CN212277325U

CN212277325U - Module mounting structure and power battery package

Info

Publication number: CN212277325U
Application number: CN202021222023.4U
Authority: CN
Inventors: 马赛; 刘建华; 单小林; 瓮百川; 郑慧苗
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-01
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a module mounting structure and power battery package, module mounting structure is arranged in the power battery package fixed mounting between battery module and the casing bottom crossbeam, and its characterized in that includes a horizontal faying surface at overlap joint crossbeam width direction both ends, the both ends of horizontal faying surface perpendicular downwardly extending respectively forms two vertical faces parallel with the crossbeam side to the crossbeam base, the bottom of two vertical faces extends the formation mount table to the outside level respectively, be provided with battery module mounting hole on the mount table. The utility model discloses a mode of cold joint has replaced current welded connection mode, has avoided little aluminium pig welding process difficulty and welding precision not high, down the housing beam because of the welding produces the problem of deformation easily, has reduced the input of welding jig frock, convenient assembling, and the installation intensity is reliable.

Description

Module mounting structure and power battery package

Technical Field

The utility model belongs to the technical field of power battery wraps, a mounting structure of battery module is related to.

Background

With the national vigorous popularization of new energy fields, electric vehicles have become the mainstream trend in the future. The key of the design of the electric automobile is a three-electricity technology, which comprises a battery, a motor and an electric controller, wherein the power battery is used as a power supply component which is the most core of the whole automobile, and determines key indexes of the whole automobile, such as driving range, cost, service life, safety and the like. The architecture design of the power battery system product mainly aims at analyzing and decomposing the whole system into subsystems, generating parts and components in the subsystems and clarifying the interface relationship between each subsystem and each component. The overall design of the power battery pack mainly comprises module design, structural part design, electronic and electrical design, thermal management design, BMS design and the like.

The power battery pack comprises a shell, a module, a BMS (battery management system), an electric part and a heat management part, wherein the design scheme of the lower shell is particularly important, all parts in the battery pack are mounted on the lower shell for fixing, and therefore, the problems of the assembly property, the manufacturing process property and the cost of the battery pack are required to be comprehensively considered during the structural design of the lower shell.

At present, the power battery pack module is mounted and fixed in a manner that a module mounting block 6 is welded at a position where the battery module is mounted at the bottom of the lower housing beam 4, as shown in fig. 1. Because the module installation piece is an independent little aluminium pig, need fix the module installation piece on the crossbeam through the welding mode. When welding the module mounting block, there are several disadvantages:

1. because the aluminum block is small, welding is difficult, more tool fixtures are needed for limiting, and the position precision after welding is poor;

2. when a module mounting block is welded, in order to ensure the fixed strength of an aluminum block, CMT welding needs to be carried out on the periphery of the aluminum block, and as more welding is carried out in such a small area, the welding deformation of a cross beam is easy to influence the size precision;

3. because the aluminium pig is less, inconvenient use machine welding can only adopt manual welding, utilizes man-sea tactics not the puzzlement of wisdom when the volume production, causes the cost of labor higher, and production efficiency is low, and manual welding precision is relatively poor.

Disclosure of Invention

The utility model aims at providing a modified module mounting structure avoids adopting the welding mode to install a series of problems of bringing among the prior art, satisfies the module installation needs.

In order to achieve the purpose of the invention, the utility model adopts the following technical scheme:

the utility model provides an at first, module mounting structure for fixed mounting between battery module and the casing bottom crossbeam in the power battery package, its characterized in that includes: realize that crossbeam direction of height installs spacing horizontal faying surface, connect and be in horizontal faying surface both ends are realized two vertical faces of crossbeam width direction installation spacing and are connected the mount table that is provided with the battery module mounting hole of two vertical face bottoms.

Preferably, the horizontal lapping surfaces lap both ends of the width direction of the beam, both ends of the horizontal lapping surfaces respectively extend to the beam base vertically and downwards to form the two vertical surfaces, and the bottom ends of the two vertical surfaces respectively extend to the outside horizontally to form the mounting table.

Preferably, the two vertical surfaces and the two side surfaces of the cross beam are respectively and tightly attached.

Preferably, structures for mutually fastening and connecting are correspondingly arranged on the two vertical surfaces and the two side surfaces of the cross beam.

The utility model also provides a power battery package, its characterized in that includes aforementioned module mounting structure.

The utility model discloses a improve module mounting structure, make its mode that can adopt cold to connect fixed with the crossbeam, replaced current welded connection mode, can avoid little aluminium pig welding process difficulty and welding precision not high, down the casing crossbeam because of the easy problem that produces the deformation of welding, reduce the input of welding jig frock, convenient assembling, installation intensity is reliable.

Drawings

Fig. 1 is a schematic view illustrating an installation of a conventional battery module;

FIG. 2 is a schematic view of the module mounting structure of the present invention;

FIG. 3 is an assembly view of the module mounting structure of the present invention;

fig. 4 is a schematic view of the module mounting structure of the present invention after assembly;

fig. 5 is a schematic assembly diagram of a power battery pack.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.

Example one

As shown in fig. 2 and 3, a concave part 4-1 is usually provided in the middle of the cross beam 4 at the bottom of the power battery pack housing, and this concave part is to provide a space for arranging the wiring harness, water cooling pipes and the like of the power battery packs on both sides. The present embodiment improves the module mounting structure based on this recessed structure. The module mounting structure after improvement includes the horizontal faying surface 1 at overlap joint crossbeam width direction both ends, and the both ends of horizontal faying surface 1 (along crossbeam width direction) perpendicular downwardly extending forms two vertical faces 2 to crossbeam base 4-2 respectively, and two vertical faces 2 are located crossbeam 4 both sides respectively, are parallel with the crossbeam side. The bottom ends of the two vertical surfaces 2 respectively extend outwards horizontally to form a battery module mounting table 3. The horizontal faying surface 1, the two vertical surfaces 2 and the mounting table 3 are preferably of integral construction. The module is in a convex shape when viewed from the side.

Two vertical surfaces 2 and two side surfaces of the cross beam 4 are respectively and tightly attached, and rivets or threaded mounting holes 2-1 are correspondingly arranged on the two vertical surfaces so as to realize the fastening connection of the vertical surfaces and the side surfaces of the cross beam and increase the mounting strength. The position and the number of the mounting holes can be adjusted adaptively according to the requirement of mounting strength. The mounting table 3 is provided with a battery module mounting hole 3-1, and the size and the hole position of the mounting table are determined by the mounting position of the battery module. In the present embodiment, the vertical surface 2 presents a transition structure that is narrow at the top and wide at the bottom in order to match the beam recess size and the mount size. The module mounting structure after the improvement is semi-closed tubular structure, and horizontal faying surface 1 realizes that the installation of crossbeam direction of height is spacing, and two vertical faces 2 realize that the installation of crossbeam width direction is spacing to cold connected mode replaces the welding mode assembly in the middle of the crossbeam depressed part position, realizes that the installation of battery module is fixed.

The assembly schematic diagram of the module mounting structure is shown in fig. 3, the module mounting structure is assembled on the concave part of the cross beam from top to bottom, and the matching of the mounting positions is realized by utilizing the structural design of the horizontal lapping surface and the limiting of the vertical surfaces at two sides. Then, the two sides are fastened by rivets or screws 5. The assembled module mounting structure is schematically shown in fig. 4. Utilize the utility model discloses a module mounting structure assembly power battery package is shown in figure 5.

Example two

Besides the connection modes of rivets, screws and the like mentioned in the first embodiment, the side surfaces of the two vertical surfaces 2 and the two side surfaces of the cross beam 4 can be correspondingly provided with buckle connection structures, and the connection can be carried out in a clamping mode. Snap connections are common cold connections and it is within the ability of one skilled in the art to design a specific connection configuration as required by the strength of the installation.

Claims

1. The utility model provides a module mounting structure for fixed mounting between battery module and the casing bottom crossbeam in the power battery package, its characterized in that includes: realize a horizontal faying surface (1) of crossbeam direction of height installation spacing, connect and be in horizontal faying surface (1) both ends realize two vertical faces (2) of crossbeam width direction installation spacing and connect be provided with mount table (3) of battery module mounting hole (3-1) in two vertical faces (2) bottoms.

2. The module installation structure according to claim 1, wherein the horizontal overlapping surfaces (1) overlap both ends in the width direction of the cross beam, both ends of the horizontal overlapping surfaces (1) extend vertically downward to the cross beam bases (4-2) respectively to form the two vertical surfaces (2), and bottom ends of the two vertical surfaces (2) extend horizontally outward to form the installation table (3) respectively.

3. The module installation structure according to claim 1, wherein the two vertical surfaces (2) and the two side surfaces of the cross member are respectively fitted closely.

4. A mounting structure for a module according to claim 1, characterized in that said two vertical surfaces (2) and said two sides of the beam are provided with corresponding structures for fastening connection to each other.

5. The module mounting structure according to claim 4, wherein rivet or screw mounting holes (2-1) are provided on both sides of the vertical surface (2) and the cross member, respectively.

6. The module mounting structure according to claim 4, wherein the two vertical surfaces (2) and the two lateral surfaces of the cross member are provided with snap connection structures, respectively.

7. The module installation structure according to claim 1 or 2, wherein the horizontal faying surface (1), the two vertical surfaces (2) and the installation base (3) are of an integral structure.

8. A power battery pack characterized by comprising the module mounting structure according to any one of claims 1 to 6.