CN109802068A - A kind of resistance to battery pack case structure for hitting puncture resistant - Google Patents
A kind of resistance to battery pack case structure for hitting puncture resistant Download PDFInfo
- Publication number
- CN109802068A CN109802068A CN201910078293.8A CN201910078293A CN109802068A CN 109802068 A CN109802068 A CN 109802068A CN 201910078293 A CN201910078293 A CN 201910078293A CN 109802068 A CN109802068 A CN 109802068A
- Authority
- CN
- China
- Prior art keywords
- component
- battery pack
- pack case
- negative poisson
- column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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 discloses a kind of resistance to battery pack case assemblies for hitting puncture resistant, including battery pack case bottom plate (1), side wall of outer shell (2), battery pack upper cover (3), end cover (5), it is characterized by: side wall of outer shell (2) and battery pack case bottom plate (1) are hollow structure, the cavity (101) of hollow structure provides space for filling interlayer.It is provided on battery pack case bottom plate (1) bed bolt hole (102), the installation of bed bolt hole (102) for battery modules and control unit is fixed；Filling interlayer has negative poisson's ratio layer core, and the connection between negative poisson's ratio layer core and cavity wall uses splicing form, and the negative poisson's ratio property of layer core (6) is formed by star structure.The application of negative poisson's ratio layer core further improves battery pack case in collision and the energy absorption characteristics in extruding in the invention, improves anticollision ability, while battery pack case being made to have certain puncture resistant ability and resistance to compression trace ability.
Description
Technical field
The present invention relates to new-energy automobile fields, more particularly to a kind of resistance to battery pack case structure for hitting puncture resistant.
Background technique
New-energy automobile has obtained the great attention of all circles due to its energy-saving and environment-friendly characteristic in recent years.Wherein, pure electric vehicle
Automobile even more achieves huge progress in terms of engineering technology and marketing as main new-energy automobile type.From
In the long run, pure electric automobile will be one of the important development direction of automotive field within the following long period, be worth investment
More, deeper into research.
In pure electric automobile, power battery pack is the main body of dynamical system, even more one of the core component of vehicle.Battery
Incrustation has fixed battery modules, protection battery core, isolation sealing, absorbs the important function such as collision energy, it is necessary to assure battery
Packet is not on fire in collision accident, does not crack, no leakage, avoids secondary injury, it is therefore desirable to carry out to battery pack case accurate
Ground design and check repeatedly.In automobile engineering and other mechanical engineering fields, in order to make structure have higher crash-worthiness and
Puncture resistant characteristic, engineers often use the sandwich structure of sandwich.There has been no by the cavity thin plate of sandwich at present
Applied to the precedent of battery pack case, especially with the negative poisson's ratio sandwich of outstanding energy absorption characteristics and deformation characteristic.In advance
The power battery incrustation for counting this negative poisson's ratio interlayer will greatly improve the collision energy-absorbing ability and puncture resistant energy of battery pack
Power is with a wide range of applications in new-energy automobile field.
Summary of the invention
The object of the present invention is to provide a kind of battery pack case, makes it while meeting general carrying demand, also have
Preferable rigidity, strength character and certain crumple energy absorption characteristics.
The present invention provides a kind of resistance to battery pack case assemblies for hitting puncture resistant, including battery pack case bottom plate, shell
Side wall, battery pack upper cover, end cover, in which: side wall of outer shell and battery pack case bottom plate are hollow structure, the sky of hollow structure
Chamber provides space for filling interlayer.Bed bolt hole is provided on battery pack case bottom plate, bed bolt hole is used for battery mould
The installation of group and control unit is fixed；Filling interlayer has negative poisson's ratio layer core, the company between negative poisson's ratio layer core and cavity wall
It connects using splicing form, the negative poisson's ratio property of layer core is formed by star structure, and star structure includes the star-shaped function in quadrangle
Component and connection column；
In 2 dimensional planes, building blocks of function include first component, second component, third component, the 4th component, the 5th component,
6th component, the 7th component and the 8th component, wherein first component and second component form an acute angle；Third component and the 4th
Component forms an acute angle；5th component and the 6th component form an acute angle；7th component and the 8th component composition one are sharp
Angle；First component and the 8th component form the obtuse angle of an indent；6th component and the 7th component form the obtuse angle of an indent；
4th component and the 5th component form the obtuse angle of an indent；Second component and third component form the obtuse angle of an indent；?
Outwardly extending first column, the second column, third column, the 4th column are provided at each obtuse angle；
Adjacent star structure is attached by the first column, the second column, third column or the 4th column, is formed in
The layer core of the negative poisson's ratio property of ordered arrangement in same plane.
The beneficial effects of the present invention are:
1. integral strength and bending resistance anti-twisting property are stronger, the bearing capacity and light weight effect of battery pack case are improved.
The bottom plate and side wall of battery pack case are made of aluminium alloy extruded moulding process, are thin wall cavity structure, and embedded in cavity
Enter negative poisson's ratio interlayer.Hollow aluminium alloy extrusions plate has higher bending resistance anti-twisting property compared to lamina design scheme,
It thus can be realized the loss of weight of battery pack assembly, lightweight performance is more excellent.
2. the sandwich structure of belt core energy absorption ability generally with higher, improves the anticollision energy of battery pack assembly
Power.In addition, the layer core with negative poisson's ratio property has better energy-absorbing effect compared to regular-type foam core.In collision process,
Under identical conquassation degree, the structure with negative poisson's ratio interlayer can absorb more energy, about 1.5 without sandwich
Times, it is 1.25 times of regular-type foam aluminium core core sandwich structure；Meanwhile impact force is more gentle in collision process, it can be effective
Improve the excessive phenomenon of instantaneous acceleration.These characteristics stress curve platform relatively high in its Collapse of Concrete, so that
Structure can more smoothly absorb more energy in collision process.
3. having certain puncture resistant ability, the airtightness of battery pack case is improved.Negative poisson's ratio material have " by
The characteristic of pressure-cross-direction shrinkage ", i.e., in local compression, material can be assembled to compression position, so to this region carried out compared with
The reinforcement of big degree.And common material, in local compression, material can be spread around, and as the load increases, pressurized zone
It will be increasingly weaker.The health of battery pack case can be thus improved in greatly degree using the layer core of negative poisson's ratio interlayer
Penetration capacity guarantees airtightness and the safety of battery pack assembly.
4. having local sag resistant and resistance to compression trace ability, the stability of battery pack case is improved.Sag resistant and resistance to compression trace
The principle of ability is identical as the puncture resistant principle: when local compression, negative poisson's ratio interlayer to depressed position assemble, to part into
Reinforcement is gone.
5. battery pack case lower case uses aluminium alloy extruded moulding process, bottom plate and side wall are the structure of thin wall hollow
Form improves bending resistance, anti-twisting property compared to lamina structure, while providing suitable space for the laying of layer core.
6. layer core is embedded in the cavity of bottom plate and side wall, a kind of sandwich structure is constituted, battery pack case is improved
Energy-absorbing, anticollision ability are capable of providing better protection to internal battery modules, ensure that battery pack assembly in collision, extruding etc.
Safety in accident.
7. negative poisson's ratio property passes through indent hexagon or three-dimensional double arrows using the froth bed core with negative poisson's ratio property
The micro-structures such as capitiform are realized.The application of negative poisson's ratio layer core further improves battery pack case in collision and the suction in extruding
Energy characteristic, improves anticollision ability, while battery pack case being made to have certain puncture resistant ability and resistance to compression trace ability.
Detailed description of the invention
Fig. 1 is battery pack case assembly structure schematic diagram；
Fig. 2 is the battery pack case cross-sectional view for being not embedded into layer core；
Fig. 3 is the battery pack case cutaway enlargement diagram with negative poisson's ratio interlayer；
Fig. 4 is star negative poisson's ratio micro-structure schematic diagram；
Fig. 5 is star negative poisson's ratio micro-structure unit cell simulation results；
Fig. 6 is micro-structure accumulation mode schematic diagram；
Fig. 7 is the stress-strain diagram contrast schematic diagram of negative poisson's ratio layer core Yu common layer core.
Wherein: 1- shell bottom plate, 2- side wall of outer shell, 3- battery pack upper cover, 4- support lifting lug, 5- end cover, in 101-
Portion's cavity, the bolt mounting holes of 102- bottom plate, 6- negative poisson's ratio layer core, the star structure function of 701~708- negative poisson's ratio unit cell
Can component, the connecting column between 801~804- negative poisson's ratio material unit cell.
Specific embodiment
Technical solution of the present invention is described in detail below in conjunction with attached drawing 1-6.
As shown in Figure 1, this embodiment offers a kind of resistance to battery pack case assemblies for hitting puncture resistant, including outside battery pack
Shell bottom plate 1, side wall of outer shell 2, battery pack upper cover 3, lifting lug 4, end cover 5 and other connectors, such as bolt.
As shown in Fig. 2, side wall of outer shell 2 and battery pack case bottom plate 1 are hollow structure, the hollow structure is shown in Fig. 2
Cavity 101.Cavity 101 provides suitable space for filling interlayer.Bed bolt hole is provided on battery pack case bottom plate 1
102, installation of the bed bolt hole 102 for battery modules and control unit is fixed.Lifting lug 4 is used between battery case and vehicle body
Connection, is attached by bolt and positioning pin.For the air-tightness and waterproofness for guaranteeing battery case, the cavity to side wall 2 is needed
It is sealed, for this purpose, the end cover 5 made of corrosion-resistant plastic or rubber is used for the sealing of side wall ends opening.Filling
Interlayer is a kind of interlayer with negative poisson's ratio property, is realized by certain micro-structure.It is subsequent to scheme more clearly to illustrate
Partial section enlarged view are provided in 3, and explain its aufbauprinciple and performance characteristics in detail in figs. 4-6.
Battery pack case bottom plate 1 and side wall of outer shell 2 are made up of aluminium alloy extruded moulding process, side wall of outer shell 2 and bottom plate
Between be attached by welding, side wall of outer shell 2 and bottom plate constitute lower box, are battery pack major bearing structures, together
When be also the main component that shields under collision or impact operating condition.
Upper cover 3 is made of aluminium alloy punch forming process, and the load of receiving is smaller, mainly seals.In battery
The cavity of incrustation bottom plate 1 and side wall of outer shell 2 is embedded in the layer core 6 of negative poisson's ratio property, and layer core 6 plays booster action, can
More energy is absorbed in an impact, and battery pack case is made to have certain puncture resistant characteristic.
Connection between negative poisson's ratio layer core and cavity wall uses splicing form, forms inside and outside wall and layer core 6 form three
Mingzhi's structure is illustrated in figure 3 the partial sectional view of the battery pack case bottom plate with negative poisson's ratio layer core.
The negative poisson's ratio property of layer core 6 passes through such as Fig. 4 and structure shown in fig. 6 and realizes, this structure is referred to as star knot
Structure.Fig. 4-a, 4-b show the unit cell for constituting this structure, i.e., the minimum unit repeated in structure, wherein three-dimensional unit cell can
It is further split into xy, the two-dimentional unit cell in tri- planes of yz, xz.
The case where for two-dimensional surface, planar unit cell shown in 4-a is regular on the direction x, z in Fig. 6, closely arranges
Column form plane 2 and tie up negative poisson's ratio structure, i.e. structure shown in 6-a.
The case where for three-dimensional space, negative poisson's ratio structure can the unit cell as shown in Fig. 4-b rule is close in the x, y, z-directions
Ground arranges to obtain, i.e. structure shown in 6-b.
For the composition and principle that unit cell is described in detail, necessary supplementary explanation is carried out by taking planar situation as an example below:
The type unit cell is made of building blocks of function 701~708 and connection 801~804 two parts of column.The building blocks of function is eight shapes
Shape size is identical or symmetrical small column entity.Wherein, first component 701, second component 702, third component the 703, the 4th
Component 704, the 5th component 705, the 6th component 706, the 7th component 707 and the 8th component 708 form a quadrangle star, therefore will
The structure is named as star structure.Wherein first component 701 and second component 702 form an acute angle；Third component 703 and
Four components 704 form an acute angle；5th component 705 and the 6th component 706 form an acute angle；7th component 707 and the 8th
Component 708 forms an acute angle；
First component 701 and the 8th component 708 form the obtuse angle of an indent；707 groups of 6th component 706 and the 7th component
At the obtuse angle of an indent；4th component 704 and the 5th component 705 form the obtuse angle of an indent；Second component 702 and third
Component 703 forms the obtuse angle of an indent.
To guarantee micro-structure in space regularly arranged, four acute angles and four obtuse angles take identical value respectively.Micro-structure
Negative poisson's ratio size determined by the two angle values, it is preferable that the present embodiment use but be not limited to following value: acute angle
20 ° are taken, obtuse angle takes 110 °.
804 4 first column 801, the second column 802, third column 803, the 4th column columns are separately fixed at described
Four obtuse angles angle point on；The effect of four columns is by the interconnection of each micro-structure unit cell, and transmission force or torque.
The present embodiment passes through the method validation of the finite element simulation Negative poisson's ratio of such star unit cell.Such as Fig. 5 institute
Show, after applying pressure on two columns of Z-direction (coordinate as shown in Figure 6), the Z-direction and X of unit cell are shunk simultaneously to size.This reality
It applies in the scheme of example, the negative poisson's ratio coefficient of micro-structure unit cell is -0.63, and Negative poisson's ratio is obvious.
Carry out the transmitting of power and torque between unit cell by the column completely.Such as layer core Z-direction be pressurized when, all Z
Compression is born to column, all X bear tensile stress to column, interlayer is finally made macroscopically to show as Z-direction and X to simultaneously
It shrinks, i.e. Negative poisson's ratio.Similarly, if applying pulling force in one party, interlayer is in Impact direction and vertical can all occur
It stretches.
The negative poisson's ratio micro-structure generallys use 3D printing technique or Shooting Technique is manufactured, in actual use, root
According to the difference of sandwich material and the difference of design requirement, moulding process is reasonably selected.
The negative poisson's ratio interlayer is embedded in the cavity of battery pack bottom plate and side plate by way of splicing, Sanming City is formed
Control structure.The battery pack case of invention has excellent energy-absorbing anti-collision ability, puncture resistant ability and local sag resistant ability, specifically
Working principle is as follows:
1. negative poisson's ratio interlayer compared to common material and regular-type foam core, has higher stress plateau in conquassation,
It is thus colliding under shock loading, more energy can be absorbed, to provide battery modules and battery pack assembly more preferable
Protection.Negative poisson's ratio material and normal cellular material are illustrated in figure 6 in Collapse of Concrete, load-deformation curve comparison.
As can be seen from the figure:
(1) the linear elasticity stage in Collapse of Concrete, the i.e. front half section of curve a, b shown in figure five, negative poisson's ratio material with
The energy absorption characteristics of normal cellular material coincide substantially, slightly below normal cellular material.
(2) stablizing the energy-absorbing stage, i.e. the stress plateau stage shown in figure five, negative poisson's ratio material is flat with higher stress
Platform, energy absorption are bigger.
(3) in the subsequent densification stage, the honeycomb of normal cellular material is gradually crushed, and primary reinforcement occurs,
Load-deformation curve mutation is shown as, a curve as shown in Figure 5 is half section right.And negative poisson's ratio material is first when being crushed
Indent hexagonal structure (or the other structures such as double-head arrow shape) is crushed, and then loses negative poisson's ratio property, at this time in material
There are still certain cavitys, are changed into normal cellular material；When continuing to be pressurized, remaining cavity is crushed, stress-strain diagram
Undergo telomutation, half section of the right side of curve b as shown in Figure 5.
This characteristic makes negative poisson's ratio material, and energy-absorbing section is relatively high in an impact, and energy absorption ability is stronger；And densification
The stage slope of curve b is relatively small, and endergonic process mitigates, and can provide better protective effect.
Negative poisson's ratio layer core in local compression, assemble to compression position by the material around pressurized zone, can be to the area
Effectively reinforced in domain.For common material when being pressurized, material is in diffusion tendency around, so that part is weakened, thus is held
Easily penetrated by foreign matter.In contrast, negative poisson's ratio material due to be pressurized when be locally reinforced, density of material, elasticity modulus and just
It spends intensity etc. to improve, it is thus possible to be reasonably resistant to puncture and impression, be conducive to the safety and stabilization that promote battery pack assembly
Property.
Claims (4)
1. a kind of resistance to battery pack case assembly for hitting puncture resistant, including battery pack case bottom plate (1), side wall of outer shell (2), battery
Wrap lid (3), end cover (5), it is characterised in that:
Side wall of outer shell (2) and battery pack case bottom plate (1) are hollow structure, and the cavity (101) of hollow structure is that filling interlayer mentions
Space is supplied.It is provided on battery pack case bottom plate (1) bed bolt hole (102), bed bolt hole (102) are used for battery modules
And the installation of control unit is fixed；Filling interlayer has negative poisson's ratio layer core, the connection between negative poisson's ratio layer core and cavity wall
Using form is glued, the negative poisson's ratio property of layer core (6) is formed by star structure, and star structure includes the star-shaped function in quadrangle
Component and connection column；
In 2 dimensional planes, building blocks of function includes first component (701), second component (702), third component (703), the 4th structure
Part (704), the 5th component (705), the 6th component (706), the 7th component (707) and the 8th component (708), wherein first component
(701) acute angle is formed with second component (702)；Third component (703) and the 4th component (704) form an acute angle；The
Five components (705) and the 6th component (706) form an acute angle；7th component (707) and the 8th component (708) composition one are sharp
Angle；First component (701) and the 8th component (708) form the obtuse angle of an indent；6th component (706) and the 7th component
(707) obtuse angle of an indent is formed；4th component (704) and the 5th component (705) form the obtuse angle of an indent；Second structure
Part (702) and third component (703) form the obtuse angle of an indent；Outwardly extending first column is provided at each obtuse angle
(801), the second column (802), third column (803), the 4th column (804)；
Adjacent star structure passes through the first column (801), the second column (802), third column (803) or the 4th column
(804) it is attached, constitutes the layer core of the negative poisson's ratio property of ordered arrangement in the same plane.
2. the resistance to battery pack case assembly for hitting puncture resistant according to claim 1, it is characterised in that: in 3 dimension spaces,
By xy in cartesian coordinate system, the two-dimentional star structure in tri- planes of yz, xz is composed three-dimensional star shape structure；Adjacent three-dimensional
Star structure is attached by column, is formed in the layer core of the negative poisson's ratio property of ordered arrangement on three directions in space.
3. the resistance to battery pack case assembly for hitting puncture resistant of one kind according to claim 1, it is characterised in that: outside battery pack
Shell bottom plate (1) and side wall of outer shell (2) are made up of aluminium alloy extruded moulding process, pass through weldering between side wall of outer shell (2) and bottom plate
The mode connect is attached, and side wall of outer shell (2) and bottom plate constitute lower box；Battery pack upper cover (3) uses aluminium alloy punch forming
Technique is made.
4. the resistance to battery pack case assembly for hitting puncture resistant of one kind according to claim 1, it is characterised in that: acute angle takes
20 °, obtuse angle takes 110 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910078293.8A CN109802068B (en) | 2019-01-28 | 2019-01-28 | Anti-collision and anti-puncture battery pack shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910078293.8A CN109802068B (en) | 2019-01-28 | 2019-01-28 | Anti-collision and anti-puncture battery pack shell structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109802068A true CN109802068A (en) | 2019-05-24 |
| CN109802068B CN109802068B (en) | 2021-11-02 |
Family
ID=66560395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910078293.8A Active CN109802068B (en) | 2019-01-28 | 2019-01-28 | Anti-collision and anti-puncture battery pack shell structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109802068B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391373A (en) * | 2019-07-15 | 2019-10-29 | 华侨大学 | A kind of novel energy-absorbing protection battery case |
| CN110553135A (en) * | 2019-09-18 | 2019-12-10 | 汕头大学 | Truss structure with adjustable mechanical property and manufacturing method thereof |
| CN111509161A (en) * | 2020-06-15 | 2020-08-07 | 华北电力大学（保定） | Anti-collision temperature control integrated battery module structure, processing device and method |
| CN113346178A (en) * | 2021-07-08 | 2021-09-03 | 哈尔滨工业大学（威海） | Power battery box for energy-absorbing anti-collision vehicle |
| CN113833792A (en) * | 2021-09-29 | 2021-12-24 | 长安大学 | Star-triangle negative Poisson ratio structure capable of self-adjusting thickness gradient |
| CN114312365A (en) * | 2021-12-14 | 2022-04-12 | 南京航空航天大学 | Reusable anti-impact module and working method |
| CN115207544A (en) * | 2022-07-20 | 2022-10-18 | 江苏科技大学 | Vibration reduction protection device for new energy automobile battery |
| US11771183B2 (en) | 2021-12-16 | 2023-10-03 | Joon Bu Park | Negative Poisson's ratio materials for fasteners |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0937578A (en) * | 1995-05-17 | 1997-02-07 | Toyota Motor Corp | Driving gear for movement |
| CN106184085A (en) * | 2016-06-30 | 2016-12-07 | 南京航空航天大学 | A kind of closed loop negative poisson's ratio construction car security system and method for designing |
| CN107276452A (en) * | 2017-06-07 | 2017-10-20 | 南京航空航天大学 | Star negative poisson's ratio structure based on dielectric type electroactive polymer |
| CN206782464U (en) * | 2017-04-17 | 2017-12-22 | 南京航空航天大学 | A kind of energy-absorbing shatter-resistant packing case based on negative poisson's ratio material |
| CN207909929U (en) * | 2017-08-29 | 2018-09-25 | 北京普莱德新能源电池科技有限公司 | A kind of power battery box of electric vehicle |
-
2019
- 2019-01-28 CN CN201910078293.8A patent/CN109802068B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0937578A (en) * | 1995-05-17 | 1997-02-07 | Toyota Motor Corp | Driving gear for movement |
| CN106184085A (en) * | 2016-06-30 | 2016-12-07 | 南京航空航天大学 | A kind of closed loop negative poisson's ratio construction car security system and method for designing |
| CN206782464U (en) * | 2017-04-17 | 2017-12-22 | 南京航空航天大学 | A kind of energy-absorbing shatter-resistant packing case based on negative poisson's ratio material |
| CN107276452A (en) * | 2017-06-07 | 2017-10-20 | 南京航空航天大学 | Star negative poisson's ratio structure based on dielectric type electroactive polymer |
| CN207909929U (en) * | 2017-08-29 | 2018-09-25 | 北京普莱德新能源电池科技有限公司 | A kind of power battery box of electric vehicle |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391373A (en) * | 2019-07-15 | 2019-10-29 | 华侨大学 | A kind of novel energy-absorbing protection battery case |
| CN110553135A (en) * | 2019-09-18 | 2019-12-10 | 汕头大学 | Truss structure with adjustable mechanical property and manufacturing method thereof |
| CN111509161A (en) * | 2020-06-15 | 2020-08-07 | 华北电力大学（保定） | Anti-collision temperature control integrated battery module structure, processing device and method |
| CN111509161B (en) * | 2020-06-15 | 2022-06-10 | 华北电力大学（保定） | Anti-collision temperature control integrated battery module structure, processing device and method |
| CN113346178A (en) * | 2021-07-08 | 2021-09-03 | 哈尔滨工业大学（威海） | Power battery box for energy-absorbing anti-collision vehicle |
| CN113833792A (en) * | 2021-09-29 | 2021-12-24 | 长安大学 | Star-triangle negative Poisson ratio structure capable of self-adjusting thickness gradient |
| CN114312365A (en) * | 2021-12-14 | 2022-04-12 | 南京航空航天大学 | Reusable anti-impact module and working method |
| US11771183B2 (en) | 2021-12-16 | 2023-10-03 | Joon Bu Park | Negative Poisson's ratio materials for fasteners |
| CN115207544A (en) * | 2022-07-20 | 2022-10-18 | 江苏科技大学 | Vibration reduction protection device for new energy automobile battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109802068B (en) | 2021-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109802068A (en) | A kind of resistance to battery pack case structure for hitting puncture resistant | |
| Zhou et al. | Mechanical performance and energy absorption properties of structures combining two Nomex honeycombs | |
| CN108082102B (en) | Negative poisson ratio structural component based on concave hexagonal unit | |
| CN210284038U (en) | Shelter with bulletproof, radar stealth and electromagnetic shielding functions | |
| US9494206B2 (en) | Vibration damping | |
| CN109094139B (en) | Novel structural honeycomb sandwich plate | |
| CN108790297A (en) | three-dimensional auxetic structure, manufacturing method and tool | |
| Yusof et al. | Design and materials development of automotive crash box: a review | |
| EP1682341B1 (en) | Improved structural sandwich plate members with forms | |
| CN107542823A (en) | A kind of pressure buffer structure | |
| CN110744873A (en) | 3D printing structure composite material sandwich board with negative Poisson ratio effect and processing method | |
| Zhao et al. | Theoretical, emulation and experimental analysis on auxetic re-entrant octagonal honeycombs and its applications on pedestrian protection of engine hood | |
| CN112550196A (en) | Multidirectional-impact-resistant honeycomb-structure buffering energy-absorbing device | |
| CN115027397A (en) | Negative poisson ratio filling inner core energy absorption box based on animal horn bionic structure | |
| CN210034261U (en) | Three-dimensional impact-resistant material with negative Poisson ratio characteristic | |
| CN110576644B (en) | Sandwich composite board | |
| Hundertmark et al. | Diatom-inspired plastic deformation elements for energy absorption in automobiles | |
| CN211251558U (en) | 3D printing structure composite material sandwich board with negative Poisson ratio effect | |
| CN112922995A (en) | Composite energy absorption structure based on negative Poisson ratio structure | |
| CN115819974B (en) | Composite material structural system with customizable mechanical properties and preparation method | |
| Mamalis et al. | Numerical modelling of the axial plastic collapse of externally grooved steel thinwalled tubes | |
| CN205836934U (en) | A kind of automobile front longitudinal beam | |
| CN210309870U (en) | Composite filling honeycomb aluminum core and automobile door adopting same | |
| Özer et al. | Investigation of the crash boxes Light weighting with syntactic foams by the finite element analysis | |
| Ehsani et al. | Application of laminated composite grids as a reinforcing element of automotive components |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A collision and puncture resistant battery pack shell structure Effective date of registration: 20230523 Granted publication date: 20211102 Pledgee: Guilin Bank Co.,Ltd. Liuzhou Branch Pledgor: AISN INNOVATIVE DESIGN AND MANUFACTURING Co.,Ltd. Registration number: Y2023980040995 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |