CN219321519U

CN219321519U - Power battery back frame and housing assembly

Info

Publication number: CN219321519U
Application number: CN202223534700.8U
Authority: CN
Inventors: 王连军; 于海圣; 刘勇; 于海; 张洁; 赵前
Original assignee: Qingdao Zhongyi Auto Parts Co ltd
Current assignee: Qingdao Zhongyi Auto Parts Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-07-07
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a power battery back frame and an outer cover assembly, which belong to the technical field of power battery frames. The power battery frame assembly materials are assembled together in a mode of welding, riveting and bolt fastening by adopting steel plate stamping parts, the frame provides 8 mounting spaces of 35-degree water-cooled batteries and a fan heater, and the bottoms of the two ends of the power battery frame are respectively provided with an outer cover supporting plate for mounting and fixing the outer cover assembly; the dustcoat assembly comprises frame, covering and 2 rolling slats door, and the frame material adopts aluminum alloy square pipe, and the covering adopts the aluminium alloy plate, and rolling slats door fastens at dustcoat frame both ends, and the covering split is 13, uses the bolt fastening between covering and the frame, convenient dismantlement. The power battery frame and the outer cover assembly are fixedly connected by 4 connecting plates through bolts.

Description

Power battery back frame and housing assembly

Technical Field

The utility model relates to the technical field of battery assembly, in particular to a power battery back frame and an outer cover assembly.

Background

At present, the electric automobile has the advantages of energy conservation and emission reduction, environmental protection, small influence on the environment, good driving experience and money saving, and has widely entered people's life, in particular to passenger cars. The commercial vehicle still belongs to the starting stage, and the electric automobile is generally provided with the battery frame that is used for installing the group battery, and present battery frame simple structure mainly welds with square steel pipe, has heavy weight, and welding deformation is serious, and intensity and rigidity are lower, and the durability is poor, and the condition of welding fracture appears easily in the use, and the security is poor. In view of this, it is important to design and manufacture a battery frame that is safe, reliable, lightweight, and modularly assembled.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a power battery back frame and an outer cover assembly, wherein the power battery back frame adopts an automobile girder plate sheet metal structure, has the advantages of light weight, high structural strength, good structural stability, strong bearing capacity and the like, is not easy to fail, is safe and reliable, and is convenient for installing a battery. The outer cover assembly frame is formed by welding aluminum alloy square tubes, aluminum alloy skins are fixed on the surfaces of the outer cover assembly frame through bolts, aluminum alloy fire truck rolling doors are respectively arranged on two sides of the outer cover assembly frame, and the outer cover assembly frame is characterized by being light in weight, convenient to detach and repair a battery, and modular assembly can be achieved between the power battery back frame and the outer cover.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides a power battery back frame and dustcoat assembly which characterized in that: the power battery back frame assembly is connected and fixed with the outer cover assembly through a connecting plate.

As a preferable scheme of the utility model, the power battery back frame comprises a left auxiliary beam, a right auxiliary beam, vertical beams, hanging rings and inclined struts, wherein the left auxiliary beam and the right auxiliary beam are positioned at the bottom of the frame and are used for being connected with an automobile girder to fix the whole power battery back frame, the vertical beams are perpendicular to the left auxiliary beam and the right auxiliary beam and welded on the left auxiliary beam and the right auxiliary beam, reinforcing brackets are welded at the bottoms of the outer sides of the vertical beams and are used for increasing the strength of the vertical columns, the inclined struts are welded between the two vertical beams at each side and are used for increasing the strength of the vertical beams, and the hanging rings are welded and fixed on the left auxiliary beam and the right auxiliary beam and are used for lifting during assembly.

As a preferable scheme of the utility model, a left auxiliary beam and a right auxiliary beam are welded at the bottom of the power battery back frame assembly, a plurality of hanging rings are fixed at the tops of the left auxiliary beam and the right auxiliary beam, a plurality of vertical beams are welded at the tops of the left auxiliary beam and the right auxiliary beam close to the hanging rings, and the vertical Liang Hengjie is U-shaped.

As a preferable scheme of the utility model, the U-shaped bottom of the vertical beam, which is close to the top end, is fixedly provided with a radiator support assembly and a plurality of battery lower beams sequentially through bolts, the battery lower beams are fixed with the vertical beam through a plurality of wire harness supports, the wire harness supports are fixed on the outer sides of the battery lower beams and used for fixing wires and pipelines, the left and right support assemblies are fixed at the two ends of the battery lower beams, and the left and right support assemblies are riveted.

As a preferred embodiment of the present utility model, the back frame of the power battery is formed by adopting an automobile girder plate metal plate, different thicknesses are selected according to requirements, so that the weight is reduced while the strength is ensured, and the light-weight design is realized.

As a preferable scheme of the utility model, the outer cover assembly frame is formed by welding aluminum alloy square tubes, and holes are formed in the square tubes and used for fixing flat head hexagonal rivet nuts.

As a preferable scheme of the utility model, the welding assembly of the outer cover frame also comprises fire truck rolling doors at two sides, and the welding assembly of the outer cover frame is fixed on the welding assembly of the outer cover frame by self-tapping screws and is used for overhauling and maintaining battery insurance and circuits.

As a preferable scheme of the utility model, the outer cover assembly comprises an outer cover frame welding assembly, a cover and a top cover, wherein the cover is provided with 12 pieces, the top cover is positioned at the top of the outer cover assembly, the cover is provided with a heat dissipation hole for heat dissipation of a battery, and the cover and the top cover are fixed on the outer cover frame welding assembly through bolts.

In a preferred embodiment of the present utility model, the cover frame welding assembly further includes a plurality of connection plates, and the connection plates are bolted to the cover frame welding assembly for fixing the cover to the power cell frame.

As a preferable scheme of the utility model, 2 lifting lugs are fixed at two corners above the outer cover frame welding assembly, a connecting plate is fixed on one surface of the outer cover frame welding assembly facing the power battery back frame assembly, and 4 connecting plates are arranged and used for connecting and fixing the outer cover frame welding assembly and the power battery back frame assembly.

As a preferable scheme of the utility model, the welding assembly of the outer cover frame and the skin are made of aluminum alloy materials, the two vertical beams are fixedly connected through the battery lower longitudinal beam, and crossed diagonal braces are welded between the two vertical beams.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a power battery back frame and an outer cover assembly, wherein the power battery back frame adopts an automobile girder plate metal plate structure, and steel plates with different thicknesses are selected according to requirements. The outer cover assembly frame is formed by welding aluminum alloy square tubes, aluminum alloy skins are fixed on the surfaces of the outer cover assembly frame through bolts, aluminum alloy fire truck rolling doors are respectively arranged on two sides of the outer cover assembly frame, light-weight design is achieved, a maintenance battery is convenient to detach, and the power battery back frame and the outer cover are assembled together after being assembled respectively, so that modular assembly can be achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a power battery back frame structure of a power battery back frame and housing assembly according to the present utility model.

Fig. 2 is a back frame welding assembly of a power cell back frame and housing assembly according to the present utility model.

Fig. 3 is a schematic view of a housing assembly structure of a power battery back frame and housing assembly according to the present utility model.

Fig. 4 is a schematic structural view of a welding assembly for a back frame and a cover frame of a power battery assembly according to the present utility model.

In the figure: 1-a power cell back frame assembly; 2-left and right auxiliary beams; 3-erecting beams; 4-left and right brackets; 5-a battery lower beam; 6-a radiator support assembly; 7-an outer cover supporting plate; 8-wire harness brackets; 9-hanging rings; 10-a housing assembly; 11-an outer cover frame welding assembly; 12-covering; 13-connecting plates; 14-top cover; 15-lifting lugs; 16-a fire truck roller shutter door; 17-battery side sills; 18-diagonal bracing; 19-back frame welding assembly.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.

Examples: referring to fig. 1, fig. 2 and fig. 3 in combination, an embodiment of the utility model provides a power battery back frame and housing assembly for a purely electric commercial vehicle. The power battery back frame assembly 1 in the power battery back frame assembly can meet the requirements of strength and rigidity, is not easy to deform, is safe and reliable, is convenient to install the battery, and can realize light-weight design and modularized assembly.

A power battery back frame and outer cover assembly comprises a power battery back frame assembly 1 and an outer cover assembly 10. The power battery back frame assembly 1 is fixed on a car girder behind a car cab through the left and right auxiliary girders 2, the battery is fixed in the power battery back frame assembly 1, the power battery back frame assembly 1 is used for fixing and protecting the battery, and the situation that the battery is extruded and deformed, broken and spontaneous combustion or even explosion is caused under the emergency conditions such as collision or overturning is effectively prevented, and the safety is improved.

In this embodiment, the power battery back frame assembly 1 includes a back frame welding assembly 19, a battery side sill 17, left and right brackets 4, a battery lower cross member 5, and a radiator support assembly 6. The battery side sills 17 are used for connecting the front and rear vertical beams and playing a main role in supporting the battery, 2 battery side sills 17 are installed on each layer, and 6 battery side sills 17 are required for the upper 3 layers.

The battery lower cross beam 5 is arranged above the battery lower longitudinal beam 17, the inner side of the vertical beam 3 can support the battery to provide an installation plane for the battery, 1 battery lower cross beam 5 is needed for each layer, and 8 battery lower cross beams 5 are needed for the layers in total.

The left bracket and the right bracket 4 adopt a riveting process, a plurality of parts are riveted into a door frame shape, after the battery is assembled, the left bracket and the right bracket are fixed at the two ends of the 8 battery lower cross beams 5 by bolts, and the structure is convenient for installing the battery.

In this embodiment, the back frame welding assembly 19 is a main bearing part of the back frame of the power battery, and adopts a sheet metal part welding structure. The bottom is 2 left and right auxiliary beams 2,4 vertical beams 3 which are used for being arranged on an automobile girder are vertically welded on the left and right auxiliary beams 2, the bottom of each vertical beam 3 is welded with a reinforcing support, and the two front and rear side 2 vertical beams 3 are respectively connected and fixed by diagonal braces 18 which are welded and crossed.

In this embodiment, the material of the housing assembly 10 is aluminum alloy, which has the advantages of light weight and high strength. The weight of the product assembly is greatly reduced, the light-weight design is realized, and the modular assembly between the power battery back frame 1 and the outer cover assembly 10 can be realized.

The housing assembly 10 includes a housing frame welding assembly 11, a skin 12, a web 13, a top cover 14, lifting lugs 15, and a fire truck roll door 16. The outer cover frame welding assembly 11 is a square frame formed by welding aluminum alloy square tubes, and has high strength and light weight.

The covering 12 is formed by punching an aluminum alloy sheet, radiating holes are punched on the covering, the inside of the frame can be guaranteed to radiate well, the covering 12 is split into 12 pieces, 6 pieces are respectively arranged in front and back, and the covering is fixed on the welding assembly 11 of the outer cover frame by bolts through flat head hexagonal rivet nuts fastened on aluminum alloy square tubes, so that the covering is convenient to detach. The reinforcing ribs welded on the outer cover frame welding assembly 11 are arranged behind the skin, so that the skin can be prevented from vibrating and rattling during the running process of the automobile.

In this embodiment, a top cover 14 is bolted to the top of the cover frame welding assembly 11, and a radiator vent is formed in the top cover 14. The outer side above the outer cover frame welding assembly 11 is fixed with 4 lifting lugs 15 by bolts for lifting the outer cover assembly 10. The left and right sides of the housing frame welding assembly 11 are each secured with a tapping screw to a fire truck roll door 16 for servicing the battery compartment. The anti-roll door 16 has high strength, high toughness, impact resistance and more effective safety protection.

In this embodiment, after the power battery back frame 1 completes the assembly of the battery and the circuit, the housing assembly 10 is lifted by 4 lifting lugs 15 and falls on the housing supporting plate 7 of the power battery back frame 1, and the power battery back frame assembly 1 and the housing assembly 10 are fixed by bolting through 4 connecting plates 13. And after the assembly is completed, the power battery back frame and the outer cover assembly are lifted by 4 lifting rings 9 and are arranged on a girder at the rear of an automobile cab.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a power battery back frame and dustcoat assembly which characterized in that: including a power battery back frame assembly (1) and dustcoat assembly (10), dustcoat assembly (10) bottom border falls on dustcoat baffle (7), be connected fixedly through connecting plate (13) between power battery back frame assembly (1) and dustcoat assembly (10), auxiliary girder (2) about power battery back frame assembly (1) bottom welding has, auxiliary girder (2) top is fixed with a plurality of rings (9) about, auxiliary girder (2) top is close to rings (9) department welding and has a plurality of vertical girders (3) about, vertical girders (3) transversal U-shaped of personally submitting.

2. The power cell back frame and housing assembly of claim 1, wherein: the U-shaped bottom that is close to the top of standing beam (3) loops through bolt fastening has radiator support assembly (6) and battery underbeam (5), still fix through many pencil support (8) between battery underbeam (5) and the standing beam (3), support assembly (4) about battery underbeam (5) both ends are fixed, and support assembly (4) are the rivet.

3. The power cell back frame and housing assembly of claim 2, wherein: the outer cover assembly (10) comprises an outer cover frame welding assembly (11), a skin (12), a top cover (14), a connecting plate (13), lifting lugs (15) and a fire truck rolling door (16), wherein 12 pieces of the skin (12) are arranged, the top cover (14) is located at the top of the outer cover assembly (10), and radiating holes are formed in the skin (12).

4. A power cell back frame and housing assembly as defined in claim 3, wherein: fire engine rolling doors (16) are fixed to two sides of the outer cover frame welding assembly (11), 2 lifting lugs (15) are fixed to two corners above the outer cover frame welding assembly (11), a connecting plate (13) is fixed to one face of the outer cover frame welding assembly (11) facing the power battery back frame assembly (1), and 4 connecting plates (13) are arranged and used for connecting and fixing the outer cover frame welding assembly (11) and the power battery back frame assembly (1).

5. The power cell back frame and housing assembly of claim 4, wherein: the outer cover frame welding assembly (11) and the skin (12) are made of aluminum alloy materials.

6. The power cell back frame and housing assembly of claim 5, wherein: the two vertical beams (3) are fixedly connected through a battery side sill (17), and crossed diagonal braces (18) are welded between the two vertical beams (3).