CN208923258U - Battery pack lower case bottom plate and battery pack lower case - Google Patents
Battery pack lower case bottom plate and battery pack lower case Download PDFInfo
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- CN208923258U CN208923258U CN201822113767.1U CN201822113767U CN208923258U CN 208923258 U CN208923258 U CN 208923258U CN 201822113767 U CN201822113767 U CN 201822113767U CN 208923258 U CN208923258 U CN 208923258U
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- battery pack
- lower case
- cavity
- pack lower
- web beam
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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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Abstract
The utility model relates to Vehicular battery packet field, a kind of battery pack lower case bottom plate and battery pack lower case are disclosed.Battery pack lower case bottom plate includes plate body and the first web beam, four corner positions of plate body are fixedly installed the first web beam respectively, first web beam of one corner positions is spaced apart with the first web beam of another corner positions, first web beam extends along the plate face of plate body, and the both ends of the first web beam extend respectively to the side surface of the plate body of respective corner positions.When the outer peripheral surface of the battery pack lower case bottom plate is connected on the medial surface of battery pack lower case side bar, the end of first web beam will also be connected to the medial surface of battery pack lower case side bar, to further improve the intensity of battery pack lower case, to can effectively promote the shock resistance of battery pack housing, anti-drop ability by the battery pack lower case bottom plate, the general safety characteristic of battery pack is promoted.
Description
Technical field
The utility model relates to Vehicular battery packet technology field, in particular to a kind of battery pack lower case bottom plate and a kind of electricity
Pond packet lower case.
Background technique
With the promotion of people's quality of the life, the popularity rate of vehicle is higher and higher, meanwhile, with mentioning for environmental protection consciousness
It rises, the new-energy automobiles such as hybrid vehicle and pure electric automobile have been greatly developed.Power battery is as new energy vapour
The power resources of vehicle, the superiority and inferiority of performance are most important for the course continuation mileage of new-energy automobile and power performance
's.For example, power battery generally has large capacity, high voltage due to the demand to vehicle continual mileage, output power etc.
Characteristics such as (200V~400v), and and the energy density of power battery pack (hereinafter referred to as battery pack) is that an important performance refers to
Mark.
For the energy density for promoting battery pack, then it is more to accommodate to need the internal capacity for correspondingly expanding battery pack housing
Battery modules, this just needs to consider the light-weight design of battery pack housing.And battery pack lower case bottom plate is as bearing structure
All mould groups and electricity piece inside fixed battery pack, therefore battery pack lower case bottom plate needs to have some strength, battery pack
Web beam is provided on lower case bottom plate, and mould group is normally mounted on web beam, therefore the arrangement of web beam
Also it will have a direct impact on the safety of mould group battery core.It is connect in addition, battery pack then passes through battery pack lower case side bar with vehicle, battery pack
Lower case side bar then carries the whole packet weight of battery pack, meanwhile, battery pack is required to bear the lateral compression of such as 200KN, and
Battery pack lower case side bar is important anti-extrusion part, so battery pack lower case side bar will guarantee there is enough intensity.
Utility model content
In view of this, the utility model is directed to a kind of battery pack lower case bottom plate, to promote the anti-of battery pack housing
Impact, anti-drop ability, promote the general safety characteristic of battery pack.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of battery pack lower case bottom plate, which includes plate body and the first web beam, wherein will
The width direction of the plate body is positioned as left and right directions, and the length direction of the plate body is positioned as front-rear direction, the plate body
Four corner positions be fixedly installed first web beam respectively, described the first of a corner positions is reinforced horizontal
Beam is spaced apart with first web beam of another corner positions, first web beam along the plate body plate
Face extends, and the both ends of first web beam extend respectively to the side table of the plate body of respective corner positions
Face.
Compared with the existing technology, in the battery pack lower case bottom plate of the utility model, due to four corner locations of plate body
Place is fixedly installed the first web beam respectively, and the first web beam extends along the plate face of plate body, in this way, can be effectively
Self-strength of the plate body around the extension path of the first web beam is promoted, meanwhile, the both ends difference of the first web beam
The side surface of the plate body of respective corner positions is extended to, in this way, the outer peripheral surface in the battery pack lower case bottom plate is connected to electricity
When on the medial surface of pond packet lower case side bar, the end of the first web beam will also be connected to the inside of battery pack lower case side bar
Face, so that the intensity of battery pack lower case is further improved, thus can be effectively by the battery pack lower case bottom plate
The shock resistance of promotion battery pack housing, anti-drop ability, promote the general safety characteristic of battery pack.
Further, the tiled configuration of the first web beam at left front and right front corner position is symmetrical, after left back and right
The tiled configuration of first web beam of corner positions is symmetrical, and/or, first web beam extends to the plate body
On at least two plates, and it is connected in the plate face of at least two plates.
Further, the second web beam is provided at the preceding middle position of the plate body, at the rear middle position of the plate body
It is provided with third web beam, is provided with the 4th web beam between second web beam and the third web beam,
Wherein, second web beam, the third web beam and the 4th web beam extend along the plate face of the plate body, and
And third web beam end extends to the rear side surface of the plate body.
Further, first web beam at left front and right front corner position is wide U-shaped part, the width U-shaped part
Two short side walls extend respectively to the plate body corresponding position left and right side surface；At left back and right rear corners position
First web beam is L shape part, and the long side wall of the L shape part extends to the rear side surface of the plate body and short side wall is distinguished
Extend to the left and right side surface of the corresponding position of the plate body；Second web beam is rectangular boxes, described rectangular
A plurality of spaced apart stiffener is provided in shape box；The third web beam be narrow U-shaped part, two of the narrow U-shaped part
Long side wall extends to the rear side surface of the plate body；4th web beam is for elongate in shape and along the width of the plate body
Direction extends；And/or the plate body includes hollow space, the battery in the hollow space and on battery pack lower case bottom plate
Reinforcing rib is provided at the corresponding position of mould group installation site, the upper and lower side of the reinforcing rib is connected to the upper of hollow space
Down space wall.
In addition, the utility model provides a kind of battery pack lower case, which includes described in any of the above
Battery pack lower case bottom plate and battery pack lower case side bar, the battery pack lower case side bar include longitudinal beam body, wherein described
Longitudinal beam body surrounds the battery pack lower case backplane, and the medial surface of longitudinal beam body is fixedly connected on the electricity
The outer peripheral surface of pond packet lower case bottom plate, the both ends of first web beam extend respectively to the inside table of longitudinal beam body
Face.
Since web beam extends along battery pack lower case bottom plate plate face, in this way, can effectively be promoted under battery pack
Self-strength of the Housing Base around the extension path of web beam, so that the intensity of battery pack lower case is improved, thus
The shock resistance of battery pack housing, anti-drop ability can be effectively promoted by the battery pack lower case, promotes the whole of battery pack
Body security feature.
Further, the battery pack lower case side bar includes lateral beam body, and the transverse direction beam body is fixed at described
On the lateral surface of longitudinal beam body.
Further, longitudinally arranged multi-layer cavity is formed in the battery pack lower case side bar.
Further, the bottom cavity in cavity described in multilayer is formed as ladder cavity.
Further, longitudinal beam body includes three layers of cavity, wherein the cavity of bottom two layers is formed as trapezoidal sky
Chamber, one layer of top cavity are formed to have the polygonal-shaped cavities of straight apex cavity wall.
The transverse direction beam body includes two layers of cavity, wherein one layer of top cavity includes that the rectangle of three lateral arrangements is empty
Chamber, one layer of lower part cavity include the ladder cavity of two lateral arrangements, wherein a ladder cavity is corresponding with described in one
Rectangular cavity, so that the ladder cavity side chamber wall shared between two ladder cavities and corresponding two rectangles
The rectangular cavity side wall shared between cavity is in same plane in the height direction.
Further, the lateral cavity wall of the lateral beam body hollow cavity is fixedly connected on the lateral surface of longitudinal beam body
On position corresponding with the lateral cavity wall of longitudinal beam body hollow cavity at, and transverse chambers of the lateral beam body hollow cavity
Round-corner transition connects between wall and the lateral surface of longitudinal beam body；
And/or
The thickness of the transverse direction beam body reduces on the direction far from longitudinal beam body.
Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The exemplary embodiment and its explanation of type are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 is the battery pack lower case side of side in battery pack lower case described in specific embodiment of the present invention
The structural schematic diagram of beam；
Fig. 2 is the battery pack lower case of the other side in battery pack lower case described in specific embodiment of the present invention
The structural schematic diagram of side bar；
Fig. 3 is that the end of the battery pack lower case side bar of Fig. 2 regards structural schematic diagram；
Fig. 4 is the office of battery pack lower case bottom plate in battery pack lower case described in specific embodiment of the present invention
Portion's structural schematic diagram；
Fig. 5 is a kind of battery pack lower case bottom plate of structure type described in specific embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another battery pack lower case described in specific embodiment of the present invention, wherein
Show the battery pack lower case bottom plate of Fig. 5.
Description of symbols:
The longitudinal direction 1- beam body, 2- transverse direction beam body, 3- protrusion supporting table, 4- ladder cavity, 5- polygonal-shaped cavities, 6- hang plate,
7- rectangular cavity, 8- battery pack lower case bottom plate, 9- battery pack lower case side bar, 10- hollow space, 11- reinforcing rib, 12-
Stiffener, the first web beam of 21-, the second web beam of 22-, 23- third web beam, the 4th web beam of 24-.
Specific embodiment
It should be noted that in the absence of conflict, the spy in embodiment and embodiment in the utility model
Sign can be combined with each other.
The utility model is described in detail below with reference to the accompanying drawings and in conjunction with embodiment.
In a first aspect, the battery pack lower case bottom plate of the utility model includes plate body with reference to Fig. 5 and structure shown in fig. 6
With the first web beam 21, wherein the width direction of plate body is positioned as left and right directions, before the length direction of plate body is positioned as
Rear direction, four corner positions of plate body are fixedly installed the first web beam 21 respectively, and the first of a corner positions
Web beam 21 is spaced apart with the first web beam 21 of another corner positions, the first web beam 21 along plate body plate
Face extends, and the both ends of the first web beam 21 extend respectively to the side surface of the plate body of respective corner positions.
In the battery pack lower case bottom plate, since four corner positions of plate body are fixedly installed the first reinforcement respectively
Crossbeam 21, and the first web beam 21 extends along the plate face of plate body, reinforces cross first in this way, plate body can be promoted effectively
Self-strength around the extension path of beam 21, meanwhile, the both ends of the first web beam 21 extend respectively to respective corner position
The side surface of the plate body at place is set, in this way, the outer peripheral surface in the battery pack lower case bottom plate is connected to battery pack lower case side bar
When on medial surface, the end of the first web beam 21 will also be connected to the medial surface of battery pack lower case side bar, as shown in Figure 6
, so that the intensity of battery pack lower case is further improved, thus can be effectively by the battery pack lower case bottom plate
The shock resistance of promotion battery pack housing, anti-drop ability, promote the general safety characteristic of battery pack.
Certainly, in the battery pack lower case bottom plate, four corner positions of plate body be fixedly installed respectively first plus
Deck transverse 21 can be identical with structure, or has differences in structure, this can be according to the installation requirements of battery modules come specific
Adjustment.
For example, as shown in Figure 5 and Figure 6, the tiled configuration of the first web beam 21 at left front and right front corner position
Symmetrically, the tiled configuration of the first web beam 21 at left back and right rear corners position is symmetrical.In this way, plate body it is left front and right before
The intensity of corner positions is identical, plate body it is left back identical with intensity at right rear corners position, improve plate body self-strength
Harmony.
And/or plate body can be the complete plate of a monolith, alternatively, plate body is spliced to form by multiple plates, such as Fig. 5
With it is shown in fig. 6, at this point, the first web beam 21 extends at least two plates of plate body, and be connected at least two plates
In the plate face of part, in this way, plate reliability interconnected can be promoted significantly.
In addition, as shown in Figure 5 and Figure 6, be provided with the second web beam 22 at the preceding middle position of plate body, plate body it is rear in
It is provided with third web beam 23 at position, it is horizontal that the 4th reinforcement is provided between the second web beam 22 and third web beam 23
Beam 24, wherein the second web beam 22, third web beam 23 and the 4th web beam 24 extend along the plate face of plate body, and
And 23 end of third web beam extends to the rear side surface of plate body.In this way, passing through the second web beam 22, third web beam
23 and the 4th web beam 24, then the intensity at other positions of plate body can be effectively promoted, in this way, with four corners
One reinforcing beam 21 together, can effectively promote the integral strength of plate body.
Certainly, the first reinforcing beam 21, the second web beam 22, third web beam 23 and the 4th web beam 24 can have
Have any desired shape, for example, can be semi-toroidal shape, the utility model herein with no restrictions, for example, a kind of embodiment party
In formula, as shown in Figure 5 and Figure 6, the first web beam 21 at left front and right front corner position is the wide U-shaped part (length of bottom wall
Degree is greater than the length of the side wall of two sides), two short side walls of the wide U-shaped part extend respectively to the left and right of the corresponding position of plate body
Side surface；The first web beam 21 at left back and right rear corners position is L shape part, and the long side wall of the L shape part extends to plate body
Rear side surface and short side wall extend respectively to plate body corresponding position left and right side surface；Second web beam 22 is length
Rectangular box is provided with a plurality of spaced apart stiffener 12 in rectangular boxes；Third web beam 23 is narrow U-shaped part (bottom
The length of wall is less than the length of the side wall of two sides), two long side walls of the narrow U-shaped part extend to the rear side surface of plate body；4th
Web beam 24 is elongate in shape and extends along the width direction of plate body.
And/or as shown in Figure 4, the plate body of battery pack lower case bottom plate 8 includes hollow space 10 to realize that lightweight needs
It asks, wherein be provided at position corresponding with the battery modules installation site on battery pack lower case bottom plate in hollow space 10
Reinforcing rib 11, the upper and lower side of reinforcing rib 11 are connected to the upper down space wall of hollow space, to be used to carry battery modules weight
Amount promotes the intensity of battery pack lower case bottom plate.Certainly, as shown in Figure 4, the quantity of reinforcing rib 11 can increase according to strength demand
It adds deduct few, reduces the quantity of reinforcing rib 11 as far as possible when meeting strength demand to reach loss of weight target.
Second aspect, as shown in Figure 1, Figure 2, Fig. 3 and structure shown in fig. 6, battery pack lower case packet provided by the utility model
Battery pack lower case bottom plate 8 and battery pack lower case side bar 9 described in any of the above are included, battery pack lower case side bar 9 includes vertical
To beam body 1, wherein longitudinal beam body 1 is arranged around battery pack lower case bottom plate 8, and the medial surface of longitudinal beam body 1 is fixedly connected
In the outer peripheral surface of battery pack lower case bottom plate 8, the both ends of the first web beam 21 extend respectively to the inside table of longitudinal beam body 1
Face, for example be connected on the inner surface of longitudinal beam body 1, or the inside table of longitudinal beam body 1 is such as welded or be plugged in connection
On face.
Since the first web beam extends to along battery pack lower case bottom plate plate face the inner surface of longitudinal beam body 1, this
Sample can effectively promote self-strength of the battery pack lower case bottom plate around the extension path of the first web beam, thus
The intensity of battery pack lower case is improved, to can effectively promote the anti-impact of battery pack housing by the battery pack lower case
It hits, anti-drop ability, promotes the general safety characteristic of battery pack.
Further, battery pack lower case side bar 9 includes lateral beam body 2, and lateral beam body 2 is fixed at longitudinal beam body 1
Lateral surface on.In this way, in order to which the battery pack lower case installs positioning by lateral beam body 2.
Further, as shown in Figs. 1-3, in the such as longitudinal beam body 1 of battery pack lower case side bar 9 and/or lateral beam body 2
It is formed with longitudinally arranged multi-layer cavity, that is, is formed with multi-layer cavity along short transverse, by multi-layer cavity and respectively
The support of the cavity wall of a cavity can reduce as far as possible weight, otherwise while meeting battery pack lower case side bar intensity
Reach same intensity requirement, necessarily will increase weight, in this way, battery pack can be promoted in the case where not increasing material application
The mechanical performance of lower case reaches light-weighted it is, reducing the use of material in the case where meeting mechanical property requirements
Effect, to promote the energy density of battery pack.
In addition, as depicted in figs. 1 and 2, on the length direction of longitudinal beam body 1, multiple transverse direction beam bodies 2 can be spaced cloth
It sets on the lateral surface of longitudinal beam body 1, alternatively, the length of longitudinal beam body 1 and lateral beam body 2 can be identical, it is, transverse beam
Body 2 extends to the other end from one end of longitudinal beam body 1.
Certainly, in the battery pack lower case side bar, the shape of each cavity can have diversified forms in multi-layer cavity,
For example, can be polygonal hole or be circular hole or slotted eye.
In addition, each cavity in multi-layer cavity can only exist along the length extending direction of battery pack lower case side bar 9
Extend in a part of beam section in longitudinal beam body 1 and lateral beam body 2, alternatively, can be from longitudinal beam body 1 and the one of lateral beam body 2
End extend to the other end with formed along battery pack lower case side bar 9 length direction extension through cavity.
Further, when being mounted on vehicle due to battery pack by battery pack lower case side bar, battery pack lower case side
Beam is by by upward larger pulling force, therefore, as shown in Figure 3, at least one cavity in multi-layer cavity is formed as trapezoidal sky
Chamber 4, such as right-angled trapezium cavity.In this way, battery pack lower casing can be effectively improved due to the inclined cavity wall of ladder cavity 4
Tensile strength of the body side bar in vertical direction (up and down direction namely in the graphical interfaces of Fig. 3), improves battery involucrum
The reliability and safety of body.
Further, as shown in Figure 3, the bottom cavity in multi-layer cavity is formed as ladder cavity 4.In this way, bottom
Ladder cavity 4 closer to vehicle frame, so as to more effectively bear upward larger pulling force.
Certainly, the number of plies of multi-layer cavity can according to need to be arranged, for example, as shown in Figure 3, it is contemplated that longitudinal beam body
Need to connect battery pack lower case bottom plate and battery pack upper housing, as shown in Figure 4, the height of longitudinal beam body 1 can be higher than cross
To the height of beam body 2, therefore, in a kind of embodiment, longitudinal beam body 1 includes three layers of cavity, wherein the cavity of bottom two layers
Be formed as ladder cavity 4, one layer of top cavity is formed to have the polygonal-shaped cavities 5 of straight apex cavity wall, such as square
Shape or rectangle.And the straight apex cavity wall of the polygonal-shaped cavities 5 on top is easier to battery pack upper housing contact connectio.
In a kind of embodiment, further, as shown in Figure 3, longitudinal beam body 1 includes top rectangular cavity
With lower rectangular cavity, wherein be provided with hang plate 6 in lower rectangular cavity, hang plate 6 is connected to lower rectangular sky
Between two perpendicular walls of chamber, lower rectangular cavity is divided into two ladder cavities 4.Certainly, selectively, longitudinal beam body
1 includes top square cavities and lower part square cavities, wherein hang plate 6, hang plate are provided in the square cavities of lower part
6 are connected between two perpendicular walls of lower part square cavities, and lower part square cavities are divided into two ladder cavities 4.
In addition, since lateral beam body 2 is for being connected to vehicle frame, the number of plies of lateral 2 hollow cavity of beam body can be less than vertical
To the number of plies of 1 hollow cavity of beam body, for example, as shown in Figure 3, lateral beam body 2 includes two layers of cavity, wherein one layer of top cavity
Be formed as rectangular cavity 7, one layer of lower part cavity is formed as ladder cavity 4.
Further, in order to promote the self-strength of lateral beam body 2, one layer of top cavity includes the length of three lateral arrangements
Square cavity 7, and one layer of lower part cavity includes the ladder cavity 4 of two lateral arrangements, wherein a ladder cavity 4 corresponding one
A rectangular cavity 7, so that the ladder cavity side chamber wall shared between two ladder cavities 4 and corresponding two rectangular cavities
The rectangular cavity side wall shared between 7 is in same plane in the height direction.Specific structure as shown in Figure 3, it is clear that
This will be obviously improved the intensity of lateral beam body 2 in the height direction.
Further, as shown in Figure 3, the lateral cavity wall of lateral 2 hollow cavity of beam body is fixedly connected on the outer of longitudinal beam body 1
At position corresponding with the lateral cavity wall of longitudinal 1 hollow cavity of beam body on side, and the laterally lateral cavity wall of 2 hollow cavity of beam body
Round-corner transition is connect between the lateral surface of longitudinal beam body 1；In this way, lateral cavity wall and longitudinal direction by 2 hollow cavity of lateral beam body
This corresponding arrangement between the lateral cavity wall of 1 hollow cavity of beam body, and the lateral cavity wall and longitudinal beam of 2 hollow cavity of lateral beam body
Round-corner transition connects between the lateral surface of body 1, can conduct and dispersive stress, avoids the occurrence of stress concentration phenomenon, promotes battery
The lateral anti-pressure ability of packet lower case side bar.And/or for the ease of connecting vehicle frame and further lightweight, the thickness of lateral beam body 2
It spends on the direction far from longitudinal beam body 1 and reduces, such as is as shown in Figure 3, the following table of lateral beam body 2, which tilts upwardly, to be extended.
The above is only the better embodiments of the utility model, are not intended to limit the utility model, all in this reality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the utility model
Within protection scope.
Claims (10)
1. a kind of battery pack lower case bottom plate, which is characterized in that including plate body and the first web beam (21), wherein will be described
The width direction of plate body is positioned as left and right directions, and the length direction of the plate body is positioned as front-rear direction, and the four of the plate body
A corner positions are fixedly installed first web beam (21) respectively, and described the first of a corner positions is reinforced horizontal
Beam (21) is spaced apart with first web beam (21) of another corner positions, first web beam (21) along
The plate face of the plate body extends, and the both ends of first web beam (21) extend respectively to respective corner positions
The side surface of the plate body.
2. battery pack lower case bottom plate according to claim 1, which is characterized in that the at left front and right front corner position
The tiled configuration of one web beam (21) is symmetrical, the tiled configuration of the first web beam (21) at left back and right rear corners position
Symmetrically；
And/or
First web beam (21) extends at least two plates of the plate body, and is connected at least two plates
In plate face.
3. battery pack lower case bottom plate according to claim 1 or 2, which is characterized in that at the preceding middle position of the plate body
It is provided with the second web beam (22), is provided with third web beam (23) at the rear middle position of the plate body, described second adds
The 4th web beam (24) is provided between deck transverse (22) and the third web beam (23), wherein described second reinforces
Crossbeam (22), the third web beam (23) and the 4th web beam (24) extend along the plate face of the plate body, and institute
State the rear side surface that third web beam (23) end extends to the plate body.
4. battery pack lower case bottom plate according to claim 3, which is characterized in that the institute at left front and right front corner position
The first web beam (21) are stated as wide U-shaped part, two short side walls of the wide U-shaped part extend respectively to the corresponding position of the plate body
The left and right side surface at place；
First web beam (21) at left back and right rear corners position is L shape part, and the long side wall of the L shape part extends to institute
State the rear side surface of plate body and short side wall extend respectively to the plate body corresponding position left and right side surface；
Second web beam (22) is rectangular boxes, is provided with a plurality of spaced apart reinforcement in the rectangular boxes
Item (12)；
The third web beam (23) is narrow U-shaped part, and two long side walls of the narrow U-shaped part extend to the rear side table of the plate body
Face；
4th web beam (24) is elongate in shape and extends along the width direction of the plate body；
And/or
The plate body includes hollow space (10), the battery modules in the hollow space (10) and on battery pack lower case bottom plate
It is provided at the corresponding position of installation site reinforcing rib (11), the upper and lower side of the reinforcing rib (11) is connected to hollow space
Upper down space wall.
5. a kind of battery pack lower case, which is characterized in that including under battery pack described according to claim 1 any one of -4
Housing Base (8) and battery pack lower case side bar (9), the battery pack lower case side bar (9) include longitudinal beam body (1), wherein
The longitudinal direction beam body (1) is arranged around the battery pack lower case bottom plate (8), and the medial surface of longitudinal beam body (1) is solid
Surely it is connected to the outer peripheral surface of the battery pack lower case bottom plate (8), the both ends of first web beam (21) each extend over
To the inner surface of longitudinal beam body (1).
6. battery pack lower case according to claim 5, which is characterized in that the battery pack lower case side bar (9) includes
Lateral beam body (2), the transverse direction beam body (2) are fixed on the lateral surface of longitudinal beam body (1).
7. battery pack lower case according to claim 6, which is characterized in that shape in the battery pack lower case side bar (9)
At there is longitudinally arranged multi-layer cavity.
8. battery pack lower case according to claim 7, which is characterized in that the bottom cavity in cavity described in multilayer is formed
For ladder cavity (4).
9. battery pack lower case according to claim 8, which is characterized in that the longitudinal direction beam body (1) includes three layers of sky
Chamber, wherein the cavity of bottom two layers is formed as ladder cavity (4), and one layer of top cavity is formed to have straight apex cavity
The polygonal-shaped cavities (5) of wall, the transverse direction beam body (2) include two layers of cavity, wherein one layer of top cavity includes three lateral cloth
The rectangular cavity (7) set, one layer of lower part cavity include the ladder cavity (4) of two lateral arrangements, wherein one described trapezoidal
Cavity (4) is corresponding with the rectangular cavity (7), so that the ladder cavity shared between two ladder cavities (4)
The rectangular cavity side wall shared between side chamber wall and corresponding two rectangular cavities (7) is in same in the height direction
In one plane.
10. battery pack lower case according to claim 9, which is characterized in that the transverse direction of described transverse direction beam body (2) hollow cavity
Cavity wall is fixedly connected on the lateral cavity wall pair with described longitudinal beam body (1) hollow cavity on the lateral surface of longitudinal beam body (1)
At the position answered, and circle between the lateral cavity wall of described lateral beam body (2) hollow cavity and the lateral surface of longitudinal beam body (1)
Angle transition connection；
And/or
The thickness of the transverse direction beam body (2) reduces on the direction far from longitudinal beam body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822113767.1U CN208923258U (en) | 2018-12-14 | 2018-12-14 | Battery pack lower case bottom plate and battery pack lower case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822113767.1U CN208923258U (en) | 2018-12-14 | 2018-12-14 | Battery pack lower case bottom plate and battery pack lower case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208923258U true CN208923258U (en) | 2019-05-31 |
Family
ID=66712942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822113767.1U Active CN208923258U (en) | 2018-12-14 | 2018-12-14 | Battery pack lower case bottom plate and battery pack lower case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208923258U (en) |
-
2018
- 2018-12-14 CN CN201822113767.1U patent/CN208923258U/en active Active
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