Power distribution apparatus and charging device

Abstract

Embodiments of the present application relate to the technical field of energy, and provide a power distribution apparatus, and a charging device comprising the power distribution apparatus. The power distribution apparatus is used to distribute an input current into at least one circuit and output same, and comprises a circuit board, multiple switch assemblies, and multiple electrically conductive portions. The multiple switch assemblies are arranged on the circuit board along a first direction, each switch assembly comprising two first pins, contacts used for connecting or disconnecting the two first pins, two second pins, and contacts used for connecting or disconnecting the two second pins. The multiple electrically conductive portions are all fixed on the circuit board. In the first direction, two adjacent switch assemblies each have a first pin connected to a same electrically conductive portion, and the two switch assemblies located at two ends each have a first pin connected to a same electrically conductive portion. In addition, two adjacent switch assemblies each have a second pin connected to a same electrically conductive portion, and the two switch assemblies located at two ends each have a second pin connected to a same electrically conductive portion.

Description

Power distribution device and charging equipment

[0001] This application claims priority to Chinese Patent Application No. 202422972873.0, filed on November 29, 2024, entitled "Power Distribution Device and 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 in particular to a power distribution device and a charging device. Background Technology

[0003] In charging stations, the current output by the power module is usually distributed to the corresponding charging interface through a switch matrix. The connection between the power module and the switch matrix, as well as the connection within the switch matrix itself, mainly relies on copper busbars and cables for conversion.

[0004] In the prior art, the switching devices (e.g., relays) of the switch matrix are usually placed separately. After being transferred through multiple copper busbars, the copper busbar circuits become complicated and the number of transfer paths is large, resulting in an excessively large overall size of the switch matrix and a large amount of space occupied.

[0005] Utility Model Content

[0006] This application provides a power distribution device and a charging device including the power distribution device, which reduces the use of adapter copper busbars and reduces the space occupied by the power distribution device.

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

[0008] A first aspect of this application provides a power distribution device for distributing an input current into at least one path and outputting it. The power distribution device includes a circuit board, a plurality of switching assemblies, and a plurality of conductive parts. The plurality of switching assemblies are arranged on the circuit board along a first direction. Each switching assembly includes two first pins, a contact for connecting or disconnecting the two first pins, two second pins, and a contact for connecting or disconnecting the two second pins. The plurality of conductive parts are all fixed on the circuit board. In the first direction, each of two adjacent switching assemblies has one first pin connected to the same conductive part, and each of two switching assemblies at both ends has one first pin connected to the same conductive part. The two first pins in each switching assembly are respectively connected to different conductive parts. Furthermore, each of two adjacent switching assemblies has one second pin connected to the same conductive part, and each of two switching assemblies at both ends has one second pin connected to the same conductive part. The two second pins in each switching assembly are respectively connected to different conductive parts.

[0009] By using multiple switching components and multiple conductive parts, current distribution can be achieved. When the power distribution device is electrically connected to a power module and a load (e.g., a charging interface), the load can draw current from multiple power modules. Furthermore, integrating multiple switching components onto a circuit board improves the integration of the power distribution device, facilitating its overall installation and replacement. Moreover, electrically connecting multiple switching components via conductive parts on the circuit board reduces the use of copper busbars, further enhancing the integration of the power distribution device, reducing its size, and minimizing its space requirements.

[0010] In one embodiment of this application, multiple switch components are fixed on the same surface of a circuit board, and multiple conductive parts are fixed on the surface of the circuit board opposite to the multiple switch components. The two first pins and two second pins of each switch component pass through the circuit board and are connected to the corresponding conductive parts.

[0011] The switching components and conductive parts are respectively disposed on different surfaces of the circuit board, allowing multiple switching components to be arranged in a predetermined manner on the same surface of the circuit board. Furthermore, this also facilitates the arrangement of multiple conductive parts on the same surface. Moreover, when the circuit board is installed in a charging device, the switching components have minimal impact on the external busbars of the conductive parts, and the conductive parts located on the same surface can more easily contact and connect to the external busbars.

[0012] In one embodiment of this application, in each switch assembly, two first pins are arranged along a first direction, two second pins are arranged along the first direction, and one of the first pins and one of the second pins are arranged along a second direction, which is perpendicular to the first direction and the thickness direction of the circuit board.

[0013] Since each of two adjacent switching components has one first pin that needs to connect to the same conductive part, and each of two adjacent switching components has one second pin that needs to connect to the same conductive part, it is advantageous to arrange and position the conductive parts by placing the two first pins of each switching component on one side and the two second pins of each switching component on the other side. Furthermore, arranging the two first pins and two second pins on different sides can increase the creepage distance between the first and second pins, reducing the possibility of a short circuit between the current flowing through the first and second pins.

[0014] In one embodiment of this application, the plurality of conductive parts include a first conductive part and a plurality of second conductive parts. In a first direction, two switch components located at both ends each have a first pin connected to the first conductive part, and two adjacent switch components each have a first pin connected to the same second conductive part. The plurality of second conductive parts are arranged along the first direction, and the first conductive part is located on the periphery of the plurality of second conductive parts.

[0015] Each of the two switch components located at both ends has a first pin connected to a first conductive part. The first conductive part needs to connect the two switch components at both ends across a long distance. In this application, the first conductive part is located outside of multiple second conductive parts. In this way, the arrangement of the first conductive part will avoid multiple second conductive parts, reducing the possibility of interference between the first conductive part and multiple second conductive parts, and making the arrangement of multiple conductive parts more reasonable and clear.

[0016] In one embodiment of this application, the circuit board has a first gap, and in a second direction, at least one second conductive part is provided with the first gap between it and the first conductive part, and the second direction is perpendicular to the first direction and the thickness direction of the circuit board.

[0017] The first conductive part needs to connect two switching assemblies located at both ends, so the length of the first conductive part is relatively long. A part of the first conductive part will be located on the side of multiple second conductive parts in the second direction. Setting a first gap on the circuit board can increase the creepage distance between the first conductive part and at least one second conductive part, enhance the safety protection performance, reduce the possibility of short circuit between the first conductive part and the second conductive part, and reduce the risk of failure of the power distribution device.

[0018] In one embodiment of this application, the power distribution device further includes a baffle plate, which is inserted into the first gap and protrudes to the side of the circuit board where the conductive part is provided.

[0019] An additional baffle is installed at the first gap, protruding to the side of the circuit board, which further increases the creepage distance between the first conductive part and the second conductive part, and further enhances the safety protection performance of the circuit board, reducing the possibility of power distribution device failure.

[0020] In one embodiment of this application, the first conductive part is a trace on a circuit board, and the plurality of second conductive parts are metal sheets.

[0021] Each of the multiple second conductive parts can be a metal sheet. Metal has good conductivity. Each second conductive part made of a metal sheet is connected to the corresponding two first pins, which can realize the electrical connection between the two first pins. In addition, since the first conductive part is relatively long, it can be a trace (metal line) on the circuit board, thereby reducing the production cost of the circuit board. The first conductive part made of trace can be appropriately widened to reduce the current-carrying resistance.

[0022] In one embodiment of this application, multiple conductive parts are metal sheets.

[0023] Multiple conductive parts can all be in the form of metal sheets. Metal has good conductivity. Each conductive part made of a metal sheet is connected to two corresponding first pins (or two corresponding second pins), which can realize the electrical connection between the two first pins (or two second pins). Furthermore, the conductive parts in the form of metal sheets are also easy to connect to external busbars.

[0024] In one embodiment of this application, at least one of the plurality of conductive parts includes a first part, a second part, and a shunt, wherein the first part and the second part are each connected to a first pin, and the shunt connects the first part and the second part.

[0025] A shunt can be used to measure current. In AC or DC circuits, a shunt distributes current to each branch in a certain proportion. By measuring the voltage drop across the shunt, the current value in the circuit can be calculated. At least one conductive part includes a shunt to facilitate sampling and detection of the current flowing through it.

[0026] In one embodiment of this application, the power distribution device further includes at least one busbar and at least one screw. The circuit board has at least one first through hole, and at least one of the plurality of conductive parts has a second through hole. Each second through hole communicates with a first through hole. Each screw passes through a first through hole and a second through hole that communicate with each other and is threadedly connected to a busbar. Each busbar contacts a conductive part.

[0027] The interconnected first and second through holes allow corresponding screws to pass through. The screws can pass through the first and second through holes and then be threaded onto the busbar to fix the circuit board onto the busbar, so that the conductive parts contact the busbar. In this way, the current input or output through the busbar can flow through the corresponding conductive parts and the corresponding switching components. The current distribution is achieved by controlling the current on and off through the switching components.

[0028] In one embodiment of this application, the circuit board has a second gap located between two first pins of at least one switching assembly.

[0029] Setting a second gap on the circuit board can increase the creepage distance between the two first pins of each switching component, enhance the safety protection performance of the circuit board, reduce the possibility of short circuit between the two first pins, make the operation of the circuit board more stable and safe, and reduce the risk of power distribution device failure.

[0030] In one embodiment of this application, the power distribution device further includes a baffle plate, which is inserted into the second gap and protrudes to the side of the circuit board where the conductive portion is provided.

[0031] An additional baffle is installed at the second gap, protruding towards the side of the circuit board, which further increases the creepage distance between the two first pins and further reduces the possibility of power distribution device failure.

[0032] In one embodiment of this application, the switch assembly further includes a housing. In each switch assembly, contacts for connecting or disconnecting two first pins and contacts for connecting or disconnecting two second pins are located inside the housing. Each first pin and each second pin are partially located inside the housing and partially extend outside the housing.

[0033] Each switching assembly can be an electronic device; for example, each switching assembly can be a relay or a contactor. In this case, the housing of the switching assembly contains both contacts for controlling the on / off state of the circuits on the two first pins and contacts for controlling the on / off state of the circuits on the two second pins. By setting up a single device, the on / off control of the two current paths can be achieved.

[0034] In one embodiment of this application, the switch assembly further includes a first housing and a second housing, with a gap between the first housing and the second housing. In each switch assembly, a contact for connecting or disconnecting two first pins is located inside the first housing, with a portion of each first pin inside the first housing and the other portion extending outside the first housing. Similarly, a contact for connecting or disconnecting two second pins is located inside the second housing, with a portion of each second pin inside the second housing and the other portion extending outside the second housing.

[0035] Each switching assembly can also be multiple electronic devices. For example, each switching assembly may include two relays, or, for another example, two contactors. In this case, the first housing of the switching assembly contains contacts for controlling the on / off state of the circuits on two first pins, and the second housing contains contacts for controlling the on / off state of the circuits on two second pins, thus achieving control of the on / off state of multiple current circuits through different devices.

[0036] A second aspect of this application provides a charging device, including multiple power modules, multiple charging interfaces, and the aforementioned power distribution device; the multiple conductive parts are multiple connection groups, each connection group electrically connects two switching components, each connection group includes two conductive parts, one of which is connected to two first pins, and the other conductive part is connected to two second pins; the multiple power modules are connected one-to-one with the multiple connection groups, and the output terminal of each power module is electrically connected to the two conductive parts in the corresponding connection group; the multiple charging interfaces are connected one-to-one with the multiple connection groups, and the input terminal of each charging interface is electrically connected to the two conductive parts in the corresponding connection group.

[0037] The power distribution device is electrically connected to the output terminal of the power conversion device and the input terminals of multiple charging ports. Through the power distribution device, each charging port can directly draw current from its corresponding power module, or it can draw current from two adjacent power modules. The charging device provided in this application includes the aforementioned power distribution device. Therefore, the charging device provided in this application and the power distribution device of the above-mentioned technical solution can solve the same technical problem and have the same technical effect, which will not be repeated here.

[0038] In one embodiment of this application, the power distribution device further includes busbar groups, each busbar group including two busbars, and multiple busbar groups are connected one-to-one with multiple connection groups. The two busbars of each busbar group are respectively connected to different conductive parts in the corresponding connection group. The positive and negative terminals of the output terminal of each power module are respectively connected to the two conductive parts in the corresponding connection group through different busbars in the corresponding busbar group. The positive and negative terminals of the input terminal of each charging interface are respectively connected to different busbars in the corresponding busbar group.

[0039] One busbar in each busbar group is connected to the positive terminal of the power module output and the positive terminal of the charging interface input, while the other busbar is connected to the negative terminal of the power module output and the negative terminal of the charging interface input. Furthermore, each busbar is connected to a corresponding conductive part, thus forming a circuit for transmission. Attached Figure Description

[0040] Figure 1 is a schematic diagram of the overall structure of a charging device provided in an embodiment of this application;

[0041] Figure 2 is a schematic diagram of the overall structure of another charging device provided in an embodiment of this application;

[0042] Figure 3 is a topology diagram of a charging device provided in an embodiment of this application;

[0043] Figure 4 is a schematic diagram of a power distribution device provided in an embodiment of this application;

[0044] Figure 5 is a schematic diagram of a switch assembly provided in an embodiment of this application;

[0045] Figure 6 is a schematic diagram of the internal structure of a switch assembly provided in an embodiment of this application;

[0046] Figure 7 is a schematic diagram of another switching assembly provided in an embodiment of this application;

[0047] Figure 8 is a schematic diagram of a conductive part provided in an embodiment of this application;

[0048] Figure 9 is a diagram showing a connection method between multiple conductive parts and multiple switching assemblies provided in an embodiment of this application;

[0049] Figure 10 is a partial topology diagram of a charging device provided in an embodiment of this application;

[0050] Figure 11 is a diagram showing another connection method between multiple conductive parts and multiple switching assemblies provided in an embodiment of this application;

[0051] Figure 12 is a schematic diagram of a second through hole provided in an embodiment of this application;

[0052] Figure 13 is a schematic diagram of a first through hole provided in an embodiment of this application;

[0053] Figure 14 is a schematic diagram of the structure of a first conductive part provided in an embodiment of this application;

[0054] Figure 15 is a schematic diagram of the structure of a splitter provided in an embodiment of this application from a first perspective;

[0055] Figure 16 is a schematic diagram of the structure of a splitter provided in an embodiment of this application from a second perspective;

[0056] Figure 17 is a schematic diagram of another first conductive part provided in an embodiment of this application;

[0057] Figure 18 is a structural schematic diagram of a first gap and a second gap provided in an embodiment of this application;

[0058] Figure 19 is a schematic diagram of a baffle provided in an embodiment of this application;

[0059] Figure 20 is a schematic diagram of the structure of a protective shell provided in an embodiment of this application.

[0060] Reference numerals: 100-Charging equipment; 101-Equipment cabinet; 102-Charging interface; 103-Charging host; 104-Charging terminal; 105-Power conversion device; 1051-Power module; 106-Power distribution device; 107-Cable; 1-Circuit board; 11-First through hole; 12-First gap; 13-Second gap; 2-Switch assembly; 21-Housing; 22-First housing; 23-Second housing; 24-First pin; 25-Second pin; 26-Contact; 3-Conductive part; 31-First conductive part; 32-Second conductive part; 33-Third conductive part; 34-Fourth conductive part; 35-Second through hole; 36-First part; 37-Second part; 38-Shunting device; 4-Baffle; 5-Protective shell; 51-Opening; 6-Busbar group; 61-First busbar group; 62-Second busbar group; 63-Third busbar group; 64-Busbar; 7-Mounting base; 8-Screw. Detailed Implementation

[0061] 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.

[0062] 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.

[0063] In this application, unless otherwise expressly stated and limited, "multiple" means two or more.

[0064] 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.

[0065] In the accompanying drawings of the embodiments of this application, solid structures such as parts and components are represented by guide lines; hollow structures such as openings, holes, spaces, and cavities are represented by guide lines with arrows.

[0066] This application provides a charging device 100, which can be a charging pile, such as an integrated charging pile. FIG1 exemplarily shows the structure of a charging device 100 (integrated charging pile). Referring to FIG1, the charging device 100 includes a device cabinet 101 and at least one charging interface 102 (for example, the charging interface 102 is a charging gun). When the charging interface 102 is not charging, it can be plugged into the device cabinet 101 for personnel to access at any time.

[0067] For example, the charging device 100 can also be a split-type charging pile. Figure 2 shows an exemplary structure of a charging device 100 (split-type charging pile). Referring to Figure 2, the charging device 100 includes a charging host 103, at least one charging terminal 104, and at least one charging interface 102 (e.g., the charging interface 102 is a charging gun). Each charging terminal 104 is electrically connected to the charging host 103, and each charging terminal 104 corresponds to one or more charging interfaces 102. When the charging interface 102 is not performing a charging operation, the charging interface 102 can be plugged into the corresponding charging terminal 104 for personnel to use from the charging terminal 104.

[0068] Furthermore, referring to Figures 1 and 2, the charging device 100 also includes a power conversion device 105, a power distribution device 106, and a cable 107. In an example where the charging device 100 is an integrated charging pile, referring to Figure 1, the power conversion device 105 and the power distribution device 106 can both be housed within the equipment cabinet 101, and each charging interface 102 can be electrically connected to the power distribution device 106 via a cable 107 (e.g., the charging gun cable). In an example where the charging device 100 includes a charging host 103 and at least one charging terminal 104, referring to Figure 2, the power conversion device 105 and the power distribution device 106 can be housed within the charging host 103, and each charging interface 102 is electrically connected to the corresponding charging terminal 104 via a cable 107, with the charging terminal 104 connected to the power distribution device 106 via the cable 107.

[0069] The input terminal of the power conversion device 105 is used to receive alternating current, and the output terminal of the power conversion device 105 is used to output direct current. The power distribution device 106 is electrically connected to the output terminal of the power conversion device 105 and the input terminals of multiple charging interfaces 102. The power distribution device 106 is used to distribute the direct current output by the power conversion device 105 to at least one charging interface 102, and to make the output terminal of the charging interface 102 output direct current, thereby charging the device to be charged (e.g., an electric vehicle) through the charging interface 102.

[0070] Figure 3 illustrates an exemplary topology of a charging device 100. Referring to Figure 3, the power conversion device 105 may include multiple power modules 1051. For example, the multiple power modules 1051 may include AC-DC module a, AC-DC module b, AC-DC module c, ..., AC-DC module f. In some other examples, the power conversion device 105 may include multiple AC-DC modules (power modules 1051) and multiple DC-DC modules (power modules 1051). The output terminals of the multiple AC-DC modules are 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.

[0071] Referring to Figure 3, the multiple charging interfaces 102 may include charging interface a, charging interface b, charging interface c...charging interface f. Each charging interface 102 corresponds to one of the multiple AC-DC modules. Furthermore, the output terminal of each AC-DC module is electrically connected to the input terminal of its corresponding charging interface 102 module. Each charging interface 102 can directly draw power from its corresponding power module 1051. For example, the output terminal of AC-DC module a is electrically connected to the input terminal of its corresponding charging interface a, and charging interface a can directly draw power from AC-DC module a.

[0072] Furthermore, referring to Figure 3, the power distribution device 106 is electrically connected to the output terminal of the power conversion device 105 and the input terminals of multiple charging ports 102. Through the power distribution device 106, each charging port 102 can directly access the power of its corresponding power module 1051, or access the power of two adjacent power modules 1051. For example, charging port a can directly access the power of AC-DC module a, and charging port a can also access the power of AC-DC module b through the power distribution device 106. Charging port a can also access the power of AC-DC module f through the power distribution device 106.

[0073] When charging port a directly draws power from AC-DC module a, and if charging port a outputs 10A of current (this is just an example and not a limitation on the output current of charging port a), then when charging port a simultaneously draws power from both AC-DC module a and AC-DC module b, charging port a can output 20A of current. Similarly, when charging port a simultaneously draws power from both AC-DC module a and AC-DC module f, charging port a can also output 20A of current. When charging port a simultaneously draws power from AC-DC module a, AC-DC module b, and AC-DC module f, charging port a can output 30A of current.

[0074] In the case where the power conversion device 105 includes multiple AC-DC modules and multiple DC-DC modules (not shown in the figure), the output terminals of the multiple DC-DC modules output DC power. Through the power distribution device 106, each charging interface 102 can directly call the power of its corresponding DC-DC module, or it can call the power of two DC-DC modules adjacent to its corresponding DC-DC module.

[0075] This application also provides a power distribution device 106. FIG4 exemplarily illustrates a power distribution device 106. Referring to FIG4, the power distribution device 106 includes a circuit board 1 and a plurality of switch components 2. The plurality of switch components 2 are arranged on the circuit board 1 along a first direction. For example, the surface of the circuit board 1 is rectangular, and the first direction may be the length direction of the surface of the circuit board 1.

[0076] Figure 5 illustrates the structure of a switch assembly 2, and Figure 6 shows the internal structure of the switch assembly 2. Referring to Figures 5 and 6, each switch assembly 2 includes two first pins 24, a contact 26 (first contact) for connecting or disconnecting the two first pins 24, two second pins 25, and a contact 26 (second contact) for connecting or disconnecting the two second pins 25.

[0077] In the examples shown in Figures 5 and 6, the switch assembly 2 also includes a housing 21. In each switch assembly 2, both the first contact (contact 26) and the second contact (contact 25) are located within the housing 21. Each first pin 24 and each second pin 25 are partially located within the housing 21 and partially extend outside the housing 21. In this example, each switch assembly 2 can be an electronic device, for example, each switch assembly 2 can be a relay or a contactor. By providing two contacts 26 (first contact and second contact) within one device, control of the on / off state of two current paths can be achieved.

[0078] In other examples, Figure 7 exemplarily illustrates the structure of another switch assembly 2. Referring to Figure 7, the switch assembly 2 further includes a first housing 22 and a second housing 23, with a gap between the first housing 22 and the second housing 23, for example, the first housing 22 and the second housing 23 are arranged at intervals. In each switch assembly 2, a contact 26 for connecting or disconnecting two first pins 24 is located inside the first housing 22, with each first pin 24 partially located inside the first housing 22 and partially extending outside the first housing 22. Furthermore, a contact 26 for connecting or disconnecting two second pins 25 is located inside the second housing 23, with each second pin 25 partially located inside the second housing 23 and partially extending outside the second housing 23.

[0079] That is, in the example shown in Figure 7, each switch assembly 2 may also include multiple electronic devices. For example, each switch assembly 2 may include two relays, or, for another example, each switch assembly 2 may include two contactors. In this case, the on / off control of different circuit currents is achieved through different devices.

[0080] In addition, the power distribution device 106 also includes a plurality of conductive parts 3. FIG8 exemplarily illustrates the structure of one conductive part 3. Referring to FIG8, the plurality of conductive parts 3 are all fixed on the circuit board 1. For example, a plurality of switch assemblies 2 are fixed on the same surface of the circuit board 1, and the plurality of conductive parts 3 are fixed on the surface of the circuit board 1 opposite to the plurality of switch assemblies 2. The switch assembly 2 in FIG8 is the switch assembly 2 shown in FIG5 or FIG6. The two first pins 24 and the two second pins 25 of each switch assembly 2 pass through the circuit board 1 and are connected (e.g., soldered) to the corresponding conductive part 3.

[0081] The conductive part 3 can be any structure capable of conducting electricity. For example, the conductive part 3 can be a metal sheet (e.g., a copper sheet, an aluminum sheet, etc.). In this example, the conductive part 3 can be bonded, soldered, or pressed onto the circuit board 1. As another example, the conductive part 3 can also be a trace (or metal wire) on the circuit board 1.

[0082] Figure 9 illustrates, exemplarily, the connection between multiple conductive parts 3 and multiple switching components 2. The dashed boxes in Figure 9 represent multiple switching components 2, including switch component a, switch component b, ..., switch component f. The multiple conductive parts 3 include conductive part a, conductive part b, conductive part c, conductive part d, conductive part e, conductive part f, etc.

[0083] In the first direction, each of the two switch components 2 located at both ends has a first pin 24 connected to the same conductive part 3. For example, a first pin 24 of switch component a and a first pin 24 of switch component f are both connected to conductive part a. Each of the two switch components 2 located at both ends has a second pin 25 connected to the same conductive part 3. For example, a second pin 25 of switch component a and a second pin 25 of switch component f are both connected to conductive part b.

[0084] Furthermore, in the first direction, each of two adjacent switch components 2 has a first pin 24 connected to the same conductive part 3. For example, a first pin 24 of switch component a and a first pin 24 of switch component b are both connected to conductive part c. Each of two adjacent switch components 2 has a second pin 25 connected to the same conductive part 3. For example, a second pin 25 of switch component a and a second pin 25 of switch component b are both connected to conductive part d.

[0085] Furthermore, each switch assembly 2 has two first pins 24 connected to different conductive parts 3, and each switch assembly 2 has two second pins 25 connected to different conductive parts 3, meaning each switch assembly 2 connects to four conductive parts 3. Each conductive part 3 can be used to electrically connect a structure for input or output current. When the two first pins 24 are connected through a first contact, the current path between the two conductive parts 3 corresponding to the two first pins 24 is open; when the two first pins 24 are disconnected through the first contact, the current path between the two conductive parts 3 corresponding to the two first pins 24 is closed. Similarly, when the two second pins 25 are connected through a second contact, the current path between the two conductive parts 3 corresponding to the two second pins 25 is open; when the two second pins 25 are disconnected through the second contact, the current path between the two conductive parts 3 corresponding to the two second pins 25 is open.

[0086] The plurality of conductive parts 3 can be divided into multiple connection groups. Each connection group electrically connects two switching components 2. Each connection group includes two conductive parts 3, with one conductive part 3 connected to two first pins 24 and the other conductive part 3 connected to two second pins 25. For example, one connection group may include conductive parts a and b, another connection group may include conductive parts c and d, and yet another connection group may include conductive parts e and f.

[0087] For example, referring back to Figure 3, the two conductive parts 3 marked in Figure 3 can be regarded as one of the connection groups. Other connection groups are not marked in Figure 3. In the charging device 100, multiple power modules 1051 correspond one-to-one with multiple connection groups. The output terminal of each power module 1051 is electrically connected to the two conductive parts 3 in the corresponding connection group. Multiple charging interfaces 102 correspond one-to-one with multiple connection groups. The input terminal of each charging interface 102 is electrically connected to the two conductive parts 3 in the corresponding connection group.

[0088] The power module 1051 and the charging interface 102 can be electrically connected to the corresponding connection group in any suitable manner. For example, the power distribution device 106 may also include multiple busbars 64 (copper busbars, aluminum busbars, etc.), which are divided into multiple busbar groups 6. Each busbar group 6 includes two busbars 64 (structures for input or output current). The two busbars 64 of each busbar group 6 are respectively connected to different conductive parts 3 in the corresponding connection group. The positive and negative terminals of the output terminals of each power module 1051 are respectively connected to different busbars 64 in the corresponding busbar group 6, and the positive and negative terminals of the input terminals of each charging interface 102 are respectively connected to different busbars 64 in the corresponding busbar group 6.

[0089] For example, referring to Figure 3, the output terminal of each AC-DC module is electrically connected to the input terminal of the corresponding charging interface 102 module through the corresponding busbar group 6. That is, the output terminal (positive) of each AC-DC module is electrically connected to the input terminal (positive) of the corresponding charging interface 102 module through one of the busbars 64 of the corresponding busbar group 6, and the output terminal (negative) of each AC-DC module is electrically connected to the input terminal (negative) of the corresponding charging interface 102 module through the other busbar 64 of the corresponding busbar group 6.

[0090] Each busbar 64 can be a single, complete metal busbar (copper busbar, aluminum busbar, etc.) or multiple metal busbars (copper busbar, aluminum busbar, etc.) fixed together. For example, each busbar 64 may include at least two metal busbars, one of which is electrically connected to the output terminal (positive or negative) of the power conversion device 105, and the other is electrically connected to the input terminal (positive or negative) of the charging interface 102.

[0091] Figure 10 illustrates a partial topology of the charging device 100 (Figure 10 can be understood as a partial view of Figure 4), showing the positions of switch assembly a and switch assembly f. Taking the partial structure of the charging device 100 shown in Figure 10 as an example, referring to Figure 10, the plurality of busbar groups 6 include a first busbar group 61, a second busbar group 62, and a third busbar group 63.

[0092] The first busbar group 61 includes busbar a and busbar b. Busbar a includes two metal bars a1 and a2 fixedly connected. Metal bar a1 is electrically connected to the output terminal (positive) of AC-DC module a, and metal bar a2 is electrically connected to the input terminal (positive) of charging interface a. Busbar b includes two metal bars b1 and b2 fixedly connected. Metal bar b1 is electrically connected to the output terminal (negative) of AC-DC module a, and metal bar b2 is electrically connected to the input terminal (negative) of charging interface a. Furthermore, metal bar a1 is connected to conductive part a, that is, conductive part a is connected to busbar a; metal bar b1 is connected to conductive part b, that is, conductive part b is connected to busbar b. In other words, the two busbars 64 (busbar a and busbar b) of the first busbar group 61 are respectively connected to different conductive parts 3 (conductive part a and conductive part b) in the corresponding connection group.

[0093] The second busbar group 62 includes busbar c and busbar d. Busbar c includes metal busbars c1 and c2 fixedly connected. Metal busbar c1 is electrically connected to the output terminal (positive) of AC-DC module b, and metal busbar c2 is electrically connected to the input terminal (positive) of charging interface b. Busbar d includes metal busbars d1 and d2 fixedly connected. Metal busbar d1 is electrically connected to the output terminal (negative) of AC-DC module b, and metal busbar d2 is electrically connected to the input terminal (negative) of charging interface b. Furthermore, metal busbar c1 is connected to conductive part c, that is, conductive part c is connected to busbar c; metal busbar d1 is connected to conductive part d, that is, conductive part d is connected to busbar d. In other words, the two busbars 64 (busbar c and busbar d) of the second busbar group 62 are respectively connected to different conductive parts 3 (conductive parts c and d) in the corresponding connection group.

[0094] The third busbar group 63 includes busbar e and busbar f. Busbar e includes metal busbar e1 and metal busbar e2 fixedly connected. Metal busbar e1 is electrically connected to the output terminal (positive) of AC-DC module f, and metal busbar e2 is electrically connected to the input terminal (positive) of charging interface f. Busbar f includes metal busbar f1 and metal busbar f2 fixedly connected. Metal busbar f1 is electrically connected to the output terminal (negative) of AC-DC module f, and metal busbar f2 is electrically connected to the input terminal (negative) of charging interface f. Furthermore, metal busbar e1 is connected to conductive part e, that is, conductive part e is connected to busbar e; metal busbar f1 is connected to conductive part f, that is, conductive part f is connected to busbar f. In other words, the two busbars 64 (busbar e and busbar f) of the third busbar group 63 are respectively connected to different conductive parts 3 (conductive parts e and conductive parts f) in the corresponding connection group.

[0095] Referring to Figures 9 and 10, switch assembly a can control the on / off state of conductive parts a and c. Conductive parts a and c are each connected to a busbar 64 (busbar a and busbar c), meaning switch assembly a can control the on / off state of the circuit between busbar a and busbar c. Switch assembly a can also control the on / off state of conductive parts b and d. Conductive parts b and d are each connected to a busbar 64 (busbar b and busbar d), meaning switch assembly a can control the on / off state of the circuit between busbar b and busbar d.

[0096] Similarly, the switching assembly f can control the on / off state of conductive parts a and e. Each conductive part a and each conductive part e is connected to a busbar 64 (busbar a and busbar e), meaning that the switching assembly f can control the on / off state of the circuit between busbar a and busbar e. The switching assembly f can also control the on / off state of conductive parts b and f. Each conductive part b and each conductive part f is connected to a busbar 64 (busbar b and busbar f), meaning that the switching assembly f can control the on / off state of the circuit between busbar b and busbar f.

[0097] The current output from AC-DC module a can be delivered to the positive terminal of charging interface a through metal busbars a1 and a2, then flows through the negative terminal of charging interface a, metal busbars b2 and b1, and returns to the negative terminal of AC-DC module a. The current output from AC-DC module b can be delivered to the positive terminal of charging interface b through metal busbars c1 and c2, then flows through the negative terminal of charging interface b, metal busbars d2 and d1, and returns to the negative terminal of AC-DC module b. The current output from AC-DC module f can be delivered to the positive terminal of charging interface f through metal busbars e1 and e2, then flows through the negative terminal of charging interface f, metal busbars f2 and f1, and returns to the negative terminal of AC-DC module f.

[0098] When charging interface a needs to draw power from AC-DC module b, the current output from AC-DC module b can be delivered to switching component a through metal busbar c1 and conductive part c. The current on metal busbar c1 is then delivered to metal busbar a1 through switching component a, and then to the positive terminal of charging interface a through metal busbar a2. To form a loop, switching component a also opens the current path between conductive parts b and d, that is, switching component a opens the current path between metal busbar b1 and metal busbar d1. The current delivered from the positive terminal of AC-DC module b to the positive terminal of charging interface a flows through the negative terminal of charging interface a, metal busbar b2, metal busbar b1, conductive part b, switching component a, conductive part d, and metal busbar d1, returning to the negative terminal of AC-DC module b. Thus, the current input to charging interface a includes both the current from AC-DC module a and the current from AC-DC module b.

[0099] When charging interface a needs to draw power from AC-DC module f, the current output from AC-DC module f is delivered to switching component f through metal busbar e1 and conductive part e. Switching component f connects the current path between conductive part e and conductive part a, that is, it connects the current path between metal busbar e1 and metal busbar a1. The current on metal busbar e1 is delivered to metal busbar a1 through switching component f, and then to the positive terminal of charging interface a through metal busbar a2. To form a loop, switching component f also connects the current path between conductive part b and conductive part f, that is, it connects the current path between metal busbar b1 and metal busbar f1. The current delivered from the positive terminal of AC-DC module f to the positive terminal of charging interface a flows through the negative terminal of charging interface a, metal busbar b2, metal busbar b1, conductive part b, switching component f, conductive part f, and metal busbar f1, returning to the negative terminal of AC-DC module f. Thus, the current input to charging interface a includes both the current from AC-DC module a and the current from AC-DC module f.

[0100] For example, in addition to accessing the power of AC-DC module b, charging interface b can also access the power of AC-DC module a and AC-DC module c through the power distribution device 106 of this application. The principle will not be elaborated in this application.

[0101] In some other examples, the power module 1051 and the charging interface 102 can also be electrically connected to the corresponding connection group via cables.

[0102] In Figures 9 and 10, the switch assembly 2 is the same as that in Figure 6. In other examples, the switch assembly 2 can also be the same as that in Figure 7. For example, Figure 11 shows an exemplary connection between multiple conductive parts 3 and multiple switch assemblies 2, wherein multiple switch assemblies 2 are arranged along a first direction, and the first housing 22 and the second housing 23 of each switch assembly 2 are arranged along a second direction.

[0103] In some examples, to ensure a stable connection and contact between the conductive part 3 and the busbar 64, the circuit board 1 has a plurality of first through holes 11, and at least some of the conductive parts 3 (one or more conductive parts 3) have second through holes 35. Figure 12 exemplarily shows the structure of one second through hole 35 (each conductive part 3 in Figure 12 is provided with a second through hole 35), and Figure 13 exemplarily shows the structure of one first through hole 11. Referring to Figure 13, the power distribution device 106 may also include a mounting base 7 and a plurality of screws 8 (bolts or screws). The busbar 64 is fixed on the mounting base 7, and each second through hole 35 communicates with one first through hole 11. The interconnected first through holes 11 and second through holes 35 are used for the screws 8 to pass through. After passing through the first through holes 11 and the second through holes 35, the screws 8 are threadedly connected to the busbar 64. Alternatively, in some other examples, the screws 8 pass through the first through holes 11, the second through holes 35, and the busbar 64, and are threadedly connected to the mounting base 7. The conductive part 3 can be locked to the corresponding busbar 64 by screw 8, making the contact and connection between the two more stable.

[0104] In some other examples, only a portion of the conductive parts 3 are provided with second through holes 35. In such examples, the number of first through holes 11 on the circuit board 1 is equal to the number of second through holes 35.

[0105] In some other examples, the conductive part 3 may not have a second through hole 35, and the screw 8 may not pass through the conductive part 3 and the busbar 64. That is, the screw 8 passes through the first through hole 11 and is threadedly connected to the mounting base 7.

[0106] In some other examples, the power distribution device 106 may include screws 8 but not mounting bases 7, with screws 8 directly locking circuit board 1 and busbar 64.

[0107] Figure 14 exemplarily illustrates the arrangement of two first pins 24 and two second pins 25. Since each of two adjacent switch components 2 has one first pin 24 that needs to be connected to the same conductive part 3, and each of two adjacent switch components 2 has one second pin 25 that needs to be connected to the same conductive part 3, to facilitate the arrangement of the conductive parts 3, referring to Figure 14, the two first pins 24 can be arranged along a first direction, and the two second pins 25 can be arranged along the first direction. One of the first pins 24 and one of the second pins 25 can be arranged along a second direction, which is perpendicular to the first direction and the thickness direction of the circuit board 1. That is, by placing the two first pins 24 and the two second pins 25 of each switch component 2 on different sides of the switch component 2, it is beneficial to the arrangement and placement of multiple conductive parts 3. In addition, arranging the two first pins 24 and the two second pins 25 separately on different sides can also increase the creepage distance between the first pin 24 and the second pin 25, reducing the possibility of a short circuit between the current flowing through the first pin 24 and the current flowing through the second pin 25.

[0108] In some examples, referring to Figure 14, the plurality of conductive parts 3 include a first conductive part 31 (conductive part a in Figure 9 can be the first conductive part 31) and a plurality of second conductive parts 32. In the first direction, each of the two switch components 2 located at both ends has a first pin 24 connected to the first conductive part 31, and each of the two adjacent switch components 2 has a first pin 24 connected to the same second conductive part 32. The plurality of second conductive parts 32 are arranged along the first direction, and the first conductive part 31 is located on the periphery of the plurality of second conductive parts 32. For example, the first conductive part 31 is "C" shaped, and a part of the first conductive part 31 is located to the side of the plurality of second conductive parts 32 in the second direction. In this way, the arrangement of the first conductive part 31 avoids the plurality of second conductive parts 32, reducing the possibility of interference between the first conductive part 31 and the second conductive part 32, thus making the arrangement of the plurality of conductive parts 3 more reasonable and clear.

[0109] Furthermore, referring to FIG14, the plurality of conductive parts 3 also include a third conductive part 33 (conductive part b in FIG9 may be the third conductive part 33) and a plurality of fourth conductive parts 34. In the first direction, each of the two switch assemblies 2 located at both ends has a second pin 25 connected to the third conductive part 33, and each of the two adjacent switch assemblies 2 has a second pin 25 connected to the same fourth conductive part 34. The plurality of fourth conductive parts 34 are arranged along the first direction, and the third conductive part 33 is located on the periphery of the plurality of fourth conductive parts 34. For example, the third conductive part 33 is "C" shaped, and a part of the third conductive part 33 is located on the side of the plurality of fourth conductive parts 34 in the second direction.

[0110] The multiple second conductive parts 32 may have the same shape, or the multiple second conductive parts 32 may have different shapes. The multiple third conductive parts 33 may have the same shape, or the multiple third conductive parts 33 may have different shapes.

[0111] The conductive part 3 can be any suitable structure. For example, metal has good conductivity, and multiple conductive parts 3 can all be in the form of metal sheets. Each conductive part 3 made of metal sheet is connected to the corresponding two first pins 24 (or to the corresponding two second pins 25), which can realize the electrical connection between the two first pins 24 (or the two second pins 25). Furthermore, the conductive part 3 in the form of a metal sheet is also convenient to connect to the external busbar 64, so that the current on the busbar 64 can be input to the circuit board 1 or output from the circuit board 1 through the conductive part 3.

[0112] In the example shown in Figure 14, each conductive part 3 is a metal sheet. For example, the multiple second conductive parts 32 and the multiple third conductive parts 33 are small metal sheets, while the first conductive part 31 and the third conductive part 33 are large metal sheets that span a long distance.

[0113] In other examples, at least one of the multiple conductive parts 3 includes a first part 36, a second part 37, and a shunt 38. Figure 15 exemplarily shows the structure of a shunt 38 from a first viewpoint, which is the viewpoint facing the board surface of the circuit board 1 away from the switch assembly 2 (the position of the switch assembly 2 can be further referenced to Figure 14). In the example shown in Figure 15, the shunt 38 and the switch assembly 2 are located on the same side of the circuit board. Therefore, from the viewpoint of Figure 15, the shunt 38 is obscured by the circuit board 1 and indicated by dashed lines. The shunt 38 is located on the side of the switch assembly 2. The shunt 38 can be C-shaped or arched, and the shunt 38 is plugged into the circuit board 1. The two pins of the shunt 38 pass through the circuit board 1 and are connected to the first part 36 and the second part 37. The first part 36 and the second part 37 can both be metal sheets (e.g., copper busbars or aluminum busbars). In the example shown in FIG15, the conductive parts 3 that electrically connect the two second pins 25 all include the shunt 38. Therefore, the first part 36 and the second part 37 are each connected to one second pin 25, and the shunt 38 connects the first part 36 and the second part 37.

[0114] Figure 16 illustrates the structure of the shunt 38 in Figure 15 from a second perspective. The second perspective is the view of the board surface of the circuit board 1 on which the switch assembly 2 is set. To facilitate observation of the shunt 38, the structure of the circuit board 1, switch assembly 2, etc. are hidden in Figure 16. Referring to Figure 16, it can be intuitively observed that the shunt 38 connects the first part 36 and the second part 37.

[0115] Shunt 38 can be used to measure current. In AC or DC circuits, shunt 38 can distribute current to various branches in a certain proportion. By measuring the voltage drop across shunt 38, the current value in the circuit can be calculated. At least one conductive part 3 includes shunt 38 to facilitate sampling and detection of the current flowing through the conductive part 3. In some other examples, a first portion 36 and a second portion 37 of one of the conductive parts 3 are each connected to a first pin 24, and shunt 38 connects the first portion 36 and the second portion 37.

[0116] Figure 17 illustrates an alternative structure for the first conductive portion 31. Since the first conductive portion 31 is relatively long, in the example shown in Figure 17, the first conductive portion 31 can be a trace (metal line) on the circuit board 1, and the multiple second conductive portions 32 are all metal sheets, thereby reducing production costs. Furthermore, the first conductive portion 31, made using a trace, can have its width appropriately widened to reduce current-carrying resistance. Referring to Figure 17, the third conductive portion 33 can also be a trace on the circuit board 1, and the multiple fourth conductive portions 34 are all metal sheets.

[0117] Because the first conductive portion 31 is relatively long and located around the periphery of the plurality of second conductive portions 32, a portion of the first conductive portion 31 will be located to the side of the plurality of second conductive portions 32 in the second direction. In some examples, the circuit board 1 has a first gap 12. FIG18 exemplarily shows a structure of the first gap 12. In the second direction, at least one second conductive portion 32 is provided with a first gap 12 between it and the first conductive portion 31. For example, in FIG18, each second conductive portion 32 is provided with a first gap 12 between it and the first conductive portion 31. Furthermore, each fourth conductive portion 34 is also provided with a first gap 12 between it and the third conductive portion 33.

[0118] Setting a first gap 12 on the circuit board 1 can increase the creepage distance between the first conductive part 31 and the second conductive part 32, and also increase the creepage distance between the third conductive part 33 and the fourth conductive part 34, thereby enhancing the safety protection performance of the circuit board 1. This reduces the possibility of short circuits between the first conductive part 31 and the second conductive part 32, as well as between the third conductive part 33 and the fourth conductive part 34, making the operation of the circuit board 1 more stable and safe, and reducing the risk of failure of the power distribution device 106.

[0119] In some other examples, a first gap 12 may be provided between only one of the second conductive parts 32 and the first conductive part 31.

[0120] Furthermore, referring to FIG18, the circuit board 1 also has a second gap 13, which is provided between the two first pins 24 of at least one switching assembly 2. For example, in FIG18, a second gap 13 is provided between the two first pins 24 of each switching assembly 2. Providing a second gap 13 on the circuit board 1 can increase the creepage distance between the two first pins 24 of each switching assembly 2, reduce the possibility of short circuit between the two first pins 24 in each switching assembly 2, and reduce the risk of failure of the power distribution device 106.

[0121] Furthermore, in the example shown in Figure 18, a second gap 13 is also provided between the two second pins 25 of each switch assembly 2.

[0122] In one example, the power distribution device 106 may further include a baffle 4. FIG. 19 exemplarily illustrates the structure of a baffle 4. When the circuit board 1 has a first gap 12, the baffle 4 can be inserted into the first gap 12; when the circuit board 1 has a second gap 13, the baffle 4 can be inserted into the second gap 13. In the example shown in FIG. 19, the baffle 4 is inserted into both the first gap 12 and the second gap 13, and the baffle 4 protrudes towards at least one side of the circuit board 1. For example, referring to FIG. 19, the baffle 4 protrudes towards the side of the circuit board 1 where the conductive part 3 is provided. The baffle 4 can further increase the creepage distance and further reduce the possibility of the power distribution device 106 malfunctioning.

[0123] To protect the circuit board 1 and electronic components such as the switching assemblies 2 thereon, in some examples, the power distribution device 106 may also include a protective housing 5. FIG20 exemplarily shows the structure of a protective housing 5, in which the circuit board 1, multiple switching assemblies 2, and multiple conductive parts 3 are all disposed within the protective housing 5, and the switching assemblies 2 in FIG20 are shielded by the circuit board 1. The protective housing 5 is provided with an opening 51, and the surface of the circuit board 1 with multiple conductive parts 3 faces the opening 51 of the protective housing 5.

[0124] In an example where the power distribution device 106 includes a mounting base 7, the opening 51 of the protective housing 5 can face the mounting base 7, and the busbar 64 on the mounting base 7 can pass through the opening 51 to contact or connect with the conductive part 3 on the circuit board 1. In an example where the mounting base 7 is not provided, the busbar 64 outside the protective housing 5 can pass through the opening 51 to contact or connect with the conductive part 3 on the circuit board 1.

[0125] 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 power distribution device for distributing an input current into at least one output path, characterized in that, The power distribution device includes: Circuit board; Multiple switch assemblies are arranged on the circuit board along a first direction. Each switch assembly includes two first pins, a contact for connecting or disconnecting the two first pins, two second pins, and a contact for connecting or disconnecting the two second pins. Multiple conductive parts, all of which are fixed on the circuit board; In the first direction, each of two adjacent switch assemblies has a first pin connected to the same conductive part, and each of two switch assemblies located at both ends has a first pin connected to the same conductive part. The two first pins in each switch assembly are respectively connected to different conductive parts. Furthermore, each of the two adjacent switch assemblies has a second pin connected to the same conductive part, and each of the two switch assemblies located at both ends has a second pin connected to the same conductive part. The two second pins in each switch assembly are respectively connected to different conductive parts.

2. The power distribution device according to claim 1, characterized in that, The plurality of switch assemblies are fixed on the same surface of the circuit board, and the plurality of conductive parts are fixed on the surface of the circuit board opposite to the plurality of switch assemblies. The two first pins and the two second pins of each switch assembly pass through the circuit board and are connected to the corresponding conductive parts.

3. The power distribution device according to claim 1, characterized in that, In each of the switch assemblies, the two first pins are arranged along the first direction, the two second pins are arranged along the first direction, and one of the first pins and one of the second pins are arranged along a second direction, the second direction being perpendicular to the first direction and the thickness direction of the circuit board.

4. The power distribution device according to claim 1, characterized in that, The plurality of conductive parts include a first conductive part and a plurality of second conductive parts. In the first direction, each of the two switch assemblies located at both ends has a first pin connected to the first conductive part, and each of the two adjacent switch assemblies has a first pin connected to the same second conductive part. The plurality of second conductive parts are arranged along a first direction, and the first conductive part is located on the periphery of the plurality of second conductive parts.

5. The power distribution device according to claim 4, characterized in that, The circuit board has a first gap, and in a second direction, at least one second conductive part is provided with the first gap between it and the first conductive part, and the second direction is perpendicular to the first direction and the thickness direction of the circuit board.

6. The power distribution device according to claim 5, characterized in that, The power distribution device further includes a baffle plate, which is inserted into the first gap and protrudes to the side of the circuit board where the conductive part is provided.

7. The power distribution device according to claim 4, characterized in that, The first conductive part is a trace on the circuit board, and the plurality of second conductive parts are all metal sheets; Alternatively, all of the conductive parts may be metal sheets.

8. The power distribution device according to claim 1, characterized in that, At least one of the plurality of conductive parts includes a first part, a second part, and a shunt, wherein the first part and the second part are each connected to one of the first pins, and the shunt connects the first part and the second part.

9. The power distribution device according to claim 1, characterized in that, The power distribution device further includes at least one busbar and at least one screw. The circuit board has at least one first through hole, and at least one of the plurality of conductive parts has a second through hole. Each second through hole communicates with a first through hole. Each screw passes through a first through hole and a second through hole that communicate with each other and is threaded to a busbar. Each busbar contacts a conductive part.

10. The power distribution device according to claim 1, characterized in that, The circuit board has a second gap located between the two first pins of at least one of the switching components.

11. The power distribution device according to claim 10, characterized in that, The power distribution device further includes a baffle plate, which is inserted into the second gap and protrudes to the side of the circuit board where the conductive part is provided.

12. The power distribution device according to claim 1, characterized in that, The switch assembly further includes a housing. In each switch assembly, the contacts for connecting or disconnecting the two first pins and the contacts for connecting or disconnecting the two second pins are located inside the housing. Each first pin and each second pin has a portion located inside the housing and a portion extending outside the housing.

13. The power distribution device according to claim 1, characterized in that, The switch assembly further includes a first housing and a second housing, with a gap between the first housing and the second housing. In each switch assembly, a contact for connecting or disconnecting the two first pins is located inside the first housing, with a portion of each first pin inside the first housing and a portion extending outside the first housing. Similarly, a contact for connecting or disconnecting the two second pins is located inside the second housing, with a portion of each second pin inside the second housing and a portion extending outside the second housing.

14. A charging device, characterized in that, It includes multiple power modules, multiple charging interfaces, and a power distribution device as described in any one of claims 1-13; The plurality of conductive parts are multiple connection groups, each connection group electrically connects two of the switching assemblies, each connection group includes two conductive parts, one of which is connected to two first pins and the other conductive part is connected to two second pins; The plurality of power modules are connected to the plurality of connection groups in a one-to-one correspondence, and the output terminal of each power module is electrically connected to the two conductive parts in the corresponding connection group. The plurality of charging interfaces are connected one-to-one with the plurality of connection groups, and the input end of each charging interface is electrically connected to two conductive parts in the corresponding connection group.

15. The charging device according to claim 14, characterized in that, The power distribution device further includes multiple busbar groups, each busbar group including two busbars, the multiple busbar groups are connected to the multiple connection groups one-to-one, and the two busbars of each busbar group are respectively connected to different conductive parts in the corresponding connection group; The positive and negative terminals of the output terminals of each power module are respectively connected to the two conductive parts in the corresponding connection group through different busbars in the corresponding busbar group, and the positive and negative terminals of the input terminals of each charging interface are respectively connected to different busbars in the corresponding busbar group.

Images