CN116533734A - Quick change assembly and change electric vehicle - Google Patents

The invention discloses a quick-change assembly and a quick-change vehicle, which relate to the technical field of electric automobiles and comprise a battery pack arranged along the length direction of the quick-change vehicle, wherein a plurality of locking mechanisms are arranged on the battery pack at intervals along the two sides of the width direction and/or the two sides of the length direction of the vehicle body of the quick-change vehicle, and the locking mechanisms are used for being matched with locking pieces on the quick-change vehicle in a locking mode of mutually closing claws so as to lock the battery pack. According to the battery pack, the plurality of locking mechanisms are arranged at intervals on the two sides of the vehicle body of the battery exchange vehicle in the width direction and/or the two sides of the vehicle body in the length direction, the distribution of the locking mechanisms on the battery pack is beneficial to equally dividing bearing capacity and improving locking reliability, and in addition, the locking stability of the locking mechanisms and the locking pieces is improved through the mutual closing of the clamping jaws, so that the stability of the battery pack connected to the battery exchange vehicle is improved.

Quick change assembly and change electric vehicle

Technical Field

The invention relates to the technical field of electric automobiles, in particular to a quick-change assembly and a vehicle for changing electric automobiles.

Background

In recent years, new energy automobiles are rapidly developed, and electric vehicles which rely on storage batteries as driving energy have the advantages of zero emission and low noise, and along with the increasing market share and use frequency of the electric vehicles, electric commercial vehicles in the electric vehicles, such as electric heavy trucks and electric light trucks, are gradually started to appear in respective application scenes, and meanwhile, a battery replacement station for replacing a battery pack of the electric trucks is also matched and built.

Because commercial vehicles such as electric trucks and the like have larger capacity requirements on the battery pack, the size and the weight of the battery pack are generally larger, the battery pack is easy to influence the battery replacement, and the battery pack is not beneficial to being stably and safely mounted on the electric vehicle; meanwhile, as the battery pack is large in size and weight, the battery pack is correspondingly required to be fixed by a locking mechanism with stronger bearing capacity on the electric vehicle.

Disclosure of Invention

The invention aims to overcome the defect of poor connection stability between a battery pack connected with a vehicle for replacing a vehicle in the prior art, and provides a quick-change assembly and the vehicle for replacing the vehicle.

The invention solves the technical problems by the following technical scheme:

the utility model provides a quick change assembly, includes along the battery package that trades electric vehicle length direction set up, the battery package is followed trade electric vehicle's automobile body width direction's both sides and/or length direction's both sides interval is provided with a plurality of locking mechanism, locking mechanism be used for through the jack catch lock mode of drawing close each other with trade the locking piece on the electric vehicle cooperatees, in order to lock the battery package.

In this scheme, through setting up a plurality of locking mechanisms in the automobile body width direction both sides and/or length direction both sides interval of trading electric vehicle, the distribution of locking mechanism on the battery package is favorable to equipartiting the bearing capacity, improves the reliability of locking, in addition, draws close each other in order to improve the locking stability of locking mechanism and locking piece through the jack catch, and then improves the stability that the battery package is connected in trading electric vehicle.

Preferably, the locking member includes a plurality of locking pawls, and the locking mechanism includes a lock shaft; alternatively, the locking member includes a lock shaft, and the locking mechanism includes a plurality of lock pawls;

the locking mechanism is detachably connected with the locking piece to independently lock the battery pack on the battery-powered vehicle.

In this scheme, the position of locking mechanism and locking piece can be exchanged, realizes equally that the battery package is locked or is unlocked on trading the electric vehicle, can dismantle between locking mechanism and the locking piece and be connected, and is more nimble convenient, and user experience is better.

Preferably, the locking mechanism further comprises a driving part and a lock base, wherein a plurality of lock claws are arranged on the lock base and can move on the lock base, and the driving part can drive a plurality of lock claws to move at the same time so as to realize that a plurality of lock claws are mutually closed to lock on a lock shaft or a plurality of lock claws are mutually opened to unlock on the lock shaft.

In this scheme, adopt drive unit drive lock jack catch to realize locking or unblock locking piece, locking or unblock locking piece's degree of automation is high, and locking or unblock locking piece are more convenient and reliable.

Preferably, the bottoms of the lock claws are provided with hinge parts and stress parts, the hinge parts are arranged at intervals, the stress parts are arranged at the outer sides of the hinge parts, the hinge parts are hinged on the lock base, and the driving part acts on the stress parts so as to enable the lock claws to be close to each other and located at the locking position.

In this scheme, adopt articulated mode, lock jack catch can articulated central rotation, and then can act on the atress portion through drive element and rotate with a plurality of lock jack catches of drive to make a plurality of lock jack catches can draw close each other and be in the locking position.

Preferably, the driving component comprises a rotating nut and a driving piece, the rotating nut is rotatably arranged in the lock base, one end of the driving piece is in threaded connection with the rotating nut, so that the nut is rotated to drive the driving piece to rotate towards the direction close to or far away from the lock claw until the other end of the driving piece abuts against or is separated from the stress parts of the lock claws, and locking or unlocking of the lock claw is achieved.

In this scheme, threaded connection's driving method removes more accurately to threaded connection has the auto-lock nature, has promoted reliability and the stability of lock jack catch locking or unblock in-process.

Preferably, the driving member includes a screw and a locking plate, the screw is connected to a bottom surface of the locking plate, and the screw is connected to the rotating nut, and the locking plate is capable of moving in a direction approaching or separating from a plurality of locking claws and is abutted against a force receiving portion acting on the plurality of locking claws.

In this scheme, through a plurality of locking claws of locking board simultaneous drive, stability is high to the synchronism of a plurality of locking claws is better.

Preferably, the locking mechanism further includes a reset member which abuts against the plurality of the lock pawls and is used for driving the plurality of the lock pawls to open mutually.

In this scheme, through reset part, can drive a plurality of lock jack catchs and resume initial condition, and then unblock to be convenient for lock piece stretches into, carries out the locking of next time.

Preferably, the locking mechanism further comprises a limiting component, wherein the limiting component is connected to the rotating nut, is arranged in the lock base and can move in the lock base, and has a stop state and an active state;

in the stopped state, the restricting member is connected to the lock base and is restricted from rotating within the lock base;

and in the movable state, the limiting component and the lock base are separated from each other, so that the limiting component drives the rotating nut to rotate together.

In this scheme, through increasing restriction part, when the detent state, restriction part can play the restriction effect to drive part to improve the security, in the active state, can not influence drive part's drive, restriction part is more nimble reliable.

Preferably, a plurality of locking mechanisms are arranged in at least an edge region of the battery pack, and the locking mechanisms are arranged in the edge region of the battery pack along the length direction and/or the width direction of the vehicle body of the battery-powered vehicle so as to lock or unlock the battery pack at the bottom of the battery-powered vehicle.

In this scheme, locking mechanism sets up in the edge of battery package and the battery package is along the bottom of trading the electric vehicle and trading the electric vehicle realization and can dismantle the connection, and locking mechanism can not occupy the regional space in battery package middle part, and space utilization is more reasonable.

Preferably, the plurality of locking mechanisms are further provided in a middle region of each of the battery packs.

In this scheme, locking mechanism sets up in the middle region of battery package can further improve the connection stability of battery package.

Preferably, when the plurality of locking mechanisms are provided in the intermediate region, the plurality of locking mechanisms are distributed in the longitudinal direction or the width direction of the vehicle body.

In this scheme, locking mechanism sets up in order to further improve battery package's connection stability along automobile body length or width direction.

Preferably, the locking mechanism located in the middle area is hung at the bottom of the battery-changing vehicle along the height direction of the battery-changing vehicle.

In this scheme, the battery package is hung along the direction of height and appears interfering when avoiding installing.

Preferably, the quick-change assembly further comprises a battery pack bracket, wherein the battery pack bracket is used for bearing the battery pack, a connecting part of the battery pack bracket is arranged at the edge of the battery pack, the locking mechanism is arranged on the connecting part, and the locking piece is arranged at the bottom of the battery change vehicle;

or, the locking piece is arranged on the connecting part, and the locking mechanism is arranged at the bottom of the battery-changing vehicle.

In this scheme, battery package bracket has the effect of bearing weight of to the battery package, and battery package bracket's connecting portion is used for being connected with the bottom of trading the electric vehicle, and locking mechanism or locking piece set up on connecting portion correspondingly, are favorable to promoting the stability of connection

Preferably, the battery pack bracket comprises a bracket body connected with the vehicle body, wherein the bracket body and the connecting part are of an integrated structure, or the connecting part is detachably connected with the bracket body.

In this scheme, support body and connecting portion structure as an organic whole, processing is more convenient to be favorable to promoting the reliability of structure. The connecting portion is detachably connected with the support body, so that transportation is facilitated, and cost is reduced.

Preferably, the connecting parts are arranged at two side edges of the battery pack bracket extending along the width direction of the battery exchange vehicle;

and/or the connecting part is arranged at two side edges of the battery pack bracket extending along the length direction of the battery exchange vehicle.

In the scheme, the connecting parts are arranged at different positions of the battery pack so as to fixedly mount the periphery of the battery pack on the battery-replacing vehicle.

Preferably, the connecting parts are at least arranged at two ends of the battery pack along the width direction of the battery-changing vehicle;

and/or, along the length direction of the battery-changing vehicle, the connecting parts are at least arranged at two ends of the battery pack.

In this scheme, connecting portion sets up in battery package tip, is favorable to improving the connection stability at battery package both ends.

Preferably, the quick-change assembly further comprises a liquid cooling connector and an electric connector, wherein the electric connector and the liquid cooling connector are arranged on two opposite sides of the battery pack bracket along the length direction of the battery change vehicle, the electric connector is arranged on the rear side of the battery change vehicle in the length direction, and the liquid cooling connector is arranged on the front side of the battery change vehicle in the length direction.

In this scheme, the electric connector sets up with the liquid cooling connector separately and is applicable to four-wheel drive motorcycle type, and electric connector and liquid cooling connector can not take place to interfere.

Preferably, the quick-change assembly is fixedly connected to a beam of the battery-changing vehicle so as to mount at least two battery packs to the battery-changing vehicle.

In the scheme, the number of battery packs is increased, so that the endurance mileage is improved.

Preferably, the locking mechanism or the locking member is floatingly connected to the battery pack.

In this scheme, through floating the connection in order to reduce the influence of jolting to the battery package, be favorable to promoting the operating stability and the life of battery package.

Preferably, the locking mechanism or the locking member is connected to the battery-changing vehicle in a floating manner.

In this scheme, through floating connection with the influence that reduces jolt to the battery-powered vehicle.

Preferably, the connecting portion is provided with a buffer mechanism corresponding to the bottom of the battery-changing vehicle, the buffer mechanism is disposed on the outer peripheral side of the locking member or the locking mechanism, and the buffer mechanism includes a buffer member that can elastically deform in the vertical direction.

In this scheme, the buffer member through buffer mechanism reduces the influence of jolting to the battery package, is favorable to promoting the operating stability and the life of battery package.

Preferably, in the height direction of the battery pack, the locking member is disposed at a position below a center line of the battery pack.

In this scheme, practice thrift the high space of battery package week side when guaranteeing battery package capacity, improve space utilization.

The battery replacing vehicle comprises vehicle beams and the quick-change assembly, wherein the quick-change assembly comprises three battery packs, one battery pack is positioned between two vehicle beams of the battery replacing vehicle, and the other two battery packs are respectively positioned on two sides of the two vehicle beams.

In this scheme, three battery packs evenly arrange with the bottom space of rational utilization trading electric vehicle.

Preferably, the battery-powered vehicle is an electric truck.

In this scheme, electric truck's bottom space utilizes rationally, can set up a plurality of battery packs, is favorable to promoting its continuation of journey mileage.

The invention has the positive progress effects that: in this scheme, through setting up a plurality of locking mechanisms in the automobile body width direction both sides and/or length direction both sides interval of trading electric vehicle, the distribution of locking mechanism on the battery package is favorable to equipartiting the bearing capacity, improves the reliability of locking, in addition, draws close each other in order to improve the locking stability of locking mechanism and locking piece through the jack catch, and then improves the stability that the battery package is connected in trading electric vehicle.

Drawings

FIG. 1 is a schematic structural diagram of a quick-change assembly according to embodiment 1 of the present invention;

fig. 2 is a schematic view showing the structure of a battery pack holder according to embodiment 1 of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1;

fig. 4 is a schematic structural view of a locking mechanism and a locking member according to embodiment 1 of the present invention;

FIG. 5 is a schematic view showing the internal structure of a locking mechanism and a locking member according to embodiment 1 of the present invention;

FIG. 6 is a schematic view showing the bottom structure of a locking mechanism according to embodiment 1 of the present invention;

fig. 7 is a schematic structural view of a locking member according to embodiment 2 of the present invention.

Description of the reference numerals

Battery pack 100

Locking member 200

Mounting base 210

Movable cavity 211

Through groove 212

Annular clearance gap 213

Elastic member 220

Locking member body 230

Cover plate 240

Floating plate 231

Locking bar 232

Battery pack bracket 300

Connection portion 310

Locking mechanism 400

Lock base 410

Annular groove 411

Locking claw 420

Hinge 431

Force receiving portion 432

Rotating nut 441

Drive member 442

Screw 4421

Lock plate 4422

Reset part 443

Reset portion 4431

Reset pin 4432

Reset spring 4433

Mounting groove 4434

Limiting member 444

Stop 445

Reset piece 446

Width direction W

Length direction L

Detailed Description

The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.

As shown in fig. 1 to 6, the present embodiment provides a quick-change assembly, which includes a battery pack 100 disposed along a length direction L of a battery change vehicle, wherein a plurality of locking mechanisms 400 are disposed on both sides of the battery pack 100 along a width direction W of the battery change vehicle and on both sides of the length direction L at intervals, and the locking mechanisms 400 are used for being matched with locking members 200 on the battery change vehicle in a locking manner in which claws are mutually closed to lock the battery pack 100. Through set up a plurality of locking mechanism 400 in the automobile body width direction W both sides and the length direction L both sides interval of trading the electric vehicle, the distribution of locking mechanism 400 on battery package 100 is favorable to equipartition bearing capacity, improves the reliability of locking, in addition, draws close each other in order to improve the locking stability of locking mechanism 400 and locking piece 200 through the jack catch, and then improves the stability that battery package 100 is connected in trading the electric vehicle.

In other embodiments, the lock mechanism 400 may be provided with a plurality of lock mechanisms 400 at intervals only on both sides of the battery pack 100 in the vehicle body width direction W of the battery-powered vehicle, or a plurality of lock mechanisms 400 may be provided at intervals only on both sides of the battery pack 100 in the vehicle body length direction L of the battery-powered vehicle.

As shown in fig. 1 and 2, a plurality of locking mechanisms 400 are provided in at least an edge region of the battery pack 100, and the plurality of locking mechanisms 400 are provided in the edge region of the battery pack 100 in the vehicle body length direction L and the width direction W of the battery-powered vehicle to lock or unlock the battery pack 100 to the bottom of the battery-powered vehicle. Locking mechanism 400 sets up in the edge of battery package 100 and battery package 100 along the bottom of trading the electric vehicle with trade the electric vehicle and realize dismantling the connection, locking mechanism 400 can not occupy the regional space in battery package 100 middle part, and space utilization is more reasonable.

In other embodiments, the lock mechanism 400 may be provided only in the edge region of the battery pack 100 in the vehicle body longitudinal direction L of the replacement vehicle, or only in the edge region of the battery pack 100 in the vehicle body width direction W of the replacement vehicle.

Wherein a plurality of locking mechanisms 400 are further provided at the middle region of each battery pack 100. The locking mechanism 400 is provided in the middle region of the battery pack 100 to further improve the connection stability of the battery pack 100.

In the present embodiment, the number of locking mechanisms 400 located in the intermediate region is two and distributed in the longitudinal direction L.

In other embodiments, the number of locking mechanisms 400 in the middle region may be greater, and the plurality of locking mechanisms 400 may be distributed along the vehicle body length direction L or the width direction W. The locking mechanism 400 is provided along the vehicle body length or width direction W to further improve the connection stability of the battery pack 100.

Preferably, the locking mechanism 400 located in the middle region is hung on the bottom of the battery exchange vehicle by being hung on the battery exchange vehicle in the height direction. Is hung in the height direction to avoid interference when the battery pack 100 is mounted.

Specifically, the quick-change assembly further includes a battery pack bracket 300, the battery pack bracket 300 is used for carrying the battery pack 100, the connecting portion 310 of the battery pack bracket 300 is disposed at the edge of the battery pack 100, the locking mechanism 400 is disposed on the connecting portion 310, and the locking member 200 is disposed at the bottom of the battery-change vehicle. The battery pack bracket 300 has a bearing function on the battery pack 100, the connecting part 310 of the battery pack bracket 300 is used for being connected with the bottom of the battery exchange vehicle, and the locking mechanism 400 is correspondingly arranged on the connecting part 310, thereby being beneficial to improving the stability of connection

In other embodiments, the locking member 200 may be provided on the connection portion 310, and the locking mechanism 400 may be provided at the bottom of the battery-powered vehicle.

In this embodiment, the battery pack bracket 300 includes a bracket body connected to the vehicle body, and the bracket body and the connection portion 310 are integrally formed. The bracket body and the connecting part 310 are of an integrated structure, so that the processing is more convenient, and the reliability of the structure is improved.

In other embodiments, the connecting portion 310 may also be detachably connected to the bracket body. The connecting portion 310 is detachably connected with the bracket body, so that transportation is facilitated, and transportation cost is reduced.

In the present embodiment, the connection parts 310 are provided at both side edges of the battery pack bracket 300 extending in the width direction W of the battery change vehicle, and the connection parts 310 are also provided at both side edges of the battery pack bracket 300 extending in the length direction L of the battery change vehicle. The connection parts 310 are provided at different positions of the battery pack 100 to fixedly mount the periphery of the battery pack 100 on the battery-powered vehicle.

In other embodiments, the connection parts 310 may be provided only at both sides of the battery pack bracket 300 extending in the width direction W of the battery change vehicle, or the connection parts 310 may be provided only at both sides of the battery pack bracket 300 extending in the length direction L of the battery change vehicle.

In the present embodiment, the connection portions 310 are provided at least at both ends of the battery pack 100 in the width direction W of the battery-powered vehicle, and the connection portions 310 are provided at least at both ends of the battery pack 100 in the length direction L of the battery-powered vehicle. The connection part 310 is disposed at the end of the battery pack 100, which is advantageous in improving the connection stability of both ends of the battery pack 100.

In other embodiments, the connection portions 310 are provided at least at both ends of the battery pack 100 in the width direction W of the battery-powered vehicle, or the connection portions 310 are provided at least at both ends of the battery pack 100 in the length direction L of the battery-powered vehicle.

In this embodiment, the quick-change assembly further includes a liquid-cooled connector and an electric connector, the electric connector and the liquid-cooled connector are disposed on opposite sides of the battery pack bracket 300 along the length direction L of the battery-powered vehicle, wherein the electric connector is disposed on a rear side of the battery-powered vehicle in the length direction L, and the liquid-cooled connector is disposed on a front side of the battery-powered vehicle in the length direction L. The electric connector and the liquid cooling connector are arranged separately and are suitable for four-wheel drive vehicles, and the electric connector and the liquid cooling connector cannot interfere.

In this embodiment, the quick-change assembly is fixedly coupled to the vehicle beam of the battery-change vehicle to mount at least two battery packs 100 to the battery-change vehicle. The endurance mileage is improved by increasing the number of the battery packs 100.

As shown in fig. 3 and 4, the locking member 200 includes a lock shaft, the locking mechanism 400 includes a plurality of lock pawls, and the locking mechanism 400 is detachably connected to the locking member 200 to achieve independent locking of the battery pack 100 to the battery powered vehicle. Can realize locking or unblock battery package 100 on trading the electric vehicle through locking piece 200 and locking mechanism 400, can dismantle between locking mechanism 400 and the locking piece 200 and be connected, more nimble convenience, user experience is better.

In other embodiments, the lock member 200 may include a plurality of lock pawls, and the lock mechanism 400 may include a lock shaft.

As shown in fig. 4, the locking mechanism 400 further includes a driving component and a lock base 410, where a plurality of lock pawls 420 are disposed on the lock base 410 and can move on the lock base 410, and the driving component can drive the plurality of lock pawls 420 to move at the same time, so as to achieve that the plurality of lock pawls 420 are close to each other to lock on the lock shaft or the plurality of lock pawls 420 are open to each other to unlock on the lock shaft. The locking claw is driven by the driving part to lock or unlock the locking piece 200, so that the degree of automation of locking or unlocking the locking piece 200 is high, and the locking or unlocking of the locking piece 200 is more convenient and reliable.

As shown in fig. 5, the bottoms of the plurality of locking claws 420 are respectively provided with a hinge portion 431 and a force receiving portion 432 outside the hinge portion 431, the hinge portion 431 is hinged on the lock base 410, and the driving member acts on the plurality of force receiving portions 432 to enable the plurality of locking claws 420 to be close to each other and to be in the locking position. In a hinged manner, the locking claw 420 can rotate in a hinged center, and then the force-bearing part 432 can be acted by the driving component to drive the locking claws 420 to rotate, so that the locking claws 420 can be mutually closed and are in a locking position.

As shown in fig. 5, in the present embodiment, the driving component includes a rotating nut 441 and a driving member 442, the rotating nut 441 is rotatably disposed in the lock base 410, one end of the driving member 442 is screwed to the rotating nut 441, so that the nut rotates to drive the driving member 442 to rotate toward or away from the lock pawls 420 until the other end of the driving member 442 abuts against or is separated from the stress portions 432 of the lock pawls 420, so as to lock or unlock the lock pawls 420. The driving mode of the threaded connection is more accurate in movement, and the threaded connection has self-locking property, so that reliability and stability of the locking claw 420 in the locking or unlocking process are improved.

Specifically, the inner wall surface of the lock base 410 has an annular groove 411, and the rotation nut 441 is located in the annular groove 411 and rotates in the annular groove 411. The annular groove 411 can play a limiting role on the rotary screw 441, so that offset dislocation phenomenon is avoided in the use process, and the stability is high.

In the present embodiment, the driving member 442 includes a screw 4421 and a locking plate 4422, the screw 4421 is connected to the bottom surface of the locking plate 4422, and the screw 4421 is connected to the rotating nut 441, and the locking plate 4422 is movable in a direction approaching or separating from the plurality of locking claws 420 and abuts against the force receiving portions 432 acting on the plurality of locking claws 420. The plurality of locking claws 420 are driven simultaneously by the locking plate 4422 with high stability and better synchronization of the plurality of locking claws.

In this embodiment, the locking mechanism 400 further includes a reset member 443, the reset member 443 abutting against the plurality of locking pawls 420 and being used to drive the plurality of locking pawls 420 to open toward each other. By the reset part 443, the plurality of locking claws 420 can be driven to restore the original state, so as to unlock, and the locking member 200 can be conveniently inserted to perform the next locking.

Specifically, the bottoms of the lock pawls 420 each have a reset portion 4431, a hinge portion 431 and a force receiving portion 432 connected in order from inside to outside, the reset member 443 acts on the reset portions 4431, the hinge portion 431 is hinged to the lock base 410, and the driving member acts on the force receiving portions 432. The structure of the locking mechanism 400 is more compact, which is advantageous in reducing the volume of the locking mechanism 400.

The reset component 443 includes a reset spring 4433 and a reset pin 4432, one side of the driving component facing the plurality of locking claws 420 is provided with an inward concave mounting groove 4434, the reset spring 4433 is positioned in the mounting groove 4434, one end of the reset pin 4432 abuts against the plurality of locking claws 420, and the other end of the reset pin 4432 extends into the mounting groove 4434 and abuts against the reset spring 4433. The reset part 443 has a simple structure and high structural stability.

As shown in fig. 5 and 6, in the present embodiment, the locking mechanism 400 further includes a restriction member connected to the rotation nut 441, the restriction member being disposed in the lock base 410 and being movable within the lock base 410, and having a stopped state and an active state;

in the stopped state, the restriction member is connected to the lock base 410 and is restricted from rotating within the lock base 410;

in the active state, the restriction member and the lock base 410 are separated from each other, so that the restriction member rotates the rotation nut 441 together.

By adding the limiting component, the limiting component can limit the driving component in the stop state so as to improve the safety, and the driving of the driving component is not influenced in the movable state, so that the limiting component is more flexible and reliable.

Specifically, one end of the restriction member has an inner groove that is fitted around the rotation nut 441 and is movable on the rotation nut 441, the other end of the restriction member has a restriction portion, and the lock base 410 has a stopper portion 445 therein, and in the stopped state, the restriction portion is connected to the stopper portion 445, and in the active state, the restriction portion and the stopper portion 445 are separated from each other.

As shown, the latch mechanism 400 further includes a return member 446, the return member 446 acting on the restriction member and being configured to drive the restriction member to move to the latch state. Realizes the retaining state without external force, and has high safety and stability

As shown in fig. 6, the restriction member and the stopper 445 are gears and are engaged with each other. The gear is used for the restriction member and the stopper 445, and the structure is simple and the stability is high.

In the present embodiment, the connecting portion 310 is provided with a buffer mechanism corresponding to the bottom of the battery-powered vehicle, the buffer mechanism being provided on the outer peripheral side of the lock member 200 or the lock mechanism 400, the buffer mechanism including a buffer member elastically deformable in the vertical direction. The buffer member of the buffer mechanism reduces the influence of jolt on the battery pack 100, and is beneficial to improving the running stability and the service life of the battery pack 100.

In the present embodiment, the locking member 200 is disposed at a position below the center line of the battery pack 100 in the height direction of the battery pack 100. The capacity of the battery pack 100 is ensured, the height space of the periphery side of the battery pack 100 is saved, and the space utilization rate is improved.

The embodiment also provides a battery-changing vehicle, which comprises a vehicle beam and the quick-changing assembly, wherein the quick-changing assembly comprises three battery packs 100, one battery pack 100 is positioned between two vehicle beams of the battery-changing vehicle, and the other two battery packs 100 are respectively positioned at two sides of the two vehicle beams. The three battery packs 100 are uniformly arranged to reasonably utilize the bottom space of the battery-powered vehicle.

Specifically, the battery-powered vehicle is an electric truck. The bottom space of the electric truck is reasonably utilized, and a plurality of battery packs 100 can be arranged, so that the cruising mileage of the electric truck can be improved.

Example 2

The present embodiment is basically the same in structure as embodiment 1, except that:

as shown in fig. 7, in the present embodiment, the lock member 200 is floatingly connected to the battery change vehicle. The influence of jolting on the battery-changing vehicle is reduced through the floating connection.

In other embodiments, the locking mechanism 400 may also be floatingly coupled to the battery car.

Specifically, the locking member 200 includes a mounting base 210, an elastic member 220, and a locking member body 230, the elastic member 220 is connected to the mounting base 210, one end of the locking member body 230 is connected to the elastic member 220, and the other end of the locking member body 230 is used for locking in the locking mechanism 400.

The locking member body 230 is floatingly coupled to the mount 210 by the elastic member 220, and the locking member 200 has a certain shock absorbing effect when the locking member 200 is locked to the locking mechanism 400.

Further, the locking member body 230 includes a floating plate 231 and a locking bar 232 connected to each other, the mounting base 210 is provided with a movable cavity 211, specifically, the movable cavity 211 is a circular groove, the bottom of the circular groove is provided with a through groove 212, the floating plate 231 is disposed in the circular groove, the locking bar 232 is made to pass through the through groove 212, the cover plate 240 covers the opening on the upper side of the circular groove, the floating plate 231 is sealed in the circular groove, an annular movable gap 213 is formed between the side edge of the floating plate 231 and the inner wall of the circular groove, the elastic component 220 is filled in the annular movable gap 213, and the other end of the locking bar 232 is used for locking in the locking mechanism 400. In this example, the elastic member 220 is filled in the annular gap so that the outer periphery of the floating plate 231 is uniformly elastically stressed, and the floating plate 231 can rebound to the center position after being forced to move, thereby having a certain self-centering capability.

In this embodiment, the locking mechanism 400 is floatingly coupled to the battery pack 100. The floating connection is used for reducing the influence of jolt on the battery pack 100, so that the running stability and the service life of the battery pack 100 are improved.

In other embodiments, the lock member 200 may be floatingly coupled to the battery pack 100.

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.