CN218182356U - Battery package assembly and electric vehicle - Google Patents

Abstract

The utility model provides a battery package assembly and electric vehicle, battery package assembly include the quick change support and can dismantle the battery package of connection on the quick change support, and the battery package is a plurality of and arranges along same direction, is equipped with first buffer structure between battery package and the quick change support. The first buffer structure can play a buffer role between the battery pack and the quick-change bracket, so that the condition that the battery pack and the quick-change bracket are violently collided due to jolting or inertia factors during the running of a vehicle is avoided, and the battery pack is protected. And meanwhile, the battery packs are arranged in a sub-packaging mode, so that the weight of a single battery pack is reduced, and when the single battery pack is damaged, only the damaged battery pack needs to be repaired or replaced correspondingly.

Description

Battery pack assembly and electric vehicle

Technical Field

The utility model relates to an electric vehicle trades the electric field, in particular to battery package assembly and electric vehicle.

Background

At present, electric vehicles are more and more popular among consumers, the electric vehicles need to be charged after the electric energy is used up, and due to the limitation of the existing battery technology and charging technology, the electric vehicles need to spend a long time when being fully charged, which is not as simple and rapid as that of direct oil filling of automobiles. Therefore, in order to reduce the waiting time of the user, it is an effective means to replace the battery when the electric power of the electric vehicle is rapidly exhausted. At present, with the market share and the use frequency of electric vehicles becoming higher and higher, large-sized vehicles (e.g., heavy trucks and light trucks) begin to gradually and widely apply a battery quick-change technology in addition to small-sized vehicles using a storage battery as a driving energy source.

At present, a battery replacement mode of an electric vehicle is commonly used, in which a battery pack is pushed into a quick-change bracket from bottom to top from the lower part of the electric vehicle and is locked and fixed with the quick-change bracket. Because the battery pack and the quick-change support are in a detachable locking mode, the battery pack and the quick-change support cannot be completely locked, and therefore the battery pack is easy to violently collide with the quick-change support under the action of inertia under the condition of jolt or inertia factors of the electric vehicle, and the battery pack is damaged. Particularly for large vehicles, the large vehicles have higher capacity requirements on the battery packs, so the battery packs are larger and heavier and are more easily collided with the quick-change brackets, and the battery packs are damaged.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a battery package assembly and electric vehicle in order to overcome among the prior art because battery package and quick change support produce the collision, and lead to the easy defect of damaging of battery package.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model provides a battery package assembly, includes the quick change support and can dismantle the connection and be in battery package on the quick change support, battery package is a plurality of and arranges along same direction, battery package with be equipped with first buffer structure between the quick change support.

In this scheme, first buffer structure can play the cushioning effect between battery package and quick change support, avoids because the condition of jolting or inertia factor when the vehicle operation leads to battery package and the violent striking of quick change support, plays the guard action to the battery package. And meanwhile, the battery packs are arranged in a sub-packaging mode, so that the weight of a single battery pack is reduced, and when the single battery pack is damaged, only the damaged battery pack needs to be repaired or replaced correspondingly.

Preferably, a plurality of the battery packs are arranged in a length direction or a width direction of the vehicle body.

In this scheme, the battery package is arranged along the length direction or the width direction of automobile body and is convenient for battery package's installation and dismantlement.

Preferably, a second buffer structure is arranged between the adjacent battery packs.

In this scheme, the second buffer structure is used for avoiding colliding between battery package and the battery package.

Preferably, the quick-change bracket is provided with a plurality of battery accommodating grooves with downward openings along the length direction or the width direction of the vehicle body, each battery accommodating groove accommodates one battery pack, and the first buffer structure is arranged between each battery pack and the corresponding battery accommodating groove.

In this scheme, the above arrangement makes every battery package all have independent installation space, can not collide each other or extrude.

Preferably, the battery pack assembly further comprises a locking mechanism and a horizontally arranged locking shaft, the locking mechanism and the locking shaft are respectively arranged in each battery accommodating groove and on each long side wall of the battery pack, and the locking shaft and the locking mechanism are matched in the vertical direction to detachably connect the battery pack to the quick-change support.

In this scheme, locking mechanism and lock axle realize the locking of battery package and quick change support along vertical direction cooperation, combine together vertical process and the vertical locking process of lifting the battery package, improve locking efficiency.

Preferably, the number of the lock shafts is multiple, and the multiple lock shafts are arranged on the long side walls of the two sides of the battery pack at intervals.

In the scheme, the battery pack is supported by the lock shaft from two sides of the battery pack, so that the connection stability of the battery pack and the quick-change bracket is further improved.

Preferably, a plurality of first buffer structures are arranged on the long side wall of the battery pack.

In this scheme, set up a plurality of first buffer structure on the battery package, can realize the many places anticollision of battery package, further prevent that the battery package from appearing damaging.

Preferably, the first buffer structures are also arranged on the short side walls of the battery pack, and the number of the first buffer structures on the long side walls of the battery pack is more than that of the first buffer structures on the short side walls of the battery pack.

In this scheme, set up first buffer structure at the interval all around of battery package, can all play the buffering guard action to battery package all around, can avoid because the vehicle rocks, slows down etc. and causes the battery package to remove to the condition that leads to battery package and quick change support direct collision takes place, and the effect is better. And because the impact force that receives of the long limit of installation lock axle is great, through setting up more first buffer structure in this side to guarantee shock-absorbing capacity.

Preferably, the locking shaft is disposed at a middle-lower portion of a long-side sidewall of the battery pack.

In this scheme for the tie point of battery package and quick change support moves down, thereby improves the stability of battery package locking after on the quick change support.

Preferably, the lock shaft and the first buffer structure at least partially overlap in a height direction.

In this scheme, because the impact force that lock axle department received is great, the buffering effect of lock axle department can be improved in the aforesaid setting, guarantees the connection stability of battery package and quick change support.

Preferably, the lock shaft and the first buffer structure are located at the same height.

In this scheme, can further guarantee the buffering effect of lock axle department, guarantee the connection stability of battery package and quick change support.

Preferably, the first buffer structure comprises an elastic member, and the elastic member is connected to the battery pack or the quick-change bracket.

In this scheme, elastic component is used for preventing the rigidity collision between battery package and the quick change support, realizes elastic buffer, and the restriction battery package prevents that the battery package from damaging for the removal of quick change support.

Preferably, the first buffer structure further comprises a limiting member, and the limiting member and the elastic member are arranged in one-to-one correspondence and are respectively arranged on the battery pack and the quick-change bracket;

when the battery pack is installed on the quick-change bracket, the elastic component props against the limiting component.

In this scheme, through stop member and elastic component cooperation, further restrict the removal of battery package for quick change support, prevent that the battery package from damaging.

Preferably, a battery end water joint is arranged on the top of the battery pack, a vehicle end water joint is arranged on the quick-change bracket, and after the battery pack is connected to the quick-change bracket, the battery end water joint is in butt joint communication with the vehicle end water joint.

In this scheme, install battery end water swivel at the top of battery package, can avoid battery end water swivel to occupy the space of battery package lateral part, battery end water swivel and car end water swivel can lift the process with the battery package and combine together in vertical direction butt joint intercommunication simultaneously, improve the installation effectiveness of battery package.

Preferably, a battery end electric connector is arranged on the top of the battery pack, a vehicle end electric connector is arranged on the quick-change bracket, and when the battery pack is connected to the quick-change bracket, the battery end electric connector is in butt joint communication with the vehicle end electric connector.

In this scheme, install battery end electric connector at the top of battery package, can avoid battery end electric connector to occupy the space of battery package lateral part, battery end electric connector and car end electric connector can lift the process with the battery package and combine together in vertical direction butt joint intercommunication simultaneously, improve the installation effectiveness of battery package.

An electric vehicle is provided with the battery pack assembly.

In this scheme, the battery package assembly is installed on electric vehicle for supply power for electric vehicle.

Preferably, the electric vehicle is an electric truck.

Preferably, the electric vehicle further comprises a girder, the quick-change bracket is connected with the girder of the electric vehicle, the battery pack is located below the girder, and the battery pack is vertically installed on the quick-change bracket from the bottom of the electric vehicle.

In this scheme, supreme vertical installation is on the quick change support down followed to the battery package, and then installs the battery package on electric vehicle's girder.

The utility model discloses an actively advance the effect and lie in:

the first buffer structure can play a buffer role between the battery pack and the quick-change bracket, so that the condition that the battery pack and the quick-change bracket are violently collided due to jolting or inertia factors during the running of a vehicle is avoided, and the battery pack is protected. Meanwhile, the battery packs are arranged in a subpackaging mode, the weight of a single battery pack is reduced, and when the single battery pack is damaged, only the damaged battery pack needs to be repaired or replaced correspondingly.

Drawings

Fig. 1 is a schematic perspective view of an electric vehicle according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a battery pack according to an embodiment of the present invention.

Fig. 3 is a schematic top view of a battery pack according to an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a battery pack, a locking mechanism and an elastic member according to an embodiment of the present invention.

Fig. 5 is a schematic side view of the battery pack, the locking mechanism and the elastic member according to an embodiment of the present invention.

Fig. 6 is an enlarged view of a portion a in fig. 5.

Fig. 7 is a schematic front view of the locking mechanism according to an embodiment of the present invention.

Fig. 8 is an enlarged view of a portion B in fig. 5.

Fig. 9 is a schematic perspective view of an elastic member according to an embodiment of the present invention.

Fig. 10 is a schematic perspective view of a stop member according to an embodiment of the present invention.

Description of the reference numerals:

electric vehicle 1

Quick-change support 11

Battery housing groove 111

Battery pack 12

Girder 13

First buffer structure 2

Elastic member 21

Mounting portion 211

Mounting hole 2111

Protrusion 212

Upper inclined surface 2121

Lower inclined surface 2122

Left inclined plane 2123

Right inclined surface 2124

Free end 213

Engaging part 214

Stop member 22

Positioning surface 221

Guide surface 222

Connecting surface 223

Bottom wall 224

Sidewall 225

Slide channel 226

Cambered surface 231

Lower arc surface 232

Upper cambered surface 233

Arc-shaped guide surface 234

Locking mechanism 31

Lock base 311

Channel 312

First locking member 313

Second lock 314

Lock shaft 32

Battery terminal water joint 41

Battery end electrical connector 42

Vehicle end electrical connector 43

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

[ example 1 ]

As shown in fig. 1 to fig. 3, the present embodiment discloses a battery pack assembly, which includes a quick-change bracket 11 and a battery pack 12 detachably connected to the quick-change bracket 11, where the quick-change bracket 11 is installed on an electric vehicle 1 and is used to connect the battery pack 12 with the electric vehicle 1, and the battery pack 12 is a rectangular body and is used to supply power to the electric vehicle 1. Here, fig. 1 is only for illustrating the installation of the battery pack on the electric vehicle, and the structure of the battery pack in fig. 1 is different from that in fig. 2 and 3.

As shown in fig. 1, the number of the battery packs 12 in this embodiment is three, and the plurality of battery packs 12 are arranged in the width direction of the vehicle body (X direction in fig. 1), which facilitates the mounting and dismounting of the battery packs 12. The present embodiment separately arranges the battery packs 12, reduces the weight of the single battery pack 12, and when the single battery pack 12 is damaged, only the damaged battery pack 12 needs to be repaired or replaced correspondingly.

In other alternative embodiments, a plurality of battery packs 12 may be arranged in the same direction other than the width direction of the vehicle body, for example, the length direction of the vehicle body (Y direction in fig. 1), so as to facilitate the mounting and dismounting of the battery packs 12.

As shown in fig. 1-3, a first buffer structure 2 is disposed between the battery pack 12 and the quick-change bracket 11 along the horizontal direction, and the first buffer structure 2 can buffer between the battery pack 12 and the quick-change bracket 11, so as to avoid the battery pack 12 from being violently collided with the quick-change bracket 11 due to bumping or inertia factors during vehicle operation, and protect the battery pack 12.

Specifically, the quick-change holder 11 has three battery receiving grooves 111 with openings facing downward in the width direction of the vehicle body, and each battery receiving groove 111 receives one battery pack 12, so that each battery pack 12 has an independent mounting space and does not collide or press against each other. The first buffer structure 2 is arranged between each battery pack 12 and the corresponding battery accommodating groove 111, so that each battery pack 12 can be ensured to play a buffer role relative to the quick-change bracket 11, and the battery packs 12 can be further prevented from being damaged.

In other alternative embodiments, if a plurality of battery packs 12 are arranged along the length direction of the vehicle body, the quick-change bracket 11 is provided with a plurality of battery receiving grooves 111 in the length direction of the vehicle body.

As shown in fig. 3-7, the battery pack assembly further includes a locking mechanism 31 and a horizontally arranged locking shaft 32, the locking mechanism 31 is arranged in the battery accommodating groove 111 of the quick-change holder 11 according to the length and width dimensions of the battery pack 12, and the locking shaft 32 is arranged on the side wall of the long side of the battery pack 12. Every battery holding tank 111 and every battery package 12 all correspond locking mechanism 31 and the lock axle 32 that is provided with a plurality of one-to-one settings, and a plurality of locking mechanism 31 set up on the both sides inside wall of battery holding tank 111 along the length direction interval of automobile body, and a plurality of lock axle 32 intervals set up on the long limit lateral wall in both sides of battery package 12 to support battery package 12 from the both sides of battery package 12. The locking shaft 32 and the locking mechanism 31 are matched with each other along the vertical direction (the Z direction in fig. 1) to detachably connect the battery pack 12 to the quick-change support 11, so that the connection stability of the battery pack 12 and the quick-change support 11 is ensured, and meanwhile, the vertical process of lifting the battery pack 12 is combined with the vertical locking process, so that the locking efficiency is improved. In this embodiment, the lock shaft 32 is installed on the long-side wall of the battery pack 12, because the space for installing the lock shaft 32 on the long-side wall of the battery pack 12 is larger, so that a larger number of lock shafts 32 can be installed, and the connection stability between the battery pack 12 and the quick-change bracket 11 is further improved.

As shown in fig. 6 and 7, the locking mechanism 31 in this embodiment includes a lock base 311, the locking mechanism disclosed in the chinese utility model CN202022210681.8, and a channel 312 extending along the gravity direction, and the channel 312 is disposed on the lock base 311 in this embodiment. The connection, cooperation and locking manner of the lock base 311, the first locking member 313 and the second locking member 314 are the same as those of the locking mechanism and the bracket body in the patent.

In other alternative embodiments, the locking mechanism 31 and the locking shaft 32 in this embodiment may be any structures that can achieve vertical (straight up and down) hanging of the battery pack 12 to the electric vehicle 1, such as a bolt-type locking mechanism, an expansion bead-type locking mechanism, a T-type locking mechanism, a hook-type locking mechanism, and the like.

As shown in fig. 2, the lock shaft 32 in the present embodiment is mounted on the upper portion of the long side wall of the battery pack 12, so that the lifting stroke of the battery pack 12 during mounting can be shortened, and interference between the battery pack 12 and other structures on the electric vehicle 1 can be avoided. In other alternative embodiments, the locking shaft 32 may also be disposed at the middle-lower portion of the long side wall of the battery pack 12, so as to move the connection point between the battery pack and the quick-change bracket downward, thereby improving the stability of the battery pack after being locked on the quick-change bracket.

As shown in fig. 2, 3 and 6, the first buffer structures 2 are disposed on the peripheral side walls of the battery pack 12, and the lock shaft 32 and the first buffer structures 2 are located at the same height, that is, the lock shaft 32 and the first buffer structures 2 are located at the same height position of the battery pack 12 in the vertical direction, where the locating of the lock shaft 32 and the first buffer structures 2 at the same height does not mean that the upper end of the lock shaft 32 is flush with the upper end of the first buffer structures 2, or that the lower end of the lock shaft 32 is flush with the lower end of the first buffer structures 2, but means that the upper and lower ends of the lock shaft 32 are located in the areas formed by the upper and lower ends of the first buffer structures 2, or that the upper and lower ends of the first buffer structures 2 are located in the areas formed by the upper and lower ends of the lock shaft 32. The battery pack 12 is all buffered and protected, the situation that the battery pack 12 directly collides with the quick-change support 11 due to the fact that the battery pack 12 moves due to shaking, speed reduction and the like of a vehicle can be avoided, and the connection stability of the battery pack and the quick-change support is guaranteed.

In other alternative embodiments, the lock shaft 32 and the first buffer structure 2 may only partially overlap in the height direction, that is, the lock shaft 32 is partially located above the first buffer structure 2, or the first buffer structure 2 is partially located above the lock shaft 32, so as to improve the buffer effect at the lock shaft 32 and ensure the connection stability of the battery pack 12 and the quick-change bracket 11.

Specifically, be equipped with a plurality of first buffer structure 2 on the long limit lateral wall of battery package 12, be equipped with a first buffer structure 2 on the short limit lateral wall of battery package 12, set up a plurality of first buffer structure 2 on battery package 12, can realize the collision avoidance of many places of battery package 12, further prevent that damage from appearing in battery package 12. Moreover, since the long side on which the lock shaft 32 is mounted is subjected to a large impact force, as shown in fig. 3, the number of the first buffer structures 2 on the long side wall of the battery pack 12 is greater than the number of the first buffer structures 2 on the short side wall of the battery pack 12, so as to ensure the buffer performance.

In other alternative embodiments, a plurality of first buffer structures 2 may be disposed on the short side wall of the battery pack 12, or one first buffer structure 2 may be disposed on the long side wall of the battery pack 12, or only the long side wall or the short side wall of the battery pack 12 may be disposed with the first buffer structure 2.

In order to further avoid the collision between the battery packs 12 and the battery packs 12 due to the bumping or inertia factor when the vehicle is running, a second buffer structure is provided between the adjacent battery packs 12. The first buffer structure 2 and the second buffer structure in this embodiment are the same, but in other alternative embodiments, the structures of the two structures may be different.

[ example 2 ]

The present embodiment discloses another battery pack assembly, and the structure of embodiment 2 is substantially the same as that of embodiment 1, except that the lock shaft 32 is installed on the short side wall of the battery pack 12 instead of the long side wall, at this time, the number of the first buffer structures 2 arranged on the short side wall of the battery pack 12 should be greater than the number of the first buffer structures 2 arranged on the long side wall of the battery pack 12, so as to provide a good buffer function for the battery pack.

[ example 3 ]

The present embodiment discloses another battery pack assembly, based on embodiment 1 or 2, as shown in fig. 4, fig. 5, and fig. 8 to fig. 10, further discloses that the first buffer structure 2 includes a plurality of elastic members 21 and a plurality of limiting members 22, the number of the elastic members 21 and the number of the limiting members 22 are the same, the elastic members 21 and the number of the limiting members 22 are arranged in a one-to-one correspondence, the elastic members 21 are all connected to the inner side wall of the battery accommodating groove 111, and the limiting members 22 are all connected to the outer side wall of the battery pack 12. When the battery pack 12 is mounted on the quick-change holder 11, the elastic member 21 abuts against the stopper member 22. The elastic member 21 is used for preventing rigid collision between the battery pack 12 and the quick-change bracket 11, realizing elastic buffering, and limiting the movement of the battery pack 12 relative to the quick-change bracket 11 through the matching of the limiting member 22 and the elastic member 21, so as to prevent the battery pack 12 from being damaged.

In other alternative embodiments, the position-limiting members 22 are connected to the inner side wall of the battery accommodating groove 111, and the elastic members 21 are connected to the outer side wall of the battery pack 12. Alternatively, a part of the elastic member 21 and a part of the stopper member 22 may be connected to the inner side wall of the battery housing groove 111, and a corresponding part of the stopper member 22 and a corresponding part of the elastic member 21 may be connected to the outer side wall of the battery pack 12.

Specifically, as shown in fig. 8 and 9, the elastic member 21 includes a mounting portion 211 for mounting the elastic member 21 to the inner side wall of the battery receiving groove 111, and a protrusion portion 212 extending convexly with respect to the mounting portion 211 toward a direction away from the inner side wall of the battery receiving groove 111. A surface of the protrusion 212 facing the battery accommodation groove 111 is formed with a groove, and when the elastic member 21 is attached to the quick-change holder 11, a gap defined by the groove is provided between the protrusion 212 and an inner wall surface of the battery accommodation groove 111. When the battery pack 12 is mounted in the quick-change holder 11, the projection 212 is deformed toward the inner side wall of the battery receiving groove 111.

As shown in fig. 9, the protrusion 212 has an upper inclined surface 2121 and a lower inclined surface 2122 which are oppositely arranged and inclined from the protrusion end of the protrusion 212 to the mounting portion 211, and a left inclined surface 2123 and a right inclined surface 2124 which are oppositely arranged and inclined from the protrusion end of the protrusion 212 to the mounting portion 211, and these inclined surfaces make the protrusion 212 have better elasticity and better guidance. By providing the upper and lower inclined surfaces 2122 and the left and right inclined surfaces 2124 on the protrusion 212, contact and guidance between the elastic member 21 and the stopper member 22 are facilitated during the process of mounting the battery pack 12 on the quick-change holder 11, so that resistance during relative movement between the two is reduced, and the efficiency of mounting and dismounting the battery pack 12 is improved.

As shown in fig. 8, in the present embodiment, the elastic member 21 includes two protruding portions 212 distributed in the vertical direction (Z direction in fig. 1), the mounting portion 211 is provided between the adjacent two protruding portions 212, and the elasticity thereof can be better ensured by providing a plurality of protruding portions 212.

In other alternative embodiments, the number of the protruding portions 212 may be one or more, and the mounting portion 211 may be disposed between two adjacent protruding portions 212 or disposed at an end portion of the elastic member 21.

As shown in fig. 9, the upper end of the elastic member 21 is a free end 213, and the free end 213 is connected to one side of the upper inclined surface 2121 of the protrusion 212. The free end 213 may have a plate-like structure that is attached to the inner wall surface of the battery accommodation groove 111, or the free end 213 may have a plate-like structure with a certain gap from the battery accommodation groove 111.

As shown in fig. 4 and 9, the lower end of the elastic member 21 is provided with an engaging portion 214, the engaging portion 214 is formed to be bent toward the inner side wall of the battery housing groove 111 of the electric vehicle 1, and the engaging portion 214 is for engaging with the inner side wall of the battery housing groove 111. Alternatively, the engaging portion 214 may be formed in a hook shape that hooks the lower surface of the inner side wall of the battery receiving groove 111, thereby facilitating the positioning and mounting of the elastic member 21 with respect to the battery receiving groove 111 and also further restricting the movement of the elastic member 21 with respect to the quick-change holder 11. The junction of the engaging portion 214 and the protrusion 212 is an arc 231, and when the stopper member 22 is engaged from below the elastic member 21, the arc 231 facilitates the engagement of the stopper member 22, and prevents the interference of the bottom structure of the elastic member 21 with the upward movement of the stopper member 22.

In other alternative embodiments, the engaging portion 214 may be formed in other shapes that can engage with the inner wall of the battery accommodating groove 111. Further, a corresponding groove or the like may be provided in the inner side wall of the quick-change holder 11 to engage with the engaging portion 214.

In other alternative embodiments, the engaging portion 214 may not be provided, so that both the upper and lower ends of the elastic member 21 are the free ends 213. Alternatively, the engaging portion 214 may be provided at the upper end of the elastic member 21, and the lower end of the elastic member 21 may be the free end 213. Alternatively, the engaging portions 214 may be provided at both upper and lower ends of the elastic member 21.

As shown in fig. 9, the mounting portion 211 is provided with a mounting hole 2111, and a fastener is inserted into the mounting hole 2111 of the mounting portion 211 to connect with the quick-change holder 11. In other alternative embodiments, the mounting portion 211 may be fixed to the quick-change holder 11 in other ways.

As shown in fig. 4, 5, 8-10, the position-limiting member 22 includes a positioning surface 221 and a guiding surface 222, the positioning surface 221 is used for abutting against the elastic member 21, and the guiding surface 222 extends and protrudes outwards from the positioning surface 221. Specifically, the position limiting member 22 in this embodiment includes two guiding surfaces 222, the two guiding surfaces 222 are respectively disposed on two sides of the positioning surface 221, and extend in the vertical direction, and a sliding channel 226 for the elastic member 21 to slide into is formed between the guiding surfaces 222 and the positioning surface 221. A connecting surface 223 is disposed between the guiding surface 222 and the positioning surface 221, and the connecting surface 223 is an arc-shaped surface to facilitate processing and make the guiding surface 222 smoothly extend to the positioning surface 221.

In other alternative embodiments, the stop member 22 may also include more than three guide surfaces 222 to facilitate guiding of the resilient member 21.

As shown in fig. 10, the stopper member 22 includes a bottom wall portion 224 and side wall portions 225 provided on both sides of the bottom wall portion 224, the guide surfaces 222 are opposite surfaces of the side wall portions 225, and the two side wall portions 225 and the bottom wall portion 224 enclose a slide passage 226 extending in the vertical direction. The bottom and the top of the side wall portion 225 in the vertical direction are provided with a lower arc surface 232 and an upper arc surface 233 for guiding the limiting member 22 to be limited against the elastic member 21 on the quick-change bracket 11, so that the limiting member 22 can enter the gap between the battery pack 12 and the quick-change bracket 11. The bottom and top of the bottom wall portion 224 are provided with arc-shaped guide surfaces 234 for guiding the elastic member 21 in contact with each other against the positioning surface 221.

As shown in fig. 10, the upper arc surface 233 and the lower arc surface 232 not only form an arc extending along the width direction of the vehicle body, but also form an arc along the length direction of the vehicle body, and by setting the respective edges or angles of the limiting member 22, i.e., the side wall portion 225 and the bottom wall portion 224, as the arc 231 structure, on one hand, contact guiding between the limiting member 22 and the elastic member 21 is facilitated, and abrasion between the limiting member 22 and the elastic member is reduced, on the other hand, the limiting member 22 is facilitated to enter a narrow space between the battery pack 12 and the quick-change bracket 11, and it is avoided that the limiting member 22 cannot enter a gap between the quick-change bracket 11 and the battery pack 12 due to a slight position deviation between the battery pack 12 and the quick-change bracket 11, and thus the installation efficiency of the battery pack 12 is low.

When the battery pack 12 is loaded into the quick-change holder 11, the stopper member 22 is moved in the vertical direction, and the elastic member 21 is pressed by the stopper member 22 to be deformed. The upper and lower inclined surfaces 2122 of the protrusion portion 212 of the elastic member 21 are used for guiding the limiting member 22 and the protrusion portion 212 of the elastic member 21 to squeeze and limit, so that friction and abrasion to the protrusion portion 212 during the up-and-down movement of the limiting member 22 are reduced, the limiting member 22 moves smoothly up and down, the clamping portion 214 of the elastic member 21 bends towards the direction of the quick-change support 11, the upward movement of the limiting member 22 and the squeezing and limiting of the protrusion portion 212 of the elastic member 21 are facilitated, and the upward movement of the limiting member 22 is prevented from being interfered. The left and right inclined surfaces 2124 of the elastic member 21 cooperate with the side wall portion 225 of the stopper member 22 to facilitate entry of the elastic member 21 into the stopper member 22.

In other alternative embodiments, the first buffer structure 2 in this embodiment may also be a positioning module in chinese utility model CN202022876046.3 or chinese utility model CN 202022876031.7. The positioning module can be independently arranged on the battery pack 12 or the quick-change bracket 11, and the positioning module is used for guiding and buffering when the battery pack 12 is vertically hung on the quick-change bracket 11. Specifically, at the in-process that battery package 12 lifted, orientation module can lead to battery package 12 for the horizontal position of quick change support 11, improves battery package 12 for the location effect of quick change support 11, promotes stability between them, avoids electric vehicle 1 driving in-process, because battery package 12 and quick change support 11 between the clearance lead to battery package 12 to control and rock, guarantees the stability and the security of battery package 12 installation.

In other alternative embodiments, the first buffer structure 2 in this embodiment may also be a positioning assembly and an unlocking component in chinese utility model CN 201821166612.8. The locating component can be independently arranged on the battery pack 12 or the quick-change support 11, the locating component is used for guiding and buffering when the battery pack 12 and the quick-change support 11 are vertically hung, and the unlocking part is matched with the locating component to reset the locating component and further guide and limit the battery pack. Specifically, in the process of lifting the battery pack 12, the positioning assembly is matched with the unlocking part to guide and limit the position of the battery pack 12 in the length direction and the width direction of the vehicle body, so that the positioning effect of the battery pack 12 relative to the quick-change support 11 is improved.

[ example 4 ]

In this embodiment, another battery pack assembly is disclosed, based on any one of embodiments 1 to 3, as shown in fig. 2 and 3, a battery end water connector 41 is further disclosed on the top of the battery pack 12, a vehicle end water connector (not shown) is provided on the quick-change bracket 11, and after the battery pack 12 is connected to the quick-change bracket 11, the battery end water connector 41 is in butt-joint communication with the vehicle end water connector. The vehicle end water connector on the quick-change bracket 11 is connected with a cooling system of the electric vehicle 1, and cooling liquid can flow into the battery pack 12 through the battery end water connector 41 and the vehicle end water connector to cool or preserve heat of the battery pack 12, so that the temperature of the battery pack 12 is always kept within a normal range, and normal power supply of the battery pack 12 is ensured.

In the embodiment, the battery end water joint 41 is installed at the top of the battery pack 12, and compared with the conventional technology in which the battery end water joint 41 is installed on the side wall of the battery pack 12, the battery end water joint 41 can be prevented from occupying the space at the side of the battery pack 12, and meanwhile, the battery end water joint 41 and the vehicle end water joint can be in butt joint communication in the vertical direction to be combined with the lifting process of the battery pack 12, so that the installation efficiency of the battery pack 12 is improved.

[ example 5 ] A method for producing a polycarbonate

This embodiment discloses another battery pack assembly, which is based on any one of embodiments 1 to 4, as shown in fig. 1 to 3, and further discloses that a battery-end electrical connector 42 is disposed on the top of the battery pack 12, a vehicle-end electrical connector 43 is disposed on the quick-change bracket 11, and after the battery pack 12 is connected to the quick-change bracket 11, the battery-end electrical connector 42 is in butt-joint communication with the vehicle-end electrical connector 43. The vehicle-end electrical connector 43 on the quick-change bracket 11 is connected with the circuit control unit of the electric vehicle 1, so that the electrical connection between the battery pack 12 and the electric vehicle 1 is realized, and the battery pack 12 can supply power to the electric vehicle 1.

In this embodiment, the battery end electrical connector 42 is installed at the top of the battery pack 12, and compared with the conventional technology in which the battery end electrical connector 42 is installed on the side wall of the battery pack 12, the battery end electrical connector 42 can be prevented from occupying the space of the side portion of the battery pack 12, and meanwhile, the battery end electrical connector 42 and the vehicle end electrical connector 43 are in butt joint communication in the vertical direction, so that the battery end electrical connector can be combined with the lifting process of the battery pack 12, and the installation efficiency of the battery pack 12 is improved.

[ example 6 ] A method for producing a polycarbonate

As shown in fig. 1, the present embodiment discloses an electric vehicle 1 provided with a battery pack assembly according to any one of embodiments 1 to 5, and the battery pack assembly is used for supplying power to the electric vehicle 1.

As shown in fig. 1, the electric vehicle 1 in the present embodiment is an electric truck, a girder 13 is provided at a chassis position of the electric truck, the quick-change bracket 11 is mounted on the girder 13, and the battery pack 12 is mounted on the quick-change bracket 11 and located below the girder 13 so as to avoid interference with the girder 13. The quick-change bracket 11 can be fixed on the side surface of the girder 13 by means of threaded connection and the like.

In the battery replacing process, the battery replacing equipment enters the chassis position of the electric truck, and the battery pack 12 is vertically installed and detached from the bottom of the electric truck, so that the battery pack 12 is installed on the quick-change support 11, or the battery pack 12 is detached from the quick-change support 11, and the battery replacing operation of the electric truck is realized. Here, the vertical direction refers to the height direction (Z direction in fig. 1) of the electric vehicle 1.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships that are based on normal use of the device or assembly, and are used only for convenience of description and for simplicity of description, and do not indicate or imply that the device or assembly referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that 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 spirit and the principles of the present invention, and these changes and modifications are within the scope of the present invention.

Claims (18)

1. The battery pack assembly comprises a quick-change bracket and a battery pack detachably connected to the quick-change bracket, and is characterized in that the battery packs are arranged in a plurality of directions and in the same direction, and a first buffer structure is arranged between the battery pack and the quick-change bracket.

2. The battery pack assembly of claim 1, wherein a plurality of the battery packs are arranged in a length direction or a width direction of a vehicle body.

3. The battery pack assembly of claim 1, wherein a second buffer structure is disposed between adjacent battery packs.

4. The battery pack assembly according to claim 1, wherein the quick-change bracket has a plurality of battery receiving grooves with downward openings along a length direction or a width direction of the vehicle body, each battery receiving groove receives one battery pack, and the first buffer structure is provided between each battery pack and the corresponding battery receiving groove.

5. The battery pack assembly of claim 4, further comprising a locking mechanism and a horizontally disposed locking shaft, wherein the locking mechanism and the locking shaft are respectively disposed in each of the battery accommodating grooves and on the long side wall of each of the battery packs, and the locking shaft and the locking mechanism are vertically engaged to detachably connect the battery pack to the quick-change holder.

6. The battery pack assembly of claim 5, wherein the number of the locking shafts is plural, and the plural locking shafts are arranged at intervals on both side long side walls of the battery pack.

7. The battery pack assembly of claim 6, wherein a plurality of the first buffer structures are disposed on the long side walls of the battery pack.

8. The battery pack assembly of claim 7, wherein the first buffer structures are also disposed on the short side walls of the battery pack, and the number of the first buffer structures on the long side walls of the battery pack is greater than the number of the first buffer structures on the short side walls of the battery pack.

9. The battery pack assembly of claim 5, wherein the locking shaft is disposed at a middle-lower portion of the long side wall of the battery pack.

10. The battery pack assembly of claim 5, wherein said latch shaft at least partially overlaps said first bumper structure in a height direction.

11. The battery pack assembly of claim 5, wherein the lock shaft is at the same height as the first bumper structure.

12. The battery pack assembly of claim 1, wherein the first cushioning structure comprises a resilient member coupled to the battery pack or the quick-change holder.

13. The battery pack assembly of claim 12, wherein the first cushioning structure further comprises a stop member, the stop member and the resilient member being disposed in one-to-one correspondence and being disposed on the battery pack and the quick-change bracket, respectively;

when the battery pack is mounted on the quick-change bracket, the elastic component abuts against the limiting component.

14. The battery pack assembly of claim 1, wherein a battery end water connector is provided on a top portion of the battery pack, and a vehicle end water connector is provided on the quick-change bracket, wherein the battery end water connector is in butt-joint communication with the vehicle end water connector when the battery pack is attached to the quick-change bracket.

15. The battery pack assembly of claim 1, wherein a battery end electrical connector is provided on a top portion of the battery pack, and a vehicle end electrical connector is provided on the quick-change bracket, the battery end electrical connector being in abutting communication with the vehicle end electrical connector when the battery pack is attached to the quick-change bracket.

16. An electric vehicle characterized by being provided with the battery pack assembly according to any one of claims 1 to 11.

17. The electric vehicle of claim 16, characterized in that the electric vehicle is an electric truck.

18. The electric vehicle of claim 16, further comprising a girder, wherein the quick-change bracket is coupled to the girder of the electric vehicle, wherein the battery pack is positioned below the girder, and wherein the battery pack is vertically mounted on the quick-change bracket from a bottom of the electric vehicle.

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