CN116409129A

CN116409129A - Quick-change battery and vehicle

Info

Publication number: CN116409129A
Application number: CN202211305924.3A
Authority: CN
Inventors: 张建平; 于新瑞; 褚佳玮; 张小春
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2022-07-15
Filing date: 2022-10-24
Publication date: 2023-07-11
Also published as: CN116001548A; CN218536328U; CN218577492U; CN218577493U; CN219007567U; CN116118455A; CN116118469A; CN218558542U; CN218577494U; CN218558547U; CN218558548U; CN116118453A; CN116118454A; CN218577489U; CN219096472U; CN116118457A; CN218805182U; CN219096474U; CN116118452A; CN116118461A

Abstract

The invention discloses a quick-change battery and a battery-changing vehicle, wherein the quick-change battery comprises a plurality of battery packs arranged along the length direction of the battery-changing vehicle, each battery pack is provided with a plurality of locking pieces, and each battery pack is independently locked at the bottom of the vehicle body of the battery-changing vehicle in a vertical bead expansion locking mode through the locking pieces. According to the battery pack mounting and dismounting device, the battery pack can be mounted on the beam below the vehicle body through the battery pack bracket, so that the battery pack can be dismounted and mounted from the bottom of the vehicle body, and the problems that in the prior art, the battery pack is placed above the vehicle body by an electric heavy truck or light truck, so that the power exchanging cost is high and the power exchanging is inconvenient are solved; the single battery pack of the quick-change battery is smaller in volume and weight, convenient to install and capable of reducing the requirements on the battery replacement equipment; the plurality of battery packs are arranged along the length direction of the battery changing vehicle, so that the structure is compact, and the installation space is saved; each battery pack is independently locked at the bottom of the vehicle body of the electric vehicle in a bead expansion locking mode, so that the disassembly and assembly flexibility is higher.

Description

Quick-change battery and vehicle

The present application claims priority from chinese patent application 202210837804.1, whose application date is 2022, month 07, and 15. The present application refers to the entirety of the above-mentioned chinese patent application.

Technical Field

The invention relates to a quick-change battery and a battery-change vehicle.

Background

The existing battery pack mounting mode of the electric automobile is generally divided into fixed mounting and replaceable mounting, wherein the battery pack which is fixedly mounted is generally fixed on the automobile; the replaceable safety-rotating battery pack generally adopts a movable mounting mode, and the battery pack can be taken down at any time to be replaced or charged, and is mounted on the vehicle body after the replacement or charging is finished.

In the prior art, a vehicle generally adopts whole-pack power conversion, the weight of a single battery pack is large, the requirement on power conversion equipment for realizing power conversion is high, the use is inflexible, and if the battery pack needs to be replaced, the whole battery pack needs to be replaced. These drawbacks are particularly pronounced when the vehicle is a heavy truck.

In addition, to present joint formula locking structure, at the in-process that locks the battery package, the lock axle is usually for locking mechanism rising in place before the level advances in place, and the motion process of battery package is comparatively complicated promptly, and the requirement to the battery replacement equipment also can be higher, also can influence the efficiency of battery package locking, and then influences the battery replacement efficiency of vehicle.

Disclosure of Invention

The invention aims to overcome at least one of the defects in the prior art and provide a quick-change battery and a battery-change vehicle.

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

the quick-change battery comprises a plurality of battery packs which are arranged along the length direction of a battery changing vehicle, wherein each battery pack is provided with a plurality of locking pieces, and each battery pack is independently locked at the bottom of the vehicle body of the battery changing vehicle in a bead expanding locking mode along the vertical direction through the locking pieces.

In this scheme, battery package just can independently lock in the bottom of trading the automobile body of electric vehicle through a plurality of locking piece, and the mode of realizing battery package locking is comparatively simple. In addition, the battery pack is vertically connected to the bottom of the vehicle body of the battery replacement vehicle, and only vertical movement can be carried out in the battery pack locking process, namely, the battery pack is directly upwards and downwards, so that the movement mode is simpler, and the battery pack locking efficiency is improved. The battery pack in this application adopts X to (vehicle length direction) branch case, and X is to the branch case be difficult for producing the unbalanced load at the power conversion in-process, also can not cause the unbalanced load of vehicle under the condition of only connecting partial battery pack moreover, and the mode of use is more nimble, and the suitability is better. The mode of the expanding bead locking is simple to operate, a more complex power conversion process is not needed, the requirements on power conversion equipment are reduced, and the locking efficiency and the locking reliability of the battery pack are both higher.

Preferably, the structure of pearl locking mode rises include locking mechanism with the locking piece, the locking piece includes the pearl that rises, locking mechanism includes the lock seat, rise the pearl with can dismantle between the lock seat and be connected in order to realize with the battery package independent locking in on the quick change support or the roof beam of trading electric vehicle.

In this scheme, through the cooperation between pearl and the lock seat that rises, realize the pearl locking that rises between battery package and the change electric vehicle, be favorable to improving the reliability and the durability of locking.

Preferably, the expanding beads are arranged on the battery pack, and the lock seat is arranged on the quick-change bracket or the vehicle beam; or the lock seat is arranged on the battery pack, and the expansion beads are arranged on the quick-change bracket or the vehicle beam.

In this scheme, rise one of them setting of pearl and lock seat on the battery package, another setting is on trading electric vehicle to realize battery package and trading electric vehicle's connection through the cooperation of rising pearl and lock seat.

Preferably, the expanding bead or the lock seat is arranged at the middle position of the battery pack, and the expanding bead or the lock seat penetrates through the battery pack.

In this scheme, above-mentioned setting is used for guaranteeing the stability that the battery package is connected with the replacement vehicle. In addition, the expanding beads or the lock seats penetrate through the battery pack, so that the battery pack can be conveniently unlocked by being in butt joint with external unlocking equipment.

Preferably, the expanding bead or the lock seat is connected to the battery pack in a floating mode.

In this scheme, the floating connection can reduce the torque or the vibrations transmission to quick change support or roof beam when changing electric vehicle receives the turning distortion or jolt, and then makes quick change support or roof beam receive the influence of torque or vibrations to reduce.

Preferably, the expansion bead or the lock seat is connected to the quick-change bracket or the vehicle beam in a floating manner.

Preferably, the expanding bead comprises a connecting column and a plurality of locking balls, and the locking balls can move on the connecting column, so that the locking balls are exposed out of the outer surface of the connecting column or contract towards the inner part of the connecting column, and the locking balls are propped against and locked on the lock seat or the expanding bead and the lock seat are unlocked mutually.

In this scheme, realize locking ball and lock seat's cooperation through the removal of locking ball for the spliced pole, and then realize rising pearl and lock and unblock of lock seat.

Preferably, the expanding bead further comprises a driving assembly, wherein the driving assembly is arranged in the connecting column and connected with the locking ball, the lock seat is provided with a locking cavity for accommodating the connecting column and the locking ball, and the driving assembly is used for driving the locking ball to move between a locking position and an unlocking position;

when the locking ball is positioned at the locking position, the locking ball is exposed out of the outer surface of the connecting column and is clamped with the inner side wall of the locking cavity;

when the locking ball is located at the unlocking position, the locking ball contracts towards the inside of the connecting column and resets to the inside of the connecting column.

In the scheme, when the battery pack is required to be locked on the battery-changing vehicle, the connecting column and the locking ball can extend into the locking cavity, and the locking ball is driven by the driving assembly to extend out of the connecting column and be clamped with the inner side wall of the locking cavity, so that locking is realized; when the battery pack is required to be unlocked from the battery-powered vehicle, the locking ball is driven by the driving assembly to reset to the inside of the connecting column, so that unlocking is realized. The locking and unlocking operations are simple and convenient, and the locking and unlocking efficiency of the battery pack is improved.

Preferably, the driving assembly comprises a driving bolt and a driving ball, the driving ball is arranged at one end of the driving bolt facing the locking ball, the driving ball is located in the connecting column and is in butt joint with the locking ball, an internal thread is arranged in the connecting column and matched with the driving bolt, and the driving bolt is used for controlling the driving ball to apply acting force to the locking ball so that the locking ball at least partially stretches out of the locking cavity through adjusting the spiral length of the connecting column.

In the scheme, when the locking operation of the battery pack is performed, the driving bolt is rotated to enable the driving bolt to move towards the direction close to the driving ball relative to the connecting column, and the driving ball is continuously lifted, so that the driving ball can squeeze the locking ball, and the locking ball extends out of the connecting column and is clamped with the inner side wall of the locking cavity to realize locking; when the unlocking operation of the battery pack is carried out, the driving bolt is rotated along the opposite direction to enable the driving bolt to move away from the driving ball relative to the connecting column, the driving ball does not squeeze the locking ball after losing the external force action of the driving bolt, and the locking ball is reset to the inside of the connecting column to realize unlocking. Through the setting of drive bolt and drive ball for the locking and unlocking of pearl that rises are more convenient.

Preferably, the structure of the expanding bead locking mode further comprises an anti-rotation and anti-return structure, and the anti-rotation and anti-return structure is connected with the expanding bead and/or the lock seat so as to prevent relative rotation movement between the expanding bead and the lock seat.

In this scheme, prevent changeing the stopping structure and avoided rising pearl and lock seat and produce relative rotation when the cooperation, and then guaranteed the stability that battery package and trading car are connected.

Preferably, the anti-rotation anti-return structure is used for limiting the rotation of the expanding bead relative to the lock seat in a matching mode of one of ratchet pawls, expanding beads, clamping and meshing. Preferably, the plurality of locking members are disposed at the top of the battery pack, or the plurality of locking members are disposed at both sides of the battery pack in the length direction and/or the width direction thereof.

In this scheme, the locking piece can be set up at the top or the side of battery package according to actual need. The locking part is arranged on the side of the battery pack, and the locking position or the locking position of the battery pack is arranged on the side of the battery pack, so that the space in the height direction of the battery pack is not occupied, and the height between the bottom of the vehicle body of the battery-powered vehicle and the ground is guaranteed. In addition, the locking position is arranged at the side part, so that the operation space is larger, and the reliable locking of the battery pack is conveniently realized. The locking piece not only can be arranged on two sides of the length direction of the battery pack, but also can be arranged on two sides of the width direction of the battery pack, the setting position is flexible, and the locking piece can be adjusted according to the actual locking or arrangement mode. Particularly, when the locking pieces are arranged on two sides of the battery pack in the length direction, more space is available for arranging the locking pieces, namely more locking pieces can be arranged, and the locking reliability is improved.

Preferably, a plurality of the locking members are located at or below the middle of the side surface of the battery pack in the height direction of the battery pack.

In this scheme, to the mode of vertical connection, the electricity is connected and is usually set up at the top surface of battery package, and locking position or locking position are located the top when the locking piece is located the side top of battery package, and when the vehicle acceleration of trading or emergency brake, less to the influence at the top of battery package, be favorable to guaranteeing the reliability of locking and electricity connection. When the locking piece is positioned at the bottom of the side face of the battery pack, the unlocking mechanism on the battery replacing equipment is easier to arrange, and unlocking is more convenient. The locking piece is arranged in the middle of the side face of the battery pack, so that the locking reliability, the convenience of structural arrangement and the like can be simultaneously considered.

Preferably, the locking piece comprises a locking shaft, the locking shaft is provided with a shaft body, the axial direction of the shaft body extends outwards from the battery pack in the vertical direction, and the battery pack is independently locked at the bottom of the vehicle body of the battery-powered vehicle in the vertical direction through the shaft body; the lock shaft is an expansion bead, and the shaft body is a connecting column of the expansion bead.

In the scheme, the axial direction of the shaft body is perpendicular to the mounting surface of the lock shaft, so that the battery pack can be conveniently locked and mounted.

Preferably, the shaft body has a fixed end and a free end along an axial direction thereof, the fixed end is detachably connected with a side wall of the battery pack, and the free end extends out of the battery pack along a vertical direction.

In this scheme, the stiff end is connected with the lateral wall of battery package can be dismantled, need not to rely on other comparatively complicated connection structure, is favorable to simplifying the structure of quick change battery, and conveniently dismantles at any time according to actual need.

Preferably, the battery pack comprises a box body and a battery body positioned in the box body; the box is frame construction, in frame construction with the position department that the stiff end corresponds is provided with the mounting panel, be equipped with a plurality of first mounting holes on the mounting panel, be equipped with a plurality of second mounting holes on the stiff end, the stiff end pass through the second mounting hole the connecting piece of first mounting hole can dismantle connect in on the mounting panel.

In this scheme, the box adopts frame construction, can reliably support and protect the battery body on the basis of reduce cost and weight. The setting of mounting panel not only conveniently realizes the connection of lock axle and box, can increase the area of contact of stiff end and box again, is favorable to improving the connection reliability of lock axle and battery package. In addition, the setting of mounting panel can also play the effect of increase box intensity.

Preferably, the upper surface of the battery pack is provided with a concave structure, and the mounting plate is arranged on the bottom surface of the concave structure;

or, the mounting plate is arranged on the side surface of the box body.

Preferably, through holes are formed in the mounting plate and/or the battery pack at positions corresponding to the locking pieces, and the through holes are used for allowing external unlocking equipment to enter or accommodating unlocking linkage pieces.

In the scheme, the external unlocking device can extend into the mounting frame through the through hole and act on the corresponding structure of the locking piece to realize unlocking and locking; or is used for accommodating the unlocking linkage piece, so that the operation of the external unlocking equipment is facilitated.

Preferably, the battery pack is further provided with an electrical connector, and the electrical connector is arranged at the middle position of the top of the battery pack.

In this scheme, adopt above-mentioned structure setting, be convenient for realize that electric connector carries out electric connection with car end electric connector, also be convenient for the wiring, set up electric connector in the minimum battery package top intermediate position department of rocking for electric connection is more reliable. The middle position of the top of the battery pack is also the position with the minimum shaking amplitude, and the electric connector is arranged at the position, so that the connection is more reliable.

A battery-changing vehicle comprising a quick-change battery as described above and the vehicle body.

Preferably, the vehicle body of the battery-changing vehicle is provided with a vehicle beam, and the battery pack is arranged below the vehicle beam, or the battery pack part extends upwards and protrudes out of the bottom of the vehicle beam; the vehicle beam is a vehicle body longitudinal beam.

In this scheme, according to actual design demand, the battery package can be located the below of roof beam, also can only partly be located the below of roof beam of battery package, and the design is more nimble.

Preferably, the vehicle body is provided with two side-by-side and spaced-apart vehicle beams, and the battery pack part extends upwards and protrudes from the outer sides of the two vehicle beams and/or between the two vehicle beams to the bottom of the vehicle beams.

In this scheme, when only a part of battery package is located the below of roof beam, can be the part that is located the outside of two roof beams in the battery package and bulge in the bottom of roof beam, also can be the part that is located between two roof beams in the battery package and bulge in the bottom of roof beam, the design is more nimble, can adapt to multiple different design needs.

Preferably, two adjacent battery packs are arranged at intervals;

and/or a buffer piece is arranged between two adjacent battery packs.

In this scheme, adjacent battery package interval sets up, can prevent to take place collision or friction between the battery package, is favorable to protecting the battery package, improves the life of battery package. In addition, the battery packs are spaced, and the battery packs are convenient to replace by the battery replacement equipment. The buffer piece is arranged between the adjacent battery packs, so that the rigid collision between the battery packs can be prevented, the battery packs can be protected, and the service life of the battery packs is prolonged.

Preferably, the locking piece comprises a locking shaft, and the locking shaft is an expansion bead;

the battery-powered vehicle further comprises a locking mechanism arranged at the bottom of the vehicle body of the battery-powered vehicle, the locking mechanism comprises a locking part, the locking part is a lock seat, the locking part is provided with a channel for a lock shaft of a locking piece to enter, the lock shaft can vertically move upwards to a locking position after entering the channel, and the locking part locks the lock shaft at the locking position.

In the scheme, the locking piece is positioned in the channel of the locking part in the process of moving to the locking position after entering the channel, so that the stability of the locking piece in the locking process is guaranteed. In addition, after the locking piece of the battery pack enters the channel, the locking piece moves vertically upwards until being locked at the locking position, the movement process of the battery pack is simpler, and the battery pack is beneficial to improving the power conversion efficiency.

Preferably, the battery-powered vehicle further comprises a guide mechanism, wherein the guide mechanism comprises a guide piece arranged on the battery pack and a guide matching piece arranged at the bottom of the vehicle body of the battery-powered vehicle and matched with the guide piece;

the guide piece is at least arranged on the side surface of the battery pack where the locking piece is arranged; the guide piece and the locking piece are arranged at intervals on the side surface of the battery pack where the locking piece is located;

when the battery pack is connected with the battery changing vehicle, the guide piece and the guide matching piece are matched and connected with the locking mechanism before the locking piece.

In the scheme, the guide mechanism is convenient for realizing the installation of the quick-change battery and the battery-change vehicle, and the installation reliability can be ensured; the guide piece and the locking piece are arranged at intervals, so that the battery pack connection process is more stable; when the battery packs are connected, the guiding can be realized to act before the locking, so that the locking is smoother.

Preferably, the battery-powered vehicle further comprises a quick-change bracket connected to the vehicle body of the battery-powered vehicle, and the locking mechanism is mounted on the quick-change bracket.

In this scheme, the battery package is connected to the automobile body of trading the electric vehicle through quick change support, and convenient connection just is favorable to protecting the battery package.

Preferably, the quick-change bracket is an integral quick-change bracket, and a plurality of corresponding battery pack accommodating areas are arranged corresponding to each battery pack; or, the quick-change bracket comprises a plurality of split brackets, and the split brackets are respectively connected to the vehicle body and correspond to the battery packs one by one.

In this scheme, according to actual design demand, can set up the quick change support into integral quick change support, also can set up the quick change support into split type support. The integral bracket can integrally accommodate a plurality of battery packs, and is convenient to install and detach. The split type bracket corresponds to a single battery pack, and when a certain battery pack needs to be replaced or maintained, the corresponding single battery pack only needs to be disassembled.

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

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:

the quick-change battery can be arranged on the beam below the vehicle for changing the electricity through the battery pack bracket, so that the battery pack can be disassembled and assembled from the bottom of the vehicle for changing the electricity, and the technical problems of high electricity changing cost and inconvenient electricity changing caused by the fact that the battery pack is arranged above the vehicle body by an electric heavy-truck or light-truck vehicle in the prior art can be effectively solved; the single battery pack of the quick-change battery is smaller in volume and weight, convenient to install and capable of reducing the requirements on the battery replacement equipment; the plurality of battery packs are arranged along the length direction of the battery changing vehicle, so that the structure is compact, and the installation space is saved; each battery pack is independently locked at the bottom of the vehicle body of the battery replacement vehicle in a bead expansion locking mode, the disassembly and the assembly are not affected, the disassembly and the assembly flexibility are higher, the bead expansion locking mode is simple to operate, a more complex battery replacement process is not needed, the requirement on battery replacement equipment is reduced, and the locking efficiency and the locking reliability of the battery packs are higher; each battery pack is connected to the bottom of the vehicle body of the battery replacement vehicle along the vertical direction, so that the battery packs can be conveniently disassembled and assembled, and the disassembly and assembly efficiency of the battery packs is improved.

Drawings

Fig. 1 is a schematic structural diagram of a battery-powered vehicle according to embodiment 1 of the present invention.

Fig. 2 is a schematic top view of a battery pack according to embodiment 1 of the present invention.

Fig. 3 is a schematic diagram illustrating a bottom view of a battery pack according to embodiment 1 of the present invention.

Fig. 4 is a schematic structural diagram of a buffer and a limiting structure according to embodiment 1 of the present invention.

Fig. 5 is a schematic perspective view of an elastic member according to embodiment 1 of the present invention.

Fig. 6 is a front view of the elastic member of embodiment 1 of the present invention.

Fig. 7 is a side view of the elastic member of embodiment 1 of the present invention.

Fig. 8 is a schematic diagram showing the internal structure of the battery pack and lock base according to embodiment 1 of the present invention.

Fig. 9 is a schematic diagram showing another internal structure of the battery pack and lock base of embodiment 1 of the present invention.

Fig. 10 is a schematic structural view of a battery pack according to embodiment 2 of the present invention.

Fig. 11 is a schematic view showing a partial structure of a battery pack according to embodiment 2 of the present invention.

Reference numerals illustrate:

the battery pack 1, the box body 2, the long side 111, the short side 112, the step 22, the step bottom 221, the step side wall 222, the through hole 23 and the mounting plate 3;

the locking piece 200, the expanding bead 210, the connecting column 211, the locking ball 212, the guide protrusion 213, the driving bolt 214, the driving ball 215, the third limiting step 216, the mounting sleeve 75, the first limiting step 751, the second limiting step 752, the locking seat 220, the locking groove 221 and the locking cavity 222;

Buffer 20, limit member 101, elastic member 201, mounting portion 203, mounting hole 204, protrusion portion 2111, upper inclined surface 2112, lower inclined surface 2113, left inclined surface 2114, right inclined surface 2115, free end 218, and engagement portion 219;

the battery pack end electric connector 4, the battery pack end water gap 5, the car beam 7 and the quick-change bracket 8.

Detailed Description

The invention will now be more fully described by way of example only and with reference to the accompanying drawings, but the invention is not thereby limited to the scope of the examples described.

Example 1

The embodiment of the invention provides a quick-change battery, which comprises a plurality of battery packs 1 arranged along the length direction of a battery-changing vehicle, wherein each battery pack 1 is provided with a plurality of locking pieces 200, and each battery pack 1 is independently locked at the bottom of the vehicle body of the battery-changing vehicle in a vertical direction through the locking pieces in a bead expansion locking mode. As shown in fig. 1, a battery pack 1 is used to connect with and power a battery-powered vehicle. The battery pack 1 is arranged at the bottom of the vehicle body of the battery-powered vehicle, so that external battery-powered equipment can enter the bottom of the battery-powered vehicle, and battery-powered operation is facilitated.

As shown in fig. 2, a plurality of locking members 200 are provided at the top of the battery pack 1, and the locking members 200 include expansion beads 210, and when the battery pack 1 is locked to the battery-powered vehicle, the expansion beads 210 of the battery pack 1 move from bottom to top and are locked to the locking mechanism of the battery-powered vehicle in an expansion bead locking manner.

In this embodiment, the locking member 200 is disposed at the top of the battery pack 1, so that the locking member 200 at the end of the battery pack 1 located below and the locking mechanism on the battery-changing vehicle located above can be located at a position spatially opposite to each other, thereby implementing a locking and unlocking mode directly above and below, and improving the locking and unlocking efficiency; the provision of the lock member 200 at the top of the battery pack 1 more effectively reduces the shock of vibration to which the battery pack 1 is subjected during running, than in the case where the lock member 200 is provided at or near the bottom of the battery pack 1.

In other alternative embodiments, the locking member 200 may be provided at both sides of the battery pack 1 in the length direction and/or the width direction thereof according to actual design requirements.

When the locking member 200 is disposed on the side of the battery pack 1, the locking position or the locking position of the battery pack 1 is on the side, which does not occupy the space of the battery pack 1 in the height direction, and is beneficial to ensuring the height between the bottom of the vehicle body of the battery-powered vehicle and the ground. In addition, the locking position or the locking position is arranged at the side part, so that the operation space is larger, and the reliable locking of the battery pack is conveniently realized. The locking members 200 may be disposed on both sides of the battery pack 1 in the longitudinal direction or on both sides of the battery pack 1 in the width direction, and the setting positions are flexible and may be adjusted according to the actual locking or arrangement manner. Particularly, when the locking members 200 are provided at both sides of the battery pack 1 in the length direction, there is more space for providing the locking members 200, i.e., more locking members 200 can be provided, which is advantageous in improving the reliability of locking.

In other alternative embodiments, the plurality of locking members 200 may be located at or below the middle of the side of the battery pack 1 in the height direction of the battery pack 1. For the vertical connection mode, the electrical connection is usually disposed on the top surface of the battery pack 1, when the locking member 200 is located at the top of the side surface of the battery pack, the locking position or the locking position is located at the top, and when the vehicle is accelerated or suddenly braked, the influence on the top of the battery pack is less, which is beneficial to ensuring the reliability of locking and electrical connection. When the locking piece 200 is positioned at the bottom of the side face of the battery pack, the unlocking mechanism on the battery exchange equipment is easier to arrange, and unlocking is more convenient. And the locking member 200 is provided at the lateral middle part of the battery pack, so that both locking reliability and convenience in structural arrangement can be simultaneously achieved.

In the present embodiment, the battery pack 1 can be independently locked to the bottom of the vehicle body of the battery-powered vehicle by the plurality of locking members 200, and the manner of locking the battery pack 1 is relatively simple. In addition, the battery pack 1 is vertically connected to the bottom of the vehicle body of the battery replacement vehicle, and only vertical movement can be performed in the battery pack locking process, namely, the battery pack is directly upwards and downwards, so that the movement mode is relatively simple, and the locking efficiency of the battery pack 1 is improved. The battery pack in this application adopts X to (vehicle length direction) branch case, and X is to the branch case be difficult for producing the unbalanced load at the power conversion in-process, also can not cause the unbalanced load of vehicle under the condition of only connecting partial battery pack moreover, and the mode of use is more nimble, and the suitability is better. The mode of the expanding bead locking is simple to operate, a more complex power conversion process is not needed, the requirements on power conversion equipment are reduced, and the locking efficiency and the locking reliability of the battery pack are both higher.

The embodiment discloses a structure of pearl locking mode rises, this structure of pearl locking mode rises can be applied to in the locking of battery package 1 and trading vehicle, and the structure of pearl locking mode rises includes locking piece 200 and locking mechanism, and locking piece 210 includes and rises pearl 210, and locking mechanism includes lock seat 220, rises and can dismantle the connection between pearl 210 and the lock seat 220 in order to realize with battery package 1 independent locking in trading vehicle's bottom.

In specific implementation, the expansion bead 210 can move from bottom to top (or the lock seat 220 can move from top to bottom), so that the locking between the expansion bead 210 and the lock seat 220 is realized, and further, the locking with a battery-changing vehicle is realized. Accordingly, the expansion bead 210 moves from top to bottom (or the lock base 220 moves from bottom to top), so that unlocking between the expansion bead 210 and the lock base 220 can be realized, and the battery pack 1 can be separated from the vehicle for replacing.

As shown in fig. 2, 8 and 9, the expansion bead 210 includes a connecting column 211 and a plurality of locking balls 212, and the plurality of locking balls 212 can move on the connecting column 211, so that the plurality of locking balls 212 are exposed out of the outer surface of the connecting column 211 or shrink toward the inside of the connecting column 211, so as to realize that the locking balls 212 are propped against and locked on the lock seat 220 or the expansion bead 210 and the lock seat 220 are mutually unlocked.

Specifically, as shown in fig. 2, the connection post 211 is connected to the battery pack 1 and extends in the vertical direction. As shown in fig. 8 and 9, a plurality of locking balls 212 are provided around the circumferential direction of the connection post 211 and are provided at the upper portion of the connection post 211. Accordingly, as shown in fig. 8, the lock base 220 has a locking chamber for receiving the connection post 211 and the locking ball 212, and a locking groove 221 matched with the locking ball 212 is provided on an inner sidewall of the locking chamber of the lock base 220. The locking ball 212 can move relative to the connection post 211 along the radial direction of the connection post 211, so that the locking ball 212 protrudes from the outer sidewall of the connection post 211 to contact or cooperate with the locking groove 221 when locked; when unlocking, the locking ball 212 is retracted into the connection column 211 and is disengaged from the locking groove 221.

Further, the plurality of locking balls 212 can be uniformly arranged around the circumferential direction of the connecting column 211, so as to promote the balance of stress after the connection between the expansion bead 210 and the lock base 220, and promote the stability of locking. As shown in fig. 2, the expansion bead 210 is provided with four locking balls 212, and the four locking balls 212 are uniformly arranged along the circumferential direction of the side wall of the connecting column 211.

Specifically, when the locking operation of the battery pack 1 is performed, the locking balls 212 are driven to partially expose the connection posts 211 and are engaged with the inner side walls of the locking chambers 222 of the locking base 220, thereby achieving locking; when the unlocking operation of the battery pack 1 is performed, the locking balls 212 are reset to the inside of the connecting column 211, so that the expansion beads are separated from the lock base 220, and unlocking is achieved. Through the above structure, the locking and unlocking of the expansion bead 210 and the lock seat 220 are more convenient and quick.

In this embodiment, the connecting post 211 is a hollow post, and the connecting post 211 is provided with a plurality of locking grooves 221, the locking grooves 221 are arranged in one-to-one correspondence with the locking balls 212, and the diameter of the locking grooves 221 is smaller than that of the locking balls 212, so that the locking balls 212 can be partially exposed out of the connecting post 211 through the locking grooves 221, and cannot completely slip out of the connecting post 211.

In this embodiment, the number of the locking balls 212 is two, and the two locking balls 212 are disposed on opposite sides of the connecting post 211. In other alternative embodiments, the number of the locking balls 212 may be one or more, so long as the locking effect of the locking member 200 and the locking seat 220 is ensured.

As shown in fig. 8 and 9, the locking member 200 further includes a driving assembly disposed inside the connection post 211 and connected to the locking ball 212, and the lock base 220 has a locking chamber 222 for receiving the connection post 211 and the locking ball 212, and the driving assembly is used for driving the locking ball 212 to move between a locking position and an unlocking position. When the locking ball 212 is located at the locking position, the locking ball 212 is exposed out of the outer surface of the connecting column 211 and is clamped with the inner side wall of the locking chamber 222; when the lock ball 212 is located at the unlock position, the lock ball 212 is retracted toward the inside of the connection post 211 and is reset to the inside of the connection post 211.

The driving assembly further comprises a driving bolt 214 and a driving ball 215, the driving ball 215 is arranged at one end of the driving bolt 214 facing the locking ball 212, the driving ball 215 is located in the connecting column 211 and is abutted against the locking ball 212, internal threads are arranged in the connecting column 211 and matched with the driving bolt 214, and the driving bolt 214 is used for controlling the driving ball 215 to apply acting force for enabling the locking ball 212 to at least partially extend out of the locking groove 221 through adjusting the spiral length of the connecting column 211. The arrangement of the driving bolt 214 and the driving ball 215 in the embodiment makes locking and unlocking of the expanding beads more convenient.

Specifically, as shown in fig. 8 and 9, the locking member 200 further includes a mounting sleeve 75, the mounting sleeve 75 is fitted over the outer circumferential surface of the connection post 211, and the locking member 200 is connected to the battery pack 1 through the mounting sleeve 75. The outer peripheral surface of the connecting column 211 is provided with a third limiting step 216, the third limiting step 216 extends outwards from the outer peripheral surface of the connecting column 211, the inner peripheral surface of the mounting sleeve 75 is provided with a first limiting step 751 and a second limiting step 752, the first limiting step 751 and the second limiting step 752 extend inwards from the inner peripheral surface of the mounting sleeve 75, the third limiting step 216 is clamped between the first limiting step 751 and the second limiting step 752, the two axial end surfaces of the third limiting step 216 are respectively abutted with the first limiting step 751 and the second limiting step 752, movement of the connecting column 211 in the axial direction is limited, and rotation of the connecting column in the circumferential direction can be limited through surface friction force between the third limiting step 216 and the first limiting step 751 and the second limiting step 752, so that relative rotation of an expanding bead and the lock seat 220 is prevented.

The following is a brief description of the locking and unlocking process of the battery pack 1 and the quick-change bracket 8 based on the specific structure of the locking device in the above.

In the locking process, the driving bolt 214 is moved to a direction close to the driving ball 215 relative to the connecting column 211 by rotating the driving bolt 214, and the driving ball 215 is continuously lifted, so that the driving ball 215 can squeeze the locking ball 212, and the locking ball 212 extends out of the connecting column 211 and is clamped with the inner side wall of the locking cavity 222, so that locking is realized.

In the unlocking process, the driving bolt 214 is rotated in the opposite direction to enable the driving bolt 214 to move away from the driving ball 215 relative to the connecting column 211, after the driving ball 215 loses the external force action of the driving bolt 214, the locking ball 212 is not extruded any more, and the locking ball 212 is reset into the connecting column 211, so that unlocking is realized.

Further, as shown in fig. 2, 8 and 9, the top of the connection post 211 is further provided with a guide protrusion 213 so that the connection post 211 is aligned with the lock housing 220, thereby improving locking efficiency.

The structure of the bead expansion locking mode can be referred to as patent grant publication number CN210941321U, of course, the specific structure of the bead expansion locking mode is not limited to the structure of patent grant publication number CN210941321U, but may also be other structures, and is not limited specifically.

In specific implementation, according to the actual working condition requirement, one of the expansion bead 210 and the lock seat 220 can be arranged on the battery pack 1, and the other is arranged on the battery-replacing vehicle. The components connected to the battery change vehicle can be connected in particular to the quick change bracket 8 or the vehicle beam 7 of the battery change vehicle. When the quick-change bracket 8 is connected with the vehicle beam 7, so that the expanded beads 210 or the lock seats 220 are connected with the vehicle through the quick-change bracket 8, and when the expanded beads 210 or the lock seats 220 are multiple, the quick-change bracket 8 can be integrated, and the installation efficiency can be improved by being integrally installed on the vehicle beam 7 of the vehicle. Or, the expansion bead 210 or the lock seat 220 is directly arranged on the beam 7 of the battery-changing vehicle, so that the installation space can be saved, and the structure is compact.

In one embodiment, as shown in fig. 2 and 3, the expansion bead 210 is provided on the battery pack 1 as the locking member 200, and the lock base 220 is provided on the quick-change bracket 8 or the vehicle beam 7. The battery pack 1 is connected to the quick-change bracket 8 or the vehicle beam 7 in a locking way by connecting the expansion beads 210 to the lock seat 220. During locking, the external device (corresponding to the driving assembly) can drive the expansion bead 210 to move from bottom to top, so as to lock the expansion bead 210 and the lock seat 220, and further lock the battery pack 1 and the electric vehicle. During unlocking, the external device drives the expanding beads 210 and the lock bases 220 to separate from each other, so that the unlocking of the battery pack 1 is realized.

Specifically, fig. 2 shows a schematic structural diagram of the battery pack 1, where the battery pack 1 has a plurality of expansion beads 210, and for convenience in presenting the structure of the expansion beads 210, the left end and the middle expansion beads 210 are sleeved with lock bases 220 connected to the battery-replacing vehicle, and the right end of the expansion beads 210 are not sleeved with the lock bases 220. As shown in fig. 3, at the corresponding position of each expansion bead 210, the battery pack 1 has a through hole 23, and the through hole 23 extends along the vertical direction and penetrates the upper and lower surfaces of the battery pack 1, so that an external power conversion device can operate the expansion beads 210 to realize unlocking and locking. Or the through hole can be used for accommodating the unlocking linkage piece, so that the operation of the external unlocking equipment is facilitated. That is, the through hole 23 is actually an operation hole.

In another alternative embodiment, the lock base 220 is provided as the locking member 200 on the battery pack 1, and the expansion bead 210 is provided on the quick-change bracket 8 or the vehicle beam 7. During locking, the lock seat 220 can be driven by external equipment to move from bottom to top, and simultaneously rotate relative to the expansion bead 210, so that the lock seat 220 and the expansion bead 210 are locked, and the battery pack 1 and the electric vehicle are locked. During unlocking, the lock seat 220 is driven by external equipment to rotate relative to the expansion beads 210 and move from top to bottom, and the lock seat 220 is separated from the expansion beads 210, so that the unlocking of the battery pack 1 is realized.

As a preferred embodiment, the expansion bead 210 or the lock base 220 is disposed at the middle position of the battery pack 1, and the expansion bead 210 or the lock base 220 penetrates through the battery pack 1. The arrangement is beneficial to ensuring the connection stability of the battery pack 1 and the quick-change bracket 8. In addition, the expansion bead 210 or the lock seat 220 penetrates through the battery pack 1, so that the battery pack 1 can be conveniently unlocked by being in butt joint with external unlocking equipment.

As a preferred embodiment, the expansion bead 210 or the lock base 220 is floatingly connected to the battery pack 1. The floating connection can reduce the transmission of torque or vibration to the battery pack 1 when the replacement vehicle is subjected to steering torque or jolt, thereby reducing the influence of torque or vibration on the battery pack 1.

As another preferred embodiment, the expansion bead 210 or the lock base 220 is floatingly connected to the quick-change bracket 8 or the vehicle beam 7. The floating connection can reduce the torque or vibration of the vehicle when the vehicle is subjected to steering torsion or jolt from being transferred to the quick-change bracket 8 or the vehicle beam 7, so that the influence of the torque or vibration on the quick-change bracket 8 or the vehicle beam 7 is reduced.

As a preferred embodiment, the locking structure of the expansion bead 210 further includes an anti-rotation and anti-back structure (not shown) connected to the expansion bead 210 and/or the lock base 220 to prevent relative rotation between the expansion bead 210 and the lock base 220. The relative rotation generated when the expanding beads 210 are matched with the lock seat 220 is avoided, and the stability of the connection between the battery pack 1 and the quick-change bracket 8 is further ensured. In other alternative embodiments, the anti-rotation stop structure may further achieve the purpose of limiting the relative rotation between the expansion bead 210 and the lock base 220 by means of a ratchet, a pawl, and/or an expansion bead, and/or a snap, and/or engagement. More specifically, the above-mentioned engagement manner is used to limit the rotation of the driving bolt 214 relative to the lock base 220, so as to limit the relative rotation between the expansion bead 210 and the lock base 220.

In other alternative embodiments, an anti-rotation stop feature may be coupled to the lock base 220 to prevent relative rotational movement between the expansion beads 210 and the lock base 220.

As a preferred embodiment, as shown in fig. 2, locking members 200 are disposed on opposite sides of the battery pack 1, when the battery pack 1 is locked with the electric vehicle, opposite sides of the battery pack 1 can be connected with the electric vehicle, so that the gravity of the battery pack 1 is carried on both sides, the overall stress condition of the battery pack 1 is balanced, and the reliability of connection between the battery pack 1 and the electric vehicle is improved. In other embodiments, the locking member 200 may be disposed at other positions of the battery pack 1, such as at a middle position of the battery pack 1.

In the present embodiment, as shown in fig. 2, the battery pack 1 includes a case 2 and a battery body located in the case 2. The box 2 is frame construction, and the position department corresponding with the stiff end of lock axle is provided with mounting panel 3 in the frame construction, is equipped with a plurality of first mounting holes on the mounting panel 3, is equipped with a plurality of second mounting holes on the fixed end, and the stiff end can dismantle through the connecting piece that passes second mounting hole, first mounting hole and connect on the mounting panel. Wherein, the box 2 adopts the frame construction, can reliably support and protect the battery body on the basis of reduce cost and weight. The setting of mounting panel 3 not only conveniently realizes the connection of lock axle and box, can increase the area of contact of lock axle (specifically the stiff end of lock axle) and box again, is favorable to improving the connection reliability of lock axle and battery package. In addition, the installation plate 3 can also play a role in increasing the strength of the box body.

Specifically, the battery pack 1 has a long side 111 and a short side 112. The locking members 200 are two groups, and the two groups of locking members 200 are disposed on two sides of the case 2 along the extending direction of the long side 111 and/or the extending direction of the short side 112 of the case 2. Wherein each set of locking elements 200 comprises at least one locking element 200.

In a specific implementation, when the battery pack 1 has a light weight, the locking member 200 may be disposed along the extending direction of the short side 112 of the case 2, so as to meet the requirement of carrying the battery pack 1; when the mass of the battery pack 1 is heavier, compared with the extension direction of the short side 112 of the box 2, the locking pieces 200 are arranged at two sides of the box 2 along the extension direction of the long side 111 of the box 2, so that the whole weight of the battery pack 1 is more effectively borne, sagging or deformation of the box 2 at the middle position of the extension direction of the long side 111 of the box is avoided due to the fact that the bearing capacity of the locking pieces 200 is not available, and the reliability of bearing the battery pack 1 by the locking pieces 200 is improved. The two locking pieces 200 are distributed on two sides of the box body 2, so that the stress of the box body 2 is balanced, and the stability of the battery pack 1 carried by the battery pack is facilitated. As shown in fig. 2 and 3, a schematic view of the latch 200 is shown as it extends along the long side 111 of the case 2.

It should be noted that, in the exemplary embodiment, the lock shaft has a shaft body, and the axial direction of the shaft body extends outward of the battery pack in the vertical direction, and the battery pack 1 is independently locked to the bottom of the body of the battery-powered vehicle in the vertical direction by the shaft body. The axle body has stiff end and free end along its axial direction, and stiff end and the lateral wall of battery package can be dismantled and be connected, and the free end stretches out outside the battery package along vertical direction. The expansion bead 210 is a lock shaft, and a connection column 211 (see below) of the expansion bead 210 is a shaft body. The fixed end is detachably connected with the side wall of the battery pack 1 without depending on other more complex connecting structures, so that the structure of the quick-change battery is simplified, and the battery pack is convenient to detach at any time according to actual needs.

Further, as shown in fig. 2, the locking members 200 at each side of the case are provided with four beads 210, which are uniformly spaced along the length direction of the battery pack 1. Accordingly, the number of the expansion beads 210 may be adjusted accordingly according to the volume size or weight of the battery pack 1; for example, when the battery pack 1 has a small volume or the locking member 200 is provided in the extending direction of the short side 112 thereof, only one expansion bead 210, that is, only two expansion beads 210 may be provided at both ends of one side of the case 2, as needed. Moreover, the spacing arrangement distance of the expanded beads 210 can be correspondingly adjusted according to the number of the expanded beads 210, the gravity distribution of the battery pack 1, the size of the box body 2 and other factors; the axial direction of the expanding bead 210 may also have an included angle with the extending direction of the long side 111 of the box 2, and only the setting angle of the locking mechanism needs to be correspondingly adjusted at this time, which is not described herein.

As shown in fig. 2, the expansion beads 210 of the locking pieces 200 at both sides are disposed in one-to-one correspondence, so that the locking pieces 200 at both sides form a symmetrical structure. When the battery pack 1 is locked and unlocked with the replacement vehicle, the actions of the two-side locking pieces 200 are identical, and the unlocking and locking efficiency and reliability are improved.

As shown in fig. 2, the upper surface of the case 2 is provided with a concave structure, the locking member 200 is provided in the concave structure, and the connection position of the lock shaft and the mounting plate 3 is not higher than the upper surface of the case 2. By arranging a concave structure on the upper surface of the box body 2 and arranging the locking piece 200 in the concave structure, the space of the concave structure is utilized to install and fix the locking piece 200, and the ground clearance of the battery pack 1 after being connected to a battery-changing vehicle is improved; the connecting position of the lock shaft and the mounting plate 3 is not higher than the upper surface of the box body 2, so that the lock shaft is prevented from colliding with the vehicle body of the battery replacement vehicle, the surface structure of the battery pack 1 is kept neat, and the locking piece 200 is prevented from possibly interfering with the vehicle body of the battery replacement vehicle or other components in space.

Compared with the arrangement of the expansion bead 210 on the upper surface of the box body 2, the battery pack device has the advantages that the arrangement is adopted, when the expansion bead 210 is locked with the locking mechanism on the battery replacement vehicle, the gravity center of the battery pack 1 can be enabled to be closer to the locking mechanism, the stability of connection is improved, the distance between the battery pack 1 and the ground can be increased, and the battery replacement device outside is convenient to enter the lower part of the battery replacement vehicle to perform battery replacement operation.

As shown in fig. 2, the recessed structure is a step 22 provided on both sides of the case 2 in the extending direction of the long side 111 of the case 2. The steps 22 on the two sides of the box body 2 are used as concave structures, so that the box body 2 can be conveniently processed; the steps 22 are arranged at two sides of the box body 2 along the extending direction of the long side 111 of the box body 2, namely, the locking pieces 200 are arranged at two sides of the box body 2 along the extending direction of the long side 111 of the box body 2, so that the whole weight of the battery pack 1 is effectively borne, sagging or deformation of the box body 2 at the middle position of the extending direction of the long side 111 of the box body is avoided due to the fact that the bearing capacity of the locking pieces 200 is not available, the reliability of the battery pack 1 borne by the locking pieces 200 is improved, the stress of the box body 2 is balanced, and the stability of the battery pack 1 borne by the battery pack is facilitated.

In other embodiments, the recess may be formed in a middle or other location of the case 2 instead of the steps 22 on both sides of the case 2, as required by the specific structure.

Wherein, as shown in fig. 2, the recess structure includes a step bottom 221 and a step side wall 222, the height of the mounting plate 3 of the locking member 200 is not greater than the height of the step side wall 222, and the width of the mounting plate 3 is not greater than the width of the step bottom 221. The step 22 recessed downward is provided at both sides of the case 2 along the extending direction of the long side 111 of the case 2, so that the locking member 200 provided in the recessed structure is provided along the extending direction of the long side 111 of the case 2, more effectively carrying the entire weight of the battery pack 1. Setting the height of the mounting plate 3 to be not greater than the height of the recessed side walls so that the mounting plate 3 is below the top surface of the case 2 without protruding the top surface and possibly interfering with the mounting of other components; the width of the mounting plate 3 is set to be not greater than the width of the bottom surface of the recess so that the mounting plate 3 is located inside the side surface of the case 2 without protruding the side surface, so that the surface structure of the battery pack 1 is kept neat.

Further, as shown in fig. 2, each of the expansion beads 210 has a corresponding mounting plate 3, and when there is a problem with the expansion beads 210, the corresponding mounting plate 3 can be flexibly maintained or replaced. Specifically, the bottom of the expansion bead 210 is connected to the step bottom 221 of the concave structure through the mounting plate 3, the expansion bead 210 extends along the vertical direction, and the top of the expansion bead protrudes out of the upper surface of the box 2, so that the mounting connection position of the expansion bead 210 is consistent with the stress direction of the expansion bead 210, and the connection stability is improved.

In other embodiments, the mounting plate 3 may be a part of the battery pack 1, such as the step bottom 221, so that the expansion bead 210 can be directly connected with the battery pack 1, the structure can be simplified, and meanwhile, the space occupied by the expansion bead 210 in the vertical direction is reduced, so that the structure is more compact. In other embodiments, the mounting plate 3 of the plurality of expansion beads 210 may be a unitary structure, such as an elongated plate-like structure. More specifically, it may be a structure having a U-shaped cross section. During installation and assembly, the expansion beads 210 can be connected with the installation plate 3 first and integrally connected with the battery pack 1, so that the installation efficiency can be improved.

As shown in fig. 2, the battery pack 1 further includes a buffer member 20, and the buffer member 20 is provided on an outer side surface of the locking member 200, which is remote from the vertical plate of the battery pack 1. The height of the buffer member 20 is increased as much as possible so that the buffer member 20 is disposed between the battery pack 1 and the battery exchange vehicle in the horizontal direction, thereby preventing the mating position of the battery exchange vehicle and the top of the battery pack 1 from being impacted.

As shown in fig. 2, the battery pack 1 further includes a buffer member 20, and the buffer member 20 is provided on a side surface of the battery pack 1. When the battery pack 1 is mounted on the battery exchange vehicle, the side surface (i.e., the horizontal direction) of the box 2 is subjected to larger vibration relative to the upper and lower surface directions of the box 2 (i.e., the direction of lifting the battery pack 1), i.e., the box 2 is easy to collide with the battery exchange vehicle, and the buffer member 20 is arranged on the side surface of the box 2 along the direction of lifting the battery pack 1, so that the vibration of the battery pack 1 in the horizontal direction is effectively buffered; and may be provided on one or more sides of the case 2 as required for different vibration damping.

Specifically, the number of the cushioning members 20 is plural, and the plurality of cushioning members 20 are provided on the case 2 in at least one horizontal direction; when a plurality of cushioning members 20 are provided on the same surface of the case 2, the plurality of cushioning members 20 are provided at intervals. The plurality of cushioning members 20 are arranged on the box body 2 along at least one horizontal direction, so that vibration of the battery pack 1 by the battery-powered vehicle is cushioned in one horizontal direction or a plurality of horizontal directions; when a plurality of buffer members 20 are arranged on the same surface of the box body 2, the plurality of buffer members 20 are arranged at intervals, so that vibration impact received by different positions of the battery pack 1 is balanced, and the buffer effect is improved.

In one embodiment, the cushioning members 20 are disposed circumferentially on the sides of the housing 2. The buffer pieces 20 are circumferentially arranged on the side face of the box body 2, namely, all the side faces in the circumferential direction of the box body 2 are provided with the buffer pieces 20, different types of vibration possibly received by each side face of the box body 2 are buffered, buffering protection is more comprehensive, and the overall stability of the battery pack 1 is further improved.

In another embodiment, the buffer members 20 are provided on the side surfaces of the long sides 111 of the case 2, and a plurality of buffer members 20 are provided on both the long side 111 sides of the battery pack 1, so that the impact in the width direction of the battery pack 1 can be resisted.

In still another embodiment, as shown in fig. 2, the buffer members 20 are provided on the sides of the short sides 112 of the battery pack 1, specifically, two buffer members 20 are provided on the sides of the two short sides 112 of the battery pack 1, and the two buffer members 20 are spaced apart from both ends of the short sides 112, so that the impact applied to the battery pack 1 in the length direction can be resisted.

As shown in fig. 2, the buffer 20 is provided at the upper portion of the battery pack 1 in the direction of lifting the battery pack 1. Compared with the lower part of the battery pack 1, the upper part of the battery pack 1 is directly connected with the vehicle for replacing and is subjected to running or larger vibration generated by locking or unlocking, and the buffer piece 20 is arranged on the upper part of the battery pack 1, so that the vibration is directly and effectively absorbed, and the overall stability of the battery pack 1 is improved.

In the present embodiment, the cushioning material 20 is provided on the side surface of the case 2. The buffer pieces 20 are circumferentially arranged on the side face of the box body 2, namely, all the side faces in the circumferential direction of the box body 2 are provided with the buffer pieces 20, different types of vibration possibly received by each side face of the box body 2 are buffered, buffering protection is more comprehensive, and the overall stability of the battery pack 1 is further improved.

As shown in fig. 4-7, the damper 2020 includes an elastic member 201 and a limiting member 101, and when the battery pack 11 is connected to the battery-powered vehicle, the elastic member 201 abuts against the limiting member 101.

The elastic member 201 includes a mounting portion 203 for mounting the elastic member 201 to the inner side wall of the quick-change holder 8, and a protrusion portion 2111, the protrusion portion 2111 extending to protrude in a direction away from the inner side wall of the quick-change holder 8 with respect to the mounting portion 203. The protrusion 2111 is formed with a groove on a side facing the quick-change holder 8, and a gap defined by the groove is provided between the protrusion 2111 and an inner side wall of the quick-change holder 8 when the elastic member 201 is mounted to the quick-change holder 8. When the battery pack 11 is mounted in the quick-change holder 8, the protrusions 2111 deform toward the inner side wall of the quick-change holder 8.

The protrusion 2111 has an upper inclined surface 2112 and a lower inclined surface 2113 which are provided so as to be opposed to each other and inclined from the protruding end of the protrusion 2111 toward the mounting portion 203.

The protrusion 2111 further has a left inclined surface 2114 and a right inclined surface 2115 which are provided so as to be opposed to each other and inclined from the protruding end of the protrusion 2111 toward the mounting portion 203.

These inclined surfaces provide the protrusions 2111 with better elasticity and better guiding properties to cushion the impact of the battery pack 1.

In the present embodiment, the elastic member 201 includes two protrusions 2111 distributed along the vertical direction. The mounting portion 203 is provided between two adjacent protrusions 2111.

By providing a plurality of protrusions 2111, the elasticity thereof can be ensured well. However, the present invention is not limited thereto, and the number of the protrusions 2111 may be set as needed, or may be set to one or three or more, and the number of the protrusions 2111 does not affect the realization of the function thereof.

In the present embodiment, the upper end of the elastic member 201 is a free end 218, and the free end 218 is connected to one side of the upper inclined surface 2112 of the protrusion 2111. The free end 218 may be a plate-like structure that conforms to the inside wall of the quick-change bracket 8, or the free end 218 may be a plate-like structure that has a gap with the quick-change bracket 8. The elastic member 201 has an engaging portion 219 at a lower end thereof, and the engaging portion 219 engages with an inner wall of the quick-change bracket 8.

As shown in fig. 6 and 7, the engagement portion 219 is formed to be bent toward the inner side wall of the quick-change bracket 8 of the electric vehicle. Alternatively, the engaging portion 219 may be formed in a hook shape, which hooks the lower surface of the inner side wall of the quick-change bracket 8, thereby facilitating positioning and mounting of the elastic member 201 with respect to the quick-change bracket 8, and further limiting movement of the elastic member 201 with respect to the quick-change bracket 8. The connection between the engaging portion 219 and the protruding portion 2111 is an arc surface 23, and when the limiting member 101 is engaged from below the elastic member 201, the arc surface 23 facilitates the engagement of the limiting member 101, and prevents the interference of the bottom structure of the elastic member 201 to the upward movement of the limiting member 101.

In other embodiments, the engaging portion 219 may have other shapes that can engage with the inner wall of the quick-change bracket 8. Alternatively, a corresponding groove or the like may be provided in the inner side wall of the quick-change holder 8 to engage with the engagement portion 219.

In other embodiments, the engagement portion 219 may be disposed at an upper end of the elastic member 201, and a lower end of the elastic member 201 is the free end 218. Alternatively, the elastic member 201 may be provided with engagement portions 219 at both upper and lower ends thereof.

Alternatively, the engagement portion 219 may not be provided, so that both the upper and lower ends of the elastic member 201 are free ends 218.

The mounting portion 203 is provided with a mounting hole 204, and the elastic member 201 is fixed to the inner side wall of the quick-change bracket 8 by a screw member. Alternatively, the mounting portion 203 may be fixed to the quick-change holder 8 by other means.

In this embodiment, the elastic member 201 is made of metal, and in other embodiments, the buffer 2020 may have other structures capable of buffering, and the buffer 2020 may also be made of other elastic materials.

As shown in fig. 2, the battery pack 1 further includes a pack-end electrical connector 4 for communicating with the car-end electrical connector of the battery replacement vehicle, the pack-end electrical connector 4 being provided on the upper surface or side surface of the case 2 in the direction in which the battery pack 1 is lifted. When the battery pack end electric connector 4 is arranged on the side surface of the box body 2, the requirement of connecting the electric connector on the side surface can be met; when the battery pack end electric connector 4 is arranged on the upper surface of the box body 2 along the direction of jacking the battery pack 1, the battery pack end electric connector 4 and the corresponding vehicle end electric connector on the battery exchange vehicle form a relative position relationship, so that the insertion or separation of the electric connector can be realized in a straight up-down motion mode, the connection mode is simple, and the reliability is high.

Specifically, the battery pack end electrical connector 4 is provided on the upper surface of the case 2, and is close to one end of the case 2 in the present embodiment.

In an alternative embodiment, the battery pack-end electrical connector 4 may also be provided at a top intermediate position of the case 2, as shown in fig. 10 below. The arrangement is convenient for realizing that the battery pack end electric connector 4 is electrically connected with the vehicle end electric connector, wiring is also convenient, and the battery pack end electric connector 4 is arranged at the middle position of the top of the battery pack with minimum shaking, so that electric connection is more reliable. The middle position is also the position with the minimum shaking amplitude, and the battery pack end electric connector 4 is arranged at the middle position, so that the connection is more reliable.

As shown in fig. 2, the battery pack 1 further includes a battery pack terminal water gate 5 for connection with a vehicle terminal water gate on the battery-changing vehicle, and the battery pack terminal water gate 5 is provided on the upper surface or side surface of the case 2 in the direction of lifting the battery pack 1. When the battery pack water receiving port 5 is arranged on the side surface of the box body 2, the requirement of the side surface for communicating the water receiving port can be met; when the battery pack water receiving port 5 is arranged on the upper surface of the box body 2 along the direction of jacking the battery pack 1, the battery pack water receiving port 5 and the corresponding vehicle end water receiving port on the battery exchange vehicle form a relative position relationship, so that the direct up-down movement mode not only meets the locking or unlocking of the battery pack 1, but also realizes the communication of the water receiving port, the connection mode is simple, the communication distance is shortened, and the efficiency is improved.

This embodiment still provides a trading electric vehicle, as shown in fig. 1, trades electric vehicle and includes automobile body, quick change support 8, locking mechanism and foretell battery package 1, and quick change support 8 is connected in the automobile body, and locking mechanism sets up on quick change support 8, and battery package 1 can dismantle through its lock axle through rising pearl locking mode and locking mechanism and be connected on quick change support 8. The battery pack 1 is adopted by the vehicle for replacing, so that a locking and unlocking mode of direct up and down is realized; the reliability of the lock shaft connection is improved, the vibration of the battery pack 1 is reduced, and the service life of the lock shaft is prolonged.

It should be noted that, the battery pack 1 is provided with the locking member 200, and the locking member 200 includes a locking shaft, and in a preferred embodiment, the locking shaft is an expansion bead 210. The locking mechanism includes a locking portion, which is a lock seat 220, and has a passage through which the lock shaft of the locking member 200 enters, and can vertically move upward to a locking position after the lock shaft enters the passage, and the locking portion locks the lock shaft located at the locking position.

Wherein, in the process that the locking piece 200 moves to the locking position after entering the channel, the locking piece 200 is located in the channel of the locking part, which is beneficial to ensuring the stability of the locking piece 200 in the locking process. In addition, after the locking member 200 of the battery pack 1 enters the passage, the locking member moves vertically upwards until being locked at the locking position, so that the movement process of the battery pack 1 is simpler, and the battery pack 1 is beneficial to improving the power conversion efficiency.

As shown in fig. 1, the battery exchange vehicle includes a plurality of battery packs 1, the plurality of battery packs 1 are arranged along the length direction of the battery exchange vehicle, and the long sides 111 of the battery packs 1 are perpendicular to the length direction of the battery exchange vehicle. The plurality of battery packs 1 are distributed along the length direction of the battery exchange vehicle, and the long sides 111 of the battery packs 1 are perpendicular to the length direction of the battery exchange vehicle, so that the longer space of the vehicle in the length direction is fully utilized, more battery packs 1 can be distributed, and the space utilization rate and the capacity of the battery packs 1 are improved. The long side 111 of the battery pack 1 is perpendicular to the length direction of the vehicle, so that the side surface of the long side 111 with a larger area on the box body 2 can be used for bearing the impact on the battery pack 1 in the running direction of the vehicle, and the protection of the battery pack 1 is facilitated.

Further, the battery pack 1 is located below the quick-change bracket 8. The battery pack 1 is arranged below the quick-change bracket 8, so that the locking mechanism of the quick-change bracket 8 positioned above and the locking shaft of the battery pack 1 positioned below form an upper and lower relative position, and the battery pack 1 is adopted by the battery replacement vehicle, so that a specific locking and unlocking mode of directly and directly lifting is realized, and the mode of replacing electricity from the bottom of the vehicle is realized.

Specifically, the battery-powered vehicle is an electric truck. The quick-change bracket 8 is arranged on the beam 7 of the battery-change vehicle.

The electric truck requires more energy than a passenger car, and the power supply amount and volume of the battery pack 1 are also larger. When the electric truck is subjected to power change operation, the battery pack 1 is adopted to realize a direct up-down locking and unlocking mode, so that the locking and unlocking steps can be simplified, the power change efficiency can be improved, the shaking of the battery pack 1 in the power change process caused by excessive power change steps can be avoided, and the reliability of power change is improved; furthermore, the energy consumption of the external power conversion equipment during power conversion can be reduced.

As shown in fig. 1, the battery pack 1 is specifically disposed below a vehicle beam 7, and the vehicle beam 7 may be a vehicle body side member. In an alternative embodiment, the battery pack 1 may also be partially extended upward to protrude from the bottom of the vehicle beam 7.

When only a part of the battery pack 1 is located below the vehicle beams 7, the part of the battery pack located outside the two vehicle beams 7 may be protruded from the bottom of the vehicle beams 7, or the part of the battery pack located between the two vehicle beams may be protruded from the bottom of the vehicle beams, so that the design is flexible, and various different design requirements can be met.

Further, when the battery pack 1 is partially extended upward, it may protrude from the outside of the two vehicle beams 7 and/or between the two vehicle beams 7 to the bottom of the vehicle beam 7. By the arrangement, the flexibility of design is further improved, and more arrangement requirements can be realized so as to adapt to different design requirements.

As shown in fig. 1, in a preferred embodiment, two adjacent battery packs 1 are disposed at a spacing therebetween, and/or a buffer is disposed between two adjacent battery packs 1. Wherein, adjacent battery package interval sets up, can prevent to bump or rub between the battery package 1, is favorable to protecting the battery package 1, improves the life of battery package 1. In addition, the battery packs 1 are spaced, so that the battery packs 1 can be conveniently replaced by the battery replacement equipment. The buffer piece is arranged between the adjacent battery packs 1, so that the rigid collision between the battery packs 1 can be prevented, the battery packs 1 can be protected, and the service life of the battery packs 1 can be prolonged.

In another preferred embodiment, the battery-powered vehicle further comprises a guide mechanism including a guide member provided to the battery pack and a guide mating member provided to the bottom of the vehicle body of the battery-powered vehicle and mated with the guide member. The guide is provided at least at the side of the battery pack where the locking member 200 is located. The guide member is provided at a distance from the locking member 200 on the side of the battery pack where the locking member 200 is located. When the battery pack is connected with the electric vehicle, the guide member and the guide matching member are matched and connected with the locking mechanism before the locking member.

Wherein, guiding mechanism's setting is convenient for realize quick change battery and trades the installation of electric vehicle, and can guarantee the installation reliability. The guide member is spaced apart from the locking member 200 so that the connection process of the battery pack 1 is more stable. When the battery pack 1 is connected, guiding can be realized to act before locking, so that the locking is smoother.

Further, in the present embodiment, the quick-change holder 8 is a unitary quick-change holder provided with a plurality of corresponding battery pack accommodating areas corresponding to the respective battery packs 1. The integral bracket can integrally accommodate a plurality of battery packs, and is convenient to install and detach.

In other alternative embodiments, the quick-change bracket 8 may also be configured to include a plurality of split brackets, where the split brackets are respectively connected to the vehicle body and correspond to the plurality of battery packs 1 one by one.

Wherein, split type support corresponds with single battery package 1, when certain battery package 1 need change or maintenance, only need dismantle corresponding single battery package 1 can.

That is, in different embodiments, according to different actual design requirements, the quick-change bracket can be set as an integral quick-change bracket, and also can be set as a split bracket, so that the design is more flexible.

Example 2

The embodiment provides another implementation mode of the expanding bead type locking. The structure of the quick-change battery according to this embodiment is substantially the same as that of the embodiment 1, except for the mounting manner of the locking member and the battery pack. As shown in fig. 11 and 11, the frame structure of the case 2 is provided with a mounting plate 3, and the locking member 200 is detachably attached to the mounting plate 3. Specifically, the mounting plates 3 are provided on both sides of the top of the case 2 (frame structure). The lock 200 is detachably connected to the mounting plate 3 by means of a mounting seat 24.

The locking piece 200 is arranged on the frame structure through the mounting plate 3, and the arrangement of the locking piece 200 does not influence the structure of the box body of the battery body, so that the battery pack 1 is protected. Meanwhile, a space for installing the locking member is not reserved on the case, and thus, the size of the battery pack 1 is not affected. In addition, during specific installation, a plurality of locking pieces 200 can be correspondingly connected to the mounting plate 3, and then the mounting plate 3 is installed on the frame structure, so that connection is convenient.

The mounting plate 3 and the case 2 may be connected by any suitable connection method, such as welding, screwing with fasteners, etc.

In addition, as shown in fig. 10 and 11, a through hole 23 for passing through the shaft body (i.e., the connection column 211) is provided at a position of the bottom of the mounting plate 3 corresponding to the locking member 200, specifically, a through hole 23 is provided at a position of the bottom of the mounting plate 3 corresponding to the locking member 200, and one end (serving as an unlocking linkage member) of the connection column 211, which is far away from the lock seat 220, extends out of the mounting plate 3 from the through hole 23, so that the connection with an external unlocking device is facilitated, and unlocking is further facilitated.

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

1. The quick-change battery is characterized by comprising a plurality of battery packs which are arranged along the length direction of a battery changing vehicle, wherein each battery pack is provided with a plurality of locking pieces, and each battery pack is independently locked at the bottom of the vehicle body of the battery changing vehicle in a vertical bead expansion locking mode through the locking pieces.

2. The quick change battery of claim 1, wherein the bead expansion locking means comprises a locking mechanism and a locking member, wherein the locking member comprises an expansion bead, wherein the locking mechanism comprises a locking seat, and wherein the expansion bead is detachably connected with the locking seat so as to independently lock the battery pack on a quick change bracket or a vehicle beam of the battery change vehicle.

3. The quick change battery of claim 2, wherein the expansion beads are arranged on the battery pack, and the lock seat is arranged on the quick change bracket or the vehicle beam; or the lock seat is arranged on the battery pack, and the expansion beads are arranged on the quick-change bracket or the vehicle beam.

4. A quick change battery as claimed in claim 3 wherein said bead or said lock is located in the middle of said battery pack and said bead or said lock extends through said battery pack.

5. A quick change battery as claimed in claim 3 wherein said bead or said lock base is floatingly connected to said battery pack.

6. A quick change battery as claimed in claim 3 wherein said tension bead or said lock base is floatingly connected to said quick change bracket or said vehicle beam.

7. The quick-change battery according to claim 2, wherein the expansion bead comprises a connecting column and a plurality of locking balls, wherein the locking balls can move on the connecting column, so that the locking balls are exposed out of the outer surface of the connecting column or retract into the connecting column, and the locking balls are abutted against and locked on the lock seat or the expansion bead and the lock seat are unlocked mutually.

8. The quick change battery of claim 7 wherein the expansion bead further comprises a drive assembly disposed within the connecting post and coupled to the locking ball, the lock seat having a locking chamber for receiving the connecting post and the locking ball, the drive assembly for driving the locking ball between a locked position and an unlocked position;

9. The quick change battery of claim 8, wherein the drive assembly comprises a drive bolt and a drive ball, the drive ball is disposed at an end of the drive bolt facing the locking ball, the drive ball is disposed in the connecting post and abuts the locking ball, an internal thread is disposed in the connecting post, the internal thread cooperates with the drive bolt, and the drive bolt is used for controlling the drive ball to apply a force to the locking ball to enable the locking ball to at least partially extend out of the locking chamber by adjusting the spiral length of the connecting post.

10. The quick change battery of claim 2 wherein the bead lock means further comprises an anti-rotation and anti-back structure coupled to the bead and/or the lock base to prevent relative rotational movement between the bead and the lock base.

11. The quick change battery of claim 10, wherein the anti-rotation stop structure is configured to limit rotation of the expansion bead relative to the lock base by one of a ratchet pawl, an expansion bead, a snap fit, and a mesh.

12. The quick-change battery according to any one of claims 2 to 11, wherein a plurality of the locking members are provided at the top of the battery pack, or a plurality of the locking members are provided at both sides of the battery pack in the length direction and/or the width direction thereof.

13. The quick change battery as defined in claim 12, wherein a plurality of said locking members are located at or below a lateral middle portion of said battery pack in a height direction of said battery pack.

14. The quick change battery of claim 13 wherein the locking member comprises a lock shaft having a shaft body with an axial direction extending in a vertical direction toward the battery pack exterior, the battery pack being independently locked vertically to a bottom of a body of the battery change vehicle by the shaft body; the lock shaft is an expansion bead, and the shaft body is a connecting column of the expansion bead.

15. The quick change battery as defined in claim 14, wherein the shaft body has a fixed end and a free end in an axial direction thereof, the fixed end being detachably connected to a side wall of the battery pack, the free end extending in a vertical direction outward of the battery pack.

16. The quick change battery of claim 15 wherein said battery pack comprises a housing and a battery body within said housing; the box is frame construction, in frame construction with the position department that the stiff end corresponds is provided with the mounting panel, be equipped with a plurality of first mounting holes on the mounting panel, be equipped with a plurality of second mounting holes on the stiff end, the stiff end pass through the second mounting hole the connecting piece of first mounting hole can dismantle connect in on the mounting panel.

17. The quick change battery as defined in claim 16, wherein,

the upper surface of the battery pack is provided with a concave structure, and the mounting plate is arranged on the bottom surface of the concave structure;

or, the mounting plate is arranged on the side surface of the box body.

18. The quick change battery according to claim 17, wherein the mounting plate and/or the battery pack are/is provided with through holes at positions corresponding to the locking members, the through holes being for access by an external unlocking device or for receiving an unlocking linkage member.

19. The quick change battery according to any one of claims 1-18, wherein the battery pack is further provided with an electrical connector disposed at a top intermediate position of the battery pack.

20. A battery-change vehicle characterized in that it comprises a quick-change battery according to any one of claims 1-19 and the vehicle body.

21. The battery exchange vehicle of claim 20, wherein the body of the battery exchange vehicle has a vehicle beam, the battery pack being disposed below the vehicle beam, or the battery pack portion extending upwardly and protruding from the bottom of the vehicle beam; the vehicle beam is a vehicle body longitudinal beam.

22. A battery exchange vehicle according to claim 21, wherein the vehicle body has two side-by-side and spaced apart said vehicle beams, said battery pack portion extending upwardly from the outside of and/or between said two vehicle beams to protrude from the bottom of said vehicle beams.

23. The battery-powered vehicle of claim 20, wherein:

the two adjacent battery packs are arranged at intervals;

and/or a buffer piece is arranged between two adjacent battery packs.

24. The battery powered vehicle of claim 20, wherein the locking member comprises a lock shaft, the lock shaft being a tension bead;

25. The battery exchange vehicle of claim 20, further comprising a guide mechanism including a guide member disposed on the battery pack and a guide mating member disposed on a bottom of a body of the battery exchange vehicle and mating with the guide member;

26. The battery exchange vehicle of claim 24, further comprising a quick-change bracket coupled to a body of the battery exchange vehicle, wherein the locking mechanism is mounted to the quick-change bracket.

27. The battery exchange vehicle of claim 26, wherein the quick-change bracket is a unitary quick-change bracket having a plurality of respective battery pack receiving areas for each of the battery packs; or, the quick-change bracket comprises a plurality of split brackets, and the split brackets are respectively connected to the vehicle body and correspond to the battery packs one by one.

28. The battery exchange vehicle of any of claims 20-27, wherein the battery exchange vehicle is an electric truck.