CN209282267U - Battery pack lower box - Google Patents
Battery pack lower box Download PDFInfo
- Publication number
- CN209282267U CN209282267U CN201822219698.2U CN201822219698U CN209282267U CN 209282267 U CN209282267 U CN 209282267U CN 201822219698 U CN201822219698 U CN 201822219698U CN 209282267 U CN209282267 U CN 209282267U
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- CN
- China
- Prior art keywords
- lower box
- battery pack
- mounting rail
- main body
- cabinet main
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- 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
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- Battery Mounting, Suspending (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The utility model provides a kind of battery pack lower box, comprising: cabinet main body, the cabinet main body are configured to frame-shaped, and the supporting part extended to frame-shaped opening inner side is equipped in the opposite side of the cabinet main body surrounding；Mounting rail is set up in the supporting part of opposite two side of the cabinet main body.Battery pack lower box structure according to the present utility model shortens the bottom plate manufacturing cycle, simple process, cost reduces, and product base plate quality accounting reduces by optimizing floor structure.
Description
Technical field
The utility model relates to the battery pack lower box structures on battery pack lower box structure more particularly to electric car.
Background technique
Existing product in market includes: that the frame that surrounding is formed by aluminum profile welding and centre pass through welding and form aluminium
Profile bottom plate, the two form battery pack lower box by welding.
Main problem present in existing product is: (1) aluminum profile bottom plate needs to form by extrusion die, then passes through
Welding technique forms one piece of big bottom plate, and the manufacturing cycle is long, complex process, at high cost, product weight.(2) battery pack in battery pack
And related components are directly anchored on bottom plate, active force is directly transmitted on the weld seam of frame and bottom plate by bottom plate, frame with
Weld seam between bottom plate directly determines the quality of product, and when welding seam failure, product is by sync fail.
For the weld strength for meeting frame and bottom plate, high-intensitive welding procedure, such as Friction Stir Welding need to be used, by
This bring product cost is higher.
Utility model content
The purpose of the utility model is to provide a kind of battery pack lower box structures to make bottom plate system by optimizing floor structure
Cycle time, simple process are made, cost reduces, and product base plate quality accounting reduces.
One scheme of the utility model provides a kind of battery pack lower box, comprising: cabinet main body, the cabinet main body are constituted
For frame-shaped, the supporting part extended to frame-shaped opening inner side is equipped in the opposite side of the cabinet main body surrounding；Mounting rail,
The supporting part set on opposite two side of the cabinet main body.
Preferably, in above-mentioned battery pack lower box, the mounting rail is inverted T-shaped structure, at the both ends of the mounting rail
The bottom edge of inverted T-shape be engaged in the supporting part.
Preferably, in above-mentioned battery pack lower box, between opposite two side of the cabinet main body, with the peace
Dress beam is provided with reinforcing beam in parallel.
Preferably, in above-mentioned battery pack lower box, between opposite two side of the cabinet main body, with the peace
Dress beam is provided with reinforcing beam across.
Preferably, it in above-mentioned battery pack lower box, is equipped with and is used on the bottom edge of the inverted T-shaped structure of the mounting rail
The interconnecting piece of battery modules is installed.
Preferably, in above-mentioned battery pack lower box, the cabinet main body is to connect into frame-shaped by multiple mental sections, described
Supporting part is the flange of the mental section of side extended to frame-shaped opening inner side, is equipped in the cabinet main body for inciting somebody to action
Battery pack lower box is fixed on the fixed part of vehicle body.
Preferably, in above-mentioned battery pack lower box, the mental section is the aluminum profile being molded with by squeezing aluminium.
Preferably, in above-mentioned battery pack lower box, the battery pack lower box further includes box baseplate, the box baseplate
Set on the lower section of the cabinet main body, it is connected and fixed with the cabinet main body and the mounting rail.
Above-mentioned battery pack lower box structure according to the present utility model, by being set up in the opposite flank of frame-shaped cabinet main body
Mounting rail laterally or longitudinally, mounting rail and frame beam form a firm frame structure, make battery pack lower box structure can
It leans on.Moreover, avoid bottom plate from directly carrying by the way that battery pack in battery pack and related components to be fixed on mounting rail, thus
The intensity requirement for reducing floor peripheral welding, avoiding bottom plate and frame welding failure leads to the risk of battery pack failure.
Detailed description of the invention
Fig. 1 is battery pack lower box product schematic diagram.
Fig. 2 is the structure diagram of battery pack lower box surrounding frame.
Fig. 3 is the structure diagram of battery pack lower box mounting rail.
Fig. 4 is the structure diagram of the frame of battery pack lower box surrounding frame and lower box mounting rail composition.
Fig. 5 is the structure diagram of battery pack lower box bottom plate.
Fig. 6 is battery pack lower box circumferential side frame and lower box mounting rail assembling schematic diagram.
Fig. 7 is the partial enlarged view of battery pack lower box circumferential side frame Yu lower box mounting rail coupling part.
Fig. 8 is the assembling schematic diagram of battery pack lower box and battery pack.
Specific embodiment
The mode (embodiment) for implementing the utility model is described in detail with reference to attached drawing.The utility model is not
It is limited to the content recorded in the following embodiments and the accompanying drawings.In addition, including those skilled in the art's energy in the constituent element recorded below
Constituent element enough readily appreciate that and substantially the same.And it is possible to which the constituent element of following record is appropriately combined.
Only an example it should be noted that open, those skilled in the art it can be readily appreciated that, ensure utility model purport
It suitably changes and is contained in the scope of the utility model certainly.In addition, in order to more clearly be illustrated in attached drawing, with practical situation
It compares, the width of each section, thickness, shape etc. is schematically shown sometimes, but be an example eventually, be not used to limit this reality
With novel explanation.In addition, in this specification and each image, it is identical for the component described in the attached drawing about front to want
Element, marks identical appended drawing reference sometimes, suitably omits duplicate detailed description.
As shown in Figure 1, Figure 2 and shown in Fig. 8, battery pack lower box includes: the 1 (cabinet of lower box surrounding frame for being configured to frame-shaped
Main body), the continuing surface 4 (supporting part) extended to frame-shaped opening inner side is equipped in the opposite side of lower box surrounding 1 surrounding of frame；
Lower box mounting rail 2 (mounting rail) is set up in the continuing surface 4 of opposite two side of lower box surrounding frame 1.
As long as lower box surrounding frame 1 can be as the frame structure of Battery case, from light-weight, cheap
Etc. consider, be preferably stitched together by a plurality of Al squeezing material, battery pack outer framework formed by welding.It is formed in this way
The cooperation interface that is battery pack and vehicle of lower box surrounding frame 1 and battery pack and related components weight transmitting most
Whole carrier.Such lower box surrounding frame structure can effectively stop exterior object to squeeze battery pack, prevent battery pack by outer
Sharp objects thorn in portion's is touched and is failed.
Lower box surrounding frame 1 can be by the aluminum metal frame of casting, forging and molding, be also possible to meet mechanical strong
Other such as magnesium alloys, magnesium alloy metal alloy compositions of degree, technological forming and battery pack lower box performance requirement.
The continuing surface 4 of lower box surrounding frame 1 is the position for accepting lower box mounting rail 2, as shown in fig. 6, it is preferred that
It is the flange of mental section side extended to frame-shaped opening inner side, in this way when making the aluminum profile of lower box surrounding frame 1
It is formed simultaneously, simplifies manufacturing process, reduce manufacturing cost.
As shown in Fig. 1, Fig. 3 and Fig. 8, lower box mounting rail 2 is a plurality of reinforcing beam laterally or longitudinally, as lower box knot
Structure reinforcing beam connect the firm frame structure of composition with lower box surrounding frame 1, for fixing battery pack and related components,
The load from battery pack and related components is directly born, and passes to surrounding frame.Lower box mounting rail 2 is used as battery
The carrier of group route and the fixed supporting point of pipeline.
Lower box mounting rail 2 can be extrusion aluminum profile or other meet mechanical strength, moulding process and lower box performance
It is required that by squeeze out or other technological formings metal alloy compositions.
In addition, as shown in figure 3, lower box mounting rail 2 preferably uses inverted " t " character form structure, in conjunction with Fig. 6,7 it is found that nowel
The bottom edge 21 of inverted T-shape at the both ends of body mounting rail 2 is engaged in the continuing surface 4 of lower box surrounding frame 1, thus lower box four
All frames 1 are cooperated in a manner of face contact with lower box mounting rail 2 in vertical direction, by mating surface transmitting from mounting rail perpendicular
Histogram to load.As shown in figure 4, by being welded along the edge that lower box surrounding frame 1 is contacted with lower box mounting rail 2
It connects, lower box surrounding frame 1 and lower box mounting rail 2 is thus made to form an entirety.
As shown in fig. 6, the lower box surrounding frame 1 of present embodiment is tied by designing continuing surface 4 in inside by machinery
Structure come effectively accepted lower box mounting rail 2 transmitting load, avoid because weld strength it is inadequate caused by failure risk.Together
When due to reducing the requirement to weld strength by product structure design, reduce process costs.
In addition, although it is not shown, other than lower box mounting rail 2, in opposite two side of lower box surrounding frame 1
Reinforcing beam can also be set between side.Reinforcing beam can be set into parallel with lower box mounting rail 2 or intersect.Lower box mounting rail
2, which can be open the frame-shaped of lower box surrounding frame 1, is divided into multiple mounting portions for being used to load battery pack mould group etc., and reinforces
Beam can further function as the effect for reinforcing connection, improve the bearing strength of battery pack lower box entirety.The structure of reinforcing beam can
It, can be using "-" type structure, rib-like structure etc., as long as not interfering battery pack mould with different from above-mentioned lower box mounting rail 2
The installation of group etc. and the structure that connection can be reinforced.In addition, the material of reinforcing beam can select according to actual needs,
It is preferably identical as lower box mounting rail 2, for squeeze out aluminum profile or other meet mechanical strength, moulding process and lower box performance
It is required that by squeezing out or the metal alloy compositions of other technological formings, can save material in this way, reduce manufacturing cost.
In present embodiment, as shown in figs. 2 to 4, lower box surrounding frame 1 connect formation with lower box mounting rail 2 first
The frame of one rock-steady structure.Lower box mounting rail 2 passes through mechanical engagement and welding or other techniques and lower box surrounding frame 1
Connection, keeps lower box stabilized structure reliable, improves product design reliability, effectively reduces because external world's extruding leads to circumferential side frame
Deform and be expressed to the risk of internal components；
As shown in figure 8, lower box mounting rail 2 is entire electrokinetic cell system internal battery, electric, heat management system
The fixed support structure of the components such as system, battery management system, the load of bearing system inner components, while by load transmission
Lower box surrounding frame is given, avoiding traditional aluminum profile cabinet from causing using thick bottom plate, nowel weight is big, energy force density is relatively low
Problem.Traditional approach is mounted on bottom plate, and bottom plate can thicken, and it is the equal of that part is thicker rather than whole that part, which increases mounting rail,
Body thickeies.
In addition, installing lower box bottom plate 3 further preferably in the battery pack lower box of present embodiment to form battery
Packet lower box, for the components such as electrokinetic cell system battery pack, electric, heat management system, battery management system carrying,
Assemble fixation, protection and vehicle assembly connection etc..
As shown in Fig. 1, Fig. 5 and Fig. 8, battery pack lower box further includes lower box bottom plate 3 (box baseplate), lower box bottom plate
3 are set to the lower section of lower box surrounding frame 1, are connected and fixed with lower box surrounding frame 1 and lower box mounting rail 2.Lower box bottom
Plate 3 is formed by aluminium plate by cutting or other processing methods, with lower box surrounding frame 1 and lower box mounting rail 2 together group
At semi-enclosed body structure.Lower box bottom plate 3 and lower box surrounding frame 1 can form case by welding or other techniques
Body, meets requirement of the battery pack protection to cabinet, and lower box bottom plate 3 and lower box mounting rail 2 can pass through welding or other works
Skill connection, it is possible thereby to support force is passed to battery system liquid cooling interface by elastic support structure, thus make battery pack with
Liquid cooling interfacial contact is good, and heat exchange efficiency greatly improves.
Lower box bottom plate 3 can be aluminium alloy or other satisfactions pass through with lower box surrounding frame 1 and lower box mounting rail 2
Weld or rivet the metal alloy compositions to form semiclosed cabinet.
As shown in figure 5, the shape of preferably lower box bottom plate 3 is consistent with the frame that lower box surrounding frame 1 is formed, bottom plate
Edge and base of frame medial surface pass through welding one closed cabinet of formation.The bottom of lower box bottom plate 3 and lower box mounting rail 2
Face contact cooperation in portion's carries out local welding reinforcing by the edge of the lower box mounting rail 2 after cooperation, under being effectively ensured entirely
The solid and reliable property of cabinet controls bottom plate due to the deflection in self weight and motion process.
As shown in Fig. 1, Fig. 8, lower box bottom plate 3 is connect with lower box surrounding frame 1 and lower box mounting rail 2, to battery
Internal system components carry out effective protection, while forming effective support to battery system heat management system liquid cooling plate,
It contacts liquid cooling plate effectively with battery pack heat exchange interface, substantially increases heat management efficiency.The utility model uses sheet metal forming
Or the molding lower box bottom plate of other processing methods, avoid conventional backplane from needing by squeezing out, processing, splice the type that is welded
Mode greatly reduces design cost, die cost and process-cycle, while also effectively reducing the weight of lower box, improves
The energy force density of battery pack.
The battery pack internal structure of the utility model design is as shown in figure 8, include battery pack lower box and battery modules 6.
Battery pack lower box is implemented using scheme described in the utility model, i.e., by lower box surrounding frame 1, the lower box installation of 6, middle part
Beam 2 and lower box bottom plate 3 form, and lower box surrounding frame 1 meets vertical direction by mechanical structure with lower box mounting rail 2 and matches
It closes, welding procedure reinforces connection, the welded connecting of lower box mounting rail 2 of lower box bottom plate 3 and lower box surrounding frame 1, middle part.
Battery modules are 355 general battery modules of market.
Can be according to the battery pack rectangle external envelope structure, while considering that battery modules size is arranged, preferably
Mounting rail lateral arrangement is reinforced in selection.In present embodiment shown in Fig. 1, since longitudinal size is smaller, while space is considered
Layout Problem, diagram without increasing longitudinally reinforced beam, but can be according to vehicle, vehicle inner space, battery pack when practical application
It is required that etc. and design laterally, longitudinally reinforced beam etc..
As shown in figure 8, battery pack is using two layers of battery modules arrangement, lower layer's battery modules longitudinal direction cloth in present embodiment
It sets, installation point is on lower box mounting rail 2.It is arranged and is required according to battery pack, battery modules length direction has the gap 20mm, this reality
Lower box mounting rail 2 used in mode is applied to be efficiently used the space behind the installation gap of reserved battery pack assembling,
For enhancing 2 structure of lower box mounting rail, as shown in figure 3, lower box mounting rail 2 uses inverted " t " character form structure, thus, it is possible to
It is enough more compactly to install, make full use of space.
As shown in figure 8, arrange general 355 battery modules in 28 groups of markets in present embodiment, gross weight can arrive 340kg with
On.For the connection reliability for ensuring lower box mounting rail 2 Yu lower box surrounding frame 1, lower box mounting rail 2 and lower box surrounding
Mechanical engagement structure is used between frame 1 first, as shown in fig. 6, designing raised support framework on the inside of lower box surrounding frame 1, is used
In carrying lower box mounting rail 2 in the load of vertical direction, then splice in lower box mounting rail 2 and lower box surrounding frame 1
Position is welded to connect using welding procedure, becomes an entirety.
As shown in Figure 5, Figure 8, to meet box sealing requirement of shelter, while considering cabinet lightweight requirements, lower box bottom
Plate 3 is spliced into a complete cabinet using welding procedure with lower box surrounding frame 1 using the aluminium sheet of thickness 2.5mm；It is simultaneously
Meet and effect support is formed with to meet good heat exchange efficiency to mould group bottom plate water-cooled plate, synchronizes and take into account cost problem, preferably
Splice interface in lower box mounting rail 2 and lower box bottom plate 3 and carries out local welding reinforcing.
In addition, as shown in Figure 1, being additionally provided in lower box surrounding frame 1 for the fixed part 5 fixed with vehicle.
In present embodiment, battery pack uses mounting rail, stabilized structure and is unlikely to deform.Bottom cell mould group is fixed on
On mounting rail, weight is transferred on surrounding frame by mounting rail, reduces bottom plate load-bearing requirements, reduces floor peripheral welding
Intensity requirement, avoid bottom plate and frame welding failure cause battery pack fail risk.Although the battery pack increases peace
Beam is filled, but uses simple thin bottom plate, battery pack lower box gross mass is significantly reduced, reduces and the technique of bottom plate is wanted
It asks.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Member can make numerous variations or be repaired to these embodiments under the premise of without departing substantially from the principles of the present invention and essence
Change, and these change and modification each fall within the protection scope of the utility model.
Claims (8)
1. a kind of battery pack lower box characterized by comprising
Cabinet main body, the cabinet main body are configured to frame-shaped, are equipped in the opposite side of the cabinet main body surrounding to frame-shaped and open
The supporting part extended on the inside of mouthful；
Mounting rail is set up in the supporting part of opposite two side of the cabinet main body.
2. battery pack lower box according to claim 1, which is characterized in that
The mounting rail is inverted T-shaped structure, and the bottom edge of the inverted T-shape at the both ends of the mounting rail is engaged in the bearing
Portion.
3. battery pack lower box according to claim 2, which is characterized in that
Between opposite two side of the cabinet main body, it is provided with reinforcing beam in parallel with the mounting rail.
4. battery pack lower box according to claim 2, which is characterized in that
Between opposite two side of the cabinet main body, it is provided with reinforcing beam across with the mounting rail.
5. battery pack lower box according to claim 2, which is characterized in that
The interconnecting piece for installing battery modules is equipped on the bottom edge of the inverted T-shaped structure of the mounting rail.
6. battery pack lower box according to any one of claims 1 to 5, which is characterized in that
The cabinet main body is that frame-shaped is connected by multiple mental sections, the supporting part be the mental section of side to
The flange that frame-shaped opening inner side extends is equipped with the fixation for battery pack lower box to be fixed on to vehicle body in the cabinet main body
Portion.
7. battery pack lower box according to claim 6, which is characterized in that
The mental section is the aluminum profile being molded with by squeezing aluminium.
8. battery pack lower box according to claim 7, which is characterized in that
The battery pack lower box further includes box baseplate, and the box baseplate is set to the lower section of the cabinet main body, and described
Cabinet main body and the mounting rail are connected and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822219698.2U CN209282267U (en) | 2018-12-27 | 2018-12-27 | Battery pack lower box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822219698.2U CN209282267U (en) | 2018-12-27 | 2018-12-27 | Battery pack lower box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209282267U true CN209282267U (en) | 2019-08-20 |
Family
ID=67607434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822219698.2U Active CN209282267U (en) | 2018-12-27 | 2018-12-27 | Battery pack lower box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209282267U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518172A (en) * | 2019-09-30 | 2019-11-29 | 江西优特汽车技术有限公司 | A kind of lightweight aluminum profile body structure |
| WO2021083062A1 (en) * | 2019-10-31 | 2021-05-06 | 宁德时代新能源科技股份有限公司 | Battery pack lower box body, battery pack, device, and assembling method for battery pack lower box body |
| CN114069143A (en) * | 2021-11-19 | 2022-02-18 | 重庆仟和镁业科技有限公司 | Magnesium alloy battery box for medium and large-sized vehicles and manufacturing method thereof |
| CN114784354A (en) * | 2022-04-11 | 2022-07-22 | 中创新航科技股份有限公司 | Battery device, assembly method and assembly equipment thereof, and battery assembly positioning tool |
-
2018
- 2018-12-27 CN CN201822219698.2U patent/CN209282267U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518172A (en) * | 2019-09-30 | 2019-11-29 | 江西优特汽车技术有限公司 | A kind of lightweight aluminum profile body structure |
| WO2021083062A1 (en) * | 2019-10-31 | 2021-05-06 | 宁德时代新能源科技股份有限公司 | Battery pack lower box body, battery pack, device, and assembling method for battery pack lower box body |
| CN114069143A (en) * | 2021-11-19 | 2022-02-18 | 重庆仟和镁业科技有限公司 | Magnesium alloy battery box for medium and large-sized vehicles and manufacturing method thereof |
| CN114069143B (en) * | 2021-11-19 | 2024-02-09 | 重庆仟和镁业科技有限公司 | Magnesium alloy battery box for medium and large-sized vehicles and manufacturing method thereof |
| CN114784354A (en) * | 2022-04-11 | 2022-07-22 | 中创新航科技股份有限公司 | Battery device, assembly method and assembly equipment thereof, and battery assembly positioning tool |
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