WO2022162460A1 - Battery pack assembly and vehicle - Google Patents

Battery pack assembly and vehicle Download PDF

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Publication number
WO2022162460A1
WO2022162460A1 PCT/IB2021/062227 IB2021062227W WO2022162460A1 WO 2022162460 A1 WO2022162460 A1 WO 2022162460A1 IB 2021062227 W IB2021062227 W IB 2021062227W WO 2022162460 A1 WO2022162460 A1 WO 2022162460A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
pack assembly
mounting portion
bracket
hollow portion
Prior art date
Application number
PCT/IB2021/062227
Other languages
French (fr)
Inventor
Lei Li
Tao Wu
Xingjia LI
Wei Sun
Kekai YANG
Original Assignee
Psa Automobiles Sa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Psa Automobiles Sa filed Critical Psa Automobiles Sa
Publication of WO2022162460A1 publication Critical patent/WO2022162460A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/236—Hardness
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling

Definitions

  • the present application relates to the field of vehicle battery packs, in particular to a battery pack assembly and a vehicle, and more particularly to a battery pack assembly and a vehicle capable of reducing weight while ensuring strength.
  • the battery in a vehicle is the main source of power for the vehicle.
  • multiple cells are usually connected to form a battery pack provided in the vehicle to increase the driving mileage of the vehicle.
  • a box-type housing is commonly used to encapsulate a battery pack composed of multiple cells.
  • the housing is an empty box structure that accommodates the battery pack inside.
  • the traditional housing is usually made of steel or aluminum with a sheet metal structure, through which a degree of strength and rigidity can be ensured to protect the battery pack from external impacts. Nevertheless, the excessive weight of this type of housing greatly increases the overall weight of the vehicle and may affect the vehicle’s range. In addition, the traditional housing also brings about economic problems such as higher manufacturing costs.
  • a battery pack assembly including a battery pack housing having a hollow structure, so as to reduce the weight of the battery pack assembly while ensuring the strength thereof.
  • a vehicle including a battery pack assembly, the battery pack assembly including a battery pack housing having a hollow structure, so as to reduce the weight of the battery pack assembly while ensuring the strength thereof.
  • the present application provides a battery pack assembly, including: a battery pack module; and a battery pack housing formed by a bottom plate, a front bracket, a rear bracket, and a pair of side brackets that are disposed on the bottom plate and connected to each other, the battery pack housing surrounding the battery pack module; wherein, each of the side brackets includes a mounting portion and a hollow portion both extending in a length direction thereof and connected to each other in a vertical direction, the hollow portion has a hollow interior , and the mounting portion is disposed above the hollow portion.
  • the mounting portion and the hollow portion are partitioned by a first connecting rib, and the first connecting rib is parallel to a lower surface of the side bracket along a length direction of the side bracket.
  • a plurality of screw holes are formed on an upper surface of the mounting portion along the length direction of the side bracket.
  • a cavity portion is formed by an interior of the mounting portion extending along the length direction of the side bracket.
  • the cavity portion is closer to an inner side of the side bracket than the screw hole.
  • the cavity portion has a cross-sectional shape adapted to a cross-sectional shape of the screw hole to avoid interference with the screw hole.
  • an outer surface of the mounting portion is recessed inwardly to form a U-shaped groove.
  • a plurality of second connecting ribs spaced apart from each other are formed inside the hollow portion, and the second connecting ribs extend along the length direction of the side bracket and are parallel to the first connecting rib.
  • the mounting portion, the hollow portion, the first connecting rib and the second connecting ribs are formed by extrusion of aluminum alloy.
  • the present application further provides a vehicle, including the battery pack assembly according to the embodiments of the present application.
  • the present application provides a battery pack assembly, including: a battery pack module, and a battery pack housing configured to accommodate the battery pack module.
  • the battery pack housing is formed by a bottom plate, a front bracket, a rear bracket, and a pair of side brackets that are disposed on the bottom plate and connected to each other; wherein, each of the side brackets includes a mounting portion and a hollow portion both extending in a length direction thereof and connected to each other in a vertical direction, the hollow portion has a hollow interior, and the mounting portion is disposed above the hollow portion.
  • the weight of the battery pack assembly can be reduced while ensuring strength and rigidity, and a large amount of materials can be saved, which is beneficial to lessening manufacturing costs.
  • FIG. 1 is a schematic diagram showing a battery pack housing of a battery pack assembly according to an embodiment of the present application.
  • FIG. 2 is a schematic cross-sectional view showing a side bracket of a battery pack assembly according to an embodiment of the present application
  • 10 battery pack housing
  • 11 front bracket
  • 12 rear bracket
  • 13 side bracket
  • 14 bottom plate
  • 15 battery pack mounting bracket
  • 131 mounting portion
  • 132 first connecting rib
  • 133 hollow portion
  • 134 cavity portion
  • 135 screw hole
  • 136 U-shaped groove
  • 137 second connecting rib.
  • orientation or positional relationship indicated by the terms such as “center”, “longitudinal”, “lateral”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” is based on the orientation or positional relationship shown in the drawings, the purpose of which is only to facilitate describing the embodiments of present application and simplify the description, rather than to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application.
  • the terms “first”, “second”, “third” and the like are for descriptive purpose only, and cannot be understood as indicating or implying the relative importance.
  • FIG. 1 is a schematic diagram showing a battery pack housing of a battery pack assembly according to an embodiment of the present application
  • FIG. 2 is a schematic cross-sectional view showing a side bracket of a battery pack assembly according to an embodiment of the present application.
  • a battery pack assembly is provided, and the battery pack assembly may generally include a battery pack module and a battery pack housing 10.
  • the battery pack module is accommodated in the battery pack housing 10, which includes a bottom plate 14 and a plurality of brackets extending vertically upward from the bottom plate 14 to surround the battery pack module, the plurality of brackets may be a front bracket 11, a rear bracket 12, and a pair of side brackets 13.
  • the front bracket 11, the rear bracket 12, and the pair of side brackets 13 are connected to each other and form a box structure with the bottom plate 14 to accommodate the battery pack module.
  • the side bracket 13 in order to reduce the weight of the battery pack housing 10, has a hollow structure, and the side bracket 13 is roughly formed in a rectangular shape in a cross section perpendicular to the ground. Viewed in this cross section, the side bracket 13 may include a mounting portion 131 located above and a hollow portion 133 of rectangular shape.
  • the mounting portion 131 and the hollow portion 133 extend along the length direction of the side bracket 13 and are connected to each other in a vertical direction.
  • the mounting portion 131 is located above the hollow portion 133.
  • the mounting portion 131 and the hollow portion 133 may be partitioned by a first connecting rib 132, and the first connecting rib 132 may also extend along the length direction of the side bracket 13, namely the first connecting rib 132 may be both the lower surface of the mounting portion 131 and the upper surface of the hollow portion 133.
  • the first connecting rib 132 is parallel to the lower surface of the side bracket 13, and in this case, the hollow portion 133 is formed in a rectangular parallelepiped shape.
  • the battery pack assembly may further include respective brackets provided on the battery pack housing 10, namely, the front bracket 11, the rear bracket 12, and upper pressing bars above the pair of brackets to better seal the battery pack assembly.
  • the upper pressing bar is in the shape of a thin sheet, having a width corresponding to the width of the respective brackets of the battery pack housing 10.
  • the upper pressing bar is connected to the side bracket 13 of the battery pack housing 10 through the mounting portion 131.
  • the upper pressing bar and the mounting portion 131 are connected by means of bolting.
  • a plurality of screw holes 135 may be formed on the upper surface of the mounting portion 131 along the length direction of the side bracket 13, and corresponding screw holes 135 are also formed on the corresponding positions of the upper pressing bar.
  • a plurality of screw holes 135 are formed on the mounting portion 131 and the upper pressing bar at equal intervals.
  • the screw hole 135 on the mounting portion 131 is formed by vertically extending downward from the upper surface of the mounting portion 131.
  • the hollow portion 133 has a hollow structure, so that the weight of the side bracket 13 has been relatively reduced.
  • a cavity portion 134 may be formed inside the mounting portion 131 along the length direction of the side bracket 13. The cavity portion 134 is closer to an inner side of the side bracket 13 than the screw hole 135, namely the cavity portion is formed in the mounting portion 131 at a position closer to the battery pack than the screw hole 135.
  • the shape of the cavity portion 134 may be adapted to the shape of the screw hole 135.
  • the cross section of the screw hole 135 is formed to have a T shape. Accordingly, the cross section of the cavity portion 134 closer to the inner side of the side bracket 13 than the screw hole 135 may be formed to have an L shape so as not to interfere with the screw hole 135.
  • the outer surface of the mounting portion 131 may be recessed toward the inside of the mounting portion 131 to form a U-shaped groove 136, namely an opening of the U-shaped groove 136 faces outward.
  • the weight of the side bracket 13 can be further reduced.
  • a hollow portion 133 having a hollow structure is formed under the mounting portion 131, and the cross section of the hollow portion 133 is formed to have a rectangle.
  • a second connecting rib 137 parallel to the first connecting rib 132 is further formed inside the hollow portion 133, so that the hollow portion 133 can be divided into two portions including an upper portion and a lower portion.
  • a plurality of second connecting ribs 137 may be disposed at equal intervals from each other in the hollow portion 133.
  • the hollow portion 133 is provided with three second connecting ribs 137, so that the hollow portion 133 is divided into four parts with each having a same rectangular cross section, thereby ensuring the rigidity and strength of the side bracket 13 while reducing the weight of the side bracket 13.
  • the side bracket 13 may be formed by extrusion of aluminum alloy, so that a certain strength can be ensured while reducing the weight of the side bracket 13.
  • the battery pack assembly may further include a battery pack mounting bracket 15 which is formed on an outer side of the side bracket 13 and is tightly connected with the side bracket 13.
  • the battery pack housing 10 containing the battery pack module may be mounted on a vehicle body through the battery pack mounting bracket 15.
  • the battery pack mounting bracket 15 may also have a hollow structure, and a plurality of connecting ribs are also provided inside to ensure the strength of the battery pack mounting bracket 15.
  • the present application further provides a vehicle, including the battery pack assembly according to the embodiments of the present application.
  • the present application provides a battery pack assembly, including: a battery pack module, and a battery pack housing configured to accommodate the battery pack module.
  • the battery pack housing is formed by a bottom plate, and a front bracket, a rear bracket, and a pair of side brackets that are disposed on the bottom plate and connected to each other.
  • Each of the side brackets includes a mounting portion and a hollow portion both extending in a length direction thereof and connected to each other in a vertical direction, the hollow portion has a hollow interior, and the mounting portion is disposed above the hollow portion.
  • the weight of the battery pack assembly can be reduced while ensuring strength and rigidity, and a large amount of materials can be saved, which is beneficial to lessening manufacturing costs.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The present application provides a battery pack assembly and a vehicle. The battery pack assembly includes: a battery pack module, and a battery pack housing (10) for accommodating the battery pack module. The battery pack housing (10) is formed by a bottom plate (14), and a front bracket (11), a rear bracket (12), and a pair of side brackets (13) that are disposed on the bottom plate (14) and connected to each other. Each of the side brackets (13) includes a mounting portion (131) and a hollow portion (133) both extending in a length direction thereof and connected to each other in a vertical direction, the hollow portion (133) has a hollow internal structure, and the mounting portion (131) is disposed above the hollow portion (133). According to the battery pack assembly provided by the embodiments of the present application, the weight of the battery pack assembly can be reduced while ensuring strength and rigidity, and a large amount of materials can be saved, which is beneficial to lessening manufacturing costs.

Description

BATTERY PACK ASSEMBLY AND VEHICLE
FIELD OF TECHNOLOGY
The present application relates to the field of vehicle battery packs, in particular to a battery pack assembly and a vehicle, and more particularly to a battery pack assembly and a vehicle capable of reducing weight while ensuring strength.
BACKGROUND
As vehicle technology continues to evolve, there is a growing acceptance of and demand for electric and hybrid vehicles. The battery in a vehicle is the main source of power for the vehicle. With regard to traditional vehicle batteries, multiple cells are usually connected to form a battery pack provided in the vehicle to increase the driving mileage of the vehicle.
In order to integrate a large number of cells, a box-type housing is commonly used to encapsulate a battery pack composed of multiple cells. The housing is an empty box structure that accommodates the battery pack inside. The traditional housing is usually made of steel or aluminum with a sheet metal structure, through which a degree of strength and rigidity can be ensured to protect the battery pack from external impacts. Nevertheless, the excessive weight of this type of housing greatly increases the overall weight of the vehicle and may affect the vehicle’s range. In addition, the traditional housing also brings about economic problems such as higher manufacturing costs.
SUMMARY
(I) Technical problems to be solved
According to a first aspect of the present application, a battery pack assembly is provided including a battery pack housing having a hollow structure, so as to reduce the weight of the battery pack assembly while ensuring the strength thereof.
According to a second aspect of the present application, a vehicle is provided including a battery pack assembly, the battery pack assembly including a battery pack housing having a hollow structure, so as to reduce the weight of the battery pack assembly while ensuring the strength thereof.
(II) Technical solutions
In order to solve at least the above-mentioned technical problems, the present application provides a battery pack assembly, including: a battery pack module; and a battery pack housing formed by a bottom plate, a front bracket, a rear bracket, and a pair of side brackets that are disposed on the bottom plate and connected to each other, the battery pack housing surrounding the battery pack module; wherein, each of the side brackets includes a mounting portion and a hollow portion both extending in a length direction thereof and connected to each other in a vertical direction, the hollow portion has a hollow interior , and the mounting portion is disposed above the hollow portion.
In an embodiment, the mounting portion and the hollow portion are partitioned by a first connecting rib, and the first connecting rib is parallel to a lower surface of the side bracket along a length direction of the side bracket.
In an embodiment, a plurality of screw holes are formed on an upper surface of the mounting portion along the length direction of the side bracket.
In an embodiment, a cavity portion is formed by an interior of the mounting portion extending along the length direction of the side bracket.
In an embodiment, the cavity portion is closer to an inner side of the side bracket than the screw hole.
In an embodiment, the cavity portion has a cross-sectional shape adapted to a cross-sectional shape of the screw hole to avoid interference with the screw hole.
In an embodiment, an outer surface of the mounting portion is recessed inwardly to form a U-shaped groove.
In an embodiment, a plurality of second connecting ribs spaced apart from each other are formed inside the hollow portion, and the second connecting ribs extend along the length direction of the side bracket and are parallel to the first connecting rib.
In an embodiment, the mounting portion, the hollow portion, the first connecting rib and the second connecting ribs are formed by extrusion of aluminum alloy.
The present application further provides a vehicle, including the battery pack assembly according to the embodiments of the present application.
(Ill) Beneficial effects
The present application provides a battery pack assembly, including: a battery pack module, and a battery pack housing configured to accommodate the battery pack module. The battery pack housing is formed by a bottom plate, a front bracket, a rear bracket, and a pair of side brackets that are disposed on the bottom plate and connected to each other; wherein, each of the side brackets includes a mounting portion and a hollow portion both extending in a length direction thereof and connected to each other in a vertical direction, the hollow portion has a hollow interior, and the mounting portion is disposed above the hollow portion. As for the battery pack assembly according to the embodiments of the present application, the weight of the battery pack assembly can be reduced while ensuring strength and rigidity, and a large amount of materials can be saved, which is beneficial to lessening manufacturing costs.
BRIEF DESCRIPTION OF THE DRAWINGS
From the following detailed description, the foregoing and other objectives, features and advantages of the present application will be understood more clearly in conjunction with accompanying drawings, wherein:
FIG. 1 is a schematic diagram showing a battery pack housing of a battery pack assembly according to an embodiment of the present application; and
FIG. 2 is a schematic cross-sectional view showing a side bracket of a battery pack assembly according to an embodiment of the present application;
Reference Numerals:
10: battery pack housing; 11: front bracket; 12: rear bracket; 13: side bracket; 14: bottom plate; 15: battery pack mounting bracket; 131: mounting portion; 132: first connecting rib; 133: hollow portion; 134: cavity portion; 135: screw hole; 136: U-shaped groove; 137: second connecting rib.
DETAILED DESCRIPTION
In order to explain the objectives, technical solutions, and advantages of the present application more clearly, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.
With respect to the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms such as “center”, “longitudinal”, “lateral”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” is based on the orientation or positional relationship shown in the drawings, the purpose of which is only to facilitate describing the embodiments of present application and simplify the description, rather than to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms “first”, “second”, “third” and the like are for descriptive purpose only, and cannot be understood as indicating or implying the relative importance.
FIG. 1 is a schematic diagram showing a battery pack housing of a battery pack assembly according to an embodiment of the present application; and FIG. 2 is a schematic cross-sectional view showing a side bracket of a battery pack assembly according to an embodiment of the present application.
According to an embodiment of the present application, a battery pack assembly is provided, and the battery pack assembly may generally include a battery pack module and a battery pack housing 10.
Specifically, the battery pack module is accommodated in the battery pack housing 10, which includes a bottom plate 14 and a plurality of brackets extending vertically upward from the bottom plate 14 to surround the battery pack module, the plurality of brackets may be a front bracket 11, a rear bracket 12, and a pair of side brackets 13. The front bracket 11, the rear bracket 12, and the pair of side brackets 13 are connected to each other and form a box structure with the bottom plate 14 to accommodate the battery pack module.
Further, in order to reduce the weight of the battery pack housing 10, the side bracket 13 according to an embodiment of the present application has a hollow structure, and the side bracket 13 is roughly formed in a rectangular shape in a cross section perpendicular to the ground. Viewed in this cross section, the side bracket 13 may include a mounting portion 131 located above and a hollow portion 133 of rectangular shape.
Specifically, the mounting portion 131 and the hollow portion 133 extend along the length direction of the side bracket 13 and are connected to each other in a vertical direction. The mounting portion 131 is located above the hollow portion 133. The mounting portion 131 and the hollow portion 133 may be partitioned by a first connecting rib 132, and the first connecting rib 132 may also extend along the length direction of the side bracket 13, namely the first connecting rib 132 may be both the lower surface of the mounting portion 131 and the upper surface of the hollow portion 133. In an embodiment, the first connecting rib 132 is parallel to the lower surface of the side bracket 13, and in this case, the hollow portion 133 is formed in a rectangular parallelepiped shape.
The battery pack assembly according to an embodiment of the present application may further include respective brackets provided on the battery pack housing 10, namely, the front bracket 11, the rear bracket 12, and upper pressing bars above the pair of brackets to better seal the battery pack assembly. The upper pressing bar is in the shape of a thin sheet, having a width corresponding to the width of the respective brackets of the battery pack housing 10. The upper pressing bar is connected to the side bracket 13 of the battery pack housing 10 through the mounting portion 131. Alternatively, the upper pressing bar and the mounting portion 131 are connected by means of bolting.
Thus, a plurality of screw holes 135 may be formed on the upper surface of the mounting portion 131 along the length direction of the side bracket 13, and corresponding screw holes 135 are also formed on the corresponding positions of the upper pressing bar. In an embodiment, a plurality of screw holes 135 are formed on the mounting portion 131 and the upper pressing bar at equal intervals. The screw hole 135 on the mounting portion 131 is formed by vertically extending downward from the upper surface of the mounting portion 131.
The hollow portion 133 has a hollow structure, so that the weight of the side bracket 13 has been relatively reduced. In order to further reduce the weight of the side bracket 13, a cavity portion 134 may be formed inside the mounting portion 131 along the length direction of the side bracket 13. The cavity portion 134 is closer to an inner side of the side bracket 13 than the screw hole 135, namely the cavity portion is formed in the mounting portion 131 at a position closer to the battery pack than the screw hole 135.
In order to ensure that the cavity portion 134 does not interfere with the screw holes 135, the shape of the cavity portion 134 may be adapted to the shape of the screw hole 135. According to an embodiment of the present application, the cross section of the screw hole 135 is formed to have a T shape. Accordingly, the cross section of the cavity portion 134 closer to the inner side of the side bracket 13 than the screw hole 135 may be formed to have an L shape so as not to interfere with the screw hole 135.
In addition, according to an embodiment of the present application, the outer surface of the mounting portion 131 may be recessed toward the inside of the mounting portion 131 to form a U-shaped groove 136, namely an opening of the U-shaped groove 136 faces outward. By forming the U-shaped groove 136, the weight of the side bracket 13 can be further reduced.
Further, a hollow portion 133 having a hollow structure is formed under the mounting portion 131, and the cross section of the hollow portion 133 is formed to have a rectangle. Alternatively, a second connecting rib 137 parallel to the first connecting rib 132 is further formed inside the hollow portion 133, so that the hollow portion 133 can be divided into two portions including an upper portion and a lower portion. In order to ensure the strength of the hollow portion 133, a plurality of second connecting ribs 137 may be disposed at equal intervals from each other in the hollow portion 133. In a battery pack assembly according to an embodiment of the present application, the hollow portion 133 is provided with three second connecting ribs 137, so that the hollow portion 133 is divided into four parts with each having a same rectangular cross section, thereby ensuring the rigidity and strength of the side bracket 13 while reducing the weight of the side bracket 13.
According to an embodiment of the present application, in the battery pack assembly, the side bracket 13 may be formed by extrusion of aluminum alloy, so that a certain strength can be ensured while reducing the weight of the side bracket 13.
In addition, the battery pack assembly according to an embodiment of the present application may further include a battery pack mounting bracket 15 which is formed on an outer side of the side bracket 13 and is tightly connected with the side bracket 13. The battery pack housing 10 containing the battery pack module may be mounted on a vehicle body through the battery pack mounting bracket 15. In order to reduce weight, the battery pack mounting bracket 15 may also have a hollow structure, and a plurality of connecting ribs are also provided inside to ensure the strength of the battery pack mounting bracket 15.
In another aspect, the present application further provides a vehicle, including the battery pack assembly according to the embodiments of the present application.
In conclusion, the present application provides a battery pack assembly, including: a battery pack module, and a battery pack housing configured to accommodate the battery pack module. The battery pack housing is formed by a bottom plate, and a front bracket, a rear bracket, and a pair of side brackets that are disposed on the bottom plate and connected to each other. Each of the side brackets includes a mounting portion and a hollow portion both extending in a length direction thereof and connected to each other in a vertical direction, the hollow portion has a hollow interior, and the mounting portion is disposed above the hollow portion. As for the battery pack assembly according to the embodiments of the present application, the weight of the battery pack assembly can be reduced while ensuring strength and rigidity, and a large amount of materials can be saved, which is beneficial to lessening manufacturing costs.
It should be noted that the above-mentioned embodiments are only used to describe the technical solutions of the present application, and are not limited thereto. Although the present application is described in detail with reference to the embodiments, it should be understood by those of ordinary skill in the art that the technical solutions recorded in the foregoing embodiments may be modified, or some of the technical features thereof may be equivalently substituted; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

WHAT IS CLAIMED IS:
1. A battery pack assembly, comprising: a battery pack module; and a battery pack housing formed by a bottom plate and a front bracket, a rear bracket, and a pair of side brackets that are disposed on the bottom plate and connected to each other, the battery pack housing surrounding the battery pack module; wherein each of the side brackets comprises a mounting portion and a hollow portion both extending in a length direction of the side bracket and connected to each other in a vertical direction, the hollow portion has a hollow interior, and the mounting portion is disposed above the hollow portion.
2. The battery pack assembly of claim 1, wherein the mounting portion and the hollow portion are partitioned by a first connecting rib, and the first connecting rib is parallel to a lower surface of the side bracket along the length direction of the side bracket.
3. The battery pack assembly of claim 2, wherein a plurality of screw holes are formed on an upper surface of the mounting portion along the length direction of the side bracket.
4. The battery pack assembly of claim 3, wherein a cavity portion is formed by an interior of the mounting portion extending along the length direction of the side bracket.
5. The battery pack assembly of claim 4, wherein the cavity portion is closer to an inner side of the side bracket than the screw hole.
6. The battery pack assembly of claim 5, wherein the cavity portion has a cross-sectional shape adapted to a cross-sectional shape of the screw hole to avoid interference with the screw hole.
7. The battery pack assembly of claim 6, wherein an outer surface of the mounting portion is recessed inwardly to form a U-shaped groove.
8. The battery pack assembly of claim 7, wherein a plurality of second connecting ribs spaced apart from each other are formed inside the hollow portion, and the second connecting ribs extend along the length direction of the side
8 bracket and are parallel to the first connecting rib.
9. The battery pack assembly of claim 8, wherein the mounting portion, the hollow portion, the first connecting rib and the second connecting ribs are formed by extrusion of aluminum alloy.
10. A vehicle, comprising the battery pack assembly of any one of claims 1 to 9.
9
PCT/IB2021/062227 2021-01-27 2021-12-23 Battery pack assembly and vehicle WO2022162460A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110114179.3 2021-01-27
CN202110114179.3A CN114824619A (en) 2021-01-27 2021-01-27 Battery package subassembly and vehicle

Publications (1)

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WO2022162460A1 true WO2022162460A1 (en) 2022-08-04

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WO (1) WO2022162460A1 (en)

Citations (5)

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US20110143179A1 (en) * 2009-12-10 2011-06-16 Yoji Nakamori Battery case
US20200130516A1 (en) * 2017-05-05 2020-04-30 Constellium Singen Gmbh Battery box for electric vehicles
US20200398652A1 (en) * 2018-03-01 2020-12-24 Shape Corp. Cooling System Integrated With Vehicle Battery Tray
CN109273640A (en) * 2018-11-15 2019-01-25 桑顿新能源科技有限公司 Battery alclad cabinet and lightweight soft-package battery packet
CN210200841U (en) * 2019-09-30 2020-03-27 蜂巢能源科技有限公司 Power battery pack with combinable battery module and power automobile chassis assembly thereof

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