CN217485611U - Battery bottom-covering guard board with special-shaped section aluminum alloy section - Google Patents

Abstract

The utility model relates to a backplate at bottom of dysmorphism cross-section aluminum alloy section battery package, including end backplate body, evenly be equipped with a plurality of convex hulls along length direction on the backplate body at the bottom, the convex hull is higher than end backplate body upper surface, be equipped with the cavity that runs through along end backplate body width direction in the convex hull. Through set up a plurality of convex hulls on end backplate body, more conventional rectangle die cavity cross-section anti extrusion ability reinforce, under the same extrusion force ending condition, it can be the quality lighter, it is littleer to occuping Z to design size. The battery pack bottom guard plate can be assembled by a plurality of blocks according to actual requirements, and a single bottom guard plate is small in size, light in weight and convenient to transport and install; after the design is formed by assembling a plurality of bottom guard plates, the extrusion die is universal, low in cost and high in production efficiency.

Description

Battery bottom-covering guard board with special-shaped section aluminum alloy section

Technical Field

The utility model relates to a power battery module especially relates to a backplate at bottom of dysmorphism cross-section aluminum alloy ex-trusions battery package.

Background

Along with the development of electric automobiles, the requirements on the safety of the electric automobiles are higher and higher. The battery pack of the electric automobile can emit a large amount of heat in the working process, and the battery pack is easy to generate the phenomena of fire, explosion and the like. The introduction of the liquid cooling system greatly reduces the probability of the occurrence of the safety accidents, so that an effective protective structure needs to be designed to ensure the normal operation of the liquid cooling system.

At present, the protection of the liquid cooling system in the industry is mainly to design a bottom protection plate which is fixed at the bottom of a battery pack and completely covers a liquid cooling plate, so that steps and gravels are prevented from directly colliding and impacting the liquid cooling plate in the driving process of the electric automobile.

The inner bottom protection plate structure in the industry mainly comprises a structural steel stamping formed part and an aluminum alloy extrusion section, when the structural steel stamping formed part is extruded in the Z direction, the extrusion resistance is weak due to small section inertia moment, the limited extrusion resistance can be improved only through the structural modeling, and the protection requirement of a liquid cooling system can not be met; the structural steel stamping forming piece can not be formed in a blocking mode, so that the structural steel stamping forming piece is large in size, large in mass, inconvenient to transport and install and high in die cost; the cross section of a cavity of the aluminum alloy profile piece is generally rectangular, and the aluminum alloy profile piece can be formed by splicing a plurality of aluminum alloy sections, but has higher requirements on the Z-direction design size and larger total mass. Above-mentioned structure all can not effectively protect liquid cooling system runner not destroyed under the harsh operating mode, and this just leads to the battery package in next work, takes place the probability greatly increased that fires the explosion.

SUMMERY OF THE UTILITY MODEL

For solving the above problem, the utility model provides a backplate at bottom of dysmorphism cross-section aluminum alloy ex-trusions battery package can effectively increase the anti extrusion ability of backplate at the bottom.

The utility model adopts the technical proposal that: the utility model provides a backplate at bottom of dysmorphism cross-section aluminum alloy ex-trusions battery package, includes end backplate body, its characterized in that: the bottom guard plate comprises a bottom guard plate body and is characterized in that a plurality of convex hulls are evenly arranged on the bottom guard plate body along the length direction, the convex hulls are higher than the upper surface of the bottom guard plate body, and cavities which penetrate through the bottom guard plate body along the width direction are arranged in the convex hulls.

Preferably, the height a of the convex hull is 9-10 mm, and the width b is 49-50 mm.

Preferably, the distance c between the adjacent convex hulls is 29-30 mm.

Preferably, a partition reinforcing plate is arranged in the middle of the cavity of the convex hull.

Preferably, the convex hull has an isosceles trapezoid cross section.

Furthermore, the inclination d of the oblique edge of the convex hull is 30-40 degrees.

Preferably, the bottom protection plate body is fixed at the bottom of the battery pack, completely covers the liquid cooling plate, is not in contact with a flow passage area of the liquid cooling plate, and is provided with a gap in the Z direction.

The utility model discloses the beneficial effect who gains is: through set up a plurality of convex hulls on end backplate body, more conventional rectangle die cavity cross-section anti extrusion ability reinforce, under the same extrusion force ending condition, it can be the quality lighter, it is littleer to occuping Z to design size. The battery pack bottom guard plate can be assembled by a plurality of blocks according to actual requirements, and the single bottom guard plate has small size and light weight and is convenient to transport and install; after the design is formed by assembling a plurality of bottom guard plates, the extrusion die is universal, low in cost and high in production efficiency.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a dimensional view of FIG. 3;

FIG. 5 is a bottom shield plate crush resistance displacement-force curve;

wherein: 1. a bottom guard plate body; 2. a convex hull; 3. a cavity; 4. a partition reinforcing plate; 5. and (4) bolt fixing holes.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-4, the utility model discloses a backplate at bottom of dysmorphism cross-section aluminum alloy ex-trusions battery package, including end backplate body 1, evenly be equipped with a plurality of convex hulls 2 along length direction on end backplate body 1, convex hull 2 is higher than end backplate body 1 upper surface, is equipped with along the cavity 3 that end backplate body width direction runs through in the convex hull 2.

Referring to FIG. 3, in this embodiment, the height a of the convex hull 2 is 9-10 mm, and the width b is 49-50 mm.

In this embodiment, the distance c between adjacent convex hulls 2 is 29-30 mm.

In this embodiment, the middle of the cavity of the convex hull 2 is provided with a partition reinforcing plate 4.

In this embodiment, the cross section of the convex hull 2 is isosceles trapezoid, and the inclination d of the oblique side of the convex hull 2 is 30-40 °.

In this embodiment, be equipped with bolt fastening hole 1 on end backplate body 1, end backplate body 1 adopts extrusion process preparation to form, through the bolt fastening in battery package bottom, covers the liquid cooling board completely, and end backplate body 1 and the regional contactless of liquid cooling board runner leave the clearance to Z.

As shown in fig. 5, the battery bottom protection plate of the present invention has the advantages that the bottom protection plate body 1 is provided with the convex hulls 2, so that the anti-extrusion capability of the bottom protection plate body 1 at the convex hulls 2 is enhanced; and the anti-extrusion capability of the connecting section between two adjacent convex hulls 2 is enhanced. After 20mm of extrusion resistance, the extrusion force (19988N) of the extrusion die is far higher than that of a sheet metal stamping part (2503N), and is obviously higher than that of a conventional rectangular cavity section profile part (12340N) with the same Z-direction size, the same wall thickness and the same quality.

Here, it should be noted that the description of the above technical solutions is exemplary, the present specification may be embodied in different forms, and should not be construed as being limited to the technical solutions set forth herein. Rather, these descriptions are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solution of the present invention is limited only by the scope of the claims.

The shapes, sizes, ratios, angles, and numbers disclosed to describe aspects of the specification and claims are examples only, and thus are not limited to the details shown. In the following description, when a detailed description of related known functions or configurations is determined to unnecessarily obscure the focus of the present specification and claims, the detailed description will be omitted.

Where the terms "comprising", "having" and "including" are used in this specification, there may be another part or parts unless otherwise stated, and the terms used may generally be in the singular but may also be in the plural.

It should be noted that although the terms "first," "second," "top," "bottom," "side," "other," "end," "other end," and the like may be used and used in this specification to describe various components, these components and parts should not be limited by these terms. These terms are only used to distinguish one element or section from another element or section. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with the top and bottom elements being interchangeable or switchable with one another, where appropriate, without departing from the scope of the present description; the components at one end and the other end may be of the same or different properties to each other.

In describing positional relationships, for example, when positional sequences are described as being "on.. above", "over.. below", "below", and "next", unless such words or terms are used as "exactly" or "directly", they may include cases where there is no contact or contact therebetween. If a first element is referred to as being "on" a second element, that does not mean that the first element must be above the second element in the figures. The upper and lower portions of the member will change depending on the angle of view and the change in orientation. Thus, in the drawings or in actual construction, if a first element is referred to as being "on" a second element, it can be said that the first element is "under" the second element and the first element is "over" the second element. In describing temporal relationships, unless "exactly" or "directly" is used, the description of "after", "subsequently", and "before" may include instances where there is no discontinuity between steps. The features of the various embodiments of the present invention may be partially or fully combined or spliced with each other and may be implemented in a variety of different configurations as would be well understood by one of ordinary skill in the art. Embodiments of the present invention may be performed independently of each other, or may be performed together in an interdependent relationship.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.

Claims (7)

1. The utility model provides a backplate at bottom of dysmorphism cross-section aluminum alloy ex-trusions battery package, includes end backplate body, its characterized in that: the bottom guard plate comprises a bottom guard plate body and is characterized in that a plurality of convex hulls are uniformly arranged on the bottom guard plate body along the length direction, the convex hulls are higher than the upper surface of the bottom guard plate body, and cavities which penetrate through the bottom guard plate body along the width direction are formed in the convex hulls.

2. The profiled aluminum section battery bottom-covering protection plate as recited in claim 1, wherein: the height a of the convex hull is 9-10 mm, and the width b of the convex hull is 49-50 mm.

3. The profiled aluminum section battery bottom-covering protection plate as recited in claim 1, wherein: and the distance c between every two adjacent convex hulls is 29-30 mm.

4. The profiled aluminum section battery bottom-covering protection plate as recited in claim 1, wherein: and a partition reinforcing plate is arranged in the middle of the cavity of the convex hull.

5. The profiled aluminum section battery bottom-covering protection plate as recited in claim 1, wherein: the convex hull section is isosceles trapezoid.

6. The profiled aluminum section battery bottom-covering protection plate as claimed in claim 5, wherein: the inclination d of the inclined edge of the convex hull is 30-40 degrees.

7. The profiled aluminum section battery bottom-covering protection plate as recited in claim 1, wherein: the bottom protection plate body is fixed at the bottom of the battery pack, completely covers the liquid cooling plate, is not in contact with a flow passage area of the liquid cooling plate, and is provided with a gap in the Z direction.

Images