Matrix split-type direct-current charging stack and power allocation method therefor

Abstract

The present invention relates to the technical field of charging stacks. Disclosed are a matrix split-type direct-current charging stack and a power allocation method therefor. The charging stack comprises: a power control unit, which is configured to control the power output of the charging stack on the basis of connection information of charging guns; a charging module unit, which is connected to the power control unit; a matrix power allocation unit, which is connected to the charging module unit, and is controlled by a power allocation main board to switch and combine direct-current electric energy outputted by the charging module unit onto a required direct-current bus and transmit the electric energy via high-voltage cables to the charging guns in a terminal cabinet for vehicle-side charging; a terminal control unit, which is connected to the matrix power allocation unit; and a human-machine interaction unit, which is connected to the power control unit. In the present invention, the power output of a charging stack can be accurately controlled on the basis of connection information of charging guns, thereby realizing efficient electric energy allocation, optimizing the charging process, avoiding the power output imbalance in traditional charging stacks, and improving the charging efficiency.

Description

Matrix split type direct current charging pile and power distribution method thereof TECHNICAL FIELD

[0001] The present application relates to the technical field of charging piles, in particular to a matrix split type direct current charging pile and a power distribution method thereof. BACKGROUND

[0002] The market of electric vehicles is growing rapidly, and the charging technology of new energy vehicles is updated rapidly. The demand for charging is increasing, the power of the traditional charging pile scheme is fixed, the charging efficiency is low, there is no expansion in the later stage, and it is difficult to meet the demand of the future charging market.

[0003] The integrated direct current charging pile is generally divided into single gun and double gun. At present, the power demand of vehicle charging in the market is developing towards high power. The charging power of the vehicle will be limited by the rated power of the charging pile (except for small power demand), thereby affecting the charging speed. Vehicles with high power demand cannot call the resources of the closed charging pile, which will cause low charging efficiency and slow charging speed; waste of charging pile data and lengthening of the investment return period.

[0004] Therefore, it is necessary to provide a matrix split type direct current charging pile and a power distribution method thereof to solve the problem of low charging efficiency of the charging pile in the prior art. SUMMARY

[0005] In view of this, the present application provides a matrix split type direct current charging pile and a power distribution method thereof, which aims to solve the problem of low charging efficiency of the charging pile in the prior art.

[0006] In one aspect, the present application provides a matrix split type direct current charging pile, comprising:

[0007] A power control unit configured to control the output of the charging pile power according to the connection information of the charging gun;

[0008] A charging module unit connected with the power control unit, the charging module unit is used for outputting electric energy;

[0009] A matrix power distribution unit connected with the charging module unit, the matrix power distribution unit is controlled by a power distribution mainboard, and direct current electric energy output by the charging module unit is cut and connected to a required direct current bus, and is conducted to the charging gun of the terminal cabinet through a high-voltage cable to charge the vehicle end;

[0010] A terminal control unit connected with the matrix power distribution unit, the terminal control unit is provided with a plurality of charging terminals, and a main control board of the terminal control unit communicates with the vehicle end to collect and transmit the required electric quantity information of the vehicle end to a cloud platform, so that the cloud platform and the power distribution mainboard control the output on-off, information collection, insulation detection and energy transmission of the charging pile in real time, and display the control information through a terminal display screen.

[0011] A human-computer interaction unit connected to the power control unit, the human-computer interaction unit comprising a display screen, a card reader and an indicator light; the human-computer interaction unit is configured to display information through the display screen, set and modify charging parameters, display the current charging pile state through the indicator light, and read card information through the card reader;

[0012] An AC input unit connected to the charging module unit, the AC input unit being used to provide electrical isolation and circuit protection for the charging module.

[0013] Further, the matrix split type direct current charging pile further comprises:

[0014] A lightning protection unit connected to the AC input unit;

[0015] An auxiliary unit connected to the power control unit, the auxiliary unit being used to connect the circuit of each unit;

[0016] A security unit connected to the power control unit, the charging module unit, the matrix power distribution unit, the terminal control unit, the AC input unit, the lightning protection unit, the human-computer interaction unit and the auxiliary unit, the security unit being used to provide circuit protection for each unit connected thereto.

[0017] Further, when the power control unit is configured to control the output of the charging pile power according to the connection information of the charging gun, it comprises:

[0018] Collecting the connection information and the pre-set charging mode, and controlling the distribution and output of the charging pile power according to the connection information and the charging mode;

[0019] The connection information comprises the number of charging guns in use and the use time of each vehicle end; the charging mode comprises an equal charging mode, a primary and secondary charging mode and at least one module charging mode.

[0020] Further, when the connection information and the pre-set charging mode are collected, and the distribution and output of the charging pile power are controlled according to the connection information and the charging mode, it comprises:

[0021] If the charging mode is an equal charging mode, the number of charging guns in use of the charging pile is collected;

[0022] The output power of each charging gun is calculated; wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile;

[0023] The electrical energy of the charging pile is distributed and output according to the output power of each charging gun.

[0024] Further, when the connection information and the pre-set charging mode are collected, and the distribution and output of the power of the charging pile are controlled according to the connection information and the charging mode, the method comprises:

[0025] If the charging mode is the primary and secondary charging mode, the use time of each vehicle end is collected, and the use time of each vehicle end is arranged in descending order;

[0026] The charging gun connected to the vehicle end with the shortest use time is used as the secondary charging gun, and the charging gun other than the secondary charging gun is used as the primary charging gun;

[0027] The minimum output power of the charging pile is set, and the minimum output power of the charging pile is distributed to the secondary charging gun;

[0028] The remaining output power of the charging pile is calculated, the remaining output power of the charging pile is evenly distributed to obtain the average output power of the primary charging gun, and the average output power of the primary charging gun is distributed to the primary charging gun.

[0029] Further, when the connection information and the pre-set charging mode are collected, and the distribution and output of the power of the charging pile are controlled according to the connection information and the charging mode, the method comprises:

[0030] If the charging mode is the at least one module charging mode, the use time of each vehicle end is collected, and the use time of each vehicle end is arranged in descending order, and the power input priority of each vehicle end is lowered in turn as the use time of each vehicle end is arranged in descending order;

[0031] The output power of each charging gun is calculated, wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile;

[0032] If there is a charging gun not connected to a vehicle end, the output power of the charging gun is distributed to the charging gun connected to the vehicle end according to the input priority.

[0033] Further, when the connection information and the pre-set charging mode are collected, and the distribution and output of the power of the charging pile are controlled according to the connection information and the charging mode, the method comprises:

[0034] If there is a charging gun not connected to a vehicle end, the output power of the charging gun is distributed to the charging gun with the highest input priority;

[0035] If there are at least two charging guns not connected to a vehicle end, the number of charging guns not connected to a vehicle end is counted, and the output power of the charging gun not connected to a vehicle end is distributed to the charging gun connected to a vehicle end in turn according to the input priority from high to low;

[0036] Wherein, the output power of one charging gun not connected to a vehicle end is distributed to one charging gun connected to a vehicle end.

[0037] Further, the communication protocol of the charging stack includes:

[0038] CAN2.0 communication, RS485 communication and RS232 communication.

[0039] Further, the communication protocol of the charging stack includes:

[0040] The matrix power distribution unit and the charging module unit and the terminal control unit adopt CAN2.0 communication;

[0041] The terminal control unit and the vehicle end BMS adopt CAN2.0 communication;

[0042] The terminal control unit and the electric energy meter adopt RS485 communication;

[0043] The terminal control unit and the display screen and the card reader adopt RS232 communication;

[0044] The matrix power distribution unit and the display screen adopt RS232 communication.

[0045] In another aspect, the application also provides a matrix split type direct current charging stack power distribution method, comprising:

[0046] Collecting the connection information of the charging gun and the pre-set charging mode, and controlling the distribution and output of the charging stack power according to the connection information and the charging mode; wherein the connection information of the charging gun includes the number of charging guns used and the use time of each vehicle end; the charging mode includes the uniform charging mode, the primary and secondary charging mode and at least one module charging mode;

[0047] If the charging mode is the uniform charging mode, the number of charging guns of the charging stack is collected; the output power of each charging gun is calculated; wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging stack; the electric energy of the charging stack is distributed and output according to the output power of each charging gun;

[0048] If the charging mode is the primary and secondary charging mode, the use time of each vehicle end is collected, and the use time of each vehicle end is arranged in descending order; the charging gun connected to the vehicle end with the shortest use time is used as the secondary charging gun, and the charging gun connected to the vehicle end with the longest use time is used as the primary charging gun; the minimum output power of the charging stack is set, and the minimum output power of the charging stack is distributed to the secondary charging gun; the remaining charging stack output power is calculated, the remaining charging stack output power is evenly divided to obtain the average output power of the primary charging gun, and the average output power of the primary charging gun is distributed to the primary charging gun;

[0049] If the charging mode is at least one module charging mode, the use time of each vehicle end is collected, the use time of each vehicle end is arranged in descending order, and the power input priority of each vehicle end is lowered in turn as the use time of each vehicle end is sorted in descending order; the output power of each charging gun is calculated, wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile; if there is a charging gun not connected to a vehicle end, the output power of the charging gun is distributed to the charging guns connected to the vehicle end according to the input priority.

[0050] Compared with the prior art, the beneficial effects of the present application are as follows: first, through the cooperation of the power control unit and the matrix power distribution unit, the present application can accurately control the output of the charging pile power according to the connection information of the charging gun, realize efficient distribution of electric energy, optimize the charging process, avoid the uneven phenomenon of power output in the traditional charging pile, and improve the charging efficiency. Secondly, the diversification of the charging mode provides a flexible power distribution method, ensures that the vehicle end with different charging needs can obtain the best charging power, improves the charging efficiency and prolongs the service life of the equipment. Especially in the primary and secondary charging mode, through dynamic power distribution according to the use time of the vehicle end, the charging demand of the high-priority vehicle end can be preferentially guaranteed, and the power of the secondary charging gun can be reasonably distributed, avoiding resource waste. The matrix power distribution technology can also realize on-demand distribution according to the needs of different modules, further improving the scalability and flexibility of the system. In addition, the intelligent design of the man-machine interaction unit and the terminal control unit enables users to monitor the charging state in real time, obtain relevant data, and remotely control through the cloud platform, further enhancing the intelligent management and operation convenience of the system, and having high practical value and technical advancement. BRIEF DESCRIPTION OF DRAWINGS

[0051] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for purposes of illustration only and are not considered a limitation of the present application. Moreover, like reference numerals are used to designate like parts throughout the specification and drawings. In the drawings:

[0052] Fig. 1 is a system principle diagram of the matrix split type direct current charging pile provided by the embodiment of the present application;

[0053] Fig. 2 is a principle diagram of the matrix power distribution unit provided by the embodiment of the present application;

[0054] Fig. 3 is a use flow chart of the matrix split type direct current charging pile provided by the embodiment of the present application;

[0055] Fig. 4 is a flow chart of the power distribution method of the matrix split type direct current charging pile provided by the embodiment of the present application. DETAILED DESCRIPTION

[0056] Exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood, and the scope of the present disclosure can be accurately conveyed to those skilled in the art. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0057] In some embodiments of the present application, referring to FIGS. 1-2, FIG. 1 is a schematic diagram of a matrix split type direct current charging pile system according to an embodiment of the present application; and FIG. 2 is a schematic diagram of a matrix power distribution unit according to an embodiment of the present application. The present embodiment provides a matrix split type direct current charging pile, which comprises:

[0058] a power control unit configured to control the output of the charging pile power according to the connection information of the charging gun;

[0059] a charging module unit connected with the power control unit, the charging module unit being configured to output electric energy;

[0060] a matrix power distribution unit connected with the charging module unit, the matrix power distribution unit being controlled by a power distribution mainboard, and the matrix power distribution unit is configured to cut and distribute the direct current electric energy output by the charging module unit to a required direct current bus, and then conduct the direct current electric energy to the charging gun of the terminal cabinet through a high-voltage cable to charge the vehicle end;

[0061] a terminal control unit connected with the matrix power distribution unit, the terminal control unit being provided with a plurality of charging terminals, and a main control board of the terminal control unit is configured to communicate with the vehicle end, collect the required electric quantity information of the vehicle end, and transmit the required electric quantity information to a cloud platform, so that the cloud platform and the power distribution mainboard can control the output on-off, information collection, insulation detection and energy transmission of the charging pile in real time, and display the control information on a terminal display screen;

[0062] a man-machine interaction unit connected with the power control unit, the man-machine interaction unit comprising a display screen, a card reader and an indicator light, and the man-machine interaction unit is configured to display information, set and modify charging parameters through the display screen, display the current charging pile state through the indicator light, and read card information through the card reader;

[0063] an alternating current input unit connected with the charging module unit, the alternating current input unit being configured to provide electrical isolation and circuit protection for the charging module.

[0064] It can be understood that the matrix split type direct current charging stack of the embodiment optimizes charging efficiency and system reliability in multiple aspects. First, the power control unit accurately adjusts the power output of the charging stack according to the connection information of the charging gun, ensures efficient distribution of electric energy and avoids overload or power waste. The cooperation of the charging module unit and the matrix power distribution unit enables the direct current electric energy of the charging stack to be accurately switched to different direct current buses and transmitted to the terminal cabinet through high-voltage cables, realizing flexible charging demand of multiple vehicle terminals. Second, the terminal control unit can collect real-time power demand information of the vehicle terminal and dynamically monitor and control through the cloud platform, realizing remote management, state display and fault alarm of the charging stack, greatly improving the intelligence and operation convenience of the system. The man-machine interaction unit realizes multi-functional interaction of information display, parameter setting and state indication through display screen, card reader and indicator light and other devices, not only enhances the user experience, but also improves the operability and safety of the system. The alternating current input unit provides electrical isolation and circuit protection for the charging module unit, ensuring stable operation of the system in complex electrical environment. Overall, the embodiment provides an efficient, safe and intelligent charging solution, which adapts to diversified charging demand, improves the reliability and flexibility of the system, and meets the development trend of modern electric vehicle charging infrastructure.

[0065] Specifically, referring to FIG. 3, the user starts charging by scanning the code or swiping the card, the operation platform receives the start demand, the platform issues a start charging command to the terminal control unit, and in the charging process, the charging stack starts output power according to the vehicle terminal battery charging demand, the power distribution unit starts output power according to the load state, and the idle charging module is dynamically called according to the predetermined control strategy, and the matrix power distribution unit is controlled to output at the same time. Through the charging gun, it is output to the vehicle terminal. The terminal control unit will transmit the vehicle terminal demand information to the power distribution unit in real time, so that the power distribution unit dynamically adjusts the output power.

[0066] In some embodiments of the present application, the matrix split type direct current charging stack further comprises:

[0067] The lightning protection unit is connected with the alternating current input unit;

[0068] The auxiliary unit is connected with the power control unit, and the auxiliary unit is used to connect the circuit of each unit;

[0069] The security unit is connected with the power control unit, the charging module unit, the matrix power distribution unit, the terminal control unit, the alternating current input unit, the lightning protection unit, the man-machine interaction unit and the auxiliary unit, and the security unit is used for circuit protection for each unit connected therewith.

[0070] It can be understood that the embodiment further enhances the safety and reliability of the matrix split type direct current charging pile by introducing the lightning protection unit, the auxiliary unit and the security protection unit. The lightning protection unit effectively protects the charging pile from lightning and other power surges, ensuring that the equipment can still operate safely in adverse weather conditions. With the assistance of the power control unit, the auxiliary unit realizes the effective connection and coordination of each circuit unit, improving the overall stability of the system. The security protection unit provides comprehensive circuit protection for all connected units of the system, automatically cutting off the power supply in the event of an electrical fault to prevent equipment damage and personal injury, while ensuring the safety of users and charging equipment. In addition, the comprehensive protection function of the security protection unit enhances the system's fault response capability, ensuring continuous and stable operation during the charging process. Overall, these new functions make the charging pile safer and more reliable in the face of various external risks and internal faults, improving the long-term operation life of the system and the trust of users.

[0071] In some embodiments of the present application, when the power control unit is configured to control the output of the charging pile power according to the connection information of the charging gun, it includes:

[0072] Collecting connection information and pre-set charging mode, controlling the distribution and output of the charging pile power according to the connection information and the charging mode;

[0073] Wherein, the connection information includes the number of charging guns in use and the use time of each vehicle end; the charging mode includes the equal charging mode, the primary and secondary charging mode and at least one module charging mode.

[0074] It can be understood that the embodiment dynamically controls the output of the charging pile power according to the connection information of the charging gun and the pre-set charging mode, which can realize more flexible and efficient power distribution. The number of charging guns in use and the use time of each vehicle end as connection information helps to accurately understand the charging demand of each vehicle end and intelligently adjust the power output according to different charging modes. In the equal charging mode, the power of all charging guns is equally distributed, ensuring the fairness of charging; while in the primary and secondary charging mode, the demand of the vehicle end with longer use time is prioritized, optimizing the resource utilization in the charging process; at least one module charging mode further provides flexibility to adapt to different charging demands. This scheme not only improves the charging efficiency, but also dynamically adjusts the power distribution according to the actual situation, avoiding problems such as overload and power waste in the charging process, greatly improving the intelligence and reliability of the system.

[0075] In some embodiments of the present application, when the connection information and the pre-set charging mode are collected, and the distribution and output of the charging pile power are controlled according to the connection information and the charging mode, it includes:

[0076] If the charging mode is the equal charging mode, the number of charging guns in use of the charging pile is collected;

[0077] calculating the output power of each charging gun; wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile;

[0078] allocating and outputting the electric energy of the charging pile according to the output power of each charging gun.

[0079] It can be understood that when the equal charging mode is adopted, by collecting the number of charging guns in use and calculating the output power of each charging gun, it is ensured that each charging gun obtains the same output power, thereby realizing the fair distribution of power. This way effectively avoids the uneven distribution of power, ensures that multiple vehicle-side charging can enjoy equal charging power, and optimizes the electric energy utilization rate in the charging process. At the same time, by controlling the sum of the output power of all charging guns not to exceed the maximum output power of the charging pile, the overload phenomenon is avoided, and the safety and stability of the system are improved. The scheme improves the operation efficiency and charging fairness of the charging pile, and is especially suitable for the scenario of charging multiple vehicle-side at the same time, ensuring that all charging devices can work efficiently and stably.

[0080] Specifically, by default, 1Q=M1, 2Q=M2, …, 6Q=M6 (1Q=1 gun, M1=1 module, 1M is the adjusted 1 section bus current); 1 gun charging, demand BMS>M1, M1+M2+M3, provided that M2, M3 are idle, and so on.

[0081] In some embodiments of the present application, when collecting the connection information and the pre-set charging mode, and controlling the distribution and output of the charging pile power according to the connection information and the charging mode, it includes:

[0082] If the charging mode is the primary and secondary charging mode, collect the use time of each vehicle-side, and arrange the use time of each vehicle-side in descending order;

[0083] The charging gun connected to the vehicle-side with the shortest use time is taken as the secondary charging gun, and the charging guns other than the secondary charging gun are taken as the primary charging guns;

[0084] Set the minimum output power of the charging pile, and allocate the minimum output power of the charging pile to the secondary charging gun;

[0085] Calculate the remaining charging pile output power, evenly divide the remaining charging pile output power to obtain the primary average output power, and allocate the primary average output power to the primary charging gun.

[0086] It can be understood that in the embodiment, when the primary and secondary charging mode is adopted, the charging resource is ensured to be preferentially allocated to the vehicle end with a longer use time by arranging the use time of each vehicle end in descending order, so that the priority management of charging is realized. By allocating the vehicle end with the shortest use time as the secondary charging gun, the minimum output power of the charging pile is ensured for the secondary charging gun, and the system resources are avoided from being excessively occupied by the secondary charging gun. At the same time, the remaining power is evenly distributed to the primary charging gun, so that the charging power distribution among multiple vehicle ends is more balanced. The scheme can flexibly adjust the charging power, not only optimizes the charging efficiency, but also avoids resource waste, and improves the overall performance and fairness of the system. Through the intelligent distribution mechanism, the charging demand of the vehicle end with a long use time is met, the power output of the secondary charging gun is reasonably controlled, the unbalanced power distribution is avoided, and the charging efficiency and user experience of the system are improved.

[0087] In some embodiments of the present application, the connection information and the pre-set charging mode are collected, and the distribution and output of the charging pile power are controlled according to the connection information and the charging mode, comprising:

[0088] If the charging mode is at least one module charging mode, the use time of each vehicle end is collected, the use time of each vehicle end is arranged in descending order, and the power input priority of each vehicle end is sequentially reduced as the use time of each vehicle end is arranged in descending order;

[0089] The output power of each charging gun is calculated, wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile;

[0090] If there is a charging gun not connected to a vehicle end, the output power of the charging gun is distributed to the charging gun connected to the vehicle end according to the input priority.

[0091] It can be understood that in the embodiment, when at least one module charging mode is adopted, the power input priority of each vehicle end can be dynamically adjusted by arranging the use time of each vehicle end in descending order, so that the vehicle end connected for a long time obtains higher power priority, thereby realizing more reasonable charging resource distribution. At the same time, by calculating the output power of each charging gun and ensuring that the sum of the output power of all charging guns does not exceed the maximum output power of the charging pile, it is ensured that the charging pile will not be overloaded and can fully utilize the available power. If there is a charging gun not connected to a vehicle end, the system will redistribute the output power of the unconnected charging gun according to the power input priority of the vehicle end, so as to optimize the power distribution. The intelligent power distribution mechanism not only improves the overall performance of the charging pile, but also enhances the flexibility and adaptability of the system, so that the charging demand of each vehicle end is reasonably met during the charging process, and power waste is avoided.

[0092] 1 gun charging, 1 gun has been put into the module (1M=M1+M2+M3); 2 gun plug gun charging, detect M2 has been put into 1M bus, at this time 1M=M1-M2+M3, 2M=M2, detect module resources M4, M5, M6 whether idle, prefer to put module resources into 1M, judge 2M current whether to meet 2 gun charging demand less than demand, put idle module into 2M, and so on.

[0093] 4 when charging the guns simultaneously, the highest priority (1Q=M1, 3Q=M3, 5Q=M5, 6Q=M6), the remaining M2, M4 resources are preferentially adjusted to the high-priority charging gun (the order of charging gun charging determines the charging priority of each charging gun; wherein, the earlier the order of charging gun charging, the higher the priority, when detecting that the charging of the high-priority charging gun is completed and disconnected, the priority of other charging guns is correspondingly raised. When detecting that the charging demand of a charging gun decreases, the idle output power is distributed to other charging guns that cannot meet the charging demand and have a higher priority. ) and so on.

[0094] When there are 6 guns with simultaneous charging demand, 1Q=M1, 2Q=M2, 3Q=M3, 4Q=M4, 5Q=M5, 6Q=M6, no power adjustment is performed. 6 guns are charged simultaneously, one of which is fully charged, and the module is withdrawn, and preferentially distributed to the charging gun that needs to increase the module resource (determined by the order of charging, the charging priority of each charging gun), and so on.

[0095] In some embodiments of the present application, if there is a charging gun that is not connected to the vehicle end, the output power of the charging gun is distributed to the charging gun connected to the vehicle end according to the input priority, comprising:

[0096] If there is a charging gun that is not connected to the vehicle end, the output power of the charging gun is distributed to the charging gun with the highest input priority;

[0097] If there are at least two charging guns that are not connected to the vehicle end, the number of charging guns that are not connected to the vehicle end is counted, and the output power of the charging gun that is not connected to the vehicle end is distributed to the charging gun connected to the vehicle end in order of input priority from high to low;

[0098] Among them, the output power of one charging gun that is not connected to the vehicle end is distributed to one charging gun connected to the vehicle end.

[0099] It can be understood that the output power of the unconnected vehicle-side charging gun is intelligently allocated, maximizing the power utilization efficiency of the charging pile. When only one charging gun is unconnected to the vehicle side, its power is allocated to the charging gun with the highest input priority, ensuring that the vehicle side with priority charging can obtain more electric energy; if there are multiple charging guns unconnected to the vehicle side, the number of unconnected charging guns is counted, and the power is allocated in turn according to the input priority, reasonably allocating the charging resources. This allocation method optimizes the charging process of each vehicle side. The output power of each unconnected charging gun is reasonably allocated to the charging gun of the connected vehicle side, ensuring that the charging efficiency of the connected vehicle side is maximized, while avoiding unnecessary power waste, improving the overall resource utilization rate of the charging pile and the stability of the system. This flexible power allocation method enhances the intelligent management of the system and the fairness of the charging process.

[0100] In some embodiments of the present application, the communication protocol of the charging pile includes:

[0101] CAN2.0 communication, RS485 communication and RS232 communication.

[0102] In some embodiments of the present application, the communication protocol of the charging pile includes:

[0103] The matrix power distribution unit, the charging module unit and the terminal control unit all use CAN2.0 communication;

[0104] The terminal control unit and the vehicle-side BMS use CAN2.0 communication;

[0105] The terminal control unit and the electric energy meter use RS485 communication;

[0106] The terminal control unit and the display screen and the card reader use RS232 communication;

[0107] The matrix power distribution unit and the display screen use RS232 communication.

[0108] It can be understood that in the embodiment, by adopting CAN2.0, RS485 and RS232 and other communication protocols, efficient and stable data transmission between each unit of the charging stack is realized. The CAN2.0 protocol is widely used in the communication between the matrix power distribution unit, the charging module unit and the terminal control unit, has high reliability and anti-interference ability, is suitable for use in complex electrical systems, and ensures real-time data exchange and coordinated control between each module of the charging stack. At the same time, the terminal control unit and the vehicle-end BMS adopt CAN2.0 communication, which ensures real-time data transmission of the vehicle-end battery management system, so that the charging process can be dynamically adjusted according to the actual demand of the vehicle-end. The RS485 protocol is used for communication between the terminal control unit and the electric energy meter, supports long-distance and stable data transmission, and is suitable for power metering and monitoring. The RS232 protocol is used for communication between the terminal control unit and the display screen and the card reader, which ensures the interaction function between the user and the system, and facilitates the setting of charging parameters and the display of state. The matrix power distribution unit and the display screen adopt the RS232 protocol, which ensures the instant display of system state and data synchronization. Overall, through the cooperative work of multiple communication protocols, the system can realize flexible and efficient data exchange between different devices, improve the intelligent management and operation convenience of the charging stack, and at the same time ensure the reliability and stability of data transmission.

[0109] On the other hand, referring to FIG. 3, the application also provides a matrix split type direct current charging stack power distribution method, which is applied to the above-mentioned matrix split type direct current charging stack and includes the following steps:

[0110] S100, collecting connection information of the charging gun and a pre-set charging mode, and controlling distribution and output of the charging stack power according to the connection information and the charging mode; wherein the connection information of the charging gun includes the number of charging guns used and the use time of each vehicle-end; the charging mode includes an equal charging mode, a primary and secondary charging mode and at least one module charging mode;

[0111] S200, if the charging mode is the equal charging mode, collecting the number of charging guns of the charging stack; calculating the output power of each charging gun; wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging stack; distributing and outputting the electric energy of the charging stack according to the output power of each charging gun;

[0112] S300, if the charging mode is the primary and secondary charging mode, collect the use time of each vehicle end, arrange the use time of each vehicle end in descending order, connect the charging gun with the shortest use time to the secondary charging gun, and connect the charging gun other than the charging gun with the shortest use time to the primary charging gun; set the minimum output power of the charging pile, and distribute the minimum output power of the charging pile to the secondary charging gun; calculate the remaining output power of the charging pile, and equally distribute the remaining output power of the charging pile to obtain the average output power of the primary charging gun, and distribute the average output power of the primary charging gun to the primary charging gun;

[0113] S300, if the charging mode is the primary and secondary charging mode, collect the use time of each vehicle end, arrange the use time of each vehicle end in descending order, connect the charging gun with the shortest use time to the secondary charging gun, and connect the charging gun other than the charging gun with the shortest use time to the primary charging gun; set the minimum output power of the charging pile, and distribute the minimum output power of the charging pile to the secondary charging gun; calculate the remaining output power of the charging pile, and equally distribute the remaining output power of the charging pile to obtain the average output power of the primary charging gun, and distribute the average output power of the primary charging gun to the primary charging gun;

[0114] It can be understood that the present application significantly improves the charging efficiency and resource utilization rate through flexible charging modes and intelligent power scheduling. In the equal charging mode, the output powers of all charging guns are equal, which ensures the fairness of power distribution during charging and effectively avoids power waste. In the primary and secondary charging mode, more charging power is provided to the vehicle end with a longer use time according to the use time of the vehicle end, which ensures the rationality and efficiency of charging and avoids excessive occupation of resources by the low-priority vehicle end. When the module charging mode is adopted, the power input priority is adjusted according to the use time of the vehicle end, which not only reasonably allocates the charging demand of multiple vehicle ends, but also fully utilizes the power of the charging gun not connected to the vehicle end, optimizes the allocation of electric energy, and improves the overall efficiency and flexibility of the system. This intelligent power distribution mechanism can be dynamically adjusted according to different charging demands, ensures that the maximum output power of the charging pile is fully utilized, avoids resource waste, and improves the safety, reliability and user experience of the system.

[0115] Those skilled in the art will appreciate that embodiments of the present application can be provided as methods, systems or computer program products. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage, etc.) containing computer-usable program code.

[0116] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks.

[0117] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks.

[0118] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks.

[0119] Finally, it should be noted that the above-mentioned embodiments are merely used to illustrate the technical solutions of the present application, rather than limit the present application. Although the present application is described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or replacement without departing from the spirit and scope of the present application should be covered in the protection scope of the claims of the present application.

Claims

1. A matrix split direct current charging stack, characterized by, The application relates to a matrix split type direct current charging pile, which comprises the following parts: a power control unit configured to control the output of charging pile power according to connection information of a charging gun; a charging module unit connected with the power control unit, the charging module unit being used for outputting electric energy; a matrix power distribution unit connected with the charging module unit, the matrix power distribution unit being controlled by a power distribution mainboard, direct current electric energy output by the charging module unit being cut and connected to a required direct current bus, and the direct current electric energy being conducted to a charging gun of a terminal cabinet through a high-voltage cable to charge a vehicle end; a terminal control unit connected with the matrix power distribution unit, the terminal control unit being provided with a plurality of charging terminals, a main control board of the terminal control unit being in communication with the vehicle end to collect and transmit required electric quantity information of the vehicle end to a cloud platform, so that the cloud platform and the power distribution mainboard control the output on-off of the charging pile, information collection, insulation detection and energy transmission in real time, and control information is displayed through a terminal display screen; a man-machine interaction unit connected with the power control unit, the man-machine interaction unit comprising a display screen, a card reader and an indicator light; the man-machine interaction unit is configured to display information, set and modify charging parameters through the display screen, display the current charging pile state through the indicator light and read card information through the card reader; an alternating current input unit connected with the charging module unit, the alternating current input unit being used for providing electrical isolation and circuit protection for the charging module.

2. The matrix split-train DC charging stack of claim 1, wherein, The matrix split type direct current charging pile further comprises: a lightning protection unit connected with the alternating current input unit; an auxiliary unit connected with the power control unit, the auxiliary unit being used for connecting unit circuits; a security unit connected with the power control unit, the charging module unit, the matrix power distribution unit, the terminal control unit, the alternating current input unit, the lightning protection unit, the man-machine interaction unit and the auxiliary unit, the security unit being used for performing circuit protection for the units connected therewith.

3. The matrix split-train DC charging stack of claim 2, wherein, When the power control unit is configured to control the output of charging pile power according to connection information of a charging gun, the following steps are included: collecting the connection information and a pre-set charging mode, and controlling the distribution and output of the charging pile power according to the connection information and the charging mode; wherein the connection information comprises the number of charging guns used and the use time length of each vehicle end; and the charging mode comprises an equal charging mode, a primary and secondary charging mode and at least one module charging mode.

4. The matrix divided direct current charging stack according to claim 3, characterized by, When the connection information and the pre-set charging mode are collected, and the distribution and output of the charging pile power are controlled according to the connection information and the charging mode, the following steps are included: if the charging mode is the equal charging mode, the number of charging guns of the charging pile is collected; the output power of each charging gun is calculated; wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile; the electric energy of the charging pile is distributed and output according to the output power of each charging gun.

5. The matrix divided direct current charging stack according to claim 3, characterized in that, When the connection information and the pre-set charging mode are collected, and the distribution and output of the charging pile power are controlled according to the connection information and the charging mode, the following steps are included: If the charging mode is the primary and secondary charging mode, the use time of each vehicle end is collected, and the use time of each vehicle end is arranged in descending order; The charging gun connected to the vehicle end with the shortest use time is used as the secondary charging gun, and the charging guns other than the secondary charging gun are used as the primary charging gun; The minimum output power of the charging pile is set, and the minimum output power of the charging pile is distributed to the secondary charging gun; The remaining charging pile output power is calculated, the remaining charging pile output power is equally divided to obtain the average output power of the primary, and the average output power of the primary is distributed to the primary charging gun.

6. The matrix split-train DC charging stack of claim 3, wherein, The collection of the connection information and the pre-set charging mode, and the control of the distribution and output of the charging pile power according to the connection information and the charging mode, comprises: If the charging mode is at least one module charging mode, the use time of each vehicle end is collected, and the use time of each vehicle end is arranged in descending order, and the power input priority of each vehicle end is lowered in turn as the use time of each vehicle end is arranged in descending order; The output power of each charging gun is calculated, wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile; If there is a charging gun not connected to the vehicle end, the output power of the charging gun is distributed to the charging gun connected to the vehicle end according to the input priority.

7. The matrix split-train DC charging stack of claim 6, wherein, The collection of the connection information and the pre-set charging mode, and the control of the distribution and output of the charging pile power according to the connection information and the charging mode, comprises: If there is a charging gun not connected to the vehicle end, the output power of the charging gun is distributed to the charging gun with the highest input priority; If there are at least two charging guns not connected to the vehicle end, the number of charging guns not connected to the vehicle end is counted, and the output power of the charging gun not connected to the vehicle end is distributed to the charging gun connected to the vehicle end in turn according to the input priority from high to low; Wherein, the output power of one charging gun not connected to the vehicle end is distributed to one charging gun connected to the vehicle end.

8. The matrix split-train DC charging stack of claim 2, wherein, The communication protocol of the charging pile comprises: CAN2.0 communication, RS485 communication and RS232 communication.

9. The matrix split-train DC charging stack of claim 8, wherein, The communication protocol of the charging pile comprises: The matrix power distribution unit, the charging module unit and the terminal control unit all use CAN2.0 communication; The terminal control unit and the vehicle end BMS use CAN2.0 communication; The terminal control unit and the electric energy meter use RS485 communication; The terminal control unit and the display screen and the card reader use RS232 communication; The matrix power distribution unit and the display screen use RS232 communication.

10. A method for power distribution in a matrix split DC battery charger, applied to a matrix split DC battery charger according to any one of claims 1-9, characterized in that, It comprises: Collecting the connection information of the charging gun and the pre-set charging mode, and controlling the distribution and output of the charging pile power according to the connection information and the charging mode; wherein the connection information of the charging gun comprises the use number of the charging gun and the use time of each vehicle end; the charging mode comprises the uniform charging mode, the primary and secondary charging mode and the at least one module charging mode; If the charging mode is the equal charging mode, the number of charging guns used by the charging pile is collected; the output power of each charging gun is calculated; wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile; the electric energy of the charging pile is distributed according to the output power of each charging gun and output; If the charging mode is the primary and secondary charging mode, the use time of each vehicle end is collected, and the use time of each vehicle end is arranged in descending order; the charging gun connected to the vehicle end with the shortest use time is taken as the secondary charging gun, and the charging gun connected to the vehicle end other than the vehicle end with the shortest use time is taken as the primary charging gun; the minimum output power of the charging pile is set, and the minimum output power of the charging pile is distributed to the secondary charging gun; the remaining charging pile output power is calculated, the remaining charging pile output power is equally divided to obtain the average output power of the primary charging gun, and the average output power of the primary charging gun is distributed to the primary charging gun; If the charging mode is the at least one module charging mode, the use time of each vehicle end is collected, and the use time of each vehicle end is arranged in descending order, and the power input priority of each vehicle end is lowered in turn as the use time of each vehicle end is arranged in descending order; the output power of each charging gun is calculated, wherein the output power of each charging gun is the same, and the sum of the output power of all charging guns is the maximum output power of the charging pile; if there is a charging gun not connected to a vehicle end, the output power of the charging gun is distributed to the charging gun connected to the vehicle end according to the input priority.

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