CN114683928A

CN114683928A - Battery transfer system with synchronous belt and battery replacement station or energy storage station

Info

Publication number: CN114683928A
Application number: CN202011634611.3A
Authority: CN
Inventors: 张建平; 陈新雨
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-07-01

Abstract

The invention discloses a battery transfer system with a synchronous belt and a battery changing station or an energy storage station, wherein the battery transfer system is used for transferring batteries among a plurality of battery bin positions arranged along the vertical direction of a battery frame, and comprises a battery taking and placing mechanism used for taking and placing battery packs from the battery bin positions; the guide mechanism comprises a guide assembly and at least one guide post, the guide post is arranged along the vertical direction, and the guide assembly is connected between the guide post and the battery taking and placing mechanism; a driving wheel and a driven wheel of the transmission mechanism are fixed on the guide post, the synchronous belt is sleeved on the driving wheel and the driven wheel, and two ends of the synchronous belt are fixedly connected with the battery taking and placing mechanism; the driving wheel is driven to rotate to enable the synchronous belt to move in the vertical direction so as to drive the battery taking and placing mechanism to lift and move. By adopting the invention, the battery taking and placing mechanism can be driven by the synchronous belt to lift and move along the vertical direction by clamping the vertical synchronous belt, and has the advantages of simple structure, high transmission precision, stable whole lifting process and convenient maintenance.

Description

Battery transfer system with synchronous belt and battery replacement station or energy storage station

Technical Field

The invention relates to a battery transfer system with a synchronous belt and a battery changing station or an energy storage station.

Background

Along with the restriction of the battery charging time of the electric automobile, the quick-change electric automobile is accepted by more and more users, and only a battery pack with insufficient power needs to be replaced and a battery pack with full power needs to be installed in the battery replacement station, so that the long-time battery charging time is saved. The power exchange station is provided with: the battery pack charging device comprises battery replacing equipment for disassembling or assembling batteries, a battery transferring device for transferring the battery pack and a charging device for charging the battery pack.

The existing battery transfer device generally realizes lifting movement through a guide mechanism, a transmission mechanism and a driving mechanism, so that batteries are transferred between battery bins. Chinese patent application publication No. CN110901601A discloses an AGV charging station, which adopts the principle of multi-axis linkage and the design of multi-axis system, specifically, the battery is charged by being exchanged in the X-axis, Y-axis, Z-axis and the battery pulling and pushing direction, the battery is taken out from the AGV cart, and the battery is sent into the bearing frame. Chinese patent application publication No. CN111717062A discloses a battery replacement system for heavy trucks and a method for using the same, wherein a mechanical arm on a battery replacement stacker can move under the load of a lifting device and a traversing device to pick and place batteries.

However, the transfer device disclosed in the above prior art has a complicated structure, low flexibility, and is inconvenient for expanding the design, which limits the application range thereof; moreover, the whole lifting process is not stable enough, and the conditions of inclination, clamping, collision and the like are easy to occur, so that the equipment is damaged.

In the prior art, a car for accommodating the battery is driven to lift through a driving wheel chain arranged in the guide device, the requirement on the guide structure is high, and the car needs to be maintained (oiled) regularly. And after long-term use, because the driving wheel chain is worn and torn and easily influences positioning accuracy, lead to the inaccurate location between car and the battery position in storehouse, moreover, driving wheel chain structure is fixed, and application scope is narrower, is not convenient for the extension design, also is not convenient for the direction of height to expand.

In addition, the power exchanging station or the energy storage station built in the traditional mode is of an integrated structure, related materials need to be transported to the site and then built, the power exchanging station is large in space, the corresponding building material specification is large, the transportation is not facilitated, the cost is high, the building period is long, and the later-stage extension and upgrading and transformation of power exchanging equipment are not facilitated.

Chinese patent application publication No. CN106043247A discloses a modularly extendable power station apparatus and a charging rack, wherein battery storage modules in the charging rack are stacked together in a building block manner, and a battery transfer device can pass through the battery storage modules. Chinese patent application No. CN208181025U discloses a battery compartment and a new energy vehicle power exchanging station, wherein the battery compartment has a plurality of battery racks arranged in series, and each battery rack is correspondingly provided with a lifter, or the battery racks share one lifter. However, the charging bins in the battery racks are spliced, and when the power conversion station is built, the charging bins still need to be spliced in sequence, so that the power conversion station cannot be modularized.

Disclosure of Invention

The invention aims to overcome the defects of complex structure, poor flexibility and low picking and placing efficiency of a battery transfer system in the prior art, and provides a battery transfer system with a synchronous belt and a battery changing station or an energy storage station.

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

a battery transfer system with synchronous belts, which is used for transferring batteries among a plurality of battery bins arranged along the vertical direction of a battery rack, is characterized in that,

the battery transferring system comprises a battery taking and placing mechanism, a guide mechanism and a transmission mechanism, wherein the battery taking and placing mechanism is used for taking and placing a battery pack from the battery bin; the guide mechanism comprises a guide assembly and at least one guide post, the guide post is arranged along the vertical direction, and the guide assembly is connected between the guide post and the battery taking and placing mechanism;

the transmission mechanism comprises a driving wheel, a driven wheel and a synchronous belt, the driving wheel and the driven wheel are fixed on the guide post, the synchronous belt is sleeved on the driving wheel and the driven wheel, and two ends of the synchronous belt are fixedly connected to the battery pick-and-place mechanism; the driving wheel is driven to rotate, so that the synchronous belt moves in the vertical direction to drive the battery taking and placing mechanism to lift and move.

In this scheme, the hold-in range of the vertical direction of battery pick-and-place mechanism through the centre gripping can be along vertical direction lift removal under the effect of hold-in range, and its simple structure, the transmission precision is high, and whole lift process is stable, still is convenient for maintain.

Preferably, two ends of the synchronous belt are connected to the side wall of the battery pick-and-place mechanism at a preset interval along the vertical direction.

In this scheme, the both ends of hold-in range are connected with the lateral wall that the mechanism was put to battery fetching in vertical direction, can be convenient for arrange of hold-in range, also can make the hold-in range transmit in vertical direction to the ascending and descending of drive battery fetching and putting mechanism in vertical direction.

Preferably, at least one end of the timing belt is movable in a vertical direction with respect to the battery pick and place mechanism to adjust the tension of the timing belt.

In this scheme, can realize through above-mentioned structure that the hold-in range interval is adjustable, avoid wearing and tearing the tip of driving medium because of frequent interval adjustment, it is durable to influence the use.

Preferably, two ends of the synchronous belt are respectively connected to the upper and lower end angle positions of the corresponding end part of the battery pick-and-place mechanism.

In this scheme, the both ends of hold-in range are connected in the upper and lower end angular position of battery pick and place mechanism tip, avoid the battery to pick and place the mechanism and cause at the lift in-process and rock, can make hold-in range and battery pick and place the mechanism be connected more reliable, and each tip all has driven hold-in range, also can make the transmission steady.

Preferably, the inner side surface of the synchronous belt is provided with a plurality of meshing teeth, and the meshing teeth of the synchronous belt are meshed with the meshing teeth of the driving wheel and the driven wheel.

In the scheme, the transmission precision is improved through the transmission of the meshing teeth.

Preferably, at least one transmission mechanism is arranged on each of two sides of the battery pick-and-place mechanism; the number of the guide posts is at least two, the guide posts are arranged in the middle positions of two sides of the battery picking and placing mechanism, or the guide posts are arranged at the four end positions of the battery picking and placing mechanism.

Preferably, the number of the transmission mechanisms is two, the two transmission mechanisms are arranged at the middle positions of two sides of the battery picking and placing mechanism, and the two guide posts are correspondingly arranged at the middle positions of two sides of the battery picking and placing mechanism;

or the number of the transmission mechanisms is four, the four transmission mechanisms are respectively arranged at the four end parts of the battery taking and placing mechanism, and the four guide posts are correspondingly positioned at the four end parts of the battery taking and placing mechanism.

In the scheme, the battery taking and placing mechanism is driven by the driving mechanism arranged at the middle position, so that the structure can be simplified, and the battery taking and placing mechanism can be driven stably; four ends are respectively driven by four driving mechanisms, so that the driving stability can be improved; correspondingly, four tip all are equipped with the guide post, can all lead four ends, promote stability.

Preferably, the battery transfer system further comprises a counterweight mechanism, wherein the counterweight mechanism comprises a counterweight block and a counterweight cable; the counterweight cable is used for connecting the counterweight block and the battery taking and placing mechanism so as to enable the counterweight block to balance the battery taking and placing mechanism to move up and down.

In this scheme, can balance drive mechanism through counter weight mechanism, alleviate the bearing requirement of drive mechanism when the operation, also enable battery transportation equipment when stopping in the relative position department of a certain battery compartment, can stably stop at this position department.

Preferably, the battery transfer system further comprises a top plate disposed on top of the guide mechanism; the counterweight mechanism further comprises a pulley block, the pulley block comprises a lifting pulley, a counterweight pulley and a transition pulley, the lifting pulley is connected with the battery taking and placing mechanism, the counterweight pulley is connected with the counterweight block, the transition pulley is connected with the counterweight cable, and the transition pulley is used for changing the extension direction of the counterweight cable so that the counterweight cable can pass around the lifting pulley and the counterweight pulley; the both ends of counter weight cable respectively with the roof is connected, just the counter weight cable is walked around in proper order the lift pulley the transition pulley with the counter weight pulley.

In the scheme, the lifting pulleys are arranged at the bottom of the battery taking and placing mechanism, and the outer walls of two side plates of the battery taking and placing mechanism are connected with the lifting pulleys; the counterweight cable can bypass from the lower part of the battery taking and placing mechanism, not only can balance the lifting and moving of the battery taking and placing mechanism, but also can play a role in safety. The counterweight pulley is connected to the top of the counterweight block; make the counter weight cable can walk around from the top of balancing weight, avoid taking place to interfere with the balancing weight.

Preferably, the battery transfer equipment further comprises a driving mechanism, wherein the driving mechanism comprises at least one driving motor, and the driving motor is connected with the driving wheel so as to drive the driving wheel to rotate to drive the battery taking and placing mechanism to lift and move.

Preferably, the number of the driving motors is two, the two driving motors are arranged on one side of the battery pick-and-place mechanism, and the driving motors are respectively connected with the driving wheels oppositely arranged on two sides of the battery pick-and-place mechanism so as to enable the two driving wheels oppositely arranged to synchronously rotate; the two sides of the battery taking and placing mechanism are two sides taking the telescopic direction of the battery taking and placing mechanism as an axis.

In this scheme, place driving motor in one side of battery pick and place mechanism to driving motor can two relative action wheels of simultaneous control, thereby makes driving motor's overall arrangement more reasonable, also can make the action wheel synchronous revolution that the battery picked and placed the mechanism both sides drive the battery and pick and place the mechanism and can steadily move.

Preferably, the driving mechanism includes two driving motors, the two driving motors are disposed on two sides of the battery pick-and-place mechanism along the telescopic direction of the battery pick-and-place mechanism, and an output shaft of each driving motor is connected with the corresponding driving wheel through a coaxial connector.

In the scheme, the two driving motors are respectively arranged on two sides and are symmetrically arranged, so that the structure is stable, and the stability of the system is enhanced; the coaxial connector is used for outputting one output shaft of the driving motor into a plurality of output shafts.

Preferably, the driving mechanism further comprises a coaxial connector, an output shaft of the driving motor is connected with an input end of the coaxial connector, and the coaxial connector is connected with the two driving wheels correspondingly in a penetrating manner.

In the scheme, one output shaft of the driving motor is output into a plurality of output shafts through the coaxial connectors, so that the driving wheels on two sides of the battery taking and placing mechanism rotate synchronously.

Preferably, the driving mechanism is arranged at the upper end and/or the lower end of the guide column; or the driving mechanism is arranged at the upper end and/or the lower end of the battery frame.

In the scheme, when the driving mechanism is arranged at the upper end and/or the lower end of the guide post, the driving wheel is also fixed on the guide post, so that the connection between the driving mechanism and the driving wheel is simplified; when the driving mechanism is arranged at the upper end and/or the lower end of the battery frame, the space is wide, and the installation is convenient.

Preferably, the guide posts arranged on both sides of the battery picking and placing mechanism in the telescopic direction reuse two upright posts of the battery rack facing the battery picking and placing mechanism.

In this scheme, the stand of the multiplexing one side battery frame of guiding mechanism can reduce the space extravagant on the one hand for the space is more compact, reduces area, and on the other hand battery transport system can be closer to the battery frame, reduces to get and puts the distance, promotes to get and puts efficiency.

Preferably, the battery transfer system is arranged between two rows of the battery racks arranged at intervals with a preset distance, and the battery pick-and-place mechanism is arranged to be capable of moving towards the two rows of the battery racks in a telescopic manner so as to pick and place the battery pack; the four guide columns respectively multiplex two columns of the four stand columns of the battery rack facing the battery taking and placing mechanism.

In this scheme, four stands of the battery frame of the multiplexing both sides of guiding mechanism need not to install the guide post in addition and can make battery transfer system can directly move between two relative battery frames, can improve intensity and reduce cost, and simple structure is compact, and the material resources of using manpower sparingly of installation have promoted entire system's operating efficiency. In addition, the four end parts of the battery taking and placing mechanism are guided, so that the moving stability of the battery taking and placing mechanism is improved to the maximum extent, the structure of the guide mechanism is simplified, the guide is realized completely by reusing the upright posts of the battery rack, the optimal design of the structure of the transfer equipment and the battery rack is obtained, the structural complexity is reduced, the integral structure is more compact, the strength is higher, and the occupied land resources are saved; and the battery taking and placing mechanism is convenient for taking and placing batteries on the battery racks on two sides, and the battery taking and placing efficiency is improved.

Preferably, the reused upright post has a transmission surface matched with the transmission mechanism, and/or the reused upright post has a guide surface matched with the battery taking and placing mechanism.

In this scheme, have on the stand with drive mechanism matched with transmission face, when concrete implementation, above-mentioned action wheel with from the driving wheel be fixed in on the transmission face, the hold-in range cover is established on action wheel and follow driving wheel and both ends are connected with battery pick-and-place mechanism respectively to carry out the transmission, improve the accuracy of transmission direction. The upright post can also be provided with a guide surface matched with the battery taking and placing mechanism, so that the lifting movement of the battery taking and placing mechanism is guided. Therefore, the installation of the transmission mechanism and the guidance of the battery taking and placing mechanism can be realized, the integral structure is simplified, the connection between the transmission mechanism and the battery taking and placing mechanism is more compact, the guidance strength and the cost can be improved, manpower and material resources are saved in the installation process, and the operation efficiency of the whole system is improved.

Preferably, the synchronous belt is a closed-loop structure, and the battery pick-and-place mechanism is fixedly connected with the synchronous belt through a fixing part;

the fixing part comprises a pressing block and a fixing block, and the synchronous belt is arranged between the pressing block and the fixing block; one side surface of the fixing block is provided with a tooth groove.

In this scheme, the hold-in range is closed loop structure, and the battery is got and is put the mechanism and pass through the fixed part centre gripping on the hold-in range, can not lack a certain part and power loses and make the battery get and put the mechanism and be located a certain dead point position.

Preferably, the transmission mechanism further comprises a transition wheel, the transition wheel is connected with the synchronous belt and arranged between the driving wheel and the driven wheel so as to change the extending direction of the synchronous belt and enable the synchronous belt to be attached to the surface of the guide post.

In this scheme, through the setting of transition wheel, can make the surface laminating of hold-in range and guide post, also can improve the rate of tension to a certain extent for the transmission of hold-in range is more steady.

Preferably, the guide mechanism further comprises a guide rail and a guide shoe, wherein the guide rail is arranged on the guide post and extends along the vertical direction; the guide shoe is arranged on the battery taking and placing mechanism and positioned on the guide rail, and the guide shoe can move along the extending direction of the guide rail.

In this scheme, through guide rail and guide shoe, can make the battery get put the relative guiding mechanism of mechanism and carry out the lift and move for the battery gets to put the removal of mechanism more stable.

Preferably, drive mechanism still includes spacing subassembly, spacing subassembly is followed the extending direction interval of guide post sets up, every spacing subassembly includes two spacing wheels, two spacing wheels set up respectively the both sides of hold-in range, just the outer peripheral face of spacing wheel supports the edge of hold-in range.

In this scheme, spacing round is used for playing vertical spacing effect to the hold-in range, prevents that the hold-in range from along transversely breaking away from the guide post, guarantees drive mechanism even running.

A battery replacing or energy storage station is used for replacing batteries of electric automobiles and is characterized by comprising the battery transferring system with the synchronous belt.

Preferably, the battery replacement station or the energy storage station is formed by splicing at least two box bodies up and down, and a communicating part communicated with each other up and down is arranged between the at least two box bodies;

the battery replacing station or the energy storage station further comprises battery racks, and the battery racks are arranged in the communicating part along the vertical direction; the battery rack comprises a plurality of battery bin positions arranged along the vertical direction;

the guiding mechanism of the battery transferring system is arranged in the communicating part; the battery taking and placing mechanism of the battery transfer system moves up and down along the guide mechanism so as to take and place batteries from the battery bin positions.

In the scheme, the battery replacement station or the energy storage station can be box-shaped equipment formed by vertically stacking a plurality of boxes, and the boxes are independent from each other. In the construction process, after the components in the box body are installed, the superposed box-shaped equipment is divided into an upper part and a lower part which are respectively transported, so that the road transportation requirement is met, and the on-site installation and debugging after transportation are facilitated. Moreover, the box bodies are stacked, the land area can be reduced, the land utilization rate is improved, and more battery packs can be contained in the same land area. The lower box body is communicated with the upper box body, so that the battery replacing equipment or the battery transferring equipment in the stacked box-shaped equipment moves along the height direction of the stacked box-shaped equipment without obstruction, the stacked box-shaped equipment extends in the height direction to enable the battery replacing station or the energy storage station to contain more battery packs and more types of battery packs, and the battery replacing efficiency and the operation capacity of the battery replacing station or the energy storage station can be improved.

Preferably, the battery replacing station or the energy storage station comprises a first box body arranged below, battery storage areas are arranged on two sides of the first box body, and a battery replacing area is arranged in the middle of the first box body;

the battery replacing station or the energy storage station further comprises a second box body, and the second box body is at least arranged above the battery storage area of the first box body and communicated with the battery storage area of the first box body.

In this scheme, the district is deposited for the battery to the both sides of first box, and the centre is the district that trades electricity to can follow electric vehicle's both sides and carry out the battery and get and dismantle, improve and trade electric efficiency, and also can utilize the space of both sides, the lifting utilization rate. And the second box body is at least arranged above the battery storage area of the first box body, so that the expansion of the battery bin position in the height direction can be realized, the capacity-increasing expansion design of the battery replacing station or the energy storage station is facilitated, the box bodies can be directly overlapped without building the station again, and the construction flexibility and the expandability of the battery replacing station or the energy storage station are improved.

Preferably, at least one row of the battery racks is arranged in the battery storage area;

the battery taking and placing mechanism is positioned on one side of a battery bin inlet and outlet of the battery rack; the guide mechanism is arranged along the vertical direction and corresponds to the battery bin, so that the vertical lifting of the battery taking and placing mechanism is guided to move so as to take and place batteries.

In this scheme, get through guiding mechanism and put the vertical lift removal of mechanism and lead to the battery, guaranteed that the battery gets and put stability and the accuracy that the mechanism removed, improve its and battery position in storehouse positioning accuracy between, can promote the battery and get the efficiency of putting.

Preferably, the battery picking and placing mechanism is positioned between two rows of battery racks which are oppositely arranged at a preset distance;

the guide mechanism comprises four guide columns in the vertical direction, the four guide columns are arranged at the four end positions of the battery taking and placing mechanism in a one-to-one correspondence mode, and the four guide columns are used for multiplexing the two rows of battery racks and are close to four stand columns of the battery taking and placing mechanism.

In the scheme, the guide mechanism reuses four upright posts of the battery racks on two sides, and guides the battery from four end parts of the battery taking and placing mechanism, so that the movement stability of the battery taking and placing mechanism is maximally improved, the structure of the guide mechanism is simplified, the guide is completely realized by reusing the upright posts of the battery racks, the optimal design of the structures of the transfer equipment and the battery racks is obtained, the structural complexity is reduced, the overall structure is more compact, and the occupied area resource is saved; and the battery taking and placing mechanism is convenient for taking and placing batteries on the battery racks on two sides, and the battery taking and placing efficiency is improved.

The positive progress effects of the invention are as follows: the battery taking and placing mechanism can move up and down along the vertical direction under the action of the synchronous belt through clamping the synchronous belt in the vertical direction, and is simple in structure, high in transmission precision, stable in the whole lifting process and convenient to maintain.

Drawings

Fig. 1 is a schematic structural diagram of a battery transport system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery transportation system according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a battery transportation system provided in an embodiment of the present invention, in which a transmission mechanism is removed;

fig. 4 is a schematic structural diagram of a battery transportation system provided in an embodiment of the present invention, in which a transmission mechanism is removed;

fig. 5 is a schematic structural diagram of a guide assembly in a battery transport system according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a battery transportation system and a battery rack according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a power swapping station or an energy storage station according to an embodiment of the present invention.

Description of reference numerals:

battery transfer system 1

Battery pick and place mechanism 110

Side plate 111

Mounting member 112

Guide mechanism 120

Guide post 121

Guide assembly 122

Guide 1221

Projecting portion 12211

Guide shoe 1222

Guide groove 12221

Transmission mechanism 130

Synchronous belt 131

Driving wheel 132

Driven wheel 133

Drive mechanism 150

Drive motor 151

Coaxial connector 152

Top plate 160

Counterweight mechanism 170

Counterweight 171

Counterweight rope 172

Lifting pulley 1731

Counterweight sheave 1732

Transition pulley 1733

First transition pulley 17331

Second transition pulley 17332

Battery holder 2

Battery bay 210

Upright column 220

Switching or energy storage station 3

First casing 310

Second casing 320

Detailed Description

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

The embodiment of the invention provides a battery transfer system 1 with a synchronous belt, wherein the battery transfer system 1 can be used for transferring batteries of an electric automobile, and particularly, the battery transfer system 1 can be used for transferring the batteries among a plurality of battery positions 210 of a battery rack 2, which are arranged in the vertical direction. As shown in fig. 6, the battery compartments 210 are sequentially disposed on the battery rack 2 from bottom to top, each battery compartment 210 can be used for accommodating a battery for charging, and the battery transportation system 1 can move to one side of the opening of the battery compartment 210 to place the battery into the battery compartment 210, or take out the battery from the battery compartment 210, thereby transporting the battery among a plurality of battery compartments 210.

As shown in fig. 1 and fig. 2, the battery transportation system 1 includes a battery pick and place mechanism 110, a guide mechanism 120, and a transmission mechanism 130, where the battery pick and place mechanism 110 is used for picking up a discharge battery pack from the battery position 210; the guiding mechanism 120 includes a guiding assembly 122 and at least one guiding column 121, the guiding column 121 is disposed along a vertical direction, and the guiding assembly 122 is connected between the guiding column 121 and the battery pick and place mechanism 110.

As shown in fig. 1 and fig. 2, the transmission mechanism 130 includes a driving wheel 132, a driven wheel 133 and a synchronous belt 131, the driving wheel 132 and the driven wheel 133 are fixed on the guide post 121, the synchronous belt 131 is sleeved on the driving wheel 132 and the driven wheel 133, and two ends of the synchronous belt 131 are fixedly connected to the battery pick-and-place mechanism 110; the driving pulley 132 is driven to rotate to move the timing belt 131 in the vertical direction to drive the battery pick-and-place mechanism 110 to move up and down.

The battery picking and placing mechanism 110 can move up and down along the vertical direction under the action of the synchronous belt 131 by clamping the synchronous belt 131 in the vertical direction, and is simple in structure, high in transmission precision, stable in the whole lifting process and convenient to maintain.

In a specific implementation, as shown in fig. 2, the driving wheel 132 and the driven wheel 133 may be respectively disposed at the upper end and the lower end of the guiding column 121, the synchronous belt 131 may be sleeved on the two driving wheels 132 along the vertical direction, any one of the driving wheel 132 and the driven wheel 133 may be disposed above, and the other one may be disposed below along the vertical direction; accordingly, the driving motor 151 for driving the driving wheel 132 to rotate may be disposed above or below the guide post 121. In addition, a guide assembly 122 can be arranged between the battery picking and placing mechanism 110 and the guide column 121 to improve the smoothness of the guide. A counterweight mechanism may also be provided and coupled to the battery pick and place mechanism 110, by which the movement of the battery pick and place mechanism 110 can be balanced.

As a preferred embodiment, both ends of the timing belt 131 are connected to the sidewalls of the battery pick and place mechanism 110 at a predetermined interval in a vertical direction.

In a specific implementation, the timing belt 131 may be a long belt, and is wound around the driving pulley 132 and the driven pulley 133, and then connected to the battery pick-and-place mechanism 110 to form an annular structure. The two ends of the synchronous belt 131 can be connected with the battery pick-and-place mechanism 110 respectively, so that the connection between the battery pick-and-place mechanism 110 and the synchronous belt 131 is more stable, the synchronous belt 131 can form a structure similar to a closed structure, and power loss in the transmission process is avoided.

In a preferred embodiment, at least one end of the timing belt 131 is vertically movable with respect to the battery pick and place mechanism 110 to adjust the tension of the timing belt 131. Therefore, the distance between the synchronous belts 131 can be adjusted, and the end parts of the transmission pieces are prevented from being abraded due to frequent distance adjustment, so that the use durability is not influenced.

In a preferred embodiment, two ends of the timing belt 131 are respectively connected to upper and lower corner positions of the corresponding end of the battery pick-and-place mechanism 110.

In a preferred embodiment, the inner side surface of the timing belt 131 has a plurality of engaging teeth, and the engaging teeth of the timing belt 131 are engaged with the engaging teeth of the driving pulley 132 and the driven pulley 133. Thereby improving the precision of the transmission.

In a preferred embodiment, at least one transmission mechanism 130 is disposed on each side of the battery pick and place mechanism 110, the number of the guide posts 121 is at least two, the guide posts 121 are disposed at the middle positions of the two sides of the battery pick and place mechanism 110, or the guide posts 121 are disposed at the four end positions of the battery pick and place mechanism 110.

In a specific implementation, the number of the transmission mechanisms 130 may be two, two transmission mechanisms 130 are disposed on the middle positions of the two sides of the battery pick and place mechanism 110, and two guide posts 121 are correspondingly disposed on the middle positions of the two sides of the battery pick and place mechanism 110.

Alternatively, the number of the transmission mechanisms 130 may also be four, four transmission mechanisms 130 are respectively disposed at four ends of the battery pick and place mechanism 110, and four guide posts 121 are correspondingly disposed at four end positions of the battery pick and place mechanism 110.

The number of the transmission mechanisms 130 can be selected accordingly according to actual conditions, and in general, each transmission mechanism 130 is provided with a guide column 121 or a guide surface to guide the battery pick-and-place mechanism 110 to lift and improve the moving stability.

As a preferred embodiment, as shown in fig. 1, two ends of the chain 131 are connected to the upper and lower corners of the corresponding ends of the battery picking and placing mechanism 110, respectively. So that each end has a driving chain 131, which also makes the driving smooth.

In a preferred embodiment, as shown in fig. 3 and 4, the battery transportation system 111 further includes a top plate 160 and a counterweight mechanism 170, the top plate 160 being disposed on top of the guiding mechanism 120120; the counterweight mechanism 170 comprises a counterweight block 171, a counterweight cable 172 and a pulley block, wherein the pulley block comprises a lifting pulley 1731, a counterweight pulley 1732 and a transition pulley 1733, the lifting pulley 1731 is connected with the battery taking and placing mechanism 110, the counterweight pulley 1732 is connected with the counterweight block 171, the transition pulley 1733 is connected with the counterweight cable 172, and the transition pulley 1733 is used for changing the extending direction of the counterweight cable 172 so that the counterweight cable 172 passes through the lifting pulley 1731 and the counterweight pulley 1732; the two ends of the counterweight cable 172 are connected to the top plate 160, and the counterweight cable 172 passes around the lifting pulley 1731, the transition pulley 1733, and the counterweight pulley 1732 in sequence.

As shown in fig. 3 and 4, in an implementation, the lifting pulley 1731 is disposed at the bottom of the battery pick-and-place mechanism 110, and the outer walls of the two side plates 111 of the battery pick-and-place mechanism 110 are connected to the lifting pulley 1731; the weight cable 172 can be wound around the lower part of the battery pick-and-place mechanism 110, which not only can balance the lifting movement of the battery pick-and-place mechanism 110, but also can play a safety role. Counterweight pulley 1732 is attached to the top of counterweight 171; so that the weight cable 172 can be passed around the top of the weight block 171 to avoid interference with the weight block 171. In addition, the pulley block at least comprises two transition pulleys 1733 which are a first transition pulley 17331 and a second transition pulley 17332 respectively, the first transition pulley 17331 is arranged above the lifting pulley 1731, and the counterweight cable 172 passes through the lifting pulley 1731 and then extends upwards along the vertical direction to be connected with the first transition pulley 17331; a second transition sheave 17332 is disposed above the counterweight sheave 1732; and the counterweight cable 172 passes around the second transition pulley 17332 and then extends downward in the vertical direction to be connected to the counterweight pulley 1732. Therefore, the counterweight cable 172 sequentially passes through the lifting pulley 1731, the transition pulley 1733 and the counterweight pulley 1732, so that the counterweight block 171 is connected with the battery taking and placing mechanism 110, and the counterweight block 171 can balance the lifting movement of the battery taking and placing mechanism 110.

The second transition pulley 17332 is preferably located at the same horizontal position as the first transition pulley 17331, so as to avoid the space waste caused by the fall in the height direction. Additionally, a transition pulley 1733 may also be fixedly attached to the top plate 160 to effect a change in direction of the counterweight cable 172.

In a preferred embodiment, the battery transportation apparatus further includes a driving mechanism 150, and the driving mechanism 150 includes at least one driving motor 151, and the driving motor 151 is connected to the driving wheel 132 to drive the driving wheel 132 to rotate to drive the battery pick-and-place mechanism 110 to move up and down.

As a preferred embodiment, as shown in fig. 2, the number of the driving motors 151 is two, two driving motors 151 are disposed at one side of the battery pick-and-place mechanism 110, and the driving motors 151 are respectively connected to the driving wheels 132 disposed at two opposite sides of the battery pick-and-place mechanism 110, so that the two driving wheels 132 disposed at opposite sides rotate synchronously; the two sides of the battery pick-and-place mechanism 110 are two sides that are axial with respect to the extending and contracting direction of the battery pick-and-place mechanism 110. Therefore, the layout of the driving motor 151 is more reasonable, and the driving wheels 132 on the two sides of the battery pick-and-place mechanism 110 can synchronously rotate to drive the battery pick-and-place mechanism 110 to move stably.

As another preferred embodiment, the driving mechanism 150 includes two driving motors 151, two driving motors 151 are disposed on two sides of the battery pick-and-place mechanism 110 along the extending and retracting direction thereof, and an output shaft of each driving motor 151 is connected to the corresponding driving wheel 132 through a coaxial connector 152. Therefore, the two driving motors 151 are respectively arranged on two sides and symmetrically arranged, the structure is stable, and the stability of the system is enhanced.

As a preferred embodiment, the driving mechanism 150 is disposed at the upper end and/or the lower end of the guide column 121; alternatively, the driving mechanism 150 is disposed at the upper end and/or the lower end of the battery holder 2.

In practical implementation, the driving mechanism 150 may be disposed at an upper end or an upper end according to the position of the driving wheel 132, specifically, may be disposed at an upper end or a lower end of the guiding column 121, may be disposed at an upper end or a lower end of the battery rack 2, and may be disposed at other places, such as a dedicated ceiling. When the driving mechanism 150 is provided at the upper end and/or the lower end of the battery holder 2, the space is wide, and the installation is convenient.

As a preferred embodiment, as shown in fig. 2, the driving mechanism 150 further includes a coaxial connector 152, an output shaft of the driving motor 151 is connected to an input end of the coaxial connector 152, and the coaxial connector 152 is connected to the two driving wheels 132 corresponding thereto in a penetrating manner. Thereby realizing the synchronous rotation of the driving wheels 132 at both sides of the battery pick and place mechanism 110.

In a preferred embodiment, two columns 220 of the reusable battery rack 2 facing the battery pick-and-place mechanism 110 are disposed opposite to the guiding columns 121 disposed on both sides of the battery pick-and-place mechanism 110 in the extending and retracting direction.

As another preferred embodiment, as shown in fig. 6, the battery transportation system 11 is disposed between two rows of battery racks 2 spaced at a predetermined interval, and the battery pick and place mechanism 110 is disposed to be capable of moving toward the two rows of battery racks 2 for picking and placing the battery pack; the four guiding columns 121 respectively multiplex two rows of the four columns 220 of the battery racks 2 facing the battery pick and place mechanism 110.

In the above two embodiments, the guiding mechanism 120 can reuse the upright column 220 of the battery rack 2, and can reuse the upright column 220 of the battery rack 2 on one side, and can also reuse the upright columns 220 of the battery racks 2 on both sides, so that on one hand, the space waste can be reduced, the space is more compact, the floor area is reduced, and on the other hand, the battery transportation system 11 can be closer to the battery rack 2, the taking and placing distance is reduced, and the taking and placing efficiency is improved. Accordingly, the space between the battery rack 2 and the battery transfer apparatus is more compact, further reducing the floor space.

Preferably, the reusable pole 200 has a driving surface that cooperates with the driving mechanism 130, and/or the reusable pole 200 has a guiding surface that cooperates with the battery pick and place mechanism 110.

In particular embodiments, as shown in fig. 1 and 6, the shaft 200 has a plurality of side wall surfaces, one or more of which may serve as a driving surface or a guiding surface. The transmission surfaces refer to side wall surfaces for fixing the transmission mechanism 130, in the embodiment of the present invention, the transmission surfaces are a driving wheel and a driven wheel, and a synchronous belt sleeved on the driving wheel and the driven wheel, and the guide surfaces refer to side wall surfaces for guiding the battery pick-and-place mechanism 110 to ascend and descend. Therefore, the installation of the transmission mechanism 130 and the guidance of the battery taking and placing mechanism 110 can be realized, the overall structure is simplified, the connection between the transmission mechanism and the battery taking and placing mechanism is more compact, the guidance strength and the cost can be improved, manpower and material resources are saved in the installation process, and the operation efficiency of the whole system is improved.

As another preferred embodiment, the timing belt 131 may be a closed-loop structure, and the battery pick-and-place mechanism 110 is fixedly connected to the timing belt 131 through a fixing portion; the fixing part comprises a pressing block and a fixing block, and the synchronous belt 131 is arranged between the pressing block and the fixing block; one side surface of the fixing block is provided with a tooth groove.

In specific implementation, the synchronous belt 131 may be a strip structure, a closed-loop structure, or another type of structure, and the battery pick-and-place mechanism 110 may be connected to the synchronous belt 131 through a corresponding fixing mechanism.

In a preferred embodiment, the transmission mechanism 130 further includes a transition wheel connected to the timing belt 131 and disposed between the driving wheel 132 and the driven wheel 133 to change an extending direction of the timing belt 131 so that the timing belt 131 is attached to the surface of the guide post 121. Therefore, the surface of the synchronous belt 131 and the surface of the guide column 121 can be attached, and the tension degree can be improved to a certain degree, so that the transmission of the synchronous belt 131 is more stable.

As a preferred embodiment, as shown in fig. 1 and 5, the guide assembly 122 includes a guide rail 1221 and a guide shoe 1222, the guide rail 1221 being disposed on the pillar 121 and extending in a vertical direction; the guide shoe 1222 is disposed on the battery pick and place mechanism 110 and positioned on the guide rail 1221, and the guide shoe 1222 is movable along the extending direction of the guide rail 1221.

More specifically, as shown in fig. 5, the surface of the guide rail 1221 has a projecting portion 12211, the projecting portion 12211 extends in the direction in which the guide shoe 1222 is disposed, and the guide shoe 1222 is positioned on at least one side surface of the projecting portion 12211; the guide shoe 1222 has a guide groove 12221 extending in a vertical direction, the guide groove 12221 receiving the projection 12211, and an inner side surface of the guide groove 12221 being in sliding or rolling contact with at least one side surface of the projection 12211. The positioning effect can be improved by the protruding portion 12211 of the guide rail 1221; and at least one guiding flank can also be arranged by means of the projection 12211, which enhances the guiding capacity.

In addition, the counterweight mechanism 170 may also have a guide assembly 122 to guide the counterweight; the specific structure of the guide assembly 122 may adopt the guide rail guide shoe, the guide wheel assembly, or other structural forms. As shown in fig. 1 and 2, guide rails and guide shoes are provided on both sides of the counterweight mechanism for guiding.

As a preferred embodiment, the transmission mechanism 130 further includes limiting components, the limiting components are disposed at intervals along the extending direction of the guide post 121, each limiting component includes two limiting wheels, the two limiting wheels are disposed on two sides of the synchronous belt 131, and the peripheral surfaces of the limiting wheels abut against the edge of the synchronous belt 131. Spacing wheel is used for playing vertical spacing effect to hold-in range 131, prevents that hold-in range 131 from along transversely breaking away from guide post 121, guarantees drive mechanism 130 even running.

The embodiment of the invention also provides a battery replacing or energy storing station 3 for replacing batteries of an electric vehicle, wherein the battery replacing or energy storing station 3 comprises the battery transport system 1 with the synchronous belt.

As a preferred embodiment, the power exchanging station or the energy storage station 3 is formed by splicing at least two box bodies up and down, and a communication part communicated up and down is arranged between the at least two box bodies;

the battery replacement station or the energy storage station 3 further comprises battery racks 2, and the battery racks 2 are arranged in the communicating part in the vertical direction; the battery rack 2 includes a plurality of battery compartments 210 arranged in a vertical direction;

the guide mechanism 120 of the battery transfer system 1 is arranged in the communicating part; the battery pick and place mechanism 110 of the battery transportation system 1 moves up and down along the guide mechanism 120 to pick and place the batteries from the plurality of battery bays 210.

The power exchanging station or the energy storage station 3 can be a box-shaped device formed by vertically stacking a plurality of boxes, and the boxes are independent from each other. In the construction process, after the components in the box body are installed, the superposed box-shaped equipment is divided into an upper part and a lower part which are respectively transported, so that the road transportation requirement is met, and the on-site installation and debugging after transportation are facilitated. Moreover, the box bodies are stacked, the land area can be reduced, the land utilization rate is improved, and more battery packs can be contained in the same land area. The lower box body is communicated with the upper box body, so that the battery replacing equipment or the battery transferring equipment in the stacked box-shaped equipment moves along the height direction of the stacked box-shaped equipment without obstruction, the stacked box-shaped equipment extends in the height direction to enable the battery replacing station or the energy storage station to contain more battery packs and more types of battery packs, and the battery replacing efficiency and the operation capacity of the battery replacing station or the energy storage station can be improved.

As a preferred embodiment, as shown in fig. 7, the battery replacing station or the energy storage station 3 includes a first box 310 disposed below, two sides of the first box 310 are battery storage areas, and the middle of the first box 310 is a battery replacing area; the battery replacement station or the energy storage station 3 further includes a second box 320, and the second box 320 is at least disposed above the battery storage area of the first box 310 and is communicated with the battery storage area of the first box 310. Thereby can all carry out the battery from electric vehicle's both sides and get and dismantle, improve and trade electric efficiency to also can utilize the space of both sides, promote the utilization ratio. And, the second case 320 is disposed at least above the battery storage region of the first case 310, so that the battery compartment 210 can be expanded in the height direction and the case material can be saved.

As a preferred embodiment, at least one row of battery racks 2 is provided in the battery storage area; the battery taking and placing mechanism 110 is positioned at one side of the inlet and outlet of the battery bin 210 of the battery rack 2; the guide mechanism 120 is disposed in a vertical direction and corresponds to the battery compartment 210, so as to movably guide the vertical lifting of the battery pick and place mechanism 110 to pick and place the battery.

In a preferred embodiment, the guiding mechanism 120 includes at least two guiding pillars 121 disposed along the vertical direction, wherein the two guiding pillars 121 are disposed along the entrance/exit direction of the battery compartment 210 and at two ends of the battery pick and place mechanism 110; the two guide posts 121 multiplex the two columns 220 of the battery rack 2 near the battery pick and place mechanism 110.

As a preferred embodiment, as shown in fig. 6, the battery pick and place mechanism 110 is located between two rows of battery racks 2 oppositely disposed at a predetermined distance; the guide mechanism 120 includes four guide posts 121 along the vertical direction, the four guide posts 121 are disposed on four end positions of the battery pick and place mechanism 110 in a one-to-one correspondence, and the four guide posts 121 multiplex two columns of four columns 220 of the battery rack 2 close to the battery pick and place mechanism 110.

The guiding mechanism 120 multiplexes the upright posts 220 of the battery frames 2 at two sides, and the battery taking and placing mechanism 110 can take and place the batteries of the battery frames 2 at two sides, so that the taking and placing efficiency can be improved, and the resources of the battery taking and placing mechanism 110 can be saved. And, accordingly, the space between the battery rack 2 and the battery pick and place mechanism 110 is more compact, further reducing the floor space.

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 that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A battery transfer system with synchronous belts for transferring batteries between battery bays arranged in a vertical direction of a battery rack,

2. The battery transportation system having the timing belt according to claim 1, wherein both ends of the timing belt are attached to the sidewalls of the battery pick and place mechanism at a predetermined interval in a vertical direction.

3. The battery transportation system having a timing belt according to claim 2, wherein at least one end of the timing belt is vertically movable with respect to the battery pick and place mechanism to adjust a tension of the timing belt.

4. The battery transportation system with the synchronous belt according to claim 2, wherein both ends of the synchronous belt are connected to the upper and lower end corners of the corresponding ends of the battery pick-and-place mechanism, respectively.

5. The battery transport system with the synchronous belt according to claim 1, wherein the inner side of the synchronous belt has a plurality of engaging teeth, and the engaging teeth of the synchronous belt are engaged with the engaging teeth of the driving pulley and the driven pulley.

6. The battery transportation system with the synchronous belt according to claim 1, wherein at least one of the transmission mechanisms is disposed on each of two sides of the battery pick-and-place mechanism; the number of the guide posts is at least two, the guide posts are arranged at the middle positions of the two sides of the battery taking and placing mechanism, or the guide posts are arranged at the four end positions of the battery taking and placing mechanism.

7. The battery transportation system with the synchronous belt according to claim 6, wherein the number of the transmission mechanisms is two, two transmission mechanisms are disposed at the middle positions of two sides of the battery pick and place mechanism, and two guide posts are correspondingly disposed at the middle positions of two sides of the battery pick and place mechanism;

or the number of the transmission mechanisms is four, the four transmission mechanisms are respectively arranged at the four end parts of the battery taking and placing mechanism, and the four guide columns are correspondingly positioned at the four end parts of the battery taking and placing mechanism.

8. The battery transport system with synchronous belt of claim 1, further comprising a counterweight mechanism comprising a counterweight block and a counterweight cable; the counterweight cable is used for connecting the counterweight block and the battery taking and placing mechanism so as to enable the counterweight block to balance the battery taking and placing mechanism to move up and down.

9. The battery transport system with synchronous belt of claim 8, further comprising a top plate disposed on top of the guide mechanism; the counterweight mechanism further comprises a pulley block, the pulley block comprises a lifting pulley, a counterweight pulley and a transition pulley, the lifting pulley is connected with the battery taking and placing mechanism, the counterweight pulley is connected with the counterweight block, the transition pulley is connected with the counterweight cable, and the transition pulley is used for changing the extension direction of the counterweight cable so that the counterweight cable can pass around the lifting pulley and the counterweight pulley; the both ends of counter weight cable respectively with the roof is connected, just the counter weight cable is walked around in proper order the lift pulley the transition pulley with the counter weight pulley.

10. The battery transportation system with the synchronous belt according to claim 1, wherein the battery transportation device further comprises a driving mechanism, the driving mechanism comprises at least one driving motor, and the driving motor is connected to the driving wheel to drive the driving wheel to rotate to drive the battery pick-and-place mechanism to move up and down.

11. The battery transportation system with the synchronous belt according to claim 10, wherein the number of the driving motors is two, two driving motors are disposed at one side of the battery pick and place mechanism, and the driving motors are respectively connected to the driving wheels disposed opposite to both sides of the battery pick and place mechanism, so that the two driving wheels disposed opposite to each other rotate synchronously; the two sides of the battery taking and placing mechanism are two sides taking the telescopic direction of the battery taking and placing mechanism as an axis.

12. The battery transportation system with the synchronous belt according to claim 10, wherein the driving mechanism comprises two driving motors, the two driving motors are disposed at two sides of the battery pick-and-place mechanism along the extension and retraction direction thereof, and an output shaft of each driving motor is connected with the corresponding driving wheel through a coaxial connector.

13. The battery transport system with synchronous belt of claim 11, wherein the driving mechanism further comprises a coaxial connector, the output shaft of the driving motor is connected with the input end of the coaxial connector, and the coaxial connector is connected with the two corresponding driving wheels in a penetrating way.

14. The battery transport system with synchronous belt of claim 10, wherein the driving mechanism is provided at the upper end and/or the lower end of the guide post;

or the driving mechanism is arranged at the upper end and/or the lower end of the battery rack.

15. The battery transportation system with the synchronous belt according to claim 1, wherein the guide posts disposed at both sides of the battery pick and place mechanism in the expansion and contraction direction multiplex two columns of the battery rack facing the battery pick and place mechanism.

16. The battery transportation system with the synchronous belt according to claim 1, wherein the battery transportation system is disposed between two rows of the battery racks disposed at a predetermined interval, and the battery pick and place mechanism is disposed to be telescopically movable toward the two rows of the battery racks to pick and place the battery pack;

the four guide columns respectively multiplex two columns of the four stand columns of the battery rack facing the battery taking and placing mechanism.

17. The battery transport system with synchronous belt of claim 15 or 16, wherein the multiplexed columns have driving surfaces cooperating with the driving mechanism and/or the multiplexed columns have guiding surfaces cooperating with the battery pick and place mechanism.

18. The battery transportation system with the synchronous belt according to claim 1, wherein the synchronous belt is a closed loop structure, and the battery pick-and-place mechanism is fixedly connected with the synchronous belt through a fixing part;

19. The battery transport system with the timing belt as claimed in claim 18, wherein the transmission mechanism further comprises a transition wheel connected to the timing belt and disposed between the driving wheel and the driven wheel to change the extending direction of the timing belt to attach the timing belt to the surface of the guide post.

20. The battery transport system with synchronous belt according to claim 1, wherein the guide mechanism further comprises a guide rail and a guide shoe, the guide rail is disposed on the guide post and extends in a vertical direction; the guide shoe is arranged on the battery taking and placing mechanism and positioned on the guide rail, and the guide shoe can move along the extending direction of the guide rail.

21. The battery transportation system with the synchronous belt according to claim 1, wherein the transmission mechanism further comprises two limiting assemblies, the limiting assemblies are arranged at intervals along the extending direction of the guide post, each limiting assembly comprises two limiting wheels, the two limiting wheels are respectively arranged at two sides of the synchronous belt, and the peripheral surfaces of the limiting wheels abut against the edge of the synchronous belt.

22. A battery exchange or storage station for exchanging batteries for electric vehicles, comprising a battery transport system with a synchronous belt as claimed in any one of claims 1 to 21.

23. The power swapping station or the energy storage station as claimed in claim 22, wherein the power swapping station or the energy storage station is formed by splicing at least two boxes up and down, and a communication part which is communicated with each other up and down is arranged between the at least two boxes;

the battery replacing station or the energy storage station further comprises battery racks, and the battery racks are arranged in the communicating part along the vertical direction; the battery rack comprises a plurality of battery bins which are sequentially arranged along the vertical direction;

the guiding mechanism of the battery transfer system is arranged in the communicating part; and a battery taking and placing mechanism of the battery transfer system moves up and down along the guide mechanism so as to take and place batteries from a plurality of battery positions.

24. The power swapping station or the energy storage station as claimed in claim 23, wherein the power swapping station or the energy storage station comprises a first box body arranged below, two sides of the first box body are battery storage areas, and the middle of the first box body is a power swapping area;

25. A power station according to claim 24 wherein at least one battery rack is provided in the same battery storage area;

26. The swapping or stocking station of claim 25, wherein the battery pick-and-place mechanism is located between two rows of battery racks oppositely disposed at a predetermined distance;

the guide mechanism comprises four guide columns in the vertical direction, the four guide columns are arranged at the four end positions of the battery taking and placing mechanism in a one-to-one correspondence mode, and the four guide columns are used for multiplexing the four stand columns of the two rows of battery racks close to the battery taking and placing mechanism.