicle's current power status and power variation trends, leading to situations where one charging gun consistently occupies higher power while the other receives inefficient allocation. Furthermore, the lack of effective judgment regarding channel switching timing during charging results in unstable power allocation, frequent switching, or insufficient utilization of high-power resources, ultimately impacting dual-gun charging efficiency and user experience. Therefore, an intelligent power allocation method and system for dual-gun charging stations is needed to address these issues. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent power distribution method and system for dual-gun charging piles, solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a smart power distribution method for dual-gun charging piles, comprising:

[0008] S1. Obtain the first charging status information of the vehicle corresponding to the first charging gun, the second charging status information of the vehicle corresponding to the second charging gun, and the current available total power of the dual-gun charging pile;

[0009] S2. Based on the first charging status information and the second charging status information, determine whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state, and determine the remaining high-power continuous time for the vehicle in the high-power continuous receiving state.

[0010] S3. When both the first charging gun and the second charging gun are in a charging state and the current available total power is insufficient to simultaneously meet the high-power charging requirements of both guns, determine the high-power output channel and the maintenance charging output channel based on the high-power continuous receiving state and the high-power continuous remaining time.

[0011] S4. Based on the high-power output channel, the sustained charging output channel, and the current available total power, determine the corresponding target allocation power and control the dual-gun charging pile to output charging power;

[0012] S5. Reacquire the first charging state information and the second charging state information. After reaching the preset minimum holding time, determine whether the output channel switching condition is met based on the reacquired first charging state information and the second charging state information. If the condition is met, switch the high-power output channel and the sustain charging output channel, and redetermine the corresponding target power allocation.

[0013] Furthermore, both the first charging status information and the second charging status information include the requested power, the actual received power, and the requested power change sequence.

[0014] The requested power change sequence is a power sequence formed by arranging the requested power of the corresponding vehicle in chronological order within a continuous sampling period.

[0015] Furthermore, determining whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state based on the first charging state information and the second charging state information includes:

[0016] The corresponding average request power and request power decrease rate are determined based on the requested power change sequence.

[0017] Determine the corresponding power reception ratio based on the actual received power and the requested power;

[0018] When the average requested power of the vehicle corresponding to the target charging gun is greater than a preset high power threshold, the power reception ratio is greater than a preset reception ratio threshold, and the requested power decrease rate is less than a preset decrease rate threshold, it is determined that the vehicle corresponding to the target charging gun is in a high power continuous reception state.

[0019] Furthermore, determining the remaining high-power duration for the vehicle in the high-power continuous receiving state includes:

[0020] The power difference is determined based on the current requested power and the preset high power threshold.

[0021] The request power decrease rate is determined based on the requested power change sequence;

[0022] The remaining high power duration is determined based on the power difference and the requested power decay rate.

[0023] When the requested power decrease rate is less than the preset minimum rate value, the preset minimum rate value is used as the calculation benchmark for the remaining high power duration.

[0024] Furthermore, determining the high-power output channel and the sustain charging output channel based on the high-power continuous reception state and the remaining high-power duration includes:

[0025] When both charging guns are in a high-power continuous receiving state for the corresponding vehicles, the charging gun with the shorter remaining high-power continuous time is identified as the high-power output channel, and the other charging gun is identified as the maintenance charging output channel.

[0026] When only one charging gun corresponds to a vehicle in a high-power continuous receiving state, the charging gun in the high-power continuous receiving state is identified as the high-power output channel, and the other charging gun is identified as the maintenance charging output channel.

[0027] When neither of the two charging guns is in a high-power continuous receiving state for the corresponding vehicle, the high-power output channel and the charging output channel determined in the previous control cycle are maintained.

[0028] Furthermore, determining the corresponding target allocated power based on the high-power output channel, the sustain charging output channel, and the current total available power includes:

[0029] The smaller value between the requested power of the vehicle corresponding to the sustained charging output channel and the preset minimum sustained power is determined as the target allocated power corresponding to the sustained charging output channel.

[0030] The smaller of the remaining power after deducting the target allocated power corresponding to the maintenance charging output channel from the current total available power and the requested power of the vehicle corresponding to the high power output channel is determined as the target allocated power corresponding to the high power output channel.

[0031] Furthermore, the output channel switching conditions include:

[0032] Based on the newly acquired first and second charging status information, it is determined that the vehicle corresponding to the current high-power output channel has exited the high-power continuous reception state.

[0033] Furthermore, the output channel switching conditions also include:

[0034] Based on the newly acquired first and second charging status information, it is determined that the actual received power of the vehicle corresponding to the current high-power output channel is lower than the preset high-power output threshold within the continuous sampling period.

[0035] Furthermore, the output channel switching conditions also include:

[0036] Based on the newly acquired first and second charging status information, it is determined that the vehicle corresponding to the current charging output channel is in a high-power continuous receiving state, and its high-power continuous remaining time is less than the high-power continuous remaining time of the vehicle corresponding to the current high-power output channel, and the difference between the two is greater than the preset switching threshold.

[0037] This invention also provides an intelligent power distribution system for dual-gun charging piles, comprising:

[0038] The status information acquisition module is used to acquire the first charging status information of the vehicle corresponding to the first charging gun, the second charging status information of the vehicle corresponding to the second charging gun, and the current available total power of the dual-gun charging pile.

[0039] The status determination and time determination module is used to determine whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state based on the first charging status information and the second charging status information, and to determine the remaining high-power continuous time for the vehicle in the high-power continuous receiving state.

[0040] The channel determination module is used to determine the high-power output channel and the maintenance charging output channel based on the high-power continuous receiving state and the remaining high-power continuous time when both the first charging gun and the second charging gun are in the charging state and the current available total power is insufficient to meet the high-power charging demand of both guns at the same time.

[0041] The power allocation and output control module is used to determine the corresponding target allocation power based on the high power output channel, the sustain charging output channel and the current available total power, and control the dual-gun charging pile to output charging power.

[0042] The channel switching module is used to reacquire the first charging state information and the second charging state information. After reaching the preset minimum holding time, it determines whether the output channel switching conditions are met based on the reacquired first charging state information and second charging state information. If the conditions are met, the high-power output channel and the sustain charging output channel are switched, and the corresponding target power allocation is re-determined.

[0043] (III) Beneficial Effects

[0044] Compared with the prior art, the present invention provides an intelligent power distribution method and system for dual-gun charging piles, which has the following beneficial effects:

[0045] A method and system for intelligent power allocation in dual-gun charging piles is disclosed. By acquiring the charging status information of the vehicles corresponding to the dual guns, the system determines whether the vehicle is in a high-power continuous receiving state and further determines the remaining high-power duration. When both guns are charging simultaneously and the current available total power is insufficient to simultaneously meet the high-power charging demand of both guns, the system determines the high-power output channel and the maintenance charging output channel based on the high-power continuous receiving state and the remaining high-power duration. Combined with preset minimum hold time and output channel switching conditions, the system dynamically adjusts the target power allocation. This avoids the problems of coarse power allocation and uneven power utilization of the dual guns caused by fixed ratio allocation, static priority allocation, or simple power allocation upon request in existing technologies. At the same time, it can perform targeted allocation and switching of high-power resources based on the actual power receiving state and power change trend of the vehicle, reducing invalid switching and frequent fluctuations, and improving the power utilization efficiency, charging stability, and user charging experience in dual-gun parallel charging scenarios. Attached Figure Description

[0046] Figure 1 A schematic diagram illustrating the steps of an intelligent power distribution method for a dual-gun charging pile provided by the present invention;

[0047] Figure 2 A flowchart illustrating an intelligent power distribution method for dual-gun charging piles provided by the present invention;

[0048] Figure 3 This is a schematic diagram of the structure of a dual-gun charging pile intelligent power distribution system provided by the present invention. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] Please see Figure 1-2 , Figure 1 A schematic diagram illustrating the steps of an intelligent power distribution method for a dual-gun charging pile provided by the present invention; Figure 2This is a flowchart illustrating an intelligent power allocation method for a dual-gun charging pile provided by the present invention; the present invention provides an intelligent power allocation method for a dual-gun charging pile, comprising:

[0052] S1. Obtain the first charging status information of the vehicle corresponding to the first charging gun, the second charging status information of the vehicle corresponding to the second charging gun, and the current available total power of the dual-gun charging pile;

[0053] Specifically, when the dual-gun charging station is running, the charging controller establishes data interaction with the first charging gun, the second charging gun, and the power module. After the first charging gun is connected to the first vehicle, the charging controller reads the charging parameters fed back by the first vehicle and simultaneously collects the voltage and current data of the corresponding output circuit of the first charging gun to form the first charging status information. After the second charging gun is connected to the second vehicle, the second charging status information is formed in the same way. At the same time, the charging controller determines the current available total power based on the capacity of the currently operating power module, the power limit value issued by the grid side, and the derating result inside the charging station, and stores the first charging status information, the second charging status information, and the current available total power in the data buffer area corresponding to the current control cycle.

[0054] Furthermore, in one embodiment provided by the present invention, both the first charging state information and the second charging state information include requested power, actual received power, state of charge and requested power change sequence.

[0055] The requested power change sequence is a power sequence formed by arranging the requested power of the corresponding vehicle in chronological order within a continuous sampling period.

[0056] Specifically, when a vehicle directly reports a target power, the charging controller uses that target power as the requested power. When a vehicle reports a target voltage and a target current, the charging controller multiplies the target voltage and target current to obtain the requested power. The actual received power is calculated using the output voltage and output current collected in real time at the charging station. The state of charge (SOC) is the current battery SOC value fed back by the vehicle during charging communication. The requested power change sequence is updated using a fixed sampling period. At each sampling moment, the current requested power is recorded and stored in a sequence buffer in chronological order. When the next sampling moment arrives, the earliest requested power in the sequence buffer is deleted, and the current requested power is written in, forming a continuous requested power change sequence arranged in chronological order.

[0057] S2. Based on the first charging status information and the second charging status information, determine whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state, and determine the remaining high-power continuous time for the vehicle in the high-power continuous receiving state.

[0058] Specifically, for any charging gun, the requested power value at each sampling moment is first extracted from the requested power change sequence. Then, combined with the actual received power and requested power at the current sampling moment, it is determined whether the vehicle corresponding to the charging gun has a continuous high power receiving capability within the current control cycle. If the determination result is that the vehicle is in a high-power continuous receiving state, the remaining high-power continuous time of the vehicle is determined based on the difference between the current requested power and the preset high-power threshold, as well as the requested power decrease rate. If the determination result is that the vehicle is not in a high-power continuous receiving state, the remaining high-power continuous time of the vehicle is recorded as zero. The first and second charging guns complete the state determination and the determination of the remaining high-power continuous time in the same way.

[0059] Furthermore, in one embodiment of the present invention, determining whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state based on the first charging state information and the second charging state information includes:

[0060] The corresponding average request power and request power decrease rate are determined based on the requested power change sequence.

[0061] Determine the corresponding power reception ratio based on the actual received power and the requested power;

[0062] When the average requested power of the vehicle corresponding to the target charging gun is greater than a preset high power threshold, the power reception ratio is greater than a preset reception ratio threshold, and the requested power decrease rate is less than a preset decrease rate threshold, it is determined that the vehicle corresponding to the target charging gun is in a high power continuous reception state.

[0063] Specifically, for any charging gun, suppose the requested power change sequence contains continuous The requested power at each sampling time point is denoted as follows: The corresponding sampling times are denoted as follows: .in, It is a positive integer. Indicates the first The requested power at each sampling time. Indicates the first Each sampling time point. The charging controller calculates the average requested power using the following formula. : .

[0064] The charging controller calculates the requested power reduction rate according to the following formula. : To maintain a consistent descent direction, when At that time, Record it as 0.

[0065] At the current sampling time, let the requested power be denoted as . The actual received power is recorded as The charging controller calculates the power receiving ratio according to the following formula. : ;when ,Will Record it as 0.

[0066] After completing the above calculations, the charging controller will With preset high power threshold Compare, Compared with the preset reception ratio threshold Compare and With preset descent rate threshold Compare; when satisfied and If the charging gun is in a high-power continuous receiving state, it is determined that the vehicle corresponding to the charging gun is in a high-power continuous receiving state; otherwise, it is determined that the vehicle corresponding to the charging gun is not in a high-power continuous receiving state.

[0067] Furthermore, in one embodiment of the present invention, determining the remaining high-power duration for the vehicle in the high-power continuous reception state includes:

[0068] The power difference is determined based on the current requested power and the preset high power threshold.

[0069] The request power decrease rate is determined based on the requested power change sequence;

[0070] The remaining high power duration is determined based on the power difference and the requested power decay rate.

[0071] When the requested power decrease rate is less than the preset minimum rate value, the preset minimum rate value is used as the calculation benchmark for the remaining high power duration.

[0072] Specifically, once a vehicle corresponding to any charging gun is determined to be in a high-power continuous receiving state, the charging controller reads the requested power of that charging gun at the current sampling time. And calculate the requested power and the preset high power threshold. The difference between them yields the power difference. .

[0073] Subsequently, the charging controller calls the requested power change sequence corresponding to the charging gun and obtains the requested power decrease rate in the aforementioned manner. Let the preset minimum speed value be... ,when At that time, with Alternative Participate in subsequent calculations; when At that time, directly adopt Participate in subsequent calculations. Remaining high-power duration. Determine using the following formula: ,in, Indicates the calculation reference rate; when hour, ;when hour, .

[0074] When the current requested power At that time, the high power will continue for the remaining time. Recorded as 0. From this point on, the charging controller obtains the remaining high-power duration for the vehicles corresponding to the first charging gun and the vehicles corresponding to the second charging gun within the current control cycle.

[0075] S3. When both the first charging gun and the second charging gun are in a charging state and the current available total power is insufficient to simultaneously meet the high-power charging requirements of both guns, determine the high-power output channel and the maintenance charging output channel based on the high-power continuous receiving state and the high-power continuous remaining time.

[0076] Specifically, after both the first and second charging guns have established charging connections with their respective vehicles, the charging controller reads the first charging status information, the second charging status information, the first high-power continuous receiving status determination result, the second high-power continuous receiving status determination result, the first high-power continuous remaining time, the second high-power continuous remaining time, and the current total available power for the current control cycle. Subsequently, the charging controller records the current requested power of the vehicle corresponding to the charging gun in the high-power continuous receiving state as the high-power charging demand of that charging gun, and calculates the sum of the high-power charging demands of both guns. When the sum of the high-power charging demands of both guns is greater than the current total available power, the output channel determination process begins. During the output channel determination process, the charging controller determines a high-power output channel between the two charging guns and designates the other charging gun as the maintenance charging output channel. After completing the channel determination for this control cycle, the charging controller writes the channel determination results corresponding to the first and second charging guns into the channel status register.

[0077] Furthermore, in one embodiment of the present invention, determining the high-power output channel and the sustain charging output channel based on the high-power continuous reception state and the remaining high-power continuous time includes:

[0078] When both charging guns are in a high-power continuous receiving state for the corresponding vehicles, the charging gun with the shorter remaining high-power continuous time is identified as the high-power output channel, and the other charging gun is identified as the maintenance charging output channel.

[0079] When only one charging gun corresponds to a vehicle in a high-power continuous receiving state, the charging gun in the high-power continuous receiving state is identified as the high-power output channel, and the other charging gun is identified as the maintenance charging output channel.

[0080] When neither of the two charging guns is in a high-power continuous receiving state for the corresponding vehicle, the high-power output channel and the charging output channel determined in the previous control cycle are maintained.

[0081] Specifically, the charging controller first reads the high-power continuous receiving status determination result and the first high-power continuous remaining time of the vehicle corresponding to the first charging gun, and then reads the high-power continuous receiving status determination result and the second high-power continuous remaining time of the vehicle corresponding to the second charging gun.

[0082] When both the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state, the charging controller compares the first high-power continuous remaining time with the second high-power continuous remaining time. When the first high-power continuous remaining time is less than the second high-power continuous remaining time, the first charging gun is designated as the high-power output channel and the second charging gun is designated as the sustain charging output channel. When the second high-power continuous remaining time is less than the first high-power continuous remaining time, the second charging gun is designated as the high-power output channel and the first charging gun is designated as the sustain charging output channel. When the first high-power continuous remaining time is equal to the second high-power continuous remaining time, the high-power output channel and sustain charging output channel determined in the previous control cycle are maintained.

[0083] When only one charging gun corresponds to a vehicle in a high-power continuous receiving state, the charging controller will directly identify the charging gun in the high-power continuous receiving state as the high-power output channel, and identify the other charging gun as the maintenance charging output channel.

[0084] When neither of the two charging guns is in a high-power continuous receiving state, the charging controller reads the channel determination result saved in the channel status register of the previous control cycle, and keeps the high-power output channel and the charging output channel determined in the previous control cycle unchanged.

[0085] S4. Based on the high-power output channel, the sustained charging output channel, and the current available total power, determine the corresponding target allocation power and control the dual-gun charging pile to output charging power;

[0086] Specifically, within the current control cycle, the charging controller first reads the high-power output channel determination result and the sustain charging output channel determination result from the channel status register area. Then, it reads the current requested power and the current total available power for the vehicles corresponding to the two channels, respectively. Subsequently, the charging controller completes the power allocation for this control cycle by first determining the target allocation power for the sustain charging output channel and then determining the target allocation power for the high-power output channel. After allocation, the charging controller converts the target allocation power for the two channels into output current control commands or power control commands and sends them to the power module control unit. The power module control unit adjusts the output power allocated to the first and second charging guns according to the allocation results, ensuring that the charging gun corresponding to the high-power output channel outputs at high power and the charging gun corresponding to the sustain charging output channel outputs at sustain power.

[0087] Furthermore, in one embodiment of the present invention, determining the corresponding target allocated power based on the high-power output channel, the sustain charging output channel, and the current available total power includes:

[0088] The smaller value between the requested power of the vehicle corresponding to the sustained charging output channel and the preset minimum sustained power is determined as the target allocated power corresponding to the sustained charging output channel.

[0089] The smaller of the remaining power after deducting the target allocated power corresponding to the maintenance charging output channel from the current total available power and the requested power of the vehicle corresponding to the high power output channel is determined as the target allocated power corresponding to the high power output channel.

[0090] Specifically, let the requested power of the vehicle corresponding to the maintained charging output channel at the current sampling time be... The preset minimum sustaining power is Maintain the target allocated power corresponding to the charging output channel as The charging controller then determines the target power allocation corresponding to the charging output channel according to the following formula: .

[0091] Let the current total available power be The high-power output channel corresponds to the vehicle's requested power at the current sampling time. The target allocated power corresponding to the high-power output channel is The charging controller first calculates the remaining power. : Then determine the target power allocation corresponding to the high-power output channel according to the following formula. : .

[0092] When the first charging gun is designated as the high-power output channel and the second charging gun is designated as the maintenance charging output channel, the charging controller will... Write to the power control register corresponding to the first charging gun, and... Write to the power control register corresponding to the second charging gun; when the second charging gun is determined as a high-power output channel and the first charging gun is determined as a maintenance charging output channel, the charging controller will... Write to the power control register corresponding to the second charging gun, and... The power control register corresponding to the first charging gun is written. The power module control unit performs output adjustment according to the target power allocation in its respective power control register until the next control cycle begins.

[0093] S5. Reacquire the first charging state information and the second charging state information. After reaching the preset minimum holding time, determine whether the output channel switching condition is met based on the reacquired first charging state information and the second charging state information. If the condition is met, switch the high-power output channel and the sustain charging output channel, and redetermine the corresponding target power allocation.

[0094] Specifically, after the target power allocation for the current control cycle is issued, the charging controller starts channel hold timer and reacquires the first and second charging status information at subsequent sampling times. After reacquisition, the charging controller updates the high-power continuous reception status determination results and the remaining high-power continuous reception time for the vehicles corresponding to the first and second charging guns. Let the current channel hold time be... The preset minimum holding time is ,when At this time, the charging controller maintains the high-power output channel and the charging output channel already determined in the current control cycle, and maintains the target allocated power in the current power control register; when At this time, the charging controller enters the output channel switching condition judgment process. If any switching condition is met, the charging controller rewrites the current sustain charging output channel to a high-power output channel, and the current high-power output channel to a sustain charging output channel, and re-executes the target power allocation calculation according to the channel determination result after the switch; after the recalculation is completed, the new target power allocation is written to the power control register of the corresponding charging gun, and the channel hold time is cleared to zero, entering the next control cycle. If none of the switching conditions are met, the current high-power output channel, sustain charging output channel, and corresponding target power allocation remain unchanged.

[0095] Furthermore, in one embodiment provided by the present invention, the output channel switching conditions include:

[0096] Based on the newly acquired first and second charging status information, it is determined that the vehicle corresponding to the current high-power output channel has exited the high-power continuous reception state.

[0097] Specifically, after reaching the preset minimum hold time, the charging controller first reads the requested power change sequence, actual received power, and requested power of the vehicle corresponding to the current high-power output channel after reacquisition, and then recalculates the vehicle's average requested power, requested power decrease rate, and power reception ratio. When the recalculation results no longer meet the judgment conditions corresponding to the continuous high-power reception state, the vehicle corresponding to the current high-power output channel is marked as exiting the continuous high-power reception state. Once the charging controller detects this exit mark, it uses it as a valid switching condition and ends the continued judgment of other switching conditions in this control cycle, directly executing the output channel switching operation.

[0098] Furthermore, in one embodiment provided by the present invention, the output channel switching condition further includes:

[0099] Based on the newly acquired first and second charging status information, it is determined that the actual received power of the vehicle corresponding to the current high-power output channel is lower than the preset high-power output threshold within the continuous sampling period.

[0100] Specifically, let the preset high-power output threshold be... The current high-power output channel corresponds to the vehicle in the first... The actual received power at each sampling time is The charging controller compares at each sampling time. and Size relationship; when When the low power count is reached, increment the count by one; when... When the low-power count value is reached, it is reset to zero. Let the threshold value for determining the count corresponding to the continuous sampling period be... When the low power count value reaches When the actual received power of the vehicle corresponding to the current high-power output channel is lower than the preset high-power output threshold within the continuous sampling period, the charging controller uses this result as the switching condition. After completing the output channel switching, the charging controller resets the low-power count value to zero.

[0101] Furthermore, in one embodiment provided by the present invention, the output channel switching condition further includes:

[0102] Based on the newly acquired first and second charging status information, it is determined that the vehicle corresponding to the current charging output channel is in a high-power continuous receiving state, and its high-power continuous remaining time is less than the high-power continuous remaining time of the vehicle corresponding to the current high-power output channel, and the difference between the two is greater than the preset switching threshold.

[0103] Specifically, after the preset minimum holding time is reached, the charging controller reads the remaining high-power duration for the vehicle corresponding to the current high-power output channel. And the remaining high-power duration corresponding to the current charging output channel for the vehicle. It also reads the result of determining the high-power continuous reception status of the vehicle corresponding to the current charging output channel. Let the preset switching threshold be... The charging controller calculates the difference between the two. : ,in, This represents the difference in remaining high-power duration between the vehicle corresponding to the current high-power output channel and the vehicle corresponding to the current charge-maintaining output channel.

[0104] When the vehicle corresponding to the current charging output channel is in a high-power continuous receiving state, ,and At that time, the charging controller determines that the vehicle corresponding to the maintaining charging output channel is closer to exiting the high-power continuous receiving state in the current control cycle, and uses this result as the switching condition; then it switches the maintaining charging output channel to the high-power output channel, switches the original high-power output channel to the maintaining charging output channel, and recalculates the target power allocation corresponding to the two charging guns based on the channel determination result after the switch.

[0105] Please see Figure 3 , Figure 3 This invention provides a structural schematic diagram of a dual-gun charging pile intelligent power distribution system. The invention also provides a dual-gun charging pile intelligent power distribution system, comprising:

[0106] The status information acquisition module is used to acquire the first charging status information of the vehicle corresponding to the first charging gun, the second charging status information of the vehicle corresponding to the second charging gun, and the current available total power of the dual-gun charging pile.

[0107] The status determination and time determination module is used to determine whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state based on the first charging status information and the second charging status information, and to determine the remaining high-power continuous time for the vehicle in the high-power continuous receiving state.

[0108] The channel determination module is used to determine the high-power output channel and the maintenance charging output channel based on the high-power continuous receiving state and the remaining high-power continuous time when both the first charging gun and the second charging gun are in the charging state and the current available total power is insufficient to meet the high-power charging demand of both guns at the same time.

[0109] The power allocation and output control module is used to determine the corresponding target allocation power based on the high power output channel, the sustain charging output channel and the current available total power, and control the dual-gun charging pile to output charging power.

[0110] The channel switching module is used to reacquire the first charging state information and the second charging state information. After reaching the preset minimum holding time, it determines whether the output channel switching conditions are met based on the reacquired first charging state information and second charging state information. If the conditions are met, the high-power output channel and the sustain charging output channel are switched, and the corresponding target power allocation is re-determined.

[0111] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0112] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for intelligent power distribution in a dual-gun charging station, characterized in that, include: S1. Obtain the first charging status information of the vehicle corresponding to the first charging gun, the second charging status information of the vehicle corresponding to the second charging gun, and the current available total power of the dual-gun charging pile; S2. Based on the first charging status information and the second charging status information, determine whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state, and determine the remaining high-power continuous time for the vehicle in the high-power continuous receiving state. S3. When both the first charging gun and the second charging gun are in a charging state and the current available total power is insufficient to simultaneously meet the high-power charging requirements of both guns, determine the high-power output channel and the maintenance charging output channel based on the high-power continuous receiving state and the high-power continuous remaining time. S4. Based on the high-power output channel, the sustained charging output channel, and the current available total power, determine the corresponding target allocation power and control the dual-gun charging pile to output charging power; S5. Reacquire the first charging state information and the second charging state information. After reaching the preset minimum holding time, determine whether the output channel switching condition is met based on the reacquired first charging state information and the second charging state information. If the condition is met, switch the high-power output channel and the sustain charging output channel, and redetermine the corresponding target power allocation.

2. The intelligent power distribution method for a dual-gun charging pile according to claim 1, characterized in that: Both the first charging status information and the second charging status information include the requested power, the actual received power, and the requested power change sequence; The requested power change sequence is a power sequence formed by arranging the requested power of the corresponding vehicle in chronological order within a continuous sampling period.

3. The intelligent power distribution method for a dual-gun charging pile according to claim 2, characterized in that, The step of determining whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state based on the first charging state information and the second charging state information includes: The corresponding average request power and request power decrease rate are determined based on the requested power change sequence. Determine the corresponding power reception ratio based on the actual received power and the requested power; When the average requested power of the vehicle corresponding to the target charging gun is greater than a preset high power threshold, the power reception ratio is greater than a preset reception ratio threshold, and the requested power decrease rate is less than a preset decrease rate threshold, it is determined that the vehicle corresponding to the target charging gun is in a high power continuous reception state.

4. The intelligent power distribution method for a dual-gun charging pile according to claim 3, characterized in that, Determining the remaining high-power duration for a vehicle in the high-power continuous reception state includes: The power difference is determined based on the current requested power and the preset high power threshold. The request power decrease rate is determined based on the requested power change sequence; The remaining high power duration is determined based on the power difference and the requested power decay rate. When the requested power decrease rate is less than the preset minimum rate value, the preset minimum rate value is used as the calculation benchmark for the remaining high power duration.

5. The intelligent power distribution method for a dual-gun charging pile according to claim 1, characterized in that, The step of determining the high-power output channel and the sustain charging output channel based on the high-power continuous reception state and the remaining high-power duration includes: When both charging guns are in a high-power continuous receiving state for the corresponding vehicles, the charging gun with the shorter remaining high-power continuous time is identified as the high-power output channel, and the other charging gun is identified as the maintenance charging output channel. When only one charging gun corresponds to a vehicle in a high-power continuous receiving state, the charging gun in the high-power continuous receiving state is identified as the high-power output channel, and the other charging gun is identified as the maintenance charging output channel. When neither of the two charging guns is in a high-power continuous receiving state, the high-power output channel and the charging output channel determined in the previous control cycle are maintained; when there is no channel determination result in the previous control cycle, the charging gun with the larger requested power is determined as the high-power output channel; when the requested power of the two is equal, the first charging gun is determined as the high-power output channel.

6. The intelligent power distribution method for a dual-gun charging pile according to claim 5, characterized in that, The step of determining the corresponding target power allocation based on the high-power output channel, the sustaining charge output channel, and the current total available power includes: The smaller value between the requested power of the vehicle corresponding to the sustained charging output channel and the preset minimum sustained power is determined as the target allocated power corresponding to the sustained charging output channel; The smaller of the remaining power after deducting the target allocated power corresponding to the maintenance charging output channel from the current total available power and the requested power of the vehicle corresponding to the high power output channel is determined as the target allocated power corresponding to the high power output channel.

7. The intelligent power distribution method for a dual-gun charging pile according to claim 1, characterized in that, The output channel switching conditions include: Based on the newly acquired first and second charging status information, it is determined that the vehicle corresponding to the current high-power output channel has exited the high-power continuous reception state.

8. The intelligent power distribution method for a dual-gun charging pile according to claim 7, characterized in that, The output channel switching conditions also include: Based on the newly acquired first and second charging status information, it is determined that the actual received power of the vehicle corresponding to the current high-power output channel is lower than the preset high-power output threshold within the continuous sampling period.

9. The intelligent power distribution method for a dual-gun charging pile according to claim 7, characterized in that, The output channel switching conditions also include: Based on the newly acquired first and second charging status information, it is determined that the vehicle corresponding to the current charging output channel is in a high-power continuous receiving state, and its high-power continuous remaining time is less than the high-power continuous remaining time of the vehicle corresponding to the current high-power output channel, and the difference between the two is greater than the preset switching threshold.

10. A dual-gun charging pile intelligent power distribution system, characterized in that, include: The status information acquisition module is used to acquire the first charging status information of the vehicle corresponding to the first charging gun, the second charging status information of the vehicle corresponding to the second charging gun, and the current available total power of the dual-gun charging pile. The status determination and time determination module is used to determine whether the vehicle corresponding to the first charging gun and the vehicle corresponding to the second charging gun are in a high-power continuous receiving state based on the first charging status information and the second charging status information, and to determine the remaining high-power continuous time for the vehicle in the high-power continuous receiving state. The channel determination module is used to determine the high-power output channel and the maintenance charging output channel based on the high-power continuous receiving state and the remaining high-power continuous time when both the first charging gun and the second charging gun are in the charging state and the current available total power is insufficient to meet the high-power charging demand of both guns at the same time. The power allocation and output control module is used to determine the corresponding target allocation power based on the high power output channel, the sustain charging output channel and the current available total power, and control the dual-gun charging pile to output charging power. The channel switching module is used to reacquire the first charging state information and the second charging state information. After reaching the preset minimum holding time, it determines whether the output channel switching conditions are met based on the reacquired first charging state information and second charging state information. If the conditions are met, the high-power output channel and the sustain charging output channel are switched, and the corresponding target power allocation is re-determined.

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