Battery pack assembly box body

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery pack assembly box body which comprises a box body and a top cover, an annular turnup corresponding to the top of the box body is arranged at a bottom port of the top cover, a plurality of screw through holes are formed in the annular turnup, and top cover screws are screwed with pressing rivet nut columns arranged at the top of the box body through the screw through holes; frame supporting strips with cavity grooves are symmetrically arranged at the bottom of the box body, frame connecting holes are formed in the bottoms of the frame supporting strips, locking nuts are embedded in the cavity grooves corresponding to the frame connecting holes, and locking screws penetrate through frame screw holes in a vehicle frame and then are connected with the locking nuts in a screwed mode after passing through the frame connecting holes. The assembly box body is simple in structure, easy to process and good in assembly effect, and can provide a sealed working environment for the battery cell module; the frame supporting strips are symmetrically arranged on the bottom side of the box body, so that the box body can be conveniently and quickly screwed with a frame of a vehicle through screws, and then the box body can be firmly connected with the frame of the vehicle.

Description

Technical Field

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

[0002] With the development of the times, the requirements for energy conservation and environmental protection in vehicles are becoming increasingly stringent. The hybrid light truck industry is developing rapidly. Compared with traditional trucks, hybrid light trucks have many advantages such as lower fuel consumption, lower noise, and environmental friendliness. Their low fuel consumption can significantly reduce operating costs, making them widely popular among truck drivers. Currently, the battery pack sizes of hybrid light trucks vary. However, the space for the battery pack is limited due to the many parts in the vehicle chassis. It must meet the overall space requirements of the vehicle, as well as the pure electric range requirements. This directly translates into determining the required capacity (in kilowatt-hours) for the battery pack.

[0003] New energy vehicles have received widespread attention from all sectors of society due to their excellent environmental performance, and the requirements for new energy vehicles are constantly increasing. As a type of new energy vehicle, electric vehicles are also developing towards higher safety, higher energy density, and lighter weight.

[0004] Battery packs used in electric vehicles typically consist of multiple cell modules connected in series. This means that multiple cell modules are horizontally stacked within the same housing and then connected in series. The core cell module is configured with a specific number of cells to meet the required output voltage, and all the cells are connected via copper busbars to output the voltage.

[0005] The existing battery pack enclosure is not only complex in structure, but also cannot ensure a precise fit between the cover and the enclosure, which makes it impossible to form a seal during subsequent assembly. This can lead to external interference with the battery cell modules installed inside the enclosure, resulting in a reduction in the battery pack's lifespan.

[0006] In addition, when fixing the battery pack to the vehicle, it is generally done by fixing it to the vehicle frame. However, traditional battery packs do not have this fixing structure and require external clamping devices for fixing. Because the battery pack itself is very heavy, it is also very easy for it to detach from the vehicle during long-term use.

[0007] Therefore, there is an urgent need for a battery pack enclosure that is easy to install on the vehicle body and allows for quick packaging and disassembly of the battery modules. Utility Model Content

[0008] The purpose of this utility model is to overcome the problems of the prior art and provide a battery pack assembly housing. This solution addresses the issues of traditional battery pack housings, which are not only structurally complex but also fail to ensure precise fit between the cover and the housing, resulting in a lack of seal during subsequent assembly. This leads to external interference with the battery cell modules installed inside the housing, reducing the battery pack's lifespan. Additionally, the use of external clamping devices for fixing the battery pack, due to its high weight, makes it prone to detachment from the vehicle during long-term use.

[0009] The above objectives are achieved through the following technical solutions:

[0010] A battery pack assembly housing includes a housing and a top cover. The bottom port of the top cover is provided with an annular flange corresponding to the top of the housing. The annular flange has a plurality of screw through holes. The top cover screws are screwed to the press-fit nut posts provided on the top of the housing through the screw through holes. The bottom of the housing is symmetrically provided with frame support bars with cavities. A frame connection hole is provided at the bottom of the frame support bar. A locking nut is embedded in the cavity corresponding to the frame connection hole. The locking screw passes through the frame screw hole on the vehicle frame and then through the frame connection hole to be screwed to the locking nut.

[0011] Furthermore, the top cover includes a top cover receiving cavity, and the box body includes a box body receiving cavity. After the top cover and the box body are connected, they form a cell module mounting cavity. The length and width of the top cover receiving cavity are the same as the length and width of the box body receiving cavity.

[0012] Furthermore, an annular sealing ring is provided at the bottom of the annular flange, and the annular sealing ring has a number of sealing ring through holes corresponding to the number of screw through holes.

[0013] Furthermore, ribs are symmetrically arranged in the cavity, and the two ribs divide the cavity into a first cavity, a locking nut mounting cavity, and a second cavity that are parallel to each other. The locking nut is arranged in the locking nut mounting cavity.

[0014] Furthermore, the rib is provided with a protrusion on the side facing the locking nut mounting cavity, and a nut groove is formed between the two protrusions for the locking nut to slide.

[0015] Furthermore, the bottom of the frame support bar is also provided with a through groove for inserting a nut through the frame connecting hole symmetrically about the frame connecting hole.

[0016] Furthermore, each of the frame support bars is provided with two frame connection holes.

[0017] Furthermore, both the box body and the top cover are square.

[0018] Furthermore, both the housing and the frame support bars are made of aluminum.

[0019] The battery pack assembly housing provided by this utility model is not only simple in structure and easy to process, but also has a good assembly effect and can provide a sealed working environment for the battery cell module. By symmetrically arranged frame support bars on the bottom side of the housing, it is easy to quickly screw the housing to the vehicle frame, thereby achieving a firm connection between the housing and the vehicle frame. Attached Figure Description

[0020] Fig. 1 This is a schematic diagram of the structure of a battery pack assembly housing according to the present invention;

[0021] Fig. 2 This is a first-view exploded view of the battery pack assembly housing described in this utility model;

[0022] Fig. 3 This is a second-view exploded view of the battery pack assembly housing described in this utility model;

[0023] Fig. 4 This is a cross-sectional view of the battery pack assembly housing described in this utility model;

[0024] Fig. 5 This is a cross-sectional view of the housing in the battery pack assembly housing of this utility model;

[0025] Fig. 6 This is a schematic diagram of the structure of the housing in the battery pack assembly housing of this utility model.

[0026] Illustration markings:

[0027] 1-Box body, 101-Pressure nut post, 102-Box body receiving cavity;

[0028] 2-Top cover, 201-Annular flange, 202-Screw through hole, 203-Top cover screw, 204-Top cover receiving cavity;

[0029] 3-Frame support bar, 301-Frame connection hole, 302-Cavity, 303-First cavity, 304-Locking nut mounting cavity, 305-Second cavity, 306-Firming plate, 307-Protruding strip, 308-Nut sliding groove, 309-Baffle through groove;

[0030] 4- Lock nut;

[0031] 5-Battery cell module mounting cavity;

[0032] 6 - Annular sealing ring, 601 - Sealing ring through hole;

[0033] 7-Nut baffle. Detailed Implementation

[0034] 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.

[0035] like Figs. 1-3 As shown, this solution provides a battery pack assembly housing, including a housing 1 and a top cover 2. The bottom port of the top cover 2 is provided with an annular flange 201 corresponding to the top of the housing 1. The annular flange 201 is provided with a plurality of screw through holes 202. The top cover screws 203 are screwed to the press-fit nut post 101 provided on the top of the housing 1 through the screw through holes 202, so as to realize the sealed connection between the top cover 2 and the housing 1.

[0036] The bottom of the housing 1 is symmetrically provided with frame support bars 3 with grooves 302, and a frame connection hole 301 is provided at the bottom of the frame support bar 3. A locking nut 4 is embedded in the groove 302 corresponding to the frame connection hole 301. The locking screw passes through the frame screw hole on the vehicle frame, and then through the frame connection hole 301 and screws onto the locking nut 4, so as to realize the quick connection of the battery pack assembly housing to the vehicle frame.

[0037] Both the box body 1 and the top cover 2 are square.

[0038] Both the housing 1 and the frame support bar 3 are made of aluminum, which has the advantages of corrosion resistance, easy forming, high thermal conductivity, high strength and lightweight.

[0039] In this embodiment, the top cover 2 includes a top cover receiving cavity 204, and the box body 1 includes a box body receiving cavity 102. After the top cover 2 is connected to the box body 1, a cell module mounting cavity 5 is formed.

[0040] The length and width of the top cover cavity 204 are the same as the length and width of the box cavity 102.

[0041] In this connection structure, the only difference between the top cover cavity 204 and the housing cavity 102 is their height. When the top cover 2 is connected to the housing 1, the top cover cavity 204 and the housing cavity 102 overlap to form an integrated battery cell module mounting cavity 5, which is more conducive to sealing the internal battery cell module and other components and reducing external interference. The top cover cavity 204 can also protect the top of the battery cell module and other components that protrude above the housing cavity 102.

[0042] An annular sealing ring 6 is also provided at the bottom of the annular flange 201, and the annular sealing ring 6 has a number of sealing ring through holes 601 corresponding to the number of screw through holes 202.

[0043] By adding an annular sealing ring 6, the connection between the box body 1 and the top cover 2 can be further sealed, which is more conducive to isolation from the outside.

[0044] After passing through the screw through hole 202 and the sealing ring through hole 601, the top cover screw 203 is screwed onto the press-fit nut post 101 located on the top of the housing 1, thereby achieving a sealed connection between the top cover 2 and the housing 1.

[0045] like Figs. 3-6 As shown, ribs 306 are symmetrically arranged in the cavity 302. The two ribs 306 divide the cavity 302 into a first cavity 303, a locking nut mounting cavity 304 and a second cavity 305 that are parallel to each other. The locking nut 4 is arranged in the locking nut mounting cavity 304.

[0046] In this embodiment, by setting the first cavity 303, the locking nut mounting cavity 304 and the second cavity 305 that are parallel to each other on the frame support bar 3, the frame support bar 3 can be guaranteed to have sufficient support width, while the stiffening plate 306 between adjacent cavities can achieve enhanced support and ensure the strength of the frame support bar 3.

[0047] As an optimization of this embodiment, the rib plate 306 is provided with a protrusion 307 on the side facing the locking nut mounting cavity 304, and a nut groove 308 is formed between the two protrusions 307 for the locking nut 4 to slide.

[0048] In this embodiment, a nut groove 308 is provided to facilitate the quick installation and limiting clamping of the locking nut 4. After installation, the locking nut 4 corresponds to the frame connection hole 301 located at the bottom, thereby facilitating the subsequent connection of the locking screw.

[0049] It should be noted that in this embodiment, the protruding strip 307 and the stiffening plate 306 are integrally formed.

[0050] As a further optimization of this embodiment, the bottom of the frame support bar 3 is also provided with a baffle groove 309 symmetrical about the frame connection hole 301, which allows the nut baffle 7 to be inserted. The nut baffle 7 is inserted into the locking nut mounting cavity 304 through the baffle groove 309 to achieve lateral limitation of the locking nut 4, thereby ensuring that it better corresponds to the position of the frame connection hole 301.

[0051] As a specific embodiment of this solution, each of the frame support bars 3 is provided with two frame connection holes 301, so there are a total of four frame connection holes 301 on the two frame support bars 3, which correspond to the four corners of the bottom edge of the housing 1, thereby forming a stable support when connected to the vehicle frame.

[0052] 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 assembly housing, comprising a housing (1) and a top cover (2), characterized in that, The bottom port of the top cover (2) is provided with an annular flange (201) corresponding to the top of the box body (1). The annular flange (201) is provided with a plurality of screw through holes (202). The top cover screw (203) is screwed to the press nut post (101) provided on the top of the box body (1) through the screw through holes (202). The bottom of the housing (1) is symmetrically provided with a frame support bar (3) with a cavity (302), and a frame connection hole (301) is provided at the bottom of the frame support bar (3). A locking nut (4) is embedded in the cavity (302) corresponding to the frame connection hole (301). The locking screw passes through the frame screw hole on the vehicle frame and then through the frame connection hole (301) to be screwed to the locking nut (4).

2. The battery pack assembly housing according to claim 1, characterized in that, The top cover (2) includes a top cover receiving cavity (204), and the box body (1) includes a box body receiving cavity (102). After the top cover (2) and the box body (1) are connected, a cell module mounting cavity (5) is formed. The length and width of the top cover cavity (204) are the same as the length and width of the box cavity (102).

3. The battery pack assembly housing according to claim 1, characterized in that, An annular sealing ring (6) is also provided at the bottom of the annular flange (201), and the annular sealing ring (6) has a number of sealing ring through holes (601) corresponding to the number of screw through holes (202).

4. The battery pack assembly housing according to claim 1, characterized in that, The cavity (302) is symmetrically provided with stiffening plates (306), and the two stiffening plates (306) divide the cavity (302) into a first cavity (303), a locking nut mounting cavity (304) and a second cavity (305) that are parallel to each other. The locking nut (4) is provided in the locking nut mounting cavity (304).

5. A battery pack assembly housing according to claim 4, characterized in that, The rib (306) is provided with a protrusion (307) on the side facing the locking nut mounting cavity (304), and a nut groove (308) is formed between the two protrusions (307) for the locking nut (4) to slide.

6. A battery pack assembly housing according to claim 5, characterized in that, The bottom of the frame support bar (3) is also provided with a baffle through groove (309) that allows the nut baffle (7) to be inserted, symmetrical about the frame connection hole (301).

7. A battery pack assembly housing according to claim 1, characterized in that, Each of the frame support bars (3) is provided with two frame connection holes (301).

8. A battery pack assembly housing according to claim 1, characterized in that, Both the box body (1) and the top cover (2) are square.

9. A battery pack assembly housing according to claim 1, characterized in that, Both the housing (1) and the frame support bar (3) are made of aluminum.

Images