CN114388971B - Support spacing subassembly, battery package assembly and contain its electric motor car - Google Patents

Support spacing subassembly, battery package assembly and contain its electric motor car Download PDF

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Publication number
CN114388971B
CN114388971B CN202210054229.8A CN202210054229A CN114388971B CN 114388971 B CN114388971 B CN 114388971B CN 202210054229 A CN202210054229 A CN 202210054229A CN 114388971 B CN114388971 B CN 114388971B
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CN
China
Prior art keywords
battery pack
face
battery
outer side
assembly
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CN202210054229.8A
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Chinese (zh)
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CN114388971A (en
Inventor
黄春华
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Aulton New Energy Automotive Technology Co Ltd
Shanghai Dianba New Energy Technology Co Ltd
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Aulton New Energy Automotive Technology Co Ltd
Shanghai Dianba New Energy Technology Co Ltd
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Priority to CN202210054229.8A priority Critical patent/CN114388971B/en
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses a supporting and limiting assembly, a battery pack assembly and an electric vehicle comprising the same. The supporting and limiting assembly is fixedly arranged on the side wall of the battery pack in the length direction of the battery pack and is arranged to be abutted against the inner wall surface of the side wall of the battery fixing seat in the length direction of the battery fixing seat so as to limit the relative movement of the battery pack and the battery fixing seat in the width direction of the battery pack; the supporting and limiting assembly comprises a convex hull which is convexly arranged on the outer wall surface of the side wall of the battery pack, and the convex hull is provided with a convex surface which is used for propping against the inner wall surface of the side wall of the battery fixing seat. According to the invention, the relative movement between the battery pack and the end part of the fixed support, which is arranged adjacently, in the width direction of the electric vehicle can be limited, so that collision between the battery pack and the end part of the fixed support, which is arranged oppositely, can be avoided under the condition that the turning angle of the electric vehicle is too large or frequent, the abrasion between the battery pack and the fixed support is reduced, and the service lives of the battery pack and the fixed support are prolonged.

Description

Support spacing subassembly, battery package assembly and contain its electric motor car
The application relates to a split application of a Chinese patent application with the application date of 2017, 12, 29, the application number of 2017114869444 and the application and creation name of a battery pack assembly and an electric vehicle containing the battery pack assembly.
Technical Field
The invention relates to the field of electric automobiles, in particular to a supporting and limiting assembly, a battery pack assembly and an electric automobile comprising the same.
Background
The existing electric vehicle generally comprises a battery pack assembly and a battery fixing seat, wherein the battery pack assembly is installed on the battery fixing seat, the battery fixing seat comprises a fixing support, the battery pack assembly comprises a battery pack and a power conversion guide block, the power conversion guide block is fixedly arranged on the side wall of the battery pack in the length direction of the battery pack and abuts against the inner wall surface of the side wall of the fixing support in the length direction of the fixing support, so that the battery pack is clamped in the fixing support.
However, the following drawbacks exist with this form of construction: the electric conduction block has activity allowance in the width direction of the electric vehicle, when the turning angle of the electric vehicle is overlarge or frequent, the battery pack and the end part of the fixed support which are oppositely arranged are easy to collide with each other to cause larger abrasion, so that the service lives of the battery pack and the fixed support are lower.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a supporting and limiting assembly, a battery pack assembly and an electric vehicle comprising the same.
The invention solves the technical problems by the following technical scheme:
The utility model provides a battery package assembly, its includes battery package and trade electric conduction spacing subassembly, trade electric conduction spacing subassembly set firmly in be located among the battery package the lateral wall of battery package in length direction to set up to support in the battery fixing base be located the medial surface of the lateral wall of battery fixing base in length direction, in order to with the battery package press from both sides tightly in the battery fixing base, battery package assembly still includes:
the support limiting assembly is fixedly arranged on the side wall of the battery pack in the length direction of the battery pack and is arranged to be abutted against the inner wall surface of the side wall of the battery fixing seat in the length direction of the battery fixing seat so as to limit the relative movement of the battery pack and the battery fixing seat in the width direction of the battery pack.
Preferably, in the supporting and limiting assembly and the electricity-exchanging and guiding limiting assembly which are positioned on the same side wall of the battery pack, the supporting and limiting assembly is positioned on the outer side of the electricity-exchanging and guiding limiting assembly in the length direction of the battery pack;
and/or the plurality of the commutation guiding and limiting components are positioned on the same side wall;
and/or the supporting and limiting assembly is fixedly arranged at the end part of the side wall of the battery pack in the length direction of the battery pack so as to limit the relative movement between the end parts of the battery pack and the battery fixing seat, which are adjacently arranged, in the width direction of the battery pack;
And/or, the two end parts of the side wall of the battery pack, which is positioned in the length direction of the battery pack, are respectively provided with the supporting and limiting assembly.
In this scheme, in the support spacing subassembly and the spacing subassembly of trade electric conduction that lie in the same lateral wall of battery package, support spacing subassembly is in the outside that trade electric conduction spacing subassembly was located in the length direction of battery package, can avoid support spacing subassembly to produce the location to the battery package better.
In addition, the plurality of the electricity changing guide limiting components are arranged on the same side wall, so that the electricity changing guide limiting components can better play a role in guiding in the installation process of the battery pack assembly, and the battery pack assembly can be more reliably installed on the fixing support.
In addition, the supporting and limiting assembly is fixedly arranged at the end part of the side wall of the battery pack in the length direction of the battery pack, so that the relative movement between the battery pack and the end part of the fixed support, which is arranged adjacently, in the width direction of the electric vehicle can be directly limited, and collision between the battery pack and the end part of the fixed support, which is arranged oppositely, can be avoided under the condition that the turning angle of the electric vehicle is too large or frequent, and the abrasion between the battery pack and the fixed support is reduced, and the service life of the battery pack and the fixed support is prolonged.
Meanwhile, the two end parts of the side wall, which are positioned in the length direction of the battery pack, of the battery pack are respectively provided with a supporting and limiting assembly, so that the relative movement between the battery pack and the two end parts, which are adjacently arranged on the fixing support, in the width direction of the electric vehicle can be more reliably limited.
Preferably, the two side walls of the battery pack, which are positioned in the length direction of the battery pack, are both provided with the electricity-exchanging guide limiting component;
And/or, the two side walls of the battery pack, which are positioned in the length direction of the battery pack, are respectively provided with the supporting and limiting assembly.
Preferably, the supporting and limiting assembly comprises a convex hull, the convex hull is convexly arranged on the outer wall surface of the side wall of the battery pack, the convex hull is provided with a convex surface, and the convex surface is used for propping against the inner wall surface of the side wall of the battery fixing seat.
Preferably, the convex hull is integrally formed with the side wall of the battery pack.
In this scheme, convex closure and the lateral wall integrated into one piece of battery package, simple structure, low in production cost, and can provide a hard support for the battery package to restrict the relative motion in the width direction of electric motor car between the tip that battery package and fixed bolster set up adjacently more reliably.
Preferably, the convex surface has:
The outer side surface is arranged away from the outer wall surface of the battery pack and is used for propping against the inner wall surface of the side wall of the battery fixing seat;
a front end surface and a rear end surface which are oppositely arranged, wherein the front end surface extends from the front edge of the outer side surface to the outer wall surface of the battery pack, and the rear end surface extends from the rear edge of the outer side surface to the outer wall surface of the battery pack;
The battery pack comprises an upper end face and a lower end face which are oppositely arranged, wherein the upper end face extends from the upper edge of the outer side face to the outer wall face of the battery pack, and the lower end face extends from the lower edge of the outer side face to the outer wall face of the battery pack.
Preferably, the front end surface extends obliquely forward from a front edge of the outer side surface to an outer wall surface of the battery pack in a length direction of the battery pack.
In this scheme, the front end face extends to the outer wall surface of battery package along the length direction slant forward of battery package from the front edge of lateral surface, when installing the battery package assembly in the battery fixing base, the battery package assembly can play the guide effect better for the in-process that the battery fixing base removed along the length direction of electric motor car to ensure both installation reliability and precision.
Preferably, the front end surface is an inclined plane or an arc surface, and the outer side surface is a plane and is arranged in parallel with the outer wall surface of the adjacent battery pack. Therefore, when the battery pack assembly is mounted on the battery fixing seat, the battery pack assembly can move more stably relative to the battery fixing seat along the length direction of the electric vehicle, and after the battery pack assembly is mounted in place, the battery pack assembly is connected with the battery fixing seat more reliably.
Preferably, the rear end surface extends obliquely rearward from a rear edge of the outer side surface to an outer wall surface of the battery pack in a length direction of the battery pack;
and/or the rear end face is an inclined plane or an arc surface;
and/or the upper end surface extends obliquely upwards from the upper edge of the outer side surface to the outer wall surface of the battery pack along the height direction of the battery pack;
And/or the lower end surface extends obliquely downwards from the lower edge of the outer side surface to the outer wall surface of the battery pack along the height direction of the battery pack.
In this scheme, the up end extends to the outer wall surface of battery package along the direction of height slant of battery package from the upper edge of lateral surface, when installing the battery package assembly in the battery fixing base, the battery package assembly is along the direction of height of electric motor car for the in-process of battery fixing base upward movement, and the up end can play the guide effect better to ensure both installation reliability and precision.
Preferably, the convex hull is a shrapnel.
Preferably, the supporting and limiting assembly further comprises a limiting mounting plate, the convex hulls are convexly arranged on the limiting mounting plate, and the limiting mounting plate is detachably connected to the outer wall surface of the side wall of the battery pack.
Preferably, the convex surface has:
The outer side surface is arranged away from the outer wall surface of the battery pack and is used for propping against the inner wall surface of the side wall of the battery fixing seat;
A front end surface extending from a front edge of the outer side surface to the outer side surface of the limit mounting plate;
The upper end face and the lower end face are oppositely arranged, the upper end face extends from the upper edge of the outer side face to the outer side face of the limit mounting plate, and the lower end face extends from the lower edge of the outer side face to the outer side face of the limit mounting plate.
Preferably, the front end face is an inclined plane, and the outer side face is a plane and is arranged in parallel with the outer wall face of the adjacent battery pack;
and/or the upper end surface extends obliquely upwards from the upper edge of the outer side surface to the outer side surface of the limit mounting plate along the height direction of the battery pack;
and/or the lower end surface extends downwards obliquely from the lower edge of the outer side surface to the outer side surface of the limit mounting plate along the height direction of the battery pack;
and/or, the area of the limiting mounting plate, which is opposite to the convex hull, is provided with a hollowed-out part.
In this scheme, preceding terminal surface is the inclined plane, and the lateral surface is a plane to with the outer wall parallel arrangement of adjacent battery package, simple structure, and when installing the battery package assembly in the battery fixing base, the battery package assembly can be followed the length direction of electric motor car and more steadily remove for the battery fixing base, and after the installation in place, the battery package assembly is more reliable with the connection of battery fixing base.
Preferably, the commutation guiding and limiting assembly comprises:
The guide mounting shell is fixedly arranged on the side wall of the battery pack, an accommodating cavity is formed in the guide mounting shell, and an installation opening communicated with the accommodating cavity is formed in the outer side face of the guide mounting shell;
The guide limiting part penetrates through the mounting opening, and the outer side surface of the guide limiting part extends out of the mounting opening along the width direction of the battery pack and is used for abutting against the inner wall surface of the side wall of the battery fixing seat;
And the elastic component acts on the inner side surface of the guide limiting part, and transmits variable force between the guide limiting part and the guide mounting shell, so as to provide an outward clamping force along the width direction of the battery pack to the battery fixing seat.
In this scheme, the setting of elastic component can provide a changeable pretightning force to the battery fixing base to guarantee that the battery package assembly can clamp in the battery fixing base very reliably.
Preferably, the top of the outer side surface of the guide mounting case has a slope extending obliquely inward in the width direction of the battery pack to the upper end surface of the guide mounting case;
And/or the top of the area extending out of the mounting opening in the guiding and limiting part is provided with an inclined plane, and the inclined plane of the guiding and limiting part extends obliquely inwards along the width direction of the battery pack.
In this scheme, the top of the lateral surface of direction installation shell has a inclined plane, when installing the battery package assembly in the battery fixing base, the battery package assembly is along the direction of height of electric motor car for the in-process of battery fixing base upward movement, and the top of the lateral surface of direction installation shell can play the guide effect better to ensure the installation reliability of both.
The top of the area of stretching out the installing port in the direction spacing portion has a inclined plane, when installing the battery package assembly in the battery fixing base, the battery package assembly is along the direction of height of electric motor car for the in-process of battery fixing base upward movement, and the top of direction spacing portion can play the guide effect better to ensure the installation reliability of both.
The invention also provides an electric vehicle, which comprises a battery fixing seat, wherein the battery fixing seat comprises a fixing bracket, the inner wall surface of the side wall of the fixing bracket, which is positioned in the length direction of the fixing bracket, is provided with a protruding part, and the protruding part is convexly arranged on the inner wall surface of the fixing bracket;
The electric vehicle further comprises the battery pack assembly, the battery pack assembly is mounted on the fixed support, and the supporting limiting component is abutted to one face, deviating from the inner wall surface of the fixed support, of the protruding portion.
Preferably, the supporting and limiting component comprises a convex hull, the convex hull is convexly arranged on the outer wall surface of the side wall of the battery pack, the convex hull is provided with a convex surface, and the convex surface is propped against one surface, deviating from the inner wall surface of the fixing support, of the convex portion.
Preferably, the convex hull and the side wall of the battery pack are integrally formed;
The convex surface has:
The outer side faces are arranged in parallel and deviate from the outer wall face of the battery pack, are a plane and are abutted against one face, deviating from the inner wall face of the fixing bracket, of the protruding part;
A front end surface and a rear end surface which are oppositely arranged, wherein the front end surface extends from the front edge of the outer side surface to the outer wall surface of the battery pack, the rear end surface extends from the rear edge of the outer side surface to the outer wall surface of the battery pack, and the front end surface extends obliquely forwards from the front edge of the outer side surface to the outer wall surface of the battery pack along the length direction of the battery pack;
The battery pack comprises an upper end face and a lower end face which are oppositely arranged, wherein the upper end face extends from the upper edge of the outer side face to the outer wall face of the battery pack, and the lower end face extends from the lower edge of the outer side face to the outer wall face of the battery pack.
Preferably, one surface of the protruding part, which faces away from the inner wall surface of the fixed bracket, is a plane;
and/or the front end face is an inclined plane or an arc surface.
Preferably, the convex hull is a spring plate, and the convex surface and one surface of the convex part, which is away from the inner wall surface of the fixing bracket, are in interference fit.
Preferably, the supporting and limiting assembly further comprises a limiting mounting plate, the convex hull is convexly arranged on the limiting mounting plate, and the limiting mounting plate is detachably connected to the outer wall surface of the side wall of the battery pack;
The convex surface has:
The outer side surface is arranged away from the outer wall surface of the battery pack and is in interference fit with one surface, away from the inner wall surface of the fixed bracket, of the protruding part;
the front end face extends from the front edge of the outer side face to the outer side face of the limit mounting plate, the front end face is an inclined plane, and the outer side face is a plane and is arranged in parallel with the outer wall face of the adjacent battery pack;
The upper end face and the lower end face are oppositely arranged, the upper end face extends from the upper edge of the outer side face to the outer side face of the limit mounting plate, and the lower end face extends from the lower edge of the outer side face to the outer side face of the limit mounting plate.
Preferably, the two ends of the side wall of the battery pack in the length direction of the battery pack are respectively provided with the supporting and limiting assembly, and the two ends of the inner wall surface of the side wall of the fixed bracket in the length direction of the fixed bracket are respectively provided with the protruding parts which are correspondingly arranged with the supporting and limiting assembly;
And/or, the two side walls of the battery pack in the length direction of the battery pack are respectively provided with the supporting and limiting assembly, and the inner wall surfaces of the two side walls of the fixed support in the length direction of the fixed support are respectively provided with the protruding parts which are correspondingly arranged with the supporting and limiting assembly.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that:
According to the support limiting component, the battery pack assembly and the electric vehicle comprising the same, the electricity-exchange guide limiting component plays a role in guiding in the installation process of the battery pack assembly, and plays a role in limiting, clamping and supporting the fixed bracket in the width direction of the electric vehicle after the battery pack assembly is installed, so that the battery pack assembly can be reliably installed on the fixed bracket under the condition of normal running of the electric vehicle; meanwhile, the supporting and limiting assembly is fixedly arranged on the side wall of the battery pack in the length direction of the battery pack and abuts against the protruding portion of the fixing support, so that the relative movement of the whole battery pack and the whole fixing support in the width direction of the electric vehicle can be limited, the relative movement of the battery pack and the end portion of the fixing support in the width direction of the electric vehicle can be limited, collision between the battery pack and the end portion of the fixing support, which is arranged relatively to each other, can be avoided under the condition that the turning angle of the electric vehicle is too large or frequent, abrasion caused by the battery pack and the fixing support is reduced, and the service lives of the battery pack and the fixing support are prolonged.
Drawings
Fig. 1 is a schematic perspective view of a battery pack assembly according to embodiment 1 of the present invention in a position state.
Fig. 2 is a schematic perspective view showing a battery pack assembly according to embodiment 1 of the present invention in another position.
Fig. 3 is an enlarged schematic view of the portion a in fig. 1.
Fig. 4 is a schematic front view of a supporting and limiting assembly of the battery pack assembly according to embodiment 1 of the present invention.
Fig. 5 is a schematic cross-sectional view of fig. 4 along B-B.
Fig. 6 is a schematic structural diagram of the battery pack assembly and the battery holder of the electric vehicle according to embodiment 1 of the present invention.
Fig. 7 is a schematic structural diagram of a battery holder of an electric vehicle in a position state according to embodiment 1 of the present invention.
Fig. 8 is a schematic structural diagram of the battery holder of the electric vehicle according to embodiment 1 of the present invention in another position.
Fig. 9 is an enlarged schematic view of the portion C in fig. 8.
Fig. 10 is a schematic view of a partial structure of a battery pack assembly and a battery holder of an electric vehicle according to embodiment 1 of the present invention before installation, wherein the view angle of the drawing is a bottom view.
Fig. 11 is a schematic view of a partial structure of the battery pack assembly and the battery holder of the electric vehicle according to embodiment 1 after the installation, wherein the view angle of the drawing is a bottom view.
Fig. 12 is a schematic view of a portion of a supporting and limiting device of a battery pack assembly according to embodiment 2 of the present invention.
Fig. 13 is a schematic cross-sectional view of the structure of fig. 12 along D-D.
Reference numerals illustrate:
and (3) a battery pack assembly: 10
And (3) battery pack: 11
And the commutation conduction limiting component comprises: 12
And (3) guiding the installation shell: 120
Inclined plane: 1200
Guide limit part: 121
Inclined plane: 1210
The accommodating cavity: 122
And (3) an installation port: 123
Supporting and limiting assembly: 13
Convex hull: 14
An outer side face: 140
Front end face: 141
Rear end face: 142
Upper end face: 143
The lower end face: 144
Limit mounting plate: 15
Hollow part: 150
A supporting part: 16
The battery fixing seat comprises: 30
And (3) fixing a bracket: 31
A protruding part: 32
And (3) supporting a base: 320
Support opening: 321
Support groove: 322
Length direction of the battery pack: l1
Length direction of battery fixing base: l2
Width direction of the battery pack: w
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
Example 1
Fig. 1-2 show a schematic structure of a battery pack assembly 10 according to embodiment 1 of the present invention. As shown in fig. 1-2, the battery pack assembly 10 includes a battery pack 11, a commutation conduction limiting assembly 12, and a support limiting assembly 13. The electricity-exchanging guiding and limiting assembly 12 is fixedly arranged on the side wall of the battery pack 11, which is positioned in the length direction L1 of the battery pack, and is arranged to abut against the inner wall surface of the side wall of the battery fixing seat 30, which is positioned in the length direction L2 of the battery fixing seat, so as to clamp the battery pack 11 in the battery fixing seat 30.
The commutation guiding and limiting component 12 plays a guiding role in the installation process of the battery pack assembly 10, and plays a role in limiting, clamping and supporting the fixing support 31 in the width direction of the electric vehicle after the battery pack assembly 10 is installed, so that the battery pack assembly 10 can be reliably installed on the fixing support 31 under the condition that the electric vehicle normally runs.
The supporting and limiting assembly 13 is fixedly arranged on the side wall of the battery pack 11, which is positioned in the length direction L1 of the battery pack, and is arranged to abut against the inner wall surface of the side wall of the battery fixing seat 30, which is positioned in the length direction L2 of the battery fixing seat, so as to limit the relative movement of the battery pack 11 and the battery fixing seat 30 in the width direction W of the battery pack.
The supporting and limiting assembly 13 is fixedly arranged on the side wall of the battery pack 11, which is positioned in the length direction L1 of the battery pack, and is abutted against the inner wall surface of the battery fixing seat 30, in the process of installing the battery pack assembly 10 to the battery fixing seat 30, the battery fixing seat 30 does not interfere with the supporting and limiting assembly 13, after the battery pack assembly 10 is installed in place, the supporting and limiting assembly 13 can support and limit the relative movement of the whole battery pack 11 and the whole fixing bracket 31 in the width direction of the electric vehicle, so that the relative movement of the whole battery pack 11 and the end part of the fixing bracket 31, which is adjacently arranged, in the width direction of the electric vehicle can be limited, and collision between the battery pack 11 and the end part of the fixing bracket 31, which is oppositely arranged, can be avoided under the condition that the turning angle of the electric vehicle is too large or frequent, thereby reducing abrasion generated between the battery pack 11 and the fixing bracket 31, and prolonging the service life of the battery pack 11 and the fixing bracket 31.
It should be understood that, when the battery pack assembly 10 is mounted on the battery holder 30, the length direction L1 of the battery pack is the same or substantially the same as the length direction L2 of the battery holder, and the length direction of the battery pack is the same or substantially the same as the length direction of the electric vehicle, wherein the front end refers to an end close to the head of the electric vehicle, and the rear end refers to an end close to the tail of the electric vehicle; the width direction W of the battery pack is the same or substantially the same as the width direction of the battery holder 30 and the width direction of the electric vehicle; the height direction of the battery pack 11 is the same as or substantially the same as the height direction of the battery holder 30, and is the same as or substantially the same as the height direction of the electric vehicle.
Among the supporting and limiting components 13 and the commutation conducting and limiting component 12 located on the same side wall of the battery pack 11, the supporting and limiting component 13 is located on the outer side of the commutation conducting and limiting component 12 in the length direction L1 of the battery pack. This can better avoid overdriving the battery pack 11 by the support and limit assembly 13. In the present embodiment, both side walls of the battery pack 11 located in the longitudinal direction L1 of the battery pack are provided with the supporting and limiting members 13.
In addition, the supporting and limiting assembly 13 is fixedly arranged at the end part of the side wall of the battery pack 11, which is positioned in the length direction L1 of the battery pack, so as to limit the relative movement between the battery pack 11 and the end part of the battery fixing seat 30, which is adjacently arranged, in the width direction W of the battery pack, and thus the relative movement between the battery pack 11 and the end part of the battery fixing seat 31, which is adjacently arranged, in the width direction of the electric vehicle, can be directly limited, and the collision between the battery pack 11 and the end part of the battery pack 31, which is oppositely arranged, can be avoided under the condition that the turning angle of the electric vehicle is too large or frequent, thus the abrasion generated between the battery pack 11 and the fixing seat 31 is reduced, and the service lives of the battery pack 11 and the fixing seat 31 are prolonged.
Further, both end portions of the side wall of the battery pack 11 located in the longitudinal direction L1 of the battery pack are provided with supporting and limiting members 13. This can more reliably restrict the relative movement in the width direction of the electric vehicle between the two end portions of the battery pack 11 provided adjacent to the fixing bracket 31.
In the present embodiment, there are 1 support stopper devices at the front end of the battery pack 11, and there are 2 support stopper devices at the rear end of the battery pack 11. In other alternative embodiments, the number of the supporting and limiting devices at the front end of the battery pack 11 may be 2 or more, or the number of the supporting and limiting devices at the rear end of the battery pack 11 may be 1, 3 or more, which does not limit the scope of the present invention.
As shown in fig. 3, the supporting and limiting assembly 13 includes a convex hull 14, and the convex hull 14 is convexly provided on the outer wall surface of the side wall of the battery pack 11. The convex hull 14 has a convex surface for abutting against the inner wall surface of the side wall of the battery holder 30.
The convex hull 14 is integrally formed with the side wall of the battery pack 11. The structure is simple, the production cost is low, and the convex hull 14 can provide a hard support for the battery pack 11 so as to more reliably limit the relative movement between the battery pack 11 and the end part of the fixed bracket 31, which is adjacently arranged, in the width direction of the electric vehicle.
The convex surface has an outer side 140, front and rear oppositely disposed end surfaces 141 and 142, and upper and lower oppositely disposed end surfaces 143 and 144. The outer side 140 is disposed away from the outer wall of the battery pack 11 and is configured to abut against the inner wall of the side wall of the battery holder 30. The front end surface 141 extends from the front edge of the outer side surface 140 to the outer wall surface of the battery pack 11. The rear end surface 142 extends from the rear edge of the outer side surface 140 to the outer wall surface of the battery pack 11. The upper end surface 143 extends from the upper edge of the outer side surface 140 to the outer wall surface of the battery pack 11. The lower end surface 144 extends from the lower edge of the outer side surface 140 to the outer wall surface of the battery pack 11.
In a preferred embodiment, the front end surface 141 extends obliquely forward from the front edge of the outer side surface 140 to the outer wall surface of the battery pack 11 in the length direction L1 of the battery pack. When the battery pack assembly 10 is mounted on the battery fixing base 30, the front end face 141 can better play a guiding role in the process of moving the battery pack assembly 10 relative to the battery fixing base 30 along the length direction of the electric vehicle so as to ensure the mounting reliability and precision of the battery pack assembly 10 and the battery fixing base 30.
In the present embodiment, the front end surface 141 is a slant plane or an arc surface, and the outer side surface 140 is a plane and is disposed parallel to the outer wall surface of the adjacent battery pack 11. This allows the battery pack assembly 10 to move more smoothly along the length of the electric vehicle relative to the battery holder 30 when the battery pack assembly 10 is mounted to the battery holder 30, and the battery pack assembly 10 is more reliably connected to the battery holder 30 after being mounted in place.
In still another preferred embodiment, the rear end surface 142 extends obliquely rearward from the rear edge of the outer side surface 140 to the outer wall surface of the battery pack 11 in the length direction L1 of the battery pack. The rear end face 142 is a bevel or arc face.
In still another preferred embodiment, the upper end surface 143 extends obliquely upward from the upper edge of the outer side surface 140 to the outer wall surface of the battery pack 11 in the height direction of the battery pack 11. When the battery pack assembly 10 is mounted on the battery fixing seat 30, the upper end face 143 can better play a guiding role in the process that the battery pack assembly 10 moves upwards relative to the battery fixing seat 30 along the height direction of the electric vehicle, so as to ensure the mounting reliability and precision of the battery pack assembly and the battery fixing seat.
Further, the lower end surface 144 extends obliquely downward from the lower edge of the outer side surface 140 to the outer wall surface of the battery pack 11 in the height direction of the battery pack 11.
As shown in fig. 1-2, the electrical switching guide limit assembly 12 is provided in a plurality on the same side wall. This can better perform a guiding function during the installation of the battery pack assembly 10 and enable the battery pack assembly 10 to be more reliably mounted to the fixing bracket 31. The plurality of commutation conduction limiting members 12 are disposed at intervals along the length direction L1 of the battery pack. In this embodiment, the number of the commutation conduction limiting members 12 on the same side wall is 3. In other alternative embodiments, the electrical conductivity type limiting members 12 may be provided on the same side wall, and there is no limitation in the scope of the present invention.
Both side walls of the battery pack 11 located in the length direction L1 of the battery pack are provided with a current-exchanging and guiding limiting assembly 12.
As shown in fig. 1 and 4-5, the commutation conduction limiting assembly 12 includes a guide mounting housing 120, a guide limiting portion 121, and an elastic member (not shown). The guide mounting case 120 is fixedly provided to the sidewall of the battery pack 11. The guide mounting case 120 has a receiving chamber 122 therein, and the outer side 140 of the guide mounting case 120 is provided with a mounting opening 123 communicating with the receiving chamber 122. The top of the outer side 140 of the guide mounting case 120 has a slope 1200, and the slope 1200 extends obliquely inward in the width direction W of the battery pack to the upper end 143 of the guide mounting case 120. The top of the outer side 140 of the guide mounting case 120 has an inclined surface 1200, and when the battery pack assembly 10 is mounted on the battery fixing base 30, the top of the outer side 140 of the guide mounting case 120 can better perform a guide function to ensure the mounting reliability of the battery pack assembly 10 and the battery fixing base 30 in the upward movement process of the battery pack assembly along the height direction of the electric vehicle.
In addition, the guide limiting portion 121 is disposed through the mounting opening 123. And the outer side 140 of the guide limiting part 121 extends out of the mounting opening 123 along the width direction W of the battery pack and is used for abutting against the inner wall surface of the side wall of the battery fixing seat 30. The top of the region of the guide stopper 121 protruding from the mounting hole 123 has a slope 1210, and the slope 1210 of the guide stopper 121 extends obliquely inward in the width direction W of the battery pack. The top of the area of the guide limiting part 121 extending out of the mounting opening 123 is provided with an inclined surface 1210, and when the battery pack assembly 10 is mounted on the battery fixing seat 30, the top of the guide limiting part 121 can better play a guide role in the process that the battery pack assembly 10 moves upwards relative to the battery fixing seat 30 along the height direction of the electric vehicle, so that the mounting reliability of the battery pack assembly 10 and the battery fixing seat 30 is ensured.
In addition, the elastic member acts on the inner side surface of the guide stopper 121 and transmits a varying force between the guide stopper 121 and the guide mounting case 120 for providing a clamping force outward in the width direction W of the battery pack to the battery holder 30. The provision of the resilient member provides a variable preload force to the battery holder 30 to ensure that the battery pack assembly 10 is very reliably clamped in the battery holder 30.
As shown in fig. 6, the present embodiment also provides an electric vehicle including the battery pack assembly 10 and the battery holder 30 as described above. As shown in fig. 7 to 9, the battery holder 30 includes a fixing bracket 31, and an inner wall surface of the fixing bracket 31 located on a side wall in a longitudinal direction of the fixing bracket 31 has a protrusion 32, and the protrusion 32 is protruded from the inner wall surface of the fixing bracket 31.
In the present embodiment, the fixing bracket 31 has a frame structure. The projection 32 is secured within the frame of the frame structure. Of course, in other embodiments, the fixing bracket 31 may also be a disc structure with an annular sidewall, a cuboid structure with an opening at the bottom, or a plate structure, which does not limit the scope of the present invention.
As shown in fig. 6 and 10-11, the battery pack assembly 10 is mounted to a stationary bracket 31. The supporting and limiting assembly 13 abuts against one surface of the protruding portion 32, which faces away from the inner wall surface of the fixed bracket 31. In the present embodiment, the convex surface of the convex hull 14 of the supporting and limiting assembly 13 abuts against one of the convex portions 32 facing away from the inner wall surface of the fixed bracket 31. Specifically, the convex outer side 140 abuts against one of the convex portions 32 facing away from the inner wall surface of the fixing bracket 31. As shown in fig. 9, the side of the protruding portion 32 facing away from the inner wall surface of the fixing bracket 31 is a plane.
As shown in fig. 10-11, in this embodiment, the protrusion 32 also serves as a support device and cooperates with the support 16 on the battery pack 11 to provide a plurality of support points for supporting the battery pack 11. Of course, in other embodiments, the protruding portion 32 may be provided separately from the supporting device, which does not limit the scope of the present invention.
In the present embodiment, as will be understood with reference to fig. 9, the protrusion 32 includes a support base 320, and the support base 320 is provided with a support opening 321 and a support groove 322 extending from the support opening 321, wherein the support opening 321 is used for allowing the support portion 16 mounted on the battery pack 11 to enter the support groove 322.
As shown in fig. 10 to 11, in the process of installing the battery pack assembly 10 on the battery fixing seat 30, the supporting portion 16 moves upwards along the height direction of the electric vehicle under the action of external force, and when the battery pack assembly enters the supporting groove 322 through the supporting opening 321, the convex hull 14 supporting the limiting component 13 is located in a space formed by the side wall of the battery pack 11 and the side wall of the fixing bracket 31, and is not in contact with the fixing bracket 31 and the convex portion 32, i.e. the battery fixing seat 30 does not interfere with the convex hull 14; after the support portion 16 moves forward in the longitudinal direction of the electric vehicle under the action of an external force and is mounted in place, the convex surface of the convex hull 14 abuts against one surface of the support base 320 of the convex portion 32 facing away from the inner wall surface of the fixed bracket 31.
As shown in fig. 1-2 and fig. 7-8, both ends of the side wall of the battery pack 11 located in the longitudinal direction L1 of the battery pack are provided with the supporting and limiting members 13, and both ends of the inner wall surface of the fixed bracket 31 located in the longitudinal direction of the fixed bracket 31 are provided with the protruding portions 32 provided in correspondence with the supporting and limiting members 13. Both side walls of the battery pack 11 located in the length direction L1 of the battery pack are respectively provided with a supporting and limiting component 13, and inner wall surfaces of the fixed support 31 located on both side walls of the fixed support 31 in the length direction are respectively provided with a protruding portion 32 corresponding to the supporting and limiting component 13.
Example 2
The battery pack assembly 10 in embodiment 2 has substantially the same structure as the battery pack assembly 10 in embodiment 1, as shown in fig. 12-13, except that the convex hull 14 is a spring sheet. Wherein, support spacing subassembly 13 still includes spacing mounting panel 15, and spacing mounting panel 15 is located to convex closure 14 protrusion, and spacing mounting panel 15 can dismantle the outer wall surface of connecting in the lateral wall of battery package 11. In the present embodiment, the convex hull 14 is integrally formed with the limit mounting plate 15. In other alternative embodiments, the convex hull 14 and the limit mounting plate 15 may not be integrally formed, and may be fixed together by separate structures, which does not limit the scope of the present invention.
Specifically, the convex surface of the convex hull 14 has an outer side 140, a front end 141, and oppositely disposed upper and lower end surfaces 143, 144. The outer side 140 is disposed away from the outer wall of the battery pack 11 and is configured to abut against the inner wall of the side wall of the battery holder 30. The front face 141 extends from the front edge of the outer side face 140 to the outer side face 140 of the limit mounting plate 15. The upper end surface 143 extends from the upper edge of the outer side surface 140 to the outer side surface 140 of the limit mounting plate 15. The lower end surface 144 extends from the lower edge of the outer side surface 140 to the outer side surface 140 of the limit mounting plate 15.
In a preferred embodiment, the front face 141 is a beveled plane and the outer side face is a flat plane and is disposed parallel to the outer wall surface of an adjacent battery pack. Simple structure, and when installing battery package assembly 10 in battery fixing base 30, battery package assembly 10 can be followed the length direction of electric motor car and more steadily remove for battery fixing base 30, and after the installation is put in place, battery package assembly 10 is more reliable with the connection of battery fixing base 30.
In addition, the upper end surface 143 extends obliquely upward from the upper edge of the outer side surface 140 in the height direction of the battery pack 11 to the outer side surface 140 of the limit mounting plate 15. The lower end surface 144 extends obliquely downward from the lower edge of the outer side surface 140 to the outer side surface 140 of the limit mounting plate 15 in the height direction of the battery pack 11. As shown in fig. 13, a hollowed-out portion 150 is provided in a region of the limit mounting plate 15 disposed opposite to the convex hull 14.
The electric vehicle in embodiment 2 is basically the same in structure as the electric vehicle in embodiment 1, except that the electric vehicle includes the battery pack assembly 10 of the present embodiment. Wherein, the convex surface of the convex hull 14 is in interference fit with one surface of the convex portion 32 away from the inner wall surface of the fixed bracket 31. Specifically, the outer side 140 of the convex surface is disposed away from the outer wall surface of the battery pack 11, and is in interference fit with the side of the convex portion 32 away from the inner wall surface of the fixing bracket 31.
In the description of the present invention, it should be understood that the terms "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 invention 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 should not be construed as limiting the present invention.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (22)

1. The support limiting assembly is characterized by being fixedly arranged on the side wall of the battery pack in the length direction of the battery pack and is arranged to be abutted against the inner wall surface of the side wall of the battery fixing seat in the length direction of the battery fixing seat so as to limit the relative movement of the battery pack and the battery fixing seat in the width direction of the battery pack;
the supporting and limiting assembly comprises a convex hull, the convex hull is convexly arranged on the outer wall surface of the side wall of the battery pack, the convex hull is provided with a convex surface, and the convex surface is used for propping against the inner wall surface of the side wall of the battery fixing seat; the convex surface is provided with an outer side surface, and the outer side surface is arranged away from the outer wall surface of the battery pack and is used for propping against the inner wall surface of the side wall of the battery fixing seat; the convex surface also has a front end surface extending from a front edge of the outer side surface to an outer wall surface of the battery pack, the front end surface extending obliquely forward from the front edge of the outer side surface to the outer wall surface of the battery pack in a length direction of the battery pack;
The outer side surface is a plane and is arranged in parallel with the outer wall surface of the adjacent battery pack.
2. The support-and-limit assembly of claim 1, wherein the convex hull is integrally formed with a sidewall of the battery pack.
3. The support-and-limit assembly of claim 1, wherein the convex surface further has:
A rear end surface disposed opposite to the front end surface, the rear end surface extending from a rear edge of the outer side surface to an outer wall surface of the battery pack;
The battery pack comprises an upper end face and a lower end face which are oppositely arranged, wherein the upper end face extends from the upper edge of the outer side face to the outer wall face of the battery pack, and the lower end face extends from the lower edge of the outer side face to the outer wall face of the battery pack.
4. The support-and-restraint assembly of claim 3 wherein,
And/or the front end face is an inclined plane or an arc surface;
and/or the rear end surface extends obliquely and backwards from the rear edge of the outer side surface to the outer wall surface of the battery pack along the length direction of the battery pack;
and/or the rear end face is an inclined plane or an arc surface;
and/or the upper end surface extends obliquely upwards from the upper edge of the outer side surface to the outer wall surface of the battery pack along the height direction of the battery pack;
And/or the lower end surface extends obliquely downwards from the lower edge of the outer side surface to the outer wall surface of the battery pack along the height direction of the battery pack.
5. The support-and-limit assembly of claim 1, wherein the convex hull is a dome.
6. The support and limit assembly of claim 5, further comprising a limit mounting plate, wherein the convex hull is convex on the limit mounting plate, and wherein the limit mounting plate is detachably connected to an outer wall surface of the side wall of the battery pack.
7. The support-and-restraint assembly of claim 6 wherein the support-and-restraint assembly,
The front end face extends from the front edge of the outer side face to the outer side face of the limit mounting plate;
The convex surface further has:
The upper end face and the lower end face are oppositely arranged, the upper end face extends from the upper edge of the outer side face to the outer side face of the limit mounting plate, and the lower end face extends from the lower edge of the outer side face to the outer side face of the limit mounting plate.
8. The support-and-limit assembly of claim 7, wherein the front face is a beveled plane;
and/or the upper end surface extends obliquely upwards from the upper edge of the outer side surface to the outer side surface of the limit mounting plate along the height direction of the battery pack;
and/or the lower end surface extends downwards obliquely from the lower edge of the outer side surface to the outer side surface of the limit mounting plate along the height direction of the battery pack;
and/or, the area of the limiting mounting plate, which is opposite to the convex hull, is provided with a hollowed-out part.
9. A battery pack assembly comprising a battery pack and a support and restraint assembly as claimed in any one of claims 1 to 8.
10. The battery pack assembly of claim 9, further comprising a commutation conduction limiting assembly fixedly arranged on a side wall of the battery pack in the length direction of the battery pack and arranged to abut against an inner wall surface of the battery holder in the length direction of the battery holder to clamp the battery pack in the battery holder.
11. The battery pack assembly of claim 10, wherein in the support and electrical conductivity stop assemblies located on the same side wall of the battery pack, the support and stop assemblies are located outside the electrical conductivity stop assemblies in the length direction of the battery pack;
and/or the plurality of the commutation guiding and limiting components are positioned on the same side wall;
and/or the supporting and limiting assembly is fixedly arranged at the end part of the side wall of the battery pack in the length direction of the battery pack so as to limit the relative movement between the end parts of the battery pack and the battery fixing seat, which are adjacently arranged, in the width direction of the battery pack;
And/or, the two end parts of the side wall of the battery pack, which is positioned in the length direction of the battery pack, are respectively provided with the supporting and limiting assembly.
12. The battery pack assembly of claim 10, wherein the battery pack is provided with the commutation conduction limiting components on both side walls of the battery pack in the length direction;
And/or, the two side walls of the battery pack, which are positioned in the length direction of the battery pack, are respectively provided with the supporting and limiting assembly.
13. The battery pack assembly of any one of claims 10-12, wherein the commutation conduction limiting component comprises:
The guide mounting shell is fixedly arranged on the side wall of the battery pack, an accommodating cavity is formed in the guide mounting shell, and an installation opening communicated with the accommodating cavity is formed in the outer side face of the guide mounting shell;
The guide limiting part penetrates through the mounting opening, and the outer side surface of the guide limiting part extends out of the mounting opening along the width direction of the battery pack and is used for abutting against the inner wall surface of the side wall of the battery fixing seat;
And the elastic component acts on the inner side surface of the guide limiting part, and transmits variable force between the guide limiting part and the guide mounting shell, so as to provide an outward clamping force along the width direction of the battery pack to the battery fixing seat.
14. The battery pack assembly of claim 13, wherein the top of the outer side of the guide mounting case has a slope extending obliquely inward in the width direction of the battery pack to the upper end surface of the guide mounting case;
And/or the top of the area extending out of the mounting opening in the guiding and limiting part is provided with an inclined plane, and the inclined plane of the guiding and limiting part extends obliquely inwards along the width direction of the battery pack.
15. The electric vehicle comprises a battery fixing seat, wherein the battery fixing seat comprises a fixing bracket, and is characterized in that a protruding part is arranged on the inner wall surface of the side wall of the fixing bracket in the length direction of the fixing bracket, and the protruding part is protruding on the inner wall surface of the fixing bracket;
the electric vehicle further comprises a battery pack assembly, wherein the battery pack assembly comprises a battery pack and the supporting and limiting component of claim 1;
the battery pack assembly is installed in the fixed support, and the supporting and limiting assembly is propped against one face, away from the inner wall surface of the fixed support, in the protruding portion.
16. The electric vehicle of claim 15, wherein the battery pack assembly further comprises a commutation conduction limiting assembly fixedly arranged on a side wall of the battery pack in the length direction of the battery pack and arranged to abut against an inner wall surface of the battery holder in the length direction of the side wall of the battery holder to clamp the battery pack in the battery holder.
17. The electric vehicle of claim 15, characterized in that the convex surface abuts against a face of the projection facing away from the inner wall surface of the stationary bracket.
18. The electric vehicle of claim 15, characterized in that the convex hull is integrally formed with the side walls of the battery pack;
And/or the outer side faces are arranged in parallel away from the outer wall face of the battery pack and are abutted against one face, away from the inner wall face of the fixing bracket, of the protruding part;
The convex surface further has:
A rear end surface disposed opposite to the front end surface, the rear end surface extending from a rear edge of the outer side surface to an outer wall surface of the battery pack;
The battery pack comprises an upper end face and a lower end face which are oppositely arranged, wherein the upper end face extends from the upper edge of the outer side face to the outer wall face of the battery pack, and the lower end face extends from the lower edge of the outer side face to the outer wall face of the battery pack.
19. The electric vehicle of claim 15, wherein a face of the projection facing away from the inner wall surface of the stationary bracket is a plane;
and/or the front end face is an inclined plane or an arc surface.
20. The electric vehicle of claim 15, wherein the convex hull is a spring, and the convex surface is in interference fit with a surface of the convex portion facing away from the inner wall surface of the fixing bracket.
21. The electric vehicle of claim 20, wherein the support-and-limit assembly further comprises a limit mounting plate, the convex hull protruding from the limit mounting plate, the limit mounting plate being detachably connected to an outer wall surface of the side wall of the battery pack;
The outer side surface is in interference fit with one surface, away from the inner wall surface of the fixed support, of the protruding part;
The front end face extends from the front edge of the outer side face to the outer side face of the limit mounting plate, and the front end face is an inclined plane;
The convex surface further has:
The upper end face and the lower end face are oppositely arranged, the upper end face extends from the upper edge of the outer side face to the outer side face of the limit mounting plate, and the lower end face extends from the lower edge of the outer side face to the outer side face of the limit mounting plate.
22. The electric vehicle of any one of claims 15-21, wherein the support limit assemblies are provided at both ends of the side wall of the battery pack in the length direction of the battery pack, and the protruding portions provided corresponding to the support limit assemblies are provided at both ends of the inner wall surface of the side wall of the fixed bracket in the length direction of the fixed bracket;
And/or, the two side walls of the battery pack in the length direction of the battery pack are respectively provided with the supporting and limiting assembly, and the inner wall surfaces of the two side walls of the fixed support in the length direction of the fixed support are respectively provided with the protruding parts which are correspondingly arranged with the supporting and limiting assembly.
CN202210054229.8A 2017-12-29 2017-12-29 Support spacing subassembly, battery package assembly and contain its electric motor car Active CN114388971B (en)

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