Intelligent power cabinet combination method and system

Abstract

The invention belongs to the technical field of charging piles, and discloses an intelligent power cabinet combination method and system, and the method comprises the following steps: obtaining the configuration information of a current charging pile, the configuration information being used for judging whether the current charging pile is in a single cabinet mode or a cabinet combination mode; if the current charging pile is in the cabinet combination mode, initiating a cabinet combination request to two adjacent charging piles; judging whether two adjacent charging piles are combined with the current charging pile or not according to the charging gun power gap and the residual power; the charging pile agreeing cabinet combination in two adjacent charging piles sends voltage and current to the current charging pile by closing the cabinet combination contactor group, intelligent cooperation between the charging piles is realized through a distributed control network and a dynamic decision-making mechanism, idle power of adjacent equipment can be quickly dispatched when the power of the current charging pile is insufficient, and the power utilization rate of the equipment is improved. Power demand and residual capacity are monitored in real time, and power resources are shared across devices.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of charging piles, and relates to an intelligent power cabinet parallel connection method and system. BACKGROUND

[0002] As a core component of the new energy vehicle industry ecosystem, the development level of the charging industry directly affects the convenience of use and market promotion process of new energy vehicles. With the rapid growth of new energy vehicles, the demand for charging is gradually increasing. Modular charging piles adopt an advanced modular design concept, decomposing the charging function into multiple independent module units, each module having a specific power output capability, so that the charging field station can flexibly combine and expand the charging modules according to actual needs. Compared with traditional fixed-power charging equipment, not only the adaptability and expandability of the charging facilities are improved, but also the initial investment cost and later operation and maintenance difficulty are effectively reduced.

[0003] When the charging field station is connected to the power grid, its total charging power needs to be determined according to the local power planning and available capacity. Some charging piles may not be able to operate at full power due to insufficient power capacity, or even cannot be charged, while other areas in the field may still have surplus power capacity that is not fully utilized. The limitations of power capacity and physical space make the charging equipment unable to fully exert its maximum efficiency, resulting in waste of energy; in addition, users may encounter long charging waiting time, unstable charging power and other problems during charging, which seriously affects the user experience and the overall efficiency of the charging network. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide an intelligent power cabinet parallel connection method and system.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: The present application provides an intelligent power cabinet parallel connection method, comprising the following steps: obtaining configuration information of a current charging pile, the configuration information being used to determine whether the current charging pile is in a single cabinet mode or a parallel cabinet mode; if the current charging pile is in the parallel cabinet mode, initiating a parallel cabinet request to two adjacent charging piles; the two adjacent charging piles determining whether to parallel connect with the current charging pile according to a charging gun power gap and a remaining power; and the charging piles in the two adjacent charging piles that agree to parallel connection sending voltage and current to the current charging pile through a closed parallel cabinet contactor group.

[0006] Further, if the current charging pile is in the parallel cabinet mode, initiating a parallel cabinet request to two adjacent charging piles, comprising: if the current charging pile is in the parallel cabinet mode, first sending a parallel cabinet request to a first charging pile clockwise, and then sending a parallel cabinet request to a second charging pile counterclockwise; if the first charging pile and the second charging pile both refuse the parallel cabinet response, the current charging pile does not perform parallel connection; and if the first charging pile and the second charging pile agree to the parallel cabinet response, the current charging pile performs parallel connection.

[0007] Further, the first charging pile and the second charging pile agree to parallel cabinet response, and the current charging pile executes parallel cabinet, comprising: The first charging pile and the second charging pile agree to parallel cabinet response, and the current charging pile executes parallel cabinet, comprising:

[0008] Further, the first charging pile and the second charging pile agree to parallel cabinet response, and the current charging pile executes parallel cabinet, further comprising: the first charging pile or the second charging pile agrees to parallel cabinet response, and the charging pile agreeing to parallel cabinet response is parallel to the current charging pile.

[0009] Further, the charging pile comprises a group charging host and a second processor, the first processor and a plurality of charging modules are arranged in the group charging host, the charging modules in the adjacent two charging piles are connected in series through the parallel cabinet contactor group in the second processor, and the first processor and the second processor are connected through the CAN bus.

[0010] Further, the adjacent two charging piles determine whether to parallel cabinet with the current charging pile according to the charging gun power gap and the remaining power, comprising: the charging modules of the adjacent two charging piles determine whether the charging gun is charging through the second processor; if the charging gun is charging, the power gap of each charging gun is calculated; the charging gun decides whether to share with the current charging pile according to the power gap; if sharing with the current charging pile, the power gap of each charging gun is taken as the parallel cabinet demand power.

[0011] Further, the parallel cabinet contactor group sends voltage and current to the current charging pile, comprising the following steps: determining whether the parallel contactor group connected with the current charging pile in the first charging pile or the second charging pile is in the open state; if the parallel contactor group is in the open state, the current charging pile sends voltage and current demand to the first charging pile or the second charging pile; the first charging pile or the second charging pile sends voltage and current according to the demand of the current charging pile.

[0012] Further, before determining whether the parallel contactor group connected with the current charging pile in the first charging pile or the second charging pile is in the open state, comprising the following steps: confirming that the first charging pile or the second charging pile receives the parallel cabinet application; confirming that the first charging pile or the second charging pile is in a fault-free state; confirming that the application strategy of the current charging pile and the corresponding strategy are in an idle state and are not activated; confirming that the first processor of the current charging pile is controlled by the first charging pile or the second charging pile; confirming that the current charging pile is connected with the first processor or the second processor; confirming that the parallel contactor group between the current charging pile and the first processor or the second processor is in a fault-free state.

[0013] Further, the first charging pile or the second charging pile sends the voltage and current according to the demand of the current charging pile, comprising the following steps: confirming that the charging module in the current charging pile is connected with the charging module of the first charging pile or the second charging pile; confirming that the demand of the current charging pile and the first charging pile or the second charging pile is not cancelled; confirming that the current charging pile sends the start-up instruction to the first charging pile or the second charging pile; confirming that the voltage sampling of the current charging pile is correct; confirming that the current charging pile sends the control instruction of the parallel contactor group; confirming that the parallel contactor group connected with the first charging pile or the second charging pile of the current charging pile is closed; and the current charging pile sends the voltage and current demand to the first charging pile or the second charging pile.

[0014] The application further provides an intelligent power parallel cabinet system, characterized in that comprising: The application further provides an intelligent power parallel cabinet system, characterized in that comprising:

[0015] Compared with the prior art, the application has the following beneficial technical effects: The intelligent power parallel cabinet method of the application realizes intelligent cooperation among charging piles through a distributed control network and a dynamic decision mechanism, can quickly dispatch idle power of adjacent equipment when the current charging pile is insufficient in power, monitors power demand and residual capacity in real time, shares power resources across equipment, and effectively avoids charging restriction caused by local power shortage.

[0016] The intelligent power parallel cabinet method of the application not only improves the service capability of a single charging pile, but also improves the power utilization efficiency of the entire charging station, so that each degree of electricity is optimally configured in the time and space dimensions. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The application further provides an intelligent power parallel cabinet method, and a flowchart of the intelligent power parallel cabinet method is shown in Fig. 1. Figure 2 The application further provides an intelligent power parallel cabinet method, and a flowchart of the intelligent power parallel cabinet method is shown in Fig. 1. Figure 3 The application further provides an intelligent power parallel cabinet method, and a flowchart of the intelligent power parallel cabinet method is shown in Fig. 1. Figure 4 The application further provides an intelligent power parallel cabinet method, and a flowchart of the intelligent power parallel cabinet method is shown in Fig. 1. Figure 5 The application further provides an intelligent power parallel cabinet method, and a flowchart of the intelligent power parallel cabinet method is shown in Fig. 1. Figure 6 A flowchart for initiating a parallel cabinet request to two adjacent charging piles in a parallel cabinet mode for the current charging pile in the embodiment of the application; Figure 7 A flowchart for sending voltage and current by the first charging pile or the second charging pile according to the demand of the current charging pile in the embodiment of the application. DETAILED DESCRIPTION

[0018] In order for those skilled in the art to better understand the application scheme, the technical solutions in the embodiments of the application will be described clearly and completely below in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the application.

[0019] Embodiment 1 The intelligent power parallel cabinet method of the application comprises the following steps as shown in the figure: obtaining configuration information of the current charging pile, the configuration information being used to judge whether the current charging pile is in a single cabinet mode or a parallel cabinet mode; if the current charging pile is in the parallel cabinet mode, initiating a parallel cabinet request to two adjacent charging piles; the two adjacent charging piles judging whether to perform parallel cabinet with the current charging pile according to a charging gun power gap and a remaining power; and the charging pile agreeing to the parallel cabinet among the two adjacent charging piles sending voltage and current to the current charging pile through a closed parallel cabinet contactor group. Figure 1 The configuration information comprises a device model, a rated power and a maximum output current, which is a basic basis for judging the running state of the charging pile. Each charging pile comprises a group charging host and a second processor. The group charging host is built-in with a first processor and a plurality of standardized charging modules. The charging modules of adjacent devices are connected in series through a parallel cabinet contactor group in the second processor, and the first processor and the second processor build a communication network through a CAN bus to form a distributed control architecture as shown in the figure.

[0020] Figure 2

[0021] The charging module adopts a modular design. Each module can be independently operated and supports hot plugging. The output voltage and current parameters can be flexibly adjusted according to the control instructions of the first processor. The power level of a single module can be configured according to actual demand, which provides high flexibility and scalability for dynamic power allocation.

[0022] ​​The first processor is responsible for charging module management, power demand calculation, cabinet strategy decision and cross-device collaborative control; the second processor is used for monitoring the state and action control of the cabinet contactor group and the real-time communication of the adjacent two charging piles, and is responsible for the real-time communication between adjacent devices; the cabinet contactor group is composed of multiple cabinet contactor groups and is used to realize electrical connection and isolation between adjacent charging piles; the charging module is a standardized power unit, which can adjust the output voltage and current parameters according to the control instruction.

[0023] The first processor first executes an initialization process, automatically reads local configuration information and performs verification to ensure the integrity and accuracy of the parameters. By analyzing the unique device ID and position code of the adjacent two charging piles, the running environment of the current device is accurately determined--if there is no device or the device does not support the cabinet function in the adjacent position, it is determined as a single cabinet independent running mode; if there is a device supporting the cabinet function in the adjacent position, it is determined as a cabinet collaborative mode. In the single cabinet mode, the independent charging process is started, and the charging module operates according to the preset voltage and current parameters, and the cabinet communication port is closed at the same time, and it does not respond to any external cabinet request, to ensure the stability of independent running. In the cabinet mode, the cabinet communication module is activated, and the collaborative standby state is entered, ready to initiate or respond to the cabinet request at any time.

[0024] The initiation of the cabinet request adopts a bidirectional parallel communication mechanism to minimize the response waiting time. The first processor of the current charging pile first sends a standardized cabinet request message to the first adjacent charging pile in the clockwise direction through the CAN bus communication interface, and the message content includes the local device ID, the current power gap value, the required voltage level, the request validity period, the connection state of the current charging gun and other key data. While waiting for the first charging pile to respond, the same content request message is immediately sent to the second adjacent charging pile in the counterclockwise direction. The parallel processing mode shortens the waiting time of the traditional serial request by nearly half, significantly improving the cabinet response speed.

[0025] The request response processing logic follows the priority determination rule and can quickly make decisions in complex scenarios. If both the first charging pile and the second charging pile return a rejection response within the request validity period, it may be due to insufficient power, failure or execution of high-priority tasks, and the current charging pile maintains an independent running state and records the reason for the request failure for subsequent optimization of the request strategy. If both return an agreement response, the cabinet operation is directly executed, and communication connections are established with both parties. If only one party returns an agreement response, it automatically becomes the cabinet object, as shown in Figure 3 By using the explicit response processing rule, the collaborative object can be quickly determined in various working conditions, avoiding the influence of decision delay on charging efficiency.

[0026] After receiving the cabinet request, the adjacent charging pile, as shown in Figure 4As shown, the first charging pile and the second processor of the second charging pile first confirm whether there is a charging gun running in the self charging module, if there is a gun site being charged, start the power gap calculation: first collect the current demand power of each charging gun, then count the actual output power of the module allocated to these gun sites, the difference between the two is the real-time power gap of the gun site. Subsequently, traverse all the charging gun allocated modules with power gap, check whether the module contains a module supporting cabinet sharing through the attribute identification of the module, and the power gap value of these shared modules is summarized as the demand power that can participate in the cabinet. At the same time, by monitoring the difference between the output power and the rated power of each charging module in real time, the available power margin of the current cabinet is calculated, that is, the sum of the rated power of all modules not running, such as Figure 5 As shown, to provide accurate resource data support for power scheduling. This fine power calculation method ensures that the cabinet decision is based on the real resource situation, avoiding the blindness of power allocation.

[0027] After the current charging pile receives the response information of the adjacent equipment, the first processor determines the final cabinet object. If only one consent response is received, it is directly determined as the cabinet object; if two consent responses are received, the remaining power values of the two are compared, and the charging pile with larger remaining power is selected as the cooperative object; if the remaining power is equal, the first charging pile in the clockwise direction is selected as the priority. Both ensure the maximization of power utilization and avoid decision conflicts through direction priority.

[0028] During the cabinet process, the remaining power of the connected cabinet object is monitored in real time. When the remaining power falls below the preset threshold, the first processor of the current charging pile automatically initiates a second request to another adjacent equipment to realize seamless switching. It ensures that when the cabinet object is insufficient in power, it can find other available charging piles for cabinet, ensuring the continuity of the charging process.

[0029] After determining the cabinet object, it is necessary to confirm that the first charging pile or the second charging pile receives the cabinet application, ensuring that both parties know the cabinet intention. Confirm that the first charging pile or the second charging pile is in a fault-free state. Only normal operation can ensure stable charging after cabinet.

[0030] Confirm the application strategy of the current charging pile and the corresponding strategy in the idle state and not activated. Different charging piles may have different cabinet application strategies, such as preferentially applying to the first charging pile in the clockwise direction, and then applying to the second charging pile in the counterclockwise direction. Ensuring that the strategy is idle and not activated can avoid conflicts and confusion. Confirming that the first processor of the current charging pile is controlled by the first charging pile or the second charging pile helps to clarify the control relationship and ensure accurate and error-free instruction transmission and execution during the cabinet process.

[0031] Confirm that the current charging pile is connected with the first processor or the second processor. If the connection is problematic, it will affect the normal operation of the cabinet. Confirm that the parallel contactor group between the current charging pile and the first processor or the second processor is in a fault-free state, and determine whether the parallel contactor group connected with the current charging pile in the first charging pile or the second charging pile is in an open state. The parallel contactor group is a key component of the cabinet, directly affecting the physical connection and power transmission of the cabinet.

[0032] As shown in Figure 6 , confirm that the charging module in the current charging pile is connected with the charging module of the first charging pile or the second charging pile of the cabinet; confirm that the cabinet demand of the current charging pile and the first charging pile or the second charging pile has not been cancelled; confirm that the current charging pile sends a power-on instruction to the first charging pile or the second charging pile; confirm that the voltage sampling of the current charging pile is correct; confirm that the current charging pile sends a cabinet contactor group control instruction; confirm that the parallel contactor group connected with the first charging pile or the second charging pile of the current charging pile is closed; the current charging pile sends voltage and current demand to the first charging pile or the second charging pile; the first charging pile or the second charging pile sends voltage and current according to the demand of the current charging pile.

[0033] As shown in Figure 7 , when the adjacent first charging pile or the second charging pile meets the cabinet condition, the current charging pile sends a cabinet application instruction. If one side meets the condition, it sends a request instruction to one side, and if both sides meet the condition, it sends a request instruction to both sides and waits for a response instruction. After receiving the application response instruction, the best one is selected through the response results on both sides to establish a legal master-slave relationship, that is, the charging pile that applies for the cabinet enters the master mode, and the cabinet that responds and is selected enters the slave mode. When in the master mode, a virtual charging gun charging request is sent to the slave cabinet through the shared module ID as a virtual gun ID, and the virtual charging gun charging is entered. After entering the virtual gun charging process, the master mode cabinet first sends a start charging instruction, and the slave cabinet allocates modules to the virtual charging gun according to the instruction. After starting charging, it first enters the line calibration mode to confirm that the power line is physically connected correctly, and then closes the corresponding cabinet contactor through the cabinet control unit to realize the physical path. If there is a fault or the cabinet demand is 0, the virtual charging gun charging is ended, the master-slave relationship is exited, and both enter the idle mode.

[0034] An intelligent power cabinet parallel method, configuration information of a current charging pile is acquired, the configuration information is used for judging whether the current charging pile is in a single cabinet mode or a parallel cabinet mode, if there is no configuration information, it belongs to the single cabinet mode, otherwise, it belongs to the parallel cabinet mode, the current charging pile periodically sends parallel cabinet handshake information to a communication CAN bus, and waits for a handshake response of a neighboring charging pile, when at least one side responds to the handshake, it indicates that communication between the neighboring charging piles is normal and the parallel cabinet can be supported at any time, after the handshake is successful, the neighboring two charging piles both detect and calculate residual power and charging gun power gaps in real time, the residual power is calculated to inform whether to establish the parallel cabinet connection with the neighboring charging pile when receiving the parallel cabinet application, the charging gun power gap is calculated to initiate the parallel cabinet application to the neighboring two charging piles to establish the parallel cabinet connection and perform power scheduling when there is a power gap, if there is a power gap in all charging guns of the current charging pile, the parallel cabinet application is sent to the neighboring first charging pile and the second charging pile, after the neighboring two charging piles receive the application, the application is responded according to the residual power of the two charging piles, the current charging pile receives the application response, and the first charging pile and the second charging pile are selected to establish the parallel cabinet connection according to the residual power values of the first charging pile and the second charging pile, and the other sends a parallel cabinet cancellation message, the current charging pile and the first charging pile are connected through a closed corresponding parallel cabinet contactor group to establish a physical line connection, and real-time parallel cabinet demand voltage and current are sent, so that the power of the first charging pile can be transmitted to the charging gun with the power gap in the current charging pile through the parallel cabinet power line, the intelligent cooperation between the charging piles is realized, the idle power of the neighboring equipment is quickly scheduled, and the power resources are shared across the equipment.

[0035] In summary, through the distributed control network and the dynamic decision mechanism, the intelligent cooperation between the charging piles is realized, when the single cabinet power is insufficient, the idle power of the neighboring equipment can be quickly scheduled, and the power resource configuration is optimized in the time and space dimensions. Through real-time monitoring of the power demand and the residual capacity, the power resources are shared across the equipment, and the charging limitation caused by local power shortage is effectively avoided. This method not only improves the service capability of a single charging pile, but also improves the power utilization efficiency of the entire charging station, and provides reliable technical support for the rapid charging of new energy vehicles.

[0036] Embodiment 2 The application further provides an intelligent power cabinet parallel system, which comprises an acquisition unit, a request unit, a judgment unit and an execution unit. The acquisition unit is used for acquiring configuration information of a current charging pile, and the configuration information is used for judging whether the current charging pile is in a single cabinet mode or a parallel cabinet mode. The request unit is used for initiating a parallel cabinet request to neighboring two charging piles if the current charging pile is in the parallel cabinet mode. The judgment unit is used for judging whether the neighboring two charging piles agree to parallel cabinet with the current charging pile according to charging gun power gaps and residual power. The execution unit is used for sending voltage and current to the current charging pile through a closed parallel cabinet contactor group by the charging pile that agrees to the parallel cabinet among the neighboring two charging piles.

[0037] The intelligent power parallel cabinet system can realize the method steps consistent with the above method, and details are not repeated.

[0038] It should be noted that the terms "first", "second", and the like in the description and claims of the application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

Claims

1. A method of intelligent power paralleling, characterized by, The method comprises the following steps: obtaining configuration information of the current charging pile, the configuration information being used to determine whether the current charging pile is in a single-pile mode or a parallel-pile mode; if the current charging pile is in the parallel-pile mode, initiating a parallel-pile request to two adjacent charging piles; the two adjacent charging piles determining whether to be parallel-connected with the current charging pile according to a charging gun power gap and a remaining power; a charging pile agreeing to be parallel-connected among the two adjacent charging piles sending a voltage and a current to the current charging pile through a parallel-connection contactor group.

2. The intelligent power paralleling method of claim 1, wherein, The method of initiating the parallel-pile request to the two adjacent charging piles if the current charging pile is in the parallel-pile mode comprises: if the current charging pile is in the parallel-pile mode, sending a parallel-pile request to a first charging pile in a clockwise direction and sending a parallel-pile request to a second charging pile in an anticlockwise direction; if the first charging pile and the second charging pile both refuse to be parallel-connected, the current charging pile does not perform parallel connection; if the first charging pile and the second charging pile agree to be parallel-connected, the current charging pile performs parallel connection.

3. The intelligent power paralleling method of claim 2, wherein, The method of performing parallel connection if the first charging pile and the second charging pile agree to be parallel-connected comprises: if the first charging pile and the second charging pile both agree to be parallel-connected, selecting a charging pile with a larger remaining power from the first charging pile and the second charging pile to be parallel-connected with the current charging pile.

4. The intelligent power paralleling method of claim 3, wherein, The method of performing parallel connection if the first charging pile and the second charging pile agree to be parallel-connected further comprises: if the first charging pile or the second charging pile agrees to be parallel-connected, the charging pile agreeing to be parallel-connected is parallel-connected with the current charging pile.

5. The intelligent power parallel connection method according to claim 1, characterized in that: the charging pile comprises a group charging host and a second processor, the group charging host is provided with a first processor and a plurality of charging modules, the charging modules in the two adjacent charging piles are connected in series through a parallel-connection contactor group in the second processor, and the first processor and the second processor are connected through a CAN bus.

6. The intelligent power paralleling method of claim 5, wherein, The method of determining whether to be parallel-connected with the current charging pile according to the charging gun power gap and the remaining power comprises: the charging modules of the two adjacent charging piles determining whether the charging gun is charging through the second processor; if the charging gun is charging, calculating a power gap of each charging gun; the charging gun determining whether to share with the current charging pile according to the power gap; if sharing with the current charging pile, taking the power gap of each charging gun as a parallel-connection required power.

7. The intelligent power and energy management method of claim 5, wherein, Before the parallel-connection contactor group sends the voltage and the current to the current charging pile, the method comprises the following steps: determining whether a parallel connection contactor group connected with the current charging pile in the first charging pile or the second charging pile is in an open state; if the parallel connection contactor group is in the open state, the current charging pile sends a voltage and a current requirement to the first charging pile or the second charging pile; the first charging pile or the second charging pile sends the voltage and the current according to the requirement of the current charging pile.

8. The intelligent power paralleling method of claim 7, wherein, Before the determination of whether the parallel connection contactor group connected with the current charging pile in the first charging pile or the second charging pile is in the open state, the method comprises the following steps: confirming that the first charging pile or the second charging pile receives the parallel-connection application; confirming that the first charging pile or the second charging pile is in a fault-free state; confirming that an application strategy of the current charging pile and a corresponding strategy are in an idle state and are not activated; confirming that a first processor of the current charging pile is controlled by the first charging pile or the second charging pile; Confirming that the current charging pile is connected with the first processor or the second processor; Confirming that the parallel contactor group between the current charging pile and the first processor or the second processor is in a fault-free state.

9. The intelligent power paralleling method of claim 7, wherein, Before the first charging pile or the second charging pile sends voltage and current according to the demand of the current charging pile, the following steps are included: Confirming that the charging module in the current charging pile is connected with the charging module of the first charging pile or the second charging pile of the parallel cabinet; Confirming that the demand of the current charging pile and the first charging pile or the second charging pile of the parallel cabinet is not cancelled; Confirming that the current charging pile sends a start-up instruction to the first charging pile or the second charging pile; Confirming that the voltage sampling of the current charging pile is correct; Confirming that the current charging pile sends a parallel cabinet contactor group control instruction; Confirming that the parallel contactor group connected with the first charging pile or the second charging pile of the current charging pile is closed; The current charging pile sends voltage and current demand to the first charging pile or the second charging pile.

10. An intelligent power paralleling system, comprising: It includes: An acquisition unit is configured to acquire configuration information of a current charging pile, the configuration information being used to determine whether the current charging pile is in a single cabinet mode or a parallel cabinet mode; A request unit is configured to initiate a parallel cabinet request to two adjacent charging piles if the current charging pile is in the parallel cabinet mode; A judgment unit is configured to determine whether the two adjacent charging piles are parallel to the current charging pile according to a charging gun power gap and a remaining power; An execution unit is configured to send voltage and current to the current charging pile by closing a parallel cabinet contactor group for the charging pile that agrees to parallel cabinet among the two adjacent charging piles.

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