Intelligent distribution box

Abstract

The embodiment of the utility model provides an intelligent distribution box. The intelligent distribution box comprises a box body; the charging gun assembly cavity is arranged in the box body, and the charging gun assembly cavity is used for accommodating a charging gun assembly when the intelligent distribution box expands the charging gun function of the electric vehicle; the load metering board is arranged in the box body, the load metering board comprises a plurality of controllable load loops, a first signal terminal is arranged on the load metering board, and the first signal terminal is used for being matched with a second signal terminal of the charging gun assembly; and the control panel is arranged in the box body, the control panel is used for monitoring or controlling the plurality of controllable load loops, and the control panel is also used for monitoring or controlling the charging gun assembly after the first signal terminal is connected with the second signal terminal and the power line of the charging gun assembly is connected with at least one controllable load loop. According to the technical scheme of the utility model, the intelligent distribution box utilizes the modular design of the charging gun, so that a user can quickly add the function of the charging gun on the intelligent distribution box, and the requirements of different users can be met in terms of the requirements of the charging gun.

Description

Technical Field

[0001] This utility model relates to the field of intelligent distribution boxes, and more specifically, to an intelligent distribution box. Background Technology

[0002] The biggest difference between smart distribution boxes and traditional distribution boxes lies in their automation and intelligent monitoring capabilities. Traditional distribution boxes can only perform basic switching control functions and cannot monitor or remotely control the operating status of electrical equipment in real time. When data such as current and voltage exceed limits, they cannot issue timely warnings and take appropriate measures, leading to damage to electrical equipment and instability in the power system. Furthermore, ordinary distribution boxes lack real-time data collection and analysis of the power system, hindering effective energy conservation and optimization management. In contrast, smart distribution boxes possess powerful intelligent control functions in areas such as automated control, real-time power monitoring, remote control, and energy-saving optimization. Smart distribution boxes play a crucial role in home energy storage products, providing safe, intelligent, and efficient power supply for households and serving as key equipment for the stable operation and optimized management of home energy storage systems.

[0003] As the market share of new energy vehicles increases, the demand for car charging stations is also rising, and electric vehicles are gradually becoming one of the important electricity loads in households. However, unlike ordinary household electricity loads, electric vehicles require communication confirmation between the charging station and the electric vehicle before charging or discharging can occur. Therefore, electric vehicles cannot be simply connected to smart distribution boxes as electricity loads. One existing type of smart distribution box is independently set up with the home car charging station, with no interconnection. Therefore, this type of smart distribution box cannot provide home car charging stations with functions such as safe and intelligent power usage. Another existing type of smart distribution box deeply integrates the car charging gun function, combining the two into one. This type of smart distribution box is relatively expensive and can provide home car charging stations with functions such as safe and intelligent power usage. However, users who do not need the car charging gun function need to pay an additional fee. Therefore, this type of smart distribution box cannot adequately meet the needs of various users. Utility Model Content

[0004] In order to solve or improve the aforementioned technical problem of poor expandability of existing distribution boxes.

[0005] One objective of this utility model is to provide an intelligent power distribution box.

[0006] To achieve the above objectives, this utility model provides an intelligent power distribution box, comprising: a box body; a charging gun assembly cavity disposed within the box body, the charging gun assembly cavity being used to accommodate the charging gun assembly when the intelligent power distribution box expands the charging gun function of an electric vehicle; a load metering board disposed within the box body, the load metering board including multiple controllable load circuits, the load metering board being provided with a first signal terminal, the first signal terminal being used to adapt to a second signal terminal of the charging gun assembly; and a control board disposed within the box body, the control board being used to monitor or control the multiple controllable load circuits, and the control board being used to monitor or control the charging gun assembly after the first signal terminal and the second signal terminal are connected and the power line of the charging gun assembly is connected to at least one controllable load circuit.

[0007] The intelligent distribution box provided by this utility model has a pre-installed expansion interface and cavity for the charging gun assembly before leaving the factory. If the user needs to add electric vehicle charging during the use of the intelligent distribution box, the user can purchase a charging gun assembly compatible with the intelligent distribution box separately. By placing the charging gun assembly into the pre-installed cavity and connecting the relevant interfaces of the charging gun assembly to the pre-installed expansion interface, the intelligent distribution box can be quickly expanded to include electric vehicle charging functionality. The intelligent distribution box provided by this utility model utilizes a modular design for the charging gun function. This design allows for quick and convenient retrofitting of the charging gun assembly into the intelligent distribution box, while also meeting the needs of different users regarding charging gun requirements.

[0008] It is understandable that when using the charging gun assembly to charge and discharge an electric vehicle, communication confirmation must be established between the charging pile and the electric vehicle before the process can proceed. Therefore, the way an electric vehicle connects to the smart distribution box is different from the way ordinary electrical loads connect to the smart distribution box.

[0009] The intelligent distribution box includes a cabinet, a load metering board, and a control board. Within the cabinet, a charging gun assembly cavity is provided. An optional charging gun assembly is installed within this cavity, and its interface is expanded to accommodate different usage scenarios. Specifically, the charging gun assembly can be mounted onto the cabinet, essentially adding a charging gun assembly to the existing intelligent distribution box structure. The load metering board monitors and meters multiple controllable load circuits, recording parameters such as current and voltage for precise power management. It can be connected to each load circuit via power lines, and its first signal terminal connects to the second signal terminal of the charging gun assembly.

[0010] The controllable load circuit is integrated on the load metering board, allowing independent control of each connected load, such as turning the power on or off and adjusting the power supply. Each circuit has an independent terminal block. It can be understood that the controllable load circuit is used to connect to the power output port of the load metering board and receive signal commands from the control board.

[0011] The first signal terminal is located on the load metering board, which facilitates the insertion and removal of the signal line. It is connected to the second signal terminal of the charging gun assembly through the signal line to transmit control signals and status information.

[0012] It is important to emphasize that this solution includes a control board inside the enclosure, which manages the switching status of the load circuit and adjusts the system operation according to external signals. By connecting the signal line to the load metering board and the first signal terminal, and connecting the second signal terminal of the charging gun assembly to the first signal terminal via the signal line, the control board can effectively monitor or control the charging gun assembly after both the power line and the signal terminal are successfully connected. This expands the functionality of the charging gun and meets the requirements of different users in terms of charging gun needs.

[0013] In addition, the above-mentioned technical solution provided by this utility model may also have the following additional technical features:

[0014] In the above technical solution, the charging gun assembly is an optional accessory.

[0015] In this solution, the charging gun component is an optional accessory, allowing users to choose whether to equip it according to their actual needs. This enables the smart distribution box to better meet the diverse needs of different users. Some users may not need the charging function, while users who need to charge electric vehicles can choose to add this optional accessory, which improves the flexibility and customizability of the smart distribution box.

[0016] Furthermore, by offering the charging gun assembly as an optional accessory, the smart distribution box can be designed to be more compatible with different application scenarios and user needs. Even if the primary function of the smart distribution box is power distribution and management, its functionality can be expanded by adding the charging gun assembly without affecting its basic power management functions.

[0017] If a user does not choose the charging gun component in the early stages but has a charging need later, the charging gun component can be easily installed and integrated as an optional accessory to upgrade and transform the system without replacing the entire smart distribution box.

[0018] In the above technical solution, the side wall of the housing is provided with an opening; the charging gun assembly includes a connected gun body and a charging cable, the gun body is located outside the housing, the charging cable includes at least one power line and at least one signal line, a portion of the charging cable passes through the opening and extends into the housing, one end of the power line is used for electrical connection with at least one controllable load circuit; one end of the signal line is provided with a second signal terminal adapted to the first signal terminal.

[0019] By setting an opening on the box, specifically on the side wall, and defining the charging gun assembly including the gun body and the charging cable, the opening provides a channel for the charging cable of the charging gun assembly to enter the box, so that the charging cable can be smoothly introduced from the outside of the box into the box, realizing the connection with the internal components of the intelligent power distribution box, while maintaining the integrity of the box and a certain degree of protection.

[0020] The charging gun serves as the user interface for connecting electric vehicles for charging. The charging gun connects to the controllable load circuit and signal terminals inside the enclosure via a charging cable, allowing users to conveniently perform charging operations outside the enclosure and improving ease of use.

[0021] The charging cable includes a power line and a signal line. The power line transmits electricity, providing the necessary power for charging the electric vehicle. One end of the power line is electrically connected to at least one controllable load circuit, enabling power transmission from the smart distribution box to the electric vehicle and ensuring the charging function is realized. The signal line transmits signals to control the charging process and transmit relevant information. The signal line, along with the power line, is partially located outside the box and partially enters the box through an opening in the side wall. By providing a second signal terminal at one end of the signal line, compatible with the first signal terminal, it connects to the load metering board inside the smart distribution box. The control board inside the smart distribution box can then precisely control the charging process, achieving intelligent charging management.

[0022] In the above technical solution, the charging cable includes two power lines, which are a live wire and a ground wire; the controllable load circuit includes a circuit breaker, the live wire is electrically connected to the circuit breaker of one controllable load circuit, and the ground wire is electrically connected to the grounding terminal of the intelligent distribution box.

[0023] In this solution, the charging cable includes a live wire and a ground wire. The live wire serves as the main power supply line during the charging process, providing the necessary electrical energy for charging electric vehicles. The voltage of the live wire is the main energy source during the charging process. In some power supply scenarios, the voltage corresponding to a live wire is 120V. Of course, its voltage value usually depends on different charging standards (such as the 220V commonly found in home charging piles).

[0024] By electrically connecting a live wire to a circuit breaker of a controllable load circuit, the on / off state of the live wire can be controlled by the circuit breaker, enabling effective management of the live wire current during charging. In the event of overload, short circuit, or other abnormal conditions, the circuit breaker can quickly disconnect the live wire circuit, protecting the safety of the entire charging system and preventing damage to electrical equipment and dangerous situations such as fires.

[0025] The ground wire provides safety grounding protection for the entire charging system and is specifically connected to the grounding terminal of the entire intelligent distribution box. During charging, the ground wire can conduct any leakage current that may occur from the equipment to the ground, avoiding the risk of electric shock and ensuring the safety of users and equipment. It also ensures that the metal casing and other parts of the charging equipment remain at the same potential as the ground, preventing factors such as static electricity buildup that may affect the normal operation and safety of the equipment.

[0026] A well-grounded system helps improve the electromagnetic compatibility of the entire charging system and reduces the impact of electromagnetic interference on charging equipment and surrounding electronic devices.

[0027] In a controllable load circuit, the circuit breaker acts as a circuit protection device, monitoring the current in the circuit. When the current in the circuit exceeds the rated current of the circuit breaker (for example, a short circuit or overload occurs during charging), the circuit breaker will automatically disconnect the circuit to prevent excessive current from damaging the wires, charging equipment, and other electrical components in the circuit.

[0028] Under normal charging conditions, the circuit breaker is in the closed state, allowing current to flow and ensuring the normal progress of the charging process.

[0029] Because it is located in a controllable load circuit, the circuit breaker's operation can be monitored by the control board of the intelligent distribution box, thereby enabling functions such as monitoring the charging status and fault alarms. For example, when the circuit breaker disconnects the circuit due to a fault, the control board can detect this situation and send corresponding fault prompt information to the user.

[0030] In the above technical solution, at least one signal line is used for signal exchange and charging confirmation between the control board and the charging gun assembly after the first signal terminal and the second signal terminal are connected.

[0031] With the first and second signal terminals connected, the control board and the charging gun assembly exchange signals via signal lines to achieve control. Furthermore, the signal lines also facilitate charging confirmation between the control board and the charging gun assembly. This charging confirmation includes, but is not limited to, the handshake protocol transmission confirmation before the smart distribution box's mains power module or generator module supplies power to the charging gun assembly and initiates charging for the connected electric vehicle, or the handshake protocol transmission confirmation before the electric vehicle supplies power in reverse, such as when the electric vehicle's charge is transferred through the charging gun assembly to the smart distribution box and then to the power grid or household appliances.

[0032] In the above technical solution, at least one signal line includes two signal lines. The corresponding load metering board is provided with two first signal terminals, and the two corresponding signal lines are respectively connected to two second signal terminals. After the two first signal terminals and the two second signal terminals are connected, one signal line is used for signal exchange between the control board and the charging gun, and the other signal line is used for charging confirmation.

[0033] In this scheme, there are two signal lines. The two signal lines are respectively located on the first signal terminal of the load metering board. When the two first signal terminals are respectively connected to the corresponding second signal terminals, one signal line performs signal exchange and the other signal line performs charging confirmation.

[0034] In addition, a single signal line involves only one function, reducing the possibility of failure. Even if a failure occurs, the specific faulty signal line can be identified and the corresponding line replaced, reducing replacement costs.

[0035] In the above technical solution, the charging cable includes three power lines, namely a first live wire, a second live wire, and a ground wire; the controllable load circuit includes a circuit breaker, the first live wire and the second live wire are electrically connected to the circuit breakers corresponding to the two controllable load circuits respectively, and the wires are electrically connected to the grounding terminal of the intelligent distribution box.

[0036] In this design, the charging cable includes a first live wire, a second live wire, and a ground wire. The first and second live wires are electrically connected to a circuit breaker. These live wires serve as two power supply lines during the charging process. Each live wire is electrically connected to a circuit breaker of a controllable load circuit. The current in the first live wire is managed through the control of this circuit breaker. During normal charging, the circuit breaker closes, and current flows through the first and second live wires to charge the electric vehicle or perform reverse charging. In case of abnormal conditions such as overload or short circuit, the circuit breaker opens, protecting the circuit and equipment.

[0037] Generally, the voltage corresponding to a live wire is 120V. In this solution, it can be adapted to voltage scenarios of 240V.

[0038] In the above technical solution, the charging gun assembly is used to connect with the electric vehicle. After the charging gun body of the charging gun assembly is connected to the charging port of the electric vehicle, the control board is used to control the charging gun assembly to charge the electric vehicle, or to control the electric vehicle's power to be transmitted to the smart distribution box.

[0039] Once the charging gun assembly is connected to the charging port of the electric vehicle, the control board can initiate the charging process, ensuring that electrical energy is transferred from the controllable load circuit of the intelligent power distribution box to the battery of the electric vehicle through the charging gun assembly, thereby realizing the charging function of the electric vehicle.

[0040] In addition, it can not only control the charging of electric vehicles, but also control the transmission of electric vehicle power to the outside world, which can meet the application needs of vehicle-to-grid (V2G) and help to achieve optimized energy utilization and grid balance.

[0041] By controlling the direction of power transmission in electric vehicles, bidirectional energy flow is achieved. During peak grid demand periods, electric vehicles can feed energy back into the grid, playing a role in peak shaving; during off-peak demand periods, they can be charged, achieving efficient energy utilization.

[0042] The above technical solution also includes: a card slot, which is located inside the box and is configured to correspond to the opening; and a clamp, which is detachably connected to the card slot and is connected to the card slot to fix the charging cable.

[0043] In this technical solution, the management and fixing functions of the charging cable are further enhanced by the use of slots and clamps. The slots are located inside the housing and are positioned to correspond to the opening, ensuring that the charging cable can pass through smoothly and providing a dedicated area for the charging cable to be placed, preventing it from interfering with other electrical components. The clamps are detachably connected to the slots to fix the charging cable in place, ensuring that the charging cable will not loosen or be pulled during use.

[0044] It is understandable that the card slot is positioned to correspond with the opening, allowing the charging cable to easily enter the casing through the opening and be well secured and managed inside the casing.

[0045] In the above technical solution, the controllable load circuit includes a load circuit breaker, and one end of the power line is connected to the load circuit breaker.

[0046] In this technical solution, the controllable load circuit mainly includes a load circuit breaker, which is used to control the power supply of each load inside the intelligent distribution box and can cut off the current in time when a fault occurs to protect the load equipment.

[0047] One end of the power line is connected to the load circuit breaker, which allows electrical energy to be introduced from the power source to the load inside the smart distribution box.

[0048] Load circuit breakers are typically connected to a control board so that the control board can control the on / off state of the load as needed.

[0049] The above technical solution also includes: an input module, the input module and the load circuit breaker are spaced apart along the first direction of the enclosure, the enclosure is provided with an input hole on one side of the first direction for the input cable to pass through, and the input module is located close to the input hole.

[0050] In this technical solution, the input module and the load circuit breaker are spaced apart along the first direction of the enclosure, and an input hole for the input cable to pass through is provided on one side of the enclosure. The input module is positioned close to the input hole. The input cable enters the intelligent distribution box through the input hole and connects to the input module. The input module and the load circuit breaker are spaced apart along the first direction and connected through internal circuitry to achieve power distribution and protection.

[0051] The input port is located on one side of the enclosure for easy access to input cables. The input module is positioned close to the input port, allowing for direct connection of input cables, reducing line length and losses. Load circuit breakers are spaced apart from the input module in the first direction, facilitating independent control and protection of each load.

[0052] By arranging the input modules and load circuit breakers at intervals along a first direction and providing input ports on one side of the enclosure, this design optimizes the structure and function of the intelligent distribution box. It offers convenient cable access, reduces line losses, enables independent control and protection of individual loads, and improves system safety and reliability.

[0053] The above technical solution also includes: a cover plate, which is detachably connected to the side wall, and the cover plate is connected to the side wall to cover the opening.

[0054] Since the charging gun assembly is optional, when the charging gun assembly is not installed, the opening can be covered by a removable cover plate, which facilitates maintenance and wiring operations while protecting the internal components.

[0055] Generally, some charging gun components are located outside the enclosure for easy plugging and unplugging of the charging gun, while the charging cable is brought into the enclosure for connection, ensuring that the cover can tightly cover the opening for protection and safety.

[0056] The above technical solution also includes: a leakage current protector, which is installed on the cover plate, and the charging cable passes through the leakage current protector.

[0057] In this technical solution, a residual current device (RCD) is installed on the cover plate for inspection and maintenance when needed, and also facilitates rapid power disconnection in the event of a leakage. Furthermore, since the charging cable passes through the RCD, the RCD detects leakage in the circuit and quickly cuts off the power supply when a leakage occurs, protecting the safety of personnel and equipment. Specifically, the power lines in the charging cable pass through the RCD, allowing the RCD to monitor the current in the power lines in real time.

[0058] Understandably, a residual current device (RCD) can promptly detect and handle leakage problems, ensuring the safe operation of the electrical system. When the detected leakage current exceeds the set value, the RCD will quickly cut off the power supply to prevent electric shock and equipment damage.

[0059] Additional aspects and advantages of the present invention will become apparent in the following description or may be learned by practice of the present invention. Attached Figure Description

[0060] Figure 1 A schematic diagram of the structure of an intelligent distribution box according to an embodiment of the present invention is shown;

[0061] Figure 2 A schematic diagram of the structure of a load metering plate according to an embodiment of the present invention is shown;

[0062] Figure 3 A schematic diagram of the structure of a dual-load metering plate according to an embodiment of the present invention is shown;

[0063] Figure 4 A schematic diagram of the structure of a charging gun assembly according to an embodiment of the present invention is shown;

[0064] Figure 5 A schematic diagram of the structure of an intelligent distribution box according to an embodiment of this application is shown;

[0065] Figure 6 A schematic diagram of a power distribution system according to an embodiment of the present invention is shown.

[0066] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0067] 100: Intelligent distribution box; 102: Box body; 1022: Opening; 1024: Input hole; 103: Charging gun assembly cavity; 104: Cover plate; 106: Control board; 1062: Circuit breaker; 1064: Load circuit breaker; 1066: Input module; 108: Charging gun assembly; 1082: Gun body; 110: Charging cable; 1102: Power line; 1104: Signal line; 112: Load metering board; 1142: Slot; 1144: Clamp; 116: Residual current device; 1182: First signal terminal; 1184: Second signal terminal;

[0068] 200: Power distribution system; 202: Input cable; 204: Electric vehicle. Detailed Implementation

[0069] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0070] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0071] One existing type of smart distribution box is set up independently from the home car charging station, with no interconnection between the two. Therefore, this type of smart distribution box cannot provide home car charging stations with functions such as safe and intelligent power supply. Another existing type of smart distribution box deeply integrates the car charging gun function, combining the two into one. Its cost is relatively high. This type of smart distribution box can provide home car charging stations with functions such as safe and intelligent power supply, but users who do not need the car charging gun function need to pay an additional fee. Therefore, this type of smart distribution box cannot well meet the needs of various users.

[0072] In view of this, such as Figure 1 , Figure 4 and Figure 5 As shown, this utility model proposes a new intelligent power distribution box 100, comprising: a box body 102; a charging gun assembly cavity 103 disposed within the box body 102, the charging gun assembly cavity 103 being used to accommodate the charging gun assembly 108 when the intelligent power distribution box 100 expands the charging gun function of an electric vehicle; a load metering board 112 disposed within the box body 102, the load metering board 112 including multiple controllable load circuits, the load metering board 112 being provided with a first signal terminal 1182, the first signal terminal 1182 being used to adapt to the second signal terminal 1184 of the charging gun assembly 108; and a control board disposed within the box body 102, the control board being used to monitor or control multiple controllable load circuits, the control board also being used to monitor or control the charging gun assembly 108 after the first signal terminal 1182 and the second signal terminal 1184 are connected and the power line 1102 of the charging gun assembly 108 is connected to at least one controllable load circuit.

[0073] The intelligent power distribution box 100 provided by this utility model has a reserved expansion interface for the charging gun assembly 108 and a reserved charging gun assembly cavity 103 before leaving the factory. If the user needs to charge an electric vehicle during the use of the intelligent power distribution box 100, the user can purchase a charging gun assembly 108 that is compatible with the intelligent power distribution box 100. By placing the charging gun assembly 108 into the reserved charging gun assembly cavity 103 and connecting the relevant interface of the charging gun assembly 108 to the reserved charging gun assembly expansion interface, the intelligent power distribution box 100 can be quickly expanded to include an electric vehicle charging gun. The intelligent distribution box 100 provided by this utility model utilizes a modular design for the charging gun function. This design allows for quick and convenient installation of the charging gun assembly 108 on the intelligent distribution box 100. Furthermore, for users who do not require the charging gun function, the charging gun assembly 108 is not installed, and users do not need to pay extra for it. For users who do require the charging gun function, the intelligent distribution box 100 can also be quickly expanded to include the charging gun function. Therefore, the intelligent distribution box 100 provided by this utility model can well meet the requirements of different users in terms of charging gun needs.

[0074] It is understandable that when using the charging gun assembly 108 to charge and discharge an electric vehicle, it is necessary to communicate and confirm with the electric vehicle through the charging pile before it can be done. Therefore, the way the electric vehicle is connected to the smart distribution box 100 is different from the way ordinary electrical loads are connected to the smart distribution box 100.

[0075] The intelligent distribution box 100 includes a box body 102, a load metering board 112, and a control board. A charging gun assembly cavity 103 is provided within the box body 102. An optional charging gun assembly 108 is installed within the charging gun assembly cavity 103, and its interface is expanded. This allows for the expansion of the controllable load of the intelligent distribution box 100 according to different usage scenarios, essentially adding the charging gun assembly 108 to the existing intelligent distribution box 100. Specifically, the charging gun assembly 108 can be mounted onto the box body 102, meaning it can be added to the existing structure of the intelligent distribution box 100. The load metering board 112 provides monitoring and metering of multiple controllable load circuits, recording parameters such as current and voltage for precise power management. It can be connected to each load circuit via power lines 1102. A first signal terminal 1182 is used to connect to the second signal terminal 1184 of the charging gun assembly 108.

[0076] The controllable load circuit is integrated on the load metering board 112, allowing independent control of each connected load, such as turning the power on or off, adjusting the power supply, etc. Each circuit has an independent wiring terminal. It can be understood that the controllable load circuit is used to connect to the power output port of the load metering board 112 and receive signal commands from the control board.

[0077] The first signal terminal 1182 is located on the load metering board 112, which facilitates the insertion and removal of the signal line 1104. It is connected to the second signal terminal 1184 of the charging gun assembly 108 through the signal line 1104 to transmit control signals and status information.

[0078] It should be emphasized that in this solution, a control board is provided inside the housing 102, which can manage the switching status of the load circuit and adjust the system operation according to external signals. By connecting the signal line 1104 to the load metering board 112 and the first signal terminal 1182, and connecting the second signal terminal 1184 of the charging gun assembly 108 to the first signal terminal 1182 through the signal line 1104, it is ensured that after the power line 1102 and the signal terminal are successfully connected, the control board can effectively monitor or control the charging gun assembly 108, thereby expanding the functions.

[0079] With the first signal terminal 1182 and the second signal terminal 1184 connected, the control board and the charging gun assembly 108 exchange signals via the signal line 1104 to achieve control. Furthermore, the signal line 1104 also enables charging confirmation between the control board and the charging gun assembly 108. This charging confirmation includes, but is not limited to, the handshake protocol transmission confirmation before the mains power module or generator module of the smart distribution box 100 supplies power to the charging gun assembly 108 to connect the electric vehicle, or the handshake protocol transmission confirmation before the electric vehicle supplies power in reverse, such as the transmission of electricity from the electric vehicle to the smart distribution box 100 via the charging gun assembly 108 and then to the power grid or household appliances.

[0080] In one specific embodiment, there are two signal lines 1104. The two signal lines 1104 are respectively provided with first signal terminals 1182 on the load metering board 112. When the two first signal terminals 1182 are respectively connected to the corresponding second signal terminals 1184, one of the signal lines 1104 performs signal exchange and the other signal line 1104 performs charging confirmation.

[0081] In addition, each signal line 1104 is involved in only one function, which reduces the possibility of failure. Even if a failure occurs, the corresponding line can be replaced by identifying the specific faulty signal line 1104, thus reducing replacement costs.

[0082] The intelligent distribution box 100 includes a box body 102, a load metering board 112, and a control board 106. A charging gun assembly cavity is provided within the box body. Based on this, an optional charging gun assembly 108 is installed within the charging gun assembly cavity, and the interface of the charging gun assembly is expanded. This allows for the expansion of the controllable load of the intelligent distribution box 100 according to different usage scenarios, i.e., adding the use of a charging gun assembly to the existing intelligent distribution box. Specifically, the charging gun assembly 108 can be mounted onto the box body 102, meaning it can be added to the existing structure of the intelligent distribution box 100. The load metering board 112 provides monitoring and metering of multiple controllable load circuits, recording parameters such as current and voltage for precise power management. It can be connected to each load circuit via power lines 1102, and a first signal terminal 1182 is used to connect to the second signal terminal 1184 of the charging gun assembly 108.

[0083] Among them, the controllable load circuit is integrated into such Figure 2 and Figure 3 The load metering board 112 shown allows for independent control of each connected load, such as turning the power on or off, adjusting the power supply, etc. Each circuit has an independent terminal block. It can be understood that the controllable load circuit is used to connect to the power output port of the load metering board 112 and receive signal commands from the control board 106.

[0084] The first signal terminal 1182 is located on the load metering board 112, which facilitates the insertion and removal of the signal line 1104. It is connected to the second signal terminal 1184 of the charging gun assembly 108 through the signal line 1104 to transmit control signals and status information.

[0085] It should be emphasized that in this solution, a control board 106 is provided inside the housing 102, which can manage the switching status of the load circuit and adjust the system operation according to external signals. By connecting the signal line 1104 to the load metering board 112 and the first signal terminal 1182, and connecting the second signal terminal 1184 of the charging gun assembly 108 to the first signal terminal 1182 through the signal line 1104, it is ensured that after the power line 1102 and the signal terminal are successfully connected, the control board 106 can effectively monitor or control the charging gun assembly 108, thereby expanding the load function.

[0086] The monitoring of the charging gun assembly 108 includes, but is not limited to, voltage monitoring and current monitoring.

[0087] In one specific embodiment, the charging gun assembly 108 is an optional accessory, allowing users to choose whether to equip it according to their actual needs. This enables the smart distribution box 100 to better meet the diverse needs of different users. Some users may not need the charging function, while users who need to charge electric vehicles can choose to add this optional accessory, thus improving the flexibility and customizability of the smart distribution box 100.

[0088] Furthermore, by offering the charging gun assembly 108 as an optional accessory, the smart distribution box 100 can be better designed to accommodate different application scenarios and user needs. Even though the primary function of the smart distribution box 100 is power distribution and management, its functionality can be expanded by adding the charging gun assembly 108 without affecting its basic power management functions.

[0089] If a user does not select the charging gun component 108 in the early stages, but has a charging need later, the charging gun component 108 can be easily installed and integrated as an optional accessory to upgrade and transform the system without replacing the entire smart distribution box 100.

[0090] In one embodiment, an opening 1022 is provided on the housing 102, specifically on the side wall, defining the charging gun assembly 108 as including the gun body 1082 and the charging cable 110. The opening 1022 provides a channel for the charging cable 110 of the charging gun assembly 108 to enter the housing 102, so that the charging cable 110 can be smoothly introduced from outside the housing 102 into the housing 102 to achieve connection with the internal components of the intelligent power distribution box 100, while maintaining the integrity of the housing 102 and a certain degree of protection.

[0091] The gun body 1082 serves as the user's interface for connecting electric vehicles for charging. The gun body 1082 is connected to the controllable load circuit and signal terminals inside the housing 102 via the charging cable 110, allowing users to conveniently perform charging operations outside the housing 102, thus improving ease of use.

[0092] The charging cable 110 includes a power line 1102 and a signal line 1104. The power line 1102 transmits power, providing the electrical energy required for charging the electric vehicle. One end of the power line 1102 is electrically connected to at least one controllable load circuit, realizing power transmission from the intelligent distribution box 100 to the electric vehicle and ensuring the charging function. The signal line 1104 transmits signals to control the charging process and transmit relevant information. The signal line 1104, together with the power line 1102, is partially located outside the box 102 and partially enters the box 102 through an opening 1022 in the side wall of the box 102. By providing a second signal terminal 1184 at one end of the signal line 1104 that is compatible with the first signal terminal 1182, a signal connection is made with the load metering board 112 inside the intelligent distribution box 100. The control board 106 inside the intelligent distribution box 100 can precisely control the charging process and realize intelligent charging management.

[0093] In one specific embodiment, the charging cable 110 includes a live wire and a ground wire. The live wire serves as the main power supply line during the charging process, providing the necessary electrical energy for charging the electric vehicle. The voltage of the live wire is the main energy source during the charging process. Generally, the voltage corresponding to a live wire is 120V. Of course, its voltage value usually depends on different charging standards (such as the 220V commonly found in home charging piles).

[0094] By electrically connecting a live wire to a circuit breaker 1062 that controls a controllable load circuit, the on / off state of the live wire can be controlled by the circuit breaker 1062, thus achieving effective management of the live wire current during charging. In the event of overload, short circuit, or other abnormal conditions, the circuit breaker 1062 can quickly disconnect the live wire circuit, protecting the safety of the entire charging system and preventing damage to electrical equipment and dangerous situations such as fires.

[0095] The ground wire provides safety grounding protection for the entire charging system and is specifically connected to the grounding terminal of the entire intelligent distribution box. During charging, the ground wire can conduct any leakage current that may occur from the equipment to the ground, avoiding the risk of electric shock and ensuring the safety of users and equipment. It also ensures that the metal casing and other parts of the charging equipment remain at the same potential as the ground, preventing factors such as static electricity buildup that may affect the normal operation and safety of the equipment.

[0096] A well-grounded system helps improve the electromagnetic compatibility of the entire charging system and reduces the impact of electromagnetic interference on charging equipment and surrounding electronic devices.

[0097] The circuit breaker 1062 in the controllable load circuit acts as a circuit protection device, capable of monitoring the current in the circuit. When the current in the circuit exceeds the rated current of the circuit breaker 1062 (for example, a short circuit or overload occurs during charging), the circuit breaker 1062 will automatically disconnect the circuit to prevent excessive current from damaging the wires, charging equipment, and other electrical components in the circuit.

[0098] Under normal charging conditions, circuit breaker 1062 is in the closed state, allowing current to pass through and ensuring the normal progress of the charging process.

[0099] Because it is located in a controllable load circuit, the operation of the circuit breaker 1062 can be monitored by the control board 106 of the intelligent distribution box 100, thereby enabling functions such as monitoring the charging status and fault alarms. For example, when the circuit breaker 1062 disconnects the circuit due to a fault, the control board 106 can detect this situation and send corresponding fault prompt information to the user.

[0100] In another embodiment, the charging cable 110 includes a first live wire, a second live wire, and a ground wire. The first and second live wires are electrically connected to a circuit breaker 1062. These live wires serve as two power supply lines during the charging process. Each live wire is electrically connected to a circuit breaker 1062 of a controllable load circuit. The current in the first live wire is managed through the control of the circuit breaker 1062. During normal charging, the circuit breaker 1062 is closed, and current flows through the first and second live wires to charge the electric vehicle or perform reverse charging. In case of abnormal conditions such as overload or short circuit, the circuit breaker 1062 is open, protecting the circuit and equipment.

[0101] Generally, the voltage corresponding to a live wire is 120V. In this solution, it can be adapted to voltage scenarios of 240V.

[0102] When the gun body 1082 of the charging gun assembly 108 is connected to the charging port of the electric vehicle, the control board 106 can start the charging process to ensure that electrical energy is transferred from the controllable load circuit of the intelligent distribution box 100 to the battery of the electric vehicle through the charging gun assembly 108, thereby realizing the charging function of the electric vehicle.

[0103] In addition, it can not only control the charging of electric vehicles, but also control the transmission of electric vehicle power to the outside world, which can meet the application needs of vehicle-to-grid (V2G) and help to achieve optimized energy utilization and grid balance.

[0104] By controlling the direction of power transmission in electric vehicles, bidirectional energy flow is achieved. During peak grid demand periods, electric vehicles can feed energy back into the grid, playing a role in peak shaving; during off-peak demand periods, they can be charged, achieving efficient energy utilization.

[0105] The on-site installation procedure is as follows: Remove cover plate 104 and open opening 1022 on the side wall of housing 102. Pass the charging gun cable through opening 1022 and connect power line 1102 and signal line 1104. Connect power line 1102 to circuit breaker 1062 and signal line 1104 to load metering board 112. After installation, replace cover plate 104 and secure it, ensuring that charging gun assembly 108 is firmly connected.

[0106] Optionally, the management and fixing functions of the charging cable 110 are further enhanced by the slot 1142 and the clamp 1144. The slot 1142 is located inside the housing 102 and is correspondingly set to the opening 1022 to ensure that the charging cable 110 can pass through smoothly, providing a dedicated area for the charging cable 110 and preventing it from interfering with other electrical components. The clamp 1144 is detachably connected to the slot 1142 and is used to fix the charging cable 110, ensuring that the charging cable 110 will not loosen or be pulled during use, and preventing the charging cable from being pulled by external force and tearing the internal wiring.

[0107] It is understandable that the position of the card slot 1142 corresponds to the opening 1022, so that the charging cable 110 can easily enter the housing 102 through the opening 1022, and at the same time be well fixed and managed inside the housing 102.

[0108] The clamp 1144 is detachably connected to the slot 1142 to secure the charging cable 110. Users can quickly install or remove the charging cable 110 as needed, enhancing flexibility.

[0109] The card slot 1142 is located inside the housing 102, near the opening 1022, to ensure that the charging cable 110 can be smoothly inserted into the card slot 1142 for fixing after entering the housing 102.

[0110] By fixing the charging cable 110 inside the card slot 1142, interference between the charging cable 110 and other electrical components is avoided, reducing the risk of short circuits or poor contact.

[0111] Furthermore, the circuit breaker 1062 mainly includes a load circuit breaker 1064, which is used to control the power supply of each load inside the intelligent distribution box 100 and can cut off the current in time when a fault occurs to protect the load equipment.

[0112] One end of the power line 1102 is connected to the load circuit breaker 1064, allowing electrical energy to be introduced from the power source to the load inside the smart distribution box 100. The input module 1066 is connected to an external power source (e.g., the power grid) to ensure that electrical energy can safely flow into the smart distribution box 100.

[0113] The load circuit breaker 1064 is typically connected to the control board 106 so that the control board 106 can control the on / off state of the load as needed.

[0114] The input module 1066 is typically located at the front or top of the intelligent distribution box 100 for user convenience in operation and maintenance, ensuring that the power cord can be smoothly connected to the input module 1066. The load circuit breaker 1064 is generally located inside the intelligent distribution box 100, adjacent to the control board 106 and the load metering board 112, to enable effective current control and monitoring.

[0115] By connecting the power line 1102 to the load circuit breaker 1064, the intelligent distribution box 100 can effectively manage and control the power supply, ensuring the safe operation of each load.

[0116] The connection between the load circuit breaker 1064 and the control board 106 enables users to monitor the load status in real time through the intelligent control system and achieve remote control, thereby improving the intelligence level of the intelligent distribution box 100.

[0117] The design of the 1062 circuit breaker allows users to quickly locate the problem and perform maintenance or replacement when a fault occurs, reducing downtime and improving system reliability.

[0118] like Figure 5 As shown, by integrating the load circuit breaker 1064 and the input module 1066 into the intelligent distribution box 100, this solution achieves effective management and safety protection of electrical energy. This not only improves the safety and reliability of the intelligent distribution box 100 but also provides users with a more flexible and intelligent power management solution. Overall, the intelligent distribution box 100 can meet the charging needs of electric vehicle 204 and other loads, ensuring stable operation under various working environments.

[0119] In some embodiments, optionally, the input module 1066 and the load circuit breaker 1064 are spaced apart along a first direction of the enclosure 102, and an input hole 1024 for the input cable 202 to pass through is provided on one side of the enclosure 102, with the input module 1066 positioned close to the input hole 1024. The input cable 202 enters the intelligent distribution box 100 through the input hole 1024 and connects to the input module 1066. The input module 1066 and the load circuit breaker 1064 are spaced apart in the first direction and connected through internal circuitry to achieve power distribution and protection.

[0120] Input port 1024 is located on one side of housing 102 for easy access to input cable 202. Input module 1066 is positioned close to input port 1024, allowing input cable 202 to be directly connected to input module 1066, reducing line length and losses. Load circuit breaker 1064 is spaced apart from input module 1066 in the first direction, facilitating independent control and protection of each load.

[0121] By arranging the input module 1066 and the load circuit breaker 1064 at intervals along a first direction, and providing an input port 1024 on one side of the enclosure 102, this design optimizes the structure and function of the intelligent distribution box 100. It provides a convenient cable connection method, reduces line losses, enables independent control and protection of each load, and improves the safety and reliability of the system. This design makes the intelligent distribution box 100 more convenient, efficient, and safe in practical applications.

[0122] In some embodiments, optionally, a residual current device (RCD) 116 is provided on the cover plate 104 for inspection and maintenance when needed, and also to facilitate rapid power disconnection in the event of a leakage. Furthermore, since the power line 1102 passes through the RCD 116, the RCD 116 is used to detect leakage in the circuit and can quickly disconnect the power supply when a leakage occurs to protect the safety of personnel and equipment. The passage of the power line 1102 through the RCD 116 allows the RCD 116 to monitor the current in the power line 1102 in real time.

[0123] It is understandable that the residual current device 116 can promptly detect and handle leakage problems, ensuring the safe operation of the electrical system. When the detected leakage current exceeds the set value, the residual current device 116 will quickly cut off the power supply to prevent electric shock to personnel and damage to equipment.

[0124] Optionally, the charging cable 110 includes two power lines 1102 for transmitting electrical energy. Each power line 1102 passes through a residual current device 116 for detecting and protecting against leakage. One end of each power line 1102 is connected to a circuit breaker 1062 for controlling the on / off state of the power line 1102.

[0125] Each power line 1102 passes through a corresponding residual current device (RCD) 116, enabling the RCD 116 to monitor leakage current on the power line 1102. One end of each power line 1102 is connected to a circuit breaker 1062, and the circuit breaker 1062 controls the on / off state of the power line 1102.

[0126] The residual current device 116 is located between the charging cable 110 and the circuit breaker 1062, close to the input end of the charging cable 110. The circuit breaker 1062 is located at the output end of the residual current device 116 and is connected to the load.

[0127] Each power line 1102 has an independent residual current device (RCD) 116, which can promptly detect leakage and cut off the power supply, improving the safety of the charging process and providing multiple protection mechanisms to ensure safe and reliable charging. The RCD 116 can detect leakage in a timely manner, and the circuit breaker 1062 can control the on / off state of the power line 1102 and provide overload protection, improving the safety and flexibility of the intelligent distribution box 100. At the same time, this design also facilitates the management and maintenance of the charging process, meeting the needs of different users.

[0128] like Figure 6 As shown, this application provides an embodiment of a power distribution system 200, which includes an intelligent distribution box 100 and an input cable 202. The intelligent distribution box 100 has multiple functions, such as controlling the on / off state of loads, enabling reverse charging of vehicle chargers, and metering loads. The input cable 202 is connected to the circuit breaker 1062 of the intelligent distribution box 100, introducing electrical energy from an external power source into the intelligent distribution box 100. This connection method ensures the input and distribution of electrical energy, providing a stable power supply for the system.

[0129] When the electric vehicle 204 is connected to the charging gun assembly 108 of the smart distribution box 100, and it is necessary to transfer the power of the battery in the electric vehicle 204 to the power grid, the reverse charging function of the vehicle charger is realized. This helps to balance the grid load, improve energy utilization efficiency, and also provides a possible source of income for car owners.

[0130] On the other hand, when it is necessary to charge the electric vehicle 204, the charging gun assembly 108 delivers the power from the input cable 202 to the power battery of the electric vehicle 204 to meet the vehicle's driving needs.

[0131] The charging gun assembly 108 has the ability to transmit electrical energy bidirectionally, allowing it to both feed electrical energy from the electric vehicle 204 back to the grid and charge the electric vehicle 204 from the grid. This function makes the charging gun assembly 108 a key device connecting the electric vehicle 204 and the power grid. Depending on actual needs, the charging gun assembly 108 can flexibly switch between energy feedback and energy replenishment modes to meet different usage scenarios and requirements.

[0132] In the event of a power outage or other emergency, the electric vehicle 204 can serve as a backup power source, delivering the power from the battery to the electrical loads via the charging gun assembly 108, providing temporary power support for critical equipment or appliances.

[0133] The mobility of the electric vehicle 204 allows it to serve as a mobile power supply station. For example, in places without a fixed power source, such as outdoor activities, camping, or construction sites, the electric vehicle 204 can supply power to various electrical devices via the charging gun assembly 108.

[0134] When the battery of electric vehicle 204 has remaining charge, it can be used to meet the needs of other electrical loads, rather than simply feeding the energy back into the grid. This allows for more efficient use of the energy in electric vehicle 204, improving overall energy efficiency.

[0135] In some cases, by directly using the electricity generated by the electric vehicle 204 to power the electrical load, the dependence on the power grid can be reduced and the load pressure on the power grid can be lowered.

[0136] In one specific embodiment, a smart distribution box is provided that supports users to quickly install charging gun modules on-site. Its hardware is compatible with smart distribution box functions and can also achieve reverse charging for vehicles. When users want to install charging modules, they can quickly add functionality. The smart distribution box includes: a control module, a chassis (i.e., the enclosure), a standard 8-channel controllable load & AC / motor input (i.e., control board), an optional 12-channel controllable load module, an inner door panel, and a front cover.

[0137] The 4-channel controllable load metering board is installed at the standard 8-channel controllable load & AC power generator input. Its functions include: intelligent on / off controllable load control and reverse charging function for AC charging piles. Without a charging gun, its function is simply to control the on / off of the controllable load. When a charging gun needs to be connected, the two boards must be connected with a signal cable. Its function is to control the connection via software signals; when a charging pile is connected, the charging gun signal cable is then connected to enable signal access for the charging gun.

[0138] According to the intelligent distribution box and power distribution system provided by this utility model, the modular design allows users to quickly assemble and add functions, realizing the functions of electric vehicle charging and reverse charging, while also having intelligent load management.

[0139] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0140] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0141] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0142] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An intelligent distribution box, characterized in that, include: Box; A charging gun assembly cavity is disposed within the housing, and the charging gun assembly cavity is used to accommodate the charging gun assembly when the intelligent power distribution box expands the charging gun function of the electric vehicle. A load metering board is disposed inside the housing. The load metering board includes multiple controllable load circuits. The load metering board is provided with a first signal terminal, which is used to adapt to the second signal terminal of the charging gun assembly. A control board is disposed inside the housing. The control board is used to monitor or control the plurality of controllable load circuits. The control board is also used to monitor or control the charging gun assembly after the first signal terminal is connected to the second signal terminal and the power line of the charging gun assembly is connected to at least one of the controllable load circuits.

2. The intelligent distribution box according to claim 1, characterized in that, The charging gun assembly is an optional accessory.

3. The intelligent distribution box according to claim 1, characterized in that, The side wall of the box is provided with an opening; The charging gun assembly includes a connected gun body and a charging cable. The gun body is located outside the housing. The charging cable includes at least one power line and at least one signal line. A portion of the charging cable passes through the opening and extends into the housing. One end of the power line is used for electrical connection with at least one controllable load circuit. One end of the signal line is provided with a second signal terminal adapted to the first signal terminal.

4. The intelligent distribution box according to claim 3, characterized in that, The charging cable includes two power lines, each of which is a live wire and a ground wire. The controllable load circuit includes a circuit breaker, the live wire is electrically connected to the circuit breaker of one of the controllable load circuits, and the ground wire is electrically connected to the grounding terminal of the intelligent distribution box.

5. The intelligent distribution box according to claim 3, characterized in that, The charging cable includes three power lines, which are a first live wire, a second live wire, and a ground wire. The controllable load circuit includes a circuit breaker, the first live wire and the second live wire are electrically connected to the circuit breakers corresponding to the two controllable load circuits respectively, and the ground wire is electrically connected to the grounding terminal of the intelligent distribution box.

6. The intelligent distribution box according to claim 3, characterized in that, The at least one signal line is used for signal exchange and charging confirmation between the control board and the charging gun assembly after the first signal terminal and the second signal terminal are connected.

7. The intelligent distribution box according to claim 6, characterized in that, The at least one signal line includes two signal lines. The corresponding load metering board is provided with two first signal terminals, and the two signal lines are respectively connected to two second signal terminals. After the two first signal terminals and the two second signal terminals are connected, one signal line is used for signal exchange between the control board and the charging gun, and the other signal line is used for charging confirmation.

8. The intelligent distribution box according to claim 1, characterized in that, The charging gun assembly is used to connect to an electric vehicle. After the gun body of the charging gun assembly is connected to the charging port of the electric vehicle, the control board is used to monitor or control the charging gun assembly to charge the electric vehicle, or to monitor or control the electric vehicle's power to be transmitted to the smart distribution box.

9. The intelligent distribution box according to claim 3, characterized in that, Also includes: A card slot is provided inside the box, and the card slot is correspondingly provided with the opening; A clamp is detachably connected to the slot, and the clamp is connected to the slot to fix the charging cable.

10. The intelligent distribution box according to claim 3 or 4, characterized in that, The controllable load circuit includes a load circuit breaker, and one end of the power line is connected to the load circuit breaker.

11. The intelligent distribution box according to claim 10, characterized in that, Also includes: An input module and the load circuit breaker are spaced apart along a first direction of the enclosure. The enclosure has an input hole on one side of the first direction for the input cable to pass through, and the input module is located near the input hole.

12. The intelligent distribution box according to claim 3, characterized in that, Also includes: A cover plate is detachably connected to the side wall, the cover plate being connected to the side wall to cover the opening.

13. The intelligent distribution box according to claim 12, characterized in that, Also includes: A residual current device (RCD) is provided on the cover plate, and the charging cable passes through the RCD.

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