A high-voltage direct-hanging charging and replacing integrated station suitable for new energy heavy trucks
Patent Information
- Application Number
- CN202522218425.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-21
AI Technical Summary
一方面，初始投资成本高昂，涉及土地、大功率电力增容及备用电池等重资产投入，给运营商带来巨大资金压力；另一方面，大功率集中换电对区域电网造成冲击，且传统整流技术会产生大量谐波污染电网
[0015] The beneficial effects of the technical solutions provided in some embodiments of this application include at least the following: by adopting a high-voltage direct-connection architecture to directly connect to the 10kV power grid, an external substation is eliminated, reducing initial construction costs and construction period such as land and power capacity expansion; the use of phase-shifting rectification technology suppresses harmonic generation from the source, reducing pollution to the power grid and improving power quality; the AC/DC and DC/DC two-stage high-efficiency power conversion modules, combined with a common DC bus design, realize the reduction of overall system losses and flexible intelligent power distribution among battery packs, improving energy utilization efficiency; key equipment is highly integrated into an integrated enclosure, which not only simplifies line connections and saves space, but also makes the entire charging and swapping station portable, flexibly adapting to project changes and improving deployment and operation flexibility.
Smart Images
Figure CN224759970U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of new energy battery swapping station technology, and in particular to a high-voltage direct-connection charging and swapping integrated station suitable for new energy heavy trucks. Background Technology
[0002] Currently, battery swapping stations for new energy heavy-duty trucks are mainly deployed in fixed-route scenarios such as ports and mining areas, including short-haul transportation within and around ports, mining areas, steel mills, and large logistics parks. These scenarios involve vehicles traveling on fixed routes, making it easy to construct battery swapping stations.
[0003] Despite its rapid development, the construction and operation of battery swapping networks face significant challenges. On the one hand, the initial investment costs are high, involving heavy asset investments such as land, large-scale power capacity expansion, and backup batteries, placing enormous financial pressure on operators. On the other hand, high-power centralized battery swapping impacts regional power grids, and traditional rectification technology generates significant harmonic pollution of the grid. Furthermore, the fixed infrastructure of traditional power stations is difficult to adapt to changing project needs, lacking flexibility and hindering the rapid popularization and efficient operation of battery swapping networks. Utility Model Content
[0004] Based on the above problems, this application provides a high-voltage direct-connection charging and swapping integrated station suitable for new energy heavy trucks. Through high-voltage direct connection and high-efficiency power conversion technology, it significantly reduces the construction cost, power grid harmonic pollution and system loss, and achieves integrated and convenient relocation.
[0005] This application provides a high-voltage direct-connection charging and swapping integrated station suitable for new energy heavy-duty trucks, comprising: a high-voltage incoming line unit, the input end of which is configured to connect to a 10kV high-voltage power grid; a phase-shifting rectifier transformer, the high-voltage input end of which is connected to the output end of the high-voltage incoming line unit; an AC / DC conversion module, the AC input end of which is connected to the low-voltage output end of the phase-shifting rectifier transformer; a DC / DC conversion module, the DC input end of which is connected to the DC output end of the AC / DC conversion module; a DC distribution unit, which is connected to the DC output end of the DC / DC conversion module; and at least one charging and swapping interface, which is connected to the DC distribution unit.
[0006] In one possible implementation, the high-voltage incoming line unit includes an incoming line cabinet, a metering cabinet, and a ring network outgoing line cabinet.
[0007] In one possible implementation, the phase-shifting rectifier transformer is a 24-pulse phase-shifting rectifier transformer with multiple phase-shifting windings on its secondary side.
[0008] In one possible implementation, the AC / DC conversion module employs active power factor correction technology.
[0009] In one possible implementation, the power semiconductor device used in the DC / DC conversion module is a silicon carbide device.
[0010] In one possible implementation, the DC / DC conversion module includes an isolated or non-isolated switching power supply topology.
[0011] In one possible implementation, the DC distribution unit adopts a common DC bus structure, and the output of the DC / DC conversion module is connected to the common DC bus to realize stepless flexible power distribution among multiple battery packs connected to the bus.
[0012] In one possible implementation, the charging and swapping interface includes at least one charging battery compartment for swapping the battery pack of the vehicle, and / or at least one off-site charging gun for directly charging the vehicle.
[0013] In one possible implementation, the high-voltage incoming line unit, phase-shifting rectifier transformer, AC / DC conversion module, DC / DC conversion module, and DC distribution unit are integrated into a single enclosure.
[0014] In one possible implementation, a transport base is provided at the bottom of the box-type housing.
[0015] The beneficial effects of the technical solutions provided in some embodiments of this application include at least the following: by adopting a high-voltage direct-connection architecture to directly connect to the 10kV power grid, an external substation is eliminated, reducing initial construction costs and construction period such as land and power capacity expansion; the use of phase-shifting rectification technology suppresses harmonic generation from the source, reducing pollution to the power grid and improving power quality; the AC / DC and DC / DC two-stage high-efficiency power conversion modules, combined with a common DC bus design, realize the reduction of overall system losses and flexible intelligent power distribution among battery packs, improving energy utilization efficiency; key equipment is highly integrated into an integrated enclosure, which not only simplifies line connections and saves space, but also makes the entire charging and swapping station portable, flexibly adapting to project changes and improving deployment and operation flexibility. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A system architecture diagram of a high-voltage direct-connection charging and swapping integrated station suitable for new energy heavy trucks is provided in the embodiments of this application; Figure 2A design dimension drawing of a phase-shifting rectifier transformer provided for an embodiment of this application; Figure 3 This is a flowchart illustrating the operation of a charging and swapping station as provided in an embodiment of this application. Detailed Implementation
[0018] To make the features and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0019] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0020] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.
[0021] As mentioned earlier, against the backdrop of promoting green transformation in the transportation sector, new energy heavy-duty trucks, especially electric heavy-duty trucks, are experiencing rapid development due to their economic and environmental advantages in fixed-route, high-frequency operation scenarios. The battery swapping model, as a key technological path to solve the problem of long charging times for heavy-duty trucks and improve operational efficiency, makes the construction of its infrastructure—battery swapping stations—particularly important. Currently, battery swapping stations are mainly concentrated in ports, mining areas, steel mills, and some core logistics trunk lines, and their construction and operation models exhibit clear regional demonstration characteristics.
[0022] However, existing technological solutions in this field face several prominent bottlenecks. First, the initial investment cost is high. Building a traditional heavy-duty truck battery swapping station is a capital investment, costing millions of yuan. This includes not only the expensive swapping equipment itself, but also land costs, especially the costs of dedicated substations and complex power capacity expansion required for high-power applications, as well as the cost of a large number of backup batteries. This places enormous financial pressure on operators and severely restricts the rapid and large-scale deployment of battery swapping networks. Second, grid access and compatibility challenges are significant. High-power centralized battery swapping can cause instantaneous load surges on the regional power grid. At the same time, traditional rectification technology generates a large number of low-order harmonics such as the 5th and 7th, which "pollute" the grid quality. This makes the project face more obstacles in the power approval process, making the process complex and time-consuming. Finally, existing battery swapping stations lack flexibility. Their infrastructure (especially the power access portion) is mostly fixed permanent buildings, which are difficult to relocate once built. When business scenarios change, the existing stations cannot be moved, resulting in sunk investments and an inability to adapt to dynamic market demands.
[0023] In view of this, this application provides a high-voltage direct-connection charging and swapping integrated station suitable for new energy heavy-duty trucks. It aims to directly connect to the 10kV medium-voltage power grid through a built-in ring main unit and a dedicated phase-shifting rectifier transformer, fundamentally eliminating the huge investment and land occupation required for building external substations, significantly reducing infrastructure costs and approval complexity. The application of phase-shifting rectification technology, through multi-pulse rectification and phase cancellation principles, effectively suppresses the harmonic content of the input current at the source, greatly reducing "pollution" to the power grid and making it easier to pass grid approval. Furthermore, through high-efficiency AC / DC and DC / DC two-stage power conversion modules, efficient, stable, and wide-range adjustable power output is achieved, improving the overall energy efficiency of the station. Finally, all key electrical equipment is highly integrated into a movable box-type enclosure, forming a complete and standardized "integrated" product, allowing it to be flexibly deployed and relocated as needed for projects, just like standard equipment.
[0024] Please see Figure 1 , Figure 1 This application provides a system architecture diagram for a high-voltage direct-connection charging and swapping station suitable for new energy heavy trucks.
[0025] like Figure 1As shown, the integrated charging and swapping station includes a high-voltage incoming line unit 110, a phase-shifting rectifier transformer 120, an AC / DC conversion module 130, a DC / DC conversion module 140, a DC distribution unit 150, and at least one charging and swapping interface 160. The input terminal of the high-voltage incoming line unit 110 is configured to connect to a 10kV high-voltage power grid; the high-voltage input terminal of the phase-shifting rectifier transformer 120 is connected to the output terminal of the high-voltage incoming line unit 110; the AC input terminal of the AC / DC conversion module 130 is connected to the low-voltage output terminal of the phase-shifting rectifier transformer 120; the DC input terminal of the DC / DC conversion module 140 is connected to the DC output terminal of the AC / DC conversion module 130; the DC distribution unit 150 is connected to the DC output terminal of the DC / DC conversion module 140; and the charging and swapping interface 150 is connected to the DC distribution unit 140.
[0026] Specifically, the high-voltage incoming line unit 110 includes an incoming line cabinet, a metering cabinet, and a ring network outgoing line cabinet. 10KV high-voltage electricity enters from the power grid and reaches the internal transformer of the charging and swapping integrated station through the metering cabinet and outgoing line cabinet. The incoming line cabinet, metering cabinet, and ring network cabinet together form the ring network cabinet, which measures the electricity used by the equipment to obtain the total electricity consumption of the equipment.
[0027] Please see Figure 2 , Figure 2This application provides a design dimension drawing of a phase-shifting rectifier transformer 120, which can convert one 10KV source into 24 660V sources and one 380V source. It should be noted that ordinary rectifiers generate a large number of characteristic harmonics such as the 5th, 7th, 11th, and 13th harmonics, which are injected into the power grid, causing "pollution." In one possible implementation, the phase-shifting rectifier transformer is a 24-pulse phase-shifting rectifier transformer with multiple phase-shifting windings on its secondary side. Through its unique winding design, the secondary side is divided into multiple pulse groups, which can be 12 pulses or 24 pulses, with a fixed phase difference between each group. These phase-staggered waveforms are superimposed on the primary side of the transformer (power grid side), and the low-order harmonics cancel each other out. Phase-shifting rectifier transformer technology optimizes the power conversion process by precisely controlling the conduction angle of power semiconductor devices (such as thyristors), effectively reducing switching losses and conduction losses, thereby significantly improving the overall energy efficiency. Traditional rectifier circuits generate a large number of low-order harmonics, polluting the power grid. Phase-shifting rectification technology, through multi-pulse rectification and a special winding design, ensures that the harmonic currents generated by each rectifier unit are phase-shifted and cancel each other out at the input, significantly reducing the harmonic content of the input current. It also boasts strong overload capacity, enabling long-term safe operation under rated load and withstanding certain overvoltage conditions. Employing a built-in ring main unit and transformer structure, it can be directly connected to the 10kV power grid, greatly reducing infrastructure pressure and costs, and minimizing wiring work. Furthermore, long-distance power transmission uses only high-voltage electricity, reducing power loss by 5%-8%. Because of the built-in ring main unit and transformer, the location can be relocated as needed for project changes without incurring excessive losses.
[0028] The 660V voltage is converted into DC by AC / DC conversion module 130 and then into the desired DC voltage by DC / DC conversion module 140. The output voltage is adjustable within the range of DC 200-800V / 800-1200V. The DC voltage obtained from AC-DC conversion typically has ripple and is not stable enough. The subsequent DC-DC converter acts like a sophisticated voltage regulator, using high-frequency switching and feedback control to output an extremely stable and pure DC voltage. Although two conversions are performed, each stage is highly efficient. In one possible implementation, the AC-DC stage uses active power factor correction (PFC) technology, which not only reduces harmonic pollution to the power grid but also improves energy utilization. The DC-DC stage uses switching regulation technology, where power devices typically operate in a "fully on" or "fully off" state, resulting in very low losses and an efficiency of 85%-95%. The product of these two highly efficient conversion stages makes the overall efficiency far higher than traditional linear regulation schemes. This two-stage structure is a "decoupled" design. The AC-DC section can focus on converting grid AC power into an intermediate DC voltage. The subsequent DC-DC module can be designed independently, flexibly implementing buck, boost, or even buck-boost conversion according to the needs of the final device, thus adapting to battery packs of different voltage levels. This makes it easier to apply the same charging system design to products in different regions and of different models. Distributing the overall task to two modules helps to distribute heat, facilitating thermal management and heat dissipation design, and avoiding heat concentration. Simultaneously, designing each module to operate optimally helps control electromagnetic interference (EMI), improving system stability and reliability. In one possible implementation, the DC / DC conversion module 140 uses silicon carbide (SiC) power semiconductor devices to reduce power conversion losses. The DC / DC conversion module 140 also includes isolated or non-isolated switching power supply topologies. When the DC / DC conversion module 140 uses an isolated switching power supply topology, topologies such as a full-bridge LLC resonant converter, a phase-shifted full-bridge converter, or a forward converter can be selected. Taking a full-bridge LLC resonant converter as an example, it includes a full-bridge switching network, an LLC resonant cavity (composed of a resonant inductor Lr, a resonant capacitor Cr, and a magnetizing inductor Lm), a high-frequency transformer, and a synchronous rectifier circuit. This topology achieves stable output voltage control by adjusting the switching frequency, enabling soft switching over a wide load range, significantly reducing switching losses, and achieving an efficiency of over 95%. The high-frequency transformer provides electrical isolation between the input and output, enhancing system safety. When the DC / DC conversion module 140 adopts a non-isolated switching power supply topology, topologies such as Buck converters, Boost converters, or Buck-Boost buck-boost converters can be selected.Taking a bidirectional Buck-Boost converter as an example, it mainly consists of power switching transistors (such as SiC MOSFETs), filter inductors, and output capacitors. This topology precisely adjusts the output voltage by controlling the duty cycle of the switching transistors, resulting in a simple structure, high power density, and low cost. Since no high-frequency transformer is required, the system size is smaller, and efficiency is further improved. Therefore, this application does not specifically limit the switching power supply topology circuitry used in the DC / DC conversion module 140.
[0029] The core structure of the DC distribution unit 150 is one or more common DC buses, serving as a crucial hub connecting the AC / DC conversion module, the DC / DC conversion module, and the charging / swapping interface. Its core function is to receive stable DC power from the DC / DC conversion module 140 and flexibly distribute and manage it. The DC distribution unit 150 also includes a power control module. This power control module communicates with the upper-level system controller via a communication bus (such as a CAN bus) and receives feedback signals from various sampling circuits. In one possible implementation, the outputs of the AC / DC conversion module and the DC / DC conversion module are connected to the common DC bus, enabling stepless flexible power distribution among multiple battery packs connected to this bus. This "stepless flexible power distribution" is achieved by the power control module dynamically adjusting the distribution ratio of the total output power among the various branches based on system commands or real-time load demands, by controlling the switching states of the DC contactors on each branch and sending power commands to the DC / DC conversion module. Because all branches are connected in parallel to a common DC bus, the voltage is clamped to a stable value, and power distribution is essentially achieved by controlling the amount of current flowing into each branch. This architecture allows power to be transferred smoothly and seamlessly between battery packs, achieving true "flexible" distribution.
[0030] The charging / swapping interface 160 includes two main types: a battery compartment charging interface for battery swapping mode and an off-site charging gun interface for direct charging mode. The battery compartment charging interface is installed inside the charging battery compartment at the station and is used to charge the spare battery pack. The off-site charging gun interface is connected to the corresponding branch of the DC distribution unit via a charging cable and is used to directly charge new energy heavy trucks parked in designated parking spaces.
[0031] In one possible implementation, the high-voltage incoming line unit 110, the phase-shifting rectifier transformer 120, the AC / DC conversion module 130, the DC / DC conversion module 140, and the DC distribution unit 150 are integrated into a single enclosure, forming a complete, standardized prefabricated charging and swapping station product. This enclosure is a metal frame structure, for example, welded from structural steel, and covered with protective panels, providing wind, rain, and dust protection. The interior of the enclosure is divided into different functional compartments by internal partitions to achieve physical isolation and safety protection. A typical layout includes: a high-voltage incoming line compartment: located on one side of the enclosure, used to house the high-voltage incoming line cabinet. This compartment has a high-voltage cable inlet for introducing 10kV cables, ensuring sufficient safety distance and insulation strength. A transformer and power conversion compartment: located in the middle of the enclosure, used to house the phase-shifting rectifier transformer and the power conversion unit composed of AC / DC and DC / DC modules. This compartment is the main heat-generating area. DC Distribution and Control Cabinet: Located on the other side of the enclosure, this compartment houses the DC distribution unit and its power control module, as well as the overall control system of the station. This compartment requires a high level of environmental control, maintaining cleanliness and a suitable temperature. The main electrical connections for each functional unit are completed inside the enclosure, significantly reducing on-site wiring work. The output of the high-voltage incoming cabinet is connected to the high-voltage input of the phase-shifting rectifier transformer via an internal high-voltage busbar. The low-voltage output of the phase-shifting rectifier transformer is connected to the input of the AC / DC module via a low-voltage busbar or a large-section cable. The output of the DC / DC module is also connected to the common DC busbar of the DC distribution unit via a DC busbar. To ensure reliable operation of the integrated station, the enclosure also integrates necessary auxiliary systems: Cooling System: This includes forced-air cooling devices (such as industrial air conditioners and fans) installed in the transformer and power conversion compartments, as well as radiators attached to the power modules, to promptly remove heat generated by system losses. Fire Protection System: The compartment is equipped with smoke sensors and automatic fire extinguishing devices. Lighting and Maintenance System: The enclosure is equipped with lighting and access doors and maintenance doors for easy personnel entry.
[0032] In one possible implementation, to achieve the effect of "easy relocation," the bottom frame of the box-type shell is equipped with a standardized transport base, such as a container twist-lock hole or a skid structure. This allows the entire integrated station to be transported as a whole using standard hoisting equipment or flatbed trucks. Relocation does not require disassembling the internal equipment; simply disconnect the external power grid and charging interface, and reconnect them upon arrival at the new site. This greatly improves deployment flexibility and equipment utilization. Through the above integrated design, this application transforms the traditional "engineering project" into a mass-producible "standardized product," significantly reducing civil engineering, on-site installation, and commissioning costs, shortening the construction cycle, and realizing the core value—easy relocation.
[0033] This application provides a high-voltage direct-connection charging and swapping integrated station suitable for new energy heavy-duty trucks. Through its built-in ring main unit and dedicated phase-shifting rectifier transformer, it can be directly connected to a 10kV medium-voltage power grid, fundamentally eliminating the huge investment and land occupation required for building external substations, significantly reducing infrastructure costs and approval complexity. The application of phase-shifting rectification technology, through multi-pulse rectification and phase cancellation principles, effectively suppresses the harmonic content of the input current at the source, greatly reducing "pollution" to the power grid and making it easier to pass grid approval. Furthermore, through high-efficiency AC / DC and DC / DC two-stage power conversion modules, efficient, stable, and wide-range adjustable power output is achieved, improving the overall energy efficiency of the station. Finally, all key electrical equipment is highly integrated into a movable box-type enclosure, forming a complete and standardized "integrated" product, allowing it to be flexibly deployed and relocated as needed for projects, just like standard equipment.
[0034] Please see Figure 3 , Figure 3 A flowchart of a charging and swapping station provided in this application embodiment is shown below. Figure 3As shown, 10kV high-voltage AC power is introduced from the municipal power grid and first connected to the integrated high-voltage incoming unit (i.e., ring main unit, including incoming cabinet, metering cabinet, and outgoing cabinet) within the substation. The incoming cabinet completes the connection and isolation protection, the metering cabinet accurately measures the total power consumption, and the outgoing cabinet distributes the 10kV power to the next level. The 10kV AC power from the ring main unit is transmitted to the primary side (high-voltage side) of the phase-shifting rectifier transformer. This transformer converts it into multiple (e.g., 24) phase-staggered low-voltage AC power (e.g., AC 660V). During this process, the transformer, through its unique phase-shifting winding design, enables the low-order characteristic harmonics (e.g., 5th and 7th harmonics) generated by each secondary winding to cancel each other out on the primary side of the grid, thereby significantly reducing the harmonic content injected into the grid from the source and improving power quality. The low-voltage AC power (AC 660V) output from the phase-shifting rectifier transformer is sent to the AC / DC conversion module. This module employs a three-phase rectifier circuit with source power factor correction (PFC) technology to convert AC power into a stable intermediate DC voltage. This step not only completes the AC / DC conversion but also further improves the power factor, reducing harmonic impact on the upstream power grid. The intermediate DC power output from the AC / DC module is fed into the DC / DC conversion module. This module acts as a precise "voltage regulator," boosting, bucking, or regulating the voltage based on the charging requirements of the downstream battery pack (e.g., voltage requirements ranging from DC 200V to 1200V) using high-frequency switching technology (such as silicon carbide devices), outputting a DC power with minimal ripple and extremely high precision. The entire process uses closed-loop control to ensure the stability of the output voltage and current. The precisely regulated DC power is then delivered to the core of the DC distribution unit—the common DC bus. This bus serves as a common DC power source. The power control module, based on system instructions (such as prioritizing charging a specific battery compartment or responding to external charging requests), controls the on / off switching of the branches connected to the bus, achieving intelligent and flexible power distribution to different loads. The final power output can be either a battery swapping mode or a direct charging mode. Power is distributed to the designated charging battery compartment via a DC distribution unit. The high-voltage charging contacts inside the compartment connect to the backup battery pack, and through communication with the Battery Management System (BMS), a safe and rapid charging process begins, providing the battery swapping robot with a fully charged battery pack. Alternatively, a direct charging mode can be used. Power is distributed to an external charging gun via the DC distribution unit. The user inserts the charging gun into the heavy-duty truck's charging socket, and after the vehicle's BMS and the charging system communicate, DC power directly charges the onboard battery.
[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A high-voltage direct-hanging charging and replacing integrated station suitable for new energy heavy trucks, characterized in that, include: A high-voltage incoming line unit, wherein the input terminal of the high-voltage incoming line unit is configured to connect to a 10kV high-voltage power grid; A phase-shifting rectifier transformer, wherein the high-voltage input terminal of the phase-shifting rectifier transformer is connected to the output terminal of the high-voltage input unit; AC / DC conversion module, wherein the AC input terminal of the AC / DC conversion module is connected to the low-voltage output terminal of the phase-shifting rectifier transformer; A DC / DC converter module, wherein the DC input terminal of the DC / DC converter module is connected to the DC output terminal of the AC / DC converter module; A DC distribution unit, which is connected to the DC output terminal of the DC / DC conversion module; At least one charging / swapping interface is provided, which is connected to the DC distribution unit.
2. The refillable station of claim 1, wherein, The high-voltage incoming line unit includes an incoming line cabinet, a metering cabinet, and a ring network outgoing line cabinet.
3. The refillable station of claim 1, wherein, The phase-shifting rectifier transformer is a 24-pulse phase-shifting rectifier transformer with multiple phase-shifting windings on its secondary side.
4. The charging and swapping integrated station as described in claim 1, characterized in that, The AC / DC conversion module employs active power factor correction technology.
5. The refillable station of claim 1 or 4, wherein The power semiconductor device used in the DC / DC conversion module is a silicon carbide device.
6. The refillable station of claim 1 or 4, wherein The DC / DC conversion module includes isolated or non-isolated switching power supply topologies.
7. The refillable station of claim 1, wherein, The DC distribution unit adopts a common DC bus structure, and the output terminal of the DC / DC conversion module is connected to the common DC bus to realize stepless flexible power distribution among multiple battery packs connected to the bus.
8. The charging and swapping station as described in claim 1, characterized in that, The charging and swapping interface includes at least one charging battery compartment for swapping the battery pack of the vehicle, and / or at least one off-site charging gun for directly charging the vehicle.
9. The refillable station of claim 1, wherein, The high-voltage incoming line unit, phase-shifting rectifier transformer, AC / DC conversion module, DC / DC conversion module and DC distribution unit are integrated into a box-type housing.
10. The refillable station of claim 9, wherein, The bottom of the box-type outer shell is equipped with a transport base.