CN114248655A

CN114248655A - Charging system and charging method for three-dimensional spherical array type intelligent dynamic power distribution

Info

Publication number: CN114248655A
Application number: CN202010990327.3A
Authority: CN
Inventors: 杨明理军; 封伟杰
Original assignee: Zhuhai Huaxiayunlian Technology Co ltd
Current assignee: Zhuhai Xingnuo Energy Technology Co ltd
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2022-03-29

Abstract

The invention discloses a charging system and a charging method for three-dimensional spherical array type intelligent dynamic power distribution, wherein the charging system for three-dimensional spherical array type intelligent dynamic power distribution comprises the following steps: the charging rear-end machine mainly comprises a charging module, a power controller and a three-dimensional spherical array switching module, and is used for realizing intelligent power distribution and system safety monitoring in the charging process; the charging front-end machine mainly comprises a display unit, a communication unit, a card reader, a charging unit and a networking module, and is used for realizing communication with a vehicle, man-machine interaction, communication with a monitoring platform and metering and charging. The charging system of the invention intelligently distributes the charging power and the charging interface automatically adjusts the output; 4-8 charging systems or more charging systems can be compatible; each charging interface meets the maximum output of the system; the method has good economical efficiency, is suitable for market development, and promotes the application of the charging stack.

Description

Charging system and charging method for three-dimensional spherical array type intelligent dynamic power distribution

Technical Field

The invention relates to a charging technology, in particular to a charging system and a charging method for three-dimensional spherical array type intelligent dynamic power distribution.

Background

At present, the requirements of various vehicles can be met only by matching the power of a charging pile with the requirements of the vehicles, so that a large contradiction exists in power design, and a system with large power wastes resources and has large loss for the vehicles with small requirements; systems with low power appear to have a poor charging experience for vehicles with high demand. The contradiction is solved, a high-power intelligent charging pile technology is introduced, the investment of a power pile can be automatically adjusted, and various vehicle requirements are met. The existing intelligent distribution scheme of the high-power charging pile is based on the design thinking of a matrix type charging system, and the design idea is to distribute each power unit into a plurality of output loops according to the logic of one input and multiple outputs, so that the matrix type charging system is formed. The technology expands the charging pile from the original single-port or double-port type to a multi-port type, and forms a high-power charging pile. The matrix type charging pile system can dynamically adjust each group of power units to any one charging interface according to the power requirement of the front end, is technically more complex than a conventional double-port charging pile, and is a trend for the development of high-power charging piles. Under the condition of limited power condition, the requirement of maximizing the power of each interface is realized, and the method has very important significance on charging time efficiency. The matrix charging pile technology is simple and easy to understand in design principle, but is relatively complex in system design, so that the cost is high, and the trade-off between economy and reliability is difficult. Enterprises in the industry also develop low-cost solutions, but the solutions are relatively limited, so that the technology and the application are not consistent. Under the circumstance of the rapid development of the current charging industry, a market-adapted and competitive charging technology is urgently needed.

The existing 'matrix type' charging pile system has the following defects:

has low technical value

Based on the design idea of 'one input and multiple outputs', a multi-port matrix type charging system is formed, and the multi-port matrix type charging system has strong logicality and certain technical threshold on the technical level. However, from theory to practical application, the market competitive advantage of the product is difficult to embody, and the technical value is not sufficiently exerted on the product.

The system cost is high

The matrix charging pile uses a large number of high-voltage direct-current contactors as control devices of tapping points in system design, and forms a matrix layout, so that the cost of hardware is very high. Other methods for realizing the system exist in the design industry, but a large amount of practical application tests are still needed, and the system is only a test stage at present. And therefore, the reliability and the economical efficiency are also insufficient.

Large expansion difficulty

The matrix charging stack has certain difficulty in expansibility, and is mainly reflected in the matrix layout of hardware and the logic design of software. Each path is added to hardware, loops of each group of power units and each interface are required to be connected, and the operation of the whole logic is influenced by adding a path to software. In addition, as the number of charging interfaces increases, the logic complexity of the product also increases greatly, and no universal algorithm is supported.

Disclosure of Invention

The invention mainly aims to provide a charging system and a charging method for three-dimensional spherical array type intelligent dynamic power distribution, which can enable charging power to be intelligently distributed and a charging interface to automatically regulate and output; 4-8 charging systems or more charging systems can be compatible; each charging interface meets the maximum output of the system.

According to an aspect of the present invention, there is provided a charging system for three-dimensional ball-array type intelligent dynamic power allocation, comprising:

the charging rear-end machine mainly comprises a charging module, a power controller and a three-dimensional spherical array switching module, and is used for realizing intelligent power distribution and system safety monitoring in the charging process;

the charging front-end machine mainly comprises a display unit, a communication unit, a card reader, a charging unit and a networking module, and is used for realizing communication with a vehicle, man-machine interaction, communication with a monitoring platform and metering and charging.

Further, the charging front-end machine is in communication interaction with the vehicles and used for acquiring the charging requirement of each vehicle and transmitting the requirement back to the power controller for centralized control through internal communication.

Furthermore, the power controller is used for switching appropriate power to a corresponding output loop by regulating the three-dimensional ball array switching module through analyzing the working state and the charging requirement of each path of output bus, so as to carry out intelligent power regulation.

Furthermore, the three-dimensional ball array switching module is used as a three-dimensional layout array, each power unit is connected with each other in a three-dimensional ball array mode, and a high-reliability direct-current contactor is used as a control point at the connection position.

Furthermore, the charging system for the three-dimensional spherical array type intelligent dynamic power distribution does not have a fixed power part, and the size of a power group is freely set by taking the power group as a unit; each output loop can be switched by each power group; each port can achieve the maximum output of the system according to the power group allocation.

Furthermore, the nodes of the charging system with the three-dimensional spherical array type intelligent dynamic power distribution adopt a direct contactor with a feedback contact as a control point, and the working state of each node is fed back to the controller; setting each node to have the functions of use and stop, wherein when the node is stopped, the related connection point is required to be in a stop state; as long as the present node of the current interface is not deactivated, the charging output of the port is not affected.

Furthermore, the node and the common node are designed fixedly, and the fixed address and the connection mode of the module are also set according to the control principle on the layout of the charging module.

According to another aspect of the present invention, there is provided a charging method for three-dimensional ball-array type intelligent dynamic power allocation, comprising the following steps:

s1: the alternating current power grid is connected to a system rear end machine, the rear end machine is connected with the front end machine through an internal line, and the front end machine charging gun is connected with a vehicle;

s2: the first port starts a charging requirement, and the current port executes the node working group first and puts the node working group into insulation detection; continuing to enter the next charging process after the insulation detection is passed;

s3: the method comprises the following steps that a charger is interactively established with a vehicle, the vehicle sends a charging demand to a front-end machine, and the front-end machine uploads the demand to a rear-end power controller; when the power controller receives a charging demand, switching priority logic is set through internal data analysis;

s4: after the switching setting of the power group is finished, the corresponding charging port outputs corresponding power; outputting according to the current switching when the charging requirement is not changed;

s5: the charging internal direct-current voltage acquisition can detect internal output voltage, the current charging port can also detect current battery voltage, the output contactor is closed when the voltage difference between the charging internal direct-current voltage acquisition and the current battery voltage is within 10V, the charging loop is formally communicated, and current is output;

s6: when charging is stopped, the nodes on the current working group are released and in a standby state to wait for the next input;

s7: after the charging modules which are correspondingly put into the working groups stop using, voltage relief must be completed, and the charging modules are put into other working groups again for use; if the bleeder voltage is more than 60V, the current group cannot be put into use;

s8: in the working process, the control and execution states of each node are collected in real time, so that the operation safety is ensured; when abnormity happens, stopping current charging immediately, setting the corresponding node as 'unavailable', and reporting a fault;

s9: in the charging process, the uniqueness of output buses of working groups with different input is ensured, the phenomenon of output bus crossing cannot occur, and the charging of corresponding interfaces is immediately stopped when abnormality occurs;

s10: an automatic detection flow is set before charging, and the node control and the internal output are guaranteed to be output under the normal condition;

s11: the processes of the steps S7, S8, S9 and S10 are continuously executed in the whole process, so that the charging safety is ensured; reporting the fault to the front end and the monitoring background when the fault is abnormal;

s12: charging data, battery data, abnormal state and other data in the charging process are uploaded to the monitoring platform in real time.

Further, the setting of the switching priority logic in step S3 includes:

determining whether the power of the node meets the output;

the node automatically inquires whether the adjacent node can be put into the current working group or not under the condition of insufficient power;

if the charging requirement cannot be met after the connected node is added, the node is further inquired and added to the 1-order common node;

after the 1 st-order sharing node is put into use, the other nodes at intervals can ask for the input.

Further, the step S5 includes:

when the charging requirement of the vehicle changes, repeating the step S2 to adjust the input quantity of the nodes of the current working group so as to meet the charging requirement;

when other charging ports start charging, the charging requirements and the charged interfaces are uploaded to the main power controller for data analysis, and nodes are redistributed to meet the charging requirements of different interfaces.

The invention has the advantages that:

the charging system of the invention intelligently distributes the charging power and the charging interface automatically adjusts the output; 4-8 charging systems or more charging systems can be compatible; each charging interface meets the maximum output of the system; the method has good economical efficiency, is suitable for market development, and promotes the application of the charging stack.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic block diagram of the charging system design of the present invention.

Fig. 2 is a schematic diagram of the communication loop design of the present invention.

Fig. 3 is a schematic diagram of the charging module of the present invention.

Fig. 4 is a power controller definition diagram of the present invention.

FIG. 5 is a front end controller definition diagram of the present invention.

FIG. 6 is a schematic diagram of a card reader of the present invention.

Fig. 7 is a schematic diagram of the operation monitoring platform of the present invention.

Fig. 8 is a system backend electromechanical schematic of the present invention.

Fig. 9 is an application definition diagram of the stereoscopic ball-array switching module according to the present invention.

Fig. 10 is an electrical main schematic diagram of the system front end machine of the present invention.

Fig. 11 is a schematic diagram of a main controller and switching module of the present invention.

FIG. 12 is an algorithm undirected graph of the present invention.

Fig. 13 is a flow chart of the breadth first search method of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Referring to fig. 1 to 11, as shown in fig. 1 to 11, a charging system for three-dimensional ball-grid-type intelligent dynamic power allocation includes:

In this embodiment, the three-dimensional ball grid switching module is characterized by a three-dimensional layout array, each power unit is connected with each other in a three-dimensional ball grid manner, and a high-reliability direct-current contactor is used as a control point at a connection position. A plurality of nodes are selected on the circumference as charging port output loops, named as local nodes, and each port output node is output by the local node of each port, namely, the number of charging ports designed by the system, namely, the number of local nodes. The nodes which are connected with the node in a three-dimensional way are named as common nodes. According to the complexity of the composition of the system, the system can be designed to be 1-order common node, 2-order common node and multi-order common node, the more the common node order is, the more the system is complex, but the higher the adjustment precision is. The common nodes of different orders are not connected.

In this embodiment, the stereoscopic ball-array charging system does not have a fixed power part, and the size of the power group can be freely set by using the power group as a unit. Each output loop can be switched by each power group. Each port can achieve the maximum output of the system according to the power group allocation.

In this embodiment, the nodes must adopt a direct contactor with a feedback contact as a control point, and the working state of each node is fed back to the controller. Each node is configured to have both active and inactive functions, and the associated connection point must be inactive when the node is inactive. As long as the present node of the current interface is not deactivated, the charging output of the port is not affected.

In this embodiment, since the node and the common node are designed fixedly, a module fixed address and a connection mode must be set according to a control principle in the charging module layout, so as to ensure that the entire system operates as designed.

In this embodiment, when the number of charging ports needs to be expanded, the charging system only needs to increase the number of local nodes and the number of common nodes corresponding to the ports to be increased, and the connection is achieved. The method can be used as a configuration definable item during system design, and is beneficial to quick expansion of the system.

In this embodiment, the three-dimensional ball-array switching module has a dc contactor to complete connection through a ball-array layout, the main controller connects the contactor control coils corresponding to the modules through a customized remote control interface, and simultaneously, the feedback signal of the contactor is connected back to the remote signaling interface of the main controller. The corresponding logic relation of control and control feedback is achieved through a control-acquisition mode, real-time monitoring capability is achieved, alarm monitoring which does not correspond to control and feedback signals is achieved, and reliable and stable operation of the system is guaranteed.

In this embodiment, the charging system is generally a split-type multi-port (four-port, six-port, eight-port, etc.) charging system.

Example 2

A charging method for three-dimensional spherical array type intelligent dynamic power distribution comprises the following steps:

s2: the first port starts the charging requirement, and the current port executes the node working group first and puts insulation detection into operation. Continuing to enter the next charging process after the insulation detection is passed;

s3: the method comprises the following steps that a charger is interactively established with a vehicle, the vehicle sends a charging demand to a front-end machine, and the front-end machine uploads the demand to a rear-end power controller; when the power controller receives a charging demand, the switching priority logic is set through internal data analysis:

determining whether the power of the node meets the output;

after the 1-order sharing node is put into use, other separated local nodes can still ask for the input;

s4: after the switching setting of the power group is finished, the corresponding charging port outputs corresponding power, and the power is output according to the current switching when the charging requirement is not changed;

S5-A: when the charging requirement of the vehicle changes, repeating the step S2 to adjust the input quantity of the nodes of the current working group so as to meet the charging requirement;

S5-B: when other charging ports start charging, the charging requirements and the charged interfaces are uploaded to the main power controller for data analysis, and nodes are redistributed to meet the charging requirements of different interfaces;

s11: the processes of S7, S8, S9 and S10 are continuously executed in the whole process, so that the charging safety is ensured; reporting the fault to the front end and the monitoring background when the fault is abnormal;

Power switching priority specification:

priority level	Engagement priority	Release priority levels
			This node	This node	Node separated by local node
Adjacent local node	Adjacent local node	N-order common node
			1 st order common node	1 st order common node	2 nd order common node
2 nd order common node	2 nd order common node	1 st order common node
			N-order common node	N-order common node	Adjacent local node
Node separated by local node	Node separated by local node	This node

Note: and during power switching, the charging demand current is considered to be prior, and meanwhile, the power demand is added to be used as switching regulation. The power output reaches the optimal state of the demand, the charging demand of a high-voltage large-current vehicle can be met, the charging demand of a low-voltage large-current vehicle can also be met, the intelligent adjustment advantage of the system is fully exerted, the whole charging loss is the lowest, and the timeliness is the fastest.

The working process of the whole operation monitoring platform system is as follows:

s1: a user starts a charging request in a mode of scanning a code by a mobile phone or swiping a card at the front end and the like;

s2: the operation monitoring platform checks data such as a user account, a password, balance and the like;

s3: the data verification is realized by issuing a charging starting instruction, and the charging equipment receives and executes the starting instruction;

s4: the charging equipment is in a normal monitoring state and is in communication interaction with the electric automobile;

s5: the charging equipment carries out internal insulation monitoring and enters into vehicle data interactive analysis after passing;

s6: the charging equipment enters a charging stage, and the front-end controller transmits the vehicle requirement to the power controller;

s7: each slave power controller requests to allocate power output to meet the requirement after receiving the output requirement of the front-end controller;

s8: the master power controller counts and analyzes the demand data of the slave power controller, and performs automatic switching logic on the three-dimensional ball module to ensure that the demand of each charging port is met to the maximum extent;

s9: the master power controller obtains an optimal control logic according to an algorithm and then sends the optimal control logic to each slave power controller to execute control;

s10: the slave power controller executes the switching control and detection of the three-dimensional solving module and feeds back the result to the master control;

s11: circularly executing S7-S10 in the charging process, and dynamically adjusting power output;

s12: after charging is completed, the front-end controller issues a stop instruction, and the power controller executes shutdown operation;

s13: the front-end controller uploads the bill of the order to the monitoring background to finish order settlement according to the configured rate;

s14: the user completes the charging task after paying according to the bill;

s15: and the charging order process and settlement data are stored in the monitoring platform server to realize the data analysis function.

The algorithm of the system adopts an algorithm based on undirected graph and breadth-first search.

Description of the algorithm:

breadth-first search is analogous to the tree's hierarchical traversal process. It needs to be implemented by means of a queue. As shown in fig. 13, to traverse each vertex from v0 to v6, we can set v0 as the first layer, v1, v2, v3 as the second layer, v4, v5 as the third layer, and v6 as the fourth layer, and traverse each vertex of each layer one by one.

The specific process is as follows:

1. preparation work: creating a visited array for recording the accessed vertex; creating a queue for storing the top points of each layer;

2. starting from v0 in the figure, setting the value of the weighted [ v0] array to true, and enqueuing v 0;

3. as long as the queue is not empty, the following operations are repeated:

(1) dequeuing a head of queue vertex u;

(2) all adjacent vertices w of u are checked in turn, and if the value of weighted [ w ] is false, then w is accessed and set weighted [ w ] to true while w is enqueued.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a charging system of three-dimensional ball-array formula intelligence dynamic power distribution which characterized in that includes:

2. The charging system of claim 1, wherein the charging front-end machine is in communication with the vehicles for obtaining the charging requirement of each vehicle and transmitting the requirement back to the power controller for centralized control via internal communication.

3. The charging system for three-dimensional spherical array type intelligent dynamic power distribution according to claim 1, wherein the power controller is used for performing intelligent power regulation by analyzing the working state and the charging requirement of each output bus and switching appropriate power to a corresponding output loop through regulating and controlling the three-dimensional spherical array switching module.

4. The charging system according to claim 1, wherein the stereoscopic ball-grid switching module is configured to serve as a stereoscopic layout array, each power unit is connected to another power unit in a stereoscopic ball grid manner, and a high-reliability direct current contactor is used as a control point at a connection.

5. The charging system for the intelligent dynamic power distribution in the stereoscopic ball-grid array according to claim 1, wherein the charging system for the intelligent dynamic power distribution in the stereoscopic ball-grid array is not provided with a fixed power part, and the size of a power group is freely set by taking the power group as a unit; each output loop can be switched by each power group; each port can achieve the maximum output of the system according to the power group allocation.

6. The charging system for three-dimensional ball-grid-type intelligent dynamic power distribution according to claim 1, wherein a direct contactor with a feedback contact is adopted as a control point for nodes of the charging system for three-dimensional ball-grid-type intelligent dynamic power distribution, and the working state of each node is fed back to a controller; setting each node to have the functions of use and stop, wherein when the node is stopped, the related connection point is required to be in a stop state; as long as the present node of the current interface is not deactivated, the charging output of the port is not affected.

7. The charging system of claim 1, wherein the node and the common node are designed fixedly, and a module fixed address and a connection mode are set according to a control principle in a charging module layout.

8. A charging method for three-dimensional spherical array type intelligent dynamic power distribution is characterized by comprising the following steps:

9. The charging method for three-dimensional ball-grid-type intelligent dynamic power distribution according to claim 8, wherein the setting of switching priority logic in step S3 includes:

determining whether the power of the node meets the output;

10. The charging method for three-dimensional ball-grid-type intelligent dynamic power allocation according to claim 8, wherein the step S5 comprises: