CN109103370B - Lightweight battery box of electric automobile - Google Patents
Lightweight battery box of electric automobile Download PDFInfo
- Publication number
- CN109103370B CN109103370B CN201810730087.6A CN201810730087A CN109103370B CN 109103370 B CN109103370 B CN 109103370B CN 201810730087 A CN201810730087 A CN 201810730087A CN 109103370 B CN109103370 B CN 109103370B
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- box body
- box
- outer skin
- skin
- inner skin
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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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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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
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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
- H01M2200/00—Safety devices for primary or secondary batteries
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to the technical field of new energy automobiles, in particular to a lightweight battery box of an electric automobile; the box body and the box cover are both made of an outer skin, an inner skin and a filling layer arranged between the outer skin and the inner skin in an adhesion mode, a prefabricated flanging is arranged at an opening of the box body, a plurality of connecting holes are formed in the prefabricated flanging, and the box cover is fixed on the opening of the box body through the connecting holes; the outer skin and the inner skin are both made of carbon fiber uniaxial prepreg cloth and carbon fiber plain woven prepreg cloth in a mixed mode; the battery box is reasonable in structure, the inner layer and the outer layer of the box body and the box cover are both made of composite materials, the battery box has the characteristics of fire resistance, flame retardance and corrosion resistance, the reinforcing member and the rock wool plate reinforcing side plates which are prepared by carbon fiber prepreg cloth are filled between the inner skin and the outer skin, and the mechanical substrate in the box cover is matched to form a cross-shaped staggered filling layer surrounding the box body, so that the overall strength of the battery box is effectively enhanced, the problems of heaviness and poor mechanical property of the traditional battery box are solved, and the lightweight development requirement.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a lightweight battery box of an electric automobile.
Background
Along with the rapid development of electric automobile, the lightweight process of car is also accelerating constantly, and the battery box that electric automobile used at present is the metal material constitution mostly, and its weak point includes: the electric automobile has the disadvantages of large mass, easy corrosion, fatigue resistance, low designability and poor electrical insulation, which are all unfavorable factors for preventing the light weight development of the electric automobile. The carbon fiber composite material has the characteristics of light weight, high strength, corrosion resistance, good thermodynamic property, strong designability and the like, and is widely used for structural materials so as to improve the product performance. Therefore, the carbon fiber composite material is applied to the battery box of the electric automobile, most of problems of the traditional metal battery box can be effectively solved, so that the light weight process of the electric automobile is greatly promoted, and a large amount of manufacturing cost and energy loss are reduced.
Disclosure of Invention
The invention aims to provide a lightweight battery box of an electric vehicle, which has a reasonable structure, can provide enough strength, ensures the safety of a battery pack, and is flame-retardant and corrosion-resistant, aiming at the defects and shortcomings of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a lightweight battery box of an electric automobile, which comprises a rectangular box body and a box cover, wherein the box body and the box cover are respectively made by bonding an outer skin, an inner skin and a filling layer between the outer skin and the inner skin; the outer skin and the inner skin are both made of carbon fiber uniaxial prepreg cloth and carbon fiber plain woven prepreg cloth which are mixed, paved and cured.
According to the scheme, the filling layer of the box body comprises a cross-shaped reinforcing member, the reinforcing member is laid between the inner skin and the outer skin at the bottom of the box body, four end parts of the reinforcing member are respectively provided with a reinforcing side plate integrally formed with the reinforcing member, and the four reinforcing side plates are respectively clamped between the inner skin and the outer skin of the side wall of the box body; the reinforcing member and the reinforcing side plate are prepared by mixing, paving and curing carbon fiber uniaxial prepreg cloth and carbon fiber plain weave prepreg cloth.
According to the scheme, four corner wrapping bottom plates are arranged on the periphery of the reinforcing member respectively, the corner wrapping bottom plates are clamped between an inner skin and an outer skin at the bottom of the box body, corner wrapping side plates connected with the corner wrapping bottom plates are arranged on two sides of each corner wrapping bottom plate, and the corner wrapping side plates are correspondingly clamped between the inner skin and the outer skin on the side wall of the box body; the corner wrapping bottom plate and the corner wrapping side plates are both made of rock wool plates.
According to the scheme, the filling layer of the box cover comprises a cross-shaped mechanical substrate corresponding to the strengthening member, the mechanical substrate is clamped between the inner skin and the outer skin, and the mechanical substrate is made of rock wool plates.
According to the scheme, the outer skin and the inner skin are both made of a plurality of layers of carbon fiber uniaxial prepreg cloth which are sequentially and alternately laid, bonded and cured, and the carbon fiber plain weave prepreg cloth is adhered to the surface layers of the outer skin and the inner skin.
The invention has the beneficial effects that: the battery box has a reasonable structure, the inner layer and the outer layer of the box body and the box cover are both made of composite materials, the battery box has the characteristics of fire resistance, flame retardance and corrosion resistance, the reinforcing member and the rock wool plate reinforcing side plates which are prepared by carbon fiber prepreg cloth are filled between the inner skin and the outer skin, and the mechanical substrate in the box cover is matched to form a crisscross filling layer surrounding the box body, so that the overall strength of the battery box is effectively enhanced, the problems of heaviness and poor mechanical property of the traditional battery box are solved, and the design structure of the battery box meeting the lightweight development requirement of an electric.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an exploded view of the case of the present invention.
In the figure:
1. a box body; 2. a box cover; 3. a reinforcing member; 11. an outer skin; 12. an inner skin; 13. prefabricating a flanging; 14. connecting holes; 21. a mechanical substrate; 31. reinforcing the side plate; 32. a corner wrapping bottom sheet; 33. wrap angle side panels.
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and examples.
As shown in fig. 1, the light-weight battery box for the electric vehicle comprises a rectangular box body 1 and a rectangular box cover 2, wherein the box body 1 and the box cover 2 are respectively made of an outer skin 11, an inner skin 12 and a filling layer between the outer skin and the inner skin, a prefabricated flanging 13 is arranged at an opening of the box body 1, a plurality of connecting holes 14 are formed in the prefabricated flanging 13, and the box cover 2 is fixed on the opening of the box body 1 through the connecting holes 14; the outer skin 11 and the inner skin 12 are both made of carbon fiber uniaxial prepreg cloth and carbon fiber plain woven prepreg cloth which are mixed, paved and cured; the outer skin 11 and the inner skin 12 are both made of a plurality of layers of carbon fiber uniaxial prepreg cloth which are sequentially and alternately laid and bonded, and the carbon fiber plain woven prepreg cloth is adhered to the surface layers of the outer skin 11 and the inner skin 12; the materials adopted by the outer skin 11, the inner skin 12 and the filling layer have good flame retardant property, so that the weight of the battery box can be reduced by more than 90% compared with that of a universal metal battery box under the condition of ensuring the structural strength of the battery box, and the battery box has higher fireproof performance and meets the development requirement of a lightweight electric automobile; the carbon fiber uniaxial prepreg cloth is staggered and laid in two directions of 0 degree and 90 degrees and is pasted to form the base layer of the inner skin 12 and the base layer of the outer skin 11, and the carbon fiber plain woven prepreg cloth is pasted on the surface layers of the outer skin 11 and the inner skin 12 respectively, so that the battery box can provide better structural strength and fireproof performance, and has better surface attractiveness.
The filling layer of the box body 1 comprises a cross-shaped reinforcing member 3, the reinforcing member 3 is laid between an inner skin 12 and an outer skin 11 at the bottom of the box body 1, reinforcing side plates 31 which are integrally formed with the reinforcing member 3 are arranged at four end parts of the reinforcing member 3, and the four reinforcing side plates 31 are respectively clamped between the inner skin 12 and the outer skin 11 on the side wall of the box body 1; the reinforcing member 3 and the reinforcing side plate 31 are prepared by mixing, paving and curing carbon fiber uniaxial prepreg cloth and carbon fiber plain weave prepreg cloth; the reinforcing member 3 and the reinforcing side plate 31 form a structural support between the bottom layer and the side wall outer skin 11 and the inner skin 12 around the box body 1, and the material of the reinforcing member has good flame retardant property through limit oxygen index, cone calorimetry and other tests; the filling layer of the box cover 2 comprises a cross-shaped mechanical substrate 21 corresponding to the reinforcing member 3, the mechanical substrate 21 is clamped between the inner skin 12 and the outer skin 11, and the mechanical substrate 21 is made of rock wool plates; the box cover 2 is used for closing the opening of the box body 1, and meanwhile, the box body 1 and the filling layer in the box cover 2 form a complete mechanical structure which is crisscross, so that the strengthening member 3, the strengthening side plate 31 and the mechanical substrate 21 play a main bearing role, and the whole quality of the battery box is reduced under the condition that the battery box meets the bearing capacity.
The cross-shaped mechanical support structure of the reinforcing member 3, the reinforcing side plate 31 and the mechanical substrate 21 enables the battery box to be provided with holes at any other positions, so that the influence on the mechanical property of the battery box body structure is avoided, and the reliability, the processibility and the practical application benefit of the battery box are ensured.
Four corner wrapping bottom plates 32 are respectively arranged on the periphery of the reinforcing member 3, the corner wrapping bottom plates 32 are clamped between the inner skin 12 and the outer skin 11 at the bottom of the box body 1, corner wrapping side plates 33 connected with the corner wrapping bottom plates 32 are arranged on two sides of each corner wrapping bottom plate 32, and the corner wrapping side plates 33 are correspondingly clamped between the inner skin 12 and the outer skin 11 on the side wall of the box body 1; the corner covering bottom plate 32 and the corner covering side plate 33 are both made of rock wool plates; the corner wrapping bottom sheet 32 and the corner wrapping side plates 33 are made of inorganic fibers processed by high-temperature melting, and have the characteristics of light weight, low heat conductivity coefficient and flame retardance, the corner wrapping bottom sheet 32 and the corner wrapping side plates 33 are filled in gaps of filling layers around the reinforcing member 3, the strength of four bottom corners of the box body 1 and the protection of internal batteries are enhanced simultaneously under the condition that the whole structure of the box body 1 is complete, the integral gravity of the battery box is reduced, and the use safety of the battery pack is improved.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (4)
1. The utility model provides a lightweight electric automobile battery box, includes box (1) and case lid (2) of rectangle, its characterized in that: the box body (1) and the box cover (2) are made by bonding an outer skin (11), an inner skin (12) and a filling layer between the outer skin and the inner skin, a prefabricated flanging (13) is arranged at an opening of the box body (1), a plurality of connecting holes (14) are formed in the prefabricated flanging (13), and the box cover (2) is fixed on the opening of the box body (1) through the plurality of connecting holes (14); the outer skin (11) and the inner skin (12) are both made of carbon fiber uniaxial prepreg cloth and carbon fiber plain woven prepreg cloth which are mixed, paved and cured;
the filling layer of the box body (1) comprises a cross-shaped reinforcing component (3), the reinforcing component (3) is laid between an inner skin (12) and an outer skin (11) at the bottom of the box body (1), four end parts of the reinforcing component (3) are respectively provided with a reinforcing side plate (31) which is integrally formed with the reinforcing component, and the four reinforcing side plates (31) are respectively clamped between the inner skin (12) and the outer skin (11) on the side wall of the box body (1); the reinforcing member (3) and the reinforcing side plate (31) are prepared by mixing, paving and curing carbon fiber uniaxial prepreg cloth and carbon fiber plain weave prepreg cloth.
2. The lightweight battery box for electric vehicles according to claim 1, characterized in that: four corner wrapping bottom sheets (32) are respectively arranged on the periphery of the reinforcing member (3), the corner wrapping bottom sheets (32) are clamped between an inner skin (12) and an outer skin (11) at the bottom of the box body (1), corner wrapping side plates (33) connected with the corner wrapping bottom sheets (32) are arranged on two sides of each corner wrapping bottom sheet (32), and the corner wrapping side plates (33) are correspondingly clamped between the inner skin (12) and the outer skin (11) on the side wall of the box body (1); the corner covering bottom plate (32) and the corner covering side plate (33) are both made of rock wool plates.
3. The lightweight battery box for electric vehicles according to claim 1, characterized in that: the filling layer of case lid (2) includes cross mechanical substrate (21) that correspond with reinforceing component (3), and mechanical substrate (21) press from both sides and locate between interior covering (12) and outer covering (11), mechanical substrate (21) adopt the rock wool board to make.
4. The lightweight battery box for electric vehicles according to claim 1, characterized in that: the outer skin (11) and the inner skin (12) are both made of a plurality of layers of carbon fiber uniaxial prepreg cloth which are sequentially and alternately paved, bonded and cured, and the carbon fiber plain woven prepreg cloth is adhered to the surface layers of the outer skin (11) and the inner skin (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730087.6A CN109103370B (en) | 2018-07-05 | 2018-07-05 | Lightweight battery box of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730087.6A CN109103370B (en) | 2018-07-05 | 2018-07-05 | Lightweight battery box of electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109103370A CN109103370A (en) | 2018-12-28 |
| CN109103370B true CN109103370B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810730087.6A Active CN109103370B (en) | 2018-07-05 | 2018-07-05 | Lightweight battery box of electric automobile |
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| Country | Link |
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| CN (1) | CN109103370B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839135A (en) * | 2020-06-05 | 2021-12-24 | 奥动新能源汽车科技有限公司 | Battery box and preparation method thereof |
| CN113161668A (en) * | 2021-03-09 | 2021-07-23 | 北京海纳川汽车部件股份有限公司 | Battery pack box, battery pack and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010318A (en) * | 2011-09-26 | 2013-04-03 | 蓝星(北京)化工机械有限公司 | Cold storage and thermoregulation carriage, and manufacturing method and application thereof |
| CN206490117U (en) * | 2017-02-24 | 2017-09-12 | 宁德时代新能源科技股份有限公司 | Battery case |
| CN206598716U (en) * | 2017-03-27 | 2017-10-31 | 新乡市新能电动汽车有限公司 | A kind of light-weight electric automobile battery case |
| CN107521124A (en) * | 2017-07-31 | 2017-12-29 | 江苏恒神股份有限公司 | Carbon fiber dual platen reinforced structure part and its manufacture method |
-
2018
- 2018-07-05 CN CN201810730087.6A patent/CN109103370B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010318A (en) * | 2011-09-26 | 2013-04-03 | 蓝星(北京)化工机械有限公司 | Cold storage and thermoregulation carriage, and manufacturing method and application thereof |
| CN206490117U (en) * | 2017-02-24 | 2017-09-12 | 宁德时代新能源科技股份有限公司 | Battery case |
| CN206598716U (en) * | 2017-03-27 | 2017-10-31 | 新乡市新能电动汽车有限公司 | A kind of light-weight electric automobile battery case |
| CN107521124A (en) * | 2017-07-31 | 2017-12-29 | 江苏恒神股份有限公司 | Carbon fiber dual platen reinforced structure part and its manufacture method |
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| Publication number | Publication date |
|---|---|
| CN109103370A (en) | 2018-12-28 |
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