CN109728219A - The battery pack of vehicle - Google Patents
The battery pack of vehicle Download PDFInfo
- Publication number
- CN109728219A CN109728219A CN201811631972.5A CN201811631972A CN109728219A CN 109728219 A CN109728219 A CN 109728219A CN 201811631972 A CN201811631972 A CN 201811631972A CN 109728219 A CN109728219 A CN 109728219A
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- China
- Prior art keywords
- reinforcing beam
- mould group
- battery pack
- stiffening plate
- battery modules
- 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.)
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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
Abstract
The present invention provides a kind of battery pack of vehicle, the battery pack of vehicle includes: lower case, battery modules and reinforcing beam.The battery modules are set to the lower case, and the battery modules have mould group ontology and mould group end plate, and the mould group end plate is set at least one end of the mould group ontology；The reinforcing beam is fixed in the lower case, and the reinforcing beam is fixed with the mould group end plate, and the reinforcing beam upwardly extends and at least partly be overlapped in the short transverse of the battery modules with the mould group end plate.Thus, cooperated by lower case, battery modules and reinforcing beam, mould group end plate can be integrated with reinforcing beam, the structure of battery pack can be made more compact, reinforcement depth of beam can also be increased, so as to promote the stiffness and strength of reinforcing beam, battery pack, and, it can also make battery pack more lightweight, be conducive to the promotion of the drop weight and mass energy density of battery pack.
Description
Technical field
The present invention relates to technical field of vehicle, in particular to a kind of battery pack of vehicle.
Background technique
Lithium-ion-power cell is widely used in the various aspects of life, the important development side as the following green energy resource
Have relative to lead-acid battery, nickel-metal hydride battery, nickel-cadmium cell that higher energy density, self discharge be small, circulation to, lithium ion battery
The advantages that service life is long is currently widely used for consumer electronics field and power energy storage field.It is especially stored up in recent years in power
The application demand sharp increase in energy field, such as: electric car, large-scale energy-accumulating power station, Large-scale Mobile energy storage device etc..
In electric automobile power battery packet development process, need to meet wanting for vibration, impact, safety and reliable durable
It asks and vehicle matching is to the related request of battery pack single order basic frequency.On the whole, the reinforcing beam in the lower case of battery pack
Need good stiffness and strength, to promote whole packet single order basic frequency, guarantee power battery pack can by vibration test and
The detection of impact test.
In the related technology, battery pack is usually placed in below vehicle body, and to guarantee vehicle passage capacity, the height of battery pack can
Adjusting range is limited, or even by a recompression.In design process, in order to guarantee the stiffness and strength of reinforcing beam in lower case, just
It needs that mould group mounting rail and reinforcing beam are widened and thickeied.
Existing design method is wanted to promote the stiffness and strength of reinforcing beam in lower case, is limited to vehicle passability and wants
It asks, not can increase depth of beam (really maximally efficient method), the width and plate thickness of beam, this strengthened scheme can only be increased
Effect is poor, is unfavorable for the promotion of battery pack mechanical performance and lightweight.Also, mould group and lower case separately design, and group efficiency is poor,
It is not easy to reduce whole packet quality, whole packet mass energy density is promoted difficult.Meanwhile in order to be routed and water-cooling system, reinforcing beam meeting
It is disconnected, it will form breakpoint in main Path of Force Transfer, seriously affect the performance of structure.
Summary of the invention
In view of this, the present invention is directed to propose a kind of battery pack of vehicle, to solve the rigidity of reinforcing beam, battery pack and strong
Spend the problem of difference.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of battery pack of vehicle includes: lower case, battery modules and reinforcing beam, the battery modules be set to it is described under
Shell, the battery modules have mould group ontology and mould group end plate, and the mould group end plate is set to the mould group ontology at least
One end；The reinforcing beam is fixed in the lower case, and the reinforcing beam is fixed with the mould group end plate, and the reinforcing beam
It upwardly extends and at least partly be overlapped in the short transverse of the battery modules with the mould group end plate.
In some examples of the invention, the mould group end plate has dented space, and the reinforcing beam upwardly extends and extremely
It partially extend into the dented space.
In some examples of the invention, the mould group end plate includes: lower board unit and is arranged in upper on the lower board unit
Plate portion, the upper plate portion protrudes the lower board unit away from the direction of the battery modules, thus under the upper plate portion
The dented space is formed between the lateral surface of the square and described lower board unit.
In some examples of the invention, the lower surface of the upper plate portion is supported on the upper surface of the reinforcing beam, and institute
Stating reinforcing beam and the upper plate portion will be secured to one another by wearing the fastener of the two.
In some examples of the invention, the reinforcing beam protrudes the upper plate away from the direction of the battery modules
Portion.
In some examples of the invention, the reinforcing beam extends in the width direction of the battery modules described in protrusion
The ipsilateral side of mould group end plate.
In some examples of the invention, the thickness of the upper plate portion be greater than the lower board unit thickness, and it is described on
The medial surface in plate portion is concordant with the medial surface of the lower board unit.
In some examples of the invention, size of the upper plate portion in the short transverse of the battery modules with it is described
Size of the lower board unit in the short transverse is unanimous on the whole.
In some examples of the invention, the battery pack of the vehicle further include: stiffening plate, one end of the stiffening plate
It is connected with the lateral wall of the reinforcing beam, the other end of the stiffening plate is connected with the lower case, and the stiffening plate is provided with
Multiple first lightening holes, multiple first lightening holes run through the stiffening plate, and multiple first lightening holes are in the reinforcement
The length direction of plate is arranged and is spaced apart.
In some examples of the invention, the battery pack of the vehicle further include: stiffening plate, one end of the stiffening plate
It is connected with the lateral wall of the reinforcing beam, the other end of the stiffening plate is connected with the lower case, and the stiffening plate is provided with
Multiple first lightening holes, multiple first lightening holes run through the stiffening plate, and multiple first lightening holes are in the reinforcement
The length direction of plate is arranged and is spaced apart；The reinforcing beam is provided with multiple second lightening holes, and multiple second lightening holes pass through
Wear the reinforcing beam, multiple second lightening holes the stiffening plate length direction arrangement and be spaced apart, multiple described the
One lightening hole is arranged in a one-to-one correspondence with multiple second lightening holes.
Compared with the existing technology, the battery pack of vehicle of the present invention has the advantage that
The battery pack of vehicle according to the invention is cooperated by lower case, battery modules and reinforcing beam, can be by mould group end
Plate is integrated with reinforcing beam, and the structure of battery pack can be made more compact, can also increase reinforcement depth of beam, so as to
To promote the stiffness and strength of reinforcing beam, battery pack, also, battery pack more lightweight can also be made, be conducive to battery pack
The promotion of drop weight and mass energy density.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of battery modules described in the embodiment of the present invention；
Fig. 2 is the top view of battery modules described in the embodiment of the present invention；
Fig. 3 is the main view of battery modules described in the embodiment of the present invention；
Fig. 4 is the side view of battery modules described in the embodiment of the present invention.
Description of symbols:
Lower case 1；
Battery modules 2；Mould group ontology 21；Mould group end plate 22；Dented space 23；Lower board unit 24；Upper plate portion 25；
Reinforcing beam 3；Second lightening hole 31；
Fastener 4；
Stiffening plate 5；First lightening hole 51；
Water-cooling system 6.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As Figure 1-Figure 4, the battery pack of vehicle according to an embodiment of the present invention includes: lower case 1,2 and of battery modules
Reinforcing beam 3.Battery modules 2 can be set in lower case 1, and battery modules 2 can have mould group ontology 21 and mould group end plate 22, mould
Group end plate 22 can be set at least one end of mould group ontology 21, it should be noted that mould group end plate 22 can only be set to mould
The left end of group ontology 21, can also only be set to the right end of mould group ontology 21, can also be set to a left side for mould group ontology 21 simultaneously
End and right end.Reinforcing beam 3 can be fixed in lower case 1, and reinforcing beam 3 can be fixedly connected with mould group end plate 22, reinforcing beam 3 to
Upper extension, and reinforcing beam 3 is at least partly be overlapped in the short transverse of battery modules 2 with mould group end plate 22.
Wherein, reinforcing beam 3 is both the mounting rail of battery modules 2 and the reinforcing beam 3 of lower case 1, by reinforcing beam 3
Overlapped in the short transverse of battery modules 2 with mould group end plate 22, can reinforcing beam 3, battery modules 2 mounting rail and
Mould group end plate 22 integrates, and the structure of battery pack can be made more compact, also, since mould group end plate 22 is connect with battery core
Partial Height is constant, and setting in this way can guarantee the connection reliability of mould group end plate 22 Yu battery core, can also make the height of reinforcing beam 3
Degree is got higher, and can promote the stiffness and strength of reinforcing beam 3, battery pack, provides the anti-of abundance so as to the thermal expansion for battery core
Shield ability, meanwhile, it is overlapped by reinforcing beam 3 and mould group end plate 22, the height of mould group end plate 22 can be made to reduce, can be subtracted
The weight of small mould group end plate 22, so as to so that battery pack more lightweight, drop weight and the mass-energy for being conducive to battery pack are close
The promotion of degree.
Cooperated as a result, by lower case 1, battery modules 2 and reinforcing beam 3, mould group end plate 22 can be integrated with reinforcing beam 3
Together, the structure of battery pack can be made more compact, the height of reinforcing beam 3 can also be increased, so as to promote reinforcing beam
3, the stiffness and strength of battery pack, also, battery pack more lightweight can also be made, be conducive to the drop weight and quality energy of battery pack
The promotion of metric density.
In some embodiments of the invention, as shown in figure 3, mould group end plate 22 can have dented space 23, reinforcing beam 3
It upwardly extends, and reinforcing beam 3 extends at least partially into dented space 23, being arranged such to be the height of reinforcing beam 3
Promotion reserves space, so as to the work purpose for realizing reinforcing beam 3 and mould group end plate 22 overlaps, and then can be into one
Step promotes the height of reinforcing beam 3.
In some embodiments of the invention, as Figure 1-Figure 4, mould group end plate 22 may include: lower board unit 24 and set
The upper plate portion 25 on lower board unit 24 is set, upper plate portion 25 protrudes lower board unit 24 away from the direction of battery modules 2, needs to explain
, for being located at left side mould group end plate 22, the upper plate portion 25 positioned at left side mould group end plate 22 protrudes lower board unit 24 to the left, from
And dented space 23 can be formed between the lower section of upper plate portion 25 and the lateral surface of lower board unit 24.
In some embodiments of the invention, the lower surface of upper plate portion 25 is supported on the upper surface of reinforcing beam 3, and reinforces
Beam 3 and upper plate portion 25 will be secured to one another by wearing the fastener 4 of the two.Wherein, fastener 4 can be bolt, 3 He of reinforcing beam
Connecting hole can be set in upper plate portion 25, bolt can will add also cross the connecting hole on reinforcing beam 3 and upper plate portion 25
Brutal 3 is assembled together with upper plate portion 25.
In some embodiments of the invention, reinforcing beam 3 protrudes upper plate portion 25 away from the direction of battery modules 2, needs
It is noted that reinforcing beam 3 protrudes upper plate portion 25 to the left, wherein in electricity by taking the reinforcing beam 3 for being located at 2 left side of battery modules as an example
When core expands, battery core can be applied to 22 1 expansive forces of mould group end plate, and such setting can make the lower surface of upper plate portion 25 always
On the upper surface of reinforcing beam 3, reinforcing beam 3 can be made preferably to support upper plate portion 25, so as to so that mould group end plate 22 more
Battery core is resisted well and obtains expansive force, and then mould group end plate 22 can be prevented to be damaged.
In some embodiments of the invention, reinforcing beam 3 extends protrusion mould group end plate in the width direction of battery modules 2
22 ipsilateral side, wherein in battery core expansion, battery core can be applied to 22 1 expansive forces of mould group end plate, and setting can in this way
It is further ensured that the lower surface of upper plate portion 25 is always positioned on the upper surface of reinforcing beam 3, reinforcing beam 3 can be made preferably to support
Plate portion 25, so as to better against battery core shock loading in the front-back direction.
In some embodiments of the invention, the thickness of upper plate portion 25 is greater than the thickness of lower board unit 24, and upper plate portion 25
Medial surface it is concordant with the medial surface of lower board unit 24, the bonding strength of upper plate portion 25 Yu reinforcing beam 3 can be guaranteed by being arranged such, can
So that upper plate portion 25 connect relatively reliable with reinforcing beam 3, also, it can also make the interior of the medial surface of upper plate portion 25 and lower board unit 24
Side in a plane, mould group end plate 22 can be preferably assembled together with battery core, so as to promote battery modules 2
Structural strength.
In some embodiments of the invention, size and lower board unit of the upper plate portion 25 in the short transverse of battery modules 2
24 size in 2 short transverse of battery modules is unanimous on the whole, and setting in this way can guarantee the knot of upper plate portion 25 and lower board unit 24
Structure intensity can be broken, so as to so that the size of mould group end plate 22 is more reasonable to avoid upper plate portion 25 and lower board unit 24.
In some embodiments of the invention, as Figure 1-Figure 4, battery pack can also include: stiffening plate 5, stiffening plate 5
One end be connected with the lateral wall of reinforcing beam 3, the other end of stiffening plate 5 is connected with lower case 1, and such setting can make stiffening plate
5, lower case 1, reinforcing beam 3 surround a triangle shape chamber jointly, the structure for being able to ascend reinforcing beam 3 by the way that stiffening plate 5 is arranged
Stability, can better against battery core expansive force and in the front-back direction shock loading.
Also, multiple first lightening holes 51 have can be set in stiffening plate 5, and multiple first lightening holes 51 run through stiffening plate 5, more
A first lightening hole 51 is arranged and is spaced apart in the length direction of stiffening plate 5, wherein the shape of the first lightening hole 51 can be set
For half elliptic, setting in this way can reduce the weight of stiffening plate 5, can make battery pack more lightweight, it is also possible to protect
The arrangement for demonstrate,proving harness and water-cooling system 6 has enough spaces, and will not form breakpoint in main Path of Force Transfer, can also fill
Divide the compressive property using material, it is ensured that the rigidity and anti-bending strength of reinforcing beam 3 will not decline.
In some embodiments of the invention, as Figure 1-Figure 4, battery pack can also include: stiffening plate 5, stiffening plate 5
One end be connected with the lateral wall of reinforcing beam 3, the other end of stiffening plate 5 is connected with lower case 1, and stiffening plate 5 can be set more
A first lightening hole 51, multiple first lightening holes 51 run through stiffening plate 5, and multiple first lightening holes 51 are in the length side of stiffening plate 5
To arrangement and it is spaced apart.Multiple second lightening holes 31 have can be set in reinforcing beam 3, and multiple second lightening holes 31 run through reinforcing beam 3,
Multiple second lightening holes 31 stiffening plate 5 length direction arrangement and be spaced apart, multiple first lightening holes 51 subtract with multiple second
Repeated hole 31 is arranged in a one-to-one correspondence, wherein and the first lightening hole 51 can be correspondingly arranged in left and right directions with the second lightening hole 31, and second
The shape of lightening hole 31 can be set to half elliptic, and the weight that can reduce reinforcing beam 3 is arranged such, can further realize
The light-weight design of battery pack, it is also possible to it is further ensured that the arrangement of harness and water-cooling system 6 has enough spaces,
Breakpoint will not be formed in main Path of Force Transfer again, the compressive property of material can also be made full use of, may further ensure that and add
The rigidity and anti-bending strength of brutal 3 will not decline.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of battery pack of vehicle characterized by comprising
Lower case (1)；
Battery modules (2), the battery modules (2) are set to the lower case (1), and the battery modules (2) have mould group sheet
Body (21) and mould group end plate (22), the mould group end plate (22) are set at least one end of the mould group ontology (21)；
Reinforcing beam (3), the reinforcing beam (3) are fixed on the lower case (1), the reinforcing beam (3) and the mould group end plate
(22) fixed, and the reinforcing beam (3) upwardly extends and the height with the mould group end plate (22) in the battery modules (2)
It is at least partly overlapped on direction.
2. the battery pack of vehicle according to claim 1, which is characterized in that the mould group end plate (22) has dented space
(23), the reinforcing beam (3) upwardly extends and extends at least partially into the dented space (23).
3. the battery pack of vehicle according to claim 2, which is characterized in that the mould group end plate (22) includes: lower board unit
(24) and upper plate portion (25) on the lower board unit (24) is set, the upper plate portion (25) is away from the battery modules
(2) lower board unit (24) is protruded in direction, thus the upper plate portion (25) lower section and the lower board unit (24) it is outer
The dented space (23) are formed between side.
4. the battery pack of vehicle according to claim 3, which is characterized in that the lower surface of the upper plate portion (25) is supported on
The upper surface of the reinforcing beam (3), and the reinforcing beam (3) and the upper plate portion (25) pass through the fastener (4) for wearing the two
It will be secured to one another.
5. the battery pack of vehicle according to claim 3, which is characterized in that the reinforcing beam (3) is away from the electricity
Protrude the upper plate portion (25) in the direction of Chi Mo group (2).
6. the battery pack of vehicle according to claim 3, which is characterized in that the reinforcing beam (3) is in the battery modules
(2) extend the ipsilateral side for protruding the mould group end plate (22) in width direction.
7. the battery pack of vehicle according to claim 3, which is characterized in that the thickness of the upper plate portion (25) is greater than described
The thickness of lower board unit (24), and the medial surface of the upper plate portion (25) is concordant with the medial surface of the lower board unit (24).
8. the battery pack of vehicle according to claim 3, which is characterized in that the upper plate portion (25) is in the battery modules
(2) size in short transverse and size of the lower board unit (24) in the short transverse is unanimous on the whole.
9. the battery pack of vehicle according to claim 1, which is characterized in that further include: stiffening plate (5), the stiffening plate
(5) one end is connected with the lateral wall of the reinforcing beam (3), the other end and the lower case (1) phase of the stiffening plate (5)
Even, the stiffening plate (5) is provided with multiple first lightening holes (51), and multiple first lightening holes (51) run through the stiffening plate
(5), multiple first lightening holes (51) are arranged and are spaced apart in the length direction of the stiffening plate (5).
10. the battery pack of vehicle according to claim 1, which is characterized in that further include: stiffening plate (5), the stiffening plate
(5) one end is connected with the lateral wall of the reinforcing beam (3), the other end and the lower case (1) phase of the stiffening plate (5)
Even, the stiffening plate (5) is provided with multiple first lightening holes (51), and multiple first lightening holes (51) run through the stiffening plate
(5), multiple first lightening holes (51) are arranged and are spaced apart in the length direction of the stiffening plate (5)；
The reinforcing beam (3) is provided with multiple second lightening holes (31), and multiple second lightening holes (31) run through the reinforcement
Beam (3), multiple second lightening holes (31) the stiffening plate (5) length direction arrangement and be spaced apart, multiple described the
One lightening hole (51) is arranged in a one-to-one correspondence with multiple second lightening holes (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631972.5A CN109728219B (en) | 2018-12-29 | 2018-12-29 | Battery pack for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631972.5A CN109728219B (en) | 2018-12-29 | 2018-12-29 | Battery pack for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109728219A true CN109728219A (en) | 2019-05-07 |
| CN109728219B CN109728219B (en) | 2021-12-17 |
Family
ID=66296705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811631972.5A Active CN109728219B (en) | 2018-12-29 | 2018-12-29 | Battery pack for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109728219B (en) |
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| CN111301184A (en) * | 2020-03-20 | 2020-06-19 | 重庆长安汽车股份有限公司 | Backplate and electric automobile at bottom of carbon-fibre composite battery |
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| CN111301184A (en) * | 2020-03-20 | 2020-06-19 | 重庆长安汽车股份有限公司 | Backplate and electric automobile at bottom of carbon-fibre composite battery |
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