Charging device

Abstract

Embodiments of the present application relate to the technical field of energy and provide a charging device. The charging device comprises a cabinet body, a power conversion apparatus, an alternating current power distribution apparatus, and a direct current power distribution apparatus. The power conversion apparatus is located in the cabinet body. The power conversion apparatus comprises a plurality of power modules, and the plurality of power modules are used to perform power conversion on an inputted current and then output same. The alternating current power distribution apparatus is located on a side of the power conversion apparatus in a first direction. The alternating current power distribution apparatus comprises an alternating current switch device, and an output end of the alternating current switch device is electrically connected to an input end of the power conversion apparatus. The direct current power distribution apparatus is electrically connected to an output end of the power conversion apparatus. The direct current power distribution apparatus is used to distribute power outputted from the power conversion apparatus to at least one charging connector. The direct current power distribution apparatus is located on the side of the power conversion apparatus in the first direction, or the direct current power distribution apparatus is located on a side of the power conversion apparatus in a second direction.

Description

Charging equipment

[0001] This application claims priority to Chinese patent application No. 202423203029.8, filed with the State Intellectual Property Office of China on December 23, 2024, entitled “Charging Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of energy technology, and more particularly to a charging device. Background Technology

[0003] With the development of electric vehicle charging services, the requirements for prefabrication and modularization of charging equipment are becoming increasingly stringent. Among them, the power conversion device is the core component of the charging equipment, which can convert AC power into DC power and output the DC power to the charging connector to charge electric vehicles.

[0004] In related technologies, after the power conversion device is installed, other devices and components are mostly randomly distributed around the power conversion device. For example, switching devices and protection devices are randomly distributed in any area around the power conversion device. This unreasonable distribution makes it difficult to connect multiple devices and components and the wiring is complicated. The connecting wires (e.g., electrical wires) or copper busbars need to cross many devices for transfer. The power routing inside the cabinet is lengthy, which is not conducive to the development of charging equipment towards prefabrication and modularization.

[0005] Utility Model Content

[0006] This application provides a charging device that makes the internal layout of the charging device cabinet more reasonable, reduces the complexity of wiring between multiple devices, and is conducive to the development of charging devices towards prefabrication and modularization.

[0007] To achieve the above objectives, this application adopts the following technical solution:

[0008] This application provides a charging device, which includes a cabinet, a power conversion device, an AC power distribution device, and a DC power distribution device. The power conversion device is located inside the cabinet and includes multiple power modules for converting the input current into power before outputting it. The AC power distribution device includes an AC switching device, the input terminal of which is electrically connected to a power source, and the output terminal of which is electrically connected to the input terminal of the power conversion device. The DC power distribution device is electrically connected to the output terminal of the power conversion device and is used to distribute the power output by the power conversion device to at least one charging connector.

[0009] AC power distribution equipment controls the current input to the power source. For example, the AC switching devices in an AC power distribution equipment can control the on / off state of the circuit. The AC power distribution equipment connects to both the power source and the power conversion device. The AC power input from the AC power distribution equipment to the power conversion device can be converted into DC power before being output. The DC power output from the power conversion device is then distributed through a DC power distribution equipment, and the charging connector can access the power of the power conversion device through the DC power distribution equipment.

[0010] The AC power distribution device and the power conversion device are arranged along the first direction, the DC power distribution device and the power conversion device are arranged along the first direction, or the DC power distribution device and the power conversion device are arranged along the second direction, which is perpendicular to the first direction.

[0011] In other words, by placing the AC power distribution unit on the same side as the power conversion unit, the locations of multiple components within the AC power distribution unit are concentrated in one area, facilitating the integration of these components into a modular assembly. Furthermore, the DC power distribution unit is also located to the side of the power conversion unit. This arrangement, with the power conversion unit, AC power distribution unit, and DC power distribution unit each in their respective installation areas, reduces the arbitrariness in the installation positions of multiple devices and components within the cabinet. It also facilitates wiring between the AC power distribution unit, power conversion unit, and DC power distribution unit, promoting the prefabrication and modularization of charging equipment and simplifying the overall assembly and manufacturing of the charging equipment.

[0012] In one embodiment of this application, the AC power distribution device further includes a protection device, which is a surge protector. The input terminal of the protection device is electrically connected to the input terminal or output terminal of the AC switching device, and the output terminal of the protection device is grounded.

[0013] Surge protectors in AC power distribution systems provide safety protection for the lines. For example, when a surge current or voltage suddenly occurs in the power circuit of a charging device, the protection device can conduct and divert the current in a very short time, thereby reducing the risk of the surge damaging other equipment in the power circuit.

[0014] In one embodiment of this application, the AC power distribution device further includes a protection device, which is a fuse. The protection device is electrically connected to the output terminal of the AC switching device and the input terminal of the power conversion device, or the protection device is electrically connected to the input terminal of the AC switching device and the power supply.

[0015] Protective devices (fuses) respond faster than AC switching devices. When the current flowing through the protective device rises to a certain level, the device can melt itself and quickly disconnect the circuit between the power supply and the power conversion device, protecting the safe operation of the circuit. In one example, the protective device can disconnect the circuit between the AC switching device and the power supply; in another example, it can disconnect the circuit between the AC switching device and the power conversion device.

[0016] In one embodiment of this application, the length of the power conversion device in the first direction and the length of the power conversion device in the second direction are both less than the length of the power conversion device in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; the AC power distribution device and the DC power distribution device are both located on the same side of the power conversion device in the first direction, and the AC power distribution device is located on the side of the DC power distribution device in the third direction.

[0017] The smaller size of the power conversion unit in the first direction allows both the AC and DC power distribution units to be located on the same side of the power conversion unit in that direction. This reduces the space occupied by the AC and DC power distribution units within the cabinet and makes efficient use of the space located to the side of the power conversion unit. Furthermore, the AC power distribution unit is located to the side of the DC power distribution unit in the third direction, placing them in their respective areas. This facilitates modular design for both AC and DC power distribution units and reduces the likelihood of overlapping input lines (e.g., conductors) between the AC and DC power distribution units, minimizing the possibility of cross-area wiring and ensuring smoother wiring of the charging equipment.

[0018] In one embodiment of this application, multiple power modules are arranged along a third direction, with the first direction, the second direction, and the third direction being perpendicular to each other. The multiple power modules are at least divided into a first power module group and a second power module group. The first power module group includes at least one AC-DC module, and the second power module group includes at least one DC-DC module. The second power module group is located to the side of the first power module group in the third direction. The output terminal of at least one AC-DC module in the first power module group is electrically connected to the input terminal of at least one DC-DC module in the second power module group. The input terminal of at least one AC-DC module in the first power module group is electrically connected to the output terminal of an AC switching device, and the output terminal of at least one DC-DC module in the second power module group is electrically connected to the input terminal of a DC power distribution device. The AC power distribution device is located to the side of the first power module group in the first direction, and the DC power distribution device is located to the side of the second power module group in the first direction.

[0019] The first power module group converts AC power from the AC distribution unit into DC power, which is then transmitted to the second power module group. The second power module group steps up or steps down the voltage before sending it to the DC distribution unit. The AC distribution unit is located near the input terminal of the first power module group for easy electrical connection, and similarly, the DC distribution unit is located near the output terminal of the second power module group for easy electrical connection. This design reduces the complexity of the power transmission path.

[0020] In one embodiment of this application, multiple power modules are arranged along a third direction, with the first direction, the second direction, and the third direction being perpendicular to each other. The multiple power modules are at least divided into a first power module group, a second power module group, and a third power module group, with the first power module group located between the second power module group and the third power module group. The power conversion device also includes a bus. The first power module group includes at least one AC-DC module, and the second power module group and the third power module group each include at least one DC-DC module. The output terminal of at least one AC-DC module of the first power module group is electrically connected to the input terminal of at least one DC-DC module of the second power module group and the input terminal of at least one DC-DC module of the third power module group through the bus.

[0021] The power module group used for boosting or bucking is divided into two parts (second power module group and third power module group). The two power modules used for boosting or bucking are located on different sides of the first power module group. The power output of the first power module group is transmitted to the second and third power module groups on both sides through the bus. That is, the power transmission path on the bus is from the middle to both sides, which can reduce the local current density on the bus, reduce the current carrying capacity of the bus, and save production costs.

[0022] In one embodiment of this application, the DC power distribution device includes a first part and a second part arranged along a third direction, and an AC power distribution device is located between the first part and the second part; the first part and the second power module group are located on the same side of the first power module group along the third direction, and the first part is electrically connected to the output terminal of at least one DC-DC module of the second power module group; the second part and the third power module group are located on the same side of the first power module group along the third direction, and the second part is electrically connected to the output terminal of at least one DC-DC module of the third power module group.

[0023] Since the second and third power module groups are located on different sides of the first power module, the output terminals of the power conversion device are distributed on different sides of the first power module group. By adopting the above technical solution, the DC power distribution device is divided into two parts (a first part and a second part), with the first part closer to the second power module group and the second part closer to the third power module group. This facilitates electrical connection between the input terminal of the first part and the output terminal of the second power module group, and also facilitates electrical connection between the input terminal of the second part and the output terminal of the third power module group, reducing the complexity of the power transmission path. The charging connector can access the power output of the second power module group through the first part, and conversely, the charging connector can also access the power output of the second power module group through the second part.

[0024] In one embodiment of this application, the charging device further includes a first controller and a second controller, both of which are located inside a cabinet. The first controller is electrically connected to at least one AC-DC module of the first power module group, and the second controller is electrically connected to at least one DC-DC module of the second power module group. The first controller and the second controller are located between the first power module and the second power module.

[0025] The control device is installed between the first power module group and the second power module group. This places the control device in a more central position within the cabinet, closer to the AC and DC power distribution devices. Both the AC and DC power distribution devices can be electrically connected to the control device, allowing simultaneous control of the power conversion device, AC power distribution device, and DC power distribution device.

[0026] In one embodiment of this application, the AC power distribution device includes an input terminal electrically connected to the input terminal of an AC switching device. The input terminal is used to electrically connect to a power source via a cable. The cabinet includes a power cavity and a distribution cavity that are separated from each other and are arranged along a first direction. The power conversion device is located in the power cavity, and the input terminal and the AC switching device are both located in the distribution cavity. The charging device also includes a cabinet door connected to the cabinet body and movable relative to the cabinet body. The cabinet door is used to open or close the power cavity and the distribution cavity. The input terminal faces the cabinet door, and multiple power modules can move in a direction close to or away from the cabinet door.

[0027] When workers need to disassemble the power converter for inspection or maintenance, they can open the cabinet door and check whether the cables are connected to the input terminals to determine whether the power converter is powered on. Based on the cable connection, they can decide whether to directly disassemble or maintain the power converter, thus reducing safety hazards during the operation.

[0028] In one embodiment of this application, the first direction is parallel to the vertical direction, and the power conversion device includes multiple power modules arranged along a third direction, with the first direction, the second direction, and the third direction being perpendicular to each other.

[0029] By arranging multiple power modules of the power converter along a third horizontal direction, the heat from each power module is directly transferred upwards and dissipated through heat exchange with the air, preventing the heat from being transferred from multiple power modules to a single module (for example, if multiple power modules were arranged vertically, the topmost power module would have a higher risk of overheating). This results in a more uniform heat distribution, better heat dissipation, and a reduced risk of individual power modules overheating. Furthermore, with multiple power modules arranged horizontally, the DC bus connected to these modules extends horizontally along the cabinet. This can be further evolved to allow the DC bus to run through the entire cabinet, facilitating parallel storage and capacity expansion.

[0030] In one embodiment of this application, multiple power modules are located above an AC power distribution device.

[0031] Since the heat from the power conversion device rises, placing the power conversion device above the AC power distribution device reduces the possibility of the heat from the power conversion device affecting the AC power distribution device.

[0032] In one embodiment of this application, the charging device further includes a wire, a portion of which is located inside the cabinet and electrically connected to the DC power distribution device, and another portion of which is located outside the cabinet and is used for electrical connection to the charging connector. The cabinet has a through opening through which the wire passes. The DC power distribution device and the power conversion device are arranged along a second direction. Both the first and second directions are perpendicular to a third direction, which is parallel to the vertical direction. In the third direction, the bottom surface of the DC power distribution device is higher than the through opening, and there is a space between the DC power distribution device and the bottom of the cabinet to accommodate the wire.

[0033] By placing the DC and AC power distribution devices on different sides of the power conversion unit, sufficient space is provided on the side where the DC power distribution device is located. This space can accommodate the wiring and also serve as an operating space for workers to install and maintain the wiring. The wiring passes through this space and the through-hole before extending outside the cabinet, where the extended portion connects to the charging connector.

[0034] In one embodiment of this application, the charging device further includes a cooling device located inside the cabinet. Each power module includes a cooling channel, and the cooling device is used to drive the cooling medium to flow within the cooling channel. The cooling device is located on the side of the power conversion device away from the DC power distribution device. Alternatively, multiple power modules are arranged along a third direction, and the charging device further includes a cooling pipe. The cooling channel of each power module is connected to the cooling device through the cooling pipe. The cooling pipe extends along a third direction, and the cooling device is located on the side of multiple power modules in the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0035] The cooling device enables the cooling medium to flow within the cooling channel, thereby cooling the power converter. In one configuration, the cooling device is located on the side of the power converter away from the DC power distribution unit. This side has ample space, facilitating the installation of the cooling device. Furthermore, its proximity to the power converter facilitates the connection of cooling pipes between the cooling device and the power converter. In another configuration, the cooling device is located on the side of multiple power modules facing a third direction. Each power module has a medium inlet and a medium outlet connected to the cooling channel. To allow the cooling medium to flow within the channel, each power module's medium inlet can be connected to one pipe, and each power module's medium outlet can be connected to another pipe. These two pipes (cooling pipes) extend along a third direction. The cooling device located on the side of the power converter facing a third direction facilitates connection to these two pipes and reduces the length of the cooling pipes. Attached Figure Description

[0036] Figure 1 is a schematic diagram of the overall structure of a charging device provided in an embodiment of this application;

[0037] Figure 2 is a schematic diagram of the overall structure of another charging device provided in an embodiment of this application;

[0038] Figure 3 is a partial structural schematic diagram of a charging device provided in an embodiment of this application;

[0039] Figure 4 is a schematic diagram of a power conversion device provided in an embodiment of this application;

[0040] Figure 5 is a view of the structure in Figure 4 from one perspective;

[0041] Figure 6 is a schematic diagram of another power conversion device provided in an embodiment of this application;

[0042] Figure 7 is a schematic diagram of a busbar structure provided in an embodiment of this application;

[0043] Figure 8 is a schematic diagram of another busbar structure provided in an embodiment of this application;

[0044] Figure 9 is a schematic diagram of a control device provided in an embodiment of this application;

[0045] Figure 10 shows various installation positions of the control device in a charging device according to an embodiment of this application;

[0046] Figure 11 shows various installation positions of the control device in another charging device provided in an embodiment of this application;

[0047] Figure 12 is a schematic diagram of the structure of a power cavity and a power distribution cavity provided in an embodiment of this application;

[0048] Figure 13 is a partial structural schematic diagram of another charging device provided in an embodiment of this application;

[0049] Figure 14 is a schematic diagram of a cooling device provided in an embodiment of this application;

[0050] Figure 15 is a schematic diagram of another cooling device provided in an embodiment of this application;

[0051] Figure 16 is a partial structural schematic diagram of a cooling channel provided in an embodiment of this application;

[0052] Figure 17 is a partial structural schematic diagram of a cooling pipe provided in an embodiment of this application;

[0053] Figure 18 is a partial structural schematic diagram of another charging device provided in an embodiment of this application;

[0054] Figure 19 is a partial structural schematic diagram of another cooling pipe provided in an embodiment of this application;

[0055] Figure 20 is a partial structural schematic diagram of another charging device provided in an embodiment of this application;

[0056] Figure 21 is a partial structural schematic diagram of another charging device provided in an embodiment of this application.

[0057] Reference numerals: 01-Charging equipment; 02-Power supply; 03-Cable; 1-Cabinet; 11-Power cavity; 12-Distribution cavity; 13-Block; 14-Protective shell; 15-Fan; 16-Pass-through opening; 17-Cabinet door; 2-Power conversion device; 21-Power module; 2101-First power module group; 2102-Second power module group; 2103-Third power module group; 211-Shell; 2111-Medium inlet; 2112-Medium outlet; 212-Circuit board; 213-Power device; 214-Cooling plate; 2141-Cooling channel; 22-Liquid cooling channel; 3-AC power distribution device; 31-AC switching device; 32-Protection device; 33-Input terminal; 4-DC power distribution device; 41- Part 1; 42-Part 2; 5-Wire; 51-First segment; 52-Second segment; 6-Charging connector; 7-Terminal cabinet; 8-Busbar; 9-Control device; 91-First controller; 92-Second controller; 10-Cooling device; 101-First driving component; 102-Heat exchanger; 1021-First heat exchange channel; 1022-Second heat exchange channel; 103-Second driving component; 104-Reservoir tank; 20-Cooling pipe; 201-First main pipe; 202-First branch pipe; 203-Second main pipe; 204-Second branch pipe. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0059] In this application, the terms "first," "second," etc., are used for descriptive purposes only to distinguish one element from another, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0060] In this application, unless otherwise expressly stated and limited, "multiple" means two or more.

[0061] Furthermore, in this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0062] In the accompanying drawings of the embodiments of this application, solid structures such as components and assemblies are represented by guide lines; structures composed of multiple components are represented by guide lines with parentheses or solid arrows; and hollow structures such as openings, holes, spaces, and cavities are represented by guide lines with hollow arrows.

[0063] This application provides a charging device 01. Figure 1 shows the structure of a charging device 01. Referring to Figure 1, the charging device 01 is an integrated charging pile. The charging device 01 includes a cabinet 1, a power conversion device 2, an AC power distribution device 3, and a DC power distribution device 4. The power conversion device 2, the AC power distribution device 3, and the DC power distribution device 4 are all installed inside the cabinet 1.

[0064] Referring to Figure 1, the input terminal of the AC power distribution device 3 is connected to the power source 02, which can be the power grid. The output terminal of the AC power distribution device 3 is connected to the power conversion device 2, which converts the input current into power before outputting it. For example, the power conversion device 2 converts the AC power input from the power grid into DC power before outputting it. The output terminal of the power conversion device 2 is connected to the input terminal of the DC power distribution device 4, which can be used for power distribution. For example, the DC power distribution device 4 includes multiple switching devices (e.g., relays, contactors, etc.) to control the on / off state of the circuit, thereby distributing the output power of the power conversion device 2.

[0065] In addition, the charging device 01 also includes a wire 5 and a charging connector 6 (e.g., a charging gun). Referring to Figure 1, the charging connector 6 is located outside the cabinet 1. The charging connector 6 is used to connect the device to be charged (e.g., an electric vehicle). The charging connector 6 is connected to the output terminal of the DC power distribution device 4 via the wire 5, enabling the charging connector 6 to draw power from the power conversion device 2 through the DC power distribution device 4. For example, the power conversion device 2 includes multiple AC-DC modules. The charging connector 6 can draw power from one AC-DC module through the DC power distribution device 4, or the charging connector 6 can draw power from several AC-DC modules through the DC power distribution device 4.

[0066] Figure 2 illustrates the structure of another charging device 01. Referring to Figure 2, the charging device 01 is a split-type charging pile. The charging device 01 includes a main unit, a terminal unit, and wires 5. The main unit of the charging device 01 includes a cabinet 1, a power conversion device 2, an AC power distribution device 3, and a DC power distribution device 4, all housed within the cabinet 1. The terminal unit of the charging device 01 includes a terminal cabinet 7 and a charging connector 6. The terminal cabinet 7 contains a transfer structure (e.g., a transfer copper busbar), and the charging connector 6 is located outside the terminal cabinet 7. The output end of the DC power distribution device 4 is connected to the transfer assembly inside the terminal cabinet 7 via the first segment 51 of the wire 5, and the input end of the charging connector 6 is connected to the transfer structure inside the terminal cabinet 7 via the second segment 52 of the wire 5. This allows the charging connector 6 to be connected to the output end of the DC power distribution device 4 via the wires 5.

[0067] Figure 3 illustrates a partial structure of a charging device 01, and a portion of the cabinet 1 is omitted in Figure 3, thus allowing observation of the internal structure of the cabinet 1. Referring to Figure 3, the AC power distribution device 3 includes an AC switching device 31, which can be an AC circuit breaker or other switching devices used to control the on / off state of the circuit. The input terminal of the AC switching device 31 is used to connect to a power supply 02 (the power supply 02 can be referred to in Figure 2), and the output terminal of the AC switching device 31 is electrically connected to the input terminal of the power conversion device 2.

[0068] In the example shown in Figure 3, the AC power distribution device 3 also includes a protection device 32, which is electrically connected to the input or output terminal of the AC switching device 31. The protection device 32 can protect the safe operation of the circuit. For example, the protection device 32 is a fuse. When the current flowing through the protection device 32 rises to a certain level (abnormal rise), the protection device 32 can melt itself and quickly disconnect the circuit between the power supply 02 and the power conversion device 2 (the response speed of the protection device 32 is faster than that of the AC switching device 31). Alternatively, the protection device 32 can be electrically connected to the input terminal of the AC switching device 31 and the power supply 02, thus disconnecting the circuit between the AC switching device 31 and the power supply 02. Or, the protection device 32 can also be electrically connected to the output terminal of the AC switching device 31 and the input terminal of the power conversion device 2, thus disconnecting the circuit between the AC switching device 31 and the input terminal of the power conversion device 2. For example, the protection device 32 is a surge protector (or lightning arrester). The input terminal of the protection device 32 is electrically connected to the input terminal of the AC switching device 31, and the output terminal of the protection device 32 is grounded (e.g., connected to ground through a grounding wire). In this case, the protection device 32 is used for current shunting. For example, when a surge current or voltage suddenly occurs in the power circuit of the charging device 01, the protection device 32 can conduct current shunting in a very short time, thereby reducing the risk of the surge damaging other devices in the power circuit.

[0069] In some other examples, AC power distribution unit 3 also includes devices such as power meters.

[0070] Referring to Figure 3, the AC power distribution device 3 and the power conversion device 2 are arranged along a first direction. It should be noted that the first direction is the arrangement direction of the AC power distribution device 3 and the power conversion device 2. The second and third directions are both perpendicular to the first direction, that is, the second and third directions are both perpendicular to the arrangement direction of the AC power distribution device 3 and the power conversion device 2. Furthermore, the second and third directions are mutually perpendicular. In the example shown in Figure 3, the first direction is parallel to the vertical direction, and the second and third directions are two mutually perpendicular horizontal directions. By placing multiple devices of the AC power distribution device 3 (e.g., AC switching device 31 and protection device 32) on the same side of the power conversion device 2, the positions of multiple devices in the AC power distribution device 3 are concentrated in one area, facilitating the integration of multiple devices of the AC power distribution device 3 into a modular component.

[0071] Furthermore, referring to Figure 3, the DC power distribution device 4 is located to the side of the power conversion device 2 in the first direction, so that the entire DC power distribution device 4 is also located to the side of the power conversion device 2. In this way, the power conversion device 2, the AC power distribution device 3, and the DC power distribution device 4 are in their respective installation areas, which reduces the randomness of the installation positions of multiple devices and components inside the cabinet 1, facilitates the wiring between the power conversion device 2, the AC power distribution device 3, and the DC power distribution device 4, reduces the complexity of the wiring inside the cabinet 1, and is conducive to the development of the charging equipment 01 towards prefabrication and modularization, and facilitates the overall assembly and manufacturing of the charging equipment 01.

[0072] For example, by fixing the various components (e.g., AC switching device 31 and protection device 32) of the AC power distribution unit 3 together, the AC power distribution unit 3 can be integrated into a module. Similarly, by fixing the various components of the DC power distribution unit 4 together, the AC power distribution unit 3 can be integrated into a module. During maintenance, the entire modular AC power distribution unit 3 or the entire modular DC power distribution unit 4 can be disassembled or replaced as a whole. Alternatively, depending on the needs, a part of the module can be disassembled, for example, the AC switching device 31 or the protection device 32 can be disassembled separately in the modular AC power distribution unit 3.

[0073] In one example, the AC power distribution device 3 and the DC power distribution device 4 can be located on the same side of the power conversion device 2. For example, referring to Figure 3, the length of the power conversion device 2 in the first direction and the length of the power conversion device 2 in the second direction are both less than the length of the power conversion device 2 in the third direction; that is, the power conversion device 2 is longest in the third direction. Both the AC power distribution device 3 and the DC power distribution device 4 are located on the same side of the power conversion device 2 in the first direction. In the example shown in Figure 3, the first direction is vertical, and both the AC power distribution device 3 and the DC power distribution device 4 are located below (or on the lower side) of the power conversion device 2. The smaller size of the power conversion device 2 in the first direction, allowing both the AC power distribution device 3 and the DC power distribution device 4 to be located on the same side of the power conversion device 2 in the first direction, reduces the space occupied by the AC power distribution device 3 and the DC power distribution device 4 within the cabinet 1, and makes reasonable use of the space located to the side of the power conversion device 2.

[0074] In some other examples, the DC power distribution unit 4 and the AC power distribution unit 3 are located on different sides of the power conversion unit 2. For example, when the first direction is vertical, the AC power distribution unit 3 is located below the power conversion unit 2, and the DC power distribution unit 4 is located above the power conversion unit 2.

[0075] Referring to Figure 3, when the AC power distribution device 3 and the DC power distribution device 4 are located on the same side of the power conversion device 2, the AC power distribution device 3 (e.g., including AC switching device 31 and protection device 32) is located on the side of the DC power distribution device 4 in a third direction. That is, the AC power distribution device 3 and the DC power distribution device 4 are installed in their respective areas, which is beneficial for modular design of the AC power distribution device 3 and the DC power distribution device 4. It also reduces the possibility of overlapping between the input line connected to the AC power distribution device 3 and the output line (e.g., conductor 5) connected to the DC power distribution device 4, reduces the possibility of cross-area wiring of the input line and the output line, and makes the wiring of the charging device 01 more logical.

[0076] In addition, in some examples, the AC power distribution device 3 includes multiple AC power distribution units, each AC power distribution unit including at least one AC switching device 31 and at least one protection device 32, and the multiple AC power distribution units are arranged along a third direction.

[0077] In some examples, the input and output terminals of the power conversion device 2 are distributed along a third direction. Referring to Figure 3, the hollow arrow S1 indicates the location of the input terminal of the power conversion device 2 (approximate area, only used to show the positional relationship with the output terminal of the power conversion device 2), and the hollow arrow S2 indicates the location of the output terminal of the power conversion device 2 (approximate area, only used to show the positional relationship with the input terminal of the power conversion device 2).

[0078] In the third direction, AC power distribution device 3 is closer to the input terminal of power conversion device 2 than DC power distribution device 4, and DC power distribution device 4 is closer to the output terminal of power conversion device 2 than AC power distribution device 3. That is, referring to Figure 3, AC power distribution device 3 is closer to the input terminal of power conversion device 2 than DC power distribution device 4, and DC power distribution device 4 is closer to the output terminal of power conversion device 2 than AC power distribution device 3. For example, AC power distribution device 3 is located below the input terminal of power conversion device 2, and DC power distribution device 4 is located below the output terminal of power conversion device 2.

[0079] The AC power distribution unit 3 is positioned close to the input terminal of the power conversion unit 2, concentrating its location on one side of the input terminal. This facilitates the electrical connection between the AC switching device 31 and the input terminal of the power conversion unit 2. For example, a shorter connecting wire (e.g., an electrical cable) or copper busbar can be used to achieve the electrical connection between the AC switching device 31 and the input terminal of the power conversion unit 2. Similarly, positioning the DC power distribution unit 4 close to the output terminal of the power conversion unit 2 also facilitates the electrical connection between the DC power distribution unit 4 and the output terminal of the power conversion unit 2. Again, a shorter connecting wire or copper busbar can be used to achieve the electrical connection between the DC power distribution unit 4 and the power conversion unit 2. This allows for a more rational layout of the multiple devices within the cabinet 1 and reduces the complexity of the internal wiring.

[0080] The power conversion device 2 can also be other suitable structures. For example, Figure 4 exemplarily illustrates the structure of a power conversion device 2. Referring to Figure 4, the power conversion device 2 includes a plurality of power modules 21 arranged along a third direction. The plurality of power modules 21 are used to convert the input current into power and output it. For example, the plurality of power modules 21 are at least divided into a first power module group 2101 and a second power module group 2102, that is, the first power module group 2101 and the second power module group 2102 each include one or more power modules 21. Among them, the first power module group 2101 includes one or more AC-DC modules (power modules 21). For example, the first power module group 2101 in Figure 4 includes a plurality of AC-DC modules, and the first power module group 2101 is used to convert alternating current into direct current. The second power module group 2102 includes one or more DC-DC modules (power modules 21). For example, the second power module group 2102 in Figure 4 includes a plurality of DC-DC modules, and the second power module group 2102 is used for boosting or bucking voltage.

[0081] The input terminal of the first power module group 2101 is electrically connected to the output terminal of the AC switching device 31, meaning that the input terminals of all AC-DC modules in the first power module group 2101 are electrically connected to the output terminals of the AC switching device 31. The output terminal of the first power module group 2101 is electrically connected to the input terminal of the second power module group 2102, meaning that the output terminals of all AC-DC modules in the first power module group 2101 are electrically connected to the input terminals of all DC-DC modules in the second power module group 2102. The output terminal of the second power module group 2102 is electrically connected to the input terminal of the DC power distribution device 4, meaning that the output terminals of all DC-DC modules in the second power module group 2102 are electrically connected to the input terminal of the DC power distribution device 4. This allows the first power module group 2101 to convert AC power from the AC power distribution device 3 into DC power, which is then transmitted to the second power module group 2102. After being stepped up or down by the second power module group 2102, the DC power is then delivered to the DC power distribution device 4.

[0082] In the example shown in Figure 4, the input terminals of the power conversion device 2 include the input terminals of all AC-DC modules of the first power module group 2101, and the output terminals of the power conversion device 2 include the output terminals of all DC-DC modules of the second power module group 2102. That is, the input terminals of the first power module group 2101 and the output terminals of the second power module group 2102 are arranged along a third direction. The AC power distribution device 3 is located to the side of the first power module group 2101 in the first direction (e.g., the lower side in Figure 4), and the DC power distribution device 4 is located to the side of the second power module group 2102 in the first direction (e.g., the lower side in Figure 4).

[0083] Referring to Figure 4, the AC power distribution device 3 is located near the input terminal of the first power module group 2101, facilitating electrical connection between the AC power distribution device 3 and the input terminal of the first power module group 2101. Similarly, the DC power distribution device 4 is located near the output terminal of the second power module group 2102, facilitating electrical connection between the DC power distribution device 4 and the output terminal of the second power module group 2102. This design reduces the complexity of the power transmission path within the cabinet 1.

[0084] Figure 5 exemplarily illustrates a view of the structure in Figure 4 from one perspective, parallel to the second direction. Figure 5 can be understood as a front view of the structure in Figure 4. The four shaded arrows located outside the cabinet 1 in Figure 5 visually show the approximate path of power transmission within the cabinet 1. It can also be clearly seen from Figure 5 that, in this example, the AC power distribution device 3 is located directly below the first power module group 2101, and the DC power distribution device 4 is located directly below the second power module group 2102.

[0085] Figure 6 illustrates the structure of another power conversion device 2. Referring to Figure 6, the power conversion device 2 includes a plurality of power modules 21 arranged along a third direction. The plurality of power modules 21 are at least divided into a first power module group 2101, a second power module group 2102, and a third power module group 2103. That is, the first power module group 2101, the second power module group 2102, and the third power module group 2103 each include one or more power modules 21. The first power module group 2101 includes one or more AC-DC modules (power modules 21). For example, the first power module group 2101 in Figure 6 includes multiple AC-DC modules. The first power module group 2101 is used to convert AC power into DC power. The second power module group 2102 and the third power module group 2103 each include one or more DC-DC modules (power modules 21). For example, the second power module group 2102 in Figure 6 includes multiple DC-DC modules, and the third power module group 2103 in Figure 6 includes multiple DC-DC modules. Both the second power module group 2102 and the third power module group 2103 are used for boosting or bucking voltage.

[0086] Referring to Figure 6, the first power module group 2101 is located between the second power module group 2102 and the third power module group 2103. That is, all (one or more) AC-DC modules of the first power module group 2101 are located between all (one or more) DC-DC modules of the second power module group 2102 and all (one or more) DC-DC modules of the third power module group 2103.

[0087] The output terminal of the first power module group 2101 is electrically connected to the input terminals of the second power module group 2102 and the third power module group 2103. That is, the output terminals of all AC-DC modules in the first power module group 2101 are electrically connected to the input terminals of all DC-DC modules in the second power module group 2102 and also to the input terminals of all DC-DC modules in the third power module group 2103. For example, the charging device 01 also includes a busbar 8. Figure 7 exemplarily illustrates the structure of a busbar 8. Referring to Figure 7, the busbar 8 can be a metal busbar (copper busbar, aluminum busbar, etc.). In other examples, the busbar 8 can also be a connecting wire (e.g., an electrical wire). The output terminal of the first power module group 2101 is electrically connected to the input terminals of the second power module group 2102 and the third power module group 2103 via the bus 8. Since the second power module group 2102 and the third power module group 2103 are located on different sides of the first power module group 2101, the power output by the first power module group 2101 will be transmitted to the second power module group 2102 and the third power module group 2103 on both sides via the bus 8. That is, the power transmission path on the bus 8 is from the middle to both sides, which can reduce the local current density on the bus 8, reduce the current carrying capacity of the bus 8, and save the cost of the charging equipment 01.

[0088] For example, in the example where busbar 8 is a metal busbar, referring to Figure 7, during the process of the first power module group 2101 transmitting current to the second power module group 2102 through busbar 8, the current density of busbar 8 in the region between the first power module group 2101 and the second power module group 2102 is relatively high. Similarly, during the process of the first power module group 2101 transmitting current to the third power module group 2103 through busbar 8, the current density of busbar 8 in the region between the first power module group 2101 and the third power module group 2103 is also relatively high. Therefore, in order to meet the current carrying capacity of busbar 8, busbar 8 will be relatively wide in the region with high current density.

[0089] Figure 8 illustrates an alternative structure for bus 8. It is understood that the second power module group 2102 and the third power module group 2103 in Figure 8 are located on the same side of the first power module group 2101. In this way, during the process of the first power module group 2101 transmitting current to the second power module group 2102 and the third power module group 2103 through bus 8, more current is superimposed in the middle region of bus 8, the current density is higher, and bus 8 is wider in this region.

[0090] By comparing busbar 8 in Figure 7 and busbar 8 in Figure 8, it can be clearly observed that by using the power conversion device 2 in Figure 7, the concentrated area of ​​current on busbar 8 can be dispersed to two locations, thereby reducing the local current density on busbar 8 and thus reducing the current carrying capacity of busbar 8.

[0091] In the example where multiple power modules 21 are arranged horizontally (including the examples in Figure 5 and Figure 6), the busbar 8 (e.g., DC busbar) connected to the multiple power modules 21 will extend horizontally along the cabinet 1. Later, it can be evolved so that the busbar 8 runs through the cabinet 1, which is conducive to the expansion and evolution of multiple cabinets 1 and charging equipment 01.

[0092] Furthermore, when the second power module group 2102 and the third power module group 2103 are located on different sides of the first power module group 2101, the output terminals of the power conversion device 2 will also be distributed on different sides of the first power module group 2101. Therefore, in some examples, the DC power distribution device 4 can be divided into two parts. Referring back to FIG6, the DC power distribution device 4 includes a first part 41 and a second part 42 arranged along a third direction, and the AC power distribution device 3 is located between the first part 41 and the second part 42.

[0093] Referring to Figure 6, the first part 41 and the second power module group 2102 are located on the same side of the first power module group 2101 in the third direction. The input terminal of the first part 41 is electrically connected to the output terminal of the second power module group 2102, that is, the input terminal of the first part 41 is electrically connected to the output terminals of all DC-DC modules (power modules 21) of the second power module group 2102. The second part 42 and the third power module group 2103 are located on the same side of the first power module group 2101 in the third direction. The input terminal of the second part 42 is electrically connected to the output terminal of the third power module group 2103, that is, the input terminal of the second part 42 is electrically connected to the output terminals of all DC-DC modules (power modules 21) of the third power module group 2103. In the example shown in Figure 6, the first part 41 is located directly below the second power module group 2102, and the second part 42 is located directly below the third power module group 2103. The first part 41 is positioned close to the second power module group 2102, and the second part 42 is positioned close to the third power module group 2103. This facilitates both the electrical connection between the first part 41 and the second power module group 2102, and the electrical connection between the second part 42 and the third power module group 2103.

[0094] In the example shown in Figure 6, the charging connector 6 can access the power output by the second power module group 2102 through the first part 41, and the charging connector 6 can also access the power output by the second power module group 2102 through the second part 42.

[0095] In some examples, the charging device 01 also includes a control device 9. Figure 9 exemplarily illustrates the structure of one such control device 9, wherein the power conversion device 2 in Figure 9 is the same as the power conversion device 2 in Figure 5, and will not be described again here. The control device 9 is located inside the cabinet 1, and includes a first controller 91 and a second controller 92. The first controller 91 is electrically connected to the first power module group 2101. For example, the first controller 91 is electrically connected to all AC-DC modules (power modules 21) of the first power module group 2101, and is used to control the power output of all AC-DC modules of the first power module group 2101. The second controller 92 is electrically connected to the second power module group 2102. For example, the second controller 92 is electrically connected to all DC-DC modules (power modules 21) of the second power module group 2102, and is used to control the power output of the second power module group 2102. That is, the control device 9 can control the power output of both the first power module group 2101 and the second power module group 2102.

[0096] In the example shown in Figure 9, the first controller 91 and the second controller 92 can be two control boards, each including a circuit board and multiple electronic components located on the circuit board (e.g., the multiple electronic components include control chips). In some other examples, the first controller 91 and the second controller 92 can be integrated into a single control board, which includes a circuit board and multiple electronic components located on the circuit board (the multiple electronic components include multiple control chips).

[0097] The control device 9 (including the first controller 91 and the second controller 92) can be set in any suitable location inside the cabinet 1. For example, referring to Figure 9, the control device 9 is located on the side of the first power module group 2101 away from the second power module group 2102. In the example shown in Figure 9, the interference of the control device 9 on the wiring between the first power module group 2101 and the second power module group 2102 is reduced.

[0098] Figure 10 exemplarily illustrates various installation positions of the control device in a charging device 01. The location of the control device 9 in Figure 9 can be understood as the location of the shaded box K1 in Figure 10. In other examples, the control device 9 is located between the first power module group 2101 and the second power module group 2102; that is, referring to Figure 10, the control device 9 is located at the location of the shaded box K2. Installing the control device 9 between the first power module group 2101 and the second power module group 2102 places it in a position closer to the center of the cabinet 1. This allows the control device 9 to be closer to the AC power distribution device 3 and the DC power distribution device 4, both of which can be electrically connected to the control device 9. In this way, the control device 9 can simultaneously control the first power module group 2101, the second power module group 2102, the AC power distribution device 3, and the DC power distribution device 4.

[0099] In some other examples, referring to Figure 10, the control device 9 can also be located at the position of the shaded box K3, that is, the control device 9 is located on the side of the second power module group 2102 away from the first power module group 2101; the control device 9 can also be located at the position of the shaded box K4, that is, the control device 9 is located on the side of the AC power distribution device 3 away from the DC power distribution device 4; the control device 9 can also be located at the position of the shaded box K5, that is, the control device 9 is located between the AC power distribution device 3 and the DC power distribution device 4; the control device 9 can also be located at the position of the shaded box K6, that is, the control device 9 is located on the side of the DC power distribution device 4 away from the AC power distribution device 3; the control device 9 can also be located at the position of the shaded box K7, that is, the control device 9 is located on the side of the power conversion device 2 away from the DC power distribution device 4.

[0100] Furthermore, Figure 11 exemplarily illustrates various installation positions of the control device in another charging device 01. The power conversion device 2 in Figure 11 is the same as the power conversion device 2 in Figure 6, and will not be described again here. Referring to Figure 11, the control device 9 can be located on the side of the first power module group 2101 away from the second power module group 2102 (the location of the shaded box K2), or between the first power module group 2101 and the second power module group 2102 (the location of the shaded box K3). The control device 9 can also be located at the location of the shaded box K1, the location of the shaded box K4, the location of the shaded box K5, ..., the location of the shaded box K8 or the location of the shaded box K9. This application does not impose specific limitations on these locations.

[0101] In other examples, regardless of its location within the cabinet 1, the control device 9 is also electrically connected to the AC switching device 31, enabling it to control the AC switching device 31; furthermore, the control device 9 is also electrically connected to the DC power distribution device 4, enabling it to control the power distribution of the DC power distribution device 4.

[0102] In some examples, the internal space of cabinet 1 can be partitioned. For example, cabinet 1 includes a power cavity 11 and a distribution cavity 12 that are separated from each other (e.g., by a partition 13). Figure 12 exemplarily shows the structure of the power cavity 11 and the distribution cavity 12, which are arranged along a first direction. The power conversion device 2 is located in the power cavity 11, and the AC power distribution device 3 is located in the distribution cavity 12. It is understood that if the DC power distribution device 4 and the AC power distribution device 3 are located on the same side of the power conversion device 2, the DC power distribution device 4 is also located in the distribution cavity 12. For example, the distribution cavity 12 includes an area (area a) for installing the AC power distribution device 3 and an area (area b) for installing the DC power distribution device 4. Areas a and b can be separated from each other by a partition structure (e.g., a plate structure); areas a and b can also be interconnected, that is, the distribution cavity 12 is a complete and undivided space.

[0103] Referring to Figure 12, in some examples, the charging device 01 also includes a cabinet door 17 (the shaded area in Figure 12 represents the cabinet door 17), which is connected to the cabinet body 1 and is movable relative to the cabinet body 1. For example, the cabinet door 17 is rotatably connected to the cabinet body 1 via a hinge shaft. The cabinet door 17 is used to open or close the power cavity 11 and the power distribution cavity 12.

[0104] Since the AC power distribution device 3 requires an external power supply 02, it includes an input terminal 33 connected to the input terminal of the AC switching device 31. The input terminal 33 is used to connect to the power supply 02 via a cable 03. The input terminal 33, the AC switching device 31, the protection device 32, and the DC power distribution device 4 are all located in the power distribution cavity 12. The input terminal 33 is positioned facing the cabinet door 17 (cabinet door 17 in the closed state). Furthermore, the power conversion device 2 can also be removed from the power cavity 11. For example, if the power conversion device 2 includes multiple power modules 21 (e.g., AC-DC modules and DC-DC modules), each power module 21 (with a handle) can be removed from the power cavity 11 by pulling it out. That is, each power module 21 can be pulled out or moved towards or away from the cabinet door 17 (cabinet door 17 in the closed state). After opening the cabinet door 17, personnel can pull out and remove one or more power modules 21 from the cabinet 1.

[0105] When personnel need to disassemble the power conversion device 2 for inspection or maintenance, they can determine whether the power conversion device 2 is powered by observing whether the cable 03 is connected to the input terminal 33. Based on the connection status of the cable 03, they can decide whether to directly disassemble or maintain the power conversion device 2, thus reducing safety hazards during the operation.

[0106] In some examples, referring to Figure 12, after opening the cabinet door 17 of the cabinet 1, the power conversion device 2 in the power cavity 11 is exposed, and the input terminals 33 of the AC power distribution device 3 and the output terminals (e.g., wiring terminals) of the DC power distribution device 4 in the power distribution cavity 12 are exposed. Since each functional cavity (e.g., the power cavity 11 and the power distribution cavity 12) is laid out flat inside the cabinet 1, after opening the cabinet door of the cabinet 1, all functional cavities (including the power cavity 11 and the power distribution cavity 12) are within the visible range of personnel. Furthermore, each functional cavity is clearly divided, and the interior of the cabinet 1 is clean. After opening the cabinet door 17 of the cabinet 1, the power conversion device 2, the input terminals 33 of the AC power distribution device 3, and the output terminals of the DC power distribution device 4 are all exposed, allowing maintenance of the internal devices to be performed with only one side of the cabinet 1 open, reducing the difficulty of later maintenance of the charging equipment 01.

[0107] Furthermore, in the example shown in Figure 12, the power conversion device 2 is located above the AC power distribution device 3 and the DC power distribution device 4. Since the heat of the power conversion device 2 will be transferred upward, placing the power conversion device 2 above the AC power distribution device 3 and the DC power distribution device 4 reduces the possibility that the heat of the power conversion device 2 will affect the AC power distribution device 3 and the DC power distribution device 4.

[0108] Furthermore, referring to Figure 12, the power conversion device 2 includes multiple power modules 21. With the first direction being vertical and the third direction being horizontal, the multiple power modules 21 of the power conversion device 2 are arranged along the third direction (horizontal direction). The heat of each power module 21 is directly transferred upwards, preventing the heat from multiple power modules 21 from ultimately being transferred to a single power module 21 (for example, if the multiple power modules 21 are arranged vertically, the topmost power module 21 has a greater risk of overheating). In this way, the heat distribution of the power conversion device 2 is more uniform, the heat dissipation effect is better, and the risk of individual power modules 21 overheating is reduced.

[0109] In addition to natural cooling, liquid cooling can also be used to cool the power conversion device 2 in some examples. Figure 13 exemplarily shows a partial structure of another charging device 01. Referring to Figure 13, the charging device 01 also includes a cooling device 10 for dissipating heat from the power conversion device 2. The cooling device 10 is located outside the cabinet 1. For example, in the example shown in Figure 13, the cooling device 10 is fixed to the top of the cabinet 1, so that the cooling device 10 is located on the side of the power conversion device 2 away from the DC power distribution device 4. The layout shown in Figure 13 is advantageous for the installation of the cooling device 10. In addition, the proximity of the cooling device 10 to the power conversion device 2 also facilitates the connection of piping between the cooling device 10 and the power conversion device 2.

[0110] In the example shown in Figure 13, the charging device 01 also includes a protective shell 14, which is fixed to the cabinet 1 and covers the cooling device 10 to protect the cooling device 10.

[0111] Figure 14 illustrates an exemplary structure of a cooling device 10. Referring to Figure 14, the power conversion device 2 includes a liquid cooling channel 22, and the cooling device 10 is used to drive the cooling medium to flow within the liquid cooling channel 22. The cooling device 10 includes a first driving member 101 (e.g., a water pump) and a heat exchanger 102 (e.g., a plate heat exchanger). The heat exchanger 102 has a first heat exchange channel 1021, which communicates with the liquid cooling channel 22. Driven by the first driving member 101, the cooling medium (e.g., water) flows between the first heat exchange channel 1021 and the liquid cooling channel 22. Furthermore, referring to Figures 13 and 14, a fan 15 can also be provided on the protective housing 14. The fan 15 can dissipate heat from the heat exchanger 102, accelerating the cooling of the cooling medium within the heat exchanger 102.

[0112] Figure 15 illustrates the structure of another cooling device 10. Referring to Figure 15, the cooling device 10 includes a first drive 101 (e.g., a water pump), a second drive 103 (e.g., a water pump), a liquid storage tank 104, and a heat exchanger 102 (e.g., a plate heat exchanger). The heat exchanger 102 has a first heat exchange channel 1021 and a second heat exchange channel 1022. The first heat exchange channel 1021 is connected to a liquid cooling channel 22, and the second heat exchange channel 1022 is connected to the liquid storage tank 104. The liquid storage tank 104 stores cold liquid (e.g., water). Driven by the first drive 101, the cooling medium (e.g., water) flows between the first heat exchange channel 1021 and the liquid cooling channel 22. Driven by the second drive 103, the cold liquid flows between the second heat exchange channel 1022 and the liquid storage tank 104. The cooling medium in the first heat exchange channel 1021 can exchange heat with the cold liquid in the second heat exchange channel 1022 within the heat exchanger 102.

[0113] In some other examples, the cooling system shown in Figure 15 is still used; however, the cooling device 10 only includes the first drive element 101 and the heat exchanger 102 shown in Figure 15, excluding the second drive element 103 and the liquid storage tank 104. That is, in this example, only the first drive element 101 and the heat exchanger 102 are located inside the protective housing 14.

[0114] The liquid cooling channel 22 of the power conversion device 2 can be any suitable channel. For example, Figure 16 exemplarily shows a partial structure of the liquid cooling channel 22. Referring to Figure 16, when the power conversion device 2 includes multiple power modules 21, each power module 21 may include a housing 211, a circuit board 212, a power device 213, and a cooling plate 214. The circuit board 212, the power device 213, and the cooling plate 214 are all located inside the housing 211. The power device 213 is fixed on the circuit board 212, and the cooling plate 214 is connected to the power device 213. A cooling channel 2141 is formed within the cooling plate 214. The housing 211 is provided with a medium inlet 2111 and a medium outlet 2112, wherein both the medium inlet 2111 and the medium outlet 2112 are in communication with the cooling channel 2141. The liquid cooling channel 22 includes the cooling channel 2141 of each power module 21, or in other words, all cooling channels 2141 constitute at least a portion of the liquid cooling channel 22.

[0115] To enable the cooling medium to circulate within the liquid cooling channel 22, the charging device 01 also includes a cooling pipe 20, as illustrated in Figure 17. Referring to Figure 17, the cooling pipe 20 includes a first main pipe 201, a plurality of first branch pipes 202, a second main pipe 203, and a plurality of second branch pipes 204. The plurality of first branch pipes 202 are all connected to the first main pipe 201, and the plurality of second branch pipes 204 are all connected to the second main pipe 203. Each first branch pipe 202 is connected to a medium inlet 2111 of a power module 21, and each second branch pipe 204 is connected to a medium outlet 2112 of a power module 21. The cooling medium flowing in from the first main pipe 201 can flow into the liquid cooling channel 22 (see Figure 15 for an auxiliary reference) through the plurality of first branch pipes 202, and then flow from the liquid cooling channel 22 into the second main pipe 203 through the plurality of second branch pipes 204. As long as the first main pipe 201 and the second main pipe 203 are both connected to the first heat exchange channel 1021 (refer to Figure 15 for the first heat exchange channel 1021), the cooling medium can be circulated, thus achieving circulated heat dissipation for the power conversion device 2.

[0116] Figure 18 illustrates a partial structure of another charging device 01. Referring to Figure 18, the power conversion device 2 includes multiple power modules 21 arranged along a third direction. The cooling device 10 is located on the side of the multiple power modules 21 in the third direction, that is, the cooling device 10 is fixed to the side panel of the cabinet 1 on the third-direction upward side. Figure 19 illustrates another cooling pipe 20. Referring to Figures 18 and 19, both the first main pipe 201 and the second main pipe 203 extend along a third direction. The cooling device 10 located on the third-direction upward side of the power conversion device 2 facilitates connection between the first main pipe 201 and the second main pipe 203. Compared with the cooling pipe 20 in the example of Figure 17, it can be intuitively seen that the first main pipe 201 and the second main pipe 203 in the example of Figure 19 can be connected to the cooling device 10 without significant bending, which also reduces the length of the first main pipe 201 and the second main pipe 203.

[0117] In the example where the charging device 02 includes a cooling device 10, there may be one or multiple cooling devices 10. In the case where there are multiple cooling devices 10, the multiple cooling devices 10 may be arranged along a third direction.

[0118] Figure 20 illustrates a partial structure of another charging device 01. Referring to Figure 20, the AC power distribution device 3 (e.g., including AC switching device 31 and protection device 32) and the DC power distribution device 4 are both located on the same side of the power conversion device 2 in the first direction. The AC power distribution device 3 and the DC power distribution device 4 are distributed along a third direction. However, in the example shown in Figure 20, the third direction is parallel to the vertical direction, and the first direction and the second direction are two horizontal directions that are perpendicular to each other.

[0119] Furthermore, in the example shown in Figure 20, the input terminal and the output terminal of the power conversion device 2 are distributed along a third direction, and in the third direction, the AC power distribution device 3 is closer to the input terminal of the power conversion device 2 than the DC power distribution device 4, and the DC power distribution device 4 is closer to the output terminal of the power conversion device 2 than the AC power distribution device 3.

[0120] Figure 21 exemplarily illustrates a partial structure of another charging device 01. Referring to Figure 21, an AC power distribution device 3 (e.g., including AC switching device 31 and protection device 32) is located to the side of the power conversion device 2 in a first direction, and a DC power distribution device 4 is located to the side of the power conversion device 2 in a second direction. Both the first and second directions are perpendicular to the third direction. In the example shown in Figure 21, the third direction is parallel to the vertical direction, and the first and second directions are two mutually perpendicular horizontal directions. Referring to Figure 21, the power conversion device 2 includes a plurality of power modules 21, which are divided into a first power module group 2101 and a second power module group 2102. The first power module group 2101 includes a plurality of AC-DC modules (power modules 21), and the second power module group 2102 includes a plurality of DC-DC modules (power modules 21). The first power module group 2101 is located on the third-direction side of the second power module group 2102. For example, the first power module group 2101 is located below the second power module group 2102, that is, all the AC-DC modules of the first power module group 2101 are located below all the DC-DC modules of the second power module group 2102. The DC power distribution device 4 is located to the side of the second power module group 2102 in the second direction, and there is a large space between the bottom surface of the DC power distribution device 4 and the bottom of the cabinet 1.

[0121] Referring to Figure 21, the cabinet 1 also has a through opening 16. In the vertical direction, the bottom surface of the DC power distribution device 4 is higher than the through opening 16. The wire 5 passes through the through opening 16. A part of the wire 5 is located inside the cabinet 1 and is connected to the DC power distribution device 4 (for example, connected to the output terminal of the DC power distribution device 4). The other part of the wire 5 is located outside the cabinet 1 for connecting the charging connector 6. The space between the DC power distribution device 4 and the bottom of the cabinet 1 can accommodate the wire 5.

[0122] In some other examples, the power conversion device 2 includes multiple AC-DC modules (excluding DC-DC modules), and the DC power distribution device 4 can also be installed at a higher position inside the cabinet 1, so that there is space between the DC power distribution device 4 and the bottom of the cabinet 1 to accommodate the wires 5.

[0123] By placing the DC power distribution device 4 and the AC power distribution device 3 on different sides of the power conversion device 2, there can be extra space on the side of the power conversion device 2 where the DC power distribution device 4 is located. This space can be used to install the wires 5 and can also serve as an operating space for workers to install and maintain the wires 5.

[0124] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging device, characterized by, include: Cabinet; A power conversion device is located inside the cabinet. The power conversion device includes multiple power modules, which are used to convert the input current into power and output it. An AC power distribution device and a power conversion device are arranged along a first direction. The AC power distribution device includes an AC switching device, the input terminal of which is electrically connected to a power source, and the output terminal of which is electrically connected to the input terminal of the power conversion device. A DC power distribution device is electrically connected to the output terminal of the power conversion device. The DC power distribution device is used to distribute the power output by the power conversion device to at least one charging connector. The DC power distribution device and the power conversion device are arranged along a first direction, or the DC power distribution device and the power conversion device are arranged along a second direction, the second direction being perpendicular to the first direction.

2. The charging device according to claim 1, characterized in that, The length of the power conversion device in the first direction and the length of the power conversion device in the second direction are both less than the length of the power conversion device in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; The AC power distribution device and the DC power distribution device are both located on the same side of the power conversion device in the first direction, and the AC power distribution device is located on the side of the DC power distribution device in the third direction.

3. The charging device according to claim 1 or 2, characterized in that, The plurality of power modules are arranged along the third direction, with the first direction, the second direction, and the third direction being perpendicular to each other. The plurality of power modules are at least divided into a first power module group and a second power module group. The first power module group includes at least one AC-DC module, and the second power module group includes at least one DC-DC module. The second power module group is located to the side of the first power module group in the third direction. The output terminal of the at least one AC-DC module in the first power module group is electrically connected to the input terminal of the at least one DC-DC module in the second power module group. The input terminal of at least one AC-DC module in the first power module group is electrically connected to the output terminal of the AC switching device, and the output terminal of at least one DC-DC module in the second power module group is electrically connected to the input terminal of the DC power distribution device. The AC power distribution device is located to the side of the first power module group in the first direction, and the DC power distribution device is located to the side of the second power module group in the first direction.

4. The charging device according to claim 1 or 2, characterized in that, The plurality of power modules are arranged along a third direction, with the first direction, the second direction and the third direction being perpendicular to each other. The plurality of power modules are at least divided into a first power module group, a second power module group and a third power module group, with the first power module group located between the second power module group and the third power module group. The power conversion device further includes a bus. The first power module group includes at least one AC-DC module. The second power module group and the third power module group each include at least one DC-DC module. The output terminal of the at least one AC-DC module of the first power module group is electrically connected to the input terminal of the at least one DC-DC module of the second power module group and the input terminal of the at least one DC-DC module of the third power module group through the bus.

5. The charging device according to claim 4, characterized in that, The DC power distribution device includes a first part and a second part arranged along the third direction, and the AC power distribution device is located between the first part and the second part; The first part and the second power module group are located on the same side of the first power module group in the third direction, and the first part is electrically connected to the output terminal of at least one DC-DC module of the second power module group; The second part and the third power module group are located on the same side of the first power module group in the third direction, and the second part is electrically connected to the output terminal of at least one DC-DC module of the third power module group.

6. The charging device according to any one of claims 3-5, characterized in that, The charging device further includes a first controller and a second controller, both of which are located inside the cabinet. The first controller is electrically connected to at least one AC-DC module of the first power module group, and the second controller is electrically connected to at least one DC-DC module of the second power module group. Both the first controller and the second controller are located between the first power module group and the second power module group.

7. The charging device according to any one of claims 1 to 6, characterized in that, The AC power distribution device includes an input terminal, which is electrically connected to the input terminal of the AC switching device, and the input terminal is used to electrically connect to the power source via a cable; The cabinet includes a power cavity and a distribution cavity that are separated from each other. The power cavity and the distribution cavity are arranged along the first direction. The power conversion device is located in the power cavity, and the input terminal and the AC switching device are both located in the distribution cavity. The charging device also includes a cabinet door, which is connected to the cabinet body and can move relative to the cabinet body. The cabinet door is used to open or block the power cavity and the power distribution cavity. The input terminals face the cabinet door, and the plurality of power modules can move in a direction that is close to or away from the cabinet door.

8. The charging device according to any one of claims 1-7, characterized in that, The first direction is parallel to the vertical direction, and the power conversion device includes multiple power modules arranged along a third direction, with the first direction, the second direction, and the third direction being perpendicular to each other.

9. The charging apparatus according to claim 1, characterized by, The charging device also includes a wire, a portion of which is located inside the cabinet and electrically connected to the DC power distribution device, and another portion of which is located outside the cabinet and is used to electrically connect to the charging connector. The cabinet has a through opening through which the wire passes. The DC power distribution device and the power conversion device are arranged along the second direction. Both the first direction and the second direction are perpendicular to the third direction, which is parallel to the vertical direction. In the third direction, the bottom surface of the DC power distribution device is higher than the through opening, and there is a space between the DC power distribution device and the bottom of the cabinet to accommodate the wires.

10. The charging device according to any one of claims 1-9, characterized by, The charging device also includes a cooling device located outside the cabinet, and each power module includes a cooling channel, the cooling device being used to drive a cooling medium to flow within the cooling channel; The cooling device is located on the side of the power conversion device that is away from the DC power distribution device; Alternatively, the plurality of power modules are arranged along a third direction, and the charging device further includes a cooling pipe. The cooling channel of each power module is connected to the cooling device through the cooling pipe. The cooling pipe extends along the third direction, and the cooling device is located to the side of the plurality of power modules in the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

Images