CN220753645U - Protective plate structure at bottom of power battery package - Google Patents
Protective plate structure at bottom of power battery package Download PDFInfo
- Publication number
- CN220753645U CN220753645U CN202322467555.4U CN202322467555U CN220753645U CN 220753645 U CN220753645 U CN 220753645U CN 202322467555 U CN202322467555 U CN 202322467555U CN 220753645 U CN220753645 U CN 220753645U
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- Prior art keywords
- bottom plate
- plate
- power battery
- reinforcement
- convex ribs
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- 230000001681 protective effect Effects 0.000 title description 2
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 48
- 230000002787 reinforcement Effects 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 21
- 238000005192 partition Methods 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 8
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 description 10
- 239000000306 component Substances 0.000 description 7
- 239000008358 core component Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a power battery package bottom guard plate structure, which comprises: a bottom plate provided with a plurality of mounting holes at intervals along the circumferential direction; the convex ribs are arranged at intervals along the length direction of the bottom plate, and any convex rib is fixed on the bottom plate and forms a horizontally arranged installation plane above the bottom plate; the plurality of reinforcing pieces are arranged at intervals along the length direction of the bottom plate, any one reinforcing piece is arranged between two adjacent convex ribs along the width direction of the bottom plate, the reinforcing piece is of a door-shaped frame structure, and the bottom ends of the vertical parts on two sides of the reinforcing piece extend along the horizontal direction towards the adjacent convex ribs and are fixed on the bottom plate; wherein, the tip and the lower box curb plate cooperation butt of reinforcement. According to the utility model, the strength of the bottom guard plate is improved in a targeted manner by sequentially and alternately arranging the convex ribs and the reinforcing pieces on the bottom plate, so that the bottom guard plate can better adapt to more complex working environments, the working stability and the safety of the power battery are ensured, and the safety performance of the whole vehicle is improved.
Description
Technical Field
The utility model relates to the technical field of power battery box structures. More particularly, the present utility model relates to a power cell package bottom guard plate structure.
Background
At present, with the continuous development of new energy industry and technology, the electric vehicle is more and more widely applied, and as a core power element of the electric vehicle, the structural safety of a power battery pack is an important factor affecting the safety coefficient of the whole vehicle. In the existing battery pack structure, the bottom guard plate of the battery pack box body is generally formed by a common sheet metal structure, no special reinforcing structure is designed, so that the structural strength of the battery pack bottom guard plate is low, puncture resistance is weak, the power battery pack is generally arranged at the bottom of an automobile chassis, in practical application, the ball striking resistance of the bottom guard plate is poor, reliable and effective protection cannot be effectively provided for an internal module of the battery pack, and particularly, the safety performance of the whole automobile is adversely affected under complex road conditions.
In order to solve the above problems, it is necessary to design a bottom guard plate structure of a power battery pack, and improve the strength of the bottom guard plate to ensure the working stability and safety of the power battery.
Disclosure of Invention
The utility model aims to provide a bottom guard plate structure of a power battery pack, which can improve the strength of the bottom guard plate in a targeted manner by sequentially and alternately adding a plurality of convex ribs and reinforcing pieces on a bottom plate, so that the bottom guard plate structure can better adapt to more complex working environments, and ensure the working stability and the safety of the power battery, thereby improving the safety performance of the whole vehicle.
To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a power battery pack bottom guard plate structure comprising:
the bottom plate is adapted to the bottom design structure of the lower box body, and a plurality of mounting holes are formed in the bottom plate at intervals along the circumferential direction;
the convex ribs are arranged at intervals along the length direction of the bottom plate, and any convex rib is fixed on the bottom plate and forms a horizontally arranged installation plane above the convex ribs;
the plurality of reinforcing pieces are arranged at intervals along the length direction of the bottom plate, any one reinforcing piece is arranged between two adjacent convex ribs along the width direction of the bottom plate, the reinforcing piece is of a door-shaped frame structure, and the bottom ends of the vertical parts on two sides of the reinforcing piece extend along the horizontal direction towards the adjacent convex ribs and are fixed on the bottom plate;
after the lower box side plate is connected with the mounting hole on the bottom plate through the connecting piece, the end part of the reinforcing piece is matched and abutted with the lower box side plate.
Preferably, the bottom plate of the power battery pack bottom guard plate structure is made of ultra-high strength steel plates.
Preferably, the power battery package bottom guard plate structure, any protruding muscle includes a plurality of protruding muscle units, and it is followed the width direction interval setting of bottom plate, any protruding muscle unit is square prismatic table structure.
Preferably, the power battery package bottom guard plate structure, the top surface of the reinforcement is provided with a plurality of perforations, the perforations are arranged at intervals along the length direction of the reinforcement, and any perforation penetrates through the horizontal part of the reinforcement along the vertical direction.
Preferably, the thickness of the reinforcement member is smaller than the thickness of the rib.
Preferably, the power battery pack bottom guard plate structure further comprises an additional reinforcing member, wherein the additional reinforcing member is arranged between the lower box body partition plate and the adjacent convex ribs, and the additional reinforcing member is fixed on the bottom plate and has the same structure as the reinforcing member.
The utility model at least comprises the following beneficial effects:
according to the utility model, the strength of the bottom guard plate is improved in a targeted manner by sequentially and alternately arranging the convex ribs and the reinforcing pieces on the bottom plate, so that not only is the ball striking resistance of the bottom of the whole power battery pack box body enhanced, but also the extrusion resistance of the box body in the Y direction is remarkably improved, the power battery can be better adapted to a more complex working environment, the working stability and the safety of the power battery are ensured, and the safety performance of the whole vehicle is further improved.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a schematic view showing the overall structure of a bottom guard plate structure of a power battery pack according to an embodiment of the present utility model;
FIG. 2 is a schematic plan view of the connection between the bottom plate and the ribs in the above embodiment;
FIG. 3 is a schematic front elevational view of the connection between the bottom plate and the ribs in the above embodiment;
FIG. 4 is a schematic side elevation of the connection of the bottom plate and the ribs in the embodiment;
FIG. 5 is a schematic plan view of the reinforcement member according to the embodiment;
FIG. 6 is a schematic front elevational view of the reinforcement member according to the above embodiment;
fig. 7 is a schematic view of the installation structure of the bottom guard plate structure of the power battery pack according to the above embodiment.
Reference numerals illustrate:
10. a bottom plate; 11. convex ribs; 12. a mounting hole; 20. a reinforcing member; 21. perforating; 30. a lower box side plate; 31. and a lower box partition board.
Detailed Description
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are all conventional methods, and the reagents and materials, unless otherwise specified, are all commercially available; in the description of the present utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.
As shown in fig. 1 to 7, the present utility model provides a power battery pack bottom guard plate structure, comprising:
the bottom plate 10 is adapted to the bottom design structure of the lower box body, and a plurality of mounting holes 12 are formed in the bottom plate 10 at intervals along the circumferential direction;
a plurality of ribs 11 arranged at intervals along the length direction of the base plate 10, any one of the ribs 11 being fixed on the base plate 10 and forming a horizontally arranged mounting plane thereon;
the plurality of reinforcing members 20 are arranged at intervals along the length direction of the bottom plate 10, any reinforcing member 20 is arranged between two adjacent ribs 11 along the width direction of the bottom plate, the reinforcing member 20 is of a door-shaped frame structure, and the bottom ends of the vertical parts on two sides of the reinforcing member extend along the horizontal direction towards the adjacent ribs 11 and are fixed on the bottom plate 10;
after the lower box side plate 30 is connected with the mounting hole 12 on the bottom plate through the connecting piece, the end of the reinforcing piece 20 is matched and abutted with the lower box side plate 30.
In the above technical solution, the lower box side plate 30 is continuously disposed along the circumferential direction of the bottom plate according to the design requirement, and the lower box side plate 30 after the installation is fixed at the top of the bottom plate 10 and forms an installation space with an open top. After the connection of the bottom plate and the side plate is completed, the installation space is divided into a power battery core component (power element such as a battery module) installation bin and an accessory component (control element such as a BMS (battery module) and relay) installation bin by a lower box partition plate 31 in the installation space, the shape and the size of the bottom plate are required to be designed according to the whole bottom structure of the lower box (namely, the range of the two installation bins is required to be covered), and the convex ribs and the reinforcing ribs are correspondingly arranged in the range of the bottom plate corresponding to the position of the power battery core component installation bin.
Specifically, the battery module (power battery core component) can be correspondingly installed on an installation plane formed by the convex ribs, the convex ribs are of a solid platform structure, and the positions, corresponding to the power battery core component, in the bottom guard plate are thickened in a targeted manner by arranging the convex ribs on the bottom plate, so that the protection of the bottom guard plate to the power battery component in the box body is enhanced. The reinforcing piece is of a hollow structure arranged between adjacent convex ribs, and the horizontal part and the vertical parts on two sides of the reinforcing piece form a hollow bulge on the bottom plate together, so that the reinforcing piece can effectively buffer external impact from the lower part of the bottom guard plate, and is beneficial to heat dissipation in the box body; in addition, the tip of reinforcement extends to the position that is close to the bottom plate edge, after lower box curb plate installation is accomplished, the both ends of reinforcement respectively with adjacent lower box curb plate cooperation butt to, guaranteed the wholeness and the stability that end backplate and box curb plate are connected, effectively promoted the anti extrusion performance of battery package box in Y direction (bottom plate width direction) simultaneously, the structural deformation of prevention box under abominable operational environment that can be better guarantees power battery job stabilization nature and security. The reinforcement and protruding muscle structure cooperation can regard as the reinforcing structure to improve the puncture-proof of end backplate structure jointly on the one hand, and on the other hand, the reinforcement sets up in the space between adjacent protruding muscle, does not need additionally to occupy the installation space in the battery package box to on the basis of guaranteeing end backplate guard strength through protruding muscle structure, reduced the overall weight of reinforcing structure (protruding muscle + reinforcement) as far as, avoided end backplate weight too big influence power battery package's overall structure design (lightweight design requirement).
According to the utility model, the strength of the bottom guard plate is improved in a targeted manner by sequentially and alternately arranging the convex ribs and the reinforcing pieces on the bottom plate, so that the bottom ball striking resistance of the whole power battery pack box body is enhanced, the extrusion resistance of the box body in the Y direction is obviously improved, the power battery can be better adapted to a more complex working environment, the working stability and the safety of the power battery are ensured, the safety of the whole vehicle is further improved, and the power battery pack box body has a good application prospect.
In another embodiment, the bottom plate 10 is made of ultra-high strength steel plate.
Wherein, according to the definition of ULSAB structure for high-strength steel plate, ultra-high-strength steel plate (UHSS) is steel plate with yield strength of more than 550 MPa. In the embodiment, the bottom plate is made of 1500 Mpa-grade 22MnB5 steel, and is formed by hot stamping, so that the thickness of the steel plate is 0.8mm. Adopt the foundation structure (bottom plate) of backplate at bottom of the superhigh strength steel sheet is wrapped as power battery, structural strength and the anti ball striking ability of assurance bottom plate that can be better to, in practical application, the external impact force under the complex road conditions of reply that can be better avoids causing damage or destruction to the power battery subassembly of box inside.
In another technical scheme, the power battery pack bottom guard plate structure, any protruding rib 11 comprises a plurality of protruding rib units, the protruding rib units are arranged at intervals along the width direction of the bottom plate, and any protruding rib unit is of a square prismatic table structure. The number of the convex rib units can be determined according to the internal design structure of the power battery pack, and the adjacent convex rib unit intervals can facilitate the installation of wiring in the box body or other auxiliary structures in other battery packs. In this embodiment, the same bead includes two bead units. Any protruding muscle unit has certain length, width and thickness to form horizontal installation plane at the top, protruding muscle unit's vertical cross-section is the trapezium structure of upper and lower width, can optimize the atress structure when guaranteeing protruding muscle and bottom plate connection stability, realizes the stable, the reliable support to battery major structure (battery module etc.) in the box.
In another aspect, in the power battery pack bottom guard plate structure, the top surface of the reinforcing member 20 is provided with a plurality of through holes 21, which are spaced along the length direction of the reinforcing member 20, and any through hole 21 penetrates through the horizontal portion of the reinforcing member in the vertical direction. Specifically, the perforation is the square hole that suits with the horizontal part shape of reinforcement, setting direction, and its inside and outside space of intercommunication reinforcement to the structure weight of reinforcement has further been alleviateed on guaranteeing the reinforcement to the backplate reinforcing effect of end, is favorable to accelerating the heat dissipation of subassembly in the box simultaneously.
In another aspect, in the power battery pack bottom guard plate structure, the thickness of the reinforcing member 20 is smaller than the thickness of the rib 11. The reinforcing piece is arranged between the adjacent convex ribs, and naturally separates the installation planes on the convex ribs when the power battery components are installed in the box body, so that the power battery components can be positioned and installed conveniently; in addition, the thickness of the reinforcing piece is smaller than that of the convex rib, so that interference caused by installation of the power battery assembly above can be effectively avoided. In this embodiment, the thickness of the reinforcement is 0.5mm, and the reinforcement is fixedly connected with the bottom plate by means of laser splice welding (the portion extending horizontally outwards from the bottom ends of the vertical portions on both sides of the reinforcement is bonded and welded on the bottom plate).
In another aspect, the power battery pack bottom guard plate structure further includes an additional reinforcement member disposed between the lower case partition 31 and the rib 11 adjacent thereto, and the additional reinforcement member is fixed to the bottom plate 10 and has the same structure as the reinforcement member 20. In the above technical scheme, on the basis that the installation space of the power battery core component and the accessory component is partitioned by the lower box partition plate 31 which is vertically arranged, an additional reinforcing piece is arranged between the partition plate and the adjacent convex rib, so that the convex rib closest to the lower box partition plate is further away from the partition plate, and therefore the power battery core component and the accessory component have enough intervals, and the mutual influence in the working is avoided. Meanwhile, the structure of the additional reinforcing piece is identical with that of the reinforcing piece, the additional reinforcing piece is continuously arranged along the width direction of the bottom plate, the end part of the additional reinforcing piece is abutted against the side plate of the lower box body, a more stable reinforcing structure can be formed around the whole length direction of the partition plate of the lower box body, and the structure strength and the stability of the box body on one side, close to the installation bin of the accessory component, of the bottom protection plate can be guaranteed.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. A power battery package end backplate structure, characterized in that includes:
the bottom plate is adapted to the bottom design structure of the lower box body, and a plurality of mounting holes are formed in the bottom plate at intervals along the circumferential direction;
the convex ribs are arranged at intervals along the length direction of the bottom plate, and any convex rib is fixed on the bottom plate and forms a horizontally arranged installation plane above the convex ribs;
the plurality of reinforcing pieces are arranged at intervals along the length direction of the bottom plate, any one reinforcing piece is arranged between two adjacent convex ribs along the width direction of the bottom plate, the reinforcing piece is of a door-shaped frame structure, and the bottom ends of the vertical parts on two sides of the reinforcing piece extend along the horizontal direction towards the adjacent convex ribs and are fixed on the bottom plate;
after the lower box side plate is connected with the mounting hole on the bottom plate through the connecting piece, the end part of the reinforcing piece is matched and abutted with the lower box side plate.
2. The power cell pack bottom guard plate structure of claim 1, wherein the bottom plate is an ultra-high strength steel plate.
3. The power cell pack bottom guard plate structure of claim 1, wherein any one of the ribs comprises a plurality of rib units arranged at intervals along the width direction of the bottom plate, and any one of the rib units is a square pyramid structure.
4. The power battery pack bottom guard plate structure of claim 1, wherein the top surface of the reinforcement is provided with a plurality of perforations arranged at intervals along the length direction of the reinforcement, and any perforation penetrates through the horizontal portion of the reinforcement in the vertical direction.
5. The power cell pack bottom guard plate structure of claim 1, wherein the thickness of the reinforcement is less than the thickness of the bead.
6. The power cell pack bottom guard plate structure of claim 1, further comprising an additional reinforcement provided between the lower case partition plate and the ribs adjacent thereto, the additional reinforcement being fixed to the bottom plate and having the same structure as the reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322467555.4U CN220753645U (en) | 2023-09-12 | 2023-09-12 | Protective plate structure at bottom of power battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322467555.4U CN220753645U (en) | 2023-09-12 | 2023-09-12 | Protective plate structure at bottom of power battery package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220753645U true CN220753645U (en) | 2024-04-09 |
Family
ID=90564877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322467555.4U Active CN220753645U (en) | 2023-09-12 | 2023-09-12 | Protective plate structure at bottom of power battery package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220753645U (en) |
-
2023
- 2023-09-12 CN CN202322467555.4U patent/CN220753645U/en active Active
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