High-voltage distribution box connecting structure and vehicle

Abstract

The utility model relates to a high-voltage distribution box connecting structure and a vehicle, the high-voltage distribution box connecting structure comprises a battery pack box body and a high-voltage distribution box, the bottom of the battery pack box body is provided with an opening, and a maintenance cover plate is installed at the opening; the high-voltage power distribution box is installed in the battery pack box body and located above the maintenance cover plate, power distribution box installation feet are fixedly arranged on the periphery of the high-voltage power distribution box, bidirectional installation bolts are connected to the power distribution box installation feet in an inserted mode, the bidirectional installation bolts abut against bolt lifting mechanisms, and the bolt lifting mechanisms are connected with the high-voltage power distribution box in an inserted mode. The power distribution box mounting feet are arranged on the periphery of the high-voltage power distribution box, the bidirectional mounting bolts are inserted into the power distribution box mounting feet, and the bidirectional mounting bolts abut against the bolt lifting mechanism, so that the maintenance cover plate at the bottom of the battery pack box body can be directly opened for maintenance, and the problem that the maintenance of the high-voltage power distribution box in related technologies needs to be carried out after the whole battery pack is detached from a whole vehicle is solved. And the high-voltage power distribution box is high in maintenance cost and long in working time, so that the technical problems of low maintenance cost and long working time of the high-voltage power distribution box are solved.

Description

Technical Field

[0001] The present application relates to the field of battery systems, and particularly to a connection structure for a high-voltage distribution box and a vehicle. Background Art

[0002] With the development of electric vehicles, the sales volume of new energy vehicles has gradually increased. There are increasingly higher requirements for the volume of high-voltage protection devices, with higher energy density and higher reliability. The high-voltage distribution box is a core component directly affecting the electrical control safety of the battery system. Among them, fuses and high-voltage DC contactors, as protection devices for cutting off the overload current and short-circuit current in the circuit, can prevent fire and explosion from posing safety hazards to personnel.

[0003] In the related art, for the maintenance of the high-voltage distribution box, the entire battery pack needs to be removed from the vehicle, and then the upper cover of the battery pack needs to be disassembled before maintenance can be carried out. The maintenance cost of the high-voltage distribution box is high and the working hours are long.

[0004] Therefore, it is necessary to design a new connection structure for the high-voltage distribution box to overcome the above problems. Utility Model Content

[0005] The present application provides a connection structure for a high-voltage distribution box and a vehicle, which can solve the technical problems that in the related art, for the maintenance of the high-voltage distribution box, the entire battery pack needs to be removed from the vehicle, and then the upper cover of the battery pack needs to be disassembled before maintenance can be carried out, and the maintenance cost of the high-voltage distribution box is high and the working hours are long.

[0006] In a first aspect, an embodiment of the present application provides a connection structure for a high-voltage distribution box, which includes: a battery pack box body and a high-voltage distribution box. The bottom of the battery pack box body has an opening, and a maintenance cover plate is installed at the opening; the high-voltage distribution box is installed in the battery pack box body and is located above the maintenance cover plate. Distribution box installation feet are fixedly provided around the high-voltage distribution box. A two-way installation bolt is inserted into the distribution box installation feet, and the high-voltage distribution box is fixed to the battery pack box body through the two-way installation bolt. A bolt lifting mechanism abuts against one side of the two-way installation bolt close to the maintenance cover plate, and the bolt lifting mechanism is inserted into the high-voltage distribution box.

[0007] In combination with the first aspect, in an embodiment, one end of the two-way installation bolt is provided as an internal hexagonal column, the internal hexagonal column is inserted into the distribution box installation feet, and the other end of the two-way installation bolt is provided as an external hexagonal column, and the external hexagonal column abuts against the bolt lifting mechanism.

[0008] In combination with the first aspect, in an embodiment, the outer diameter of the internal hexagonal column is smaller than the outer diameter of the external hexagonal column.

[0009] In combination with the first aspect, in one embodiment, a flange is provided at the connection between the internal hexagonal column and the external hexagonal column, and the outer diameter of the flange is greater than the outer diameter of the external hexagonal column.

[0010] In combination with the first aspect, in one embodiment, the bolt lifting mechanism includes a lifting cover, the lifting cover is inserted into the high-voltage power distribution box, a spring is provided inside the lifting cover, and the spring abuts against the lifting cover and the bi-directional mounting bolt.

[0011] In combination with the first aspect, in one embodiment, the spring is connected with a lifting piece, and the lifting piece abuts against the bi-directional mounting bolt.

[0012] In combination with the first aspect, in one embodiment, conductive busbars are provided on opposite sides of the high-voltage power distribution box, and the conductive busbars are fixed to the distribution box mounting feet through the bi-directional mounting bolts.

[0013] In combination with the first aspect, in one embodiment, the bi-directional mounting bolt is provided as an internal hexagonal bi-directional bolt or an external hexagonal bi-directional bolt.

[0014] In combination with the first aspect, in one embodiment, the battery pack box body includes a battery cell cavity and an electrical cavity, and the high-voltage power distribution box is installed in the electrical cavity.

[0015] In a second aspect, an embodiment of the present application provides a vehicle, and the vehicle includes the above-mentioned high-voltage power distribution box connection structure.

[0016] The beneficial effects brought by the technical solutions provided by the embodiments of the present application include:

[0017] By providing distribution box mounting feet around the high-voltage power distribution box, the distribution box mounting feet are inserted with bi-directional mounting bolts, and the bi-directional mounting bolts abut against the bolt lifting mechanism. When it is necessary to repair the high-voltage power distribution box, the maintenance cover plate at the bottom of the battery pack box body can be directly opened for repair or the high-voltage power distribution box can be removed from the opening, without the need to remove the entire battery pack from the vehicle. This solves the technical problems in the related art that when maintaining the high-voltage power distribution box, the entire battery pack needs to be removed from the vehicle and then the upper cover of the battery pack needs to be disassembled before repair, resulting in high maintenance costs and long working hours for the high-voltage power distribution box. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1Schematic diagram of a connection structure of a high-voltage distribution box provided by an embodiment of the present application;

[0020] Figure 2 Schematic diagram of a high-voltage distribution box provided by an embodiment of the present application;

[0021] Figure 3 Exploded view of the front of a high-voltage distribution box provided by an embodiment of the present application;

[0022] Figure 4 Exploded view of the bottom of a high-voltage distribution box provided by an embodiment of the present application;

[0023] Figure 5 Schematic diagram of a two-way mounting bolt provided by an embodiment of the present application.

[0024] In the figure: 1. Battery pack box body; 11. Maintenance cover plate; 12. Body; 13. Battery pack upper cover; 2. High-voltage distribution box; 21. Distribution box mounting feet; 22. Bolt lifting mechanism; 221. Lifting cover; 222. Spring; 223. Lifting piece; 3. Two-way mounting bolt; 4. Conductive busbar. Specific implementation manners

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0026] The embodiment of the present application provides a connection structure of a high-voltage distribution box and a vehicle, which can solve the technical problems that the maintenance of the high-voltage distribution box requires the entire battery pack to be removed from the vehicle and then the battery pack upper cover to be disassembled before maintenance can be carried out, resulting in high maintenance costs and long working hours for the high-voltage distribution box.

[0027] See Figure 1 and Figure 2As shown in the figure, an embodiment of the present application provides a connection structure for a high-voltage distribution box, which includes: a battery pack box body 1 and a high-voltage distribution box 2. The bottom of the battery pack box body 1 has an opening, and a maintenance cover plate 11 is installed at the opening. The high-voltage distribution box 2 is installed inside the battery pack box body 1 and is located above the maintenance cover plate 11. Distribution box mounting feet 21 are fixedly provided around the high-voltage distribution box 2. A two-way mounting bolt 3 is inserted into the distribution box mounting feet 21, and the high-voltage distribution box 2 is fixed to the battery pack box body 1 through the two-way mounting bolt 3. One side of the two-way mounting bolt 3 close to the maintenance cover plate 11 abuts against a bolt lifting mechanism 22, and the bolt lifting mechanism 22 is inserted into the high-voltage distribution box 2.

[0028] In this embodiment, the battery pack box body 1 includes a main body 12. A battery pack upper cover 13 is provided on the top of the main body 12. The maintenance cover plate 11 is installed at the bottom of the main body 12. The battery pack can be assembled by opening the battery pack upper cover 13, and the high-voltage distribution box 2 can be repaired by opening the maintenance cover plate 11. The high-voltage distribution box 2 is installed along the thickness direction of the main body 12. The length of the high-voltage distribution box 2 is less than the length of the maintenance cover plate 11, so that the high-voltage distribution box 2 can be taken out from the bottom of the battery pack box body 1. Both ends of the two-way mounting bolt 3 can be disassembled and assembled by tools. The two-way mounting bolt 3 can be assembled from one end and disassembled from the other end. One end of the two-way mounting bolt 3 away from the maintenance cover plate 11 passes through the distribution box mounting feet 21 and is bolted to the mounting feet inside the main body 12, so that the high-voltage distribution box 2 is fixed to the battery pack box body 1. One end of the two-way mounting bolt 3 away from the maintenance cover plate 11 abuts against the bolt lifting mechanism 22. By disassembling the bolt lifting mechanism 22, the two-way mounting bolt 3 can be loosened and the high-voltage distribution box 2 can be removed without turning the entire battery pack box body 1 by 180°. When the high-voltage distribution box 2 needs to be repaired, the maintenance cover plate 11 at the bottom of the battery pack box body 1 can be directly opened for repair or the high-voltage distribution box 2 can be removed from the opening without removing the entire battery pack from the vehicle, greatly reducing the production and maintenance costs.

[0029] In this embodiment, by arranging the distribution box mounting feet 21 around the high-voltage distribution box 2, the distribution box mounting feet 21 are inserted into the two-way mounting bolts 3, the two-way mounting bolts 3 abut against the bolt lifting mechanism 22, one end of the two-way mounting bolts 3 is inserted into the distribution box mounting feet 21, and the other end of the two-way mounting bolts 3 abuts against the bolt lifting mechanism 22, so that the high-voltage distribution box 2 can be assembled from the front of the battery pack box body 1 and can be repaired from the bottom of the battery pack box body 1 at the same time, realizing the front installation and reverse disassembly of the high-voltage distribution box 2. When the high-voltage distribution box 2 needs to be repaired, the maintenance cover plate 11 at the bottom of the battery pack box body 1 can be directly opened for repair or the high-voltage distribution box 2 can be removed from the opening, without removing the entire battery pack from the vehicle, solving the technical problems in the related art that the maintenance of the high-voltage distribution box requires the entire battery pack to be removed from the vehicle and then the upper cover of the battery pack to be disassembled before maintenance, resulting in high maintenance cost and long working hours of the high-voltage distribution box.

[0030] Further, referring to Figure 2 and Figure 5 As shown, in some embodiments, one end of the two-way mounting bolt 3 is provided as an inner hexagon column, the inner hexagon column is inserted into the distribution box mounting feet 21, the other end of the two-way mounting bolt 3 is provided as an outer hexagon column, and the outer hexagon column abuts against the bolt lifting mechanism 22.

[0031] In this embodiment, one end of the two-way mounting bolt 3 can be provided as the inner hexagon column, the other end of the two-way mounting bolt 3 can be provided as the outer hexagon column, the inner hexagon column is inserted into the distribution box mounting feet 21, and the outer hexagon column abuts against the bolt lifting mechanism 22, so that the two-way mounting bolt 3 is supported by the bolt lifting mechanism 22 and limited by the distribution box mounting feet 21 at the same time.

[0032] Further, referring to Figure 5 As shown, in some embodiments, the outer diameter of the inner hexagon column is smaller than the outer diameter of the outer hexagon column.

[0033] In this embodiment, the outer diameter of the inner hexagon column is smaller than the outer diameter of the outer hexagon column, so that the inner hexagon column is inserted into the distribution box mounting feet 21, and at the same time the outer hexagon column abuts against the distribution box mounting feet 21, so that the two-way mounting bolt 3 can be fixed to the outside of the high-voltage distribution box 2 through the bolt lifting mechanism 22, which is convenient for assembly and disassembly.

[0034] Further, referring to Figure 5 As shown, in some embodiments, a flange is provided at the connection between the inner hexagon column and the outer hexagon column, and the outer diameter of the flange is larger than the outer diameter of the outer hexagon column.

[0035] In this embodiment, the outer diameter of the flange is greater than that of the external hexagonal column, increasing the contact area between the external hexagonal column and the mounting foot 21 of the distribution box, and improving the mounting stability of the high-voltage distribution box 2.

[0036] Further, referring to Figure 4 As shown, in some embodiments, the bolt lifting mechanism 22 includes a lifting cover 221, the lifting cover 221 is inserted into the high-voltage distribution box 2, a spring 222 is provided in the lifting cover 221, and the spring 222 abuts against the lifting cover 221 and the double-sided mounting bolt 3.

[0037] In this embodiment, the lifting cover 221 is inserted into the high-voltage distribution box 2, facilitating the assembly and disassembly of the double-sided mounting bolt 3. The spring 222 abuts against the lifting cover 221 and the double-sided mounting bolt 3, providing an assembly margin for the double-sided mounting bolt 3. In other embodiments, one end of the spring 222 is fixed to the lifting cover 221, and the other end of the spring 222 abuts against the double-sided mounting bolt 3.

[0038] Further, referring to Figure 4 As shown, in some embodiments, the spring 222 is connected with a lifting piece 223, and the lifting piece 223 abuts against the double-sided mounting bolt 3.

[0039] In this embodiment, the lifting piece 223 can increase the contact area between the spring 222 and the double-sided mounting bolt 3, enabling the double-sided mounting bolt 3 to be stably supported by the spring 222 within the lifting cover 221.

[0040] Further, referring to Figures 1 - 3 As shown, in some embodiments, conductive busbars 4 are provided on opposite sides of the high-voltage distribution box 2, and the conductive busbars 4 are fixed to the mounting feet 21 of the distribution box through the double-sided mounting bolts 3.

[0041] In this embodiment, a mounting bolt is inserted into the internal hexagonal column of the double-sided mounting bolt 3, and the thread of the mounting bolt is matched with the internal thread of the conductive busbar 4, fixing the conductive busbar 4 to the mounting foot 21 of the distribution box, forming an electrical connection point with the mounting foot 21 fixed to the conductive busbar 4. A battery positive busbar is provided on one side of the high-voltage distribution box 2, and an output positive busbar is correspondingly provided on the opposite side of the high-voltage distribution box 2. A battery negative busbar is provided on one side of the high-voltage distribution box 2, and an output negative busbar is correspondingly provided on the opposite side of the high-voltage distribution box 2.

[0042] Further, referring to Figure 2 and Figure 5 As shown, in some embodiments, the double-sided mounting bolt 3 is provided as an internal hexagonal double-sided bolt or an external hexagonal double-sided bolt.

[0043] In this embodiment, both ends of the two-way mounting bolt 3 can be set as internal hexagon columns. The internal hexagon of one internal hexagon column faces upward, and the internal hexagon of the other internal hexagon column faces downward. The outer diameters of the two internal hexagon columns can be equal, and a flange is provided at the connection of the two internal hexagon columns, so that the two-way mounting bolt 3 is inserted into the distribution box mounting foot 21 and abuts against the bolt lifting mechanism 22 at the same time. The outer diameters of the two internal hexagon columns can also be unequal. In other embodiments, both ends of the two-way mounting bolt 3 can be set as external hexagon columns.

[0044] Further, as shown in Figure 1 In some embodiments, the battery pack housing 1 includes a battery cell cavity and an electrical cavity, and the high-voltage distribution box 2 is installed in the electrical cavity.

[0045] In this embodiment, the battery pack housing 1 is partitioned into the battery cell cavity and the electrical cavity by a partition board. Battery cells are installed in the battery cell cavity, and the high-voltage distribution box 2 is installed in the electrical cavity. The partition board is provided with mounting feet on the side close to the electrical cavity, and the mounting feet cooperate with the distribution box mounting feet 21 to fix the high-voltage distribution box 2.

[0046] The embodiment of the present application provides a vehicle, and the vehicle includes the above-mentioned high-voltage distribution box connection structure.

[0047] In this embodiment, the vehicle is equipped with the high-voltage distribution box connection structure. Opening the battery pack upper cover 13 can assemble the battery pack inside the vehicle, and opening the maintenance cover plate 11 can repair the high-voltage distribution box 2 inside the vehicle. The two-way mounting bolt 3 can be assembled from one end and disassembled from the other end. One end of the two-way mounting bolt 3 away from the maintenance cover plate 11 passes through the distribution box mounting foot 21 and is bolted to the mounting foot inside the body 12, so that the high-voltage distribution box 2 is fixed to the battery pack housing 1. One end of the two-way mounting bolt 3 away from the maintenance cover plate 11 abuts against the bolt lifting mechanism 22. Disassembling the bolt lifting mechanism 22 can loosen the two-way mounting bolt 3 and remove the high-voltage distribution box 2. When the high-voltage distribution box 2 needs to be repaired, the maintenance cover plate 11 at the bottom of the battery pack housing 1 can be directly opened for repair or the high-voltage distribution box 2 can be removed from the opening, without removing the entire battery pack from the vehicle, which greatly reduces the production and maintenance costs.

[0048] During the assembly of the battery pack, first install the maintenance cover plate 11 at the opening, then install the battery cell and related accessories in the battery cell cavity, then insert the two-way installation bolt 3 into the installation foot 21 of the power distribution box to fix the bolt lifting mechanism 22, complete the assembly of the high-voltage power distribution box 2, then insert the conductive busbar 4 into the two-way installation bolt 3 and fix it, so that it is installed on both sides of the high-voltage power distribution box 2, and finally install the upper cover 13 of the battery pack; when the high-voltage power distribution box 2 needs to be repaired, first lift the vehicle, remove the maintenance cover plate 11, then remove all the bolt lifting mechanisms 22 and the two-way installation bolts 3 around the high-voltage power distribution box 2, then remove the high-voltage power distribution box 2, repair the high-voltage power distribution box 2, pre-tighten the two-way installation bolts 3 and assemble all the bolt lifting mechanisms 22, and finally install the maintenance cover plate 11, that is, complete the repair of the high-voltage power distribution box 2. It is not necessary to disassemble the entire battery pack to maintain the high-voltage power distribution box 2, which greatly reduces the production and maintenance costs.

[0049] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0050] It should be noted that in the present application, 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 terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0051] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A connection structure for a high-voltage distribution box, characterized in that, It includes: A battery pack box body (1), the bottom of the battery pack box body (1) has an opening, and a maintenance cover plate (11) is installed at the opening; A high-voltage distribution box (2), the high-voltage distribution box (2) is installed in the battery pack box body (1) and is located above the maintenance cover plate (11). Distribution box mounting feet (21) are fixedly arranged around the high-voltage distribution box (2). A two-way mounting bolt (3) is inserted into the distribution box mounting feet (21), and the high-voltage distribution box (2) is fixed to the battery pack box body (1) through the two-way mounting bolt (3). One side of the two-way mounting bolt (3) close to the maintenance cover plate (11) abuts against a bolt lifting mechanism (22), and the bolt lifting mechanism (22) is inserted into the high-voltage distribution box (2).

2. The high-voltage power distribution box connection structure according to claim 1, characterized in that, One end of the two-way mounting bolt (3) is set as an internal hexagonal column, the internal hexagonal column is inserted into the distribution box mounting feet (21), the other end of the two-way mounting bolt (3) is set as an external hexagonal column, and the external hexagonal column abuts against the bolt lifting mechanism (22).

3. The high-voltage power distribution box connection structure according to claim 2, characterized in that, The outer diameter of the internal hexagonal column is smaller than the outer diameter of the external hexagonal column.

4. The high-voltage power distribution box connection structure according to claim 2, characterized in that, A flange is provided at the connection between the internal hexagonal column and the external hexagonal column, and the outer diameter of the flange is larger than the outer diameter of the external hexagonal column.

5. The high-voltage power distribution box connection structure according to claim 1, wherein, The bolt lifting mechanism (22) includes a lifting cover (221), the lifting cover (221) is inserted into the high-voltage distribution box (2), a spring (222) is arranged in the lifting cover (221), and the spring (222) abuts against the lifting cover (221) and the two-way mounting bolt (3).

6. The high-voltage power distribution box connection structure according to claim 5, characterized in that, The spring (222) is connected with a lifting piece (223), and the lifting piece (223) abuts against the two-way mounting bolt (3).

7. The high-voltage power distribution box connection structure according to claim 1, characterized in that, Conductive busbars (4) are arranged on opposite sides of the high-voltage distribution box (2), and the conductive busbars (4) are fixed to the distribution box mounting feet (21) through the two-way mounting bolts (3).

8. The high-voltage distribution box connection structure according to claim 1, wherein, The two-way mounting bolt (3) is set as an internal hexagonal two-way bolt or an external hexagonal two-way bolt.

9. The high-voltage distribution box connection structure according to claim 1, wherein, The battery pack box body (1) includes a battery cell cavity and an electrical cavity, and the high-voltage distribution box (2) is installed in the electrical cavity.

10. A vehicle, characterized in that, The vehicle includes the high-voltage distribution box connection structure as described in claim 1.

Images