Integrated high-voltage power distribution device and vehicle

Abstract

The utility model relates to an integrated high-voltage power distribution device and a vehicle, the integrated high-voltage power distribution device comprises a plate body and a power distribution assembly, the power distribution assembly comprises a main loop and a control loop, the main loop comprises a positive loop, a negative loop and a plurality of relays, and each of the plurality of relays comprises a pair of control contacts; the control loop comprises an auxiliary interface and control interfaces arranged in one-to-one correspondence with the relays, one control contact in each pair of control contacts is electrically connected to the same auxiliary interface, and the other control contact in each pair of control contacts is electrically connected to the corresponding control interface. According to the embodiment of the invention, integrated design can be formed, the number of electronic wires between the whole high-voltage power distribution device and the external control circuit is reduced, the assembly process between the whole high-voltage power distribution device and the external control circuit is simplified, the overall occupied space is small, and maintenance is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle engineering, and particularly to an integrated high-voltage power distribution device and a vehicle. Background Art

[0002] In new energy vehicles, a high-voltage power distribution device is an essential component between the battery pack and the external high-voltage equipment of the whole vehicle. In the high-voltage power distribution device of traditional new energy vehicles, there are many electronic wires corresponding to each electronic component, the assembly is complex, and the occupied space is large.

[0003] Therefore, there is an urgent need for an integrated high-voltage power distribution device and a vehicle with fewer electronic wires, simple assembly, and less occupied space. Summary of the Utility Model

[0004] The embodiments of the present application provide an integrated high-voltage power distribution device and a vehicle, which can reduce the number of electronic wires between the whole high-voltage power distribution device and the external control circuit, simplify the assembly process between the whole high-voltage power distribution device and the external control circuit, occupy less space as a whole, and are convenient for maintenance.

[0005] In a first aspect, the embodiments of the present application provide an integrated high-voltage power distribution device, which includes a board body and a power distribution component integrated on the board body. The power distribution component includes: a main circuit, including a positive circuit, a negative circuit, and a plurality of relays. The plurality of relays are all installed on the positive circuit, the plurality of relays are all installed on the negative circuit, or the plurality of relays include two parts of relays respectively installed on the positive circuit and the negative circuit. Each relay included in the plurality of relays includes a pair of control contacts; a control circuit, including an auxiliary interface and control interfaces arranged in one-to-one correspondence with the plurality of relays. One control contact in each pair of control contacts is electrically connected to the same auxiliary interface, and the other control contact in each pair of control contacts is electrically connected to the corresponding control interface. The auxiliary interface and the control interface are also respectively used to connect to an external control circuit.

[0006] In some embodiments, the board body has a first surface and a second surface oppositely arranged along a first direction, and the plurality of relays are installed on the first surface.

[0007] In some embodiments, the control circuit includes a connector integrated on the first surface, and the connector includes an auxiliary interface and a control interface arranged at intervals.

[0008] In some embodiments, at least part of the control contacts are electrically connected to the corresponding auxiliary interface or the corresponding control interface through corresponding electronic wires; and / or, at least part of the control contacts are electrically connected to the corresponding auxiliary interface or the corresponding control interface through a conductive layer in the board body.

[0009] In some embodiments, the plurality of relays include a main circuit relay, and the positive electrode circuit includes: a main positive terminal block for electrically connecting to the positive electrode of the battery pack; more than one positive output circuit, one end of the positive output circuit is electrically connected with a corresponding positive output terminal block, and the other ends of the positive output circuits are all electrically connected to the same main positive terminal block. At least part of the positive output circuits are connected in series with the main circuit relay and / or a fuse, and the fuse is detachably installed on the second surface.

[0010] In some embodiments, the positive electrode circuit further includes a pre-charge circuit, and the pre-charge circuit includes a first pre-charge branch electrically connected to the main positive terminal block, and / or a second pre-charge branch connected in parallel to the main circuit relay.

[0011] In some embodiments, the plurality of relays include a first branch relay. The first pre-charge branch is connected in series with a first branch relay, a first pre-charge resistor and a diode. One end of the first pre-charge branch is electrically connected to the main positive terminal block, and the other end of the first pre-charge branch is electrically connected with a pre-charge terminal block. The anode of the diode is closer to the pre-charge terminal block than the cathode of the diode. The plurality of relays include a second branch relay, and the second pre-charge branch is connected in series with a second branch relay and a second pre-charge resistor.

[0012] In some embodiments, the positive electrode circuit includes a first copper bar integrated on the first surface. The first copper bar is electrically connected to the main positive terminal block, one end of the first pre-charge branch and at least one positive output circuit. The negative electrode circuit includes a second copper bar integrated on the first surface. The second copper bar is electrically connected with a negative input terminal block and a main negative terminal block for electrically connecting to the negative electrode of the battery pack. The power distribution component further includes a positive fast charging circuit and a negative fast charging circuit. The positive fast charging circuit includes a third copper bar, and the negative fast charging circuit includes a fourth copper bar.

[0013] In some embodiments, a copper bar fixing seat is fixedly connected to the first surface. On the side of the copper bar fixing seat away from the first surface, there are spaced positioning posts and threaded holes. The circumferential side of the positioning post is provided with a ventilation groove extending along the first direction. The copper bar fixing seat is also provided with holes spaced from the ventilation groove, and the holes extend along the second direction. The first direction intersects with the second direction; and / or, heat sinks are attached to the first surface and / or the second surface.

[0014] In a second aspect, an embodiment of the present application provides a vehicle, which includes a battery pack and the above-mentioned integrated high-voltage power distribution device, and the integrated high-voltage power distribution device is electrically connected to the battery pack.

[0015] The integrated high-voltage power distribution device and vehicle according to the embodiments of the present application. The integrated high-voltage power distribution device includes a board body and a power distribution component integrated on the board body. The power distribution component includes a main circuit and a control circuit. The main circuit includes a positive circuit, a negative circuit, and a plurality of relays. Each relay included in the plurality of relays includes a pair of control contacts. The control circuit includes an auxiliary interface and control interfaces provided in one-to-one correspondence with the plurality of relays. One control contact in each pair of control contacts is electrically connected to the same auxiliary interface, and the other control contact in each pair of control contacts is electrically connected to the corresponding control interface. The auxiliary interface and the control interface are also respectively used to connect to an external control circuit. In the prior art, at least two electronic wires need to be provided for each pair of control contacts corresponding to each relay to connect to the corresponding external control circuit. In the present application, after one control contact in each pair of control contacts is electrically connected to the same auxiliary interface and then electrically connected to the external control circuit through the auxiliary interface, an integrated design can be formed, reducing the number of electronic wires between the overall integrated high-voltage power distribution device and the external control circuit, simplifying the assembly process between the overall integrated high-voltage power distribution device and the external control circuit, occupying less overall space, and being convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0017] Figure 1 Partial circuit structure schematic diagram of the integrated high-voltage power distribution device provided in some embodiments of the present application;

[0018] Figure 2 Another partial circuit structure schematic diagram of the integrated high-voltage power distribution device provided in some embodiments of the present application;

[0019] Figure 3 Structure schematic diagram of the integrated high-voltage power distribution device provided in some embodiments of the present application;

[0020] Figure 4 For Figure 3 Enlarged schematic diagram of the area at A in

[0021] Figure 5 Structure schematic diagram of the first surface provided in some embodiments of the present application;

[0022] Figure 6 Structure schematic diagram of the second surface provided in some embodiments of the present application;

[0023] Figure 7 Structure schematic diagram of the relay provided in some embodiments of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0025] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including", or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article, or device comprising the elements.

[0026] Currently, in new energy vehicles, a high-voltage power distribution device is an essential component between the battery pack and the external high-voltage equipment of the vehicle.

[0027] It has been found through research that in the high-voltage power distribution device of traditional new energy vehicles, there are many electronic wires corresponding to each electronic component, the assembly is complex, and the occupied space is large. Specifically, the relay control contacts between the battery pack and the external high-voltage equipment of the vehicle are directly connected to the external control circuit through corresponding wiring harnesses. That is to say, at least two electronic wires need to be set for each relay to connect to the corresponding external control circuit, resulting in problems of many electronic wires, complex assembly, and large occupied space.

[0028] To solve the problems of the prior art, the embodiments of the present application provide an integrated high-voltage power distribution device and a vehicle. The following will be introduced in detail in conjunction with the accompanying drawings.

[0029] Figure 1 Partial circuit structure schematic diagram of the integrated high-voltage power distribution device provided by some embodiments of the present application; Figure 3 Structure schematic diagram of the integrated high-voltage power distribution device provided by some embodiments of the present application; Figure 7 Structure schematic diagram of the relay provided by some embodiments of the present application.

[0030] Please refer to Figure 1 , Figure 3 and Figure 7 As shown, the embodiment of the present application provides an integrated high-voltage power distribution device, which includes a board body 1 and a power distribution component integrated on the board body 1. The power distribution component includes a main circuit and a control circuit. Among them, the main circuit includes a positive circuit 21, a negative circuit 22 and a plurality of relays. The plurality of relays are all installed on the positive circuit 21, the plurality of relays are all installed on the negative circuit 22, or the plurality of relays include two parts of relays respectively installed on the positive circuit 21 and the negative circuit 22. Each relay included in the plurality of relays includes a pair of control contacts 18. It can be understood that each relay included in the plurality of relays further includes a pair of main contacts 17. In the present application, a certain relay is installed in a circuit means that the two main contacts 17 of the relay are connected in series in the corresponding circuit; among them, the control contacts 18 are used to receive control signals to control the engagement state of the corresponding main contacts 17, and thus can control the on / off state of the circuit where the corresponding relay is located.

[0031] The control circuit includes an auxiliary interface J21 and control interfaces provided in one-to-one correspondence with a plurality of relays. One control contact 18 in each pair of control contacts 18 is electrically connected to the same auxiliary interface J21, and the other control contact 18 in each pair of control contacts 18 is electrically connected to the corresponding control interface. The auxiliary interface J21 and the control interface are also respectively used to connect to an external control circuit to receive control signals transmitted by the external control circuit to the auxiliary interface J21 and the control interface. It can be understood that interfaces such as the auxiliary interface J21 and the control interface can be in the form of pins, slots, or other forms that can be connected to conductive parts.

[0032] The control principle of the plurality of relays is that one control contact 18 in each pair of control contacts 18 is electrically connected to the same auxiliary interface J21 and then electrically connected to the external control circuit through the auxiliary interface J21; the other control contact 18 in each pair of control contacts 18 is electrically connected to the corresponding control interface and then electrically connected to the external control circuit through the corresponding control interface. The external control circuit transmits a consistent reference signal to one control contact 18 in each pair of control contacts 18 through the auxiliary interface J21, and the external control circuit transmits corresponding command signals to the other control contact 18 in each pair of control contacts 18 through different control interfaces. That is to say, each pair of control contacts 18 can receive these two signals, namely the reference signal and the corresponding command signal. That is, each pair of control contacts 18 can receive a separate control command, so as to be able to control the engagement state of the corresponding two main contacts 17 and realize the control of the on / off state of the corresponding circuit.

[0033] After each control contact 18 in each pair of control contacts 18 is electrically connected to the same auxiliary interface J21 and then electrically connected to an external control circuit through the auxiliary interface J21, an integrated design can be formed, reducing the number of electronic wires between the overall high-voltage power distribution device and the external control circuit, simplifying the assembly process between the overall high-voltage power distribution device and the external control circuit, occupying less overall space, and facilitating maintenance.

[0034] As Figure 1 , in some embodiments, multiple relays are all installed in the positive electrode circuit 21, and thus the structure of the negative electrode circuit 22 can be simplified, facilitating the layout of the negative electrode circuit 22.

[0035] Figure 5 Schematic diagram of the structure of the first surface S1 provided by some embodiments of the present application; Figure 6 Schematic diagram of the structure of the second surface S2 provided by some embodiments of the present application.

[0036] As Figure 3 , Figure 5 and Figure 6 shown, in some embodiments, the plate body 1 has a first surface S1 and a second surface S2 oppositely arranged along the first direction Z, and multiple relays are installed on the first surface S1. Specifically, in this embodiment, multiple relays together form a relay assembly K, which is labeled in Figure 3 . Since the relay is a relatively large-volume electronic component, installing multiple relays on the same surface can relatively reduce the overall thickness of the integrated high-voltage power distribution device along the first direction Z. It can be understood that in some other embodiments, installing multiple relays on the second surface S2 can also achieve the above effects.

[0037] In some embodiments, the two main contacts 17 and the two control contacts 18 of each relay are respectively welded to the pads of the plate body 1 and electrically connected to other electronic components through the conductive layer inside the plate body 1, so that the connection strength between the relay and the plate body 1 is relatively high, and the number of electronic wires can be further reduced, occupying less overall space and facilitating maintenance.

[0038] As Figure 3 shown, in some embodiments, the control circuit includes a connector J1 integrated on the first surface S1. The connector J1 includes an auxiliary interface J21 and a control interface arranged at intervals. The auxiliary interface J21 and the control interface are both located in the area where the connector J1 is located, with higher integration and more convenient installation and maintenance.

[0039] In some embodiments, at least part of the control contacts 18 are electrically connected to the corresponding auxiliary interface J21 or the corresponding control interface through corresponding electronic wires. When a certain electronic wire is damaged, the corresponding electronic wire can be replaced, and the maintenance cost is relatively low.

[0040] In some embodiments, at least part of the control contacts 18 are electrically connected to the corresponding auxiliary interface J21 or the corresponding control interface through a conductive layer in the board body 1, which has a higher integration level.

[0041] In some embodiments, the board body 1 is provided with through holes or other auxiliary devices to facilitate the arrangement of electronic wires.

[0042] Figure 2 It is a schematic diagram of another part of the circuit structure of the integrated high-voltage power distribution device provided in some embodiments of the present application.

[0043] As Figure 2 shown, specifically, in this embodiment, the connector J1 further includes an auxiliary terminal J11 and a control terminal. Among them, the auxiliary terminal J11 is electrically connected to the auxiliary interface J21 inside the connector J1, and the control terminal is electrically connected to the control interface one-to-one inside the connector J1. The control contacts 18 are connected to the corresponding auxiliary terminal J11 or the corresponding control terminal through corresponding electronic wires or wire layers, so as to facilitate the connection of the auxiliary interface J21 and the control interface to an external control circuit respectively.

[0044] As Figure 1 shown, in some embodiments, the multiple relays include a main circuit relay. The positive electrode circuit 21 includes a main positive terminal block X1 and more than one positive output circuit 211. The main positive terminal block X1 is used for electrically connecting to the positive electrode of the battery pack; one end of the positive output circuit 211 is electrically connected with a corresponding positive output terminal block, and the other ends of the positive output circuits 211 are all electrically connected to the same main positive terminal block X1. At least part of the positive output circuits 211 are connected in series with a main circuit relay and / or a fuse, and the fuse is detachably installed on the second surface S2. Specifically, in the present application, each fuse together constitutes a fuse assembly F, and the fuse assembly F is marked in Figure 6 ; in addition, the main positive terminal block X1, the positive output terminal block, and the main negative terminal block X10, the negative input terminal block X11, the first terminal block X12 to the fourth terminal block X15 in the following text together constitute a terminal block assembly X, in Figure 5Some of the terminal blocks in the terminal block assembly X are labeled. Among them, the positive output terminal block is used for electrically connecting to the corresponding load to supply power to the corresponding load; the main circuit relay is used to control the on / off of the corresponding positive output circuit 211 to control the power supply state of the positive output circuit 211 to the corresponding load; the fuse is used to protect the corresponding positive output circuit 211 and the corresponding load to prevent damage to the corresponding positive output circuit 211 and the corresponding load due to overload; when the fuse is blown and the corresponding circuit is repaired, the detachable installation method of the fuse facilitates the replacement of the fuse. Specifically, in this embodiment, both ends of the fuse are detachably connected to the plate body 1 through corresponding bolts; the fuse has a relatively large length. During the installation process of the fuse, the length direction of the fuse needs to be adjusted to be perpendicular to the first direction Z to relatively reduce the overall thickness of the integrated high-voltage power distribution device along the first direction Z. In this embodiment, since multiple relays are all installed on the first surface S1, after the fuses are all installed on the second surface S2, the size of the plate body 1 along the direction perpendicular to the first direction Z can be relatively reduced, further improving the integration degree of the integrated high-voltage power distribution device.

[0045] As Figure 1 shown, in some embodiments, the positive electrode circuit 21 further includes a pre-charge circuit. The pre-charge circuit includes a first pre-charge branch 212 electrically connected to the main positive terminal block X1, and / or a second pre-charge branch 213 connected in parallel with the main circuit relay. The first pre-charge branch 212 and the second pre-charge branch 213 are used to ensure that the capacitance of the corresponding load can be safely and effectively charged when the corresponding circuit is started.

[0046] In some embodiments, the multiple relays include a first branch relay K1. The first pre-charge branch 212 is connected in series with a first branch relay K1, a first pre-charge resistor R1, and a diode D. One end of the first pre-charge branch 212 is electrically connected to the main positive terminal block X1, and the other end of the first pre-charge branch is electrically connected to a pre-charge terminal block X2. The anode of the diode D is closer to the pre-charge terminal block X2 than the cathode of the diode D. Through its one-way conduction characteristic, the diode D allows the capacitance of the corresponding load to be gradually charged, and when the capacitance voltage approaches the power supply voltage, the diode D blocks the reverse current flow, thereby protecting the circuit components from high-voltage impact.

[0047] In some embodiments, the multiple relays include a second branch relay K5. The second pre-charge branch 213 is connected in series with a second branch relay K5 and a second pre-charge resistor R2. A corresponding inverter can be installed as needed, and in the state where the main positive terminal block X1 is electrically connected to the positive electrode of the battery pack, the corresponding main circuit relay can be disconnected and combined with the second branch relay K5 so that the second pre-charge branch 213 can charge the capacitance in the corresponding inverter.

[0048] As Figure 1As shown, in some embodiments, the positive output circuit 211 includes seven positive output circuits from the first positive output circuit 211 to the seventh positive output circuit 211. The positive output terminal block includes seven terminal blocks from the fifth terminal block to the eleventh terminal block. The main circuit relay includes four main circuit relays from the first main circuit relay to the fourth main circuit relay. The fuse assembly F includes five fuses from the first fuse to the fifth fuse. The control terminals include six control terminals from the first control terminal to the sixth control terminal. The control interfaces include six control interfaces from the first control interface to the sixth control interface.

[0049] As Figure 1 As shown, in some embodiments, the fifth terminal block X4 is provided on the first positive output circuit 211; the first main circuit relay K2 and the sixth terminal block X3 are provided on the second positive output circuit 211; the first fuse F1 and the seventh terminal block X5 are provided on the third positive output circuit 211; the second fuse F2 and the eighth terminal block X6 are provided on the fourth positive output circuit 211; the ninth terminal block X7, and the third fuse F3 and the second main circuit relay K3 connected in series are provided on the fifth positive output circuit 211; the tenth terminal block X8, and the fourth fuse F4 and the third main circuit relay K4 connected in series are provided on the sixth positive output circuit 211; the eleventh terminal block X9, and the fifth fuse F5 and the fourth main circuit relay K6 connected in series are provided on the seventh positive output circuit 211. The second pre-charge branch 213 is connected in parallel across both ends of the fourth main circuit relay K6.

[0050] As Figure 1 As shown, in some embodiments, one control contact 18 of the first branch relay K1 is electrically connected to the first control interface J22 through the first control terminal J12; one control contact 18 of the first main circuit relay K2 is electrically connected to the second control interface J23 through the second control terminal J13; one control contact 18 of the second main circuit relay K3 is electrically connected to the third control interface J24 through the third control terminal J14; one control contact 18 of the third main circuit relay K4 is electrically connected to the fourth control interface J25 through the fourth control terminal J15; one control contact 18 of the fourth main circuit relay K6 is electrically connected to the sixth control interface J27 through the sixth control terminal J17; one control contact 18 of the second branch relay K5 is electrically connected to the fifth control interface J26 through the fifth control terminal J16.

[0051] As Figure 1As shown, in some embodiments, the sixth terminal block X3 can be electrically connected to the first electric heating load of the vehicle; the fifth terminal block X4 can be electrically connected to the first inverter of the vehicle. During the process of connecting the first inverter to the circuit system, the first pre-charge branch 212 can be connected first to ensure that the capacitor in the first inverter can be charged safely and effectively; the seventh terminal block X5 can be electrically connected to the DC / DC converter of the vehicle; the eighth terminal block X6 can be electrically connected to the slow charging port of the vehicle; the ninth terminal block X7 can be electrically connected to the air conditioner of the vehicle; the tenth terminal block X8 can be electrically connected to the second electric heating load of the vehicle; the eleventh terminal block X9 can be electrically connected to the second inverter of the vehicle. During the process of connecting the second inverter to the circuit system, the second pre-charge branch 213 can be connected first to ensure that the capacitor in the second inverter can be charged safely and effectively.

[0052] In some embodiments, the positive electrode circuit 21 includes a first copper bar 11 integrated on the first surface S1. The first copper bar 11 is electrically connected to the main positive terminal block X1, one end of the first pre-charge branch 212, and at least one positive output circuit 211. Since the main positive terminal block X1 is used to be electrically connected to the positive electrode of the battery pack, some conductors near the main positive terminal block X1 in the positive electrode circuit 21 need to conduct large currents. By setting the first copper bar 11 at the corresponding position, during the process of conducting large currents, it has the characteristics of low resistance, low heat generation, and fast heat dissipation.

[0053] In some embodiments, the negative electrode circuit 22 includes a second copper bar 12 integrated on the first surface S1. The second copper bar 12 is electrically connected to the negative input terminal block X11 and the main negative terminal block X10 used to be electrically connected to the negative electrode of the battery pack. Among them, the negative input terminal block X11 is used to be electrically connected to the corresponding load. Since the main negative terminal block X10 is used to be electrically connected to the negative electrode of the battery pack, the negative input terminal block X11 and the main negative terminal block X10 in the negative electrode circuit 22 need to conduct large currents. By setting the second copper bar 12 at the corresponding position, during the process of conducting large currents, it has the characteristics of low resistance, low heat generation, and fast heat dissipation.

[0054] In some embodiments, the power distribution component further includes a positive fast charging circuit 23 and a negative fast charging circuit 24. The positive fast charging circuit includes a third copper bar 13, and the negative fast charging circuit 24 includes a fourth copper bar 14. Among them, the third copper bar 13 is provided with a first terminal block X12 for electrically connecting to the positive fast charging interface of the battery pack and a second terminal block X13 for electrically connecting to an external fast charging circuit. The fourth copper bar 14 is provided with a third terminal block X14 for electrically connecting to the negative fast charging interface of the battery pack and a fourth terminal block X15 for electrically connecting to an external fast charging circuit. During the fast charging process of the battery pack, both the positive fast charging circuit 23 and the negative fast charging circuit 24 need to conduct large currents. By setting the third copper bar 13 and the fourth copper bar 14, during the process of conducting large currents, they have the characteristics of low resistance, low heat generation, and fast heat dissipation.

[0055] Figure 4 For Figure 3 The enlarged schematic diagram of the area at A in

[0056] As Figure 4 As shown, in some embodiments, a copper bar fixing seat 15 is fixedly connected to the first surface S1. On the side of the copper bar fixing seat 15 away from the first surface S1, there are spaced positioning posts 151 and threaded holes. An air vent groove 152 extending along the first direction Z is provided on the circumferential side of the positioning post 151. The copper bar fixing seat 15 is further provided with holes 153 spaced from the air vent groove 152. The holes 153 extend along the second direction. The first direction Z intersects the second direction. Among them, the positioning post 151 is used to position corresponding electronic components such as the first copper bar 11, the second copper bar 12, the third copper bar 13, or the fourth copper bar 14. Specifically, the electronic component to be positioned is provided with a positioning hole adapted to the positioning post 151, and the positioning post 151 is inserted into the positioning block to achieve the positioning of the corresponding electronic component; the threaded hole locks the electronic component to be positioned by means of bolt connection; the air vent groove 152 and the holes 153 enable the air at the corresponding position to flow, so as to enhance the heat dissipation effect of the copper bar fixing seat 15. In addition, the air vent groove 152 and the holes 153 relatively increase the surface area of the copper bar fixing seat 15, further improving the heat dissipation effect of the copper bar fixing seat 15.

[0057] In some embodiments, heat sinks 16 are attached to the first surface S1 and / or the second surface S2. There is one or more heat sinks 16, which can enhance the heat dissipation efficiency at the corresponding position.

[0058] The embodiment of the present application also provides a vehicle, including the integrated high-voltage power distribution device in the above embodiment, and the integrated high-voltage power distribution device is electrically connected to the battery pack. Since the vehicle includes the integrated high-voltage power distribution device in the above embodiment, it has at least all the beneficial effects brought by the above embodiment, which will not be elaborated here one by one.

[0059] As described above, this is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.

Claims

1. An integrated high-voltage power distribution device, characterized in that: It includes a board body and a power distribution component integrated in the board body, and the power distribution component includes: A main circuit, comprising a positive circuit, a negative circuit and a plurality of relays, wherein the plurality of relays are all installed in the positive circuit, the plurality of relays are all installed in the negative circuit, or the plurality of relays include two parts of relays respectively installed in the positive circuit and the negative circuit, and each relay included in the plurality of relays includes a pair of control contacts; A control circuit includes an auxiliary interface and control interfaces arranged one by one with the multiple relays, one of the control contacts in each pair of the control contacts is electrically connected to the same auxiliary interface, and the other control contact in each pair of the control contacts is electrically connected to the corresponding control interface, and the auxiliary interface and the control interface are also used to connect to an external control circuit respectively.

2. The integrated high-voltage power distribution device according to claim 1, characterized in that: The board body has a first surface and a second surface which are arranged opposite to each other along a first direction, and the plurality of relays are mounted on the first surface.

3. The integrated high-voltage power distribution device according to claim 2, characterized in that: The control loop includes a connector integrated with the first surface, and the connector includes the auxiliary interface and the control interface which are spaced apart.

4. The integrated high-voltage power distribution device according to claim 3, characterized in that: At least part of the control contacts are electrically connected to the corresponding auxiliary interface or the corresponding control interface through corresponding electronic wires; And / or, at least part of the control contacts are electrically connected to the corresponding auxiliary interface or the corresponding control interface through the conductive layer in the board body.

5. The integrated high-voltage power distribution device according to claim 2, characterized in that: The plurality of relays include a main relay, and the positive circuit includes: A main positive terminal block for electrical connection to the positive terminal of the battery pack; More than one positive output circuit, one end of the positive output circuit is electrically connected to the corresponding positive output terminal seat, the other end of the positive output circuit is electrically connected to the same main positive terminal seat, at least part of the positive output circuit is connected in series with a main relay and / or a fuse, and the fuse is detachably mounted on the second surface.

6. The integrated high-voltage power distribution device according to claim 5, characterized in that: The positive electrode loop also includes a pre-charging circuit, which includes a first pre-charging branch electrically connected to the main positive terminal seat and / or a second pre-charging branch connected in parallel to the main circuit relay.

7. The integrated high-voltage power distribution device according to claim 6, characterized in that: The plurality of relays include a first branch relay, the first pre-charging branch is connected in series with the first branch relay, a first pre-charging resistor and a diode, one end of the first pre-charging branch is electrically connected to the main positive terminal seat, the other end of the first pre-charging branch is electrically connected to the pre-charging terminal seat, and the anode of the diode is closer to the pre-charging terminal seat than the cathode of the diode; The plurality of relays include a second branch relay, and the second pre-charging branch is connected in series with the second branch relay and a second pre-charging resistor.

8. The integrated high-voltage power distribution device according to claim 6, characterized in that: The positive electrode circuit includes a first copper bar integrated on the first surface, the first copper bar is electrically connected to the main positive terminal seat, one end of the first pre-charge branch and at least one of the positive output circuits; The negative electrode circuit includes a second copper busbar integrated on the first surface, the second copper busbar being electrically connected to a negative input terminal seat and a main negative terminal seat for being electrically connected to the negative electrode of the battery pack; The power distribution assembly also includes a positive fast charging circuit and a negative fast charging circuit, the positive fast charging circuit includes a third copper busbar, and the negative fast charging circuit includes a fourth copper busbar.

9. The integrated high-voltage power distribution device according to claim 6, characterized in that: A copper bar fixing seat is fixedly connected to the first surface, and a positioning column and a threaded hole are provided on a side of the copper bar fixing seat away from the first surface, and a ventilation groove extending along the first direction is provided on the peripheral side of the positioning column. The copper bar fixing seat is also provided with a hole spaced apart from the ventilation groove, and the hole extends along the second direction, and the first direction intersects with the second direction; And / or, a heat sink is attached to the first surface and / or the second surface.

10. A vehicle, characterized in that: It comprises a battery pack and the integrated high-voltage power distribution device according to any one of claims 1 to 9, wherein the integrated high-voltage power distribution device is electrically connected to the battery pack.

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