Battery pack box body

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery pack box body which comprises a front beam plate and a rear beam plate which are symmetrically arranged, side beam plates are symmetrically arranged between the front beam plate and the rear beam plate, and bottom plates are arranged at the bottoms of the front beam plate, the rear beam plate and the two side beam plates; middle partition plate supporting beams are symmetrically arranged on the inner walls of the two side beam plates, a middle partition plate is arranged on the two partition plate supporting beams, the rear end of the middle partition plate makes contact with the inner wall of the rear beam plate, a front baffle through groove is formed in the front end of the middle partition plate, a vertical front baffle is arranged in the front baffle through groove, and the bottom end of the front baffle is perpendicularly connected with the bottom plate. A high-voltage box module mounting cavity is formed between the front baffle and the front beam plate, a battery cell module mounting cavity is formed between the front baffle and the rear beam plate, and the battery cell module mounting cavity is divided into an upper-layer battery cell module mounting cavity and a lower-layer battery cell module mounting cavity by a middle partition plate. The box body is simple in structure and compact in internal structure, and rapid and stable assembly of the high-voltage box module and the two battery cell modules can be realized.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a battery pack housing. Background Technology

[0002] Currently, new energy vehicles have received widespread attention from all sectors of society due to their excellent environmental performance, and the requirements for them are constantly increasing. As a type of new energy vehicle, electric vehicles are also developing towards higher safety, higher energy density, and lighter weight. The main factor determining the driving range of an electric vehicle is the power supply battery. Different specifications of power supply batteries can be selected for different vehicle models to meet driving requirements.

[0003] Battery packs used in electric vehicles typically consist of multiple battery modules stacked one on top of the other within the same housing. These modules are then connected and connected to the external network via a high-voltage box. Because the battery modules are stacked close together and housed within the same housing as the high-voltage box, they can interfere with each other during operation. Furthermore, external vibrations can cause the cell module connections to loosen or break.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the problems of the prior art and provide a battery pack housing to solve the technical problems in the traditional technology where the high voltage box module and the cell module share a space and there is mutual interference, and the two vertically arranged cell modules cannot be firmly fixed, so the connection of the cell modules is prone to loosening or breaking under external vibration.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A battery pack housing includes a symmetrically arranged front beam and rear beam, with side beams symmetrically arranged between the front and rear beams, and a bottom plate at the bottom of the front beam, the rear beam, and the two side beams. A partition support beam is symmetrically arranged on the inner wall of the two side beams, and a partition is mounted on each of the two partition support beams. The rear end of the partition contacts the inner wall of the rear beam, and the front end of the partition has a front baffle groove. A vertical front baffle is disposed within the front baffle groove, and the bottom end of the front baffle is perpendicularly connected to the bottom plate. The front baffle and the front beam form a high-voltage box module mounting cavity, and the front baffle and the rear beam form a cell module mounting cavity. The cell module mounting cavity is divided into an upper cell module mounting cavity and a lower cell module mounting cavity by the partition.

[0008] Furthermore, it also includes a box cover with an edge, and a plurality of box cover screw holes are provided on the edge; the top of the front beam plate, the rear beam plate, and the two side beam plates are provided with rivet nuts corresponding to the box cover screw holes, and the box cover screw holes and the rivet nuts are connected by box cover screws.

[0009] Furthermore, the rear beam plate includes an inner protrusion, and an upper protective plate is provided between the top of the inner protrusion and the top of the front baffle.

[0010] Furthermore, the top of the inner protrusion and the front baffle are horizontal.

[0011] Furthermore, the upper protective plate includes a protective plate body and support plates vertically disposed on both sides of the protective plate body, and an outwardly folded right-angle connecting edge is provided on the bottom side of the support plate. The right-angle connecting edge, the inner protrusion, and the top of the front baffle are provided with protective plate connecting holes, which are screwed together by protective plate screws.

[0012] Furthermore, the upper part of the front baffle is fixedly connected to the inner walls of the two side beams by front baffle support blocks.

[0013] Furthermore, two brackets are provided on the side of the front baffle, and electrical connection terminals are provided on the brackets.

[0014] Furthermore, the front beam plate is provided with several sockets, and the inner side of the sockets is connected to the mounting cavity of the high-voltage box module.

[0015] Furthermore, the front beam plate, the rear beam plate, and the two side beam plates are all hollow plates, and several reinforcing ribs are provided in the hollow cavities.

[0016] Furthermore, the front beam plate, the rear beam plate, the two side beam plates, and the bottom plate are all made of aluminum.

[0017] This utility model provides a battery pack housing that uses a front baffle to divide the interior into independent high-voltage box module mounting chambers and cell module mounting chambers. A middle partition further divides the cell module mounting chambers into upper and lower cell module mounting chambers, providing independent mounting space for the high-voltage box module and the two vertically stacked cell modules. This not only allows for orderly installation but also ensures that the modules do not interfere with each other during operation. The housing is simple in structure and compact internally, enabling rapid and stable assembly of the high-voltage box module and the two cell modules. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of a battery pack housing according to the present invention;

[0019] Figure 2 This is a cross-sectional view of a battery pack housing according to the present invention;

[0020] Figure 3 This is a first-view exploded view of the interior of a battery pack housing according to the present invention;

[0021] Figure 4 This is a second-view exploded view of the interior of a battery pack housing according to the present invention.

[0022] Illustration markings:

[0023] 1-Front beam;

[0024] 2-Rear beam plate, 201-Inner convex part;

[0025] 3-Side beams;

[0026] 4-Base plate;

[0027] 5-Cell module mounting cavity, 501-Upper cell module mounting cavity, 502-Lower cell module mounting cavity;

[0028] 6-Box lid, 601-Edge, 602-Box lid screw holes;

[0029] 7-Upper protective plate, 701-Protective plate body, 702-Support plate, 703-Right-angle connecting edge;

[0030] 8-Diaphragm support beam;

[0031] 9-Middle partition, 901-Front baffle through groove;

[0032] 10 - High-voltage box module mounting cavity;

[0033] 11-Front bezel;

[0034] 12-Rivet nut;

[0035] 13 - Protective plate screws;

[0036] 14-Front panel support block;

[0037] 15-Staff;

[0038] 16 - Electrical connection terminals;

[0039] 17-Socket;

[0040] 18-Reinforcing ribs. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] like Figures 1-4 As shown, this solution provides a battery pack housing, including a symmetrically arranged front beam plate 1 and a rear beam plate 2. Side beam plates 3 are symmetrically arranged between the front beam plate 1 and the rear beam plate 2, and a bottom plate 4 is provided at the bottom of the front beam plate 1, the rear beam plate 2, and the two side beam plates 3. The front beam plate 1, the rear beam plate 2, the two side beam plates 3, and the bottom plate 4 are interconnected to form a rectangular housing structure. Central partition support beams 8 are symmetrically arranged on the inner walls of the two side beam plates 3, and central partition plates 9 are provided on the two central partition support beams 8. The central partition plates 9 can be connected to the central partition support beams 8 by screws. The rear end contacts the inner wall of the rear beam plate 2. The front end of the partition plate 9 is provided with a front baffle through groove 901, and a vertical front baffle 11 is provided in the front baffle through groove 901. The bottom end of the front baffle 11 is vertically connected to the bottom plate 4, and the top extends out of the front baffle through groove 901 and is horizontal with the top of the rear beam plate 2. The front baffle 11 and the front beam plate 1 form a high-voltage box module mounting cavity 10, and the front baffle 11 and the rear beam plate 2 form a cell module mounting cavity 5. The cell module mounting cavity 5 is divided into an upper cell module mounting cavity 501 and a lower cell module mounting cavity 502 by the partition plate 9.

[0043] The above structure divides the battery pack housing into a high-voltage box module mounting cavity 10, and an upper-layer cell module mounting cavity 501 and a lower-layer cell module mounting cavity 502. The high-voltage box module mounting cavity 10 provides independent space for the installation of the high-voltage box module and, with the help of the front baffle 11, isolates it from the cell module, ensuring that its operation is not affected by the battery module.

[0044] The upper battery cell module mounting cavity 501 and the lower battery cell module mounting cavity 502 facilitate the stacking of two battery cell modules, and the vertical electrical connection can be achieved simply by using electrical connectors such as wire harnesses or copper busbars.

[0045] like Figure 1As shown, it also includes a box cover 6 with an edge 601, and a plurality of box cover screw holes 602 are provided on the edge 601; the top of the front beam plate 1, the rear beam plate 2, and the two side beam plates 3 are provided with rivet nuts 12 corresponding to the box cover screw holes 602, and the box cover screw holes 602 and the rivet nuts 12 are connected by box cover screws to achieve the purpose of sealing the box cover 6 to the box body.

[0046] To enhance sealing, this embodiment also provides sealing rings on the edge 601 and the top of the housing, namely the top of the front beam plate 1, the rear beam plate 2, and the two side beam plates 3.

[0047] like Figure 4 As shown, the rear beam plate 2 includes an inner protrusion 201, and an upper protective plate 7 is provided between the top of the inner protrusion 201 and the top of the front baffle 11. The upper protective plate 7 can protect the battery module located in the upper battery module mounting cavity 501.

[0048] It should be noted that the top of the inner protrusion 201 and the front baffle 11 are horizontal, which can ensure the horizontal installation of the upper protective plate 7, so that it can better act on the upper part of the battery cell module in the upper battery cell module mounting cavity 501.

[0049] like Figure 2 As shown, in this embodiment, the upper protective plate 7 includes a protective plate body 701 and support plates 702 vertically disposed on both sides of the protective plate body 701. An outwardly folded right-angle connecting edge 703 is provided on the bottom side of the support plate 702. The right-angle connecting edge 703, the inner protrusion 201, and the top of the front baffle 11 are provided with protective plate connecting holes, which are screwed together by protective plate screws 13.

[0050] The upper protective plate 7 with a support plate can provide vertical height extension for the upper battery cell module. Furthermore, by selecting upper protective plates 7 with support plates 702 of different heights, it can accommodate battery cell modules of different heights, providing the enclosure with adaptability to battery cell modules of multiple specifications.

[0051] The upper part of the front baffle 11 is fixed to the inner wall of the two side beams 3 by front baffle support blocks 14, thereby providing stable support for the top of the front baffle 11 and making it firmly and vertically set on the base plate 4.

[0052] like Figure 3 and Figure 4As shown, in order to facilitate the electrical connection between the upper and lower battery cell modules and the high-voltage box module, this embodiment also provides two brackets 15 on the side of the front baffle 11, and provides electrical connection terminals 16 on the brackets 15. The two electrical connection terminals 16 correspond to the upper battery cell module mounting cavity 501 and the lower battery cell module mounting cavity 502, respectively, and are used to electrically connect the battery cell modules in each mounting cavity, thereby enabling better quick connection with the high-voltage box module located in the high-voltage box module mounting cavity 10 through the copper busbar.

[0053] A plurality of sockets 17 are provided on the front beam plate 1. The inner side of the sockets 17 is connected to the high voltage box module mounting cavity 10, and is used to quickly connect the high voltage box module installed in the high voltage box module mounting cavity 10 to the external connector.

[0054] As an optimization of this embodiment, the front beam plate 1, the rear beam plate 2, and the two side beam plates 3 are all hollow plates, and a number of reinforcing ribs 18 are provided in the hollow cavity. This structure can not only reduce the weight of the box, but also achieve the effect of heat insulation and sound insulation, so that the internal operating environment of the box is isolated from the outside of the box as much as possible.

[0055] In addition, the front beam plate 1, the rear beam plate 2, the two side beam plates 3, and the bottom plate 4 are all made of aluminum, which has the advantages of being lightweight, high temperature resistant, and having good thermal conductivity.

[0056] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack housing, characterized in that, The system includes a symmetrically arranged front beam plate (1) and a rear beam plate (2), with side beam plates (3) symmetrically arranged between the front beam plate (1) and the rear beam plate (2). A bottom plate (4) is provided at the bottom of the front beam plate (1), the rear beam plate (2), and the two side beam plates (3). A central partition support beam (8) is symmetrically arranged on the inner wall of the two side beam plates (3), and a central partition plate (9) is provided on the two central partition support beams (8). The rear end of the central partition plate (9) contacts the inner wall of the rear beam plate (2), and the front end of the central partition plate (9) has an opening. A front baffle through groove (901) is provided, and a vertical front baffle (11) is provided in the front baffle through groove (901). The bottom end of the front baffle (11) is vertically connected to the bottom plate (4). The front baffle (11) and the front beam plate (1) form a high voltage box module mounting cavity (10). The front baffle (11) and the rear beam plate (2) form a cell module mounting cavity (5). The cell module mounting cavity (5) is divided into an upper cell module mounting cavity (501) and a lower cell module mounting cavity (502) by the middle partition plate (9).

2. The battery pack housing according to claim 1, characterized in that, It also includes a box cover (6) with an edge (601) and a plurality of box cover screw holes (602) provided on the edge (601); the top of the front beam plate (1), the rear beam plate (2) and the two side beam plates (3) are provided with rivet nuts (12) corresponding to the box cover screw holes (602), and the box cover screw holes (602) and the rivet nuts (12) are screwed together by box cover screws.

3. A battery pack housing according to claim 1 or 2, characterized in that, The rear beam plate (2) includes an inner protrusion (201), and an upper protective plate (7) is provided between the top of the inner protrusion (201) and the top of the front baffle (11).

4. A battery pack housing according to claim 3, characterized in that, The top of the inner protrusion (201) and the front baffle (11) are horizontal.

5. A battery pack housing according to claim 3, characterized in that, The upper protective plate (7) includes a protective plate body (701) and a support plate (702) vertically disposed on both sides of the protective plate body (701). A right-angle connecting edge (703) folded outward is provided on the bottom side of the support plate (702). The right-angle connecting edge (703), the inner protrusion (201), and the top of the front baffle (11) are provided with protective plate connecting holes, which are screwed together by protective plate screws (13).

6. A battery pack housing according to claim 1, characterized in that, The upper part of the front baffle (11) is fixedly connected to the inner walls of the two side beams (3) by front baffle support blocks (14).

7. A battery pack housing according to claim 6, characterized in that, Two brackets (15) are also provided on the side of the front baffle (11), and electrical connection terminals (16) are provided on the brackets (15).

8. A battery pack housing according to claim 1, characterized in that, The front beam plate (1) is provided with a number of sockets (17), and the inner side of the sockets (17) is connected to the high-voltage box module mounting cavity (10).

9. A battery pack housing according to claim 1, characterized in that, The front beam plate (1), the rear beam plate (2), and the two side beam plates (3) are all hollow plates, and a number of reinforcing ribs (18) are provided in the hollow cavity.

10. A battery pack housing according to claim 1 or 9, characterized in that, The front beam plate (1), the rear beam plate (2), the two side beam plates (3), and the bottom plate (4) are all made of aluminum.

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