charging equipment

Abstract

This application provides a charging device, relating to the field of energy technology. The charging device includes a power distribution device, multiple power modules, multiple bus groups, and multiple charging connectors. Each power module converts input electrical energy into power and outputs it. The power distribution device includes multiple terminal groups, each used for current input and output. The multiple bus groups are connected one-to-one with the multiple terminal groups, and each terminal group is electrically connected to at least one power module through its corresponding bus group. Each charging connector is electrically connected to at least one bus group. The power distribution device distributes the electrical energy output from at least one of the multiple power modules to at least one of the multiple charging connectors through the multiple bus groups.

Description

Charging equipment

[0001] This application claims priority to Chinese patent application No. 202422972896.1, filed with the State Intellectual Property Office of China on November 29, 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 the charging business, the power density and cost of charging equipment have become one of the core competitive advantages in the industry. Power distribution devices in charging equipment can rationally allocate the power output from the power conversion device, ensuring that the power output is distributed to various charging locations (e.g., charging parking spaces), thereby improving system power utilization.

[0004] In related technologies, power distribution devices have independent power input ports and power output ports. The current output by the power conversion device needs to be sent from the power input port to the power distribution device for power distribution, and then output from the power output port. Adopting this approach increases the number of ports in the power distribution device. Both the power input and power output ports require connection to busbars (e.g., copper busbars), resulting in numerous busbars within the cabinet, occupying a significant amount of internal space. This leads to low space utilization within the cabinet, low power density in the charging equipment cabinet, and increased costs due to the large amount of copper busbars used.

[0005] Utility Model Content

[0006] This application provides a charging device that reduces the amount of busbars used, increases the power density of the charging device, and reduces the manufacturing cost of the charging device.

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

[0008] This application provides a charging device, which includes a power distribution device, multiple power modules, multiple bus groups, and multiple charging connectors. Each power module is used to convert input electrical energy into power and output it. The power distribution device includes multiple terminal groups, each terminal group being used for current input and output. The multiple bus groups are connected one-to-one with the multiple terminal groups, and each terminal group is electrically connected to at least one power module through a corresponding bus group. Each charging connector is electrically connected to at least one bus group. The power distribution device is used to distribute the electrical energy output from at least one of the multiple power modules to at least one of the multiple charging connectors through the multiple bus groups.

[0009] Each terminal group of the power distribution device can supply both current input and current output. That is, the power distribution device shares a terminal group for both current input and current output. Current input and output can be achieved simply by connecting a bus group to the shared terminal group, reducing the need for multiple bus groups. When the terminal group of the power distribution device can function as both a power input and output terminal group, the power conversion device (including multiple power modules), the power distribution device, and multiple charging connectors can share multiple bus groups. For example, in one operating condition, the current output from the power conversion device can be transmitted to the corresponding charging connector through the corresponding bus group. In this condition, the power output from the power conversion device does not undergo power distribution within the power distribution device, reducing the heat generated by the power distribution device. In another operating condition, the current output from the power conversion device can also be transmitted to the power distribution device through the corresponding bus group for power distribution. For example, the current input from multiple power modules to the power distribution device can be distributed to one bus group, and then the current can be transmitted to the corresponding charging connector through this bus group, allowing the charging connector to access the output power of multiple power modules. This approach enables electrical connections between power conversion devices, power distribution devices, and multiple charging connectors (interconnected via shared busbar groups), reduces the number of busbar groups required, lowers the manufacturing cost of the charging equipment, and, because multiple busbar groups are shared, reduces the space occupied inside the charging equipment cabinet, thereby increasing the power density of the charging equipment.

[0010] In one embodiment of this application, each terminal group includes two terminals, and each bus group includes a positive bus and a negative bus. The two terminals of each terminal group are electrically connected to the positive bus and the negative bus of the corresponding bus group, respectively. In each bus group, the positive bus is electrically connected to the positive output terminal of at least one power module, and the negative bus is electrically connected to the negative output terminal of at least one power module. The positive input terminal of each charging connector is electrically connected to the bus of at least one bus group that is electrically connected to the positive output terminal of the power module, and the negative input terminal of each charging connector is electrically connected to the bus of at least one bus group that is electrically connected to the negative output terminal of the power module.

[0011] Each terminal group has two terminals, which can be a positive terminal and a negative terminal. The positive output terminal of the power module is connected to the positive terminal in the terminal group via a positive busbar in a busbar group, and the negative output terminal of the power module is connected to the negative terminal in the terminal group via a negative busbar in a busbar group. Similarly, through the connection of the busbar groups, the positive input terminal of the charging connector is electrically connected to the positive output terminal of the power module, and the negative input terminal of the charging connector is electrically connected to the negative output terminal of the power module. In this way, electrical connections can be achieved between the power conversion device, the power distribution device, and multiple charging connectors.

[0012] In one embodiment of this application, multiple bus groups are connected one-to-one with multiple power modules. The two terminals of each terminal group are electrically connected to the positive and negative output terminals of a power module through the positive and negative bus of the corresponding bus group, respectively. The multiple charging connectors include a first charging connector. The positive input terminal of the first charging connector is electrically connected to the positive bus of the multiple bus groups, and the negative input terminal of the first charging connector is electrically connected to the negative bus of the multiple bus groups.

[0013] Even without power distribution via a power distribution device, the first charging connector can directly draw power from multiple power modules to meet the charging needs of the device being charged. Furthermore, each power module is connected to a corresponding terminal group, allowing the charging connector to access the power of one or more specific power modules through the power distribution device, making power allocation more flexible.

[0014] In one embodiment of this application, in at least one busbar group, the positive busbar includes a first main busbar and a plurality of first branch buses connected to the first main busbar, and the negative busbar includes a second main busbar and a plurality of second branch buses connected to the second main busbar; the first main busbar is electrically connected to one terminal of a corresponding terminal group, and the second main busbar is electrically connected to another terminal of the corresponding terminal group; the positive output terminals of the plurality of power modules are each electrically connected to one of the first branch buses, and the negative output terminals of the plurality of power modules are each electrically connected to one of the second branch buses.

[0015] The first and second main busbars form a main circuit group, and each first branch busbar and each second branch busbar form a branch circuit group. In other words, at least one busbar group includes a main circuit group and multiple branch circuit groups. The current from multiple power modules can be drawn into the main circuit group through multiple branch circuit groups, and then connected to the corresponding terminal groups through the main circuit group. In this way, the current from multiple power modules can be drawn into the main circuit group and input to the power distribution device. The charging connector can then utilize the power from multiple power modules connected to a single busbar group through the power distribution device.

[0016] In one embodiment of this application, the plurality of charging connectors includes a second charging connector, the positive input terminal of the second charging connector being electrically connected to the first main bus, and the negative input terminal of the second charging connector being electrically connected to the second main bus.

[0017] The first main bus and the second main bus form the main bus group. Since the second charging connector is directly electrically connected to the main bus group, the power output by the power conversion device can directly access the power of multiple power modules to meet the charging needs of the device to be charged, without the power distribution device distributing the power.

[0018] In one embodiment of this application, the charging device further includes wires, each positive busbar and each negative busbar is a metal busbar, and each charging connector is electrically connected to the positive busbar and negative busbar of at least one busbar group via wires.

[0019] The positive and negative busbars, employing a metal busbar structure, exhibit superior conductivity, load-bearing capacity, and stability, while also facilitating their installation and maintenance. Current from each busbar group can be transferred to the corresponding charging connector via conductors; for example, the conductors could be the charging gun wires (charging connectors). These conductors transmit the current output from the power conversion device to the busbar group, which then charges the device being charged. The use of conductors to facilitate connection between the power distribution device and the charging connectors reduces the length of the busbars (positive and negative) in the charging equipment, saving costs and simplifying installation and maintenance.

[0020] In one embodiment of this application, the power distribution device further includes a circuit board and a plurality of switching assemblies. The plurality of switching assemblies and the plurality of terminal groups are all fixed on the circuit board. Each switching assembly is electrically connected to at least two terminal groups, and each switching assembly is used to control the on / off state of the circuit between at least two terminal groups.

[0021] Integrating multiple switching components (e.g., relays or contactors) and multiple terminal groups onto a circuit board increases the integration of the power distribution device. Terminal groups connect to switching components; when bus groups are connected to terminal groups, the current input or output through the bus group can be controlled by the corresponding switching component to control the circuit's on / off state. For example, by controlling the switching component, the circuit between two terminal groups connected to that switching component can be made conductive, thereby distributing the current from one bus group to the other, thus achieving power distribution.

[0022] In one embodiment of this application, the charging device further includes a first circuit breaking device disposed on a circuit board. The first terminal group includes a first terminal group, and the multiple switch assemblies include a first switch assembly. The first terminal group is electrically connected to the first switch assembly through the first circuit breaking device. The first circuit breaking device is used to break the circuit between the first terminal group and the first switch assembly.

[0023] The first circuit disconnecting device can disconnect the circuit between the first terminal group and the first switching assembly. In the event of a fault in the first switching assembly, the first circuit disconnecting device can break the circuit between the first terminal group and the first switching assembly, while the busbar connected to the first terminal group can still maintain the circuit between the corresponding power module and the corresponding charging connector. Even in scenarios where the power distribution device requires maintenance due to a fault, the charging connector can still maintain low-power charging, improving the resilience of the charging system and increasing the operating efficiency of the charging station.

[0024] In one embodiment of this application, the charging device includes a first circuit breaking device, multiple terminal groups including a second terminal group, multiple charging connectors including a third charging connector, multiple bus groups including a first bus group, and multiple power modules including a first power module; the first bus group includes a first part and a second part, the first part is electrically connected to the second terminal group, the second part is electrically connected to the first power module and the third charging connector, and the first part and the second part are electrically connected through the first circuit breaking device, which is used to break the circuit between the first part and the second part.

[0025] In scenarios where the power distribution device malfunctions and requires maintenance, the first circuit disconnection device will not affect the circuit between the first power module and the third charging connector. Furthermore, the first circuit disconnection device can disconnect the circuit between the first power module and the second terminal group, so that the power of the first power module is not distributed through the power distribution device. The third charging connector can still directly access the power of the first power module through the corresponding bus group, so that the third charging connector can still maintain low-power charging and improve the operating efficiency of the charging station.

[0026] In one embodiment of this application, the charging device includes a second circuit disconnection device, a plurality of terminal groups including a third terminal group, a plurality of charging connectors including a fourth charging connector, a plurality of bus groups including a second bus group, and a plurality of power modules including a second power module; the second bus group includes a third part and a fourth part, the third part is electrically connected to the fourth charging connector, the fourth part is electrically connected to the third terminal group and the second power module, and the third part and the fourth part are electrically connected through the second circuit disconnection device, which is used to disconnect the circuit between the third part and the fourth part.

[0027] In the event of a failure in the second power module, the second circuit disconnector will not affect the circuit between the second power module and the third terminal group. Furthermore, the second circuit disconnector can disconnect the circuit between the fourth charging connector and the second power module, reducing the likelihood of charging accidents. Alternatively, in the event of a failure in the fourth charging connector, the second circuit disconnector can also disconnect the circuit between the fourth charging connector and the second power module. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the overall structure of a charging device provided in an embodiment of this application;

[0029] Figure 2 is a schematic diagram of the overall structure of another charging device provided in an embodiment of this application;

[0030] Figure 3 is a topology diagram of a charging device according to the relevant technology of this application;

[0031] Figure 4 is a first working condition diagram of a charging device according to the relevant technology of this application;

[0032] Figure 5 is a second operating condition diagram of a charging device according to the relevant technology of this application;

[0033] Figure 6 is a topology diagram of a charging device provided in an embodiment of this application;

[0034] Figure 7 is a first operating condition diagram of a charging device provided in an embodiment of this application;

[0035] Figure 8 is a second operating condition diagram of a charging device provided in an embodiment of this application;

[0036] Figure 9 is a topology diagram of another charging device provided in an embodiment of this application;

[0037] Figure 10 is a first operating condition diagram of another charging device provided in an embodiment of this application;

[0038] Figure 11 is a second operating condition diagram of another charging device provided in an embodiment of this application;

[0039] Figure 12 is a schematic diagram of a power distribution device provided in an embodiment of this application;

[0040] Figure 13 is a topology diagram of another charging device provided in an embodiment of this application;

[0041] Figure 14 is a topology diagram of another charging device provided in an embodiment of this application;

[0042] Figure 15 is a schematic diagram of a busbar assembly provided in an embodiment of this application;

[0043] Figure 16 is a schematic diagram of another busbar group provided in an embodiment of this application;

[0044] Figure 17 is a schematic diagram of another busbar assembly provided in an embodiment of this application;

[0045] Figure 18 is a schematic diagram showing the location of a first circuit breaking device provided in an embodiment of this application;

[0046] Figure 19 is a schematic diagram showing the location of another first circuit breaking device provided in an embodiment of this application;

[0047] Figure 20 is a schematic diagram of the structure of a first circuit breaking device provided in an embodiment of this application;

[0048] Figure 21 is a schematic diagram of another first circuit breaking device provided in an embodiment of this application;

[0049] Figure 22 is a schematic diagram showing the location of a second circuit breaking device provided in an embodiment of this application;

[0050] Figure 23 is a schematic diagram of a second circuit breaking device provided in an embodiment of this application;

[0051] Figure 24 is a schematic diagram showing the location of another second circuit breaking device provided in an embodiment of this application.

[0052] Reference numerals: 100-Charging equipment; 1-Equipment cabinet; 2-Charging connector; 21-First charging connector; 22-Second charging connector; 23-Third charging connector; 24-Fourth charging connector; 3-Charging host; 4-Terminal cabinet; 5-Wire; 51-First section; 52-Second section; 53-Adapter; 6-Power conversion device; 61-Power module; 611-First power module; 612-Second power module; 7-Power distribution device; 701-Power input port; 702-Power output port; 71-Terminal group; 710-Terminal; 711-First terminal group; 712-Second terminal group; 713-Third terminal group; 72-Circuit board; 73-Switch assembly; 731-First contact; 732-Second contact; 733-Device Component housing; 7301-First switch assembly; 7302-Second switch assembly; 8-Bus group; 801-Positive busbar; 802-Negative busbar; 811-First main busbar; 812-First branch busbar; 813-Second main busbar; 814-Second branch busbar; 821-First busbar group; 8211-First part; 8212-Second part; 822-Second busbar group; 8221-Third part; 8222-Fourth part; 91-First circuit disconnecting device; 911-First disconnecting device; 92-Second circuit disconnecting device; 921-Second disconnecting device. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] In this application, unless otherwise expressly stated and limited, "multiple" means two or more.

[0056] 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.

[0057] 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.

[0058] This application provides a charging device 100, which can be a charging pile, such as an integrated charging pile. FIG1 exemplarily illustrates the structure of a charging device 100 (integrated charging pile). Referring to FIG1, the charging device 100 includes a device cabinet 1 and multiple charging connectors 2 (e.g., charging guns). Alternatively, the charging device 100 can also be a split-type charging pile. FIG2 exemplarily illustrates the structure of another charging device 100 (split-type charging pile). Referring to FIG2, the charging device 100 includes a charging host 3 and multiple charging terminals. Each charging terminal is electrically connected to the charging host 3, and each charging terminal includes a terminal cabinet 4 and at least one charging connector 2 (e.g., a charging gun).

[0059] Furthermore, referring to Figures 1 and 2, the charging device 100 also includes wires 5, a power conversion device 6, and a power distribution device 7. The power conversion device 6 converts alternating current (AC) to direct current (DC); that is, the input terminal of the power conversion device 6 receives AC power, and the output terminal outputs DC power. The power distribution device 7 is connected to the output terminal of the power conversion device 6 and is used to distribute the power output by the power conversion device 6. In the example where the charging device 100 is an integrated charging pile, referring to Figure 1, both the power conversion device 6 and the power distribution device 7 are housed within the equipment cabinet 1. Multiple wires 5 are provided, and the power distribution device 7 can be electrically connected to multiple charging connectors 2 via corresponding wires 5 (e.g., cables).

[0060] In an example where the charging device 100 includes a charging host 3 and multiple charging terminals, referring to Figure 2, a power conversion device 6 and a power distribution device 7 can be disposed within the charging host 3. Multiple wires 5 are provided, each wire 5 including a first segment 51 and a second segment 52. The first segment 51 of each wire 5 is electrically connected to the power distribution device 7 and the terminal cabinet 4, and the second segment 52 of each wire 5 is electrically connected to the terminal cabinet 4 and the charging connector 2. The host 3 converts AC mains power into DC power required by the device to be charged (e.g., an electric vehicle) through the power conversion device 6, and distributes the power to different charging terminals as needed.

[0061] The charging devices 100 shown in Figures 1 and 2 are merely examples of two types of charging devices 100 provided in this application and are not intended to limit the charging devices 100 of this application. For example, in some other examples, the charging terminal may include a terminal cabinet 4 and a plurality of charging connectors 2, each wire 5 includes a first segment 51 and a plurality of second segments 52, the first segment 51 of each wire 5 is electrically connected to the power distribution device 7 and the terminal cabinet 4, the plurality of second segments 52 of each wire 5 are electrically connected to the terminal cabinet 4, and the plurality of second segments 52 are respectively electrically connected to the corresponding charging connector 2.

[0062] In addition, in some examples, the charging device 100 also includes an AC power distribution device (including AC switching devices, surge protection devices, etc.), a heat dissipation module (including heat exchangers, fans, water pumps, etc.), and a monitoring module, etc., and this application does not impose specific limitations on this.

[0063] Figure 3 illustrates an exemplary topology of a charging setup 100 in the related art. Referring to Figure 3, the power conversion device 6 includes multiple power modules 61, each power module 61 being used to convert input electrical energy into power and output it. The multiple power modules 61 include AC-DC module a, AC-DC module b, AC-DC module c...AC-DC module f. Multiple charging connectors 2 include charging connector a, charging connector b, charging connector c...and charging connector f, with each charging connector 2 corresponding to one of the multiple power modules 61. The power distribution device 7 has multiple power input ports 701 and multiple power output ports 702. The multiple power input ports 701 are electrically connected to the multiple power modules 61 via copper busbars, and the multiple power output ports 702 are electrically connected to the multiple charging connectors 2 via copper busbars and cables.

[0064] Referring to Figure 3, both the power input port 701 and the power output port 702 need to be connected to copper busbars, resulting in a large number of copper busbars that occupy a lot of space inside the equipment cabinet 1 or the charging host 3. This leads to low space utilization inside the equipment cabinet 1 or the charging host 3, low power density of the charging device 100, and the large amount of copper busbars also increases the cost of the charging device 100.

[0065] Furthermore, Figure 4 exemplarily illustrates one operating condition of the charging device 100 in Figure 3. Referring to Figure 4, in this operating condition, the power output by the power module 61 is input into the power distribution device 7 through the power input port 701 and then output from the power output port 702, thereby outputting the power of the power module 61 to the corresponding charging connector 2. In this operating condition, the power distribution device 7 does not actually perform the function of power distribution; it only acts as an intermediate component to transfer the power of the power module 61 to the corresponding charging connector 2. However, during this transfer process, current flows through all the power input ports 701 and power output ports 702 of the power distribution device 7, and current flows through all the connectors, copper busbars, or cables inside the power distribution device 7. Therefore, the power distribution device 7 will continuously generate heat.

[0066] Figure 5 illustrates another operating condition of the charging device 100 in Figure 3. Referring to Figure 5, in this operating condition, in addition to the power output by AC-DC module a, the power distribution device 7 can distribute the power of AC-DC modules b, c, ... and f to charging connector a. The power output port 702 corresponding to charging connector a in the power distribution device 7 carries the current of all power modules 61, which not only places high demands on the specifications of the power output port 702, but also causes the power distribution device 7 to generate a large amount of heat.

[0067] To address the problems in related technologies, this application provides a charging device 100. Figure 6 is a topology diagram of a charging setup 100 provided in an embodiment of this application. Referring to Figure 6, the power conversion device 6 may include multiple power modules 61. For example, the multiple power modules 61 may include power module a, power module b, power module c...power module f (the figures in this application mostly use six power modules 61 as an example, but the number of power modules 61 in the figures is not a limitation imposed on this application). Each power module 61 among power module a, power module b, power module c...power module f can be an AC-DC module.

[0068] In some other examples, the multiple power modules 61 may include multiple AC-DC modules and multiple DC-DC modules. The output terminals of the multiple AC-DC modules are electrically connected to the input terminals of the multiple DC-DC modules via a DC bus, and the output terminals of the multiple DC-DC modules output DC power. That is, each power module 61 in power module a, power module b, power module c... power module f in Figure 6 can be a DC-DC module. In this case, the multiple AC-DC modules are omitted in Figure 6 (that is, the multiple AC-DC modules in this example are not shown in Figure 6).

[0069] Referring to Figure 6, the power distribution device 7 includes multiple terminal groups 71, each terminal group 71 being used for current input or output. That is, each terminal group 71 of the power distribution device 7 can be used for both current input (as a power input terminal group 71) and current output (as a power output terminal group 71). In other words, the current input and current output of the power distribution device 7 share the same terminal group 71.

[0070] In addition, the charging device 100 also includes a plurality of bus groups 8, which are connected one-to-one with a plurality of terminal groups 71. Each terminal group 71 is electrically connected to at least one power module 61 through a corresponding bus group 8. For example, in the example shown in FIG6, each terminal group 71 is electrically connected to one power module 61 through a corresponding bus group 8. In other examples (described below), each terminal group 71 is electrically connected to multiple power modules 61 through a corresponding bus group 8.

[0071] Each terminal group 71 is used for current input and output. For example, the power distribution device 7 can transmit the current input by power module a through bus group 8(a) to bus group 8(b). In this case, the terminal group 71 connected to bus group 8(a) serves as the terminal group 71 for current input, and the terminal group 71 connected to bus group 8(b) serves as the terminal group 71 for current output. As another example, the power distribution device 7 can also transmit the current input by power module a through bus group 8(a) and the current input by power module b through bus group 8(b) to bus group 8(c). In this case, both the terminal group 71 connected to bus group 8(a) and the terminal group 71 connected to bus group 8(b) serve as the terminal group 71 for current input, and the terminal group 71 connected to bus group 8(c) serves as the terminal group 71 for current output. For example, the power distribution device 7 can also transmit the current input from the power module a through the bus group 8(a) to the bus group 8(b) and the bus group 8(c). In this case, the terminal group 71 connected to the bus group 8(a) serves as the terminal group 71 for current input, and the terminal group 71 connected to the bus group 8(b) and the terminal group 71 connected to the bus group 8(c) both serve as the terminal group 71 for current output.

[0072] Referring to Figure 6, in one example, each terminal group 71 includes two terminals 710, for example, each terminal group 71 includes a terminal 710 (positive) and a terminal 710 (negative). Each bus group 8 includes a positive bus 801 and a negative bus 802. The two terminals 710 of each terminal group 71 are electrically connected to different buses (positive bus 801 and negative bus 802) in the corresponding bus group 8, respectively. In each bus group 8, the positive bus 801 is electrically connected to the positive output terminal of at least one power module 61, and the negative bus 802 is electrically connected to the negative output terminal of at least one power module 61. For example, in the example shown in Figure 6, in each bus group 8, the positive bus 801 is electrically connected to the positive output terminal of the corresponding power module 61, and the negative bus 802 is electrically connected to the negative output terminal of the corresponding power module 61. That is, the positive output terminal of the power module 61 is connected to the terminal 710 (positive terminal) in the corresponding terminal group 71 through the positive busbar 801 in the corresponding busbar group 8, and the negative output terminal of the power module 61 is connected to the terminal 710 (negative terminal) in the corresponding terminal group 71 through the negative busbar 802 in the corresponding busbar group 8.

[0073] Furthermore, each charging connector 2 is electrically connected to at least one bus group 8. For example, referring to FIG6, the positive input terminal of each charging connector 2 is electrically connected to the bus (positive bus 801) of at least one bus group 8 that is electrically connected to the positive output terminal of the power module 61, and the negative input terminal of each charging connector 2 is electrically connected to the bus (negative bus 802) of at least one bus group 8 that is electrically connected to the negative output terminal of the power module 61. The power distribution device 7 is used to distribute the electrical energy output from at least one of the multiple power modules 61 to at least one of the multiple charging connectors 2 through the multiple bus groups 8. For example, the electrical energy output by power module a is transmitted to the power distribution device 7 through bus group 8(a), and then the electrical energy is transmitted to bus group 8(b) through the power distribution device 7, and then the electrical energy is transmitted to the charging connector b electrically connected to the bus group 8(b) through the bus group 8(b), so that the power distribution device 7 distributes the electrical energy output by power module a to the charging connector b. For example, the electrical energy output from power module c and power module d is transmitted to power distribution device 7 via bus group 8(c) and bus group 8(d) respectively. Power distribution device 7 then collects the electrical energy onto bus group 8(e) and transmits it to charging connector e, which is electrically connected to bus group 8(e). This allows power distribution device 7 to distribute the electrical energy output from power module c and power module d to charging connector e. For another example, while power distribution device 7 distributes the electrical energy output from power module a to charging connector b, it can also distribute the electrical energy output from power module c to charging connector d.

[0074] In the example shown in Figure 6, multiple charging connectors 2 are configured one-to-one with multiple power modules 61. Each charging connector 2 is electrically connected to a bus group 8. Through the connection of multiple bus groups 8, the positive input terminal of the charging connector 2 is electrically connected to the positive output terminal of the power module 61, and the negative input terminal of the charging connector 2 is electrically connected to the negative output terminal of the power module 61.

[0075] For example, referring to Figure 6, multiple charging connectors 2 may include charging connector a, charging connector b, charging connector c...charging connector f (most of the figures in this application use six charging connectors 2 as an example, but the number of charging connectors 2 in the figures is not a limitation imposed on this application). The output terminal of power module a is electrically connected to the input terminal of the corresponding charging connector a, the output terminal of power module b is electrically connected to the input terminal of the corresponding charging connector b, and so on. Each charging connector 2 can directly access the power of its corresponding power module 61.

[0076] Figure 7 illustrates an exemplary operating condition of the charging device 100 in Figure 6. In this condition, charging connector a can directly draw power from power module a, charging connector b can directly draw power from power module b, and charging connector f can directly draw power from power module f. In this condition, the power distribution device 7 does not perform actual power distribution. Since power module 61 and the corresponding charging connector 2 are directly electrically connected via busbar group 8, the power output by power module 61 does not actually enter the power distribution device 7 but is directly input to the corresponding charging connector 2. Therefore, in this scenario, the power distribution device 7 is actually detached, resulting in minimal (or even no) heat generation.

[0077] Figure 8 illustrates an alternative operating condition of the charging device 100 in Figure 6. Referring to Figure 8, in this operating condition, in addition to the power output by power module a, the power distribution device 7 can distribute the power from power modules b, c, ... and charging connector f to charging connector a. Since the power output by power module a does not enter the power distribution device 7, the terminal group 71 in the power distribution device 7 used to output power to charging connector a only carries the current from the remaining power modules 61 (compared to the related technology in Figure 5, the current output by power module a is reduced). Under the extreme load of the terminal group 71, the specifications of the terminal group 71 are reduced, and the heat generated by the power distribution device 7 is also reduced.

[0078] When the terminal group 71 of the power distribution device 7 can be used as both a power input terminal group 71 and a power output terminal group 71, the power conversion device 6, the power distribution device 7, and the multiple charging connectors 2 can share multiple bus groups 8. In this way, the electrical connection between the power conversion device 6, the power distribution device 7, and the multiple charging connectors 2 (interconnected by sharing the bus group 8) can be realized, the number of bus groups 8 used can be reduced, the manufacturing cost of the charging equipment 100 can be reduced, and since multiple bus groups 8 are shared, the internal space occupied by the charging equipment 100 cabinet (equipment cabinet 1 or charging host 3) is reduced, and the power density of the charging equipment 100 is increased.

[0079] Under the design concept of the charging device 100 of this application, FIG9 shows an exemplary topology diagram of another charging device 100. Referring to FIG9, the two terminals 710 of each terminal group 71 are electrically connected to the positive bus 801 and the negative bus 802 of the corresponding bus group 8, respectively. In each bus group 8, the positive bus 801 is electrically connected to the positive output terminal of the corresponding power module 61 and the positive input terminal of the corresponding charging connector 2, and the negative bus 802 is electrically connected to the negative output terminal of the corresponding power module 61 and the negative input terminal of the corresponding charging connector 2.

[0080] Referring to Figure 9, multiple charging connectors 2 are configured one-to-one with multiple power modules 61. Furthermore, the output terminal of each power module 61 is electrically connected to the input terminal of the corresponding charging connector 2 through the corresponding bus group 8 (and wire 5). For example, the output terminal of power module a is electrically connected to the input terminal of the corresponding charging connector a, the output terminal of power module b is electrically connected to the input terminal of the corresponding charging connector b, and so on. Each charging connector 2 can directly access the power of its corresponding power module 61.

[0081] Figure 10 illustrates an exemplary operating condition of the charging device 100 in Figure 9. In this condition, charging connector a can directly draw power from power module a, and charging connector b can directly draw power from power module b. Under this condition, the power output by power module 61 does not actually enter the power distribution device 7, but is directly input to the corresponding charging connector 2. Power distribution device 7 does not perform any actual power distribution function, therefore generating less heat (or even no heat at all).

[0082] Figure 11 illustrates another operating condition of the charging device 100 in Figure 9. Referring to Figure 11, in addition to the power output by power module a, the power distribution device 7 can distribute the power from power modules b, c, ... and charging connector f to charging connector a. Since the power output by power module a does not actually enter the power distribution device 7, the terminal group 71 in the power distribution device 7 used to output power to charging connector a only carries the current from the remaining power modules 61. Under the extreme load of the terminal group 71, the specifications of the terminal group 71 are reduced, which also reduces the heat generated by the power distribution device 7.

[0083] The power distribution device 7 can adopt any suitable structure. Figure 12 shows an exemplary power distribution device 7. Referring to Figure 12, the power distribution device 7 also includes a circuit board 72 and a plurality of switch assemblies 73. The plurality of switch assemblies 73 and the plurality of terminal groups 71 are all fixed on the circuit board 72. Each switch assembly 73 is connected to at least two terminal groups 71. Each switch assembly 73 is used to control the on / off of the circuit between at least two terminal groups 71.

[0084] For example, referring to FIG12, each switch assembly 73 may include a first contact 731 and a second contact 732. In the two terminal groups 71 electrically connected to the switch assembly 73, the first contact 731 controls the conduction and disconnection of the circuit between the terminal 710 (positive) of one terminal group 71 and the terminal 710 (positive) of the other terminal group 71, and the second contact 732 controls the conduction and disconnection of the circuit between the terminal 710 (negative) of one terminal group 71 and the terminal 710 (negative) of the other terminal group 71. In other words, the first contact 731 is used to control the conduction or disconnection of the circuit between the two terminals 710 (positive), and the second contact 732 is used to control the conduction or disconnection of the circuit between the two terminals 710 (negative). When both the first contact 731 and the second contact 732 are in the on state, the circuit between the two terminal groups 71 electrically connected to the switch assembly 73 is connected; when both the first contact 731 and the second contact 732 are in the off state, the circuit between the two terminal groups 71 electrically connected to the switch assembly 73 is disconnected.

[0085] The power distribution device 7 integrates multiple switching components 73 and multiple terminal groups 71 on a circuit board 72, thereby increasing the integration level of the power distribution device 7. By controlling the switching component 73, the circuit between the two terminal groups 71 connected to the switching component 73 can be made conductive, thereby distributing the current on one bus group 8 to the other bus group 8, thus realizing the distribution of current.

[0086] In one example, referring to FIG12, the switch assembly 73 is a separate device (e.g., a relay, contactor, etc.) and includes a device housing 733, with the first contact 731 and the second contact 732 located within the device housing 733. In another example, the switch assembly 73 includes two independent devices, for example, the switch assembly 73 includes two relays or two contactors, with the first contact 731 and the second contact 732 belonging to different devices.

[0087] In the examples described above, each charging connector 2 is electrically connected to a corresponding power module 61. In other examples, at least one charging connector 2 is electrically connected to multiple power modules 61. For example, Figure 13 illustrates a partial topology of another charging device 100. Referring to Figure 13, multiple bus groups 8 are connected to multiple power modules 61 in a one-to-one correspondence. The two terminals 710 of each terminal group 71 are electrically connected to the positive and negative output terminals of the corresponding power module 61 through different buses (positive bus 801 and negative bus 802) in the corresponding bus group 8. That is, the terminal 710 (positive) of a terminal group 71 is connected to the positive output terminal of the corresponding power module 61 through the positive bus 801, and the terminal 710 (negative) of the terminal group 71 is connected to the negative output terminal of the corresponding power module 61 through the negative bus 802. The plurality of charging connectors 2 include a first charging connector 21, the positive input terminal of the first charging connector 21 being electrically connected to a plurality of buses (a plurality of positive buses 801) at the positive output terminal of the power module 61 corresponding to the plurality of bus groups 8, and the negative input terminal of the first charging connector 21 being electrically connected to a plurality of buses (a plurality of negative buses 802) at the negative output terminal of the power module 61 corresponding to the plurality of bus groups 8.

[0088] In other words, without the power being distributed by the power distribution device 7, the first charging connector 21 can directly access the power of multiple power modules 61. For example, in the example shown in Figure 13, the first charging connector 21 can directly access the power of power modules a, b, and c to meet the charging needs of the device to be charged. Furthermore, each power module 61 is connected one-to-one with a terminal group 71, allowing the charging connector 2 to access the power of one or more specific power modules 61 via the power distribution device 7, making the power access of the charging connector 2 more flexible.

[0089] Furthermore, in the aforementioned examples, each terminal group 71 is electrically connected to a power module 61 via a corresponding bus group 8. In other examples, each terminal group 71 is electrically connected to multiple power modules 61 via a corresponding bus group 8. For example, Figure 14 exemplarily shows a partial topology of another charging device 100. In at least one bus group 8, the positive bus 801 includes a first main bus 811 and multiple first branch buses 812, all of which are connected to the first main bus 811. The negative bus 802 includes a second main bus 813 and multiple second branch buses 814, all of which are connected to the second main bus 813. The first main bus 811 is electrically connected to the terminal 710 (positive) of the corresponding terminal group 71, and the second main bus 813 is electrically connected to the terminal 710 (negative) of the corresponding terminal group 71. Each of the positive output terminals of multiple power modules 61 is electrically connected to a first branch bus 812, and each of the negative output terminals of multiple power modules 61 is electrically connected to a second branch bus 814. It can be understood that the multiple first branch buses 812 and the multiple second branch buses 814 correspond one-to-one, and each corresponding first branch bus 812 and second branch bus 814 is connected to the same power module 61.

[0090] The first main bus 811 and the second main bus 813 can be considered as a main circuit group, and a first branch bus 812 and a second branch bus 814 corresponding to each other can be considered as a branch circuit group. Each branch circuit group is connected to a power module 61. The current of multiple power modules 61 can be collected into the main circuit group through multiple branch circuit groups, and then connected to the corresponding terminal group 71 through the main circuit group. In this way, the current of multiple power modules 61 can be collected into the main circuit group and input into the power distribution device 7, enabling the power distribution device 7 to distribute the power of multiple power modules 61 at one time.

[0091] Furthermore, in one example, referring to Figure 14, the plurality of charging connectors 2 include a second charging connector 22. The positive input terminal of the second charging connector 22 is electrically connected to the first main bus 811, and the negative input terminal of the second charging connector 22 is electrically connected to the second main bus 813. That is, even when the power output from the power conversion device 6 does not go through the power distribution device 7 for power distribution, the second charging connector 22 can directly draw power from the plurality of power modules 61 to meet the charging needs of the device to be charged.

[0092] In some other examples, the second charging connector 22 may also be electrically connected to a branch group (including a first branch bus 812 and a second branch bus 814). In such examples, a switching device may be added to the branch group so that the second charging connector 22 can directly draw power from only one power module 61.

[0093] Busbar group 8 can be of any suitable structure. For example, Figure 15 exemplarily illustrates the structure of one type of busbar group 8, where other busbar groups 8 are omitted, and only one type of busbar group 8 is shown as an example. This busbar group 8 includes a positive busbar 801 and a negative busbar 802. Each positive busbar 801 and each negative busbar 802 is an independent metal busbar (rigid busbar). For example, each positive busbar 801 is a copper busbar or an aluminum busbar, and each negative busbar 802 is a copper busbar or an aluminum busbar. In Figure 15, one end of each busbar (positive busbar 801 and negative busbar 802) of busbar group 8 is electrically connected to a power module 61 in the power conversion device 6, and the other end is electrically connected to the power distribution device 7. In Figure 15, the solid arrow 61 indicates the location of the power module 61, and only the output end of the power module 61 is shown.

[0094] Referring to Figure 15, the charging connector 2 is electrically connected to the bus group 8. The connection between the charging connector 2 and the corresponding bus group 8 can be achieved via a wire 5. For example, each charging connector 2 is electrically connected to its corresponding bus group 8 via a wire 5. The wire 5 can be the charging gun wire (charging connector 2). The wire 5 can include a positive wire and a negative wire. The positive wire is connected to the positive bus 801, and the negative wire is connected to the negative bus 802. This allows the positive input terminal of the charging connector 2 to be electrically connected to the positive output terminal of the power module 61 via the positive wire (and the positive bus 801), and the negative input terminal of the charging connector 2 to be electrically connected to the negative output terminal of the power module 61 via the negative wire (and the negative bus 802). In this way, the current output from the power conversion device 6 to the bus group 8 can be transmitted to the charging connector 2 via the wire 5, and the charging connector 2 can then charge the device to be charged. The use of conductor 5 to assist busbar group 8 for connection reduces the length of busbar group 8 in charging equipment 100, and also reduces the installation and maintenance difficulty of busbar group 8.

[0095] Figure 16 illustrates an exemplary structure of another busbar group 8, where other busbar groups 8 are omitted, and only one busbar group 8 is shown as an example. This busbar group 8 includes a positive busbar 801 and a negative busbar 802. Each positive busbar 801 and each negative busbar 802 is an independent metal busbar (rigid busbar). For example, each positive busbar 801 is a copper busbar or an aluminum busbar, and each negative busbar 802 is a copper busbar or an aluminum busbar. In Figure 16, one end of each busbar (positive busbar 801 and negative busbar 802) of the busbar group 8 is electrically connected to the power module 61 in the power conversion device 6, and the other end extends to the side of the power distribution device 7. The portions of the positive busbar 801 and negative busbar 802 located on the side of the power distribution device 7 are used to connect the wire 5. The wire 5 is electrically connected to the charging connector 2, thereby realizing the electrical connection between the busbar group 8 and the charging connector 2. In addition, both the positive busbar 801 and the negative busbar 802 are connected to the corresponding terminals 710 of the power distribution device 7 to realize the electrical connection between the busbar group 8 and the terminal group 71.

[0096] Figure 17 exemplarily illustrates the structure of another type of busbar group 8. Other busbar groups 8 are omitted in Figure 17; only one busbar group 8 is shown as an example. This busbar group 8 includes a positive busbar 801 and a negative busbar 802. The positive busbar 801 and the negative busbar 802 are two independent metal busbars (rigid busbars). For example, each positive busbar 801 is a copper busbar or an aluminum busbar, and each negative busbar 802 is a copper busbar or an aluminum busbar. In Figure 17, the positive busbar 801 and the negative busbar 802 of the busbar group 8 are electrically connected to the positive and negative output terminals of the corresponding power modules 61, respectively, realizing the connection between the busbar group 8 and the power modules 61. Furthermore, each of the positive busbar 801 and the negative busbar 802 is connected to a terminal 710, realizing the connection between the busbar group 8 and the terminal group 71. In this example, in addition to the conductor 5, the transition structure between the charging connector 2 and the bus group 8 is also provided with an additional transition bus 53 (metal bus). For example, in the example shown in Figure 17, each of the positive bus 801 and negative bus 802 of each bus group 8 is connected to a transition bus 53. The charging connector 2 is connected to the transition bus 53 through the conductor 5, thereby realizing the electrical connection between the bus group 8 and the charging connector 2.

[0097] In some other examples, at least one busbar (positive busbar 801 or negative busbar 802) may be a flexible busbar, for example, at least one busbar may be stranded metal wire or other types of wire.

[0098] In some examples, the power distribution device 7 further includes a first circuit breaking device 91. Figure 18 exemplarily shows the location of a first circuit breaking device 91. Referring to Figure 18, the first circuit breaking device 91 is disposed on a circuit board 72. The first circuit breaking device 91 can be a switching device (e.g., a relay, etc.) or a protective device (e.g., a fuse, etc.). Multiple terminal groups 71 include a first terminal group 711, and multiple switching assemblies 73 include a first switching assembly 7301. The first terminal group 711 is electrically connected to the first switching assembly 7301 via the first circuit breaking device 91, which is used to break the circuit between the first terminal group 711 and the first switching assembly 7301.

[0099] For example, the first circuit breaking device 91 includes two first breaking devices 911 (e.g., fuses), and the first switching assembly 7301 includes two first pins (not shown in the figures) and two second pins (not shown in the figures). A first contact 731 is used to break the circuit between the two first pins, and a second contact 732 is used to break the circuit between the two second pins. One first pin of the first switching assembly 7301 is connected to a terminal 710 of the first terminal group 711 via one of the first breaking devices 911 of the first circuit breaking device 91, and one second pin of the first switching assembly 7301 is connected to another terminal 710 of the first terminal group 711 via the other first breaking device 911 of the first circuit breaking device 91. After the first circuit breaking device 91 breaks the circuit, the circuit between the first terminal group 711 and the first switching assembly 7301 is disconnected.

[0100] In the event of a failure in the first switch assembly 7301, the first circuit disconnection device 91 disconnects the circuit between the first terminal group 711 and the first switch assembly 7301. The busbar group 8 connected to the first terminal group 711 can still maintain the circuit between the corresponding power module 61 and the corresponding charging connector 2. Even when the power distribution device 7 requires maintenance due to a failure, the charging connector 2 can still maintain low-power charging, enhancing the resilience of the charging system and improving the operating efficiency of the charging station.

[0101] In the example shown in Figure 18, the first switch assembly 7301 is connected to two terminal groups 71 via two first circuit disconnectors 91. Furthermore, each switch assembly 73 is connected to two terminal groups 71 via two first circuit disconnectors 91. For example, the multiple switch assemblies 73 also include a second switch assembly 7302, which is connected to the two terminal groups 71 via two first circuit disconnectors 91. Additionally, some of the first circuit disconnectors 91 are shared by multiple switch assemblies 73.

[0102] In some other examples, Figure 19 exemplarily shows the location of another first circuit disconnection device 91. Referring to Figure 19, the first circuit disconnection device 91 may be a switching device, a plurality of power modules 61 including a first power module 611, a plurality of terminal groups 71 including a second terminal group 712, and a plurality of charging connectors 2 including a third charging connector 23. The first circuit disconnection device 91 is used to disconnect the circuit between the first power module 611 and the second terminal group 712, and after the first circuit disconnection device 91 disconnects the circuit between the first power module 611 and the second terminal group 712, it does not affect the output power of the first power module 611 to the corresponding charging connector 2 (third charging connector 23).

[0103] In the topology of the charging device 100 shown in Figure 19, Figure 20 exemplarily shows a schematic diagram of the structure of a first circuit disconnection device 91. The structure of the bus group 8 in Figure 20 is similar to that of the bus group 8 in Figure 15, and will not be described again here. Among them, the multiple bus groups 8 include the first bus group 821. Other bus groups 8 are hidden in Figure 20, and only the first bus group 821 is shown. The two terminals 710 of the second terminal group 712 are electrically connected to the first power module 611 through the two buses (positive bus 801 and negative bus 802) of the first bus group 821. In Figure 20, the solid arrow 611 points to the position of the first power module 611 (Figure 20 only shows the output terminal of the first power module 611). In addition, the two buses (positive bus 801 and negative bus 802) of the first bus group 821 are also connected to the wires 5, which are electrically connected to the third charging connector 23.

[0104] Referring to Figure 20, a first circuit breaking device 91 is provided on the first busbar group 821, that is, the positive busbar 801 and the negative busbar 802 in the first busbar group 821 are cut off, and the first circuit breaking device 91 is located at the cut-off position. For example, the first busbar group 821 includes a first part 8211 and a second part 8212. The first part 8211 is electrically connected to the second terminal group 712, and the second part 8212 is electrically connected to the first power module 611 and the third charging connector 23 (connected to the third charging connector 23 via wire 5). The first part 8211 includes the portion of the two busbars (positive busbar 801 and negative busbar 802) of the first busbar group 821 that is connected to the second terminal group 712. The second part 8212 includes the portion of the two busbars (positive busbar 801 and negative busbar 802) of the first busbar group 821 that is connected to the first power module 611 and the third charging connector 23. The first part 8211 and the second part 8212 are electrically connected through the first circuit breaking device 91, so that the first circuit breaking device 91 can break the circuit between the first part 8211 and the second part 8212.

[0105] Referring to Figure 20, the first circuit disconnection device 91 is located between the connection position of the first busbar group 821 and the conductor 5 (e.g., position S1) and the connection position of the first busbar group 821 and the second terminal group 712 (e.g., position S2). In this way, after the first circuit disconnection device 91 disconnects the circuit between the first power module 611 and the second terminal group 712, it will not affect the output power of the first power module 611 to the corresponding charging connector 2 (third charging connector 23).

[0106] In the topology of the charging device 100 shown in Figure 19, Figure 21 exemplarily shows a schematic diagram of another first circuit breaking device 91. The structure of the bus group 8 in Figure 21 is similar to that of the bus group 8 in Figure 17, and will not be described again here. Similarly, other bus groups 8 are omitted in Figure 21, and only the first bus group 821 is shown. The first circuit breaking device 91 is disposed on the first bus group 821, that is, the positive bus 801 and the negative bus 802 in the first bus group 821 are cut off, and the first circuit breaking device 91 is disposed at the cut-off position. For example, the first bus group 821 includes a first part 8211 and a second part 8212. The first part 8211 is electrically connected to the second terminal group 712, and the second part 8212 is electrically connected to the first power module 611 and the third charging connector 23 (connected to the third charging connector 23 through the adapter 53 and the wire 5). The first part 8211 includes the portion of the two busbars (positive busbar 801 and negative busbar 802) of the first busbar group 821 that is connected to the second terminal group 712. The second part 8212 includes the portion of the two busbars (positive busbar 801 and negative busbar 802) of the first busbar group 821 that is connected to the first power module 611 and the third charging connector 23 (or adapter 53). The first part 8211 and the second part 8212 are electrically connected through the first circuit breaking device 91, so that the first circuit breaking device 91 can break the circuit between the first part 8211 and the second part 8212.

[0107] Referring to Figure 21, the first circuit disconnection device 91 is located between the connection position of the first bus group 821 and the second terminal group 712 (e.g., position S3) and the connection position of the first bus group 821 and the adapter 53 (e.g., position S4). In this way, after the first circuit disconnection device 91 disconnects the circuit between the first power module 611 and the second terminal group 712, it will not affect the output power of the first power module 611 to the corresponding charging connector 2 (third charging connector 23).

[0108] In some examples, the charging device 100 includes a second circuit disconnection device 92. Figure 22 exemplarily shows the location of the second circuit disconnection device 92. The plurality of terminal groups 71 include a third terminal group 713, the plurality of charging connectors 2 include a fourth charging connector 24, and the plurality of power modules 61 include a second power module 612. The second circuit disconnection device 92 is used to disconnect the circuit between the fourth charging connector 24 and the second power module 612. After the second circuit disconnection device 92 disconnects the circuit between the fourth charging connector 24 and the second power module 612, it does not affect the connection between the fourth charging connector 24 and the corresponding terminal group 71 (third terminal group 713).

[0109] With the above design, in the event of a failure in the second power module 612, the second circuit disconnecting device 92 can disconnect the circuit between the fourth charging connector 24 and the second power module 612, reducing the possibility of charging accidents. Alternatively, in the event of a failure in the fourth charging connector 24, the second circuit disconnecting device 92 can also disconnect the circuit between the fourth charging connector 24 and the second power module 612.

[0110] In the topology of the charging device 100 shown in Figure 22, Figure 23 illustrates an exemplary structural schematic diagram of a second circuit breaking device 92. The structure of the bus group 8 in Figure 23 is similar to that of the bus group 8 in Figure 16, and will not be described again here. Among them, the multiple bus groups 8 include a second bus group 822. Other bus groups 8 are omitted in Figure 23, and only the second bus group 822 is shown. The fourth charging connector 24 is electrically connected to the second power module 612 through the second bus group 822. The second bus group 822 is provided with the second circuit breaking device 92. The second circuit breaking device 92 can be a circuit breaker, a contactor, or an air switch, etc.

[0111] Referring to FIG23, the second bus group 822 includes a third part 8221 and a fourth part 8222. The third part 8221 is electrically connected to the fourth charging connector 24, and the fourth part 8222 is electrically connected to the third terminal group 713 and the second power module 612. The third part 8221 and the fourth part 8222 are electrically connected through the second circuit disconnecting device 92. The third part 8221 includes the portion of the two buses (positive bus 801 and negative bus 802) of the second bus group 822 that connects to the fourth charging connector 24. In the attached figure, the third part 8221 is labeled twice because the two parts contained in the third part 8221 are far apart, but in fact both parts are included in the third part 8221. The fourth part 8222 includes the portion of the two buses (positive bus 801 and negative bus 802) of the second bus group 822 that connects to the second power module 612 and the third terminal group 713. The third part 8221 and the fourth part 8222 are electrically connected through the second circuit disconnection device 92, which enables the second circuit disconnection device 92 to disconnect the circuit between the third part 8221 and the fourth part 8222.

[0112] In the example shown in Figure 23, the second circuit breaking device 92 includes two second breaking devices 921, which are two independent devices. Each second breaking device 921 can be a relay. Each second breaking device 921 is disposed on a bus (positive bus 801 or negative bus 802) of the second bus group 822. For example, both the positive bus 801 and the negative bus 802 in the second bus group 822 are cut off, and the two second breaking devices 921 of the second circuit breaking device 92 are respectively disposed at the cut-off positions of the positive bus 801 and the negative bus 802. The two second breaking devices 921 operate simultaneously, enabling the second circuit breaking device 92 to break the circuit between the third part 8221 and the fourth part 8222. In some other examples, the second circuit breaking device 92 can also be a single independent device. In such examples, the distance between the positive bus 801 and the negative bus 802 of the second bus group 822 is relatively short.

[0113] In other examples, the topology of the charging device 100 can take the form shown in FIG14. In this case, FIG24 exemplarily shows the location of another second circuit disconnection device 92. In the second bus group 822, the positive bus 801 includes a first main bus 811 and a plurality of first branch buses 812, all of which are connected to the first main bus 811; the negative bus 802 includes a second main bus 813 and a plurality of second branch buses 814, all of which are connected to the second main bus 813. Since the structure of the second bus group 822 in FIG24 is similar to that of the bus group 8 in FIG15, it will not be described again here. The second circuit disconnection device 92 is installed on a branch group consisting of a first branch bus 812 and a second branch bus 814. The first branch bus 812 of the branch group is connected to the positive output terminal of the second power module 612, and the second branch bus 814 of the branch group is connected to the negative output terminal of the second power module 612.

[0114] In the example shown in Figure 24, in the event of a failure of the second power module 612, the second circuit disconnecting device 92 can disconnect the circuit between the fourth charging connector 24 and the second power module 612, reducing the possibility of charging accidents. Furthermore, after the second circuit disconnecting device 92 disconnects the circuit between the fourth charging connector 24 and the second power module 612, it does not affect the power supplied to the fourth charging connector 24 by other power modules 61. The fourth charging connector 24 can still maintain low-power charging, improving the resilience of the charging system and increasing the operating efficiency of the charging station.

[0115] 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 scope of the technology 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 in that, include: Multiple power modules, each of which is used to convert the input electrical energy into power and output it; A power distribution device, the power distribution device comprising a plurality of terminal groups, each terminal group being used for current input and output; Multiple busbar groups are connected one-to-one with multiple terminal groups, and each terminal group is electrically connected to at least one power module through the corresponding busbar group. A plurality of charging connectors, each of the charging connectors being electrically connected to at least one of the bus groups, the power distribution device being used to distribute electrical energy output from at least one of the plurality of power modules to at least one of the plurality of charging connectors via the plurality of bus groups.

2. The charging device according to claim 1, characterized in that, Each terminal group includes two terminals, each bus group includes a positive bus and a negative bus, and the two terminals of each terminal group are electrically connected to the positive bus and the negative bus of the corresponding bus group, respectively. In each of the busbar groups, the positive busbar is electrically connected to the positive output terminal of at least one of the power modules, and the negative busbar is electrically connected to the negative output terminal of at least one of the power modules. The positive input terminal of each charging connector is electrically connected to the positive busbar of the at least one busbar group, and the negative input terminal of each charging connector is electrically connected to the negative busbar of the at least one busbar group.

3. The charging device according to claim 2, characterized in that, The plurality of busbar groups are connected one-to-one with the plurality of power modules. The two terminals of each terminal group are electrically connected to the positive output terminal and the negative output terminal of a power module respectively through the positive busbar and the negative busbar of the corresponding busbar group. The plurality of charging connectors includes a first charging connector, the positive input terminal of which is electrically connected to the positive busbar of the plurality of busbar groups, and the negative input terminal of which is electrically connected to the negative busbar of the plurality of busbar groups.

4. The charging device according to claim 2, characterized in that, In at least one of the busbar groups, the positive busbar includes a first main busbar and a plurality of first branch busbars connecting the first main busbar, and the negative busbar includes a second main busbar and a plurality of second branch busbars connecting the second main busbar; The first main busbar is electrically connected to one terminal of the corresponding terminal group, and the second main busbar is electrically connected to the other terminal of the corresponding terminal group; The positive output terminals of each of the plurality of power modules are electrically connected to one of the first branch buses, and the negative output terminals of each of the plurality of power modules are electrically connected to one of the second branch buses.

5. The charging device according to claim 4, characterized in that, The plurality of charging connectors includes a second charging connector, the positive input terminal of which is electrically connected to the first main bus, and the negative input terminal of which is electrically connected to the second main bus.

6. The charging device according to claim 2, characterized in that, The charging device further includes wires, each of the positive busbars and each of the negative busbars is a metal busbar, and each of the charging connectors is electrically connected to the positive busbars and negative busbars of the at least one of the busbar groups via the wires.

7. The charging device according to claim 1, characterized in that, The power distribution device further includes a circuit board and multiple switching assemblies. The multiple switching assemblies and the multiple terminal groups are all fixed on the circuit board. Each switching assembly is electrically connected to at least two of the terminal groups, and each switching assembly is used to control the on / off state of the circuit between the at least two terminal groups.

8. The charging device according to claim 7, characterized in that, The charging device further includes a first circuit breaking device disposed on the circuit board. The plurality of terminal groups include a first terminal group, and the plurality of switch assemblies include a first switch assembly. The first terminal group is electrically connected to the first switch assembly through the first circuit breaking device. The first circuit breaking device is used to break the circuit between the first terminal group and the first switch assembly.

9. The charging device according to claim 1, characterized in that, The charging device further includes a first circuit disconnection device, the plurality of terminal groups include a second terminal group, the plurality of charging connectors include a third charging connector, the plurality of bus groups include a first bus group, and the plurality of power modules include a first power module; The first busbar group includes a first part and a second part. The first part is electrically connected to the second terminal group, and the second part is electrically connected to the first power module and the third charging connector. The first part and the second part are electrically connected through the first circuit disconnection device, which is used to disconnect the circuit between the first part and the second part.

10. The charging device according to claim 1, characterized in that, The charging device further includes a second circuit disconnection device, the plurality of terminal groups include a third terminal group, the plurality of charging connectors include a fourth charging connector, the plurality of bus groups include a second bus group, and the plurality of power modules include a second power module; The second busbar group includes a third part and a fourth part. The third part is electrically connected to the fourth charging connector, and the fourth part is electrically connected to the third terminal group and the second power module. The third part and the fourth part are electrically connected through the second circuit disconnection device, which is used to disconnect the circuit between the third part and the fourth part.

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