An intelligent aging device for a charging pile and its circuit control method

Abstract

The present invention provides a charging pile intelligent aging device and its circuit control method. The method includes: closing the switch QF, and the charging pile C1 is powered on; the first charging main control unit inside the charging pile C1 detects that the resistance of the charging socket connected to it through the charging gun is 1 KΩ, and determines it as a reliable connection state; closing the charging relay J, so that the first charging gun is powered on, and further the first charging socket connected to the first charging gun is powered on; making the coil of the middle relay J1 powered on, the normally open contact NO of the middle relay J1 connected in series on the charging socket is closed, and the normally closed contact NC is opened, so that the charging output of the charging pile C1 is powered on to the charging pile C2 connected to the rear end of the normally open contact of the middle relay J1; the normally closed contact NC of the middle relay J1 is opened due to the coil being powered on, thereby realizing the isolation between the auxiliary power supply and the main power supply of the charging pile C1. Through this device and the corresponding control method, automatic relay power supply for charging pile aging is realized, and the position of the aging-fault charging pile can be indicated. 1CP The resistance is 1 KΩ, and it is determined as a reliable connection state; closing the charging relay J, so that the first charging gun is powered on, and further the first charging socket connected to the first charging gun is powered on; making the coil of the middle relay J1 powered on, the normally open contact NO of the middle relay J1 connected in series on the charging socket is closed, and the normally closed contact NC is opened, so that the charging output of the charging pile C1 is powered on to the charging pile C2 connected to the rear end of the normally open contact of the middle relay J1; the normally closed contact NC of the middle relay J1 is opened due to the coil being powered on, thereby realizing the isolation between the auxiliary power supply and the main power supply of the charging pile C1. Through this device and the corresponding control method, automatic relay power supply for charging pile aging is realized, and the position of the aging-fault charging pile can be indicated.

Description

Technical Field

[0001] The present invention provides an intelligent aging device for charging piles and its circuit control method, which relates to the technical field of charging piles. Background Art

[0002] With the rapid increase in the popularity rate of new energy electric vehicles, the demand for household AC charging piles is increasing. In order to improve production capacity to meet social needs, many production enterprises adopt a series aging scheme to improve aging efficiency and production capacity. However, since an AC charging pile is equivalent to a knife switch in terms of electrical principle, during aging, it is necessary to connect all series-connected AC charging piles in sequence starting from the first AC charging pile, and no connection can be missed in the middle. For example, if the series aging bench of a production enterprise has 25 workstations, then all 25 workstations must be fully connected with AC charging piles before aging can be started. Such an aging connection and operation method is very inflexible and inefficient. Secondly, during the aging process, if any AC charging pile is damaged, its internal relay will actively disconnect the output, forming a fault breakpoint, resulting in power loss of all subsequent AC charging piles. At this time, it is necessary to manually replace the damaged AC charging pile and restart all AC charging piles, which leads to extremely low aging efficiency of AC charging piles and seriously affects production capacity. Summary of the Invention

[0003] The present invention provides an intelligent aging device for charging piles and its circuit control method. 1) An additional auxiliary power supply line is added for series aging of AC charging piles, and a relay relay with a normally open / normally closed conversion function is used to control its switching relationship with the main aging power supply line to achieve power supply connection of the relay common point, and a fault indication sound and light alarm lamp is set.

[0004] 2) The normally open contact of the relay relay is connected in series in the main power supply line, and its normally closed line is connected in series in the added power supply line, and the output ends of the normally open and normally closed are the relay common point. When the series AC charging pile is normally powered on for aging, the AC charging pile outputs normally and supplies power to the relay coil in series behind it. The normally open contact of the relay relay is thus closed, realizing the automatic series power supply of the aging charging piles.

[0005] 3) At the same time, the synchronous disconnection of the normally closed contact of the relay relay also realizes the effective isolation of its auxiliary power supply line, avoiding charging pile error reporting caused by simultaneous operation of dual power supplies. During aging, if any AC charging pile has an abnormality and forms a fault breakpoint, the AC charging pile will disconnect the output. Therefore, the relay coil loses power, and the normally closed contact in the auxiliary power supply line returns to the closed state, enabling the relay common point behind the main power supply line breakpoint caused by the faulty AC charging pile to be shunted and continued from the auxiliary power supply line, so that the AC charging piles behind the fault breakpoint still have power supply, effectively avoiding the influence of the fault breakpoint on the subsequent AC charging piles.

[0006] An intelligent aging device for charging piles proposed by the present invention, the intelligent aging device for charging piles includes:

[0007] Power distribution module: provides input power for the entire intelligent aging device of the charging pile and transfers the input power to the charging pile C1 module;

[0008] Charging pile C1 module: monitors whether the vehicle is correctly connected and starts and stops charging, and outputs the input power to the first relay control module;

[0009] First relay control module: isolates the charging pile C1 module from the charging pile C2 module and controls whether to transfer power to the charging pile C2 module;

[0010] Charging pile C2 module: provides a charging function, interacts with the charging gun and the vehicle, and transfers the input power to the relay control module;

[0011] Second relay control module: receives the output signal from the charging pile C2 and controls whether to transfer power to the charging pile Cn module;

[0012] Charging pile Cn module: realizes the interaction with the charging gun, completes the charging task, and outputs power to the next level as needed;

[0013] Nth relay control module: controls whether the power input of the charging pile Cn module is turned on, and if there are subsequent charging pile modules, continues to transfer power.

[0014] Furthermore, the power distribution module includes: a distribution box and a switch QF. The power supply wires L and N of the distribution box are connected to the charging pile C1, and the wire L is connected in series with the switch QF.

[0015] Furthermore, the charging pile C1 module includes: a first charging main control unit, a load detection resistor R 1CP , an audible and visual alarm lamp D1, a charging gun 1, and a charging seat 1. The power supply wires L and N of the power distribution module are fixedly connected to the charging gun 1 through a charging relay J inside the charging pile C1 at the rear end of the switch QF.

[0016] Furthermore, the first relay control module includes a middle relay J1 and a normally closed relay K1. The digital signal input end of the normally open contact NO of the middle relay J1 is connected to the digital signal output end of the charging seat 1.

[0017] Furthermore, the charging pile C2 module includes: a second charging main control unit, a load detection resistor R 2CP , an indicator lamp D2, a charging gun 2, and a charging seat 2. The digital signal input end of the charging pile C2 module is connected to the digital signal output end of the normally open contact NO of the middle relay J1.

[0018] Further, the second relay control module includes a middle relay J2 and a normally closed relay K2, and the digital signal input terminal of the normally open contact NO of the middle relay J2 is connected to the digital signal output terminal of the second charging stand.

[0019] Further, the charging pile Cn module includes an Nth charging main control unit, a load detection resistor R nCP , an indicator light Dn, a charging gun N, and a charging stand N. The digital signal output terminal of the charging pile Cn module is connected to the digital signal output terminal of the normally open contact NO of the middle relay Jn-1.

[0020] Further, the Nth relay control module includes a middle relay JN and a normally closed relay KN, and the digital signal input terminal of the normally open contact NO of the middle relay JN is connected to the digital signal output terminal of the charging stand N.

[0021] Further, the resistance values of the load detection resistors of all charging pile modules are 1KΩ, and the load detection resistors of all charging pile modules are connected between the CP line and the PE line of the corresponding charging pile modules. The digital signal input terminals of all charging pile modules are connected in parallel to an acoustic-optic warning lamp, and the acoustic-optic warning lamp is controlled by a normally closed relay.

[0022] Further, the circuit control method of the charging pile intelligent aging device includes:

[0023] Close the switch QF, and the charging pile C1 is powered on;

[0024] The first charging main control unit inside the charging pile C1 detects through the charging gun that the resistance of the charging stand connected to it is 1KΩ, and determines it to be in a reliable connection state; 1CP Judge it as a reliable connection state;

[0025] Close the charging relay J to power on the first charging gun, and further power on the first charging stand connected to the first charging gun;

[0026] The power-on of the first charging stand causes the coil of the middle relay J1 to be powered on. The normally open contact NO of the middle relay J1 connected in series on the first charging stand closes, and the normally closed contact NC opens, so that the charging output of the charging pile C1 powers on the charging pile C2 connected to the rear end of the normally open contact of the middle relay J1;

[0027] The normally closed contact NC of the middle relay J1 opens due to the power-on of the coil, thereby realizing the isolation between the auxiliary power supply and the main power supply of the charging pile C1;

[0028] When the charging pile C2 is powered on, it enables the charging pile C2 to output normally for charging and provides input for subsequent charging piles.

[0029] Advantages of the present invention: The present invention effectively solves the problems that when AC charging piles are connected in series and aged, all series workstations must be fully connected, and when an AC charging pile ages and fails, all subsequent AC charging piles lose power and need to be manually replaced with new charging piles, which is inefficient. It greatly improves the aging efficiency of AC charging piles and the automation degree of the aging device; it can realize automatic relay power supply for charging pile aging, and can indicate the location of the aging-fault charging pile, with simple operation and low cost. A typical application of the present invention is the batch automatic aging of AC charging piles. In the aging workstation, the number of charging piles actually put into aging is not limited, and even one charging pile can be aged, which is very convenient and practical. Brief Description of the Drawings

[0030] Figure 1 It is a schematic diagram of an intelligent aging device for a charging pile according to the present invention. Detailed Embodiments

[0031] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to fully understand the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

[0034] An embodiment of the present invention, an intelligent aging device for a charging pile, the intelligent aging device for a charging pile includes:

[0035] Power distribution module: Provides an input power supply for the entire intelligent aging device for a charging pile, and transmits the input power supply to the charging pile C1 module;

[0036] Charging pile C1 module: Monitors whether the vehicle is correctly connected and starts and stops charging, and outputs the input power supply to the first relay control module;

[0037] First relay control module: Isolates the charging pile C1 module from the charging pile C2 module, and controls whether to transmit the power supply to the charging pile C2 module;

[0038] Charging pile C2 module: Provides a charging function, interacts with the charging gun and the vehicle, and transfers the input power supply to the relay control module;

[0039] Second relay control module: Receives the output signal from the charging pile C2 and controls whether the power supply is transferred to the charging pile Cn module;

[0040] Charging pile Cn module: Realizes the interaction with the charging gun, completes the charging task, and outputs the power supply to the next level as needed;

[0041] Nth relay control module: Controls whether the power input of the charging pile Cn module is turned on. If there are subsequent charging pile modules, the power supply continues to be transferred.

[0042] In the present invention, the auxiliary power supply line starts from the switch QF for the connection of the power supply wires L and N. First, it is connected to the normally closed contact NC of the relay J1. The output end of the normally closed contact NC is connected to the output end of its normally open contact NO to form a common connection point. Then, this common connection point is connected in series to the normally closed contact NC of the relay J2. Similarly, the output end of its normally closed contact NC is connected to the output end of its normally open contact NO to form a common connection point, and so on. Finally, it is connected in series to the normally closed contact NC of the last relay Jn. Similarly, the output end of its normally closed contact NC is connected to the output end of its normally open contact NO to form a common connection point and is connected to the aging load LOAD, thereby constituting an auxiliary power supply line parallel to the main power supply line of the aging AC charging pile, realizing the main and auxiliary power supply relationship for the aging AC charging pile, and the main and auxiliary power supply lines are controlled and switched at the fault break point by the intermediate relays (J1~Jn).

[0043] The working principle and effects of the above technical solution are as follows: The power distribution module provides the input power for the entire charging pile system and distributes the power to each charging pile module (C1, C2, Cn). Its function is to provide a stable power input for the intelligent aging device of the charging pile; the charging pile C1 module is responsible for detecting whether the vehicle is correctly connected and starting or stopping the charging operation. After the charging starts, the charging pile C1 module outputs the input power to the first relay control module; the first relay control module realizes the isolation between the charging pile C1 module and the charging pile C2 module, and is responsible for deciding whether to transfer the power from the C1 module to the C2 module according to the control signal, so as to ensure the safety and independence of power distribution; the charging pile C2 module provides the actual charging function, interacts with the charging gun and the vehicle, outputs the input power to the second relay control module, and monitors the charging process at the same time; the second relay control module receives the output signal of the charging pile C2 and controls whether to transfer the power to the next module (charging pile Cn module), playing the role of controlling and isolating the power transfer; the charging pile Cn module realizes the interaction with the charging gun, completes the specific charging task, outputs the power to the next-level module (if any) according to the demand, and monitors the status of the entire charging task; the Nth relay control module is responsible for controlling whether the power input of the charging pile Cn module is turned on. If there are subsequent charging pile modules, the power is continuously transferred to the next module to ensure the scalability of the system. The modular design improves flexibility. Each charging pile module (C1, C2, Cn) is isolated by the relay control module, ensuring the flexibility of the modular design; the independence of each module is enhanced, facilitating the expansion, maintenance and fault troubleshooting of the system; the safety is enhanced. The relay control module isolates the power transfer path to prevent electrical interference between modules and improve the safety and reliability of the system; when a certain module fails, it will not affect the normal operation of other modules; efficient power management. The power transfer is precisely controlled by the relay control module, avoiding unnecessary power loss, realizing the controllability of power distribution, and optimizing the overall energy efficiency of the system; supporting multi-level charging pile expansion. Through the relay control module, the system can be infinitely expanded to more charging pile modules according to the demand, realizing flexible system configuration; especially suitable for the large-scale parallel aging test scenario of charging piles. Each charging pile module interacts with the charging gun and the vehicle, supports the monitoring of the vehicle status and the start and stop control of charging, meeting the actual charging needs; the monitoring mechanism ensures the correct connection status of the vehicle and prevents misoperation and unsafe situations; the entire system is controlled layer by layer through the relay module, with clear logic, facilitating centralized management and scheduling; each level of relay module clarifies its own tasks, reducing the system complexity; through the modular design and the application of the relay control module, intelligent, safe and efficient power management and charging functions are realized, with good scalability and reliability. At the same time, it is particularly suitable for the aging test of large-scale charging piles, which can improve the stability and test efficiency of the charging pile system.

[0044] In an embodiment of the present invention, the power distribution module includes a distribution box and a switch QF. The power supply wires L and N of the distribution box are connected to the charging pile C1, and the wire L is connected in series with the switch QF.

[0045] In an embodiment of the present invention, the charging pile C1 module includes a first charging main control unit, a load detection resistor R 1CP , an audible and visual alarm lamp D1, a first charging gun, and a first charging seat. The power supply wires L and N of the power distribution module are fixedly connected to the first charging gun through a charging relay J inside the charging pile C1 at the rear end of the switch QF.

[0046] The working principle and effects of the above technical solution are as follows: The distribution box is responsible for supplying power and transmitting the power to the charging pile module through the wires L and N. The switch QF is used to control the on and off of the power. The wire L is connected in series with the switch QF, and the system power can be manually or automatically cut off for safety management; in the charging pile module structure, the first charging main control unit is responsible for controlling the entire charging process, managing and monitoring the charging parameters. The load detection resistor monitors the changes in current and voltage to judge the load status and detect abnormal conditions such as overvoltage and undervoltage; the audible and visual alarm lamp D1 provides intuitive charging status and fault prompts for users and gives warnings through audible and visual signals; the charging gun is connected to the power supply wire through the charging relay J and has the functions of plugging and fixing to complete the actual charging operation; after the power enters the system through the switch QF, it passes through the charging relay J and is transmitted to the first charging gun; the charging relay J controls the on and off to ensure that power is provided only after safety detection; the load detection resistor monitors the charging status in real time and triggers an alarm or stops charging when necessary; the intelligent aging test simulates the usage scenarios under different environmental conditions through long-term operation and monitoring. The main control unit can perform periodic self-checks to ensure that the device maintains stable performance during the aging process. It improves safety. Through the monitoring and fault warning mechanism, potential risks can be identified and addressed in a timely manner, reducing the occurrence of electrical accidents; it extends the device life. Through the intelligent aging test, weaknesses or fatigue points can be identified in advance and maintained to improve the overall life and reliability; it optimizes the user experience. The audible and visual alarm lamp provides instant status feedback, allowing users to quickly understand the device operation and reducing the risk of misoperation; it reduces the maintenance cost. The modular design makes it easy to detect problems and perform repairs, reducing the need for large-scale replacement of the entire system; the intelligent aging test not only ensures the stability of the device under high load and long-term use, but also provides data support for subsequent product improvement; it makes the charging device easier to maintain, more reliable, and has a good user interaction experience. The system ensures that the device is always in the best working state in an automatic and intelligent manner.

[0047] In an embodiment of the present invention, the first relay control module includes a middle relay J1 and a normally closed relay K1. The digital signal input terminal of the normally open contact NO of the middle relay J1 is connected to the digital signal output terminal of the first charging seat.

[0048] In one embodiment of the present invention, the charging pile C2 module includes: a second charging main control unit, a load detection resistor R 2CP , an indicator light D2, a second charging gun, and a second charging seat. The digital signal input end of the charging pile C2 module is connected to the normally open contact NO digital signal output end of the middle relay J1.

[0049] In one embodiment of the present invention, the second relay control module includes a middle relay J2 and a normally closed relay K2. The digital signal input end of the normally open contact NO of the middle relay J2 is connected to the digital signal output end of the second charging seat.

[0050] In one embodiment of the present invention, the charging pile Cn module includes an Nth charging main control unit, a load detection resistor R nCP , an indicator light Dn, an Nth charging gun, and an Nth charging seat. The digital signal output end of the charging pile Cn module is connected to the normally open contact NO digital signal output end of the middle relay Jn-1.

[0051] In one embodiment of the present invention, the Nth relay control module includes a middle relay JN and a normally closed relay KN. The digital signal input end of the normally open contact NO of the middle relay JN is connected to the digital signal output end of the Nth charging seat.

[0052] In one embodiment of the present invention, the resistance values of the load detection resistors of all the charging pile modules are 1KΩ, and the load detection resistors of all the charging pile modules are connected between the CP line and the PE line of the corresponding charging pile modules. The digital signal input ends of all the charging pile modules are connected in parallel to an audible and visual alarm light, and the audible and visual alarm light is controlled by a normally closed relay.

[0053] The working principle and effects of the above technical solution are as follows: Intermediate relays (J1, J2, …, JN) are used to control the on / off of the circuit. Their normally open contacts (NO) are connected to the digital signals of the charging dock and will only close when a signal is received, allowing the circuit to pass through. Normally closed relays (K1, K2, …, KN): They are normally closed and will open when a specific signal or situation is received, serving the function of emergency power-off; Each charging pile module is equipped with a main control unit, load detection resistors (R1CP, R2CP, …, RnCP), indicator lights (D1, D2, …, Dn), a charging gun, and a charging dock; The load detection resistor (with a value of 1KΩ) is connected between the CP line and the PE line to detect abnormal current or voltage conditions, thereby judging the load status; The transmission of digital signals is established through the normally open contacts of the intermediate relays and is transferred from one charging module to the next, thus realizing cascaded control between modules; The digital signal input ends of all charging pile modules are connected in parallel to an audible and visual alarm light to provide status indication; The normally closed relay controls the alarm light. When an abnormality is detected, the relay opens and the light turns on to provide a warning to the user. Safety is improved. Through the architecture of relays and normally closed relays, it is ensured that power can be cut off quickly in case of an abnormality, avoiding potential safety hazards; The load detection resistor continuously monitors the load status and promptly identifies abnormal electrical loads; For efficient management, each module transmits through digital signals to achieve intelligent cascading and coordinated control, improving the efficiency and response speed of the overall system; The audible and visual alarm light provides real-time status feedback to help quickly identify and handle abnormalities; Through modular design, each charging pile module can work independently or be combined for use, making the system have good scalability and easy maintenance; Through long-term performance monitoring and data collection of each module, it is possible to simulate the actual use environment and conduct intelligent aging tests; The data feedback is used for product improvement and user guidance, helping to extend the service life of the equipment and improve performance; enabling the charging pile equipment to maintain excellent performance during aging tests and also ensuring reliability and safety during actual use.

[0054] In an embodiment of the present invention, the circuit control method of the intelligent aging device for charging piles includes:

[0055] Close the switch QF, and the charging pile C1 is powered on;

[0056] The first charging main control unit inside the charging pile C1 detects through the charging gun that the resistance of the charging dock connected to it is a 1KΩ resistance value and determines it to be in a reliable connection state; 1CP Resistance is 1KΩ resistance value, and it is determined to be in a reliable connection state;

[0057] Close the charging relay J to power on the first charging gun, and further power on the first charging dock connected to the first charging gun;

[0058] When the first charging stand is powered on, the coil of the middle relay J1 is powered on. The normally open contact NO of the middle relay J1 in series on the first charging stand closes, and the normally closed contact NC opens, enabling the charging output of the charging pile C1 to power the charging pile C2 connected to the rear end of the normally open contact of the middle relay J1;

[0059] The normally closed contact NC of the middle relay J1 opens due to the energization of the coil, thus realizing the isolation between the auxiliary power supply and the main power supply of the charging pile C1, avoiding the situation where the power supply of the normal charging output of the charging pile C1 and the auxiliary power supply not controlled by it are powered simultaneously, resulting in the charging main control of the charging pile C1 misjudging charging adhesion and abnormal warning;

[0060] After the charging pile C2 is powered on, it enables the charging pile C2 to output normally and provide input for the subsequent charging piles, including: after the charging pile C2 is powered on, it forms a new power path with the subsequent charging piles, and the load of each charging pile is allocated through the dynamic load balancing optimization model, that is, the operating state of each pile is adjusted according to the real-time electrical characteristics and efficiency parameters. Specifically, the dynamic load balancing optimization model is:

[0061]

[0062] Among them, represents the balanced load power of the i-th charging pile, represents the actual power of the i-th charging pile, represents the efficiency coefficient of the charging pile, represents the leakage inductance in the transmission path of the j-th charging pile, represents the voltage drop during the connection of the j-th charging pile and the (j - 1)-th charging pile, represents the resistance of the load detection corresponding to the j-th charging pile;

[0063] After the dynamic load is optimized, that is, after the cascading process, the state of the charging pile is monitored in real time to detect faults. When the fault detection parameter is greater than or equal to the preset threshold, it indicates that the charging pile has a fault,

[0064]

[0065] Among them, represents the fault detection parameter, and are the output voltage and output current of the charging pile respectively, and are the input voltage and input current of the charging pile respectively.

[0066] The working principle and effects of the above technical solution are as follows: For initial power supply, switch QF is closed, and the power supply wire L energizes the charging pile C1, and at this time, the charging pile C1 is in the standby state; for connection detection, the first charging main control unit inside the charging pile C1 detects through the charging gun that the resistance value of R1CP of the charging base is 1 KΩ, indicating a reliable connection state and allowing continuous charging; when the charging process starts,

[0067] After detecting a reliable connection, the charging main control unit closes the charging relay J, so that the charging gun is powered on, and thus the charging base is also powered on; after the charging base is powered on, the coil of the middle relay J1 is energized, causing the normally open contact NO of J1 to close, enabling the charging pile C2 to be powered on and start working, and the normally closed contact NC of J1 to open, isolating the main power supply and auxiliary power supply of the charging pile C1 to prevent misjudgment; due to the closing of the normally open contact of the middle relay J1, after the charging pile C2 is powered on, it can output power normally and provide power input for subsequent charging piles (such as C3). Reliable cascaded power supply realizes the cascaded power supply of multiple charging piles. Each charging pile can start working only after the previous charging pile confirms successful charging, ensuring sequential and orderly power supply and management; by controlling the normally open and normally closed contacts through the middle relay J1, it can effectively prevent the charging pile C1 from being misjudged as an adhesion state due to uncontrolled auxiliary power supply, thereby reducing the occurrence of abnormal alarms; the safety and independence are enhanced. By switching the normally open contact and normally closed contact, it is ensured that the main power supply and auxiliary power supply of different charging piles do not conflict, ensuring the safe and independent operation among modules; efficient resource utilization. Through reasonable signal and power distribution, each charging pile can obtain power resources at an appropriate time and ensure the improvement of aging efficiency; through accurate detection, reliable signal control and effective isolation among modules, the safety, effectiveness and scalability of the multi-charging pile system are ensured.

[0068] In a multi-level connected charging pile system, each pile affects each other under load conditions. The dynamic load balancing optimization model aims to ensure that the power during the aging process can be transmitted smoothly in the system by considering the electrical characteristics of each node. The efficiency coefficient takes into account the energy efficiency of each charging pile. This enables the system to optimize the load distribution according to the efficiency of each charging pile. More efficient devices can bear more load, while less efficient devices can reduce the load, thereby improving the overall energy efficiency. By applying the dynamic load balancing formula in the above steps, the power transmission between each charging pile can be effectively managed, achieving a smooth transition of the system and minimizing the risk of any power outage or instability. Efficient resource utilization, avoiding overload or resource waste, thus improving the contribution and efficiency of each charging pile in the entire aging test system. Instantaneous fault detection, since the load is dynamically adjusted, any abnormal load change can be quickly reflected in the system monitoring, enabling the rapid detection of possible faults or connection problems. Making the aging test of the charging pile more efficient and providing a basis for achieving more precise load management and fault prediction, which is particularly important when implementing large-scale deployment of the charging pile network and can effectively improve the reliability and stability of the overall system. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A charging pile intelligent aging device, characterized in that: The charging pile intelligent aging device comprises: Power distribution module: provides input power for the entire charging pile intelligent aging device and transmits the input power to the charging pile C1 module; Charging pile C1 module: monitors whether the vehicle is correctly connected and starts and stops charging, and outputs the input power to the first relay control module; The first relay control module: isolates the charging pile C1 module from the charging pile C2 module, and controls whether to transfer power to the charging pile C2 module; Charging pile C2 module: provides charging function, interacts with the charging gun and the vehicle, and transmits the input power to the relay control module; The second relay control module: receives the output signal from the charging pile C2 and controls whether the power is transmitted to the charging pile Cn module; Charging pile Cn module: realizes interaction with the charging gun, completes the charging task, and outputs power to the next level as needed; The Nth relay control module: controls whether the power input of the charging pile Cn module is turned on. If there is a subsequent charging pile module, it continues to transmit power; The circuit control method of the charging pile intelligent aging device includes: Close switch QF, and charging pile C1 is powered; The first charging main control unit in the charging pile C1 detects the R of the charging base connected to it through the charging gun. 1CP The resistance is 1KΩ, which is considered to be a reliable connection state; The charging relay J is closed to power the charging gun 1, thereby powering the charging base 1 connected to the charging gun 1; The charging seat 1 is powered so that the coil of the middle relay J1 is powered, the normally open contact NO of the middle relay J1 connected in series with the charging seat 1 is closed, and the normally closed contact NC is disconnected, so that the charging output of the charging pile C1 is powered for the charging pile C2 connected to the rear end of the normally open contact of the middle relay J1; The normally closed contact NC of the middle relay J1 is disconnected due to the coil being energized, thereby isolating the auxiliary power supply from the main power supply of the charging pile C1; When the charging pile C2 is powered, it enables the charging pile C2 to charge and output normally and provide input for subsequent charging piles, including: when the charging pile C2 is powered, it forms a new power path with the subsequent charging piles, and distributes the load of each charging pile through a dynamic load balancing optimization model, that is, adjusting the operating state of each pile according to real-time electrical characteristics and efficiency parameters. Specifically, the dynamic load balancing optimization model is: in, represents the balanced load power of the i-th charging pile, represents the actual power of the i-th charging pile, represents the efficiency coefficient of the charging pile, represents the leakage inductance in the transmission path of the jth charging pile, represents the voltage drop during the connection between the j-th charging pile and the j-1-th charging pile, Represents the resistance of the load detection corresponding to the jth charging pile; After dynamic load optimization, i.e., after the cascading process, the charging pile status is monitored in real time to detect faults. When the fault detection parameter is greater than or equal to the preset threshold, it indicates that the charging pile has a fault. in, represents the fault detection parameters, and are the output voltage and output current of the charging pile respectively, and They are the input voltage and input current of the charging pile respectively.

2. According to claim 1, a charging pile intelligent aging device is characterized in that: The power distribution module includes: a distribution box and a switch QF, wherein the power supply wires L and N of the distribution box are connected to the charging pile C1, wherein the wire L is connected in series to the switch QF.

3. According to claim 1, a charging pile intelligent aging device is characterized in that: The charging pile C1 module includes: a first charging main control unit, a load detection resistor R 1CP , sound and light warning light D1, charging gun 1 and charging base 1, the power supply wires L and N of the power distribution module are fixedly connected to the charging gun 1 via the charging relay J inside the charging pile C1 at the rear end of the switch QF.

4. According to claim 1, a charging pile intelligent aging device is characterized in that: The first relay control module includes a middle relay J1 and a normally closed relay K1, and the digital signal input end of the normally open contact NO of the middle relay J1 is connected to the digital signal output end of the charging station 1.

5. According to claim 1, a charging pile intelligent aging device is characterized in that: The charging pile C2 module includes: a second charging main control unit, a load detection resistor R 2CP , indicator light D2, charging gun 2 and charging base 2, the digital signal input end of the charging pile C2 module is connected to the normally open contact NO digital signal output end of the middle relay J1.

6. According to claim 1, a charging pile intelligent aging device is characterized in that: The second relay control module includes a middle relay J2 and a normally closed relay K2, and the digital signal input end of the normally open contact NO of the middle relay J2 is connected to the digital signal output end of the second charging station.

7. According to claim 1, a charging pile intelligent aging device is characterized in that: The charging pile Cn module Nth charging main control unit, load detection resistor R nCP , indicator light Dn, charging gun N and charging base N, the digital signal output end of the charging pile Cn module is connected to the normally open contact NO digital signal output end of the middle relay Jn-1.

8. According to claim 1, a charging pile intelligent aging device is characterized in that: The Nth relay control module includes a middle relay JN and a normally closed relay KN, and the digital signal input end of the normally open contact NO of the middle relay JN is connected to the digital signal output end of the charging seat N.

9. The intelligent aging device for charging pile according to claim 1, characterized in that: The resistance value of the load detection resistor of all charging pile modules is 1KΩ and the load detection resistor of all charging pile modules is connected between the CP line and PE line of the corresponding charging pile module. The digital signal input end of all charging pile modules is connected in parallel to the sound and light warning light, and the sound and light warning light is controlled by a normally closed relay.

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