An intelligent charging system based on comprehensive monitoring and self-control of intelligent control terminals

Abstract

The utility model discloses an intelligent charging system based on comprehensive monitoring and self-control of a smart control terminal, which relates to the field of intelligent power distribution technology and solves the problem in the prior art that the method of evenly distributing the power of charging piles based on the residual power after the community uses electricity will result in too small a current to meet the starting power requirements of some electric vehicles. The utility model includes an intelligent control terminal, a power converter, a total power meter, a sub-pile power meter and a signal acquisition module. Among them, the intelligent control terminal is used to read the total power and the sub-pile power and distribute the power, and issue an execution instruction after the distribution is completed. The sub-pile power meter is used to read the charging pile power and control the on and off of the charging pile. The signal acquisition module is used to collect the plug-in signal of each sub-pile. After distributing the residual power after the residents use electricity, the utility model can distribute the charging power of the charging pile based on the charging starting power of the electric vehicle, ensuring that the power distributed to each charging pile reaches the starting power of the electric vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent power distribution, and in particular to an intelligent charging system based on comprehensive monitoring and automatic control of a smart control terminal. Background Art

[0002] Due to the continuous promotion and popularization of new energy electric vehicles, more and more personal dedicated charging piles are installed, resulting in many urban residential areas facing the situation of "insufficient capacitance", because the owners in the early stage built charging piles, which resulted in insufficient capacity, and the owners who applied later could no longer build charging piles. In this case, the application of intelligent orderly charging technology to guide owners to charge in an orderly manner can better meet the charging needs of residential areas and allow car owners to achieve "charging freedom". At the same time, it can actively respond to the national carbon peak and carbon neutrality goals and implement the decision-making and deployment requirements of the Party Central Committee, the State Council, and local governments on the promotion and application of new energy electric vehicles, accelerate the promotion of charging infrastructure into residential areas, and open up the "last 1 kilometer" that troubles electric vehicle users. It can effectively alleviate residents' charging concerns and solve the power distribution problems in urban residential areas due to insufficient power capacity and difficulty in expansion. The utility model patent with the Chinese patent announcement number CN118163658A specifically discloses a method for orderly charging control of electric vehicles in residential areas, including the following steps: S1. Prediction of conventional load in residential areas: predicting the conventional load of residential areas on the day based on the historical load of the residential areas on typical days; S2. Available power of charging piles: calculating the available power in each time period in addition to the total demand load of the residential areas based on the predicted conventional load of the residential areas and the power supply capacity of the distribution transformers in the residential areas, that is, the total power of the working charging piles in each time period; S3. Collection of user charging information: the charging needs of electric vehicle users are collected by the electric vehicle charging management system Information, including the arrival time, departure time, battery capacity, initial state of charge (SOCcon), maximum state of charge (SOCmax) and minimum state of charge (SOCmin) when the user expects to end charging, and other user information; S4, find the optimal solution: according to the predicted conventional load data of the residential area, the total power of the working charging piles, and the charging needs of the users, solve the optimal charging power of each electric vehicle in each period based on the pre-set control strategy, so as to obtain the optimal charging plan for the electric vehicle; S5, charging pile control: according to the solved charging plan, the output power of the charging pile in each period is controlled, so as to control the orderly charging of the vehicle. It avoids the occurrence of charging interruption of electric vehicle users due to insufficient power supply capacity of the distribution transformer in the residential area, ensures the continuity of the charging process of electric vehicle users as much as possible, and reduces the battery loss of electric vehicles caused by it.

[0003] However, due to the rapid development of new energy electric vehicle technology, more and more new energy electric vehicles are beginning to pursue higher working time efficiency. Nowadays, most new energy electric vehicle charging technologies have starting power restrictions. The optimal solution sought by the above technical solution is to solve the optimal charging power of each electric vehicle in each period based on the predicted conventional load data of the residential area, the total power of the working charging piles, and the charging needs of users based on the pre-set control strategy, and then control the output power of the charging piles in each period according to the solved charging scheme, so as to control the orderly charging of the vehicle. This results in the remaining power after each priority allocation of residents' electricity being evenly distributed to each charging pile. If the allocated power is too little and there are too many electric vehicles being charged, the charging current of each charging pile will be too small. After the gun is plugged in, the electric vehicle will self-check that the current is too small to reach the battery charging starting power and will not perform charging. In severe cases, all charging piles in the community during peak power consumption will not be able to start the charging mechanism of the electric vehicle.

[0004] Based on the deficiencies of the above technologies, the utility model provides an intelligent orderly charging system based on comprehensive monitoring and self-control of a smart control terminal. Utility Model Content

[0005] In view of the problem in the prior art that the way of evenly distributing the power of charging piles based on the residual power after the community uses electricity will result in the current being too small to meet the starting power requirements of some electric vehicles, the utility model provides an intelligent orderly charging system based on comprehensive monitoring and self-control of the intelligent control terminal, which can distribute the charging power of the charging piles based on the charging starting power of the electric vehicles after distributing the residual power after the residents use electricity, and record the order in which the charging vehicles are plugged in, and distribute power to the charging piles in order on the premise of meeting the starting power. The specific technical solution is as follows:

[0006] A smart charging system based on comprehensive monitoring and self-control of a smart control terminal comprises: a smart control terminal, a power converter, a total power meter, a sub-pile power meter and a signal acquisition module; wherein the total power meter is connected between the residential electricity consumption end and the charging pile end of the original community, the power converter is connected to the total power meter, the command and control terminal and the signal acquisition module, the sub-pile power meter and the signal acquisition module are both connected to the charging pile, the smart control terminal is also connected to the total power meter, the sub-pile power meter and the signal acquisition module, and is used to read the total power and sub-pile power and distribute the power, and issue an execution instruction after the distribution is completed, the total power meter is used to read the total available power and distribute the total power of the charging pile, the sub-pile power meter is used to read the charging pile power and control the on and off of the charging pile, and the signal acquisition module is used to collect the plug-in signal of each sub-pile.

[0007] Preferably, there are several sub-pile power meters, and each sub-pile power meter is connected to the intelligent control terminal via a 485 communication line.

[0008] Preferably, several sub-pile power meters are connected in series.

[0009] Preferably, there are several signal acquisition modules, and each signal acquisition module is connected to the intelligent control terminal via a signal acquisition line.

[0010] Preferably, several signal acquisition modules are connected in parallel.

[0011] Preferably, the total power meter leads a 220V circuit to the power converter, the power converter leads out 5V DC power to connect to the smart control terminal, and the power converter also leads out 12V DC power to connect to several signal acquisition modules respectively.

[0012] Preferably, it also includes one 485 communication line, several signal acquisition lines, and several power lines. The total power meter is connected to the incoming line of the residents' electricity in the original community through the power line. The control end of the smart control terminal is respectively connected to the total power meter and several sub-pile power meters through two 485 communication lines. The receiving end of the smart control terminal is connected to the output end of the signal acquisition module arranged in advance inside several charging piles through the signal acquisition line.

[0013] Preferably, the smart control terminal is set by pressing buttons after startup, and the smart control terminal adopts a single-chip microcomputer.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. It adopts industrial standard Modbus communication method, does not require networking equipment, has a simple architecture, and avoids possible signal interference problems in the line, ensuring the security and reliability of interactive information.

[0016] 2. Adopt a rigid power supply allocation strategy to give priority to the electricity use of residents in the community. No matter how many electric vehicles enter the community to charge, it will not affect the normal electricity use of residents.

[0017] 3. The power allocated by the charging piles is dynamically sorted and allocated. It is set in the remaining power after allocating electricity to residents. It is based on the working power of each charging pile. If the remaining power is enough for several charging piles, the power will be allocated to several charging piles. The allocated power is dynamic. The electric car that plugs in first will be ranked first and have priority in electricity. Then the dynamic power will be allocated in turn. If there are electric cars that need to be charged later, they can plug in and continue to wait. When the first car that is plugged in is fully charged, the system detects that the current is getting smaller and automatically stops the power output. The power will be automatically allocated to the subsequent charging piles in the queue. In this way, while ensuring active and effective charging efficiency, the charging can be carried out autonomously and orderly in the queue.

[0018] 4. The utility model does not require the installation of new power supply lines and charging piles. It only needs to install a control circuit in the original power supply facilities in the residential area, which greatly saves the cost of actual application.

[0019] 5. After the control line is installed in the original residential area, the utility model will only distribute the remaining power of the original residents. When the residents' power consumption occasionally reaches a peak, one or more charging piles will be immediately stopped and put into a queue waiting state to give priority to the residents' power consumption. When the residents have surplus power, the charging will be resumed again. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0021] Figure 1 This is a schematic diagram of the control principle of the intelligent charging based on comprehensive monitoring and automatic control of the intelligent control terminal of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0024] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0025] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] Combination Figure 1 In one embodiment of the utility model, an intelligent orderly charging system based on comprehensive monitoring and self-control of a smart control terminal is provided, characterized in that it includes a smart control terminal, a power converter, a total power meter, a plurality of sub-pile power meters, a plurality of signal acquisition modules, a 485 communication line, a plurality of signal acquisition lines, and a plurality of power lines. The smart control terminal is used to read the total power and the sub-pile power, and the operator is used to distribute the power according to the actual power read. After the distribution is completed, the execution instruction is issued through the smart control terminal. The power converter is used to provide 5V direct current to power the smart control terminal and 12V to power the signal acquisition module and provide direct current. The total power meter is used to read the total available power and distribute the total power of the charging pile. The sub-pile power meter is used to read the sub-pile power and control the on and off of the sub-pile. The signal acquisition module is used to collect the plug-in signal of each sub-pile, the 485 communication line is used to read the status information of each sub-pile and transmit the on and off instructions of the smart control terminal to each sub-pile, and the circuit wire is used to connect the total power meter and the sub-pile power meter.

[0027] The described intelligent control terminal can set the power. The power allocated by the charging pile is dynamically sorted and allocated. It is set in the remaining power after allocating electricity to residents. The working power of each charging pile is the basis. If the remaining power is enough for several sub-piles, several power consumptions will be allocated. The allocated power is dynamic. The electric car that plugs in first will be ranked first and have priority in electricity use. Then the dynamic power will be allocated in turn. If there are subsequent electric vehicles that need to be charged, they can plug in and continue to wait. Until the first car that is plugged in is fully charged, the system detects that the current is getting smaller and automatically stops the power output, and automatically allocates the power to the subsequent charging piles in the queue. In this way, while ensuring active and effective charging efficiency, the charging can be carried out autonomously and orderly in the queue.

[0028] The smart control terminal will only allocate the remaining power of the original residents' electricity consumption. When the residents' electricity consumption occasionally reaches a peak, one or more charging piles will be immediately stopped and put into a queue waiting state to give priority to the residents' electricity consumption. When the residents' electricity consumption has remaining power, the charging will be resumed again.

[0029] The sub-pile power meter can display the output power in real time and receive the on-off command issued by the intelligent control terminal, and immediately respond to start and stop the operation of the charging pile after the intelligent control terminal issues the on-off command.

[0030] The signal acquisition module has a single channel that can collect positive and negative alternating electrical signals (non-sinusoidal signals), adapt to a wide range of signal voltage changes, and can adapt to a signal voltage range from +12V to -12V, and the acquisition response speed can be as high as 1us.

[0031] The power line is a 3-way 3P 380V wire.

[0032] The power converter is a multi-channel output converter that can output 5V and 12V direct current at the same time.

[0033] The working principle of the above-mentioned intelligent orderly charging system based on comprehensive monitoring and self-control of the smart control terminal is as follows: first, the total power meter is connected to the incoming line of the original residential electricity supply in the community through the power line. After the connection, the total power meter divides the original power supply line into two through the power line, one for the residents' electricity supply and the other for several charging piles. Then a 220V circuit is led from the total power meter to the power converter, and the strong current circuit is installed. Then the weak current line is installed: 5V DC is led out from the power converter to connect to the smart control terminal, and 12V DC is led out to connect to the power supply port of the signal acquisition module arranged in advance inside several charging piles; after completion, the signal line is installed: the total power meter and several sub-pile power meters are connected to the control end of the smart control terminal through 2 485 communication lines, and several sub-pile power meters are connected in series; then the output end of the signal acquisition module arranged in advance inside several charging piles is connected from the receiving end of the smart control terminal through the signal acquisition line, and the signal acquisition modules of several sub-pile are connected in parallel when connected to the signal acquisition line; the entire control line is installed. Then connect to the general residential power supply line. At this time, the total power meter is powered on, and the total power meter divides 220V electricity to the power converter. The power converter divides 5V to start the smart control terminal and divides 12V to start several signal acquisition modules.

[0034] After the smart control terminal is started, it is set by pressing buttons. First, set the total pile power M, and then set the pile power. The number of piles is tentatively set to 6, namely N1, N2, N3, N4, N5, and N6. Select any number (0-6) of the 6 piles as candidate queuing charging piles, and tentatively select 3 piles as candidate queuing charging piles. At this time, if an electric car enters the venue for charging, it will randomly occupy 3 piles from N1-N6 in the order of plugging in the gun to start charging. After the 3 charging piles are occupied, the subsequent electric vehicles entering the venue will not start charging when plugged into the other 3 piles, and can only plug in the gun to queue and wait. After the first electric car with a gun plugged in completes charging or temporarily pulls out the gun, the signal acquisition module inside the charging pile detects that the voltage has decreased and immediately feeds back to the smart control terminal through the signal acquisition line. The smart control terminal immediately cancels the queue permission of the first plug-in gun, and automatically opens the permission to the fourth charging pile after cancellation. At this time, the fourth electric car in the queue can start charging. Similarly, the subsequent charging piles complete orderly queue charging in sequence according to this logic.

[0035] In summary, the rigid power supply distribution strategy is adopted to give priority to the residents' electricity use in the community. No matter how many electric vehicles are stationed in the community for charging, it will not affect the normal electricity use of the residents. In addition, the power allocated by the charging pile is dynamically sorted and allocated. It is set in the remaining power after the residents' electricity use is allocated. Based on the working power of each charging pile, the remaining power is enough for several sub-pile use, and the power allocated is dynamic. The electric car that plugs in the gun first will be ranked first and have priority. Then the dynamic power will be allocated in turn. If there are subsequent charging electric vehicles, they can plug in and continue to wait until the first plug-in charging car is fully charged. The system detects that the current becomes smaller and automatically stops the power output, and automatically allocates the power to the subsequent charging piles in the queue. In this way, the charging is carried out autonomously and orderly in the queue while ensuring the active and effective charging efficiency. After the control line is installed in the original residential community, only the remaining power of the original residents' electricity will be allocated. When the residents' electricity consumption occasionally peaks, one or more charging piles will be immediately stopped and enter the queue waiting state to give priority to the residents' electricity use. When the residents have surplus power, the charging is resumed. In addition, the utility model does not need to set up new power supply lines and charging piles, and only needs to install a control circuit in the original power supply facilities of the residential area, which greatly saves the cost of actual application.

[0036] Those of ordinary skill in the art will appreciate that the units (or modules, steps, the same below) of the examples described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition of each example has been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present utility model.

[0037] In the embodiments provided by the present invention, it should be understood that the division of units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units can be combined into one unit, one unit can be split into multiple units, or some features can be ignored, etc.

[0038] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0039] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the utility model can be essentially or partly embodied in the form of a software product that contributes to the prior art, or all or part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the utility model. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-0nlyMemory), random access memory (RAM, RandomAccessMemory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. An intelligent charging system based on comprehensive monitoring and self-control of an intelligent control terminal, characterized in that: include: Smart control terminal, power converter, total power meter, sub-pile power meter and signal acquisition module; among them, the total power meter is connected between the residential electricity end and the charging pile end of the original community, the power converter is connected to the total power meter, the command and control terminal and the signal acquisition module, the sub-pile power meter and the signal acquisition module are both connected to the charging pile, the smart control terminal is also connected to the total power meter, the sub-pile power meter and the signal acquisition module, which are used to read the total power and sub-pile power and distribute the power, and issue an execution instruction after the distribution is completed. The total power meter is used to read the total available power and distribute the total power of the charging pile. The sub-pile power meter is used to read the charging pile power and control the on and off of the charging pile. The signal acquisition module is used to collect the plug-in signals of each sub-pile.

2. According to claim 1, the intelligent charging system based on comprehensive monitoring and self-control of the intelligent control terminal is characterized in that: There are several sub-pile power meters, and each sub-pile power meter is connected to the intelligent control terminal through a 485 communication line.

3. According to claim 2, the intelligent charging system based on comprehensive monitoring and self-control of the intelligent control terminal is characterized in that: Several sub-pile power meters are connected in series.

4. According to claim 1, the intelligent charging system based on comprehensive monitoring and self-control of the intelligent control terminal is characterized in that: There are several signal acquisition modules, and each signal acquisition module is connected to the intelligent control terminal through a signal acquisition line.

5. According to claim 4, the intelligent charging system based on comprehensive monitoring and self-control of the intelligent control terminal is characterized in that: Several signal acquisition modules are connected in parallel.

6. The intelligent charging system based on comprehensive monitoring and self-control of the intelligent control terminal according to claim 4 is characterized in that: The total power meter leads a 220V circuit to the power converter, and the power converter leads out 5V DC power to connect to the smart control terminal. The power converter also leads out 12V DC power to connect to several signal acquisition modules.

7. The intelligent charging system based on comprehensive monitoring and self-control of the intelligent control terminal according to claim 1 is characterized in that: It also includes 1 485 communication line, several signal acquisition lines, and several power lines. The total power meter is connected to the incoming line of the original residential electricity in the community through the power line. The control end of the smart control terminal is connected to the total power meter and several sub-pile power meters through 2 485 communication lines respectively. The receiving end of the smart control terminal is connected to the output end of the signal acquisition module arranged in advance inside several charging piles through the signal acquisition line.

8. The intelligent charging system based on comprehensive monitoring and self-control of the intelligent control terminal according to claim 1 is characterized in that: After the smart control terminal is started, settings are performed by pressing buttons.

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