CN107910466B - Fiber reinforced composite material battery box body for new energy automobile and processing method thereof - Google Patents

Fiber reinforced composite material battery box body for new energy automobile and processing method thereof Download PDF

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Publication number
CN107910466B
CN107910466B CN201711095970.4A CN201711095970A CN107910466B CN 107910466 B CN107910466 B CN 107910466B CN 201711095970 A CN201711095970 A CN 201711095970A CN 107910466 B CN107910466 B CN 107910466B
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China
Prior art keywords
box body
reinforced composite
placing space
bracket
resin
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CN201711095970.4A
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Chinese (zh)
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CN107910466A (en
Inventor
严兵
刘成
赵清新
郎鸣华
何定军
刘腾达
刘圣强
张林强
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Zhenjiang Aosheng lightweight Automobile Technology Co.,Ltd.
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Jiangsu Aosheng Composite Materials Hi Tech Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention relates to a fiber reinforced composite material battery box body for a new energy automobile, which comprises a box body, a support and a reinforcing part, wherein the box body is provided with at least one opening, the support comprises a bottom plate and side plates, a placing space is formed between the bottom plate and the side plates, the box body is arranged in the placing space, and the reinforcing part circumferentially encloses the support provided with the box body. The processing method comprises the following steps: forming a box body with an opening through a pultrusion process; forming a bracket with a placing space by a die pressing process; putting the box body into the placing space, and connecting the box body and the placing space; the periphery of the support provided with the box body is wound through a winding process to form a reinforcing part. The battery box body is processed by adopting the fiber reinforced composite material, so that the battery box body has the advantages of good specific strength, specific rigidity, impact resistance, corrosion resistance and sealing property, strong collision impact resistance and obvious weight reduction effect; and the production efficiency is high, the production cost is low, and the mass production can be realized.

Description

Fiber reinforced composite material battery box body for new energy automobile and processing method thereof
Technical Field
The invention relates to the field of composite material manufacturing, in particular to a fiber reinforced composite material battery box body for a new energy automobile and a processing method thereof.
Background
With the development of new energy electric vehicles, the power battery is used as a core part of the new energy vehicle, the safety of the power battery directly affects the safety of the whole vehicle, a power battery system of the pure electric vehicle is usually arranged below a vehicle body bottom plate and has a relatively harsh installation environment, a battery box body is used as a carrier of the power battery, the power battery plays a key role in the safe work and protection of a battery pack, and the safety, reliability and durability of the power battery are critical and determine the performance of the whole vehicle.
In China, the traditional battery box body is made of metal materials such as steel or aluminum alloy, but the weight of the metal battery box body is heavier, so that the energy efficiency ratio of the battery box body is reduced; the sealing property is poor, so that the battery box body is soaked in water to cause short circuit of the battery; the corrosion resistance is poor, so that the battery box body is easy to corrode; in addition, the automobile has the defects of complex processing technology, low thermal conductivity, low impact strength and the like, and the light weight of the automobile cannot be realized. The battery box body can also be made of resin-based fiber reinforced composite materials, particularly carbon fiber composite materials, and the specific strength, specific stiffness, impact resistance, corrosion resistance and other properties of the materials are greatly superior to those of metal materials, and the materials are corrosion-resistant and obvious in weight reduction effect and are ideal materials for battery box bodies for future electric vehicles.
Disclosure of Invention
The invention aims to provide a fiber reinforced composite material battery box body for a new energy automobile.
In order to achieve the purpose, the invention adopts the technical scheme that:
a fiber reinforced composite battery box for a new energy automobile comprises:
a case body having at least one opening;
the box comprises a box body, a bracket and a cover, wherein the bracket comprises a bottom plate and side plates, a placing space is formed between the bottom plate and the side plates, and the box body is arranged in the placing space;
the reinforcing part is used for circumferentially enclosing the bracket provided with the box body.
Preferably, the opening of the box body faces the side plate of the bracket.
Preferably, the opening of the box body faces upward.
Further preferably, the battery box body further comprises a box cover, and the box cover covers the placing space and shields the opening of the box body.
Preferably, the box body is a pipe body.
Further preferably, the section of the box body is square.
Preferably, the bottom plate is horizontally arranged, the side plates are vertically positioned at two opposite sides of the bottom plate, and the upper end parts of the side plates horizontally extend to one side far away from the bottom plate to form an extension part.
Preferably, the width of the placing space is matched with the width of the box body.
Preferably, the fibers in the fiber reinforced composite material comprise carbon fibers, glass fibers, basalt fibers, aramid fibers and polyimide fibers; the matrix resin in the fiber reinforced composite material comprises thermosetting resin or thermoplastic resin, the thermosetting resin comprises unsaturated resin, vinyl resin, epoxy resin, phenolic resin, cyanate resin and bismaleimide resin, and the thermoplastic resin comprises polyolefin, polycarbonate and polyimide.
Further preferably, the fibers in the fiber-reinforced composite material are carbon fibers, and the matrix resin is an epoxy resin.
Preferably, the box body, the bracket, the reinforcing part and the box cover are all made of the fiber reinforced composite material.
The invention further aims to provide a processing method of the fiber reinforced composite material battery box body for the new energy automobile.
In order to achieve the purpose, the invention adopts the technical scheme that:
a processing method of a fiber reinforced composite material battery box body for a new energy automobile comprises the following steps:
(1a) forming a pipe body with an opening through a pultrusion process, wherein the pipe body is the box body;
(1b) forming the bracket with the placing space by a mould pressing process;
(2) placing the box body into the placing space and connecting the box body and the placing space;
(3) and winding the periphery of the bracket on which the box body is placed through a winding process to form the reinforcing part.
Preferably, when the box body is placed in the placing space, the opening of the box body faces the side plate of the bracket.
Preferably, when the box body is placed in the placing space, the opening of the box body faces upwards.
Further preferably, the method further comprises the steps of forming a box cover through a compression molding process, covering the box cover above the placing space, and shielding and connecting the opening of the box body.
Preferably, the joining is performed by gluing or mechanical means, preferably by means of an adhesive.
Comparing the fiber reinforced composite material with the metal material:
fiber-reinforced composite material Metal material
Weight/density 1.4 (carbon fiber reinforced) -2.1 (glass fiber reinforced) 2.7-7.8 g/cm3
Corrosion resistance Acid and alkali resistance Is not acid and alkali resistant
Sealing property Good taste Difference (D)
Impact strength Good taste Difference (D)
Compared with a prepreg-autoclave or resin transfer molding method, the processing method provided by the application comprises the following steps:
the present application processing method Prepreg-autoclave or resin transfer moulding
Production efficiency 100000 Dainai + <10000A year
Production cost 400-800 1500-3000
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
the battery box body is processed by adopting the fiber reinforced composite material, so that the battery box body has the advantages of good specific strength, specific rigidity, impact resistance, corrosion resistance and sealing property, strong collision impact resistance and obvious weight reduction effect; and the production efficiency is high, the production cost is low, and the mass production can be realized.
Drawings
FIG. 1a is a schematic view of a tank body according to the first embodiment;
FIG. 1b is a schematic view of a stent according to the first embodiment;
FIG. 1c is a schematic view of the case body in a rack according to the first embodiment;
FIG. 1d is a schematic view of a battery case according to the first embodiment;
FIG. 2a is a schematic view of a tank body according to a second embodiment;
FIG. 2b is a schematic view of a bracket according to the second embodiment;
FIG. 2c is a schematic view of the case body in the rack according to the second embodiment;
FIG. 2d is a schematic view of the reinforcing part wound around the outside of the bracket on which the case body is placed according to the second embodiment;
FIG. 2e is a schematic view of a case cover according to the second embodiment;
FIG. 2f is a schematic view of a battery case according to a second embodiment.
Wherein: 1a, 1b, a tank body; 10. opening, 2, support; 20. a base plate; 21. a side plate; 22. a placement space; 23. an extension portion; 3. a reinforcing part; 4. and a box cover.
Detailed Description
The invention is further described below with reference to the accompanying drawings and embodiments:
the first embodiment is as follows:
a fiber reinforced composite battery box for a new energy automobile comprises:
a tank body 1a, the tank body 1a having at least one opening 10, in this embodiment: the box body 1a is a pipe body, and the cross section is square, that is, the box body 1a is a square pipe, as shown in fig. 1 a.
Support 2, support 2 include bottom plate 20 and curb plate 21, form between bottom plate 20 and the curb plate 21 and place space 22, place the width of space 22 and the width phase-match of case body 1a, in this embodiment: the bottom plate 20 is horizontally disposed, the side plates 21 are vertically disposed on two opposite sides of the bottom plate 20, and the upper ends of the side plates 21 horizontally extend to a side away from the bottom plate 20 to form extension portions 23, and the extension portions 23 can be used as handles to carry the battery box, as shown in fig. 1 b.
The box body 1a is disposed in the placing space 22 with the opening 10 of the box body 1a of the tube body facing the side plate 21 of the stand 2 so that the side plate 21 just blocks the opening 10 of the box body 1a as shown in fig. 1 c. That is, this structure requires that the battery be placed in the case body 1a first and then the battery case be assembled.
The reinforcing part 3 circumferentially surrounds the bracket 2 provided with the box body 1a, namely, the side plate 21 of the bracket 2 and the box body 1a are wrapped by the reinforcing part 3, as shown in fig. 1 d.
In this embodiment: the box body 1a, the support 2 and the reinforcing part 3 are all made of fiber reinforced composite materials, the fiber reinforced composite materials are carbon fiber composite materials, fibers are carbon fibers, and matrix resin is epoxy resin.
The following details describe the processing method of this embodiment:
(1a) forming a square pipe body with an opening 10 through a pultrusion process, wherein the square pipe body is the box body 1 a;
(1b) the bracket 2 with the placing space is formed through a mould pressing process, namely, the bottom plate 20, the side plate 21 and the extension part 23 on the side plate 21 are integrally formed;
(2) placing the box body 1a into the placing space 22 of the bracket 2, and connecting the opening 10 of the box body 1a of the square pipe body towards the side plate 21 of the bracket 2, wherein the connection mode can be bonding or mechanical mode, wherein the bonding mode adopts bonding agent, and the mechanical mode adopts screws and the like;
(3) and winding the periphery of the bracket 2 provided with the box body 1a through a winding process to form a reinforcing part 3.
Example two:
a box body 1b, the box body 1a having at least one opening 10, in this embodiment: the box body 1a is a tube body, and the cross section is square, that is, the box body 1a is a square tube, as shown in fig. 2 a.
Support 2, support 2 include bottom plate 20 and curb plate 21, form between bottom plate 20 and the curb plate 21 and place space 22, place the width of space 22 and the width phase-match of case body 1a, in this embodiment: the bottom plate 20 is horizontally disposed, the side plates 21 are vertically disposed on two opposite sides of the bottom plate 20, and the upper ends of the side plates 21 horizontally extend to a side away from the bottom plate 20 to form extension portions 23, and the extension portions 23 can be used as handles to carry the battery box, as shown in fig. 2 b.
The box body 1a is disposed in the placing space 22, and the opening 10 of the box body 1b of the tube body faces upward, that is, the opening 10 of the box body 1b is exposed, so that the battery can be placed therein, as shown in fig. 2 c.
The reinforcing part 3, the reinforcing part 3 circumferentially encloses the bracket 2 provided with the box body 1a, namely, the side plate 21 of the bracket 2 and the box body 1a are wrapped, as shown in fig. 2 d.
The cover 4 covers the storage space 22 and covers the opening 10 of the box body 1b, and the width of the cover 4 can be consistent with the width of the bracket 2, i.e. the width of the cover 4 is equal to the sum of the widths of the bottom plate 20 and the two side extending parts 23, as shown in fig. 2e and 2 f.
In this embodiment: the box body 1a, the bracket 2, the reinforcing part 3 and the box cover 4 are all made of fiber reinforced composite materials, the fiber reinforced composite materials are carbon fiber composite materials, the fibers are carbon fibers, and the matrix resin is epoxy resin.
The following details describe the processing method of this embodiment:
(1a) forming a square pipe body with an opening 10 through a pultrusion process, wherein the square pipe body is the box body 1 b;
(1b) the bracket 2 with the placing space is formed through a mould pressing process, namely, the bottom plate 20, the side plate 21 and the extension part 23 on the side plate 21 are integrally formed;
(2) placing the box body 1b into the placing space 22 of the bracket 2, and connecting the box body 1b with the opening 10 of the square tube body facing upwards, wherein the connection mode can be bonding or mechanical mode, the bonding adopts bonding agent, and the mechanical mode adopts screws and the like;
(3) winding the periphery of the bracket 2 provided with the box body 1a through a winding process to form a reinforcing part 3;
(4) the cover 4 is molded by a compression molding process, the cover 4 is covered above the storage space 22, and the opening 10 of the box body 1b is covered and connected by an adhesive or a mechanical method, wherein the adhesive is used, and the mechanical method is a screw or the like.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a new energy automobile is with fibre reinforced composite battery box which characterized in that: consists of the following components:
the box body is a pipe body, and the box body is provided with at least one opening;
the box comprises a bracket, a box body and a side plate, wherein the bracket comprises a bottom plate and a side plate, a placing space is formed between the bottom plate and the side plate, the box body is arranged in the placing space, and an opening of the box body faces to the side plate of the bracket;
the reinforcing part is used for circumferentially enclosing the bracket provided with the box body.
2. The fiber reinforced composite battery box for the new energy automobile according to claim 1, characterized in that: the bottom plate is horizontally arranged, the side plates are vertically positioned at two opposite sides of the bottom plate, and the upper end parts of the side plates horizontally extend to one side far away from the bottom plate to form an extending part.
3. The fiber reinforced composite battery box for the new energy automobile according to claim 1, characterized in that: the fiber in the fiber reinforced composite material comprises carbon fiber, glass fiber, basalt fiber, aramid fiber and polyimide fiber, the matrix resin in the fiber reinforced composite material comprises thermosetting resin or thermoplastic resin, the thermosetting resin comprises unsaturated resin, vinyl resin, epoxy resin, phenolic resin, cyanate resin and bismaleimide resin, and the thermoplastic resin comprises polyolefin, polycarbonate and polyimide.
4. A method of manufacturing a battery can according to any preceding claim, wherein: the method comprises the following steps:
(1a) forming a pipe body with an opening through a pultrusion process, wherein the pipe body is the box body;
(1b) forming the bracket with the placing space by a mould pressing process;
(2) placing the box body into the placing space and connecting the box body and the placing space;
(3) and winding the periphery of the bracket on which the box body is placed through a winding process to form the reinforcing part.
5. The method of claim 4, wherein: the connection is made by adhesion or mechanical means.
CN201711095970.4A 2017-11-09 2017-11-09 Fiber reinforced composite material battery box body for new energy automobile and processing method thereof Active CN107910466B (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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CN107910466B true CN107910466B (en) 2020-09-11

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Effective date of registration: 20220531

Address after: 212000 No. 66 and No. 68, Changxiang East Avenue, Dantu District, Zhenjiang City, Jiangsu Province

Patentee after: Zhenjiang Aosheng lightweight Automobile Technology Co.,Ltd.

Address before: 215221 No. 1, ousheng Avenue, Pingwang, Wujiang District, Suzhou City, Jiangsu Province

Patentee before: JIANGSU AOSHENG COMPOSITE MATERIALS HI-TECH Co.,Ltd.