High-voltage power distribution unit and vehicle

Abstract

The utility model provides a high-voltage power distribution unit and a vehicle, the high-voltage power distribution unit comprises an electrical assembly and a box body, and the electrical assembly is used for being electrically connected with a battery pack and external electrical equipment respectively; the box body comprises a side wall and a bottom wall, the side wall and the bottom wall form a mounting cavity and a first opening communicated with the mounting cavity, and at least part of the electrical component is mounted in the mounting cavity; a second opening communicated with the mounting cavity is formed in the side wall; and a third opening communicated with the mounting cavity is formed in the bottom wall. According to the utility model, through the first opening, the second opening and the third opening, the maintenance of the electrical components close to the bottom and the side part is simpler, and the operation difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a high-voltage power distribution unit and a vehicle. Background Technology

[0002] The high-voltage power distribution unit (PDU) is responsible for rationally distributing the power output from the vehicle battery or generator to various systems and equipment, ensuring that they receive a stable power supply.

[0003] In related technologies, high-voltage power distribution units often have only one mounting port. During installation, the electrical components of the high-voltage power distribution unit are installed into the enclosure through this port. When maintaining the high-voltage power distribution unit, the mounting port needs to be opened to inspect the internal electrical components. However, since the electrical components located at the bottom and sides are far from the mounting port, inspecting these components is cumbersome and difficult. Utility Model Content

[0004] The embodiments of this utility model provide a high-voltage power distribution unit and a vehicle, which can improve the technical problem that the maintenance of electrical components located at the bottom and sides is cumbersome and difficult to operate.

[0005] In a first aspect, embodiments of the present invention provide a high-voltage power distribution unit, which includes: electrical components for electrically connecting to a battery pack and external electrical equipment respectively;

[0006] The enclosure includes a side wall and a bottom wall, the side wall and the bottom wall forming a mounting cavity and a first opening communicating with the mounting cavity, at least a portion of the electrical components being mounted in the mounting cavity; the side wall has a second opening communicating with the mounting cavity; the bottom wall has a third opening communicating with the mounting cavity.

[0007] In one embodiment, the high-voltage power distribution unit further includes a cover assembly, which includes a first cover, a second cover, and a third cover. The first cover covers the first opening and is located on the side of the side wall opposite to the bottom wall. The second cover covers the second opening, and the third cover covers the third opening.

[0008] In one embodiment, the electrical components include a current-carrying component and a BMS component, the BMS component being electrically connected to the battery pack and an external electrical device, respectively; the current-carrying component includes a battery-side module and a load-side module electrically connected to each other, the battery-side module being electrically connected to the battery pack, the load-side module being electrically connected to the external electrical device, at least a portion of the current-carrying component being disposed opposite to the first opening, and at least a portion of the BMS component being disposed opposite to the third opening.

[0009] In one embodiment, the first cover and the bottom wall are arranged along a first direction, and the mounting cavity includes a first sub-cavity and a second sub-cavity arranged along the first direction. The first sub-cavity is disposed close to the first cover, the flow-through component is installed in the first sub-cavity, and the BMS component is installed in the second sub-cavity.

[0010] In one embodiment, the second opening has a first sub-opening and a second sub-opening, the first sub-opening being in communication with the first sub-cavity, the second sub-opening being in communication with the second sub-cavity, a portion of the second cover covering the first sub-opening, and a portion of the second cover covering the second sub-opening.

[0011] In one embodiment, the sidewall has a first subwall, a wiring space is formed between one side of the electrical component and the first subwall, the high-voltage power distribution unit further includes a wire harness assembly for passing through the wiring space to connect the electrical component, and the second opening is formed in the first subwall.

[0012] In one embodiment, the housing further includes a first reinforcing component and a partition disposed between the first cover and the bottom wall. The first reinforcing component and the first cover form the first sub-cavity, and the first reinforcing component and the bottom wall form the second sub-cavity. The partition is fixed to the side of the first reinforcing component near the first cover, and a portion of the BMS component is fixedly connected to the first reinforcing component.

[0013] In one embodiment, the BMS component includes a first BMS and a second BMS, the first BMS being fixedly connected to the first reinforcing component, and the second BMS being installed on the bottom wall.

[0014] In one embodiment, the housing further includes a second reinforcing component, which is connected to the bottom wall and located on the side of the bottom wall facing the first cover, and the second BMS is fixedly connected to the second reinforcing component.

[0015] In one embodiment, the BMS assembly further includes a bracket and a third BMS. One end of the bracket is connected to the second reinforcing component, and the other end extends in a direction close to the first cover, forming a first mounting space with the bottom wall. At least a portion of the second BMS is located in the first mounting space. The third BMS is located on the side of the bracket away from the bottom wall and is connected to the bracket. The third BMS is located between the first BMS and the second BMS.

[0016] Secondly, embodiments of the present invention provide a vehicle including an electrically connected high-voltage power distribution device and a battery pack. The high-voltage power distribution device includes an electrically connected high-voltage power distribution component and a high-voltage power distribution unit as described above. The high-voltage power distribution unit is electrically connected to the battery pack, and the high-voltage power distribution component is used to be electrically connected to the high-voltage power distribution component unit.

[0017] The beneficial effects of the embodiments of this utility model are as follows:

[0018] In embodiments of this invention, a first opening formed by the sidewall and bottom wall, a second opening communicating with the mounting cavity in the sidewall, and a third opening communicating with the mounting cavity in the bottom wall allow for easy installation and maintenance by simply opening the corresponding mounting openings. This simplifies the maintenance of electrical components located near the bottom and sides, reducing operational difficulty. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of a high-voltage power distribution unit provided in an embodiment of this utility model;

[0021] Figure 2 yes Figure 1 Exploded view;

[0022] Figure 3 yes Figure 1 Exploded view of the middle section of the structure;

[0023] Figure 4 yes Figure 1 A schematic diagram showing the structure after removing the second cover;

[0024] Figure 5 yes Figure 1 A sectional view;

[0025] Figure 6 yes Figure 1 A structural schematic diagram of the first cover, the battery swapping connector, and the second copper busbar assembly;

[0026] Figure 7 yes Figure 1 A schematic diagram of the structure of the first copper busbar assembly.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Electrical components; 101. Battery swapping connector; 103. Battery terminal connector; 110. Overcurrent assembly; 111. First part; 112. Second part; 113. First copper busbar assembly; 114. Second copper busbar assembly; 130. BMS assembly; 131. Bracket; 133. First BMS; 134. Second BMS; 135. Third BMS; 200. Housing; 210. Side wall; 211. Second opening; 212. First sub-... 213, second sub-opening; 214, first sub-wall; 230, bottom wall; 231, third opening; 220, mounting cavity; 221, first sub-cavity; 223, second sub-cavity; 240, first opening; 250, first reinforcing assembly; 260, partition; 270, second reinforcing assembly; 280, first mounting space; 300, cover assembly; 310, first cover; 330, second cover; 350, third cover; 400, wire harness assembly. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0030] The high-voltage power distribution unit (PDU) is responsible for rationally distributing the power output from the vehicle battery or generator to various systems and equipment, ensuring that they receive a stable power supply.

[0031] In related technologies, high-voltage power distribution units often have only one mounting port. During installation, the electrical components of the high-voltage power distribution unit are installed into the enclosure through this port. When maintaining the high-voltage power distribution unit, the mounting port needs to be opened to inspect the internal electrical components. However, since the electrical components located at the bottom and sides are far from the mounting port, inspecting these components is cumbersome and difficult.

[0032] To solve the above-mentioned technical problems, firstly, this application provides a high-voltage power distribution unit, please refer to... Figure 1 and Figure 2The high-voltage power distribution unit includes an electrical component 100 and a housing 200. The electrical component 100 is used to electrically connect to the battery pack and external electrical equipment respectively. In this way, by electrically connecting the external electrical equipment to the battery pack, the power output from the battery pack can be distributed to the external electrical equipment, or the battery pack can be charged by the external electrical equipment.

[0033] In some examples, the high-voltage power distribution unit can be located inside the vehicle, which may also include a battery pack that can be mounted on the vehicle body. The battery pack can typically be located outside the high-voltage power distribution unit, for example, below the high-voltage power distribution unit or beside the high-voltage power distribution unit.

[0034] Please combine Figure 2 The battery connector 103 can be installed on the side wall 210 and is electrically connected to the battery pack. The battery connector 103 is connected to the electrical assembly 100 via a connecting copper busbar.

[0035] Please combine Figure 2 and Figure 3 The enclosure 200 includes a side wall 210 and a bottom wall 230, which form a mounting cavity 220 and a first opening 240 communicating with the mounting cavity 220. At least a portion of the electrical components 100 are mounted in the mounting cavity 220, thereby protecting the electrical components 100 from damage.

[0036] Please combine Figure 3 The side wall 210 has a second opening 211 that communicates with the mounting cavity 220. Thus, the electrical components 100 located on the side can be inspected and installed by entering the mounting cavity 220 through the second opening 211 in the side wall 210.

[0037] Please combine Figure 3 The bottom wall 230 has a third opening 231 that communicates with the mounting cavity 220. In this way, the electrical components 100 located on the side can be inspected and installed by entering the mounting cavity 220 through the third opening 231 in the bottom wall 230.

[0038] In these embodiments, the second opening 211 in the side wall 210, the third opening 231 in the bottom wall 230, and the first opening 240 formed by the side wall 210 and the bottom wall 230 facilitate maintenance by operators.

[0039] In some embodiments, the bottom wall 230 is located at the bottom of the high-voltage power distribution unit, the third opening 231 is the bottom opening of the high-voltage power distribution unit, the first opening 240 is the top opening of the high-voltage power distribution unit, the side wall 210 is located on the side of the high-voltage power distribution unit, and the second opening 211 is the side opening of the high-voltage power distribution unit. That is to say, the bottom, top and side of the high-voltage power distribution unit are all provided with openings, so that the electrical components 100 located at the bottom, top and side of the high-voltage power distribution unit can be inspected and installed through the openings at the bottom, top and side of the high-voltage power distribution unit respectively.

[0040] Please combine Figure 1 , Figure 4 as well as Figure 5 In some embodiments, the high-voltage power distribution unit further includes a cover assembly 300, including a first cover 310, a second cover 330 and a third cover 350. The first cover 310 covers the first opening 240 and is located on the side of the side wall 210 away from the bottom wall 230; the second cover 330 covers the second opening 211; and the third cover 350 covers the third opening 231.

[0041] The first opening 240 is covered or opened by the first cover 310, the second opening 211 is covered or opened by the second cover 330, and the third opening 231 is covered or opened by the third cover 350. This allows for maintenance by opening the corresponding cover. For example, when installing or maintaining an electrical component 100 near the first opening 240, simply open the first cover 310 to expose the electrical component 100 inside the mounting cavity 220. After installation or maintenance, the first cover 310 can be reinstalled. Similarly, when installing or maintaining an electrical component 100 near the second opening 211, simply open the second cover 330 to expose the electrical component 100 inside the mounting cavity 220. After installation or maintenance, the second cover 330 can be reinstalled. When installing or repairing the electrical components 100 near the third opening 231, simply open the third cover 350 to expose the electrical components 100 inside the mounting cavity 220. After installation or repair, simply reinstall the third cover 350.

[0042] Please combine Figure 4 In some embodiments, the electrical component 100 includes a current-carrying component 110 and a BMS component 130, the BMS component 130 being electrically connected to the battery pack and an external electrical device, respectively; the current-carrying component includes a battery-side module and a load-side module that are electrically connected to each other, the battery-side module being used to be electrically connected to the battery pack, and the load-side module being used to be electrically connected to the external electrical device, at least a portion of the current-carrying component being disposed opposite to the first opening 240, and at least a portion of the BMS component 130 being disposed opposite to the third opening.

[0043] In the electrical assembly 100, the BMS assembly 130 is prone to damage. Therefore, a portion of the BMS assembly 130 is positioned opposite the third opening 231, allowing access to the mounting cavity 220 through the third opening 231 for maintenance or installation of the BMS assembly 130 inside the mounting cavity 220. For example, simply removing the third cover 350 exposes at least a portion of the BMS assembly to the maintenance personnel, facilitating maintenance. Similarly, when maintenance or installation of the current-carrying assembly 110 is required, access to the mounting cavity 220 is made through the first opening 240. For example, removing the first cover 310 exposes the current-carrying assembly 110 to the maintenance personnel, facilitating maintenance.

[0044] Please combine Figure 3 In some embodiments, the first cover 310 and the bottom wall 230 are arranged along a first direction, and the mounting cavity 220 includes a first sub-cavity 221 and a second sub-cavity 223 arranged along the first direction. The first sub-cavity 221 is disposed close to the first cover 310, the flow assembly 110 is installed in the first sub-cavity 221, and the BMS assembly 130 is installed in the second sub-cavity 223.

[0045] In these embodiments, the internal space of the enclosure 200 is divided into two chambers arranged along a first direction, namely a first sub-chamber 221 and a second sub-chamber 223. The BMS assembly 130 and the overcurrent assembly 110 are disposed in the first and second mounting chambers distributed along the first direction, which makes full use of the space in the first direction of the high-voltage power distribution unit, resulting in shorter wiring distances and a more compact high-voltage power distribution unit.

[0046] In some examples, a partition 260 can be installed inside the housing 200. The partition can be fixedly connected to the side wall 210. The partition can divide the mounting cavity 220 into a first sub-cavity 221 and a second sub-cavity 223 arranged along a first direction.

[0047] In some embodiments, the second opening 211 has a first sub-opening 212 and a second sub-opening 213. The first sub-opening 212 communicates with the first sub-cavity 221, and the second sub-opening 213 communicates with the second sub-cavity 223. A portion of the second cover 330 covers the first sub-opening 212, and a portion of the second cover 330 covers the second sub-opening 213.

[0048] In these embodiments, the first sub-port 212 and the second sub-port 213 are covered by the second cover 330. By opening the second cover 330, the first sub-port 212 and the second sub-port 213 can be opened simultaneously, so that the components in the first sub-cavity 221 and the second sub-cavity 223 can be inspected and installed.

[0049] In some embodiments, the sidewall 210 has a first subwall 214, a wiring space is formed between one side of the electrical component 100 and the first subwall 214, the high-voltage power distribution unit also includes a wire harness assembly 400, the wire harness assembly is used to pass through the wiring space to connect the electrical component 100, and a second opening 211 is formed in the first subwall 214.

[0050] In these embodiments, the wiring harness assembly passes through the wiring space formed between one side of the electrical component 100 and the first sub-wall 214, making the wiring neater and more orderly. The second opening 211 is opened in the first sub-wall 214, so that after removing the second cover 330, the wiring harness assembly 400 can be exposed to the maintenance personnel, making it convenient for the installation and maintenance of the wiring harness assembly 400.

[0051] In some embodiments, the housing 200 further includes a first reinforcing component 250 and a partition 260 disposed between the first cover 310 and the bottom wall 230, the first reinforcing component being installed in the mounting cavity. In some examples, the first reinforcing component 250 may be connected to the side wall 210, thereby being installed in the mounting cavity. The first reinforcing component 250 may be connected to the side wall 210 by welding, screwing, riveting, or other methods. In some examples, the first reinforcing component 250 may be welded to the side wall 210.

[0052] In some embodiments, the first reinforcing component 250 and the first cover 310 form a first sub-cavity 221, the first reinforcing component 250 and the bottom wall 230 form a second sub-cavity 223, the partition 260 is fixed to the side of the first reinforcing component 250 near the first cover 310, and a portion of the BMS component 130 is fixedly connected to the first reinforcing component 250.

[0053] In these embodiments, a portion of the BMS component 130 is fixedly connected to the first reinforcing component 250. The connection between the BMS component 130 and the first reinforcing component 250 can be achieved through methods such as screwing, snap-fitting, or riveting. In some embodiments, the connection between the BMS component 130 and the first reinforcing component 250 can be screwed. The first reinforcing component 250 can be used to reinforce the housing 200, support the partition 260, and also install a portion of the BMS component 130. Fixedly connecting a portion of the BMS component 130 to the first reinforcing component 250 results in a smaller gap between the BMS component 130 and the first sub-cavity 221, leading to a more compact structure and saving installation space. Furthermore, fixedly connecting the BMS component to the first reinforcing component 250, compared to fixing the BMS component to the sidewall, reduces the horizontal space required.

[0054] Please combine Figure 2In some embodiments, the BMS assembly 130 includes a first BMS 133 and a second BMS 134. The first BMS 133 is fixedly connected to the first reinforcing component 250, and the second BMS 134 is mounted on the bottom wall 230. In this way, the weight of the BMS assembly 130 can be shared by the first reinforcing component 250 and the bottom wall 230, making the installation of the first BMS 133 and the second BMS 134 more stable. At the same time, it can also evenly distribute the multiple BMSs of the BMS assembly 130, such as the first BMS 133 and the second BMS 134, within the second sub-cavity 223.

[0055] In some embodiments, the housing 200 further includes a second reinforcing component 270, which is connected to the bottom wall 230 and located on the side of the bottom wall 230 facing the first cover 310. The second BMS134 is fixedly connected to the second reinforcing component 270.

[0056] Please combine Figure 5 In these embodiments, the bottom wall 230 of the high-voltage power distribution unit is reinforced by the second reinforcing component 270, and the second BMS134 is fixedly connected to the second reinforcing component 270, making the installation of the second BMS134 more stable. The second BMS134 and the second reinforcing component 270 can be connected by screws, welding, snap-fit, etc. In some embodiments, the second BMS134 and the second reinforcing component 270 are screwed together.

[0057] Please combine Figure 2 as well as Figure 5 In some embodiments, the BMS assembly 130 further includes a bracket 131 and a third BMS 135. One end of the bracket 131 is connected to the second reinforcing assembly 270, and the other end extends in a direction close to the first cover 310 and forms a first mounting space 280 with the bottom wall 230. At least a portion of the second BMS 134 is located in the first mounting space 280. The third BMS 135 is located on the side of the bracket 131 away from the bottom wall 230 and is connected to the bracket 131. The third BMS 135 is located between the first BMS 133 and the second BMS 135.

[0058] Thus, the high-voltage power distribution unit has three BMSs arranged along the first direction. The first BMS133 is fixedly connected to the first reinforcing component 250, the second BMS134 is installed on the bottom wall 230, and the third BMS135 is located between the first BMS133 and the second BMS134, making the three BMSs structure compact.

[0059] According to a second aspect of this application, a method for assembling a high-voltage distribution unit is also provided. This method can be applied to the aforementioned high-voltage distribution unit. Please refer to... Figure 2The electrical component 100 includes a battery swapping connector 101 and an overcurrent assembly 110. The overcurrent assembly 110 includes a first part 111 and a second part 112. The first part 111 includes a first copper busbar assembly 113 and a second copper busbar assembly 114. The assembly method includes:

[0060] Install the second part 112 into the mounting cavity 220 through the first opening 240, and connect the first copper bus assembly 113 to the second part 112.

[0061] Install the battery swapping connector 101 onto the first cover 310, and connect one end of the second copper busbar assembly 114 to the end of the battery swapping connector 101 facing the mounting cavity 220.

[0062] From the second opening 211, the other end of the second copper busbar assembly 114 is connected to the first copper busbar assembly 113.

[0063] Because the high-voltage power distribution unit in this embodiment has a compact structure and a small overall volume, the available space during assembly or maintenance is limited. In the assembly method of the high-voltage power distribution unit, a portion of the current-carrying component 110 is installed from the first opening 240, and the other end of the second copper busbar component 114 is connected to the first copper busbar component 113 from the second opening 211. This facilitates operation and simplifies the process.

[0064] Install the battery swapping connector 101 onto the first cover 310, and connect one end of the second copper busbar assembly 114 to the end of the battery swapping connector 101 facing the mounting cavity 220; then the first cover 310 can be connected to the side wall 210 to cover the first opening 240.

[0065] After the first cover 310 is connected to the side wall 210, the other end of the second copper busbar assembly 114 can be connected to the first copper busbar assembly 113 through the second opening 211.

[0066] After connecting the other end of the second copper busbar assembly 114 to the first copper busbar assembly 113 through the second opening 211, the second cover 330 can be connected to the side wall 210 to cover the second opening 211.

[0067] In some embodiments, the second part 112 may include a relay, a Hall sensor, etc.

[0068] In some embodiments, the relay can be mounted on the partition, and then the partition with the relay mounted can be installed into the mounting cavity through the first opening.

[0069] Install the battery swapping connector onto the cover, and connect one end of the second copper busbar assembly to the end of the battery swapping connector facing the mounting cavity;

[0070] From the second opening, the other end of the second copper busbar assembly is connected to the first copper busbar assembly.

[0071] In some embodiments, the TBOX main unit may be mounted on the side wall 210.

[0072] Please combine Figure 6 as well as Figure 7 In some embodiments, the battery swapping connector 101 is fixed to the first cover 310. Multiple battery swapping connectors 101 are configured; the figure shows three. Each battery swapping connector 101 can be associated with a set of positive and negative terminal electrical connection copper busbars. The three battery swapping connectors 101 can be associated with six positive and negative terminal electrical connection copper busbars, and the second copper busbar assembly 114 can include these six positive and negative terminal electrical connection copper busbars. The six positive and negative terminal electrical connection copper busbars are staggered, resulting in a compact structure.

[0073] The second copper busbar assembly 114 may include the aforementioned six positive and negative terminal electrical connection copper busbars. The six positive and negative terminal electrical connection copper busbars may be composed of four "L"-shaped copper busbars and two 3D bent copper busbars, and their width and thickness may be consistent, which allows for interlocking and manufacturing, reducing material waste and lowering costs.

[0074] Please combine Figure 2 The battery connector 103 can be installed on the side wall 210 and is electrically connected to the battery pack. The battery connector 103 is connected to the electrical component 100 through the first copper busbar assembly 113 and the second copper busbar assembly 114.

[0075] One end of the second copper busbar assembly 114 is connected to the end of the power swapping connector 101 facing the mounting cavity, and the other end can be sequentially connected from one side of the first cover 310 to the fixing point of the insulating post located on the same side.

[0076] The first copper busbar assembly 113 is mainly used to connect electrical components 100, such as relays. In some examples, the first copper busbar assembly 113 may include six copper busbars, which may consist of three straight copper busbars and three L-shaped copper busbars. The six copper busbars may be set to be of equal thickness and width, and they can be spliced ​​together to reduce costs. These six first copper busbars may be made of shared and compatible materials, and can be spliced ​​together as L-shaped copper busbars during manufacturing to reduce costs.

[0077] The first copper busbar assembly 113 may include a second copper busbar, which may include two busbars. These two busbars may be made by directly stamping sheet metal, which is simple and low-cost.

[0078] When assembling the six copper busbars connected by the battery swapping connector, they need to be pre-installed and fixed to the top cover first. The copper busbars at the battery end need to be pre-installed to the bottom plate of the electrical compartment. Then, the electrical connection and fixation are completed through the side inspection window.

[0079] Thirdly, embodiments of this application also provide a vehicle, which includes an electrically connected high-voltage power distribution device and a battery pack. The high-voltage power distribution device includes an electrically connected high-voltage power distribution component and the aforementioned high-voltage power distribution unit, wherein the high-voltage power distribution component unit is electrically connected to the battery pack, and the high-voltage power distribution component is used to be electrically connected to the high-voltage power distribution component unit.

[0080] In this embodiment, the high-voltage power distribution unit is electrically connected to the battery pack, and the high-voltage power distribution component is connected to the high-voltage power distribution unit. The high-voltage power distribution component can be used to connect to other electrical components of the vehicle (such as electric motors, air conditioning compressors, charging systems, etc.). This allows the power output from the battery pack to be distributed to the electric motor, air conditioning compressor, charging system, etc.

[0081] In other words, the aforementioned high-voltage power distribution unit is electrically connected to the battery pack, and the aforementioned high-voltage power distribution unit can be electrically connected to external electrical equipment through high-voltage power distribution components. In this way, by electrically connecting external electrical equipment to the battery pack, the power output from the battery pack can be distributed to the external electrical equipment, or the battery pack can be charged through the external electrical equipment.

[0082] In some embodiments, the high-voltage power distribution component is fixedly connected to the battery pack. This facilitates the replacement of the high-voltage power distribution component and the battery pack as a whole during battery swapping.

[0083] In some embodiments, the vehicle includes a fixed frame, within which the high-voltage power distribution unit and the battery pack are mounted. This makes the overall structure formed by the high-voltage power distribution unit and the battery pack more robust and reliable, providing excellent protection for both.

[0084] In some embodiments, the high-voltage power distribution component is detachably connected to the high-voltage power distribution component unit, and the high-voltage power distribution component is mounted on top of the battery pack. This detachable connection facilitates battery swapping. Mounting the high-voltage power distribution component on top of the battery pack, or arranging the high-voltage power distribution component and the battery pack along the vehicle's height, fully utilizes the space in the vehicle's height direction and reduces the space occupied in the vehicle's width and length directions.

[0085] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A high voltage power distribution unit, characterized by, The high-voltage power distribution unit comprises: an electrical assembly (100) for electrically connecting with a battery pack and an external electrical device, respectively; a box body (200) comprising a side wall (210) and a bottom wall (230), the side wall (210) and the bottom wall (230) forming a mounting cavity (220) and a first opening (240) in communication with the mounting cavity (220), at least part of the electrical assembly (100) being mounted in the mounting cavity (220); the side wall (210) being provided with a second opening (211) in communication with the mounting cavity (220); and the bottom wall (230) being provided with a third opening (231) in communication with the mounting cavity (220).

2. The high voltage distribution unit of claim 1, wherein, The high-voltage power distribution unit further comprises a cover assembly (300), the cover assembly (300) comprising a first cover (310), a second cover (330) and a third cover (350), the first cover (310) being arranged on the first opening (240) and located on a side of the side wall (210) away from the bottom wall (230), the second cover (330) being arranged on the second opening (211), and the third cover (350) being arranged on the third opening (231).

3. The high voltage distribution unit of claim 2, wherein, The electrical assembly (100) comprises an overcurrent assembly (110) and a BMS assembly (130), the BMS assembly (130) being electrically connected with the battery pack and the external electrical device, respectively; the overcurrent assembly comprising a battery-side module and a load-side module electrically connected with each other, the battery-side module being used for electrically connecting with the battery pack, the load-side module being used for electrically connecting with the external electrical device, at least part of the overcurrent assembly being arranged opposite to the first opening (240), and at least part of the BMS assembly (130) being arranged opposite to the third opening.

4. The high-voltage power distribution unit according to claim 3, wherein the first cover (310) and the bottom wall (230) are arranged along a first direction, the mounting cavity (220) comprises a first sub-cavity (221) and a second sub-cavity (223) arranged along the first direction, the first sub-cavity being arranged close to the first cover (310), the overcurrent assembly (110) being mounted in the first sub-cavity (221), and the BMS assembly (130) being mounted in the second sub-cavity (223).

5. The high voltage distribution unit of claim 4, wherein, the second opening (211) has a first sub-opening (212) and a second sub-opening (213), the first sub-opening (212) being in communication with the first sub-cavity (221), and the second sub-opening (213) being in communication with the second sub-cavity (223), a part of the second cover (330) covering the first sub-opening (212), and a part of the second cover (330) covering the second sub-opening (213).

6. The high-voltage power distribution unit according to claim 3, wherein The side wall (210) has a first sub-wall (214), and a wiring space is formed between one side of the electrical component and the first sub-wall (214), and the high-voltage power distribution unit further comprises a wiring harness assembly (400) for penetrating through the wiring space to connect the electrical component, and the second opening is arranged on the first sub-wall (214).

7. The high voltage distribution unit of claim 4, wherein, The box body (200) further comprises a first reinforcing assembly (250) and a partition plate (260) arranged between the first cover body (310) and the bottom wall (230), the first reinforcing assembly (250) forms the first sub-cavity (221) with the first cover body (310), the first reinforcing assembly (250) forms the second sub-cavity (223) with the bottom wall (230), the partition plate (260) is fixed to one side of the first reinforcing assembly (250) close to the first cover body (310), and part of the BMS assembly (130) is fixedly connected with the first reinforcing assembly (250).

8. The high voltage distribution unit of claim 7, wherein, The BMS assembly (130) comprises a first BMS (133) and a second BMS (134), the first BMS (133) is fixedly connected with the first reinforcing assembly (250), and the second BMS (134) is installed on the bottom wall (230).

9. The high voltage distribution unit of claim 8, wherein, The box body (200) further comprises a second reinforcing assembly (270), the second reinforcing assembly (270) is connected with the bottom wall (230) and located on one side of the bottom wall (230) facing the first cover body (310), and the second BMS (134) is fixedly connected with the second reinforcing assembly (270).

10. The high voltage distribution unit of claim 9, wherein, The BMS assembly further comprises a support (131) and a third BMS (135), one end of the support (131) is connected to the second reinforcing assembly (270), the other end extends in a direction close to the first cover body (310) and forms a first mounting space (280) with the bottom wall (230), at least part of the second BMS (134) is located in the first mounting space (280), the third BMS (135) is located on a side of the support (131) away from the bottom wall (230) and connected with the support (131), and the third BMS (135) is located between the first BMS (133) and the second BMS (134).

11. A vehicle characterized by comprising: The high-voltage power distribution device and the battery pack comprising an electrical connection, the high-voltage power distribution device comprising an electrical connection of high-voltage power distribution components and a high-voltage power distribution unit as claimed in any one of claims 1 to 10, wherein the high-voltage power distribution unit is electrically connected with the battery pack, and the high-voltage power distribution components are used to be electrically connected with the high-voltage power distribution unit.

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