Power distribution device and charging equipment

Abstract

The embodiment of the utility model provides a power distribution device and charging equipment comprising the power distribution device, and relates to the technical field of energy. The power distribution device is used for distributing input current into at least one path and outputting the current, and comprises a circuit board, a plurality of switch assemblies and a plurality of conductive parts, the plurality of switch assemblies are arranged on the circuit board along a first direction, and each switch assembly comprises two first pins, a contact used for connecting or disconnecting the two first pins, two second pins and a contact used for connecting or disconnecting the two second pins; the plurality of conductive parts are fixed on the circuit board; in the first direction, the two adjacent switch assemblies are respectively provided with a first pin connected with the same conductive part, and the two switch assemblies at the two ends are respectively provided with a first pin connected with the same conductive part; moreover, two adjacent switch assemblies are respectively provided with a second pin which is connected with the same conductive part, and two switch assemblies at two ends are respectively provided with a second pin which is connected with the same conductive part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy, in particular to a power distribution device and a charging device. BACKGROUND

[0002] In a charging station, the current output by a power module usually needs to be distributed to a corresponding charging interface through a switch matrix, and the connection between the power module and the switch matrix and the connection within the switch matrix itself are mainly realized by copper bars and cables.

[0003] In the prior art, the switching devices (e.g., relays) of the switch matrix are usually placed separately, and after being connected by multiple copper bars, the copper bar lines become complex, and the number of connection lines is large, resulting in a large overall size of the switch matrix and a large occupied space. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a power distribution device and a charging device comprising the same, which reduces the use of copper bars and the space occupied by the power distribution device.

[0005] To achieve the above-mentioned purposes, the present application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a power distribution device for distributing input current into at least one path and outputting, comprising a circuit board, a plurality of switch assemblies and a plurality of conductive parts; the plurality of switch assemblies are arranged on the circuit board along a first direction, each switch assembly comprising 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 the two adjacent switch assemblies has one first pin connected to the same conductive part, each of the two switch assemblies at the two ends has one first pin connected to the same conductive part, and the two first pins in each switch assembly are connected to different conductive parts respectively; and each of the two adjacent switch assemblies has one second pin connected to the same conductive part, each of the two switch assemblies at the two ends has one second pin connected to the same conductive part, and the two second pins in each switch assembly are connected to different conductive parts respectively.

[0007] By the plurality of switch assemblies and the plurality of conductive parts, the distribution of the current can be realized, and after the power distribution device is electrically connected with the power modules and the load (for example, the charging interface), the load can call the current of the plurality of power modules. In addition, the plurality of switch assemblies are integrated on the circuit board, the integration of the power distribution device is improved, and the overall installation and overall replacement of the power distribution device are facilitated. Moreover, the plurality of switch assemblies are electrically connected by the conductive parts on the circuit board, the use of the copper bars can be reduced, the integration of the power distribution device is further improved, the volume of the power distribution device is reduced, and the occupation of the space is reduced.

[0008] In an embodiment of the present application, the plurality of switch assemblies are fixed on the same board surface of the circuit board, and the plurality of conductive parts are fixed on the board surface of the circuit board away from 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 with the corresponding conductive part.

[0009] The switch assemblies and the conductive parts are arranged on different board surfaces of the circuit board, so that the plurality of switch assemblies can be arranged in a predetermined manner on the same board surface of the circuit board, and in addition, the plurality of conductive parts can be arranged on the same board surface. Moreover, in the case that the circuit board is installed in the charging device, the switch assemblies have less influence on the external bus bars connected with the conductive parts, and the conductive parts on the same board surface can more conveniently contact and connect with the external bus bars.

[0010] In an embodiment of the present application, in each switch assembly, the two first pins are arranged along a first direction, the two second pins are arranged along the first direction, one of the first pins is arranged along a second direction with one of the second pins, and the second direction is perpendicular to the first direction and the thickness direction of the circuit board.

[0011] Since each of the two adjacent switch assemblies has one first pin to be connected with the same conductive part, and each of the two adjacent switch assemblies has one second pin to be connected with the same conductive part, the two first pins of each switch assembly are arranged on one side, and the two second pins of each switch assembly are arranged on the other side, which is conducive to the arrangement and arrangement of the conductive parts. In addition, the two first pins and the two second pins are arranged separately on different sides, which can also increase the creepage distance between the first pins and the second pins, and reduce the possibility of short circuit of the current flowing through the first pins and the current flowing through the second pins.

[0012] In an embodiment of the present application, 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 at both ends has one first pin connected with the first conductive part, and each of the two adjacent switch assemblies has one first pin connected with the same second conductive part. The plurality of second conductive parts are arranged along the first direction, and the first conductive part is located at the periphery of the plurality of second conductive parts.

[0013] The first conductive part needs to connect the two switch assemblies at both ends across a long distance, and the first conductive part is arranged at the periphery of the plurality of second conductive parts, so that the first conductive part avoids the plurality of second conductive parts, reduces the possibility of mutual interference between the first conductive part and the plurality of second conductive parts, and makes the arrangement of the plurality of conductive parts more reasonable and clear.

[0014] In an embodiment of the present application, the circuit board has a first gap, and the first gap is arranged between the first conductive part and the at least one second conductive part in the second direction, and the second direction is perpendicular to the first direction and the thickness direction of the circuit board.

[0015] The first conductive part needs to connect the two switch assemblies at both ends, so the length of the first conductive part is relatively long, and a part of the first conductive part is arranged at the side of the plurality of second conductive parts in the second direction. The first gap arranged on the circuit board can increase the creepage distance between the first conductive part and the at least one second conductive part, strengthen 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.

[0016] In an embodiment of the present application, the power distribution device further comprises a baffle, the baffle is inserted at the first gap, and the baffle protrudes to one side of the circuit board where the conductive parts are arranged.

[0017] The baffle is additionally installed at the first gap and protrudes to the side of the circuit board, which further increases the creepage distance between the first conductive part and the second conductive part, further enhances the safety protection performance of the circuit board, and reduces the possibility of failure of the power distribution device.

[0018] In an embodiment of the present application, the first conductive part is a wire on the circuit board, and the plurality of second conductive parts are metal sheets.

[0019] The plurality of second conductive parts can be metal sheets. The metal has good conductivity, and each second conductive part made of a metal sheet is connected with the corresponding two first pins, so that the electrical connection of the two first pins can be realized. In addition, since the length of the first conductive part is relatively long, the first conductive part can be a wire (metal wire) on the circuit board, thereby reducing the production cost of the circuit board. The first conductive part made of a wire can be appropriately widened in width to reduce the through-flow impedance.

[0020] In an embodiment of the present application, the plurality of conductive parts are metal sheets.

[0021] The plurality of conductive parts can each adopt the form of a metal sheet, the metal has good conductivity, and each conductive part made of a metal sheet is connected with the corresponding two first pins (or the corresponding two second pins), so that the electrical connection of the two first pins (or the two second pins) can be realized. Moreover, the conductive part in the form of a metal sheet is also convenient for connection with the busbar outside.

[0022] In an embodiment of the present application, at least one of the plurality of conductive parts comprises a first part, a second part and a shunt, the first part and the second part are each connected with one first pin, and the shunt connects the first part and the second part.

[0023] The shunt can be used for measuring current, and in an alternating current circuit or a direct current circuit, the shunt can distribute the current to each branch in a certain proportion, and the current value in the circuit can be calculated by measuring the voltage drop of the shunt. The at least one conductive part comprising the shunt facilitates sampling and detection of the current flowing through the conductive part.

[0024] In an embodiment of the present application, the power distribution device further comprises at least one busbar and at least one screw, the circuit board has at least one first through hole, at least one of the plurality of conductive parts has a second through hole, each second through hole communicates with one first through hole, each screw passes through one first through hole and one second through hole which communicate with each other and is threadedly connected with one busbar, and each busbar contacts one conductive part.

[0025] The first through hole and the second through hole which communicate with each other are for the corresponding screw to pass through, the screw can be threadedly connected with the busbar after passing through the first through hole and the second through hole, so as to fix the circuit board on the busbar and make the conductive part contact the busbar. In this way, the current input or output through the busbar can flow through the corresponding conductive part and the corresponding switch assembly, and the distribution of the current can be realized through the control of the on-off of the switch assembly.

[0026] In an embodiment of the present application, the circuit board has a second gap, and the second gap is located between the two first pins of the at least one switch assembly.

[0027] The second gap provided on the circuit board can increase the creepage distance between the two first pins of each switch assembly, thereby strengthening the safety protection performance of the circuit board, reducing the possibility of short circuit of the two first pins, making the operation of the circuit board more stable and safe, and reducing the risk of failure of the power distribution device.

[0028] In an embodiment of the present application, the power distribution device further comprises a baffle, the baffle is inserted at the second gap, and the baffle protrudes to one side of the circuit board on which the conductive part is arranged.

[0029] The additional installation of the baffle at the second gap and the protrusion of the baffle towards the side of the circuit board further increase the creepage distance between the two first pins and further reduce the possibility of failure of the power distribution device.

[0030] In an embodiment of the present application, the switch assembly further comprises 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 in the housing, each first pin and each second pin are partially located in the housing and partially extend out of the housing.

[0031] Each switch assembly can be an electronic device, for example, each switch assembly can be a relay or a contactor. In this case, the housing of the switch assembly has contacts for controlling the on-off of the circuit on the two first pins and contacts for controlling the on-off of the circuit on the two second pins, and the on-off control of the two currents is realized by setting one device.

[0032] In an embodiment of the present application, the switch assembly further comprises a first housing and a second housing, the first housing and the second housing have a gap therebetween, in each switch assembly, the contacts for connecting or disconnecting the two first pins are located in the first housing, each first pin is partially located in the first housing and partially extends out of the first housing, and the contacts for connecting or disconnecting the two second pins are located in the second housing, each second pin is partially located in the second housing and partially extends out of the second housing.

[0033] Each switch assembly can also be multiple electronic devices, for example, each switch assembly can include two relays, and for another example, each switch assembly can also include two contactors. In this case, the first housing of the switch assembly has contacts for controlling the on-off of the circuit on the two first pins, and the second housing has contacts for controlling the on-off of the circuit on the two second pins, and the on-off control of multiple currents is realized by different devices.

[0034] In a second aspect of the present application, a charging device is provided, comprising a plurality of power modules, a plurality of charging interfaces, and the power distribution device; the plurality of conductive parts are a plurality of connection groups, each connection group electrically connects two switch assemblies, each connection group includes two conductive parts and one of the conductive parts connects the two first pins and the other conductive part connects the two second pins; the plurality of power modules are connected to the plurality of connection groups one by one, the output end of each power module is electrically connected to the two conductive parts in the corresponding connection group; the plurality of charging interfaces are connected to the plurality of connection groups one by one, the input end of each charging interface is electrically connected to the two conductive parts in the corresponding connection group.

[0035] The power distribution device is electrically connected to the output end of the power conversion device and the input end of the plurality of charging interfaces. Through the power distribution device, each charging interface can directly call the current of the power module corresponding to the charging interface, or call the current of two power modules adjacent to the power module corresponding to the charging interface. The charging equipment provided in the application comprises the power distribution device described above, and therefore the charging equipment provided in the application and the power distribution device of the technical solution described above can solve the same technical problems and have the same technical effects, which will not be described herein again.

[0036] In an embodiment of the application, the power distribution device further comprises busbar groups, each busbar group comprises two busbars, the plurality of busbar groups are connected in one-to-one correspondence with the plurality of connection groups, and the two busbars of each busbar group are connected with different conductive parts in the corresponding connection group respectively; the positive electrode and the negative electrode of the output end of each power module are connected with two conductive parts in the corresponding connection group through different busbars in the corresponding busbar group respectively, and the positive electrode and the negative electrode of the input end of each charging interface are connected with different busbars in the corresponding busbar group respectively.

[0037] One busbar in each busbar group is connected with the positive electrode of the output end of the power module and the positive electrode of the input end of the charging interface, and the other busbar is connected with the negative electrode of the output end of the power module and the negative electrode of the input end of the charging interface, and each busbar is connected with the corresponding conductive part, so that the transmission of the circuit can form a loop. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 A schematic diagram of the overall structure of a charging equipment provided in an embodiment of the application;

[0039] Figure 2 A schematic diagram of the overall structure of another charging equipment provided in an embodiment of the application;

[0040] Figure 3 A topology diagram of a charging equipment provided in an embodiment of the application;

[0041] Figure 4 A schematic diagram of the structure of a power distribution device provided in an embodiment of the application;

[0042] Figure 5 A schematic diagram of the structure of a switch assembly provided in an embodiment of the application;

[0043] Figure 6 A schematic diagram of the internal structure of a switch assembly provided in an embodiment of the application;

[0044] Figure 7 A schematic diagram of the structure of another switch assembly provided in an embodiment of the application;

[0045] Figure 8A structure diagram of a conductive part provided for an embodiment of the present application;

[0046] Figure 9 A connection mode diagram of a plurality of conductive parts and a plurality of switch assemblies provided for an embodiment of the present application;

[0047] Figure 10 A partial topology diagram of a charging device provided for an embodiment of the present application;

[0048] Figure 11 Another connection mode diagram of a plurality of conductive parts and a plurality of switch assemblies provided for an embodiment of the present application;

[0049] Figure 12 A structure diagram of a second through hole provided for an embodiment of the present application;

[0050] Figure 13 A structure diagram of a first through hole provided for an embodiment of the present application;

[0051] Figure 14 A structure diagram of a first conductive part provided for an embodiment of the present application;

[0052] Figure 15 A structure diagram of a shunt in a first perspective provided for an embodiment of the present application;

[0053] Figure 16 A structure diagram of a shunt in a second perspective provided for an embodiment of the present application;

[0054] Figure 17 Another structure diagram of a first conductive part provided for an embodiment of the present application;

[0055] Figure 18 A structure diagram of a first slit and a second slit provided for an embodiment of the present application;

[0056] Figure 19 A structure diagram of a baffle provided for an embodiment of the present application;

[0057] Figure 20 A structure diagram of a protective shell provided for an embodiment of the present application.

[0058] Reference signs:

[0059] 100 - charging device; 101 - device 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 - shunt; 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 seat; 8 - screw. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0061] In the present application, the terms "first", "second", and the like are used only for the purpose of description and are intended to distinguish one element from another, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features.

[0062] In the present application, unless otherwise explicitly specified and limited, the meaning of "multiple" is two or more.

[0063] In addition, in the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0064] In the drawings of the embodiments of the present application, the entity structures of components, assemblies, and the like are represented by guide lines; the hollow structures of openings, holes, spaces, cavities, and the like are represented by guide lines with arrows.

[0065] The embodiments of the present application provide a charging device 100, which can be a charging pile, for example, an integrated charging pile, Figure 1 An exemplary structure of a charging device 100 (integrated charging pile) is shown, referring to Figure 1, the charging device 100 comprises a device cabinet 101 and at least one charging interface 102 (for example, the charging interface 102 is a charging gun), which can be plugged on the device cabinet 101 when the charging interface 102 is not in the charging action, and can be taken by the personnel at any time.

[0066] For another example, the charging device 100 can also be a split charging pile, Figure 2 An exemplary structure of a charging device 100 (split charging pile) is shown, referring to Figure 2 , the charging device 100 comprises a charging host 103, at least one charging terminal 104 and at least one charging interface 102 (for example, the charging interface 102 is a charging gun), wherein each charging terminal 104 is electrically connected with the charging host 103, and each charging terminal 104 corresponds to one or more charging interfaces 102, and the charging interface 102 can be plugged on the corresponding charging terminal 104 when the charging interface 102 is not in the charging action, so that the personnel can take it from the charging terminal 104.

[0067] In addition, referring to Figure 1 and Figure 2 , the charging device 100 further comprises a power conversion device 105, a power distribution device 106 and a cable 107. In the example that 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 be arranged in the device cabinet 101, and each charging interface 102 can be electrically connected with the power distribution device 106 through the cable 107 (for example, the gun line of the charging gun). In the example that the charging device 100 comprises the 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 arranged in the charging host 103, and each charging interface 102 is electrically connected with the corresponding charging terminal 104 through the cable 107, and the charging terminal 104 is connected with the power distribution device 106 through the cable 107.

[0068] The input end of the power conversion device 105 is used to receive alternating current, and the output end of the power conversion device 105 is used to output direct current. The power distribution device 106 is electrically connected with the output end of the power conversion device 105 and the input end of the plurality of charging interfaces 102, and is used to distribute the direct current output by the power conversion device 105 to at least one charging interface 102, and make the output end of the charging interface 102 output direct current, so as to charge the device to be charged (for example, an electric vehicle) through the charging interface 102.

[0069] Figure 3 An exemplary topology diagram of a charging device 100 is shown, referring to Figure 3, the power conversion device 105 can include a plurality of power modules 1051, for example, the plurality of power modules 1051 can 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 can include a plurality of AC-DC modules (power modules 1051) and a plurality of DC-DC modules (power modules 1051), the outputs of the plurality of AC-DC modules are connected to the inputs of the plurality of DC-DC modules through a DC bus, and the outputs of the plurality of DC-DC modules output DC power.

[0070] Referring to Figure 3 , the plurality of charging interfaces 102 can include charging interface a, charging interface b, charging interface c, …, charging interface f, the plurality of charging interfaces 102 are arranged one-to-one with the plurality of AC-DC modules, and the output of each AC-DC module is electrically connected to the input of the corresponding charging interface 102 module, and each charging interface 102 can directly call the power of the power module 1051 corresponding thereto. For example, the output of the AC-DC module a is electrically connected to the input of the corresponding charging interface a, and the charging interface a can directly call the power of the AC-DC module a.

[0071] In addition, referring to Figure 3 , the power distribution device 106 is electrically connected to the output of the power conversion device 105 and the input of the plurality of charging interfaces 102, through the power distribution device 106, each charging interface 102 can directly call the power of the power module 1051 corresponding thereto, and also can call the power of two power modules 1051 adjacent to the power module 1051 corresponding thereto. For example, the charging interface a can directly call the power of the AC-DC module a, and the charging interface a can also call the power of the AC-DC module b through the power distribution device 106, and the charging interface a can also call the power of the AC-DC module f through the power distribution device 106.

[0072] In the case that the charging interface a directly calls the power of the AC-DC module a, if the charging interface a outputs a current of 10A (only for example, not limiting the output current of the charging interface a), then in the case that the charging interface a simultaneously calls the power of the AC-DC module a and the power of the AC-DC module b, the charging interface a can output a current of 20A, and for the same reason, in the case that the charging interface a simultaneously calls the power of the AC-DC module a and the power of the AC-DC module f, the charging interface a can also output a current of 20A. In the case that the charging interface a simultaneously calls the power of the AC-DC module a, the power of the AC-DC module b, and the power of the AC-DC module f, the charging interface a can output a current of 30A.

[0073] 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.

[0074] This application also provides a power distribution device 106. Figure 4 An exemplary power distribution device 106 is shown, with reference to Figure 4 The power distribution device 106 includes a circuit board 1 and a plurality of switch assemblies 2. The plurality of switch assemblies 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 can be the length direction of the surface of the circuit board 1.

[0075] Figure 5 An exemplary structure of a switch assembly 2 is shown. Figure 6 The internal structure of this type of switch assembly 2 is shown, with reference to Figure 5 and Figure 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.

[0076] exist Figure 5 and Figure 6 In the example shown, 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, such as a relay or a contactor. By providing two contacts 26 (first and second contacts) within a single device, control of the on / off state of two current paths can be achieved.

[0077] In some other examples, Figure 7 An exemplary diagram shows the structure of another switch component 2, with reference to Figure 7The switch assembly 2 further comprises a first housing 22 and a second housing 23, and a gap is formed between the first housing 22 and the second housing 23, for example, the first housing 22 and the second housing 23 are arranged in a spaced manner. In each switch assembly 2, the contacts 26 for connecting or disconnecting the two first pins 24 are located in the first housing 22, and each first pin 24 is partially located in the first housing 22 and partially extends out of the first housing 22. In addition, the contacts 26 for connecting or disconnecting the two second pins 25 are located in the second housing 23, and each second pin 25 is partially located in the second housing 23 and partially extends out of the second housing 23.

[0078] That is, in the example shown, Figure 7 In the example shown, each switch assembly 2 can also include a plurality of electronic devices, for example, each switch assembly 2 can include two relays, and for another example, each switch assembly 2 can also include two contactors. In this case, the on-off control of different currents is realized by different devices.

[0079] In addition, the power distribution device 106 further comprises a plurality of conductive parts 3, Figure 8 An example of the structure of the conductive part 3 is shown, Figure 8 The plurality of conductive parts 3 are fixed on the circuit board 1, for example, the plurality of switch assemblies 2 are fixed on the same board surface of the circuit board 1, and the plurality of conductive parts 3 are fixed on the board surface of the circuit board 1 away from the plurality of switch assemblies 2. Figure 8 The switch assembly 2 in Figure 5 Or Figure 6 The switch assembly 2 shown, 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 (for example, welded) with the corresponding conductive part 3.

[0080] The conductive part 3 is any structure capable of conducting electricity, for example, the conductive part 3 can be a metal sheet (for example, a copper sheet, an aluminum sheet, etc.), in this example, the conductive part 3 can be bonded, welded or crimped on the circuit board 1. For another example, the conductive part 3 can also be a wire (or metal wire) on the circuit board 1.

[0081] Figure 9 An example of the connection mode of the plurality of conductive parts 3 and the plurality of switch assemblies 2 is shown, Figure 9 The dashed box in Refers to the plurality of switch assemblies 2, which includes switch assembly a, switch assembly b, …, switch assembly f. The plurality of conductive parts 3 includes conductive part a, conductive part b, conductive part c, conductive part d, conductive part e, conductive part f, and so on.

[0082] In the first direction, two switch assemblies 2 at both ends each have one first pin 24 connected to the same conductive part 3, for example, one first pin 24 of switch assembly a and one first pin 24 of switch assembly f are both connected to conductive part a. Two switch assemblies 2 at both ends each have one second pin 25 connected to the same conductive part 3, for example, one second pin 25 of switch assembly a and one second pin 25 of switch assembly f are both connected to conductive part b.

[0083] In the first direction, two switch assemblies 2 adjacent to each other each have one first pin 24 connected to the same conductive part 3, for example, one first pin 24 of switch assembly a and one first pin 24 of switch assembly b are both connected to conductive part c. Two switch assemblies 2 adjacent to each other each have one second pin 25 connected to the same conductive part 3, for example, one second pin 25 of switch assembly a and one second pin 25 of switch assembly b are both connected to conductive part d.

[0084] In addition, two first pins 24 in each switch assembly 2 are respectively connected to different conductive parts 3, two second pins 25 in each switch assembly 2 are respectively connected to different conductive parts 3, that is, each switch assembly 2 is connected to four conductive parts 3. Each conductive part 3 can be used to electrically connect a structure for inputting or outputting current, in the case of connecting two first pins 24 through the first contact, the current path between the two conductive parts 3 corresponding to the two first pins 24 is turned on, in the case of disconnecting two first pins 24 through the first contact, the current path between the two conductive parts 3 corresponding to the two first pins 24 is turned off. Similarly, in the case of connecting two second pins 25 through the second contact, the current path between the two conductive parts 3 corresponding to the two second pins 25 is turned on, in the case of disconnecting two second pins 25 through the second contact, the current path between the two conductive parts 3 corresponding to the two second pins 25 is turned on.

[0085] Among them, a plurality of conductive parts 3 can be divided into a plurality of connection groups, each connection group electrically connects two switch assemblies 2, each connection group includes two conductive parts 3 and one of the conductive parts 3 connects two first pins 24, and the other conductive part 3 connects two second pins 25. For example, one of the plurality of connection groups can include conductive part a and conductive part b, another of the plurality of connection groups can include conductive part c and conductive part d, and another of the plurality of connection groups can include conductive part e and conductive part f.

[0086] For example, referring back to the two conductive parts 3 marked in Figure 3 , Figure 3 , they can be regarded as one of the connection groups, and the other connection groups are in Figure 3In the charging device 100, the plurality of power modules 1051 are one-to-one corresponding to the plurality of connection groups, and the output end of each power module 1051 is electrically connected to two conductive parts 3 in the corresponding connection group; the plurality of charging interfaces 102 are one-to-one corresponding to the plurality of connection groups, and the input end of each charging interface 102 is electrically connected to two conductive parts 3 in the corresponding connection group.

[0087] In the charging device 100, the plurality of power modules 1051 are one-to-one corresponding to the plurality of connection groups, and the output end of each power module 1051 is electrically connected to two conductive parts 3 in the corresponding connection group; the plurality of charging interfaces 102 are one-to-one corresponding to the plurality of connection groups, and the input end of each charging interface 102 is electrically connected to two conductive parts 3 in the corresponding connection group.

[0088] For example, referring to Figure 3 , the output end of each AC-DC module is electrically connected to the input end of the corresponding charging interface 102 module through the corresponding bus bar group 6, that is, the output end (positive electrode) of each AC-DC module is electrically connected to the input end (positive electrode) of the corresponding charging interface 102 module through one of the bus bar groups 6, and the output end (negative electrode) of each AC-DC module is electrically connected to the input end (negative electrode) of the corresponding charging interface 102 module through the other bus bar group 6.

[0089] In the charging device 100, the plurality of power modules 1051 are one-to-one corresponding to the plurality of connection groups, and the output end of each power module 1051 is electrically connected to two conductive parts 3 in the corresponding connection group; the plurality of charging interfaces 102 are one-to-one corresponding to the plurality of connection groups, and the input end of each charging interface 102 is electrically connected to two conductive parts 3 in the corresponding connection group.

[0090] Figure 10 An exemplary partial topological diagram of the charging device 100 is shown (the partial topological diagram of the charging device 100 can be understood as Figure 10 understood as Figure 4 , wherein Figure 10 The positions of the switch assembly a and the switch assembly f are shown in Figure 10 The partial structure of the charging device 100 shown in Figure 10 , the plurality of bus bar groups 6 include a first bus bar group 61, a second bus bar group 62, and a third bus bar group 63.

[0091] The first busbar group 61 includes busbar a and busbar b. The busbar a includes fixedly connected metal bar a1 and metal bar a2. The metal bar a1 is electrically connected to the output end (positive electrode) of the AC-DC module a, and the metal bar a2 is electrically connected to the input end (positive electrode) of the charging interface a. The busbar b includes fixedly connected metal bar b1 and metal bar b2. The metal bar b1 is electrically connected to the output end (negative electrode) of the AC-DC module a, and the metal bar b2 is electrically connected to the input end (negative electrode) of the charging interface a. In addition, the metal bar a1 is connected with the conductive part a, that is, the conductive part a is connected with the busbar a; the metal bar b1 is connected with the conductive part b, that is, the conductive part b is connected with the busbar b. That is, the two busbars 64 (busbar a and busbar b) of the first busbar group 61 are respectively connected with different conductive parts 3 (conductive part a and conductive part b) in the corresponding connection group.

[0092] The second busbar group 62 includes busbar c and busbar d. The busbar c includes fixedly connected metal bar c1 and metal bar c2. The metal bar c1 is electrically connected to the output end (positive electrode) of the AC-DC module b, and the metal bar c2 is electrically connected to the input end (positive electrode) of the charging interface b. The busbar d includes fixedly connected metal bar d1 and metal bar d2. The metal bar d1 is electrically connected to the output end (negative electrode) of the AC-DC module b, and the metal bar d2 is electrically connected to the input end (negative electrode) of the charging interface b. In addition, the metal bar c1 is connected with the conductive part c, that is, the conductive part c is connected with the busbar c; the metal bar d1 is connected with the conductive part d, that is, the conductive part d is connected with the busbar d. That is, the two busbars 64 (busbar c and busbar d) of the second busbar group 62 are respectively connected with different conductive parts 3 (conductive part c and conductive part d) in the corresponding connection group.

[0093] The third busbar group 63 includes busbar e and busbar f. The busbar e includes fixedly connected metal bar e1 and metal bar e2. The metal bar e1 is electrically connected to the output end (positive electrode) of the AC-DC module f, and the metal bar e2 is electrically connected to the input end (positive electrode) of the charging interface f. The busbar f includes fixedly connected metal bar f1 and metal bar f2. The metal bar f1 is electrically connected to the output end (negative electrode) of the AC-DC module f, and the metal bar f2 is electrically connected to the input end (negative electrode) of the charging interface f. In addition, the metal bar e1 is connected with the conductive part e, that is, the conductive part e is connected with the busbar e; the metal bar f1 is connected with the conductive part f, that is, the conductive part f is connected with the busbar f. That is, the two busbars 64 (busbar e and busbar f) of the third busbar group 63 are respectively connected with different conductive parts 3 (conductive part e and conductive part f) in the corresponding connection group.

[0094] Referring to Figure 9 and Figure 10The switch assembly a can control the on-off of the conductive part a and the conductive part c, and the conductive part a and the conductive part c are connected to a busbar 64 (busbar a and busbar c) respectively, that is, the switch assembly a can control the on-off of the circuit between the busbar a and the busbar c. The switch assembly a can also control the on-off of the conductive part b and the conductive part d, and the conductive part b and the conductive part d are connected to a busbar 64 (busbar b and busbar d) respectively, that is, the switch assembly a can control the on-off of the circuit between the busbar b and the busbar d.

[0095] Similarly, the switch assembly f can control the on-off of the conductive part a and the conductive part e, and the conductive part a and the conductive part e are connected to a busbar 64 (busbar a and busbar e) respectively, that is, the switch assembly f can control the on-off of the circuit between the busbar a and the busbar e. The switch assembly f can also control the on-off of the conductive part b and the conductive part f, and the conductive part b and the conductive part f are connected to a busbar 64 (busbar b and busbar f) respectively, that is, the switch assembly f can control the on-off of the circuit between the busbar b and the busbar f.

[0096] The current output from the AC-DC module a can be transmitted to the positive electrode of the charging interface a through the metal bar a1 and the metal bar a2, and then flow through the negative electrode of the charging interface a, the metal bar b2 and the metal bar b1 to return to the negative electrode of the AC-DC module a. The current output from the AC-DC module b can be transmitted to the positive electrode of the charging interface b through the metal bar c1 and the metal bar c2, and then flow through the negative electrode of the charging interface b, the metal bar d2 and the metal bar d1 to return to the negative electrode of the AC-DC module b. The current output from the AC-DC module f can be transmitted to the positive electrode of the charging interface f through the metal bar e1 and the metal bar e2, and then flow through the negative electrode of the charging interface f, the metal bar f2 and the metal bar f1 to return to the negative electrode of the AC-DC module f.

[0097] When the charging interface a needs to call the power of the AC-DC module b, the current output from the AC-DC module b can be transmitted to the switch assembly a through the metal bar c1 and the conductive part c, and the current on the metal bar c1 will be transmitted to the metal bar a1 through the switch assembly a, and then transmitted to the positive electrode of the charging interface a through the metal bar a2. In order to form a loop, the switch assembly a will also conduct the current path between the conductive part b and the conductive part d, that is, the switch assembly a conducts the current path between the metal bar b1 and the metal bar d1. The current transmitted from the positive electrode of the AC-DC module b to the positive electrode of the charging interface a flows through the negative electrode of the charging interface a, the metal bar b2, the metal bar b1, the conductive part b, the switch assembly a, the conductive part d and the metal bar d1 to return to the negative electrode of the AC-DC module b. In this way, the current input into the charging interface a includes current from the AC-DC module a and current from the AC-DC module b.

[0098] When the charging interface a needs to call the power of the AC-DC module f, the current output from the AC-DC module f can be transmitted to the switch assembly f through the metal row e1 and the conductive part e, the switch assembly f turns on the current path between the conductive part e and the conductive part a, that is, the switch assembly f turns on the current path between the metal row e1 and the metal row a1. The current on the metal row e1 is transmitted to the metal row a1 through the switch assembly f, and then transmitted to the positive electrode of the charging interface a through the metal row a2. In order to form a loop, the switch assembly f also turns on the current path between the conductive part b and the conductive part f, that is, the switch assembly f turns on the current path between the metal row b1 and the metal row f1. The current transmitted from the positive electrode of the AC-DC module f to the positive electrode of the charging interface a flows through the negative electrode of the AC-DC module f, the negative electrode of the charging interface a, the metal row b2, the metal row b1, the conductive part b, the switch assembly f, the conductive part f and the metal row f1, and returns to the negative electrode of the AC-DC module f. In this way, the current input into the charging interface a includes the current from the AC-DC module a and the current from the AC-DC module f.

[0099] For another example, in addition to calling the power of the AC-DC module b, the charging interface b can also call the power of the AC-DC module a and the power of the AC-DC module c through the power distribution device 106 of the application, and the principle will not be repeated here.

[0100] In some other examples, the power module 1051, the charging interface 102 and the corresponding connection group can also be electrically connected through a cable.

[0101] Among them, Figure 9 and Figure 10 The switch assembly 2 in Figure 6 The switch assembly 2 in Figure 7 For example, Figure 11 Exemplary shows another connection mode of a plurality of conductive parts 3 and a plurality of switch assemblies 2, wherein the plurality of switch assemblies 2 are arranged along a first direction, and the first shell 22 and the second shell 23 of each switch assembly 2 are arranged along a second direction.

[0102] In some examples, in order to stably connect and contact the conductive part 3 and the busbar 64, the circuit board 1 has a plurality of first through holes 11, and at least part (one or more conductive parts 3) of the plurality of conductive parts 3 has a second through hole 35, Figure 12 Exemplary shows a structure of a second through hole 35 Figure 12 Each conductive part 3 is provided with a second through hole 35, Figure 13 Exemplary shows a structure of a first through hole 11, for reference Figure 13The power distribution device 106 can further include a mounting base 7 and a plurality of screws 8 (bolts or screws). The busbar 64 is fixed on the mounting base 7. Each second through hole 35 is in communication with a first through hole 11. The first through hole 11 and the second through hole 35 in communication with each other are used for the screw 8 to pass through. After the screw 8 passes through the first through hole 11 and the second through hole 35, the screw 8 is screwed with the busbar 64. Alternatively, in some other examples, after the screw 8 passes through the first through hole 11, the second through hole 35 and the busbar 64, the screw 8 is screwed with the mounting base 7. The screw 8 can lock the conductive part 3 and the corresponding busbar 64, so that the contact and connection between the two are more stable.

[0103] In some other examples, only a part of the plurality of conductive parts 3 is provided with the second through hole 35. In this example, the number of first through holes 11 on the circuit board 1 is equal to the number of second through holes 35.

[0104] In some other examples, the conductive part 3 can also not be provided with the second through hole 35. The screw 8 can 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 screwed with the mounting base 7.

[0105] In some other examples, the power distribution device 106 can include the screw 8 but not the mounting base 7. The screw 8 directly locks the circuit board 1 and the busbar 64.

[0106] Figure 14 The arrangement of the two first pins 24 and the two second pins 25 is shown by way of example. Since each of the two adjacent switch assemblies 2 has one first pin 24 that needs to be connected to the same conductive part 3, and each of the two adjacent switch assemblies 2 has one second pin 25 that needs to be connected to the same conductive part 3, in order to facilitate the arrangement of the conductive part 3, with reference to Figure 14 The two first pins 24 can be arranged in a first direction, and the two second pins 25 can be arranged in the first direction. One of the first pins 24 and one of the second pins 25 can be arranged in a second direction, which is perpendicular to the first direction and the thickness direction of the circuit board 1. That is, the two first pins 24 and the two second pins 25 of each switch assembly 2 are arranged on different sides of the switch assembly 2, which is conducive to the arrangement and setting of the plurality of 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, and reduce the possibility of short circuit of the current flowing through the first pin 24 and the current flowing through the second pin 25.

[0107] In some examples, with reference to Figure 14 The plurality of conductive parts 3 includes a first conductive part 31 Figure 9The conductive part a in the first conductive part 31 and the plurality of second conductive parts 32, in the first direction, two switch assemblies 2 at both ends each have a first pin 24 connected to the first conductive part 31, and adjacent two switch assemblies 2 each have 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 at the periphery of the plurality of second conductive parts 32, for example, the first conductive part 31 is in the shape of "C", and part of the first conductive part 31 is located at 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, and making the arrangement of the plurality of conductive parts 3 more reasonable and clear.

[0108] In addition, referring to Figure 14 , the plurality of conductive parts 3 further includes a third conductive part 33 Figure 9 The conductive part b in the third conductive part 33 and the plurality of fourth conductive parts 34, in the first direction, two switch assemblies 2 at both ends each have a second pin 25 connected to the third conductive part 33, and adjacent two switch assemblies 2 each have 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 at the periphery of the plurality of fourth conductive parts 34, for example, the third conductive part 33 is in the shape of "C", and part of the third conductive part 33 is located at the side of the plurality of fourth conductive parts 34 in the second direction.

[0109] Among them, the shapes of the plurality of second conductive parts 32 can be the same, and the shapes of the plurality of second conductive parts 32 can be different from each other. The shapes of the plurality of third conductive parts 33 can be the same, and the shapes of the plurality of third conductive parts 33 can be different from each other.

[0110] The conductive part 3 can be any suitable structure, for example, metal has good conductivity, and the plurality of conductive parts 3 can all adopt the form of metal sheets, each conductive part 3 made of a metal sheet is connected to the corresponding two first pins 24 (or two second pins 25), which can realize the electrical connection of the two first pins 24 (or two second pins 25). And the metal sheet form of the conductive part 3 is also convenient for connecting with the busbar 64 outside, so that the current on the busbar 64 is input to the circuit board 1 or output from the circuit board 1 through the conductive part 3.

[0111] In Figure 14 the example shown, each conductive part 3 is a metal sheet, for example, the plurality of second conductive parts 32 and the plurality of third conductive parts 33 are small area metal sheets, and the first conductive part 31 and the third conductive part 33 are large area metal sheets spanning a long distance.

[0112] In other examples, at least one of the plurality of conductive parts 3 comprises a first portion 36, a second portion 37 and a shunt 38, Figure 15 An example shows the structure of a shunt 38 in a first perspective, which is the perspective facing the board surface of the circuit board 1 away from the switch assembly 2 (the position of the switch assembly 2 can be used for reference Figure 14 ), in Figure 15 The example shown in the example, the shunt 38 is located on the same side of the circuit board as the switch assembly 2, so in Figure 15 The perspective of the shunt 38 is blocked by the circuit board 1 and represented by a dashed line, the shunt 38 is arranged beside the switch assembly 2, the shunt 38 can be "C" type or arc-shaped, and the shunt 38 is inserted on the circuit board 1, two pins of the shunt 38 pass through the circuit board 1 and are connected with the first portion 36 and the second portion 37, wherein the first portion 36 and the second portion 37 can each be a metal sheet (for example, a copper bar or an aluminum bar, etc.), in Figure 15 The example shown in the example, the plurality of conductive parts 3 electrically connected with the second pin 25 each comprises a shunt 38, therefore, the first portion 36 and the second portion 37 are connected with one second pin 25 respectively, and the shunt 38 connects the first portion 36 and the second portion 37.

[0113] Figure 16 An example shows the structure of the shunt 38 in a second perspective in Figure 15 , wherein the second perspective is the perspective facing the board surface of the circuit board 1 on which the switch assembly 2 is arranged, in order to facilitate observation of the shunt 38, Figure 16 The circuit board 1, the switch assembly 2 and other structures are hidden in Figure 16 , for reference , it can be observed intuitively that the shunt 38 connects the first portion 36 and the second portion 37.

[0114] The shunt 38 can be used for measuring current, in an alternating current circuit or a direct current circuit, the shunt 38 can distribute current to each branch in a certain proportion, by measuring the voltage drop of the shunt 38, the current value in the circuit can be calculated. At least one conductive part 3 comprises a shunt 38, which facilitates sampling and detection of the current flowing through the conductive part 3. In other examples, the first portion 36 and the second portion 37 of one of the conductive parts 3 are connected with one first pin 24 respectively, and the shunt 38 connects the first portion 36 and the second portion 37.

[0115] Figure 17 An example shows another structure of the first conductive part 31, since the first conductive part 31 is longer, in Figure 17In the shown example, the first conductive part 31 can be a trace (metal line) on the circuit board 1, and the plurality of second conductive parts 32 can be metal pieces, thereby reducing the production cost. In addition, the first conductive part 31 made of a trace can be appropriately widened in width, thereby reducing the flow impedance. Referring to Figure 17 , the third conductive part 33 can also be a trace on the circuit board 1, and the plurality of fourth conductive parts 34 can be metal pieces.

[0116] Since the first conductive part 31 has a long length and is located at the periphery of the plurality of second conductive parts 32, a part of the first conductive part 31 can be located at the side of the plurality of second conductive parts 32 in the second direction. In some examples, the circuit board 1 has a first gap 12, Figure 18 The example shows a structure of a first gap 12. In the second direction, at least one second conductive part 32 is provided with a first gap 12 from the first conductive part 31, for example, Figure 18 In the example, each second conductive part 32 is provided with a first gap 12 from the first conductive part 31. In addition, each fourth conductive part 34 is also provided with a first gap 12 from the third conductive part 33.

[0117] Providing the 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, reducing the possibility of short circuit between the first conductive part 31 and the second conductive part 32, and reducing the possibility of short circuit between the third conductive part 33 and the fourth conductive part 34, so that the circuit board 1 operates more stably and safely, and the risk of failure of the power distribution device 106 is reduced.

[0118] In other examples, only one second conductive part 32 can be provided with a first gap 12 from the first conductive part 31.

[0119] In addition, referring to Figure 18 , the circuit board 1 also has a second gap 13, and the second gap 13 is provided between the two first pins 24 of at least one switch assembly 2. For example, Figure 18 In the example, the second gap 13 is provided between the two first pins 24 of each switch assembly 2. Providing the second gap 13 on the circuit board 1 can increase the creepage distance between the two first pins 24 of each switch assembly 2, thereby reducing the possibility of short circuit between the two first pins 24 of each switch assembly 2, and reducing the risk of failure of the power distribution device 106.

[0120] In addition, Figure 18 In the shown example, the second gap 13 is also provided between the two second pins 25 of each switch assembly 2.

[0121] In an example, the power distribution device 106 can further comprise a baffle 4, Figure 19 An example shows a structure of the baffle 4, which can be inserted at the first slit 12 when the circuit board 1 is provided with the first slit 12, and which can be inserted at the second slit 13 when the circuit board 1 is provided with the second slit 13. Wherein, the baffle 4 protrudes towards at least one side of the circuit board 1, for example, referring to Figure 19 In the example shown, the first slit 12 and the second slit 13 are both inserted with the baffle 4, and the baffle 4 protrudes towards at least one side of the circuit board 1, for example, referring to Figure 19 The baffle 4 protrudes towards the side of the circuit board 1 where the conductive part 3 is arranged. The baffle 4 can further increase the creepage distance and further reduce the possibility of failure of the power distribution device 106.

[0122] In order to protect the circuit board 1 and the electronic components such as the switch assembly 2 thereon, in some examples, the power distribution device 106 can further comprise a protective shell 5, Figure 20 An example shows a structure of the protective shell 5, wherein the circuit board 1, the plurality of switch assemblies 2 and the plurality of conductive parts 3 are arranged in the protective shell 5, Figure 20 The switch assembly 2 in the circuit board 1 is shielded. The protective shell 5 is provided with an opening 51, and the board surface of the circuit board 1 where the plurality of conductive parts 3 are arranged faces the opening 51 of the protective shell 5.

[0123] In the example where the power distribution device 106 comprises the mounting seat 7, the opening 51 of the protective shell 5 can face the mounting seat 7, and the busbar 64 on the mounting seat 7 can pass through the opening 51 to contact or connect with the conductive part 3 on the circuit board 1. In the example without the mounting seat 7, the busbar 64 outside the protective shell 5 can pass through the opening 51 to contact or connect with the conductive part 3 on the circuit board 1.

[0124] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which shall be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A power distribution device for distributing an input current into at least one path and outputting, characterized by, The power distribution device comprises: a circuit board; a plurality of switch assemblies arranged on the circuit board along a first direction, each of the switch assemblies comprising 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; a plurality of conductive parts, each of the conductive parts being fixed on the circuit board; in the first direction, each of two adjacent switch assemblies has one of the first pins connected to one of the conductive parts, each of two end switch assemblies has one of the first pins connected to one of the conductive parts, and the two first pins in each of the switch assemblies are connected to different conductive parts, respectively; and, in the first direction, each of two adjacent switch assemblies has one of the second pins connected to one of the conductive parts, each of two end switch assemblies has one of the second pins connected to one of the conductive parts, and the two second pins in each of the switch assemblies are connected to different conductive parts, respectively.

2. The power distribution apparatus of claim 1, wherein, The plurality of switch assemblies are fixed on the same surface of the circuit board, the plurality of conductive parts are fixed on the surface of the circuit board away from the plurality of switch assemblies, and the two first pins and the two second pins of each of the switch assemblies pass through the circuit board and are connected to corresponding conductive parts.

3. The power distribution apparatus of claim 1, wherein, 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, one of the first pins and one of the second pins are arranged along a second direction, and the second direction is perpendicular to the first direction and the thickness direction of the circuit board.

4. The power distribution apparatus of claim 1, wherein, The plurality of conductive parts comprise a first conductive part and a plurality of second conductive parts, in the first direction, each of two end switch assemblies has one of the first pins connected to the first conductive part, and each of two adjacent switch assemblies has one of the first pins connected to one of the second conductive parts; the plurality of second conductive parts are arranged along a first direction, and the first conductive part is located at the periphery of the plurality of second conductive parts.

5. The power distribution apparatus of claim 4, wherein, The circuit board has a first gap, in a second direction, at least one of the second conductive parts and the first conductive part are provided with the first gap, and the second direction is perpendicular to the first direction and the thickness direction of the circuit board.

6. The power distribution apparatus of claim 5, wherein, The power distribution device further comprises a baffle, the baffle is inserted at the first gap, and the baffle protrudes to the side of the circuit board provided with the conductive parts.

7. The power distribution apparatus of claim 4, wherein, The first conductive part is a trace on the circuit board, and the plurality of second conductive parts are metal sheets. Alternatively, the plurality of conductive parts are metal sheets.

8. The power distribution apparatus of claim 1, wherein, At least one of the plurality of conductive parts comprises a first part, a second part, and a shunt, the first part and the second part are connected to one of the first pins, respectively, and the shunt connects the first part and the second part.

9. The power distribution apparatus of claim 1, wherein, The power distribution device further comprises at least one busbar and at least one screw, the circuit board has at least one first through hole, at least one of the plurality of conductive parts has a second through hole, each of the second through holes communicates with one of the first through holes, each of the screws passes through one of the first through holes and one of the second through holes in communication with each other and is screwed with one of the busbars, and each of the busbars contacts one of the conductive parts.

10. The power distribution apparatus of claim 1, wherein, The circuit board has a second gap between the two first pins of at least one of the switch assemblies.

11. The power distribution apparatus of claim 10, wherein, The power distribution device further comprises a baffle, the baffle is inserted at the second gap, and the baffle protrudes to one side of the circuit board where the conductive parts are arranged.

12. The power distribution apparatus of claim 1, wherein, The switch assembly further comprises a housing, in each of the switch assemblies, contacts for connecting or disconnecting the two first pins and contacts for connecting or disconnecting the two second pins are located in the housing, and each of the first pins and each of the second pins is partially located in the housing and partially extends out of the housing.

13. The power distribution apparatus of claim 1, wherein, The switch assembly further comprises a first housing and a second housing, the first housing and the second housing have a gap therebetween, in each of the switch assemblies, contacts for connecting or disconnecting the two first pins are located in the first housing, each of the first pins is partially located in the first housing and partially extends out of the first housing, and contacts for connecting or disconnecting the two second pins are located in the second housing, each of the second pins is partially located in the second housing and partially extends out of the second housing.

14. A charging device, characterized by The power distribution device further comprises a plurality of power modules, a plurality of charging interfaces, and the power distribution device of any one of claims 1-13. The plurality of conductive parts are a plurality of connection groups, each of the connection groups electrically connects two of the switch assemblies, each of the connection groups comprises two of the conductive parts and one of the conductive parts connects two of the first pins, and the other of the conductive parts connects two of the second pins. The plurality of power modules are connected to the plurality of connection groups one by one, and an output end of each of the power modules is electrically connected to two of the conductive parts in a corresponding connection group. The plurality of charging interfaces are connected to the plurality of connection groups one by one, and an input end of each of the charging interfaces is electrically connected to two of the conductive parts in a corresponding connection group.

15. The charging apparatus according to claim 14, characterized by, The power distribution device further comprises a plurality of busbar groups, each of the busbar groups comprises two busbars, the plurality of busbar groups are connected to the plurality of connection groups one by one, and the two busbars of each of the busbar groups are connected to different conductive parts in a corresponding connection group, respectively. The positive and negative poles of the output end of each of the power modules are connected to the two conductive parts in the corresponding connection group through different busbars in the corresponding busbar group, respectively, and the positive and negative poles of the input end of each of the charging interfaces are connected to different busbars in the corresponding busbar group, respectively.

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