CN110518166A - A kind of advanced composite material (ACM) battery case body structure optimum design method - Google Patents
A kind of advanced composite material (ACM) battery case body structure optimum design method Download PDFInfo
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- CN110518166A CN110518166A CN201910796826.6A CN201910796826A CN110518166A CN 110518166 A CN110518166 A CN 110518166A CN 201910796826 A CN201910796826 A CN 201910796826A CN 110518166 A CN110518166 A CN 110518166A
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- battery case
- reinforcing rib
- acm
- composite material
- design method
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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
- 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
-
- 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 present invention provides a kind of advanced composite material (ACM) battery case body structure optimum design method, belongs to composite structure design field.In order to guarantee side crushing strength, cross-section hollow reinforcing rib is placed as structural reinforcement member in box house.In order to improve overall stiffness, resistance to deformation.The reinforcement structure of spirogyrate is provided with along four wall of cabinet.In order to improve bottom rigidity, guarantees the anti-pressure ability of bottom, be provided with netted X-shape reinforcing rib in the bottom of box.The selection of material selects carbon fiber prepreg and glass fibre prepreg to carry out whole laying design under the premise of loss of weight.The loss of weight of battery box cover.Upper cover overall thickness is H, and in order to reduce the weight, intermediate 1/3H material layer is replaced by netted chiasma type frame, guarantees the basic rigidity of upper cover.Mechanics Simulation test is carried out, in order to preferably carry out side pressure, fills up pit with light material at the pressure head extruding of side, lateral pressure distribution when guaranteeing side pressure is uniform, while improving the rigidity of side.
Description
Technical field
The present invention relates to a kind of Optimal Structure Designings of advanced composite material (ACM) light weight battery carton and crate body.Pass through reasonable selection carbon
The ratio of fiber prepreg material and glass fibre prepreg subtracts battery case under the premise of cost is relatively low and meets intensity requirement
Weight achievees the purpose that lightweight produces.Belong to composite structure design field.
Background technique
Strategic vehicle one of of the small-sized pure electric automobile as China's new-energy automobile industrialization, has obtained people increasingly
More concerns.Sole power source of the power battery as pure electric automobile plays and guarantees that battery pack is normal, key of trouble free service
Effect.Battery case carries the quality of the modules such as battery pack, therefore its intensity, rigidity must satisfy requirement and just can guarantee row
The safety sailed.Therefore the selection for rationally designing the structure and material of battery case is most important.Currently, the lightweight of battery case and
Automated production gradually obtains the attention of enterprise and society.Light-weighted battery case production requirement under the premise of meeting intensity,
Mitigate the quality of box body as far as possible.For composite material since its thermal stability is good, specific strength, specific stiffness are high, can be used for manufacturing aircraft machine
Body and satellite frame and its reinforcement structure, light-high-strength sports goods, the shell of warbird, aero-engine component etc..
Simultaneously in auto industry, since composite material has special vibration damping characteristic, damping and reduction noise, anti-fatigue performance
Good, Yi Xiuli after damage is convenient for monolithic molding, thus can be used for manufacturing body of a motor car, primary structure member, transmission shaft, engine mount and
Its internal component box.Therefore consider during designing battery case, the selection carbon fiber and glass fibre of integral material are multiple
Condensation material preparation.
Summary of the invention
Present invention aims at design a kind of novel light-weighted battery pack structure.Design includes two aspects: 1. knots
The optimization design of structure；2. the selection of fibre reinforced composites.By reasonable optimization design and selection, so that the electricity of design
Pond box carries out reasonable loss of weight under the premise of meeting integral strength, reaches light-weighted purpose.Meanwhile the structure of design is examined
Consider the feasibility of technique, is convenient for large-scale automated production.
Instead of traditional battery case.
Technical solution of the present invention:
Load-bearing part of the battery case as battery, it is most important to rationally design its structure.Pass through optimal structure model and conjunction
Reason selection guarantees the overall dimensions of battery case, side crushing strength, overall stiffness, bottom surface rigidity and the selection of material.
A kind of advanced composite material (ACM) battery case body structure optimum design method, steps are as follows:
(1) in order to guarantee side crushing strength, " returning " word is constituted in battery case cabinet wall setting cross-section hollow reinforcing rib
Type structure, as reinforcer；The wall thickness of the hollow reinforcing rib of " returning " font is equal to the side thickness of battery case, outer cross maximum packet
Network having a size of battery case total height 1/7, maximum gauge of the largest enveloping having a size of varying cross-section circumscribed circle；" returning " font is empty
Spacing between heart reinforcing rib is the width of reinforcing rib, is uniformly distributed in battery case short transverse, quantity is according to reinforcing rib
Between distribution distance determine；
(2) in order to improve overall stiffness, resistance to deformation；" bowed out " along battery case cabinet exterior setting integral structure adds certainly
Strong structure；" bowed out " is the 2/7 of battery case height from the width of reinforcement structure, and thickness is equal to 3 times of battery case side thickness；It is " outer
The quantity of arch " from reinforcement structure arrangement is 2/7 times from reinforcement structure width ratio of battery case Sidewall Height and " bowed out "；
(3) in order to improve bottom rigidity, guarantee the anti-pressure ability of bottom, add in the solid intersection of battery case bottom of box setting
Strengthening tendons；The base thickness with a thickness of battery case of reinforcing rib, the width of reinforcing rib are the 1/9 of base length, the arrangement mode of reinforcing rib
It is equal to horizontally-arranged quantity for tandem quantity, is uniformly distributed；Wherein cross/tandem reinforcing rib quantity is bottom surface side length and bottom surface reinforcing rib
1/5 times of width ratio.
Battery case tank material selects carbon fiber prepreg and glass fibre prepreg to carry out whole laying design.Inner wall
The hollow reinforcing rib of " returning " font, outer wall " bowed out " spread from reinforcement structure and bottom surface reinforcing rib using carbon fiber prepreg
It puts；Upper box lid carries out laying using glass fibre prepreg.
Upper cover overall thickness 3mm, intermediate 1mm material layer are replaced by " cross-arch " frame, guarantee the basic rigidity of upper cover；Together
When, for the ease of the connection of upper cover and box body, 8 bolts hole are made a call between upper cover and box body and are just connected.
The shape of the hollow reinforcing rib of " returning " font is square, justifies or triangle.
" bowed out " from the shape of reinforcement structure be rectangle, arc or triangle.
Beneficial effects of the present invention:
(1) when the invention structure is used for bottom surface and side static pressure, under the premise of meeting intensity, with glass fibre and carbon fiber
It ties up composite material and realizes loss of weight 40%.
(2) the structure design optimized is applicable not only to composite material, also has to the design of the contour structures of other cabinets
Certain directive significance.
(3) traditional battery case box volume is big, structure bulky.The battery case cabinet of optimization is wanted meeting battery size
Under the premise of asking, reduce the overall volume of battery case to the maximum extent, with three-dimensional mapping software and simulation software respectively into
Row three dimensional design and intensive analysis obtain optimal structure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of battery case lower box described in present example.
Fig. 2 is the structural schematic diagram of battery box cover described in present example.
Fig. 3 is the inside reinforced frame structure of battery case described in present example.
Fig. 4 is the bowed out protrusion reinforcement structure of battery case described in present example.
Fig. 5 is the connection type of battery case reinforcing frame described in present example.
Fig. 6 is that bottom surface intersects reinforcement structure in present example.
Specific embodiment
Attached drawing discloses specific structure of the invention without limitation, does to the present invention further retouch with reference to the accompanying drawing
It states.
Fig. 1,2 be battery case specific structure-battery case cabinet and upper cover.Upper cover designs reinforcing rib structure in order to reduce the weight.
Design has the internal hollow reinforcing rib of " returning " font and " bowed out " from reinforcement structure (Fig. 3,4) on the outside of battery case cabinet wall.In
Two reinforcing rib 45° angle docking are selected in the connection type of reinforcing rib, centre is connected (Fig. 5) with right angle link block.In battery case
Floor design intersection construction (Fig. 6).
(1) in order to guarantee side crushing strength, 4 cross-section hollow rectangular ribs conducts are set in battery case cabinet wall
Structural reinforcement member.The wall thickness of hollow rectangle reinforcing rib is 2mm, and outer cross section is having a size of 9mmx14mm.Compared with Filled Rectangle frame,
With under cross-section, hollow rectangle has significant advantage in loss of weight and in terms of improving rigidity compared with Filled Rectangle；4 rectangle hollow frames exist
Inside is linked to be rectangular, the pressure of evenly dispersed four side walls.Twice hollow rectangle reinforcing rib is being arranged at kernel of section, is being prevented
Only position stress is destroyed greatly very much among side.
(2) in order to improve overall stiffness, resistance to deformation.Along four wall of cabinet be provided with twice " bowed out " from reinforcement structure；
Rectangle frame is outwardly protruded from lateral plane, the width of rectangle frame is 20mm, the thickness 3mm of evagination.With individual planar side
Plate is compared, and under conditions of the side wall construction of protrusion is equal with plate wall thickness certainly, can significantly improve the rigidity of side wall.
(3) in order to improve bottom rigidity, guarantee the anti-pressure ability of bottom, reinforce in the bottom of box provided with " bowed out intersection "
Muscle.The side length of reinforcing rib is 40mm, in order to improve the compression bearing of battery case bottom surface, in the case that in bottom surface, wall thickness is constant,
" bowed out intersection " reinforcing rib is set in bottom surface, reinforcing rib connects together bottom surface, side and flange.In bottom surface when stress, pass through
Bottom surface reinforcing rib can disperse most pressure.
(4) loss of weight of battery box cover.Upper cover overall thickness 3mm, in order to reduce the weight, intermediate 1mm material layer is by " groin
Shape " frame replaces, and guarantees the basic rigidity of upper cover.Meanwhile for the ease of the connection of upper cover and box body, beaten between upper cover and box body
8 bolts hole just connect.
(6) overall structure size: whole height 158.5mm, entire length 379mm, side thickness 1.5mm, base thickness 2mm, under
Bottom surface floor thickness 1.5mm, flange thickness 3mm, outer projection 3mm.Upper cover thickness 3mm, size 379mmx379mm.
(7) Mechanics Simulation is tested, and in order to preferably carry out side pressure, fills up pit with light material at the pressure head extruding of side
Place, lateral pressure distribution when guaranteeing side pressure is uniform, while improving the rigidity of side.
(8) selection of material selects carbon fiber prepreg and glass fibre prepreg to carry out whole under the premise of loss of weight
Laying design.Crucial load position (boring rectangle reinforcing frame, side wall and bottom surface) using carbon fiber prepreg into
Row laying.Laying is carried out using glass fibre prepreg in secondary load position (upper box lid).
Claims (8)
1. a kind of advanced composite material (ACM) battery case body structure optimum design method, which is characterized in that steps are as follows:
(1) in order to guarantee side crushing strength, " returning " font knot is constituted in battery case cabinet wall setting cross-section hollow reinforcing rib
Structure, as reinforcer；The wall thickness of the hollow reinforcing rib of " returning " font is equal to the side thickness of battery case, outer cross largest enveloping ruler
Very little is the 1/7 of battery case total height, maximum gauge of the largest enveloping having a size of varying cross-section circumscribed circle；" returning " font is hollow to be added
Spacing between strengthening tendons is the width of reinforcing rib, is uniformly distributed in battery case short transverse, quantity is according between reinforcing rib
Distribution distance determine；
(2) in order to improve overall stiffness, resistance to deformation；" bowed out " along battery case cabinet exterior setting integral structure ties from reinforcement
Structure；" bowed out " is the 2/7 of battery case height from the width of reinforcement structure, and thickness is equal to 3 times of battery case side thickness；" bowed out " from
The quantity of reinforcement structure arrangement is 2/7 times from reinforcement structure width ratio of battery case Sidewall Height and " bowed out "；
(3) in order to improve bottom rigidity, guarantee the anti-pressure ability of bottom, solid intersection is set in the battery case bottom of box and is reinforced
Muscle；The base thickness with a thickness of battery case of reinforcing rib, the width of reinforcing rib are the 1/9 of base length, and the arrangement mode of reinforcing rib is
Tandem quantity is equal to horizontally-arranged quantity, is uniformly distributed；Wherein cross/tandem reinforcing rib quantity is that bottom surface side length and bottom surface reinforcing rib are wide
1/5 times for spending ratio.
2. advanced composite material (ACM) battery case body structure optimum design method according to claim 1, which is characterized in that institute
The battery case tank material stated selects carbon fiber prepreg and glass fibre prepreg to carry out whole laying design；Inner wall
The hollow reinforcing rib of " returning " font, outer wall " bowed out " spread from reinforcement structure and bottom surface reinforcing rib using carbon fiber prepreg
It puts；Upper box lid carries out laying using glass fibre prepreg.
3. advanced composite material (ACM) battery case body structure optimum design method according to claim 1 or 2, feature exist
In the battery box cover overall thickness 3mm, intermediate 1mm material layer is replaced by " cross-arch " frame, guarantees upper cover base
This rigidity；Meanwhile for the ease of upper cover and battery case connection, upper cover and battery case between make a call to 8 bolts hole and just connect
It connects.
4. advanced composite material (ACM) battery case body structure optimum design method according to claim 1 or 2, feature exist
It is square, justifies or triangle in, the shape of the hollow reinforcing rib of " returning " font.
5. advanced composite material (ACM) battery case body structure optimum design method according to claim 3, which is characterized in that institute
The shape for the hollow reinforcing rib of " returning " font stated is square, justifies or triangle.
6. according to claim 1, advanced composite material (ACM) battery case body structure optimum design method, feature described in 2 or 5 exist
In, " bowed out " from the shape of reinforcement structure be rectangle, arc or triangle.
7. advanced composite material (ACM) battery case body structure optimum design method according to claim 3, which is characterized in that institute
" bowed out " stated from the shape of reinforcement structure be rectangle, arc or triangle.
8. advanced composite material (ACM) battery case body structure optimum design method according to claim 4, which is characterized in that institute
" bowed out " stated from the shape of reinforcement structure be rectangle, arc or triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796826.6A CN110518166B (en) | 2019-08-27 | 2019-08-27 | Optimized design method for composite material battery box body structure |
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| CN201910796826.6A CN110518166B (en) | 2019-08-27 | 2019-08-27 | Optimized design method for composite material battery box body structure |
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| CN110518166B CN110518166B (en) | 2021-09-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021009178A1 (en) * | 2019-07-15 | 2021-01-21 | Muhr Und Bender Kg | Housing assembly for receiving electrical storage means |
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| GB2553537A (en) * | 2016-09-07 | 2018-03-14 | Arrival Ltd | Battery box |
| CN107946488A (en) * | 2017-11-16 | 2018-04-20 | 北京航空航天大学 | Composite material battery case and preparation process based on continuous fiber Yu long fibre hybrid design |
| CN209000992U (en) * | 2018-12-05 | 2019-06-18 | 微宏动力系统（湖州）有限公司 | A kind of battery case |
| CN209183600U (en) * | 2018-12-12 | 2019-07-30 | 福建骏龙新能源汽车制造有限公司 | A kind of high-intensitive biological steel lithium ion battery case |
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2019
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5278002A (en) * | 1992-09-22 | 1994-01-11 | Lydall, Inc. | Battery cover |
| JP2002334681A (en) * | 2001-05-02 | 2002-11-22 | Daiwa Kasei Ind Co Ltd | Battery case and its manufacturing method |
| CN104485433A (en) * | 2014-11-26 | 2015-04-01 | 绵阳宏信塑胶制品有限公司 | Lead storage battery box |
| CN205752302U (en) * | 2016-05-14 | 2016-11-30 | 中国铁塔股份有限公司大连市分公司 | A kind of anti-theft and waterproof battery flat |
| GB2553537A (en) * | 2016-09-07 | 2018-03-14 | Arrival Ltd | Battery box |
| CN206259404U (en) * | 2016-11-28 | 2017-06-16 | 北京新能源汽车股份有限公司 | Battery bag lower house and the battery bag with it |
| CN106848133A (en) * | 2017-01-23 | 2017-06-13 | 上海航秦新材料有限责任公司 | A kind of composite fireproof battery bag for electric automobile and preparation method thereof |
| CN107946488A (en) * | 2017-11-16 | 2018-04-20 | 北京航空航天大学 | Composite material battery case and preparation process based on continuous fiber Yu long fibre hybrid design |
| CN209000992U (en) * | 2018-12-05 | 2019-06-18 | 微宏动力系统（湖州）有限公司 | A kind of battery case |
| CN209183600U (en) * | 2018-12-12 | 2019-07-30 | 福建骏龙新能源汽车制造有限公司 | A kind of high-intensitive biological steel lithium ion battery case |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021009178A1 (en) * | 2019-07-15 | 2021-01-21 | Muhr Und Bender Kg | Housing assembly for receiving electrical storage means |
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| Publication number | Publication date |
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| CN110518166B (en) | 2021-09-24 |
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