A liquid-cooled power supply cabinet, charging pile and charging system

Abstract

This utility model discloses a liquid-cooled power supply cabinet, charging pile, and charging system. By introducing a mounting plate with multi-specification installation adaptability into the AC power distribution unit, the mounting plate forms multiple sets of pre-set mounting holes with varying hole spacing. This allows for rapid and compatible installation of AC power distribution switches of different sizes and types by replacing the mounting plate or utilizing the multiple sets of pre-set mounting holes, thereby improving compatibility with different specifications of power distribution switches and further enhancing the convenience of maintenance and replacement operations. Simultaneously, the power distribution PDU is divided into two layered, detachable units for easy independent replacement, reducing maintenance costs and downtime. Furthermore, the heat exchange chamber and power distribution chamber are completely sealed and isolated, effectively improving the system's heat dissipation efficiency and maintainability, significantly enhancing the overall reliability and lifecycle management capabilities.

Description

Technical Field

[0001] This utility model relates to the field of charging technology, and in particular to a liquid-cooled power supply cabinet, a charging pile and a charging system. Background Technology

[0002] Liquid-cooled power supply cabinets are key components of high-power charging systems, providing both power conversion and liquid cooling. Most liquid-cooled power supply cabinets in related technologies typically include an AC power distribution unit, a liquid-cooled power module, a power distribution unit, an intelligent control and protection system, and a heat exchange system. During charging, the intelligent control and protection system controls the AC contactor to engage, converting the AC power into DC power via the liquid-cooled power module, and then driving the PDU (Power Distribution Unit) to output the DC power required by the charging equipment.

[0003] In liquid-cooled power cabinets, systems typically employ a top-to-bottom partitioned layout. AC distribution units and PDU modules often have customized structures due to different manufacturers, models, and diverse electrical requirements, resulting in a lack of compatibility with different specifications of power distribution switches. This further complicates maintenance and replacement operations. Meanwhile, although the heat exchange structure uses coolant and fans for heat dissipation, its high internal integration limits its versatility and scalability, impacting system adaptability and operational efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a liquid-cooled power supply cabinet, a charging pile, and a charging system to at least solve the technical problems mentioned in the related technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A first aspect of this utility model provides a liquid-cooled power supply cabinet, the liquid-cooled power supply cabinet comprising:

[0007] The rack itself;

[0008] An AC power distribution unit is installed on the cabinet body and is used to receive AC power from the power grid;

[0009] A liquid-cooled power module is mounted on the cabinet body and connected to the AC power distribution unit to convert the AC power into DC power.

[0010] The intelligent control and protection system includes a control unit and a monitoring unit. The control unit is used to control the operation of the AC power distribution unit and the liquid-cooled power module, and the monitoring unit is used to monitor the working status of each component of the liquid-cooled power cabinet.

[0011] The AC power distribution unit includes a mounting plate and a circuit breaker mounted on the mounting plate. The mounting plate has multiple sets of pre-set mounting holes, and the spacing between the holes in different sets of pre-set mounting holes is different. Each set of pre-set mounting holes is used to install a circuit breaker of a corresponding size and specification.

[0012] A second aspect of this utility model also provides a charging pile, including a charging pile body and a liquid-cooled power supply cabinet as described in the first aspect; the DC output port in the charging pile body is used to transmit the DC power output by the liquid-cooled power supply cabinet to the device to be charged through a charging terminal device.

[0013] A third aspect of this utility model also provides a charging system, characterized in that it includes a charging system body and a liquid-cooled power supply cabinet as described in the first aspect; the charging system body further includes a communication interface, which is used for data interaction with the device to be charged and the intelligent operation management platform.

[0014] This utility model discloses a liquid-cooled power supply cabinet, charging pile, and charging system. By introducing a mounting plate with multi-specification installation adaptability into the AC power distribution unit, this mounting plate forms multiple sets of pre-set mounting holes with varying hole spacing. This allows for rapid and compatible installation of AC power distribution switches of different sizes and types by replacing the mounting plate or utilizing the multiple sets of pre-set mounting holes, thereby improving compatibility with different specifications of power distribution switches and further enhancing the convenience of maintenance and replacement operations. Simultaneously, the power distribution PDU is divided into two layered, detachable units for easy independent replacement, reducing maintenance costs and downtime. Furthermore, the heat exchange chamber and power distribution chamber are completely sealed and isolated, effectively improving the system's heat dissipation efficiency and maintainability, significantly enhancing the overall reliability and lifecycle management capabilities. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A three-dimensional schematic diagram of a liquid-cooled power supply cabinet in a front-view state, provided for an embodiment of this application;

[0017] Figure 2 A three-dimensional schematic diagram of a liquid-cooled power supply cabinet in a rear-view state, provided for an embodiment of this application;

[0018] Figure 3This is a structural breakdown diagram of the AC power distribution unit in the embodiments of this application;

[0019] Figure 4 Electrical schematic diagram of the liquid-cooled power supply cabinet provided in the embodiments of this application;

[0020] Figure 5 A three-dimensional schematic diagram of a liquid-cooled power supply cabinet provided in an embodiment of this application;

[0021] Figure 6 A three-dimensional schematic diagram of a liquid-cooled power supply cabinet provided in an embodiment of this application;

[0022] Figure 7 This is a schematic diagram showing the structural disassembly of the liquid-cooled power supply cabinet after separating the heat exchange compartment and the power distribution compartment, as provided in the embodiments of this application.

[0023] Reference numerals: Cabinet body 10, Cabinet top cover 11, Base 12, AC power distribution unit 20, Liquid cooling power module 30, Power distribution unit 40, Monitoring unit 50, Auxiliary power supply unit 60, Heat exchange chamber 70, Power distribution chamber 80, Enclosed partition 90, Control unit 100, Water tank 111, Coolant inlet pipe 112, Coolant outlet pipe 113, Coolant return pipe 114, Water pump unit 115, AC input interface 120, AC contactor 140, DC output interface 130, Mounting plate 201, Circuit breaker 202, 203; Positive PDU unit 401, Negative PDU unit 402, Screw 403, Fan module 701, Heat dissipation fins 702, Pre-set mounting holes 2011, 2012. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that related terms such as "first" and "second" can be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another. For example, without departing from the scope of this utility model, the first component can be referred to as the second component, and the second component can similarly be referred to as the first component. The term "and / or" refers to any one or more combinations of related and descriptive terms.

[0026] The relevant technologies are explained below:

[0027] Currently, charging systems are developing towards liquid-cooled supercharging technology. As the core equipment of liquid-cooled supercharging technology, the liquid-cooled power cabinet has the characteristic of supporting higher charging power. Its core function is to cool the heat generated during the charging process through a liquid cooling circulation system, and to realize the efficient conversion of AC power from the grid to DC power from the power battery using power electronics technology, and to complete the safety management of the charging process based on intelligent control strategies.

[0028] The internal system architecture of the liquid-cooled power cabinet mainly consists of an AC power distribution unit, a liquid-cooled power module, an intelligent control and protection system, an auxiliary power supply unit, a heat exchange unit, and a data interaction system. The AC power distribution unit provides AC380V / AC220V power to the entire system, while the auxiliary power supply unit provides operating power to the control circuit, human-machine interface, and water pump. The liquid-cooled power module converts the AC380V AC power from the AC distribution unit into DC power output. Simultaneously, the heat exchange unit drives the coolant flow through the water pump, carrying away the heat generated during power conversion by the liquid-cooled power module back to the heat sink fins. Then, forced convection cooling by the fan unit allows heat exchange between the air and the coolant in the heat sink fins, ultimately carrying the heat from the coolant into the surrounding atmosphere, thereby improving charging efficiency and speed. When charging is required, the system exchanges battery voltage, current, temperature, and other parameter information in real time with the vehicle-side BMS (Battery Management System) via the system's CAN (Controller Area Network) bus. Data can also be uploaded to the intelligent operation management platform via Ethernet or wireless communication. At the same time, the system's output parameters within the power cabinet are adjusted according to the vehicle's dynamic needs, achieving precise control of different stages such as constant current charging and constant voltage charging.

[0029] The molded case circuit breaker in the AC power distribution unit of the liquid-cooled power cabinet is connected to the AC 380V AC power grid through the AC input port. When there is a charging demand, the internal control unit controls 10 sets of AC contactors to operate, so that the AC current flows through the AC contactors, thereby controlling the AC power supply of the liquid-cooled power module. At the same time, the control unit controls the DC contactors in the power distribution PDU to operate to output DC power.

[0030] From an overall architectural perspective, the liquid-cooled power cabinet adopts a vertical layout for the heat exchange chamber and the AC / DC power distribution chamber. From top to bottom on the front of the cabinet, the components are arranged as follows: heat exchange unit, control unit and monitoring unit, auxiliary power supply section, 10 sets of liquid-cooled power modules in the middle, and AC power distribution unit on one side at the bottom, which adopts a customized assembly method; on the other side is an integrated power distribution PDU unit, whose internal DC contactor is mounted on a fixed sheet metal part; 10 sets of AC contactors are installed on the top of the back of the cabinet, with AC input port on one side and DC output port on the other side at the bottom.

[0031] The AC / DC power distribution compartment uses fan cooling to dissipate heat from localized heat-generating components throughout the compartment, where it then exchanges heat with the outside environment through the sheet metal casing. The heat exchange compartment uses coolant heat exchange and a top-mounted fan for cooling. Each liquid-cooled power module has an inlet and outlet pipe. Water pump pressure drives coolant, which is at a lower temperature, into the liquid-cooled power module through the inlet pipe (coolant has the ability to quickly absorb heat). The coolant carries the heat out through the outlet pipe, where it is quickly absorbed by the heat sink fins. The fan then cools the fins, and the cooled coolant returns to the water pump for further circulation.

[0032] In summary, most liquid-cooled power cabinet systems in related technologies have relatively fixed architectures. Due to differences in the structural dimensions of different AC power distribution switches, customized assembly methods are used. Replacing different AC power distribution switches may require adjustments to the internal component layout, necessitating a redesign of the cabinet structure. During operation, improper operation or pressing the emergency stop button due to non-objective reasons can sometimes cause the DC contactor contacts in the power distribution PDU unit to stick, requiring replacement of the damaged DC relay. In such cases, due to the integrated design of the power distribution PDU unit, partial DC contactor damage necessitates replacing the entire PDU unit, thus affecting equipment operation. Over time, twigs, leaves, and dust can accumulate on the fins, blocking the heat exchange chamber's cooling channels. This prevents the cooling fans from effectively reducing the coolant temperature within the fins, thereby reducing the efficient output of the liquid-cooled power module.

[0033] To address the technical issues in related technologies, such as the lack of convenience in replacing AC power distribution switches, the difficulty in maintaining damaged DC contactors, and the unstable heat exchange effect, please refer to the following in sequence. Figures 1 to 3 This application provides a liquid-cooled power supply cabinet.

[0034] The liquid-cooled power supply cabinet includes at least the cabinet body 10, the AC power distribution unit 20, the liquid-cooled power module 30, and the control unit 100. The components are described below:

[0035] The cabinet body 10 is a structural frame with internal installation space for installing and accommodating various functional unit components within the cabinet. The cabinet body 10 also includes a top cover 11 and a base 12. The top cover 11 is removable for easy equipment maintenance, while the adjustable support feet of the base 12 ensure the cabinet can adapt to different installation environments.

[0036] The AC power distribution unit 20 is located in a designated power distribution area (e.g., a power distribution compartment) within the cabinet body 10. It is used to receive AC power from the power grid through the AC input interface 120 (an AC input interface for receiving AC380V), and to receive AC power transmitted from the AC power distribution unit 20 through the AC contactor 140, and to provide working power to the liquid-cooled power module 30.

[0037] The liquid-cooled power module 30 is also located in a designated power distribution area (e.g., power distribution compartment) of the cabinet body 10 and is cable-connected to the AC contactor 140 to convert the received AC power into DC power output.

[0038] The intelligent control and protection system includes a control unit 100 and a monitoring unit 50. The control unit 100 is used to control the operation of the AC power distribution unit and the liquid-cooled power module, while the monitoring unit 50 is used to monitor the working status of each component of the liquid-cooled power cabinet in real time and provide data acquisition, fault detection and alarm functions.

[0039] The AC power distribution unit 20 includes a mounting plate 201 and a circuit breaker 202 or 203 mounted on the mounting plate 201 for connecting or disconnecting the AC power supply.

[0040] The mounting plate 201 has multiple sets of pre-set mounting holes 2011 and 2012, with different hole spacings in different sets to ensure compatibility with circuit breakers of different specifications (i.e., to accommodate circuit breakers of corresponding sizes). Specifically, one set of pre-set mounting holes 2011, with shorter hole spacing, is adapted to smaller circuit breakers (630A) 202, while another set of pre-set mounting holes 2012, with longer hole spacing, is adapted to larger circuit breakers (800A) 203. This allows for flexible replacement of circuit breakers and improves the system's compatibility with circuit breakers of different sizes.

[0041] It should be understood that pre-designed mounting holes refer to the pre-designed and drilled positions on the mounting plate 201, specifically used for installing and securing various components in the equipment, especially circuit breakers. The size and position of these holes are carefully designed so that when multiple sets of pre-designed mounting holes with different spacings are formed on a single mounting plate 201, it can accommodate circuit breakers of different specifications and sizes. This allows the liquid-cooled power supply cabinet to adapt to circuit breakers from different manufacturers and models, improving system compatibility and flexibility.

[0042] As can be seen, the liquid-cooled power supply cabinet of this application introduces a mounting plate with multi-specification installation adaptability into the AC power distribution unit. The mounting plate has multiple sets of pre-set mounting holes with different hole spacings in different sets of pre-set mounting holes. This allows AC power distribution switches of different sizes and types to be quickly and compatiblely installed by replacing the mounting plate or using multiple sets of pre-set mounting holes, thereby improving the compatibility with power distribution switches of different specifications and further improving the convenience of maintenance and replacement operations.

[0043] It should be noted that the liquid-cooled power supply cabinet provided in this application embodiment also includes an auxiliary power supply unit 60, which is used to provide a stable power supply for the control system, monitoring module, fans and other auxiliary electrical components in the liquid-cooled power supply cabinet.

[0044] In an optional embodiment of this application, the cabinet body is provided with an installation connection part (not shown in the figure).

[0045] Specifically, the mounting connection unit is detachably connected to mounting plates of different sizes via standardized interfaces. The pre-set mounting holes on these plates have different spacing. This allows for adaptation by replacing the mounting plate with one of the corresponding size for circuit breakers. Furthermore, the entire replacement process requires no modification to the cabinet structure, enabling rapid replacement and maintenance. This simplifies the operation process, improves system compatibility and scalability, and enhances the applicability and maintenance efficiency of the liquid-cooled power supply cabinet in high-power applications.

[0046] Please continue reading. Figure 1 and Figure 2 The liquid-cooled power supply cabinet 10 also includes a power distribution unit 40.

[0047] Specifically, the power distribution unit 40 connects to the cabinet body via a standardized interface and outputs DC power through the DC output interface 130 according to different system requirements. In practice, it receives DC power from the liquid-cooled power module 30 and distributes the DC power to different devices or charging interfaces through multiple output ports.

[0048] Please see Figure 4 and Figure 5 The power distribution unit includes multiple PDU units arranged in layers (e.g., positive PDU unit 401 and negative PDU unit 402), and the multiple PDU units can be detachably fixed to the cabinet body.

[0049] Specifically, the positive PDU unit 401 is responsible for the positive portion of the DC output, and the negative PDU unit 402 is responsible for the negative portion of the DC output. They are arranged in a hierarchical manner on the cabinet body, facilitating the distribution and management of different types of current. Furthermore, each PDU unit connects to the cabinet body via a standardized interface and is detachably mounted to the cabinet body using screws 403, pins, and other fixing devices. This allows for quick removal or replacement of PDU units as needed without affecting other PDU units or other parts of the system.

[0050] The positive PDU unit 401 and the negative PDU unit 402 are each equipped with contactors to achieve power distribution control. For example, when there is a charging demand, the module output circuit DC+ and the module output circuit DC- are connected to the positive PDU unit 401 and the negative PDU unit 402 respectively. By controlling the on / off state of the contactor group in the PDU unit, the power distribution control function is achieved.

[0051] Please see Figure 6 and Figure 7 The liquid-cooled power cabinet also includes liquid-cooled heat exchange components (111, 112, 113, 114, 115, 702).

[0052] Specifically, the liquid-cooled heat exchange component is connected to the liquid-cooled pipeline of the heat exchange area of ​​the liquid-cooled power module. The flow of coolant is driven by a water pump, so that heat is exchanged in the heat exchange area to discharge and remove the heat generated by the liquid-cooled power module during operation.

[0053] In an optional embodiment of this application, the cabinet body has an independent heat exchange chamber 70 and a power distribution chamber 80.

[0054] The heat exchange chamber 70 houses the heat dissipation fins 702 and the fan module 701. The heat dissipation fins 702 are connected to the liquid cooling pipes of the liquid-cooled heat exchange assembly. They work in conjunction with the fan module 701 to exchange and dissipate heat from the liquid-cooled power module 30, and the heat is carried away by the coolant system. The heat dissipation fins 702 are typically made of a metal material with high thermal conductivity, such as aluminum or copper, to ensure good heat transfer. Generally, the heat dissipation fins 702 can exchange heat with the coolant, working with the fan module 701 to dissipate the heat generated by the liquid-cooled power module to the outside.

[0055] The power distribution compartment 80 can house functional components such as the AC power distribution unit 20, liquid-cooled power module 30, power distribution unit 40, monitoring unit 50, control unit 100, and AC contactor 140.

[0056] The heat exchange chamber 70 and the power distribution chamber 80 are separated by a sealed partition 90. This partition 90 serves two purposes: firstly, it prevents heat cross-interference, effectively blocking heat transfer from the heat exchange chamber to the power distribution chamber during heat dissipation, thus avoiding performance issues caused by overheating of electrical components; secondly, it creates an independent compartment between the two chambers, improving the protection level of the power distribution chamber and protecting electrical components. Specifically, the partition 90 also prevents direct contact between leaking coolant in the heat exchange chamber 70 and the electrical components in the power distribution chamber 80, reducing the impact of moisture or overheating on the electrical components.

[0057] It should be noted that the liquid-cooled heat exchange assembly includes at least a coolant inlet pipe 112, a coolant outlet pipe 113, a coolant return pipe 114, a water tank 111, and a water pump unit 115.

[0058] First, the coolant inlet pipe 112 is connected to the inlet of the heat exchange area of ​​the liquid-cooled power module 30. The coolant inlet pipe 112, via the water pump unit 115, drives the coolant in the heat exchange fins 702 to the heat exchange area of ​​the liquid-cooled power module 30 to remove heat. Second, the coolant that has undergone heat exchange in the heat exchange area is transferred through the coolant outlet pipe 113 to the heat exchange channels in the heat exchange fins 702 within the heat exchange chamber 70, thereby transferring heat to the heat exchange fins 702. Finally, through the connection of the coolant return pipe 114, the coolant in the water tank 111 and the heat exchange fins 702 mutually replenish and return, achieving pressure balance in the liquid system and ultimately forming a coolant circulation loop in the liquid system.

[0059] This application also provides a charging pile, including a charging pile body and a liquid-cooled power supply cabinet as described in the above embodiments; the DC output port in the charging pile body is used to transmit the DC power output from the liquid-cooled power supply cabinet to the device to be charged through the charging terminal equipment.

[0060] This application also provides a charging system, including a charging system body and a liquid-cooled power supply cabinet as described in the above embodiments; the charging system body also includes a communication interface for data interaction with the device to be charged and the intelligent operation management platform.

[0061] The liquid-cooled power supply cabinet, charging pile, and charging system of this application introduce a mounting plate with multi-specification installation adaptability into the AC power distribution unit. This mounting plate has multiple sets of pre-set mounting holes with varying hole spacing in different sets. This allows for rapid and compatible installation of AC power distribution switches of different sizes and types by replacing the mounting plate or utilizing the multiple sets of pre-set mounting holes, thus improving compatibility with different specifications of power distribution switches and further enhancing the convenience of maintenance and replacement operations. Simultaneously, the power distribution PDU is divided into two layered, detachable units for easy independent replacement, reducing maintenance costs and downtime. Furthermore, the heat exchange chamber and power distribution chamber are completely sealed and isolated, effectively improving the system's heat dissipation efficiency and maintainability, significantly enhancing the overall reliability and lifecycle management capabilities.

[0062] In short, the embodiments of this application, through designs such as independent heat exchange chambers, replaceable components, layered PDU layout, and quick replacement, significantly reduce the total life cycle cost while ensuring high power density and reliability.

[0063] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A liquid-cooled power cabinet, characterized by The liquid-cooled power supply cabinet includes: The rack itself; An AC power distribution unit is installed on the cabinet body and is used to receive AC power from the power grid; A liquid-cooled power module is mounted on the cabinet body and connected to the AC power distribution unit to convert the AC power into DC power. The intelligent control and protection system includes a control unit and a monitoring unit. The control unit is used to control the operation of the AC power distribution unit and the liquid-cooled power module, and the monitoring unit is used to monitor the working status of each component of the liquid-cooled power cabinet. The AC power distribution unit includes a mounting plate and a circuit breaker mounted on the mounting plate. The mounting plate has multiple sets of pre-set mounting holes, and the spacing between the holes in different sets of pre-set mounting holes is different. Each set of pre-set mounting holes is used to install a circuit breaker of a corresponding size and specification.

2. The liquid-cooled power supply cabinet as described in claim 1, characterized in that, The cabinet body is equipped with a mounting connection part; The mounting connection part is used for detachable connection with mounting plates of different sizes and specifications, and the pre-set mounting holes on the mounting plates of different sizes and specifications have different hole spacing.

3. The liquid-cooled power supply cabinet as described in claim 1, characterized in that, The liquid-cooled power supply cabinet also includes a power distribution unit; The power distribution unit is detachably fixed to the cabinet body and connected to the liquid-cooled power module for outputting DC power.

4. The liquid-cooled power supply cabinet as described in claim 3, characterized in that, The power distribution unit includes multiple PDU units arranged in layers, and the multiple PDU units are detachably fixed to the cabinet body.

5. The liquid-cooled power supply cabinet as described in claim 3, characterized in that, The liquid-cooled power cabinet also includes a liquid-cooled heat exchange component; The liquid-cooled heat exchange assembly is connected to the liquid-cooled pipeline of the heat exchange area of ​​the liquid-cooled power module, and is used to exchange and discharge the heat generated by the liquid-cooled power module during operation through the coolant.

6. The liquid-cooled power supply cabinet as described in claim 5, characterized in that, The cabinet body has independent heat exchange compartments and power distribution compartments; The liquid-cooled power module and the power distribution unit are located inside the power distribution compartment; The heat exchange chamber and the power distribution chamber are isolated by a closed partition, and heat transfer is achieved through the liquid-cooled heat exchange assembly.

7. The liquid-cooled power supply cabinet as described in claim 6, characterized in that, The heat exchange chamber is equipped with heat dissipation fins and a fan module. The heat dissipation fins are connected to the liquid cooling pipes of the liquid cooling heat exchange assembly, and the fan module is used to dissipate heat from the heat dissipation fins.

8. The liquid-cooled power supply cabinet as described in claim 7, characterized in that, The liquid-cooled heat exchange assembly includes a coolant inlet pipe, a coolant outlet pipe, a coolant return pipe, a water pump unit, and a water tank. The coolant inlet pipe is connected to the inlet of the heat exchange area of ​​the liquid-cooled power module to transfer the coolant flowing through the heat dissipation fins to the heat exchange area. The coolant outlet pipe is connected to the outlet of the heat exchange area, and is used to transfer the coolant through the heat exchange area to the heat exchange chamber and flow through the heat dissipation fins. Through forced convection cooling by the fan unit, the air and the coolant in the heat dissipation fins exchange heat, and finally the heat of the coolant is carried to the surrounding atmosphere. The coolant return pipe is used to replenish and return the coolant in the water tank and the heat dissipation fins to each other.

9. A charging pile, characterized in that, Includes the charging pile body and the liquid-cooled power supply cabinet as described in any one of claims 1 to 8; The DC output port in the charging pile body is used to transmit the DC power output by the liquid-cooled power cabinet to the device to be charged through the charging terminal equipment.

10. A charging system, characterized in that, Includes the charging system body and the liquid-cooled power supply cabinet as described in any one of claims 1 to 8; The charging system also includes a communication interface, which is used to interact with the device to be charged and the intelligent operation management platform.

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