CN212604456U

CN212604456U - Power battery pack frame structure

Info

Publication number: CN212604456U
Application number: CN202021236266.3U
Authority: CN
Inventors: 雷宇涵; 陈小平; 任飞扬
Original assignee: Chongqing Changan New Energy Automobile Technology Co Ltd
Current assignee: Deep Blue Automotive Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-02-26
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to a power battery package frame construction, including being rectangular bottom plate, correspond the first module installation frame of being connected with a long limit on the bottom plate, correspond the second module installation frame of being connected with another long limit and two minor faces on the bottom plate, characterized by: the detachable frame is formed by connecting a longitudinal strip and a plurality of transverse strips and is in a fishbone shape; the detachable frame is connected to the lower surface of the base plate through bolts. The utility model discloses can effectually reduce the emergence of battery package support end accident, promote the security of vehicle and user's experience and feel to reduce the emergence of after-sale cost.

Description

Power battery pack frame structure

Technical Field

The utility model relates to an electric automobile driving system, concretely relates to power battery package frame construction.

Background

With the development and popularization of electric automobiles, more and more electric automobiles come out. Meanwhile, more and more problems emerge due to the increase of the use mileage of the user. The higher the requirement on the cruising mileage of the pure electric vehicle, the larger and larger the size of the battery pack is, and the battery pack of the pure electric vehicle can only be arranged below the floor of the vehicle body. Due to the limitation of space position, the bottom of the battery pack is always positioned at the lowest point of the whole vehicle or is almost different from the lowest point. Such an arrangement generally presents a number of problems, the most serious of which is the bottom of the battery pack. The method adopted by the industry for preventing the bottom of the battery pack from being supported is generally to increase the ground clearance of the battery pack or add an anti-collision structure on a part in front of the battery. The ground clearance of the battery pack is increased, the occurrence of bottom supporting accidents can be effectively reduced, but due to the molding limitation and the preference of customers, the ground clearance of all the battery packs can not reach the satisfactory height, so the occurrence of the bottom supporting accidents can be only limited to be solved by the measures. The anti-collision structure is added in front of the battery pack, and the contribution to bottom supporting accident reduction is very little. The scene of the occurrence of the bottom supporting accident of the battery pack is complex and changeable, and particularly in a hollow up-and-down road section, the positions of the bottom of the battery pack, where the bottom supporting will occur, cannot be effectively predicted.

CN 210092158U discloses "a power battery package backplate structure and vehicle with the same", the power battery package backplate structure includes: and (7) a bottom guard plate. The bottom guard plate is made of a composite material, and comprises: the protective device comprises a bottom guard plate body and a protective flanging, wherein a plurality of reinforcing pits are formed in the bottom guard plate body; the protective flanging is formed on the peripheral edge of the bottom protection plate body and arranged around the bottom protection plate body; the buffer structure is attached to the upper surface of the bottom protection plate body. The novel vehicle anti-floating anti-. The technical solution disclosed in this patent document is a useful attempt in the technical field.

Disclosure of Invention

The utility model aims at providing a power battery package frame construction, it can effectual reduction battery package hold in the palm the emergence of end accident, promotes the security of vehicle and user's experience and feels to reduce the emergence of after-sale cost.

A power battery package frame construction, including being rectangular bottom plate, correspond the first module installation frame of being connected with a long limit on the bottom plate, correspond the second module installation frame of being connected with another long limit and two minor faces on the bottom plate, characterized by:

the detachable frame is formed by connecting a longitudinal strip and a plurality of transverse strips and is in a fishbone shape; the detachable frame is connected to the lower surface of the base plate through bolts.

Furthermore, a plurality of first mounting nuts are arranged on the first module mounting frame, and a first lapping structure is arranged on the inner side edge of the first module mounting frame;

a plurality of second mounting nuts are arranged on the second module mounting frame, and a second lapping structure is arranged on the inner side edge of the second module mounting frame;

one long edge of the bottom plate is fixedly connected with a first lap joint structure at the inner side edge of the first module mounting frame; and the other long edge and the two short edges of the bottom plate are fixedly connected with a second lap joint structure at the inner side edge of the second module mounting frame respectively.

Furthermore, a plurality of connecting nuts are arranged below the bottom plate; a plurality of mounting holes are formed in the longitudinal strips and the transverse strips of the detachable frame; the plurality of mounting holes in the detachable frame correspond to the plurality of connecting nuts on the bottom plate one by one respectively and are fixedly connected through bolts.

Further, the lowest surface of the detachable frame is slightly lower than the frame bottom surface of the first module mounting frame.

The utility model has the advantages that: due to the fact that the detachable frame is arranged, on one hand, the structural strength of the battery pack is improved, on the other hand, the bottom plate of the large plane is divided into a plurality of small planes, and the detachable frame is lower than the small planes, so that the probability of occurrence of bottom supporting accidents is concentrated on the detachable frame; and because the detachable frame is connected with the bottom plate through the bolt, the detachable frame is convenient to detach, so that the maintainability after the bottom supporting accident occurs is improved, and the maintenance cost is reduced.

Drawings

Fig. 1 is a schematic exploded view of the present invention;

fig. 2 is a schematic view of a first module mounting frame, a second module mounting frame and a base plate;

FIG. 3 is a bottom view of the detachable frame coupled to the base plate;

FIG. 4 is a schematic view of the first module mounting frame in a lowermost position with the base plate and the removable frame;

FIG. 5 is a schematic view of the connection of the base plate to the removable frame.

In the figure:

1-a first module installation frame, 11-a first lap joint structure, 12-a first installation nut, 13-a frame bottom surface;

2-a second module mounting frame, 21-a second lapping structure, 22-a second mounting nut;

3-bottom plate, 31-connecting nut, 32-lower surface;

4-detachable frame, 41-mounting hole, 42-lowest surface;

5-bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. It should be noted that the drawings are only for the purpose of illustrating the invention, are schematic illustrations of the embodiments of the invention, and should not be construed as limiting the invention.

Referring to fig. 1 to 5, a power battery pack frame structure includes a rectangular bottom plate 3, a first module mounting frame 1 correspondingly connected to a long side of the bottom plate 3, and a second module mounting frame 2 correspondingly connected to another long side and two short sides of the bottom plate 3, and is characterized in that:

a detachable frame 4 which is formed by connecting a longitudinal strip and a plurality of transverse strips and is in a fishbone shape; the detachable frame 4 is attached to the lower surface 32 of the base plate 3 by bolts 5.

A plurality of first mounting nuts 12 are arranged on the first module mounting frame 1, and a first lapping structure 11 is arranged on the inner side edge of the first module mounting frame; a plurality of second mounting nuts 22 are arranged on the second module mounting frame 2, and a second lapping structure 21 is arranged on the inner side edge of the second module mounting frame;

one long edge of the bottom plate 3 is fixedly connected with a first lap joint structure 11 at the edge of the inner side of the first module mounting frame 1; the other long side and the two short sides of the bottom plate 3 are respectively and fixedly connected with the second lapping structure 21 on the inner side edge of the second module mounting frame 2.

A plurality of connecting nuts 31 are arranged on the lower surface 32 of the bottom plate 3; a plurality of mounting holes 41 are formed on the longitudinal strips and the transverse strips of the detachable frame 4; the plurality of mounting holes 41 on the detachable frame 4 correspond to the plurality of connecting nuts 31 on the bottom plate 3 one by one, and are connected and fixed by bolts 5.

The lowermost surface 42 of the detachable frame 4 is slightly lower than the frame bottom surface 13 of the first module mounting frame 1.

Almost all battery packs on the market, whether metal plate or aluminum alloy battery packs, have the same problem, namely the bottom plate is located the battery pack minimum. Because the plane of the bottom plate is large, the area of the bottom support is large, the occurrence probability is high relatively speaking, and the maintenance is difficult and the maintenance cost is high. There is a large range of flats on the bottom of the pack. During the driving process of the electric automobile, because the plane is low in position and large in area, the bottom supporting accident can occur anywhere on the plane with high probability.

Based on the problem, on one hand, the utility model improves the ground clearance of the large plane of the bottom plate from the structural design of the battery pack; on the other hand, a detachable frame is adopted to divide the large plane of the bottom plate into a plurality of small planes, and the probability of occurrence of bottom supporting accidents is concentrated on the frame. The frame improves the structural strength of the battery pack. On one hand, the large plane of the bottom plate is divided into a plurality of small planes which are lower than the small planes, and the design concentrates the probability of occurrence of bottom supporting accidents on the frame.

Claims

1. The utility model provides a power battery package frame construction, is including being rectangular bottom plate (3), correspond first module installation frame (1) of being connected with a long limit on bottom plate (3), correspond second module installation frame (2) of being connected with another long limit and two minor faces on bottom plate (3), characterized by:

the detachable frame (4) is formed by connecting a longitudinal strip and a plurality of transverse strips and is in a fishbone shape; the detachable frame (4) is connected to the underside (32) of the base plate (3) by means of bolts (5).

2. The power battery pack frame structure according to claim 1, wherein: a plurality of first mounting nuts (12) are arranged on the first module mounting frame (1), and a first lapping structure (11) is arranged on the inner side edge of the first module mounting frame;

a plurality of second mounting nuts (22) are arranged on the second module mounting frame (2), and a second lapping structure (21) is arranged on the inner side edge of the second module mounting frame;

one long edge of the bottom plate (3) is fixedly connected with a first lap joint structure (11) at the inner side edge of the first module mounting frame (1); and the other long edge and the two short edges of the bottom plate (3) are fixedly connected with a second lap joint structure (21) on the inner side edge of the second module mounting frame (2) respectively.

3. The power battery pack frame structure according to claim 1 or 2, wherein: a plurality of connecting nuts (31) are arranged on the lower surface (32) of the bottom plate (3); a plurality of mounting holes (41) are formed in the longitudinal strips and the transverse strips of the detachable frame (4); the plurality of mounting holes (41) in the detachable frame (4) are respectively in one-to-one correspondence with the plurality of connecting nuts (31) in the bottom plate (3) and are fixedly connected through bolts (5).

4. The power battery pack frame structure according to claim 1 or 2, wherein: the lowest surface (42) of the detachable frame (4) is slightly lower than the frame bottom surface (13) of the first module mounting frame (1).