A power intelligent distribution charging system and control method

Abstract

The present invention discloses a power intelligent distribution charging system and method, including: a power intelligent distribution unit, a charging rectifier cabinet, and a split charging pile; the power intelligent distribution unit obtains power distribution information and issues a power distribution strategy to the charging rectifier cabinet in real time; the charging rectifier cabinet combines the power distribution strategy with the vehicle charging demand and adjusts the output power in real time; the split charging pile sends the vehicle charging demand to the charging rectifier cabinet and measures the consumed electric energy. Advantages: The internal devices and components are divided into different module areas according to functions, and a unified connection specification is formulated between the module areas, which has the advantages of flexible combination and convenient expansion; based on the limited power distribution capacity, the charging time and cost problems are optimized, and the adverse impact of disorderly charging on the peak-valley difference of the power grid load is avoided.

Description

Technical Field

[0001] The invention relates to a power intelligent distribution charging system and a control method, belonging to the technical field of electric vehicle charging and replacement. Background Art

[0002] As one of the strategic emerging industries that my country is cultivating and developing, electric vehicles are the direction of future development of the automobile industry. Governments around the world have given significant support to the development of electric vehicles, and power companies in various countries have also actively participated in the research and construction of electric vehicle energy supply facilities. In China, the number of electric vehicles has increased year by year. The construction of electric vehicle energy supply facilities such as electric vehicle charging stations that match the rapid development of electric vehicles is the basis for the promotion of electric vehicles and will also usher in a period of rapid development. Electric vehicle charging piles (including electric vehicle AC charging piles and non-onboard chargers) are included in one of the seven major areas of "new infrastructure", and the scale of charging piles will increase significantly.

[0003] The existing distribution network infrastructure generally has insufficient remaining capacity, especially in old residential areas and commercial areas. The charging facilities cannot be coordinated and controlled with each other, and the contradiction between high-power charging and distribution capacity cannot be resolved, thus failing to meet the charging needs of large-scale and high-power electric vehicles. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a power intelligent distribution charging system and a control method.

[0005] In order to solve the above technical problems, the present invention provides a power intelligent distribution charging system, including: a charging rectifier cabinet and a plurality of split charging piles, characterized in that:

[0006] The charging rectifier cabinet is equipped with: a power controller (1), a power switching module (2), a power intelligent distribution unit (3), a charging module (4), and a power distribution module (5);

[0007] The power intelligent distribution unit (3)

[0008] Communicate with the management platform to obtain power distribution limit information,

[0009] Connected to the split-type charging pile and the power controller (1) respectively, and used to transmit vehicle charging demand information and power dynamic adjustment information respectively;

[0010] The power controller (1)

[0011] connected to the power distribution module (5) to obtain the working status information of the power distribution module and transmit power output control information,

[0012] connected to the charging module (4) for transmitting power regulation information;

[0013] connected to the power switching module (2) for transmitting information for adjusting the number of charging modules;

[0014] The power distribution module (5) is used to provide working power to the power intelligent distribution unit (3), the split charging pile, the charging module (4), the power switching module (2), and the power controller (1);

[0015] The charging module (4) is used to convert the AC380V alternating current provided by the power distribution module (5) into 200V-750V direct current and output it to the split-type charging pile;

[0016] The power switching module (2) is used to obtain the dynamic adjustment instruction of the power intelligent distribution unit (3) and arbitrarily switch the output of each charging module (5) at the charging connection output end of the split-type charging pile;

[0017] The split-type charging pile is used to receive charging demand information and charge the vehicle.

[0018] Furthermore, the charging rectifier cabinet also includes: a heat dissipation module (6) and a protection module (7);

[0019] The heat dissipation module (6) is used to dissipate heat for the modules in the charging rectifier cabinet;

[0020] The protection module (7) is used for lightning protection and leakage protection.

[0021] Furthermore, the charging module (4) comprises: a 20kW intelligent high-frequency switching power supply (8) and an electric energy management module (9),

[0022] The 20kW intelligent high-frequency switching power supply (8) is used to convert the AC380V alternating current provided by the power distribution module (5) into 200V-750V direct current and output it to the split-type charging pile;

[0023] The electric energy management module (9) is connected to the 20kW intelligent high-frequency switching power supply (8) and is used to manage the harmonics generated during the operation of the intelligent high-frequency switching power supply (8) and transmit the managed energy back to the distribution module (5).

[0024] Furthermore, the power distribution module (5) comprises: an incoming line circuit breaker (10), an AC contactor (11) and the protection module (7), and the protection module (7) comprises: a lightning arrester (12) and a leakage protection switch (13);

[0025] The incoming line circuit breaker (10) is used to control the on and off of the AC380V alternating current working power input;

[0026] The lightning arrester (12) is connected to the incoming circuit breaker (10) and is used to protect the entire charging system from being struck by lightning or by instantaneous high voltage.

[0027] The leakage protection switch (13) is connected to the incoming circuit breaker (10) and is used to prevent a person from touching the cabinet and getting an electric shock;

[0028] The AC contactor (11) is connected to the incoming circuit breaker (10) and is used to control the AC380V AC input;

[0029] The AC contactor (11) is also connected to the charging module (4) and is used to control the power input of the charging module.

[0030] Furthermore, a water immersion sensor (14) is installed in the charging rectifier cabinet to collect water immersion information in the cabinet.

[0031] Furthermore, the split-type charging pile includes a charging logic control module (a), a DC metering device (b), a charging connection cable including a vehicle plug (c), an auxiliary power supply (d), a card reader (e), and a human-computer interaction device (f);

[0032] The charging logic control module (a)

[0033] Connected to the DC metering device (b) to obtain charging metering information,

[0034] Connected to the card reader (e) to transmit user authentication information,

[0035] Connected to the human-computer interaction device (f) to obtain user input information and display the charging solution to the user,

[0036] Connected to the auxiliary power supply (d) to control the working state of the auxiliary power supply.

[0037] connected to a charging connection cable (c) including a vehicle plug, for obtaining charging demand information of the vehicle;

[0038] The DC metering device (b) is connected to a charging connection cable (c) including a vehicle plug and is used to measure the output DC power;

[0039] The auxiliary power supply (d) is connected to a charging connection cable (c) including a vehicle plug, and is used to output working power to the vehicle.

[0040] A control method for a power intelligent distribution charging system, comprising:

[0041] New vehicles are added to the allocation process, including:

[0042] Obtain the remaining power of the charging station in the current cycle, and determine the charging plan based on the incentive factor μ according to the remaining power. The incentive factor μ is used to determine the charging priority. The larger the incentive factor μ, the higher the charging priority.

[0043] According to the user's selection, a charging scheme with a specific incentive factor μ is determined to charge the electric vehicle;

[0044] The dynamic power allocation process (PN maximum does not exceed the rated power of the charging station) includes:

[0045] Obtain the total power PN of the power distribution network allocated to the charging station in the current cycle and the current power PC used by the charging station;

[0046] Generate a new charging plan based on the incentive factor μ according to the distribution network limited total power PN allocated to the charging station in the current cycle;

[0047] If PN ≥ PC, charging is performed according to the new charging plan;

[0048] If PN is less than PC, the incentive factors μ corresponding to all electric vehicles being charged at the charging station are obtained, and the charging power of the electric vehicle with the smallest incentive factor μ is reduced first. If PN is still less than PC when the reduced charging power reaches the preset minimum power, the charging power of the electric vehicle with the second smallest incentive factor μ is further reduced based on the preset minimum power, and so on, until PN≥PC is satisfied and dynamic power allocation is completed.

[0049] The beneficial effects achieved by the present invention are:

[0050] The system of the present invention divides the internal devices and components into different module areas according to their functions, and formulates a unified connection specification between the module areas, which has the advantages of flexible combination and convenient expansion. Combined with ergonomics, the overall appearance size of the equipment is reasonably designed to facilitate user operation and enhance user experience. The wiring is separated by strong and weak electricity, and the operation is safe and reliable.

[0051] The method of the present invention effectively utilizes the existing distribution network infrastructure, avoids the potential harm of disordered electric vehicle charging behavior to the power grid, and achieves the purpose of ensuring the economic efficiency of operation, reducing the investment cost of charging facility operators, and meeting the needs of charging customers to the greatest extent. Combining the user's own needs and the power limit of the power grid, a new car joining allocation algorithm and a power intelligent allocation algorithm are formulated. Taking the charging power and charging time of the charging station as the research object, using a dynamic mathematical model, and increasing the incentive factor, this technology can meet the diverse charging needs of users under limited conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is the structural diagram of the charging rectifier cabinet;

[0053] Figure 2 This is the structure diagram of the split charging pile;

[0054] Figure 3 It is the system structure diagram of group control charging unit;

[0055] Figure 4 It is a flowchart of the new car joining allocation algorithm;

[0056] Figure 5 It is a flowchart of the dynamic power allocation algorithm. DETAILED DESCRIPTION

[0057] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] (1) The hardware description is as follows:

[0059] A power intelligent distribution charging system includes several group control charging units. The group control charging unit is typically configured with one power intelligent distribution unit, one charging rectifier cabinet, and two split charging piles. Figure 1-3 As shown,

[0060] A power intelligent distribution charging system, comprising: a charging rectifier cabinet and a plurality of split charging piles, characterized in that:

[0061] The charging rectifier cabinet is equipped with: a power controller 1, a power switching module 2, a power intelligent distribution unit 3, a charging module 4, and a power distribution module 5;

[0062] The power intelligent distribution unit 3

[0063] Communicate with the management platform to obtain power distribution limit information,

[0064] Connected to the split charging pile and the power controller 1 respectively, for transmitting vehicle charging demand information and power dynamic adjustment information respectively;

[0065] The power controller 1

[0066] Connected to the power distribution module 5, used to obtain the working status information of the power distribution module and transmit power output control information,

[0067] Connected with the charging module 4 to transmit power adjustment information;

[0068] Connected to the power switching module 2, used to transmit information for adjusting the number of charging modules;

[0069] The power distribution module 5 is used to provide working power to the power intelligent distribution unit 3, the split charging pile, the charging module 4, the power switching module 2, and the power controller 1;

[0070] The charging module 4 is used to convert the AC380V alternating current provided by the power distribution module 5 into 200V-750V direct current and output it to the split charging pile;

[0071] The power switching module 2 is used to obtain the dynamic adjustment instruction of the power intelligent distribution unit 3, and arbitrarily switch the output of each charging module 5 at the charging connection output end of the split charging pile;

[0072] The split-type charging pile is used to receive charging demand information and charge the vehicle.

[0073] Furthermore, the charging rectifier cabinet also includes: a heat dissipation module 6 and a protection module 7;

[0074] The heat dissipation module 6 is used to dissipate heat for the modules in the charging rectifier cabinet;

[0075] The protection module 7 is used for lightning protection and leakage protection.

[0076] Furthermore, the charging module 4 includes: a 20kW intelligent high-frequency switching power supply 8 and an electric energy management module 9,

[0077] The 20kW intelligent high-frequency switching power supply 8 is used to convert the AC380V alternating current provided by the power distribution module 5 into 200V-750V direct current and output it to the split-type charging pile;

[0078] The electric energy management module 9 is connected to the 20kW intelligent high-frequency switching power supply 8 and is used to manage the harmonics generated during the operation of the intelligent high-frequency switching power supply 8 and transmit the managed energy back to the distribution module 5.

[0079] Furthermore, the power distribution module 5 includes: an incoming circuit breaker 10, an AC contactor 11 and the protection module 7, and the protection module 7 includes: a lightning arrester 12 and a leakage protection switch 13;

[0080] The incoming circuit breaker 10 is used to control the on and off of the AC380V AC working power input;

[0081] The lightning arrester 12 is connected to the incoming circuit breaker 10 to protect the entire charging system from being struck by lightning or instantaneous high voltage;

[0082] The leakage protection switch 13 is connected to the incoming circuit breaker 10 to prevent people from touching the cabinet and getting an electric shock;

[0083] The AC contactor 11 is connected to the incoming circuit breaker 10 and is used to control the AC380V AC input;

[0084] The AC contactor 11 is also connected to the charging module 4 for controlling the power input of the charging module.

[0085] Furthermore, a water sensor 14 is installed in the charging rectifier cabinet to collect water information in the cabinet.

[0086] Furthermore, the split-type charging pile includes a charging logic control module a, a DC metering device b, a charging connection cable c including a vehicle plug, an auxiliary power supply d, a card reader e, and a human-computer interaction device f;

[0087] The charging logic control module a

[0088] Connected to DC metering device b to obtain charging metering information.

[0089] Connected to the card reader e to transmit user authentication information,

[0090] Connected to the human-computer interaction device f, used to obtain user input information and show the charging solution to the user,

[0091] Connected to the auxiliary power supply d, used to control the working state of the auxiliary power supply,

[0092] Connected to the charging connection cable c including the vehicle plug, for obtaining the charging demand information of the vehicle;

[0093] The DC metering device b is connected to a charging connection cable c including a vehicle plug and is used to measure the output DC power;

[0094] The auxiliary power supply d is connected to a charging connection cable c including a vehicle plug, and is used to output working power to the vehicle;

[0095] The power intelligent distribution unit communicates with the management platform via network cable or wireless to obtain power distribution limit information. At the same time, it interacts with the power controller to obtain vehicle charging demand and power dynamic adjustment information.

[0096] The charging rectifier cabinet includes a power controller, a power switching module, a power intelligent distribution unit, a charging module, a power distribution system, a heat dissipation system, a protection module, and an integrated power management module.

[0097] The power distribution system uses a 380V power supply access and is equipped with an incoming circuit breaker, AC contactor, lightning arrester, and leakage protection switch to provide working power to the charging module, power intelligent distribution unit, split charging pile and other equipment.

[0098] The charging module uses a 20kW intelligent high-frequency switching power supply with a wide voltage output range (200V to 750V) and a wide temperature operating range (-30℃ to 65℃), which can meet the charging needs of various types of passenger cars and commercial vehicles at the same time, and adapt to the high and low temperature working environment in different regions. The charging module integrates an electric energy management module to ensure the quality of the electric energy.

[0099] The power switching module is composed of high-voltage DC contactors, and according to the dynamic adjustment instructions of the power intelligent distribution unit, the output of each charging module can be switched arbitrarily at the 4-way charging connection output end, thereby realizing dynamic power adjustment and distribution of the 4-way charging connection output.

[0100] The power controller is controlled by a single-chip microcomputer and communicates with the charging module, power switching module and power intelligent distribution unit. It implements system control strategy: real-time control of charging power output and uploads charging module status and alarm information.

[0101] A cooling system is installed in the charging rectifier cabinet to prevent dangerous temperatures from being too high, and a water sensor is also installed to prevent water accumulation.

[0102] (2) The software description is as follows:

[0103] In order to effectively utilize the existing distribution network infrastructure, avoid the adverse effects of disordered charging on the peak-to-valley difference of the power grid load, and the disadvantages of long charging time and high cost for users, this patent designs a dynamic power allocation strategy for charging. First, users choose variable charging power according to their own needs, and second, changes in the power limit of the power grid will cause the size of the charging power output by the charging pile. This allocation strategy is based on time-of-use electricity prices. According to the structural layout of cluster charging piles, it introduces the allocation algorithm for new cars and the dynamic power allocation algorithm. The charging power and charging time of the entire cluster charging station are taken as the research objects. The dynamic mathematical model is used to comprehensively consider factors such as the dynamic changes of the vehicle SOC and the limited power of the charging station. At the same time, according to the differences in user charging needs, the concept of incentive factors is cited. The incentive factor refers to the user's self-selection of charging priority during the charging process. Different setting values ​​of the utilization factor will generate different charging powers, which will then generate dynamic charging costs. Such a dynamic allocation strategy can fully utilize the power distribution capacity of the power grid to supply the charging station, while minimizing the loss of the power grid, meeting the diversified charging needs of different users, reducing the charging costs of users, alleviating the pressure of charging stations during peak power consumption, and improving the charging efficiency of charging stations.

[0104] Due to the large number of charging vehicle models and different user charging needs, charging piles use time-of-use electricity prices and formulate charging fee standards. In order to efficiently meet the user's charging needs and plan a reasonable charging time and the optimal charging cost, this patent proposes an incentive factor μ, and sets the charging priority according to the size of μ. The quantified value will better demonstrate the relationship between the incentive factor and the charging cost and charging time. According to the actual number of charging guns in the cluster charging station, μ is set to 1 to 4, corresponding to the four-speed unique charging schemes of the human-computer interaction terminal I to IV, for users to view and choose. The larger the incentive factor, the higher the charging priority, and then the allocated charging power is clarified.

[0105] Assume that a day is divided into four time periods, and the corresponding charging electricity charges are peak, flat and valley: C t , C h , C n , C l .

[0106]

[0107] Among them, t1 is zero o'clock, t5 is 24 o'clock, and t2, t3, and t4 are time points that increase successively between t1 and t5.

[0108] Then the total charging cost is C charg The calculation is as follows:

[0109] C charg =C u *(1-SOC)*Q*(k*μ+b)

[0110] Where Q is the total capacity of the vehicle battery. k is the growth rate of the incentive factor, which is 0.25. b is the charging cost correction parameter, which is determined according to the actual situation and is 0.5. The number of charging piles in a single cluster charging station is 4, and the charging powers are P1, P2, P3, and P4 respectively. At a certain moment, the total power of the charging station is

[0111]

[0112] Assume P charg The charging power allocated to the charging pile, P max The maximum power required by an electric vehicle can be expressed as:

[0113]

[0114] When μ is 4, the maximum charging power is obtained; when μ is 1, the minimum charging power is obtained, that is, P charg =0.1*P max .

[0115] The total charging time T is:

[0116]

[0117] If the user needs to meet his charging needs in the shortest time, the charging time T value set by the user must be no less than

[0118] The dynamic power allocation strategy of the charging station consists of three parts: the new car joining allocation algorithm, the dynamic power allocation algorithm and the single-gun minimum power algorithm. The single-gun minimum power algorithm means that no matter how the power is allocated, each gun can output the minimum power set by the algorithm (this power is less than the minimum required power of most vehicles). The new car joining allocation algorithm refers to how the vehicles to be charged can quickly enter the charging parking space, and the dynamic power allocation algorithm indicates how the charging pile updates the charging power in real time during the charging process.

[0119] The single-gun minimum power algorithm means that no matter how the power is distributed, each gun can output the minimum power set by the algorithm (this power is lower than the minimum required power of most vehicles).

[0120] The new car joining allocation algorithm is mainly to solve how charging vehicles with different needs can quickly join the charging sequence and maximize the use of charging facilities. Before starting charging, obtain the remaining power of the charging station in the current cycle, and determine the charging plan based on the incentive factor μ according to the remaining power. The incentive factor μ is used to determine the charging priority. The larger the incentive factor μ, the higher the charging priority; according to the user's choice, determine the specific incentive factor μ charging plan for charging electric vehicles. The flowchart is as follows Figure 4 .

[0121] The dynamic power allocation algorithm mainly solves the problem of how to adjust the output power allocation of each charging gun in real time and dynamically under the condition that the rated total power of the charging station and the vehicle SOC are both dynamically changing, so as to reasonably allocate the power allocated to the charging piles to the maximum extent. The entire cluster charging station dynamically detects the distribution power and the SOC information of all charging vehicles at a certain refresh period T. Due to the peak and low power consumption of the distribution system, the allocated power will change. Obtain the total power PN of the distribution network allocated to the charging station in the current cycle and the current power used by the charging station PC; generate a new charging plan based on the incentive factor μ according to the total power PN of the distribution network allocated to the charging station in the current cycle; if PN ≥ PC, charge according to the new charging plan; if PN < PC, obtain the incentive factor μ corresponding to all electric vehicles being charged at the charging station, and give priority to reducing the charging power of the electric vehicle with the smallest incentive factor μ. If the reduced charging power reaches the preset minimum power, PN is still less than PC, then based on the preset minimum power, continue to reduce the charging power of the electric vehicle with the second smallest incentive factor μ, and so on, until PN ≥ PC is satisfied, and dynamic power allocation is completed. The flowchart is as follows Figure 5 .

[0122] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0123] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power intelligent distribution charging system, comprising: a charging rectifier cabinet and a plurality of split charging piles, characterized in that in the charging rectifier cabinet, there are installed: a power controller (1), a power switching module (2), a power intelligent distribution unit (3), a charging module (4), and a power distribution module (5); the power intelligent distribution unit (3) communicates with the management platform and is used to obtain power distribution limit information, the power intelligent distribution unit (3) is respectively connected to the split charging piles and the power controller (1) and is used to respectively transmit vehicle charging demand information and power dynamic regulation information; the power controller (1) is connected to the power distribution module (5) and is used to obtain the working state information of the power distribution module and transmit power supply output control information, the power controller (1) is connected to the charging module (4) and is used to transmit power regulation information; the power controller (1) is connected to the power switching module (2) and is used to transmit information for adjusting the number of charging modules; the power distribution module (5) is used to provide working power for the power intelligent distribution unit (3), the split charging piles, the charging module (4), the power switching module (2), and the power controller (1); the charging module (4) is used to convert the AC380V alternating current provided by the power distribution module (5) into direct current of 200V - 750V and output it to the split charging piles; the power switching module (2) is used to obtain the dynamic regulation instruction of the power intelligent distribution unit (3) and arbitrarily switch the output of each charging module (4) at the charging connection output end of the split charging piles; the split charging piles are used to receive charging demand information and charge the vehicle; It further includes a power intelligent distribution method, including: The process of new vehicle joining the distribution, including: Obtain the remaining power of the charging station in the current cycle, and determine a charging scheme based on the incentive factor μ according to the remaining power. The incentive factor μ is used to determine the charging priority, and the larger the incentive factor μ, the higher the charging priority; According to the user's selection, determine the charging scheme with the specific incentive factor μ to charge the electric vehicle; The process of dynamic power distribution, including: Obtain the total power limit PN of the power distribution network allocated to the charging station in the current cycle and the power PC already used by the charging station in the current cycle; Generate a new charging scheme based on the incentive factor μ according to the total power limit PN of the power distribution network allocated to the charging station in the current cycle; If PN ≥ PC, then charge according to the new charging scheme; If PN < PC, then obtain the incentive factor μ corresponding to all the electric vehicles charging at the charging station, and preferentially reduce the charging power of the electric vehicle with the smallest incentive factor μ. If the reduced charging power reaches the preset minimum power and PN is still less than PC, then continue to reduce the charging power of the electric vehicle with the second smallest incentive factor μ on the basis of the preset minimum power, and so on, until PN ≥ PC is satisfied to complete the dynamic power distribution.

2. The power intelligent distribution charging system according to claim 1, characterized in that the charging rectifier cabinet further includes: a heat dissipation module (6) and a protection module (7); the heat dissipation module (6) is used to dissipate heat for the modules in the charging rectifier cabinet; The protection module (7) is used for lightning protection and leakage protection.

3. The intelligent power distribution charging system according to claim 1, wherein, the charging module (4) includes: a 20kW intelligent high-frequency switching power supply (8) and a power quality management module (9), the 20kW intelligent high-frequency switching power supply (8) is used for converting the AC380V alternating current provided by the power distribution module (5) into direct current of 200V - 750V and outputting it to the split-type charging pile; the power quality management module (9) is connected to the 20kW intelligent high-frequency switching power supply (8), and is used for managing the harmonics generated during the operation of the intelligent high-frequency switching power supply (8) and transmitting the managed energy back to the power distribution module (5).

4. The intelligent power distribution charging system according to claim 2, wherein, the power distribution module (5) includes: an incoming line circuit breaker (10), an AC contactor (11) and the protection module (7), and the protection module (7) includes: a lightning arrester (12) and a leakage protection switch (13); the incoming line circuit breaker (10) is used for controlling the on-off of the input of the AC380V alternating current working power supply; the lightning arrester (12) is connected to the incoming line circuit breaker (10); the leakage protection switch (13) is connected to the incoming line circuit breaker (10); the AC contactor (11) is connected to the incoming line circuit breaker (10) and is used for controlling the input of the AC380V alternating current; the AC contactor (11) is also connected to the charging module (4) and is used for controlling the power input of the charging module.

5. The intelligent power distribution charging system according to claim 1, wherein, a water immersion sensor (14) is installed in the charging rectifier cabinet for collecting the water immersion information in the cabinet.

6. The intelligent power distribution charging system according to claim 1, wherein, the split-type charging pile includes a charging logic control module (a), a DC metering device (b), a charging connection cable with a vehicle plug (c), an auxiliary power supply (d), a card reader (e), and a human-computer interaction device (f); the charging logic control module (a) is connected to the DC metering device (b) for obtaining charging metering information, the charging logic control module (a) is connected to the card reader (e) for transmitting user authentication information, the charging logic control module (a) is connected to the human-computer interaction device (f) for obtaining user input information and presenting a charging plan to the user, the charging logic control module (a) is connected to the auxiliary power supply (d) for controlling the working state of the auxiliary power supply, the charging logic control module (a) is connected to the charging connection cable with a vehicle plug (c) for obtaining the charging demand information of the vehicle; the DC metering device (b) is connected to the charging connection cable with a vehicle plug (c) for outputting the metering of DC electric energy; the auxiliary power supply (d) is connected to the charging connection cable with a vehicle plug (c) for outputting a working power supply to the vehicle.

7. A control method for an intelligent power distribution charging system, wherein, it includes: The process of a new vehicle joining the distribution, including: Obtain the remaining power of the charging station in the current period, and determine a charging plan based on the incentive factor μ according to the remaining power. The incentive factor μ is used to determine the charging priority, and the larger the incentive factor μ, the higher the charging priority; According to the user's selection, determine a specific charging plan with the incentive factor μ to charge the electric vehicle; The dynamic power distribution process includes: Obtain the total power limit PN of the distribution network allocated to the charging station in the current period and the power PC currently used by the charging station; Generate a new charging plan based on the incentive factor μ according to the total power limit PN of the distribution network allocated to the charging station in the current period; If PN≥PC, perform charging according to the new charging plan; If PN<PC, obtain the incentive factor μ corresponding to all the electric vehicles charging at the charging station, and preferentially reduce the charging power of the electric vehicle with the smallest incentive factor μ. If the reduced charging power reaches the preset minimum power and PN is still less than PC, then continue to reduce the charging power of the electric vehicle with the second smallest incentive factor μ on the basis of the preset minimum power, and so on, until PN≥PC is satisfied to complete the dynamic power distribution.

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