CN218472185U

CN218472185U - Passenger car power battery upper cover based on fiber composite material

Info

Publication number: CN218472185U
Application number: CN202220223323.7U
Authority: CN
Inventors: 王振涛; 张占江; 乔延涛; 张新宾; 曹云飞; 符运喜; 杨明
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2023-02-10
Anticipated expiration: 2032-01-27

Abstract

The utility model relates to a passenger car power battery upper cover based on fibre combined material, including assembling the upper cover on the lower box, it includes the upper cover body that fibre combined material made, and upper cover body middle part is equipped with the boss that runs through both ends around, and the upper cover body openly is equipped with the strengthening rib in the boss both sides, and upper cover body bottom edge is equipped with the sealed face that circumference set up, and the sealed face is equipped with the chamfer rather than the lateral wall junction of the upper cover body of being connected, and the lateral wall of upper cover body sets up the draft inclination, and upper cover body reverse side is equipped with the upper cover supporter. Compared with the metal plate upper cover, the utility model has lighter weight, has certain resistance effect on thermal runaway of the power battery compared with SMC material, and improves the escape time of personnel in the passenger compartment; the problem that the SMC is easy to crack in the production and assembly of actual products is solved; the blank of design factors of reinforcing ribs, transition fillets, selection of material thickness, demoulding angles and the like of the upper cover product of the power battery of the passenger car based on the fiber composite material is made up.

Description

Passenger car power battery upper cover based on fiber composite material

Technical Field

The utility model belongs to the technical field of power battery, concretely relates to be applied to fibre combined material power battery upper cover of passenger car.

Background

At present, the power battery upper cover of the electric vehicle is designed based on metal sheet metal and SMC products, and the fiber composite material upper cover is more applied to a standard box of a power battery of a commercial vehicle, but less applied to passenger vehicles, and the batch application is not realized at present.

The prior art discloses a molding process of an upper cover of a composite battery box, which comprises the following steps: preparing a continuous fiber reinforced resin prepreg containing a hollow grid structure; laying the obtained continuous fiber reinforced resin prepreg on a mould; spraying chopped fibers and matrix resin on the continuous fiber reinforced resin prepreg; paving continuous fiber reinforced resin prepreg on the sprayed chopped fiber and matrix resin again; curing the intermediate product on the die in a heat preservation and pressure maintaining manner; and (5) demolding the upper cover of the cured and shaped composite battery box. The invention can realize the structural design and the integral molding of the upper cover of the composite material battery box with low cost, and the prepreg is prepared by mixing the hollow-out continuous reinforced fiber material with the chopped fiber reinforced composite material, thereby realizing the requirements of different structural strengths and the layering process of the upper cover of the complex battery pack.

The prior art also discloses a continuous fiber battery cover, including the battery cover body, the inside fibre preimpregnation material that is equipped with of battery cover body, the interval is equipped with the perforation on the charge level of fibre preimpregnation material, the battery cover body forms through bulk material and fibre preimpregnation material mould pressing, fibre preimpregnation material includes a plurality of band, the band is alternately woven, weave including plain weave and twill weave, a plurality of is equipped with the weave hole on the band face, weave hole and perforation coincidence, the band is formed by continuous long fiber tiling, and fibre DMC surface is equipped with the thermoplastic film, the thermoplastic film is made for the PVC material, the bulk material is the bulk material, for prior art, the utility model discloses a bulk material and fibre preimpregnation material become the mould pressing battery cover, battery cover intensity increases, and self weight alleviates, and the shock resistance is strong, the utility model discloses simple structure, the usage is extensive, very easily promotes.

However, the above description details the fiber material, the fiber weave, and the continuous fiber prepreg, and the structure of the power battery upper cover formed by using the continuous fiber prepreg as the raw material is not described in detail.

Disclosure of Invention

The utility model aims at providing a passenger car power battery upper cover based on fibre combined material is proposed for the first time to solve continuous fibers combined material and be applied to passenger car power battery upper cover, effectively reduce upper cover weight, avoid the problem that crackle appears in production and the assembly.

The utility model aims at realizing through the following technical scheme:

a passenger car power battery upper cover based on fiber composite material comprises an upper cover 1; the upper cover 1 is assembled on the lower box body 11, and a sealed cavity is formed between the upper cover 1 and the lower box body 11;

the upper cover 1 comprises an upper cover body, the middle part of the upper cover body is provided with a boss penetrating through the front end and the rear end, the front surface 1-1 of the upper cover body is provided with a plurality of strip-shaped reinforcing ribs on two sides of the boss; a sealing surface arranged circumferentially is arranged at the bottom edge of the upper cover body; a chamfer is arranged at the joint of the sealing surface and the side wall of the upper cover body connected with the sealing surface; the side wall of the upper cover body is provided with a drawing slope, and the drawing angle 10 is 1-5 degrees; the upper cover body is made of fiber composite materials, and the thickness of the large fabric of the upper cover body is 1.2-4.5 mm; the reverse side 1-2 of the upper cover body there are 2 upper cover supports 7.

Further, the upper cover 1 is assembled on the lower box body 11 through a plurality of upper cover fixing bolts I12 and upper cover fixing bolts II 13, the number of the upper cover fixing bolts I12 is determined according to the size of the upper cover 1, and the number of the upper cover fixing bolts II 13 is 2.

Further, the strengthening rib is 5, and the left side sets up 3, and the right side sets up 2, and 4 strengthening ribs symmetric distribution in front end are in the left and right both sides of boss, the same further ground of spaced distance between 3 strengthening ribs in the left side, all open the bolt hole on the 1 st strengthening rib of front end of left and right both sides. Furthermore, the height 5 of the reinforcing rib is 1-3 mm, and the width 8 of the reinforcing rib is 50-200 mm.

Furthermore, the width 2 of the sealing surface is 25-35 mm, the width 3 of the effective sealing surface is 8-12 mm, and the thickness 4 of the sealing surface plate is 3-5 mm.

Furthermore, the chamfer 9 is 3-5 mm.

A battery, characterized by: comprising said upper cover 1 made of a fibre composite material.

Compared with the prior art, the beneficial effects of the utility model are that:

compared with the metal plate upper cover, the power battery upper cover based on the fiber composite material has the effect of light weight, has certain resistance effect on thermal runaway of the power battery compared with SMC material, and improves the escape time of personnel in a passenger compartment; moreover, the problem that the SMC is easy to crack in the production and assembly of actual products is solved; the blank of design factors of reinforcing ribs, transition fillets, selection of material thickness, demoulding angles and the like of the upper cover product of the power battery of the passenger vehicle based on the fiber composite material is made up; the utility model discloses the upper cover assurance performance requirement is: the mode is larger than 35HZ, and the large surface can bear the pretightening force of more than 90 NM.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the connection between an upper cover and a lower case;

FIG. 2 is a schematic structural view of the front side of the upper cover body;

FIGS. 3-4 are sectional views A-A of FIG. 2;

fig. 5 is a schematic structural view of the upper cover support and the reverse side of the upper cover body.

In the drawing, 1-1 of an upper cover, 1-2 of the front of the upper cover body, 2 of the back of the upper cover body, 3 of sealing surface width, 3 of effective sealing surface width, 5 of sealing surface plate thickness, 6 of reinforcing rib height, 7 of large surface material thickness, 8 of upper cover support, 9 of reinforcing rib width, 10 of chamfer angle, 11 of drawing angle, 12 of a lower box body, I13 of an upper cover fixing bolt and II of an upper cover fixing bolt.

Detailed Description

The invention will be further described with reference to the following examples:

the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in FIG. 2, the utility model discloses passenger car power battery upper cover based on fibre combined material, include the upper cover 1 of making by fibre combined material, on upper cover 1 assembled lower box 11 through a plurality of upper cover fixing bolt I12 and upper cover fixing bolt II 13, formed sealed cavity between upper cover 1 and the lower box 11. Specifically, the number of the upper cover fixing bolts I12 is determined according to the size of the upper cover 1, and the number of the upper cover fixing bolts II 13 is 2. The upper cover fixing bolt I12 is M5-M6.

The lower housing 11 includes, but is not limited to, aluminum alloy, cast aluminum, composite materials, plastics, and the like.

The upper cover 1 comprises an upper cover body, wherein a boss penetrating through the front end and the rear end is arranged in the middle of the upper cover body, the front surface 1-1 of the upper cover body is provided with a plurality of strip-shaped reinforcing ribs on two sides of the boss.

Specifically, the strengthening rib is 5, and the left side sets up 3, and the right side sets up 2, and 4 strengthening ribs symmetric distribution in front end are in the boss left and right both sides. The distance between the 3 reinforcing ribs on the left side is the same.

Bolt holes are formed in the 1 st reinforcing rib at the front end of the left side and the right side.

The height 5 of the reinforcing rib is 1-3 mm, and the width 8 of the reinforcing rib is 50-200 mm.

The bottom edge of the upper cover body is provided with a sealing surface which is circumferentially arranged, the width of the sealing surface is 2-35 mm, the width of an effective sealing surface is 3-12 mm, and the thickness of a sealing surface plate is 4-5 mm.

And a chamfer angle 9 of 3-5 mm is arranged at the joint of the sealing surface and the side wall of the upper cover body connected with the sealing surface. The side wall of the upper cover body is provided with a drawing inclination, and the drawing angle 10 is 1-5 degrees.

The upper cover body is made of fiber composite materials, and the thickness of the large fabric of the upper cover body is 1.2-4.5 mm.

2 upper cover supports 7 are arranged on the reverse side 1-2 of the upper cover body, the upper cover supports 7 are made of foam, and the foam is made of silica gel foam, but the method is not limited to the above. The utility model discloses upper cover 1 assurance performance requirement is: the mode is larger than 35HZ, and the large surface can bear the pretightening force of more than 90 NM.

Example 1

The utility model provides a passenger car power battery upper cover based on fibre combined material, includes upper cover 1, upper cover 1 assembles down box 11 through 72 upper cover fixing bolt I12 and 2 upper cover fixing bolt II 13 on, forms sealed cavity between upper cover 1 and the lower box 11. The upper cover 1 comprises an upper cover body, the middle of the upper cover body is provided with bosses penetrating through the front end and the rear end, the upper cover body is in front 1-1, the left side of each boss is provided with 3 strip-shaped reinforcing ribs, the right side of each boss is provided with 2 reinforcing ribs, the distances among the 3 reinforcing ribs on the left side of each boss are the same, and bolt holes are formed in the 1 st reinforcing rib at the front ends of the left side and the right side of each boss. The height 5 of the reinforcing rib is 1-3 mm, and the width 8 of the reinforcing rib is 50-200 mm. The bottom edge of the upper cover body is provided with a sealing surface which is circumferentially arranged, the width of the sealing surface is 2-35 mm, the width of an effective sealing surface is 3-12 mm, and the thickness of a sealing surface plate is 4-5 mm. And a chamfer angle 9 is 3-5 mm is arranged at the joint of the sealing surface and the side wall of the upper cover body connected with the sealing surface. The side wall of the upper cover body is provided with a drawing inclination, and the drawing angle 10 is 1-5 degrees. The upper cover body is made of fiber composite materials, and the thickness of the large fabric of the upper cover body is 1.2-4.5 mm. 2 upper cover supports 7 are arranged on the reverse surface 1-2 of the upper cover body. It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The utility model provides a passenger car power battery upper cover based on fibre combined material which characterized in that: comprises an upper cover (1); the upper cover (1) is assembled on the lower box body (11), and a sealed cavity is formed between the upper cover (1) and the lower box body (11);

the upper cover (1) comprises an upper cover body, the middle part of the upper cover body is provided with a boss penetrating through the front end and the rear end, the front surface (1-1) of the upper cover body is provided with a plurality of strip-shaped reinforcing ribs on two sides of the boss; the bottom edge of the upper cover body is provided with a sealing surface which is arranged circumferentially; a chamfer is arranged at the joint of the sealing surface and the side wall of the upper cover body connected with the sealing surface; the side wall of the upper cover body is provided with a drawing slope, and the drawing angle (10) is 1-5 degrees; the upper cover body is made of fiber composite materials, and the thickness (6) of the large fabric is 1.2-4.5 mm; 2 upper cover supports (7) are arranged on the reverse side (1-2) of the upper cover body;

the upper cover (1) is assembled on the lower box body (11) through a plurality of upper cover fixing bolts I (12) and upper cover fixing bolts II (13), the number of the upper cover fixing bolts I (12) is determined according to the size of the upper cover (1), and the number of the upper cover fixing bolts II (13) is 2.

2. The fiber composite material-based upper cover for a power battery of a passenger car according to claim 1, characterized in that: the strengthening rib is 5, and the left side sets up 3, and the right side sets up 2, and 4 strengthening ribs symmetric distribution in front end are in the left and right both sides of boss, the spaced distance is the same between 3 strengthening ribs in the left side.

3. The fiber composite material-based upper cover for the power battery of the passenger car according to claim 2, characterized in that: bolt holes are formed in the 1 st reinforcing rib at the front ends of the left side and the right side.

4. The fiber composite-based passenger vehicle power battery upper cover according to claim 1, characterized in that: the height (5) of the reinforcing rib is 1-3 mm, and the width (8) of the reinforcing rib is 50-200 mm.

5. The fiber composite-based passenger vehicle power battery upper cover according to claim 1, characterized in that: the width (2) of the sealing surface is 25-35 mm, the width (3) of the effective sealing surface is 8-12 mm, and the thickness (4) of the sealing surface plate is 3-5 mm.

6. The fiber composite-based passenger vehicle power battery upper cover according to claim 1, characterized in that: the chamfer (9) is 3-5 mm.

7. A battery, characterized by: a passenger vehicle power cell upper cover comprising a fiber composite-based material according to claim 1.