Connector, power supply system and vehicle

Abstract

The application provides a connector, a power supply system and a vehicle. The connector comprises a shell, a busbar, a first branch line and a first plug-in terminal. One end of the busbar is located in the shell, and the other end of the busbar is located outside the shell and is used for electrically connecting with a power supply. One end of the first branch line is located in the shell and is electrically connected with one end of the busbar, and the other end of the first branch line is located outside the shell and is used for electrically connecting with a first load. One end of the first plug-in terminal is located in the shell and is electrically connected with one end of the busbar, and the other end of the first plug-in terminal is used for being plugged on a second load and being electrically connected with the second load. In the application, the connector is arranged, so that the number of connecting components on the second load can be reduced, the size of the second load can be reduced, and the cost can be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connectors, in particular to a connector, a power supply system and a vehicle. BACKGROUND

[0002] The vehicle-mounted power supply system is used for supplying power to vehicle-mounted loads, and the vehicle-mounted power supply system comprises a battery pack and a power distribution unit. The power distribution unit is integrated with electrical components such as a vehicle-mounted charger and a controller, so that the number of vehicle-mounted loads connected to the power distribution unit increases. When the battery pack supplies power to each vehicle-mounted load through the power distribution unit, due to the large number of vehicle-mounted loads, a plurality of connector structures are currently arranged on the power distribution unit, and different loads are supplied with power through independent connector interfaces, which results in a large number of interfaces on the power distribution unit and the electrical component modules, and the components have a large volume, which is not conducive to the vehicle layout. In addition, complex wiring and large volume also lead to rising costs. SUMMARY

[0003] The present application provides a connector, a power supply system and a vehicle.

[0004] In a first aspect, the present application provides a connector, which comprises a housing, a busbar, a first branch and a first plug-in terminal. One end of the busbar is located in the housing, and the other end of the busbar is located outside the housing and is used for electrical connection with a power supply. One end of the first branch is located in the housing and is electrically connected with one end of the busbar, and the other end of the first branch is located outside the housing and is used for electrical connection with a first load. One end of the first plug-in terminal is located in the housing and is electrically connected with one end of the busbar, and the other end of the first plug-in terminal is used for plugging into a second load and electrically connecting with the second load.

[0005] In the present application, when the second load is a power distribution unit, the connector divides the circuit into two paths. One path of current directly supplies power to a high-power first load through the first branch without passing through the power distribution unit, and the other path of current supplies power to a third load and other low-power loads through the first plug-in terminal and the power distribution unit. The power distribution unit only needs to be provided with a circuit board, and the metal layer wiring on the circuit board is used to supply power to the third load and other low-power loads. The metal layer wiring only needs to carry a small current, so the power distribution unit does not need to be provided with a copper bar, which saves costs. At the same time, the metal layer wiring has good isolation and a small size. The arrangement of the connector optimizes the wiring layout inside the power distribution unit, reduces the size of the power distribution unit, and reduces costs.

[0006] Secondly, the connector is located outside the power distribution unit, the busbar for connecting the power supply and the first branch line for connecting the first load are located outside the power distribution unit, the connector does not occupy the internal space of the power distribution unit, the size of the power distribution unit is reduced, and when the power distribution unit is applied to a vehicle, the reduced volume of the power distribution unit is beneficial to the overall layout of the vehicle.

[0007] Thirdly, the power supply supplies power to the first load and the power distribution unit through the connector, the number of external connecting components of the power distribution unit is reduced, the cost is saved, and the overall size of the power distribution unit and the connector is reduced, so that the power distribution unit and the connector can be adapted to various small-sized scenes.

[0008] Fourthly, if the connector is not provided, when a large current is passed through the copper bar inside the power distribution unit, the loop of the large current in the power distribution unit passes through the power distribution unit in a way that one connection component enters and one connection component exits to supply power to the first load, and the connection components must be large-current connection components, such as 150A connection components and 250A connection components. In the present application, only a small current needs to pass through the power distribution unit, and when the connector is connected to the power distribution unit, the connector can be a small-current connector, such as an 80A connector. The reduced specification of the connector can save costs.

[0009] In a possible implementation, the extension direction of the part of the busbar inside the shell is perpendicular to the extension direction of the first plug-in terminal, and the busbar, the first branch line and the first plug-in terminal are in a "T" shape. This arrangement can reduce the overall volume of the connector and the second load.

[0010] In a possible implementation, the shell comprises a shell body and a plug-in shell part, one end of the busbar is located in the shell body, the plug-in shell part is in communication with the internal space of the shell body, the first plug-in terminal is located in the internal space of the plug-in shell part, and the plug-in shell part is used to be fixed with the second load. In this implementation, the shell body is used to protect the part where the busbar and the first branch line and the first plug-in terminal are connected, the plug-in shell part is used to protect the first plug-in terminal from being interfered by external components, and the plug-in shell part is used to be fixed with the second load, so that the connector can be stably fixed on the second load.

[0011] In a possible implementation, a connection port is arranged on the second load, and the plug-in shell part and the first plug-in terminal are fixed with the connection port. In this application, the plug-in shell part and the first plug-in terminal can constitute a male connection part, and the connection port on the second load can be a female connection part, and the male connection part and the female connection part are fixed by cooperation. The structure of the plug-in shell part and the connection port can be matched to facilitate plug-in fixation.

[0012] In a possible implementation, the shell body comprises a cover plate, which is located on a side of the shell body away from the plug-in shell part, and the cover plate is detachably connected with the shell body. By detaching the cover plate, the internal components of the shell body are facilitated to be installed, and when the internal components of the shell body are damaged, the cover plate is detached to facilitate maintenance and replacement.

[0013] In a possible implementation, a sealing ring is arranged on the inner side of the cover plate, and the sealing ring is used to seal the shell body and the cover plate.

[0014] In a possible implementation, the bus bar is used to be electrically connected with the first electrode of the power supply, and the connector further comprises a combining bus bar, a second branch bus bar and a second plug-in terminal; one end of the combining bus bar is located in the shell body, and the other end of the combining bus bar is located outside the shell body and is used to be electrically connected with the second electrode of the power supply; one end of the second branch bus bar is located in the shell body and is electrically connected with one end of the combining bus bar, and the other end of the second branch bus bar is located outside the shell body and is used to be electrically connected with the first load; one end of the second plug-in terminal is located in the shell body and is electrically connected with the other end of the combining bus bar, and the other end of the second plug-in terminal is used to be plugged into the second load and be electrically connected with the second load.

[0015] In a possible implementation, the first electrode is a positive electrode, and the second electrode is a negative electrode. When the power supply supplies power to the first load, current flows out of the positive electrode of the power supply, flows through the bus bar and the first branch bus bar, flows into the positive electrode of the first load, flows out of the negative electrode of the first load, flows through the second branch bus bar and the combining bus bar, and flows into the negative electrode of the power supply, thereby forming a loop to achieve that the power supply supplies power to the first load. When the power supply supplies power to the second load, current flows out of the positive electrode of the power supply, flows through the bus bar and the first plug-in terminal, flows into the positive electrode of the second load, flows out of the negative electrode of the second load, flows through the second plug-in terminal and the combining bus bar, and flows into the negative electrode of the power supply, thereby forming a loop to achieve that the power supply supplies power to the second load.

[0016] In a possible implementation, the first electrode can also be a negative electrode, and the second electrode is a positive electrode.

[0017] In a possible implementation, the second load is provided with the connection port, and the plug-in shell part, the first plug-in terminal and the second plug-in terminal are fixed with the connection port. In a possible implementation, the plug-in shell part, the first plug-in terminal and the second plug-in terminal constitute a male connection part, and the connection port on the second load is a female connection part, and the male connection part and the female connection part are fixedly connected in a matching mode. In a possible implementation, the plug-in shell part, the first plug-in terminal and the second plug-in terminal constitute a female connection part, and the connection port on the second load is a male connection part, and the male connection part and the female connection part are fixedly connected in a matching mode.

[0018] In a possible implementation, the connector further comprises an insulating member, the insulating member comprises a first receiving part and a second receiving part, the first receiving part is located in the shell body, the second receiving part is located in the plug-in shell part, one end of the busbar and one end of the first branch wire are located in the first receiving part and electrically connected in the first receiving part, the first plug-in terminal is located in the second receiving part, the second receiving part is located outside the first receiving part, and the first receiving part is provided with a connecting opening in communication with the second receiving part, and one end of the first plug-in terminal is electrically connected with one end of the busbar through the connecting opening.

[0019] In a possible implementation, the first receiving part is provided with a receiving space in a half-enclosing mode, and is used for accommodating part of the busbar and the first branch wire, so as to insulate part of the busbar and the first branch wire from the shell body on the side close to the plug-in shell part in the second direction.

[0020] In a possible implementation, the insulating member further comprises the third receiving part, the third receiving part is used for accommodating part of the combined wire and the second branch wire, so as to insulate part of the combined wire and the second branch wire from the shell body on the side close to the plug-in shell part, and the third receiving part is also provided with a connecting opening in communication with the second receiving part, and one end of the second plug-in terminal is electrically connected with one end of the combined wire through the connecting opening. The third receiving part is arranged in a third direction away from the first receiving part, so as to insulate the combined wire from the busbar and insulate the second branch wire from the first branch wire, and avoid the electrical interference between the combined wire and the busbar and between the second branch wire and the first branch wire.

[0021] In a possible implementation, the insulating piece includes two connection ports for accommodating the first plug-in terminal and the second plug-in terminal respectively, and the two connection ports are arranged at intervals so that the second plug-in terminal is arranged at an insulating interval from the first plug-in terminal to avoid electrical interference between the second plug-in terminal and the first plug-in terminal. In a possible implementation, the sum of the lengths of the second accommodating portion and the connection port in the second direction is less than the length of the first plug-in terminal in the second direction, and the sum of the lengths of the second accommodating portion and the connection port in the second direction is less than the length of the second plug-in terminal in the second direction. After the first plug-in terminal and the second plug-in terminal pass through the connection port, the first plug-in terminal and the second plug-in terminal are exposed for connection with the second load.

[0022] The second accommodating portion and the connection port are arranged to insulate and separate the first plug-in terminal and the second plug-in terminal from the plug-in shell portion, to fix the first plug-in terminal and the second plug-in terminal, to prevent the first plug-in terminal and the second plug-in terminal from shaking and affecting the connection of the first plug-in terminal with the bus and the second load and the connection of the second plug-in terminal with the bus and the second load, and to prevent water vapor, dust, and the like from entering the inside of the shell body through the plug-in shell portion, so as to isolate the internal space of the shell body from the external environment and prevent water vapor, dust, and the like from entering the inside of the shell body through the plug-in shell portion to cause damage to internal devices.

[0023] The first accommodating portion, the third accommodating portion, and the second accommodating portion are fixedly connected, and in a possible implementation, the first accommodating portion, the third accommodating portion, and the second accommodating portion are integrated.

[0024] In a possible implementation, the insulating piece includes a first insulating plate, a second insulating plate, and a third insulating plate located on the same side of the first insulating plate, the second insulating plate and the third insulating plate are arranged oppositely, the first insulating plate, the second insulating plate, and the third insulating plate constitute a first accommodating portion, one end of the bus is located in the first accommodating portion, and the connection port is arranged on the first insulating plate and penetrates through the first insulating plate.

[0025] In a possible implementation, the insulating piece further comprises a fourth insulating plate, the fourth insulating plate is located on the same side of the first insulating plate as the second insulating plate and the third insulating plate, and the fourth insulating plate is located on the side of the third insulating plate away from the second insulating plate in the third direction, and the third insulating plate, the fourth insulating plate and the first insulating plate constitute the third containing portion.

[0026] The second containing portion is located on the side of the first insulating plate away from the second insulating plate in the second direction, and the first insulating plate separates the inside of the shell body from the inside of the plug-in shell portion, on the one hand, preventing water vapor, dust and the like from entering the inside of the shell body through the plug-in shell portion to cause damage to internal devices, and on the other hand, preventing components on the connection port from being mistakenly touched to the bus bar and the first branch line in the inside of the shell body when the first plug-in terminal and the second plug-in terminal are plugged into the connection port, thereby causing damage to the connector.

[0027] One end of the bus bar and one end of the first branch line are located on the side of the first insulating plate away from the plug-in shell portion in the second direction, and the one end of the bus bar and the one end of the first branch line are limited into the first containing portion; one end of the combined line and one end of the second branch line are located on the side of the first insulating plate away from the plug-in shell portion in the second direction, and the one end of the combined line and the one end of the second branch line are limited into the second containing portion; the first plug-in terminal and the second plug-in terminal extend through the first insulating plate and towards the side of the plug-in shell portion, and the first plug-in terminal and the second plug-in terminal are respectively limited into the two connection ports, which not only enables the insulating piece to have better insulation effect, but also regulates the arrangement of internal components of the shell.

[0028] In a possible implementation, the connector further comprises a first connecting sheet, the first connecting sheet is located in the first containing portion, one end of the bus bar is fixed and electrically connected to the surface of the first connecting sheet, one end of the first branch line is fixed and electrically connected to the surface of the first connecting sheet, the first connecting sheet is provided with a first connecting hole penetrating through the first connecting sheet, and one end of the first plug-in terminal is located in the first connecting hole and fixed to the first connecting sheet. Through the provision of the first connecting sheet, the first connecting sheet connects one end of the bus bar, the first branch line and the first plug-in terminal, increases the connection contact area of the first branch line, the first plug-in terminal and the bus bar, and makes the electrical connection more reliable.

[0029] In a possible implementation, one end of the busbar is welded to a surface of the first connecting sheet. In a possible implementation, the first connecting sheet is a flat sheet. In a possible implementation, one end of the first plug-in terminal passes through the first connecting hole and is fixed on the first connecting sheet by a screw.

[0030] In a possible implementation, the connector further comprises a first connecting sheet located in the first accommodating portion, one end of the first branch wire is fixed and electrically connected to a surface of the first connecting sheet, the first connecting sheet is fixedly connected to the first connecting sheet, one end of the busbar is directly fixed and electrically connected to a surface of the first connecting sheet, one end of the first branch wire is indirectly connected to the first connecting sheet through the first connecting sheet, thereby realizing the electrical connection between the first branch wire and the busbar, the first connecting sheet is provided with a second connecting hole penetrating through the first connecting sheet, and one end of the first plug-in terminal passes through the first connecting hole, the second connecting hole, and the first connecting sheet and the first connecting sheet are fixed. By additionally providing the first connecting sheet, the contact area of the first connecting sheet and the first connecting sheet is larger when they are connected, so that the electrical connection between the busbar and the first branch wire is more reliable.

[0031] In a possible implementation, the connector further comprises a third connecting sheet and a fourth connecting sheet connected to each other, the third connecting sheet and the fourth connecting sheet are located in the third accommodating portion, one end of the combined wire is fixed and electrically connected to a surface of the third connecting sheet, one end of the second branch wire is fixed and electrically connected to a surface of the fourth connecting sheet, and the combined wire is connected to the fourth connecting sheet through the third connecting sheet to realize the electrical connection between the combined wire and the second branch wire. The third connecting sheet is provided with a third connecting hole penetrating through the third connecting sheet, the fourth connecting sheet is provided with a fourth connecting hole penetrating through the fourth connecting sheet, and one end of the second plug-in terminal passes through the third connecting hole, the fourth connecting hole, and is fixed and electrically connected to the third connecting sheet and the fourth connecting sheet. By providing the third connecting sheet and the fourth connecting sheet, the contact area of the third connecting sheet and the fourth connecting sheet is larger when they are connected, and the third connecting sheet and the fourth connecting sheet increase the connection contact area of the second branch wire, the second plug-in terminal, and the combined wire, so that the electrical connection is more reliable.

[0032] In a possible implementation, the shell comprises a shell body and a busbar outgoing line portion and a first branch wire outgoing line portion located outside the shell body, the busbar outgoing line portion, the first branch wire outgoing line portion, and the interior of the shell body are in communication, the other end of the busbar extends out of the shell from the interior of the busbar outgoing line portion, and the other end of the first branch wire extends out of the shell from the interior of the first branch wire outgoing line portion.

[0033] The bus outgoing line part and the first branch outgoing line part are located on two opposite sides of the shell body along a first direction, or the bus outgoing line part and the first branch outgoing line part are located on two adjacent sides of the shell body.

[0034] The bus outgoing line part and the first branch outgoing line part are arranged, the bus is limited in the bus outgoing line part, the first branch is limited in the first branch outgoing line part, the wiring of the bus and the first branch is regularized, and the connection between the bus, the first branch and the shell body is more stable.

[0035] In a possible implementation, the shell further includes a combined line outgoing line part and a second branch outgoing line part located outside the shell body, the combined line outgoing line part and the second branch outgoing line part are in communication with the inside of the shell body, one end of the combined line extends out of the shell from the inside of the combined line outgoing line part, the other end of the second branch extends out of the shell from the inside of the second branch outgoing line part; the combined line outgoing line part and the second branch outgoing line part are located on two opposite sides of the shell body along a first direction, or the combined line outgoing line part and the second branch outgoing line part are located on two adjacent sides of the shell body. The combined line outgoing line part and the second branch outgoing line part are arranged, the combined line is limited in the combined line outgoing line part, the second branch is limited in the second branch outgoing line part, the wiring of the combined line and the second branch is regularized, and the connection between the combined line, the second branch and the shell body is more stable.

[0036] In a possible implementation, the bus outgoing line part, the combined line outgoing line part, the first branch outgoing line part and the second branch outgoing line part are located on two sides of the shell along a first direction, the bus outgoing line part and the combined line outgoing line part are arranged side by side along a third direction, and the first branch outgoing line part and the second branch outgoing line part are arranged side by side along a third direction, so as to regularize the wiring inside the shell.

[0037] In a possible implementation, the connector further includes a bus shielding part, the bus includes a bus core and a bus shielding layer wrapped outside the bus core, one end of the bus core is electrically connected with the first plug-in terminal, the bus shielding part is located between the bus shielding layer and the bus outgoing line part, and is electrically connected with the bus shielding layer and the bus outgoing line part.

[0038] The busbar shielding layer is electrically connected to the busbar outgoing section through electrical connection with the busbar shielding member, and the busbar shielding member can reduce the influence of the busbar core on other devices during power transmission. In a possible implementation, the busbar outgoing section and the busbar shielding member are both cylindrical, and the busbar shielding member is sleeved on the outer circumferential side of the busbar, and the busbar outgoing section is sleeved on the outer circumferential side of the busbar shielding member. This arrangement facilitates stable connection of the busbar shielding member with the shell and the busbar shielding layer, thereby ensuring the shielding effect of the busbar shielding member on the busbar.

[0039] In a possible implementation, the connector further includes a first branch line shielding member, the first branch line including a first branch line core and a first branch line shielding layer wrapped outside the first branch line core, the first branch line core being electrically connected to one end of the busbar, the first branch line shielding member being located between the first branch line shielding layer and the first branch line outgoing section and being electrically connected to the first branch line shielding layer and the first branch line outgoing section. The first branch line shielding member can reduce the influence of the first branch line core on other devices during power transmission.

[0040] In a possible implementation, the connector further includes a combined line shielding member, the combined line including a combined line core and a combined line shielding layer wrapped outside the combined line core, the combined line core being electrically connected to one end of the second plug-in terminal, the combined line shielding member being located between the combined line shielding layer and the combined line outgoing section and being electrically connected to the combined line shielding layer and the combined line outgoing section. The combined line shielding member can reduce the influence of the combined line core on other devices during power transmission.

[0041] In a possible implementation, the connector further includes a second branch line shielding member, the second branch line including a second branch line core and a second branch line shielding layer wrapped outside the second branch line core, the second branch line core being electrically connected to one end of the combined line, the second branch line shielding member being located between the second branch line shielding layer and the second branch line outgoing section and being electrically connected to the second branch line shielding layer and the second branch line outgoing section. The second branch line shielding member can reduce the influence of the second branch line core on other devices during power transmission.

[0042] In a possible implementation, the connector further comprises a busbar sealing ring, a first branch sealing ring, a combined sealing ring and a second branch sealing ring, which are respectively sleeved on the busbar, the first branch, the combined line and the second branch, for sealing the busbar and the busbar outlet, the first branch and the first branch outlet, the combined line and the combined line outlet, and the second branch and the second branch outlet. The sealing ring is arranged to isolate the internal space of the shell from the external environment, preventing water vapor, dust and the like from entering the shell and causing damage to the internal devices.

[0043] In a possible implementation, the connector further comprises a busbar outlet cover, a first branch outlet cover, a combined line outlet cover and a second branch outlet cover, which are respectively used for fixing the busbar, the first branch, the combined line and the second branch.

[0044] In a possible implementation, the connector further comprises a busbar sealing ring, a first branch sealing ring, a combined sealing ring and a second branch sealing ring, which are respectively sleeved on the busbar, the first branch, the combined line and the second branch, for sealing the busbar and the busbar outlet, the first branch and the first branch outlet, the combined line and the combined line outlet, and the second branch and the second branch outlet. The sealing ring is arranged to isolate the internal space of the shell from the external environment, preventing water vapor, dust and the like from entering the shell and causing damage to the internal devices.

[0045] In a possible implementation, the power supply system further comprises a third load, the power supply is a battery pack, and the second load is a power supply distribution unit, which is electrically connected to the third load and is used to transmit the voltage of the battery pack to the third load. In a possible implementation, the power supply system further comprises a plurality of loads, and the power supply distribution unit supplies power to the plurality of loads.

[0046] In a possible implementation, the power of the first load is greater than the power of the third load.

[0047] In a possible implementation, the connector further comprises a busbar sealing ring, a first branch sealing ring, a combined sealing ring and a second branch sealing ring, which are respectively sleeved on the busbar, the first branch, the combined line and the second branch, for sealing the busbar and the busbar outlet, the first branch and the first branch outlet, the combined line and the combined line outlet, and the second branch and the second branch outlet. The sealing ring is arranged to isolate the internal space of the shell from the external environment, preventing water vapor, dust and the like from entering the shell and causing damage to the internal devices.

[0048] In the application, through the arrangement of the connector, when the second load is the power distribution unit, the connector divides the circuit into two paths, one of which directly supplies power to the first load with high power through the first branch without passing through the power distribution unit, and the other supplies power to the third load with small power through the first plug-in terminal and the power distribution unit. The power distribution unit only needs to be provided with a circuit board inside, and the third load with small power is supplied through the metal layer wiring on the circuit board. The power distribution unit does not need to be provided with a copper bar inside. The arrangement of the connector optimizes the wiring layout inside the power distribution unit, reduces the size of the power distribution unit, and reduces the cost. The power supply supplies power to the first load and the power distribution unit through the connector, reducing the number of external connecting components of the power distribution unit. In the application, only a small current needs to be passed in the power distribution unit, and when the connector is connected to the power distribution unit, the connector can be a small current connector. The reduced specification of the connector can also save costs. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments of the application will be described below.

[0050] Figure 1a A schematic diagram of a power supply system provided by an embodiment of the application;

[0051] Figure 1b A schematic diagram of a power supply system provided by the prior art;

[0052] Figure 2 A schematic diagram of a vehicle structure provided by an embodiment of the application;

[0053] Figure 3 A schematic diagram of the connection between the connector and the second load provided by an embodiment of the application;

[0054] Figure 4 A perspective view of the connector provided by an embodiment of the application;

[0055] Figure 5 A perspective view of the connector provided by an embodiment of the application;

[0056] Figure 6 An exploded view of the connector provided by an embodiment of the application;

[0057] Figure 7 An exploded view of the connector provided by an embodiment of the application;

[0058] Figure 8 A sectional view of the connector provided by an embodiment of the application;

[0059] Figure 9 A Figure 8A local enlarged view of the middle P portion;

[0060] Figure 10 A perspective view of an insulating piece according to an embodiment of the present application;

[0061] Figure 11 A perspective view of an insulating piece according to an embodiment of the present application. DETAILED DESCRIPTION

[0062] 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, but not all of them.

[0063] In this document, the terms "first", "second", etc. are used only for descriptive purposes, 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" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0064] In addition, in this document, the orientation terms such as "upper", "lower", etc. are defined with respect to the orientation of the structure shown in the drawing, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the structure.

[0065] For the convenience of understanding, the English abbreviations and related technical terms involved in the embodiments of the present application will be explained and described below.

[0066] MCU: Motor Control Unit, motor control unit.

[0067] DCDC: DC is the abbreviation of Direct Current, and DCDC represents a device for converting a DC power supply of a certain voltage level into a DC power supply of another voltage level. DCDC is divided into two types of step-up power supply and step-down power supply according to the voltage level conversion relationship, for example, the DCDC converter connected to the vehicle-mounted DC power supply is a device for converting high-voltage DC into low-voltage DC.

[0068] The application provides a connector, which comprises a shell, a busbar, a first branch and a first plug-in terminal. One end of the busbar is located in the shell, and the other end of the busbar is located outside the shell and is used for electrically connecting with a power supply. One end of the first branch is located in the shell and is electrically connected with the one end of the busbar, and the other end of the first branch is located outside the shell and is used for electrically connecting with a first load. One end of the first plug-in terminal is located in the shell and is electrically connected with the one end of the busbar, and the other end of the first plug-in terminal is used for being plugged into a second load and being electrically connected with the second load. In the application, the connector is arranged, so that the number of connecting components on the second load can be reduced, the size of the second load can be reduced, and cost can be saved.

[0069] Referring to Figure 1a , Figure 1a A schematic diagram of a power supply system 1 provided by an embodiment of the application is shown in FIG. 1. The power supply system 1 comprises the connector of the application. Specifically, in the embodiment, the power supply system 1 comprises a power supply 14, a first load 11, a second load 12 and the connector 10. One end of the connector 10 is electrically connected with the power supply 14, the other end of the connector 10 is electrically connected with the first load 11, and the connector 10 is plugged into the second load 12 and is electrically connected with the second load 12. The power supply 14 supplies power to the first load 11 and the second load 12 through the connector 10. In an embodiment, the power supply system 1 further comprises more loads, and the power supply 14 supplies power to the loads through the connector 10. In an embodiment, the power supply system 1 comprises a plurality of connectors 10.

[0070] In a possible implementation, the power supply system 1 further comprises a third load 13, the power supply 14 is a battery pack, the second load 12 is a power supply distribution unit, the power supply distribution unit is electrically connected with the third load 13, and is used for transmitting the voltage of the battery pack to the third load 13. In an embodiment, the power supply system 1 further comprises a plurality of loads, and the power supply distribution unit supplies power to the loads.

[0071] In a possible implementation, the power of the first load 11 is greater than the power of the third load 13. In an embodiment, the power supply current of the power supply 14 supplied to the first load 11 through the connector 10 is greater than the power supply current of the power supply 14 supplied to the second load 12 through the connector 10. In an embodiment, the power supply current of the power supply 14 supplied to the first load 11 through the connector 10 is greater than 150 A. In an embodiment, the power supply current of the power supply 14 supplied to the first load 11 through the connector 10 is greater than 250 A. In an embodiment, the power supply current of the power supply 14 supplied to the second load 12 through the connector 10 is less than 80 A. In an embodiment, the power supply current of the power supply 14 supplied to the second load 12 through the connector 10 can be determined according to the type of the second load 12 and the types and numbers of other loads connected with the second load 12, which is not limited herein.

[0072] Referring toFigure 2 , Figure 2 This is a schematic diagram of the structure of a vehicle 2 provided in an embodiment of this application. The power supply system 1 of this application can be applied to the vehicle 2. The vehicle 2 includes a vehicle body 21 and a power supply system 1, which provides electrical energy to various electronic components in the vehicle 2. The vehicle 2 refers to a wheeled vehicle driven or towed by a power device, used for transporting people on roads, transporting goods, or performing specialized engineering operations. The vehicle 2 includes three-wheeled or four-wheeled vehicles, including cars, SUVs, buses, trucks, etc. The vehicle 2 also includes various specialized vehicles with specific functions, such as emergency rescue vehicles, water trucks, sewage suction trucks, cement mixer trucks, crane trucks, and medical vehicles. The vehicle 2 can also be a robot capable of movement.

[0073] In other embodiments, the power supply system 1 of this application can also be applied to other electronic devices to supply power to the internal components of the electronic devices, and is not limited to application on the vehicle 2.

[0074] In this embodiment, the power supply system 1 is an on-board power supply system, and the power source 14 is a battery pack. The battery pack is used to provide power to the first load 11 and the second load 12.

[0075] In one embodiment, the battery pack is equipped with a Battery Management System (BMS), which is closely integrated with the battery pack. The BMS uses sensors to monitor the voltage, current, and temperature of the battery pack in real time. It also performs leakage detection, thermal management, battery equalization management, alarm reminders, calculates the remaining capacity (SOC) and discharge power, reports the battery degradation level (SOH) and remaining capacity (SOC) status, and uses algorithms to control the maximum output power to obtain the maximum driving range based on the battery voltage, current, and temperature. It also uses algorithms to control the charger to charge at the optimal current. It communicates in real time with the vehicle master controller, motor controller, energy control system, vehicle display system, etc. through a bus interface.

[0076] In this embodiment, the second load 12 is a power distribution unit. The power distribution unit is also called a power distribution box, or PDU for short. The battery pack transmits high-voltage DC power to the power distribution unit, which then converts the high-voltage DC power output from the battery pack into the DC voltage or AC power required by the third load 13 and other vehicle loads to power them.

[0077] In an embodiment, the first load 11 is a power system, and the third load 13 is a compressor, a battery pack heating module, a seat heating module, a direct current low-voltage load, etc., wherein the power system includes a driving motor and an MCU, and the direct current low-voltage load can be a 12V direct current load, and the direct current low-voltage load includes an instrument panel, a control display screen, a vehicle lamp, a USB interface, etc.

[0078] In the embodiment, the compressor is a component in an in-vehicle air conditioning system and is used for refrigeration or heating. In an embodiment, the third load 13 further includes a water pump in the in-vehicle air conditioning system or a water pump in a vehicle-mounted cooling system. The vehicle-mounted cooling system is used for cooling heat generating components such as in-vehicle circuit boards and driving motors.

[0079] The battery pack heating module is used for heating the battery pack, and the battery pack is used for supplying power to the driving motor that drives the wheels to travel. In a low temperature condition, charging the battery pack will damage the battery pack, and the battery pack needs to be heated to a high temperature by the battery pack heating module before charging, so as to avoid damage to the battery pack due to charging in a low temperature condition.

[0080] The seat heating module is used for heating seats, including heating front seats, rear seats, or middle seats. In some embodiments, when the vehicle is a motor home, the seat heating module can also heat seats and lying positions in the motor home.

[0081] The power system is used for providing power to the vehicle, and the power system includes an MCU (Motor Control Unit) and a driving motor. The power supply system 1 can supply power to the MCU and the driving motor. The power system can be one or more than two. When there is only one power system, the power system can provide power to the entire vehicle, including front and rear wheels. When there are two power systems, one of the power systems is a front driving power system used for providing power to front wheels, and the other power system is a rear driving power system used for providing power to rear wheels. In an embodiment, the power system can be integrated or split.

[0082] In an embodiment, the power distribution unit is provided with an OBC (On-board charger) and a DCDC module. The OBC is a functional module used for charging a high-voltage battery pack from an alternating current power grid when the vehicle is parked. The DCDC module is a functional module used for converting high-voltage direct current into direct current voltage required by the third load when the third load is working. For example, the DCDC module can supply power to a 12V third load.

[0083] In a possible implementation, the outer side of the power distribution unit is provided with a connection port 16 (such as a USB interface, a DC interface, etc.). Figure 1aAs shown in the figure, the inner side of the power distribution unit is provided with a circuit board 17, the connecting port 16 is electrically connected with the circuit board 17, the connector 10 is inserted into the connecting port 16 to be electrically connected with the connecting port 16, and the circuit board 17 is electrically connected with the third load 13. The connector 10 is electrically connected with the circuit board 17, the circuit board 17 is provided with a metal layer trace, the metal layer trace transmits current to the third load 13, and the power supply 14 sequentially passes through the connector 10, the connecting port 16 and the circuit board 17 to supply power to the third load 13.

[0084] Please refer to Figure 1b , Figure 1b The power supply system provided by the prior art is shown in the figure. If the connector 10 is not arranged, the battery pack supplies power to the power distribution unit, and then the power distribution unit supplies power to the first load 11 and the third load 13. On the one hand, two connecting ports 16 and connectors connected therewith need to be arranged on the power distribution unit, the two connecting ports 16 are respectively used for being connected with the battery pack and the first load 11, and a plurality of interfaces need to be arranged on the power distribution unit, which not only increases the size of the power distribution unit, but also increases the failure probability of the interfaces. On the other hand, when the first load 11 is a power system, the power system is a high-power load. When the power distribution unit needs to transmit high-power current to supply power to the first load 11, in order to ensure the safety of current transmission, positive copper bars 15a and negative copper bars 15b need to be arranged inside the power distribution unit to transmit high-power current. The positive copper bars 15a and the negative copper bars 15b are respectively connected with the positive electrode and the negative electrode of the first load 11 to supply power from the power distribution unit to the first load 11. In order to ensure the insulation isolation of the positive copper bars 15a and the negative copper bars 15b, a certain size needs to be arranged between the positive copper bars 15a and the negative copper bars 15b, which increases the size of the power distribution unit and increases the cost of arranging the copper bars. On the other hand, the two connecting ports 16 of the power distribution unit connected with the battery pack and the first load 11 need to be high-current connectors, for example, the connecting port 16 is a 250A connecting port, which increases the cost.

[0085] In the embodiment, by arranging the connector 10, on the one hand, when the power supply system 1 needs to transmit high-power current, the battery pack directly supplies power to the first load 11 through the connector 10, does not need to pass through the power distribution unit, and the power distribution unit does not need to be arranged with copper bars. The power distribution unit only needs to be arranged with the circuit board 17, and the third load 13 is supplied with power through the metal layer trace on the circuit board 17. The metal layer trace has good isolation and small size, which reduces the size of the power distribution unit and reduces the cost.

[0086] On the other hand, the power distribution unit supplies power to the power distribution unit and the first load 11 through the connector 10, and the power distribution unit only needs to be arranged with one connecting port 16 and one connector 10 (as shown in the figure).Figure 1a In this way, one connection port 16 and one connector 10 simultaneously connect the power supply 14 and the first load 11, reducing the number of connection ports 16 and connectors on the power distribution unit, and also reducing the structural components on the power distribution unit, which is beneficial to the overall vehicle layout. In another aspect, the battery pack directly supplies power to the first load 11 through the cable in the connector 10, for example Figure 1a the busbar 210 cable in the power distribution unit, which is relatively soft, making the wiring method more flexible. In addition, the connector 10 only needs a small current connection port 16 when connected to the power distribution unit, for example, the connection port 16 when the connector 10 is connected to the power distribution unit can be an 80A connection port, which reduces the cost.

[0087] The connector 10 of the present application will be described in detail below.

[0088] Please refer to Figures 3 to 8 , Figure 3 the connection diagram of the connector 10 provided by an embodiment of the present application and the second load 12; Figure 4 and Figure 5 the perspective view of the connector 10 provided by an embodiment of the present application, Figure 6 and Figure 7 the exploded view of the connector 10 provided by an embodiment of the present application, Figure 8 the cross-sectional view of the connector 10 provided by an embodiment of the present application.

[0089] An embodiment of the present application provides a connector 10, which includes a housing 100, a busbar 210, a first branch cable 310, and a first plug-in terminal 410 (as shown in Figure 5 , one end of the busbar 210 is located in the housing 100, and the other end of the busbar 210 is located outside the housing 100 and is used for electrical connection with the power supply 14 (as shown in Figure 1a , Figure 4 and Figure 8 ); one end of the first branch cable 310 is located in the housing 100 and is electrically connected with one end of the busbar 210 (as shown in Figure 8 , the other end of the first branch cable 310 is located outside the housing 100 and is used for electrical connection with the first load 11; one end of the first plug-in terminal 410 is located in the housing 100 and is electrically connected with one end of the busbar 210, and the other end of the first plug-in terminal 410 is used for plugging into the second load 12 and electrically connected with the second load 12 (as shown in Figure 3 and Figure 7 ).

[0090] The shell 100 is used to protect the busbar 210, the first branch 310 and the first plug-in terminal 410 inside the shell 100, and to isolate the internal components of the shell 100 from the external environment. In an embodiment, the shell 100 is a metal shell. In an embodiment, the shell 100 is fixed on the second load 12.

[0091] One end of the busbar 210 extends into the shell 100 and is electrically connected with the first branch 310 and the first plug-in terminal 410 (as shown in Figure 7 and Figure 8 ). The other end of the busbar 210 is electrically connected with the power supply 14 (as shown in Figure 1a ). The first branch 310 extends from inside the shell 100 to outside the shell 100, and the first branch 310 is electrically connected with the busbar 210 inside the shell 100, and the first plug-in terminal 410 is electrically connected with the busbar 210 inside the shell 100. In this embodiment, the first plug-in terminal 410 is entirely located inside the shell 100, and in other embodiments, the first plug-in terminal 410 can also extend from inside the shell 100 to outside the shell 100. In an embodiment, the first plug-in terminal 410 can also be electrically connected with the first branch 310.

[0092] In this embodiment, the extension direction of the part of the busbar 210 inside the shell 100 is the same as or substantially the same as the extension direction of the part of the first branch 310 (as shown in Figure 7 ), and the extension direction of the busbar 210 intersects with the extension direction of the first plug-in terminal 410.

[0093] In an embodiment, the extension direction of the part of the busbar 210 inside the shell 100 perpendicularly intersects with the extension direction of the first plug-in terminal 410, and the busbar 210, the first branch 310 and the first plug-in terminal 410 are in the shape of "T". This arrangement can reduce the overall volume of the connector 10 and the second load 12.

[0094] In an embodiment, the extension direction of the part of the busbar 210 inside the shell 100 intersects with the extension direction of the part of the first branch 310, and the extension direction of the busbar 210 is the same as or approximately the same as the extension direction of the first plug-in terminal 410. In other embodiments, the extension direction of the busbar 210, the extension direction of the first branch 310 and the extension direction of the first plug-in terminal 410 all intersect inside the shell 100, and the wiring mode between the busbar 210, the first branch 310 and the first plug-in terminal 410 can be arranged according to the layout needs.

[0095] Please continue to refer to Figure 1aIn this embodiment, the current on the power supply 14 is transmitted through the bus 210 to the first branch line 310 and the first plug-in terminal 410, and then supplies power to the first load 11 and the second load 12 respectively through the first branch line 310 and the first plug-in terminal 410. In this embodiment, both the bus 210 and the first branch line 310 are cables. Cables can carry a large current, and high-power current can be transmitted to the high-power first load 11 through the cables to ensure circuit safety; the first plug-in terminal 410 is elongated (e.g., ...). Figure 7 As shown, the material of the first plug-in terminal 410 includes, but is not limited to, conductive metals, alloys, and conductive polymers. In one embodiment, the material of the first plug-in terminal 410 is copper or a copper alloy. A small current can be transmitted to the second load 12 through the first plug-in terminal 410. When the second load 12 is a power distribution unit, power is supplied to the third load 13 and other low-power loads through the metal layer traces on the circuit board 17 in the power distribution unit.

[0096] In this application, by setting the connector 10, when the second load 12 is a power distribution unit, firstly, the connector 10 splits the circuit into two paths. One path of current directly supplies power to the high-power first load 11 through the first branch line 310, without needing to go through the power distribution unit to supply power to the first load 11. The other path of current supplies power to the third load 13 and other low-power loads through the first plug terminal 410 and the power distribution unit. The power distribution unit only needs to set up a circuit board 17 inside, and supplies power to the third load 13 and other low-power loads through the metal layer traces on the circuit board 17. The metal layer traces only need to carry a small current, so there is no need to set up copper busbars inside the power distribution unit, saving costs. At the same time, the metal layer traces have good isolation and small size. The setting of the connector 10 optimizes the wiring layout inside the power distribution unit, reduces the size of the power distribution unit, and reduces costs.

[0097] Secondly, the connector 10 is located outside the power distribution unit. The first branch line 310 for connecting the first load 11 and the bus line for connecting the power supply 14 are located outside the power distribution unit. The connector 10 does not occupy the internal space of the power distribution unit, thus reducing the size of the power distribution unit. When the power distribution unit is applied to the vehicle 2, the reduced size of the power distribution unit is beneficial to the overall vehicle layout.

[0098] Thirdly, the power supply 14 supplies power to the first load 11 and the power distribution unit simultaneously through the connector 10, which reduces the number of peripheral connection components of the power distribution unit, saves costs, and reduces the overall size of the power distribution unit and the connector 10, so that the power distribution unit and the connector 10 can be adapted to various small-sized scenarios.

[0099] In the fourth aspect, if the connector 10 is not arranged, when a large current in the power distribution unit is transmitted through a copper bar, a loop of the large current in the power distribution unit passes through the power distribution unit in a way that two connecting components enter and exit the power distribution unit to supply power to the first load 11, and the connecting components must be large-current connecting components, such as 150 A connecting components and 250 A connecting components. In the embodiment, only a small current needs to be transmitted in the power distribution unit, and when the connector 10 is connected to the power distribution unit, the connector 10 can be a small-current connector, for example, an 80 A connector. The reduced specification of the connector 10 can save costs.

[0100] It should be noted that the rated current of the connector 10 can be determined according to the types and quantities of the third loads 13 electrically connected to the power distribution unit, and is not limited to 80 A, but can also be 60 A, 40 A, and the like.

[0101] In an embodiment, the connector 10 further includes more branch lines, one end of the branch lines is electrically connected to the bus bar 210, and the other end of the branch lines is respectively connected to a plurality of loads to simultaneously supply power to the plurality of loads through the branch lines.

[0102] In a possible implementation, the shell 100 includes a shell body 110 and a plug housing portion 120 (as shown in Figure 4 、 Figure 6 and Figure 7 ), one end of the bus bar 210 is located in the shell body 110, the plug housing portion 120 is in communication with an internal space of the shell body 110, the first plug-in terminal 410 is located in an internal space of the plug housing portion 120, and the plug housing portion 120 is used to be fixed with the second load 12.

[0103] In the embodiment, one end of the first branch line 310 is located in the shell body 110, and the bus bar 210 and the first branch line 310 are respectively located on two sides of the plug housing portion 120 along a first direction X. The plug housing portion 120 includes a first opening 121 and a second opening 122 (as shown in Figure 5 and Figure 6 ) oppositely arranged along a second direction Y intersecting the first direction X, the first opening 121 and the second opening 122 penetrate the plug housing portion 120, the first opening 121 and the second opening 122 are in communication with the internal space of the shell body 110, and the first plug-in terminal 410 is electrically connected to the second load 12 through the second opening 122. In an embodiment, part of the first plug-in terminal 410 is located in the internal space of the shell body 110 and connected to the bus bar 210, and another part of the first plug-in terminal 410 extends to the internal space of the plug housing portion 120 through the first opening 121 and is electrically connected to the second load 12. In an embodiment, the first plug-in terminal 410 is connected to the bus bar 210 at the junction of the shell body 110 and the plug housing portion 120.

[0104] In an embodiment, the second load 12 is provided with a connection port 16 (as shown in Figure 3 and Figure 5 ), the plug-in housing part 120 and the first plug-in terminal 410 are fixedly connected with the connection port 16. In an embodiment, the plug-in housing part 120 and the first plug-in terminal 410 constitute a male connection part, and the connection port 16 on the second load 12 is a female connection part, and the male connection part and the female connection part are fixedly connected. In an embodiment, the plug-in housing part 120 and the first plug-in terminal 410 constitute a female connection part, and the connection port 16 on the second load 12 is a male connection part, and the male connection part and the female connection part are fixedly connected. In an embodiment, the shell body 110 is provided with a mounting hole 101 (as shown in Figure 3 , Figure 4 and Figure 5 ) on the side close to the plug-in housing part 120 along the second direction Y, and the shell body 100 is fixedly connected with the connection port 16 through the mounting hole 101 after the first plug-in terminal 410 is plugged into the connection port 16. The fixing mode includes but is not limited to bolts, screws, buckles, etc.

[0105] In an embodiment, the shell body 110 includes a cover plate 102 (as shown in Figure 4 , Figure 6 and Figure 7 ), which is located on the side of the shell body 110 away from the plug-in housing part 120 along the second direction Y. The cover plate 102 is detachably connected with the shell body 110, and the internal components of the shell body 100 are installed by detaching the cover plate 102. When the internal components of the shell body 100 are damaged, they can be repaired and replaced by detaching the cover plate 102. In an embodiment, the inner side of the cover plate 102 is provided with a sealing ring for sealing the shell body 110 and the cover plate 102.

[0106] Please continue to refer to Figure 4 and Figure 5 . In a possible implementation, the bus 210 is used to electrically connect with the first electrode of the power supply 14, and the connector 10 further includes a combined wire 220, a second branch wire 320, and a second plug-in terminal 420. One end of the combined wire 220 is located in the shell body 100, and the other end of the combined wire 220 is located outside the shell body 100 and is used to electrically connect with the second electrode of the power supply 14. One end of the second branch wire 320 is located in the shell body 100 and electrically connected with one end of the combined wire 220, and the other end of the second branch wire 320 is located outside the shell body 100 and is used to electrically connect with the first load 11. One end of the second plug-in terminal 420 is located in the shell body 100 and electrically connected with one end of the combined wire 220, and the other end of the second plug-in terminal 420 is used to be plugged into the second load 12 and electrically connected with the second load 12.

[0107] The other end of the combined line 220 is located outside the shell 100 and is electrically connected to the power supply 14. In an embodiment, the other end of the combined line 220 is electrically connected to the power supply 14 through a connecting member. The combined line 220 and the second branch line 320 are respectively located on two sides of the plug-in shell portion 120 along the first direction X. The second branch line 320 extends from the inside of the shell 100 to the outside of the shell 100, and the second branch line 320 is electrically connected to the combined line 220 inside the shell body 110. The second plug-in terminal 420 is located in the internal space of the plug-in shell portion 120, and the second plug-in terminal 420 is electrically connected to the combined line 220 inside the shell 100. In an embodiment, the second plug-in terminal 420 can also be electrically connected to the second branch line 320.

[0108] The combined line 220 and the bus bar 210 are arranged along a third direction Z (as shown in Figure 4 The third direction Z intersects with the first direction X and the second direction Y. The second branch line 320 and the first branch line 310 are arranged along the third direction Z, and the second plug-in terminal 420 and the first plug-in terminal 410 are arranged along the third direction Z.

[0109] In an embodiment, the first electrode is a positive electrode, and the second electrode is a negative electrode. When the power supply 14 supplies power to the first load 11, the current flows out of the positive electrode of the power supply 14, flows through the bus bar 210 and the first branch line 310, and then flows into the positive electrode of the first load 11. The current then flows out of the negative electrode of the first load 11, and then flows through the second branch line 320 and the combined line 220, and then flows into the negative electrode of the power supply 14, forming a loop to achieve the power supply 14 supplying power to the first load 11. When the power supply 14 supplies power to the second load 12, the current flows out of the positive electrode of the power supply 14, flows through the bus bar 210 and the first plug-in terminal 410, and then flows into the positive electrode of the second load 12. The current then flows out of the negative electrode of the second load 12, and then flows through the second plug-in terminal 420 and the combined line 220, and then flows into the negative electrode of the power supply 14, forming a loop to achieve the power supply 14 supplying power to the second load 12.

[0110] In an embodiment, the first electrode can also be a negative electrode, and the second electrode is a positive electrode. When the power supply 14 supplies power to the first load 11, the current flows out of the positive electrode of the power supply 14, flows through the combined line 220 and the second branch line 320, and then flows into the positive electrode of the first load 11. The current then flows out of the negative electrode of the first load 11, and then flows through the first branch line 310 and the bus bar 210, and then flows into the negative electrode of the power supply 14, forming a loop to achieve the power supply 14 supplying power to the first load 11. When the power supply 14 supplies power to the second load 12, the current flows out of the positive electrode of the power supply 14, flows through the combined line 220 and the second plug-in terminal 420, and then flows into the positive electrode of the second load 12. The current then flows out of the negative electrode of the second load 12, and then flows through the first plug-in terminal 410 and the bus bar 210, and then flows into the negative electrode of the power supply 14, forming a loop to achieve the power supply 14 supplying power to the second load 12.

[0111] In an embodiment, the second load 12 is provided with a connecting port 16, and the plug-in housing portion 120, the first plug-in terminal 410 and the second plug-in terminal 420 are fixedly connected with the connecting port 16. In an embodiment, the plug-in housing portion 120, the first plug-in terminal 410 and the second plug-in terminal 420 constitute a male connecting portion, and the connecting port 16 on the second load 12 constitutes a female connecting portion, and the male connecting portion and the female connecting portion are fixedly connected. In an embodiment, the plug-in housing portion 120, the first plug-in terminal 410 and the second plug-in terminal 420 constitute a female connecting portion, and the connecting port 16 on the second load 12 constitutes a male connecting portion, and the male connecting portion and the female connecting portion are fixedly connected.

[0112] Please refer to Figure 10 and Figure 11 , Figure 10 and Figure 11 are perspective views of the insulating member 500 provided in an embodiment of the present application. In a possible implementation, the connector 10 further comprises the insulating member 500, which comprises a first receiving portion 510 and a second receiving portion 520 (as shown in Figure 11 The first receiving portion 510 is located in the shell body 110, and the second receiving portion 520 is located in the plug-in housing portion 120. One end of the busbar 210 and one end of the first branch line 310 are located in the first receiving portion 510 and are electrically connected in the first receiving portion 510. The first plug-in terminal 410 is located in the second receiving portion 520. The second receiving portion 520 is located outside the first receiving portion 510, and the first receiving portion 510 is provided with a connecting port 540 in communication with the second receiving portion 520. One end of the first plug-in terminal 410 is electrically connected with one end of the busbar 210 through the connecting port 540.

[0113] The first receiving portion 510 is provided with a receiving space, and the receiving space on the first receiving portion 510 is in a semi-enclosing shape, for accommodating part of the busbar 210 and the first branch line 310, so as to insulate and isolate part of the busbar 210 and the first branch line 310 from the shell body 110 on the side close to the plug-in housing portion 120 along the second direction Y.

[0114] In an embodiment, the insulating member 500 further comprises a third receiving portion 530 (as shown in Figure 11The third accommodating portion 530 is used for accommodating the partial busbar 220 and the second branch line 320, so as to insulate and separate the partial busbar 220 and the second branch line 320 from the shell body 110 close to the side of the plug-in shell portion 120. The third accommodating portion 530 is also provided with a connecting port 540 in communication with the second accommodating portion 520, and one end of the second plug-in terminal 420 is electrically connected with one end of the busbar 220 through the connecting port 540. The third accommodating portion 530 is spaced apart from the first accommodating portion 510 along the third direction Z, so that the busbar 220 is insulated and spaced apart from the busbar 210, and the second branch line 320 is insulated and spaced apart from the first branch line 310, thereby avoiding the electrical interference between the busbar 220 and the busbar 210 and between the second branch line 320 and the first branch line 310.

[0115] The second accommodating portion 520 extends through the first opening 121 towards the second opening 122 along the second direction Y (as shown in FIG. 5). Figure 5 and Figure 11 As shown in FIG. 5, the connecting port 540 penetrates the second accommodating portion 520. In the embodiment, the insulating member 500 includes two connecting ports 540 for accommodating the first plug-in terminal 410 and the second plug-in terminal 420 respectively. The two connecting ports 540 are spaced apart, so that the second plug-in terminal 420 is insulated and spaced apart from the first plug-in terminal 410, thereby avoiding the electrical interference between the second plug-in terminal 420 and the first plug-in terminal 410. In the embodiment, the sum of the lengths of the second accommodating portion 520 and the connecting port 540 along the second direction Y is less than the length of the first plug-in terminal 410 along the second direction Y, and the sum of the lengths of the second accommodating portion 520 and the connecting port 540 along the second direction Y is less than the length of the second plug-in terminal 420 along the second direction Y. After the first plug-in terminal 410 and the second plug-in terminal 420 pass through the connecting port 540, the exposed portions of the first plug-in terminal 410 and the second plug-in terminal 420 are used for connecting with the second load 12.

[0116] The arrangement of the second accommodating portion 520 and the connecting port 540 can insulate and separate the first plug-in terminal 410 and the second plug-in terminal 420 from the plug-in shell portion 120. In addition, the first plug-in terminal 410 and the second plug-in terminal 420 can be fixed by the second accommodating portion 520 and the connecting port 540, so as to prevent the first plug-in terminal 410 and the second plug-in terminal 420 from shaking and affecting the connection of the first plug-in terminal 410 with the busbar 210 and the second load 12 and the connection of the second plug-in terminal 420 with the busbar 220 and the second load 12. In addition, if the second accommodating portion 520 and the connecting port 540 are not arranged, the water vapor, dust and the like in the external environment can easily enter the inside of the shell body 110 through the first opening 121. However, by arranging the second accommodating portion 520 and the connecting port 540, the first opening 121 is blocked, so that the internal space of the shell body 110 is isolated from the external environment, thereby preventing the water vapor, dust and the like from entering the inside of the shell body 110 and causing the damage of the internal devices.

[0117] The first accommodating portion 510, the third accommodating portion 530, and the second accommodating portion 520 are fixedly connected, and in an embodiment, the first accommodating portion 510, the third accommodating portion 530, and the second accommodating portion 520 are in an integrated structure.

[0118] In a possible implementation, the insulation piece 500 includes a first insulation plate 501, a second insulation plate 502, and a third insulation plate 503 located on the same side of the first insulation plate 501 (as shown in FIG. 5A). Figure 10 and Figure 11 The second insulation plate 502 and the third insulation plate 503 are oppositely arranged, and the first insulation plate 501, the second insulation plate 502, and the third insulation plate 503 constitute the first accommodating portion 510. One end of the busbar 210 is located in the first accommodating portion 510, and the connecting port 540 is arranged on the first insulation plate 501 and penetrates the first insulation plate 501.

[0119] In an embodiment, the insulation piece 500 further includes a fourth insulation plate 504, the fourth insulation plate 504 is located on the same side of the first insulation plate 501 as the second insulation plate 502 and the third insulation plate 503, and the fourth insulation plate 504 is located on the side of the third insulation plate 503 away from the second insulation plate 502 along the third direction Z. The third insulation plate 503, the fourth insulation plate 504, and the first insulation plate 501 constitute the third accommodating portion 530.

[0120] The second insulation plate 502, the third insulation plate 503, and the fourth insulation plate 504 are arranged along the third direction Z and extend along the first direction X, the third direction Z intersects the first direction X and the second direction Y, and the second insulation plate 502, the third insulation plate 503, and the fourth insulation plate 504 are located on the side of the first insulation plate 501 away from the plug-in shell portion 120 along the second direction Y. In this embodiment, the first direction X is the length direction of the connector 10, the second direction Y is the thickness direction of the connector 10, and the third direction Z is the width direction of the connector 10.

[0121] The second accommodating portion 520 is located on the side of the first insulation plate 501 away from the second insulation plate 502 along the second direction Y, and the first insulation plate 501 relatively separates the inside of the shell body 110 from the inside of the plug-in shell portion 120. On the one hand, it prevents water vapor, dust, and the like from entering the inside of the shell body 110 through the first opening 121 to cause damage to the internal devices. On the other hand, when the first plug-in terminal 410 and the second plug-in terminal 420 are plugged into the connecting port 16, it prevents the components on the connecting port 16 from being mistakenly touched to the busbar 210 and the first branch line 310 inside the shell body 110, thereby preventing damage to the connector 10.

[0122] One end of the busbar 210 and one end of the first branch line 310 are located on the side of the first insulating plate 501 away from the plug-in housing portion 120 in the second direction Y, and are limited into the first receiving portion 510; one end of the busbar 210 and one end of the first branch line 310 are located on the side of the first insulating plate 501 away from the plug-in housing portion 120 in the second direction Y, and are limited into the first receiving portion 510; the first plug-in terminal 410 and the second plug-in terminal 420 extend through the first insulating plate 501 and extend towards the side of the plug-in housing portion 120, and are respectively limited into the two connecting ports 540, so that the insulating piece 500 can not only have better insulation effect, but also regulate the arrangement of the internal components of the shell 100.

[0123] In a possible implementation, the connector 10 further comprises a first connecting piece 610 (as shown in Figure 6 and Figure 7 , the first connecting piece 610 is located in the first receiving portion 510, one end of the busbar 210 is fixed and electrically connected to the surface of the first connecting piece 610, and one end of the first branch line 310 is fixed and electrically connected to the surface of the first connecting piece 610, the first connecting piece 610 is provided with a first connecting hole 611 (as shown in Figure 6 ) penetrating the first connecting piece 610, and one end of the first plug-in terminal 410 is located in the first connecting hole 611 and is fixed to the first connecting piece 610. Through the arrangement of the first connecting piece 610, the first connecting piece 610 connects one end of the busbar 210, the first branch line 310 and the first plug-in terminal 410, increases the connection contact area of the first branch line 310, the first plug-in terminal 410 and the busbar 210, and makes the electrical connection more reliable.

[0124] In an embodiment, one end of the busbar 210 is welded to the surface of the first connecting piece 610. In an embodiment, the first connecting piece 610 is a flat sheet. In an embodiment, one end of the first plug-in terminal 410 penetrates the first connecting hole 611 and is fixed on the first connecting piece 610 by a screw.

[0125] In an embodiment, the connector 10 further comprises a second connecting piece 620, the second connecting piece 620 is located in the first receiving portion 510, one end of the first branch line 310 is fixed and electrically connected to the surface of the second connecting piece 620, the second connecting piece 620 is fixedly connected with the first connecting piece 610, one end of the busbar 210 is directly fixed and electrically connected to the surface of the first connecting piece 610, and one end of the first branch line 310 is indirectly connected with the first connecting piece 610 through the second connecting piece 620, thereby realizing the electrical connection of the first branch line 310 and the busbar 210, the second connecting piece 620 is provided with a second connecting hole 621 (as shown inFigure 7 As shown, one end of the first plug-in terminal 410 passes through the first connecting hole 611 and the second connecting hole 621 and is fixed to the first connecting piece 610 and the second connecting piece 620. By adding the second connecting piece 620, the contact area between the second connecting piece 620 and the first connecting piece 610 is larger, making the electrical connection between the busbar 210 and the first branch line 310 more reliable.

[0126] In one embodiment, the connector 10 further includes a third connecting piece 630 and a fourth connecting piece 640 connected to each other. Both the third connecting piece 630 and the fourth connecting piece 640 are located within the third receiving portion 530. One end of the connecting wire 220 is fixed to and electrically connected to the surface of the third connecting piece 630, and one end of the second connecting wire 320 is fixed to and electrically connected to the surface of the fourth connecting piece 640. The connecting wire 220 is connected to the fourth connecting piece 640 through the third connecting piece 630 to achieve electrical connection between the connecting wire 220 and the second connecting wire 320. The third connecting piece 630 is provided with a third connecting hole 631 (e.g., ...) penetrating the third connecting piece 630. Figure 6 As shown), the fourth connecting piece 640 is provided with a fourth connecting hole 641 penetrating through the fourth connecting piece 640 (as shown). Figure 7 As shown, one end of the second plug-in terminal 420 passes through the third connecting hole 631 and the fourth connecting hole 641, and is fixed and electrically connected to the third connecting piece 630 and the fourth connecting piece 640. The arrangement of the third connecting piece 630 and the fourth connecting piece 640 increases the contact area when they are connected, and also increases the contact area between the second branch line 320, the second plug-in terminal 420, and the connecting line 220, making the electrical connection more reliable.

[0127] In one possible implementation, the housing 100 includes a housing body 110 and a busbar outlet 111 and a first branch outlet 112 located outside the housing body 110 (e.g., Figure 6 and Figure 7 As shown, the busbar outlet 111 and the first branch outlet 112 are connected to the interior of the shell body 110. The other end of the busbar 210 extends from the interior of the busbar outlet 111 to the outside of the shell body 100, and the other end of the first branch 310 extends from the interior of the first branch outlet 112 to the outside of the shell body 100. The busbar outlet 111 and the first branch outlet 112 are located on opposite sides of the shell body 110 along the first direction X; or, the busbar outlet 111 and the first branch outlet 112 are located on adjacent sides of the shell body 110. The busbar outlet section 111 and the first branch outlet section 112 are provided to limit the busbar 210 to the busbar outlet section 111 and the first branch line 310 to the first branch outlet section 112, thereby organizing the wiring of the busbar 210 and the first branch line 310 and making the connection between the busbar 210, the first branch line 310 and the shell body 110 more stable.

[0128] In an embodiment, the shell 100 further comprises a busbar outlet portion 113 and a second branch outlet portion 114 (as shown in Figure 6 and Figure 7 ) located outside the shell body 110, the busbar outlet portion 113 and the second branch outlet portion 114 are in communication with the interior of the shell body 110, one end of the busbar 220 extends from the interior of the busbar outlet portion 113 to the outside of the shell 100, the other end of the second branch 320 extends from the interior of the second branch outlet portion 114 to the outside of the shell 100; the busbar outlet portion 113 and the second branch outlet portion 114 are located on opposite sides of the shell body 110 along the first direction X; or, the busbar outlet portion 113 and the second branch outlet portion 114 are located on adjacent sides of the shell body 110. The busbar outlet portion 113 and the second branch outlet portion 114 are provided to limit the busbar 220 to the busbar outlet portion 113 and limit the second branch 320 to the second branch outlet portion 114, to regularize the wiring of the busbar 220 and the second branch 320, and to make the connection of the busbar 220 and the second branch 320 to the shell body 110 more stable.

[0129] In the present embodiment, the busbar outlet portion 111, the busbar outlet portion 113, the first branch outlet portion 112 and the second branch outlet portion 114 are located on both sides of the shell 100 along the first direction X, the busbar outlet portion 111 and the busbar outlet portion 113 are arranged side by side along the third direction Z, and the first branch outlet portion 112 and the second branch outlet portion 114 are arranged side by side along the third direction Z, so as to regularize the wiring inside the shell 100.

[0130] In an embodiment, the busbar outlet portion 111, the first branch outlet portion 112, the busbar outlet portion 113 and the second branch outlet portion 114 can be arranged at any position on the shell 100 according to actual needs.

[0131] In a possible implementation, the connector 10 further comprises a busbar shielding member 710 (as shown in Figure 7 and Figure 9 ), the busbar 210 comprises a busbar core and a busbar shielding layer wrapped outside the busbar core, the busbar core is electrically connected to one end of the first plug-in terminal 410, the busbar shielding member 710 is located between the busbar shielding layer and the busbar outlet portion 111, and is electrically connected to the busbar shielding layer and the busbar outlet portion 111.

[0132] The busbar shielding layer is electrically connected to the busbar outlet portion 111 via an electrical connection to the busbar shielding component 710. The busbar shielding component 710 can reduce the impact of the busbar core on other devices during power transmission. In one embodiment, both the busbar outlet portion 111 and the busbar shielding component 710 are cylindrical. The busbar shielding component 710 is sleeved on the outer periphery of the busbar 210, and the busbar outlet portion 111 is sleeved on the outer periphery of the busbar shielding component 710. This arrangement facilitates a stable connection between the busbar shielding component 710 and the housing 100 and the busbar shielding layer, thereby ensuring the shielding effect of the busbar shielding component 710 on the busbar 210.

[0133] In one embodiment, the busbar shield 710 can also be connected to other parts of the housing 100 to achieve electrical connection between the busbar shield layer and the housing 100, and the busbar shield layer can be grounded through the grounding of the housing 100.

[0134] In one embodiment, connector 10 further includes a first branch shield 720 (e.g., Figure 7 and Figure 8 As shown, the first branch line 310 includes a first branch line core and a first branch line shielding layer covering the outside of the first branch line core. The first branch line core is electrically connected to one end of the bus 210. The first branch line shielding member 720 is located between the first branch line shielding layer and the first branch line output portion 112, and is electrically connected to both the first branch line shielding layer and the first branch line output portion 112. The provision of the first branch line shielding member 720 can reduce the impact of the first branch line core on other devices when transmitting power.

[0135] In one embodiment, connector 10 further includes a wire bonding shield 730 (e.g., Figure 7 As shown, the cable 220 includes a cable core and a cable shielding layer covering the cable core. The cable core is electrically connected to one end of the second connector 420. The cable shielding element 730 is located between the cable shielding layer and the cable exit portion 113, and is electrically connected to both the cable shielding layer and the cable exit portion 113. The cable shielding element 730 reduces the impact of the cable core's power transmission on other devices.

[0136] In one embodiment, connector 10 further includes a second branch shield 740 (e.g., Figure 7 As shown, the second branch line 320 includes a second branch line core and a second branch line shielding layer covering the outside of the second branch line core. The second branch line core is electrically connected to one end of the combiner line 220. The second branch line shielding member 740 is located between the second branch line shielding layer and the second branch line output portion 114, and is electrically connected to both the second branch line shielding layer and the second branch line output portion 114. The provision of the second branch line shielding member 740 can reduce the impact of the second branch line core on other devices when transmitting power.

[0137] In an embodiment, the first branch shielding 720, the joint shielding 730 and the second branch shielding 740 can also be connected with other parts of the shell 100 to realize the electrical connection of the first branch shielding layer with the shell 100, the electrical connection of the joint shielding layer with the shell 100, the electrical connection of the second branch shielding layer with the shell 100, and grounding through the shell 100 to realize the grounding of the first branch shielding layer, the joint shielding layer and the second branch shielding layer.

[0138] In the embodiment, the busbar 210, the first branch 310, the joint 220 and the second branch 320 are all cables, which include a core for transmitting power and a shielding layer located at the outer circumferential side of the core. The shielding layer is grounded to reduce the influence of the core on other devices during power transmission. In an embodiment, the cable further includes a first insulating layer and a second insulating layer, which are sequentially wrapped around the core, the first insulating layer being wrapped on the outside of the core to insulate and isolate the core from the shielding layer, and the second insulating layer being wrapped on the outside of the shielding layer to isolate the shielding layer from the outside world. In the embodiment, when the busbar 210, the first branch 310, the joint 220 and the second branch 320 are connected with other components, the first insulating layer, the shielding layer and the second insulating layer on the outside of the busbar 210, the first branch 310, the joint 220 and the second branch 320 are removed to facilitate the electrical connection of the core with the other components. In the embodiment, the part of the busbar 210, the first branch 310, the joint 220 or the second branch 320 connected with the shielding member only has the first insulating layer and the shielding layer wrapped thereon, and part of the second insulating layer is removed to expose the shielding layer, so that the shielding layer abuts against the shielding member.

[0139] In a possible implementation, the connector 10 further includes a busbar sealing ring 810 (as shown in Figure 7 and Figure 9 ), which is sleeved on the busbar 210 to seal the busbar 210 and the busbar outgoing line part 111. The busbar sealing ring 810 is arranged to isolate the internal space of the shell 100 from the external environment, preventing water vapor, dust and the like from entering the shell 100 through the busbar outgoing line part 111 to cause damage to the internal devices.

[0140] In an embodiment, the connector 10 further includes a first branch sealing ring 820 (as shown in Figure 7 and Figure 8 ), which is sleeved on the first branch 310 to seal the first branch 310 and the first branch outgoing line part 112. The first branch sealing ring 820 is arranged to isolate the internal space of the shell 100 from the external environment, preventing water vapor, dust and the like from entering the shell 100 through the first branch outgoing line part 112 to cause damage to the internal devices.

[0141] In a possible implementation, the connector 10 further comprises a busbar sealing ring 830 (as shown in Figure 7 , which is sleeved on the busbar 220 and used for sealing the busbar 220 and the busbar outgoing line portion 113. The busbar sealing ring 830 is arranged to isolate the internal space of the shell 100 from the external environment, so as to prevent water vapor, dust and the like from entering the shell 100 through the busbar outgoing line portion 113 and causing damage to the internal devices.

[0142] In an embodiment, the connector 10 further comprises a second branch line sealing ring 840 (as shown in Figure 7 , which is sleeved on the second branch line 320 and used for sealing the second branch line 320 and the second branch line outgoing line portion 114. The second branch line sealing ring 840 is arranged to isolate the internal space of the shell 100 from the external environment, so as to prevent water vapor, dust and the like from entering the shell 100 through the second branch line outgoing line portion 114 and causing damage to the internal devices.

[0143] In a possible implementation, the connector 10 further comprises a busbar outgoing line cover 910 (as shown in Figure 4 and Figure 7 , which is sleeved on the end of the busbar outgoing line portion 111 away from the shell body 110, and the end of the busbar 210 extends outward through the busbar outgoing line cover 910. The busbar outgoing line cover 910 is fixedly connected to the outer circumferential side of the busbar outgoing line portion 111, and is used for fixing the busbar 210 to avoid the busbar 210 from shaking and affecting the electrical connection of the busbar 210. In an embodiment, the busbar outgoing line portion 111 is provided with a buckle 1111 protruding outward (as shown in Figure 6 , and the busbar outgoing line cover 910 is provided with a clamping opening 911. When the busbar outgoing line cover 910 is sleeved on the busbar outgoing line portion 111, the buckle 1111 is clamped and fixed with the clamping opening 911, so as to improve the connection reliability of the busbar outgoing line cover 910 and the busbar outgoing line portion 111.

[0144] In an embodiment, the connector 10 further comprises a first branch line outgoing line cover 920 (as shown in Figure 4 and Figure 7The first branch wire outlet cover 920 is arranged at one end of the first branch wire outlet portion 112 away from the shell body 110, and one end of the first branch wire 310 extends outward through the first branch wire outlet cover 920. The first branch wire outlet cover 920 is fixedly connected to the outer circumferential side of the first branch wire outlet portion 112, and is used to fix the first branch wire 310 to avoid shaking of the first branch wire 310 and affecting the electrical connection of the first branch wire 310. In an embodiment, the first branch wire outlet portion 112 is also provided with a buckle protruding towards the outside, and the first branch wire outlet cover 920 is provided with a buckle hole. When the first branch wire outlet cover 920 is arranged on the first branch wire outlet portion 112, the buckle is fixedly buckled with the buckle hole to improve the connection reliability of the first branch wire outlet cover 920 and the first branch wire outlet portion 112.

[0145] In an embodiment, the connector 10 further comprises a combined wire outlet cover 930 (as shown in Figure 4 and Figure 7 ), and the combined wire outlet cover 930 is arranged at one end of the combined wire outlet portion 113 away from the shell body 110, and one end of the combined wire 220 extends outward through the combined wire outlet cover 930. The combined wire outlet cover 930 is fixedly connected to the outer circumferential side of the combined wire outlet portion 113, and is used to fix the combined wire 220 to avoid shaking of the combined wire 220 and affecting the electrical connection of the combined wire 220. In an embodiment, the combined wire outlet portion 113 is also provided with a buckle protruding towards the outside, and the combined wire outlet cover 930 is provided with a buckle hole. When the combined wire outlet cover 930 is arranged on the combined wire outlet portion 113, the buckle is fixedly buckled with the buckle hole to improve the connection reliability of the combined wire outlet cover 930 and the combined wire outlet portion 113.

[0146] In an embodiment, the connector 10 further comprises a second branch wire outlet cover 940 (as shown in Figure 4 and Figure 7 ), and the second branch wire outlet cover 940 is arranged at one end of the second branch wire outlet portion 114 away from the shell body 110, and one end of the second branch wire 320 extends outward through the second branch wire outlet cover 940. The second branch wire outlet cover 940 is fixedly connected to the outer circumferential side of the second branch wire outlet portion 114, and is used to fix the second branch wire 320 to avoid shaking of the second branch wire 320 and affecting the electrical connection of the second branch wire 320. In an embodiment, the second branch wire outlet portion 114 is also provided with a buckle protruding towards the outside, and the second branch wire outlet cover 940 is provided with a buckle hole. When the second branch wire outlet cover 940 is arranged on the combined second branch wire outlet portion 114, the buckle is fixedly buckled with the buckle hole to improve the connection reliability of the second branch wire outlet cover 940 and the second branch wire outlet portion 114.

[0147] The connector, the power supply system and the vehicle provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific embodiments and application range will be changed, and the above description of the present application should not be understood as a limitation.

Claims

1. A power distribution unit, characterized by, The power distribution unit is used for electrically connecting the battery pack through a connector, the power distribution unit is used for supplying power to the vehicle-mounted load of a vehicle, and the connector comprises: A shell comprising a shell body and a busbar outgoing line part, a first branch outgoing line part and a plug-in shell part located outside the shell body, the busbar outgoing line part, the first branch outgoing line part and the plug-in shell part are in communication with the inside of the shell body, and the busbar outgoing line part and the first branch outgoing line part are located on opposite sides of the shell body; or the busbar outgoing line part and the first branch outgoing line part are located on adjacent sides of the shell body, and the plug-in shell part is located on a different side of the shell body from any one of the busbar outgoing line part and the first branch outgoing line part; A busbar, one end of the busbar is located in the shell, and the other end of the busbar extends from the inside of the busbar outgoing line part to the outside of the shell and is used for electrical connection with the battery pack; A first branch, one end of the first branch is located in the shell and is electrically connected with one end of the busbar, and the other end of the first branch extends from the inside of the first branch outgoing line part to the outside of the shell and is used for electrical connection with the power system of the vehicle; A first plug-in terminal, one end of the first plug-in terminal is located in the shell and is electrically connected with one end of the busbar, and the other end of the first plug-in terminal is located in the inside of the plug-in shell part and is used for plugging on the connection port outside the power distribution unit to electrically connect with the internal devices of the power distribution unit.

2. The power distribution unit of claim 1, wherein, The plug-in shell part is used for fixing outside the power distribution unit.

3. The power distribution unit of claim 2, wherein, The connector further comprises an insulating piece comprising a first receiving part and a second receiving part, the first receiving part is located in the shell body, the second receiving part is located in the plug-in shell part, one end of the busbar and one end of the first branch are located in the first receiving part and are electrically connected in the first receiving part, the first plug-in terminal is located in the second receiving part, the second receiving part is located outside the first receiving part and the first receiving part is provided with a connecting port in communication with the second receiving part, and one end of the first plug-in terminal passes through the connecting port to electrically connect with one end of the busbar.

4. The power distribution unit of claim 3, wherein, The insulating piece comprises a first insulating plate and a second insulating plate and a third insulating plate located on the same side of the first insulating plate, the second insulating plate and the third insulating plate are oppositely arranged, the first insulating plate, the second insulating plate and the third insulating plate constitute a first receiving part, one end of the busbar is located in the first receiving part, and the connecting port is provided on the first insulating plate and penetrates through the first insulating plate.

5. The power distribution unit of claim 3, wherein, The connector further comprises a first connecting sheet located in the first receiving part, one end of the busbar is fixed and electrically connected with the surface of the first connecting sheet, one end of the first branch is fixed and electrically connected with the surface of the first connecting sheet, the first connecting sheet is provided with a first connecting hole penetrating through the first connecting sheet, and one end of the first plug-in terminal is located in the first connecting hole and is fixed with the first connecting sheet.

6. The power distribution unit of any of claims 1-5, wherein, The plug-in housing part is located on one side of the shell body along a second direction, the busbar outgoing line part and the first branch outgoing line part are arranged opposite to each other along a first direction, and the second direction intersects the first direction.

7. The power distribution unit of claim 6, wherein, The connector further comprises a busbar shielding part, the busbar comprises a busbar core and a busbar shielding layer wrapped outside the busbar core, one end of the busbar core is electrically connected to the first plug-in terminal, the busbar shielding part is located between the busbar shielding layer and the busbar outgoing line part and is electrically connected to the busbar shielding layer and the busbar outgoing line part.

8. The power distribution unit of any of claims 1-5, 7, wherein, The busbar is used for electrically connecting to a first electrode of the power supply, and the connector further comprises a combined line, a second branch and a second plug-in terminal. One end of the combined line is located in the shell body, and the other end of the combined line is located outside the shell body and is used for electrically connecting to a second electrode of the power supply. One end of the second branch is located in the shell body and is electrically connected to one end of the combined line, and the other end of the second branch is located outside the shell body and is used for electrically connecting to a power system. One end of the second plug-in terminal is located in the shell body and is electrically connected to the other end of the combined line, and the other end of the second plug-in terminal is used for being plugged into a connection port outside a power supply distribution unit to electrically connect to internal devices of the power supply distribution unit.

9. The power distribution unit of claim 6, wherein, The busbar is used for electrically connecting to a first electrode of the power supply, and the connector further comprises a combined line, a second branch and a second plug-in terminal. One end of the combined line is located in the shell body, and the other end of the combined line is located outside the shell body and is used for electrically connecting to a second electrode of the power supply. One end of the second branch is located in the shell body and is electrically connected to one end of the combined line, and the other end of the second branch is located outside the shell body and is used for electrically connecting to a power system. One end of the second plug-in terminal is located in the shell body and is electrically connected to the other end of the combined line, and the other end of the second plug-in terminal is used for being plugged into a connection port outside a power supply distribution unit to electrically connect to internal devices of the power supply distribution unit.

10. A power supply system characterized by comprising: The power supply system comprises a battery pack, a power system and a power supply distribution unit as claimed in any one of claims 1-9, the other end of the busbar is electrically connected to the battery pack, the other end of the first branch is electrically connected to the power system, and the other end of the first plug-in terminal is plugged into a connection port outside the power supply distribution unit to electrically connect to internal devices of the power supply distribution unit.

11. A vehicle characterized by comprising: The power supply system comprises a battery pack, a power system and a power supply distribution unit as claimed in any one of claims 1-9, the other end of the busbar is electrically connected to the battery pack, the other end of the first branch is electrically connected to the power system, and the other end of the first plug-in terminal is plugged into a connection port outside the power supply distribution unit to electrically connect to internal devices of the power supply distribution unit. The power supply system comprises a battery pack, a power system and a power supply distribution unit as claimed in any one of claims 1-9, the other end of the busbar is electrically connected to the battery pack, the other end of the first branch is electrically connected to the power system, and the other end of the first plug-in terminal is plugged into a connection port outside the power supply distribution unit to electrically connect to internal devices of the power supply distribution unit.

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