CN206907871U - Lightweight battery lodge body - Google Patents

Abstract

The utility model is a kind of lightweight battery lodge body, including bottom plate, side wall and upper lid, wherein, the bottom of bottom plate and side wall is welded to connect, and upper lid is connected with the top bolt of side wall；Position on bottom plate in side wall is provided with module fixing bolt and is stamped with bottom plate reinforcement, and the position on bottom plate outside side wall is stamped with Edge Enhancement muscle around the circle of side wall one, and hanger is provided with the edges of boards of bottom plate opposite sides；Plug-in unit mounting hole is offered in side wall；Sealing gasket is provided between upper lid and side wall, lid reinforcement is stamped with upper lid.The utility model lightweight battery lodge body design science is reasonable, structure is novel, cost is low, in light weight, hardness is high, moulding process is simple, greatly improves battery pack system energy density, is worth of widely use.

Description

Lightweight battery pack box

technical field

The utility model relates to the technical field of lithium-ion battery systems, in particular to a lightweight battery pack box.

Background technique

As a protective part of the battery system, the battery pack box needs to have sufficient strength to meet the national standard vibration test requirements. At present, the battery pack box commonly used in the industry has a sheet metal box, which is formed by deep drawing or bending. The material is high High-strength steel, and cast aluminum boxes, etc., have unreasonable structural design, complex components, high manufacturing costs, difficult forming processes, heavy weight, and low energy density of the battery system in groups. With the development of the electric vehicle industry, the national subsidy policy is related to the energy density of the battery pack system, and customers have higher and higher requirements for the energy density of the battery pack system. Therefore, first of all, the structural design of the battery pack box should be more scientific and rational to increase the energy density of the battery cell; secondly, it is also very important to reduce the weight of the box.

Contents of the invention

The purpose of the utility model is to provide a light-weight battery pack case in order to solve the above-mentioned problems in the prior art.

The utility model is achieved through the following technical solutions:

A lightweight battery pack box body, including a bottom plate, a side wall and an upper cover, wherein the bottom plate is welded to the bottom of the side wall, and the upper cover is connected to the top of the side wall with bolts; Set of fixing bolts and stamping bottom plate reinforcement ribs, edge reinforcement ribs are punched around the side wall on the bottom plate outside the side wall, and lifting lugs are provided at the edges of the opposite sides of the bottom plate; plug-ins are provided on the side walls Mounting holes; a gasket is provided between the upper cover and the side wall, and upper cover reinforcement ribs are stamped on the upper cover.

As a preferred technical solution, the side wall includes a main wall, a connecting surface and a sealing surface, the connecting surface is located at the bottom of the main wall and is perpendicular to the main wall, and the sealing surface is located at the top of the main wall and is perpendicular to the main wall , the connection surface and the sealing surface are respectively placed on both sides of the main wall, the connection surface is welded to the bottom plate, and the sealing surface is connected to the upper cover with bolts.

As a preferred technical solution, a sealing edge is provided on the periphery of the upper cover, and a connecting hole is opened on the sealing edge, and a blind rivet nut is installed on the sealing surface of the side wall, and the sealing edge of the upper cover is connected to the sealing surface of the side wall. The spaces are connected by blind rivet nuts, and the gasket is arranged between the sealing surface and the sealing edge.

As a preferred technical solution, several hollow cores arranged at intervals are provided inside the side wall.

As a preferred technical solution, the bottom plate, side walls and upper cover are made of aluminum alloy.

The light weight battery pack box of the utility model has scientific and reasonable design, novel structure, low cost, light weight, high hardness, simple molding process, greatly improves the energy density of the battery pack system, and is worthy of popularization and use.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the upper cover in the utility model.

Fig. 3 is a schematic diagram of the structure of the mid-sole plate and the side wall of the utility model.

Fig. 4 is a structural schematic diagram of the mid-sole plate of the present invention.

Fig. 5 is a schematic diagram of the structure of the side wall in the present invention.

Fig. 6 is a schematic cross-sectional view of the side wall of the present invention.

In the figure: 1-bottom plate, 2-side wall, 2-1-main wall, 2-2-connecting surface, 2-3-sealing surface, 2-4-hollow core, 3-top cover, 3-1 -Sealing edge, 3-2-connection hole, 4-module fixing bolt, 5-bottom plate reinforcement rib, 6-edge reinforcement rib, 7-hanging lug, 8-plug-in installation hole, 9-sealing gasket, 10-top cover Reinforcing ribs, 11-blind rivet nuts.

detailed description

In order to enable those skilled in the art to better understand the utility model, the utility model will be further clearly and completely described below in conjunction with reference to the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

As shown in Figures 1 to 6, a lightweight battery pack box includes a bottom plate 1, a side wall 2 and an upper cover 3, wherein the bottom plate 1 is welded to the bottom of the side wall 2, and the upper cover 3 is connected to the side wall 2 The top bolt connection;

Bottom plate 1 is made of aluminum alloy and is made by deep drawing process. Module fixing bolts 4 are installed on the part of bottom plate 1 inside the enclosure of side wall 2 and bottom plate reinforcement ribs 5 are stamped. Bottom plate 1 is located on side wall 2. Edge ribs 6 are punched around the side wall 2 outside the fence, and the bottom plate ribs 5 and edge ribs 6 are connected to each other, so that the overall structure has mutual reinforcement in the X, Y, and Z directions, thereby preventing The battery pack is broken or deformed during the vibration process, and lifting lugs 7 are punched and formed on the opposite sides of the bottom plate 1;

The side wall 2 is made of aluminum alloy and made by extrusion molding process; the side wall 2 includes the main wall body 2-1, the connecting surface 2-2 and the sealing surface 2-3, and the connecting surface 2-2 is located on the main wall body 2 The bottom of -1 is set vertically with the main wall 2-1, the sealing surface 2-3 is located at the top of the main wall 2-1 and is vertically set with the main wall 2-1, the connecting surface 2-2 and the sealing surface 2- 3 points are placed on both sides of the main wall body 2-1; the main wall body 2-1 of the side wall 2 is provided with a plug-in installation hole 8; between the side wall 2 and the side wall 2 is argon arc welding or CMT cold welding process Welding connection, welding deformation is small, between the side wall 2 and the bottom plate 1 is welded and connected with the bottom plate 1 through the connection surface 2-2 by friction stir welding process, and the welding strength is high; between the side wall 2 and the upper cover 3 is through the sealing surface 2-3 and the upper cover 3 are connected by bolts of rivet nuts 11; based on light weight considerations, the interior of the side wall 2 as a whole is provided with several hollow parts 2-4 arranged at intervals.

The upper cover 3 is made of aluminum alloy and is made by deep-drawing forming process. The periphery of the upper cover 3 is provided with a sealing edge 3-1, and the sealing edge 3-1 is provided with a connecting hole 3-2, and the side wall 2 A blind rivet nut 11 is installed on the sealing surface 2-3 of the upper cover 3, and the sealing edge 3-1 of the upper cover 3 is connected with the sealing surface 2-3 of the side wall 2 by bolts of the blind rivet nut 11, and the sealing edge 3 of the upper cover 3 -1 and the sealing surface 2-3 of the side wall 2 are also provided with a sealing gasket 9, and the upper cover 3 is punched with upper cover reinforcement ribs 10 to prevent deformation.

The basic principles and main features of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (6)

1. A lightweight battery pack box, characterized in that it includes a bottom plate (1), a side wall (2) and an upper cover (3), wherein the bottom plate (1) is welded to the bottom of the side wall (2), The upper cover (3) is connected with the top bolts of the side wall (2); the part of the bottom plate (1) located inside the side wall (2) is installed with module fixing bolts (4) and stamped with bottom plate reinforcement ribs (5), and the bottom plate (1) The part located outside the side wall (2) is stamped with edge ribs (6) around the side wall (2), and there are lifting lugs (7) on the opposite sides of the bottom plate (1) ; The side wall (2) is provided with a plug-in installation hole (8); a gasket (9) is provided between the upper cover (3) and the side wall (2), and the upper cover (3) is stamped with upper cover reinforcing ribs ( 10). 2. The lightweight battery pack box according to claim 1, characterized in that: the side wall (2) includes a main wall (2-1), a connecting surface (2-2) and a sealing surface (2-3) , the connection surface (2-2) is located at the bottom of the main wall (2-1) and is perpendicular to the main wall (2-1), and the sealing surface (2-3) is located at the top of the main wall (2-1) And it is perpendicular to the main wall (2-1), the connecting surface (2-2) and the sealing surface (2-3) are placed on both sides of the main wall (2-1), and the connecting surface (2-2) and The bottom plate (1) is welded, and the sealing surface (2-3) is bolted to the upper cover (3). 3. The light-weight battery pack box according to claim 2, characterized in that: a sealing edge (3-1) is provided on the periphery of the upper cover (3), and a sealing edge (3-1) is provided on the sealing edge (3-1). The connection hole (3-2), the blind rivet nut (11) is installed on the sealing surface (2-3) of the side wall (2), the sealing edge (3-1) of the upper cover (3) and the side wall (2) The sealing surfaces (2-3) are connected by blind rivet nuts (11), and the sealing gasket (9) is arranged between the sealing surface (2-3) and the sealing edge (3-1). 4. The light-weight battery pack box according to any one of claims 1-3, characterized in that: the interior of the side wall (2) is provided with several hollow cores (2-4) arranged at intervals. 5. The lightweight battery pack box according to any one of claims 1-3, characterized in that the bottom plate (1), side walls (2) and upper cover (3) are made of aluminum alloy. 6. The lightweight battery pack box according to claim 4, characterized in that: the bottom plate (1), side walls (2) and upper cover (3) are made of aluminum alloy.