CN116252672A - Battery replacement equipment and battery replacement station - Google Patents

Abstract

The invention provides a power conversion device and a power conversion station, wherein the power conversion device comprises at least four traveling assemblies for driving the power conversion device to move along a preset traveling direction, the traveling assemblies are respectively positioned at the front end and the rear end of the traveling direction, and at least one of the traveling assemblies is connected with a driving device. According to the power conversion equipment and the power conversion station, at least four traveling components are arranged on the power conversion equipment, so that loads of the power conversion equipment and a battery pack are effectively dispersed, namely, the power conversion equipment is supported by multiple points, the whole power conversion equipment is stable, the balance is good, and the reliability is high in the traveling process; secondly, at least one walking component is independently provided with a driving device, namely the driving device and the walking component are in one-to-one correspondence, the driving device can directly drive the walking component without adding other mechanisms in the middle, so that the walking part is simple in structure and small in occupied space, and the power conversion equipment can be more compact.

Description

Battery replacement equipment and battery replacement station

Technical Field

The invention relates to the field of power exchange stations, in particular to power exchange equipment and a power exchange station.

Background

In the prior art, in order to improve the safety of power exchange of commercial vehicles, some commercial vehicles, such as heavy trucks, begin to adopt chassis type power exchange modes. The chassis type power exchanging mode is that the battery pack of the electric automobile is replaced from the bottom of the automobile, so that compared with the mode that the battery pack is lifted from the top to be replaced, the lifting safety risk is avoided, and the safety is greatly improved. When the chassis type power exchange station is used for power exchange operation, an electric automobile is required to drive into the power exchange station and park at a fixed position, then the power exchange equipment drives to the fixed position at the bottom of the automobile to align with the electric automobile, after the power exchange equipment aligns with the electric automobile, the power exchange equipment can detach or install a battery pack to finish the power exchange operation, the detached old battery pack is carried back to a battery compartment of the power exchange station, then a new battery pack is acquired from the battery compartment and moves to the fixed position at the bottom of the automobile again, and the new battery pack is installed on the electric automobile.

Therefore, the battery-changing device needs a traveling mechanism which can drive the battery-changing device to travel and ensure that the battery-changing device can travel efficiently under the condition of carrying a battery. The existing travelling mechanism adopts a driving motor to simultaneously connect at least two travelling assemblies in a transmission mode so as to meet the requirements of the battery-changing equipment, so that the travelling mechanism of the battery-changing equipment is complex in structure and large in occupied space, and the whole structure of the battery-changing equipment is complex and relatively large in volume.

Disclosure of Invention

The invention aims to overcome the defects of complex structure and large occupied space of a walking part of power conversion equipment in the prior art, and provides the power conversion equipment and a power conversion station.

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

the power conversion equipment comprises at least four traveling assemblies, wherein the traveling assemblies are used for driving the power conversion equipment to move along a preset traveling direction and are respectively positioned at the front end and the rear end of the traveling direction, and at least one of the traveling assemblies is independently connected with a driving device.

In the scheme, at least four traveling components are arranged on the power conversion equipment, and load of the power conversion equipment and the battery pack is effectively dispersed, namely the power conversion equipment is supported by multiple points, so that the whole power conversion equipment is stable, the balance is good, and the reliability is high in the traveling process; secondly, at least one walking component is independently provided with a driving device, namely the driving device and the walking component are in one-to-one correspondence, the driving device can directly drive the walking component without adding other mechanisms in the middle, so that the walking part is simple in structure and small in occupied space, and the power conversion equipment can be more compact.

Preferably, at least one of the traveling components located at the left side and the right side of the power conversion device is independently connected with the driving device along the traveling direction, and the traveling components independently connected with the driving device are located at the same end of the power conversion device in the front-rear direction.

In this scheme, adopt above-mentioned structure, the running gear of left and right sides all is equipped with independent drive arrangement, and the drive arrangement of both sides drives simultaneously can promote running ability and the efficiency of running gear, or only one side's drive arrangement drive running gear, and the drive arrangement of opposite side is as reserve support, can drive running gear when the drive arrangement of one side goes wrong, avoids changing the problem that power equipment appears unable walking. Under other conditions, for example, when the power conversion equipment is arranged to be capable of rotating in a small range in a plane, the driving devices at two sides can be independently reversely driven to enable the power conversion equipment to twist relative to the traveling assembly in the plane where the power conversion equipment is located, so that the rotary motion of the power conversion equipment is realized, and the angle of the power conversion equipment relative to the electric automobile is adjusted.

Preferably, the power conversion equipment comprises a main frame and four traveling components, the traveling components are arranged at two sides of the main frame at intervals along the traveling direction of the power conversion equipment, and the traveling components arranged at two intervals are respectively arranged at the front end and the rear end of the main frame along the traveling direction.

In this scheme, adopt above-mentioned structure, four running gear set up respectively at the front and back both ends of main frame both sides, that is each running gear dispersed arrangement promptly to can balanced support main frame, the supporting effect to main frame is best, guarantees that the equipment of changing electricity can steadily remove.

Preferably, along the traveling direction, at least one traveling wheel of the traveling assembly positioned at two sides of the power conversion equipment is set as a sheave, and the sheave can be clamped with a preset guide rail so that the power conversion equipment travels along the guide rail.

In this scheme, adopt above-mentioned structure, through at least one sheave and guide rail cooperation, can restrict the battery replacement equipment and walk on the guide rail, be convenient for through the guide rail to battery replacement equipment direction, the direction is effectual, need not complicated control just can make battery replacement equipment remove to electric automobile below along established route, simultaneously, can improve battery replacement equipment's walking efficiency to improve battery replacement efficiency.

Preferably, the power conversion equipment further comprises a mounting frame, wherein the mounting frame is connected with the walking assembly and is arranged on the guide rail in a crossing manner and can move relative to the guide rail so that the power conversion equipment can walk along the guide rail all the time.

In this scheme, adopt above-mentioned structure, utilize the mounting bracket to make the equipment of changing electricity can walk along the guide rail, prevent to change the equipment of changing electricity and control the skew, guarantee that the equipment of changing electricity can move along the extending direction of guide rail.

Preferably, the mounting frame comprises a plurality of limiting parts arranged on two sides of the guide rail along the extending direction of the guide rail and a mounting part connected with the walking assembly, the mounting part is arranged on the guide rail in a straddling manner along the width direction of the guide rail and is connected with the plurality of limiting parts on two sides of the guide rail, and the limiting parts are rotatably arranged to enable the battery replacement equipment to roll along the side wall of the guide rail, which can be attached to the guide rail in the walking process of the guide rail.

In this scheme, adopt above-mentioned structure, the mounting bracket passes through the installation department setting on walking subassembly and is connected the spacing portion of guide rail both sides and forms a whole, realizes the synergism of a plurality of spacing portions of guide rail both sides, establishes on the guide rail both sides through spacing portion card to spacing portion can laminate the guide rail lateral wall roll and reduce frictional force, compares the spacing mode of sheave, and this kind of structure can avoid the card in moving to die and reduce wearing and tearing.

Preferably, the mounting portion comprises a mounting plate located above the rail and extension plates extending downwards from two sides of the mounting plate to two sides of the guide rail, the extension plates are used for being connected with the limiting portion, and the mounting plate is provided with a wheel accommodating area for accommodating travelling wheels of the travelling assembly.

In this scheme, adopt above-mentioned structure, the mounting panel is used for connecting the extension board, and the extension board is used for installing spacing portion for whole installation department can nest in the guide rail top and its spacing portion can laminate the guide rail lateral wall and roll. And the mounting panel has set up the wheel and has held the district for the arrangement structure of mounting bracket and walking wheel is compact, and the walking wheel of being convenient for is in holding the district with the guide rail laminating and being restricted to walk on the guide rail, makes running gear be unique for the direction of travel on ground, and the battery charging outfit can not yaw. In addition, because the walking wheel is located the accommodation area, the mounting panel all around of accommodation area can also play certain guard action to the walking wheel.

Preferably, one of the walking components is a first walking component rotationally connected with the main frame, the other three walking components are second walking components slidingly connected with the main frame along the direction perpendicular to the walking direction, and the two second walking components which are positioned at the front end or the rear end of the main frame along the walking direction are respectively and independently provided with the driving device.

In the scheme, the structure is adopted, so that the main frame can rotate relative to the walking assembly, and the posture of the power conversion equipment can be adjusted. When the parking of the electric automobile has certain deviation, the second walking assembly can be driven to move, so that the main frame and the second walking assembly can slide relatively to twist and rotate by taking the second walking assembly as a fulcrum, the posture adjustment of the battery replacement equipment is completed, and the battery pack of the battery replacement equipment and the battery pack of the electric automobile can be accurately aligned.

Preferably, the first walking assembly comprises a first walking wheel, a first wheel frame and a first rotating connecting piece, wherein the rotating shaft of the first walking wheel is arranged in the first wheel frame, and the first wheel frame is connected with the main frame through the first rotating connecting piece so that the first walking assembly can rotate relative to the main frame; and/or the second walking assembly comprises a second walking wheel, a second wheel frame and a sliding connecting piece, wherein a rotating shaft of the second walking wheel is arranged in the second wheel frame, and the second wheel frame is connected with the main frame through the sliding connecting piece so that the second walking assembly can slide relative to the main frame.

In the scheme, the first wheel frame is arranged to facilitate the installation of the first travelling wheel and the installation of the first rotating connecting piece, so that the whole structure is simple and the installation is convenient; the second wheel carrier is convenient for installing the second travelling wheel, and meanwhile, the sliding connecting piece is convenient to install, so that the whole structure is simple, and the installation is convenient.

Preferably, the second walking assembly further comprises a connecting frame sleeved outside the wheel frame, the wheel frame is connected with the connecting frame through the sliding connecting piece, and the connecting frame is connected with the main frame through the second rotating connecting piece so that the second walking assembly can slide and rotate relative to the main frame.

In the scheme, the structure is adopted, the connecting frame is further arranged outside the second wheel frame and used for enabling the second wheel frame to slide in the connecting frame, and meanwhile the connecting frame is connected with the main frame through the second rotating connecting piece so as to enable the main frame to slide and rotate relative to the second walking assembly. The arrangement of the connecting frame makes the installation of the rotating and sliding related parts simpler, and simultaneously the sliding and the rotating can respectively and independently move without interference.

Preferably, the sliding connection piece is provided with a first stop piece, and the first stop piece is provided with a locking position and an unlocking position, and is used for locking or unlocking the relative sliding state between the second walking components of the main frame respectively.

In this scheme, adopt above-mentioned structure, through first retaining piece, can lock the slip connecting piece of second walking subassembly when trading the electric equipment and remove, make it unable slip for it is more steady when removing to trade the electric equipment, can not rock because of the slip of second walking subassembly. When the power conversion equipment needs to be adjusted in posture and alignment of the electric vehicle, the second walking assembly is unlocked to enable the second walking assembly to slide relatively, so that the power conversion equipment can be twisted relatively to be aligned with the electric vehicle, and the battery can be conveniently disassembled and assembled.

Preferably, the battery replacing device is provided with a second stop component, and the second stop component is arranged between the main frame and the connecting frame and is provided with a locking state and an unlocking state, and is respectively used for locking or unlocking the relative rotation state between the main frame and the second traveling component; and/or

The second stop component is arranged between the main frame and the first wheel frame and is provided with a locking state and an unlocking state, and the second stop component is respectively used for locking or unlocking the relative rotation state between the main frame and the first travelling component.

The power conversion equipment can lock the first walking component and the second walking component to rotate relative to the main frame when the power conversion equipment moves through the second stop component, so that the power conversion equipment is more stable when moving, and the power conversion equipment cannot shake due to the first rotating connecting piece and the second rotating connecting piece. When the power conversion equipment needs to be adjusted in posture and alignment of the electric vehicle, the first rotating connecting piece and the second rotating connecting piece are unlocked, so that the power conversion equipment can rotate relatively, and the battery can be conveniently dismounted when the power conversion equipment is aligned with the electric vehicle.

A power exchange station comprising a power exchange apparatus as described above.

In the scheme, at least four traveling components are arranged on the power conversion equipment, and load of the power conversion equipment and the battery pack is effectively dispersed, namely the power conversion equipment is supported by multiple points, so that the whole power conversion equipment is stable, the balance is good, and the reliability is high in the traveling process; secondly, at least one walking component is independently provided with a driving device, namely the driving device and the walking component are in one-to-one correspondence, the driving device can directly drive the walking component without additionally arranging other mechanisms in the middle, so that the walking part is simple in structure and small in occupied space, the power exchange equipment can be more compact, the space of the power exchange station is larger, and the setting requirement is lower.

The invention has the positive progress effects that: at least four traveling components are arranged on the power conversion equipment, and load of the power conversion equipment and the battery pack is effectively and dispersedly borne, namely the power conversion equipment is supported by multiple points, so that the whole power conversion equipment is stable, the balance is good, and the reliability is high in the traveling process; secondly, at least one walking component is independently provided with a driving device, namely the driving device and the walking component are in one-to-one correspondence, the driving device can directly drive the walking component without adding other mechanisms in the middle, so that the walking part is simple in structure and small in occupied space, and the power conversion equipment can be more compact.

Drawings

Fig. 1 is a schematic structural diagram of a power conversion device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a partial structure of a power conversion device according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a partial structure of a power conversion device according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a second walking assembly according to an embodiment of the invention.

Fig. 5 is a schematic structural view of another second walking assembly according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a first walking assembly according to an embodiment of the present invention.

Fig. 7 is a schematic structural view of a second wheel frame according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a sliding rail according to an embodiment of the invention.

Fig. 9 is a schematic structural diagram of a slider according to an embodiment of the present invention.

Fig. 10 is a schematic structural view of a second rotary connector according to an embodiment of the present invention.

Fig. 11 is a schematic structural view of a fixing portion according to an embodiment of the present invention.

Fig. 12 is a schematic structural view of a mounting frame according to an embodiment of the present invention.

Fig. 13 is a schematic structural diagram of a power conversion device according to an embodiment of the present invention.

Fig. 14 is a schematic view of a mounting structure of a second walking assembly according to an embodiment of the present invention.

Fig. 15 is a schematic view of a mounting structure of a first traveling assembly according to an embodiment of the present invention.

Fig. 16 is a schematic view of a mounting structure of a second walking assembly according to an embodiment of the present invention.

Fig. 17 is a schematic structural view of a second stop assembly according to an embodiment of the present invention.

Reference numerals illustrate:

main frame 200

Mounting groove 210

Gap 211

First traveling assembly 20

First travelling wheel 21

First wheel frame 22

First rotary connection 221

Second traveling assembly 10

Second travelling wheel 11

Second wheel carrier 12

Drive device 13

Sliding connector 122

Connecting frame 1221

Slide rail 1222

Slider 1223

Second rotating connection 123

Fixing part 1231

Rotating part 1232

Guide rail 300

Mounting rack 310

Mounting portion 311

Mounting plate 3111

Extension plate 3112

Limit part 312

Second stop assembly 30

Wedge block 31

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which various embodiments are shown.

As shown in fig. 1 to 3, the present embodiment provides a power conversion device, which includes at least four traveling assemblies for driving the power conversion device to move along a preset traveling direction, the traveling assemblies are respectively located at front and rear ends of the traveling direction, wherein at least one of the traveling assemblies is connected with a driving device 13.

At least four traveling components are arranged on the battery exchange equipment, and load of the battery exchange equipment and the battery pack is effectively dispersed, namely the battery exchange equipment is supported by multiple points, so that the whole battery exchange equipment is stable, the balance is good, and the reliability is high in the traveling process; secondly, at least one walking component is independently provided with a driving device, namely the driving device and the walking component are in one-to-one correspondence, the driving device can directly drive the walking component without adding other mechanisms in the middle, so that the walking part is simple in structure and small in occupied space, and the power conversion equipment can be more compact.

The walking components are arranged on two sides of the power conversion equipment and are uniformly distributed, each walking component is provided with walking wheels, and the effects of supporting the power conversion equipment and realizing the movement of the power conversion equipment are achieved.

In the embodiment, four walking components are respectively arranged at the front end and the rear end of the left side and the right side of the power exchange device, and the power exchange device is supported from accessories at four end corners of the power exchange device.

In other embodiments, the number of the walking components can be more, and the setting positions can be set at the front end, the rear end and the bottom surface of the power conversion device, so long as the movement and the stability of the power conversion device can be realized.

As shown in fig. 2 and 3, at least one of the traveling components located on the left and right sides of the battery-changing device is connected with a driving device 13, and the traveling components connected with the driving device 13 are located at the same end of the battery-changing device in the front-rear direction.

The walking components of the scheme can be independently driven by one driving device 13, wherein only one walking component can comprise the driving device 13, and each walking component can also comprise one driving device 13. The driving device 13 is arranged on the travelling mechanism at the front end or the rear end of the power conversion equipment, and meanwhile, the travelling mechanism is driven by the front wheel and/or the rear wheel of the power conversion equipment, so that smoother movement can be brought. In this embodiment, two traveling assemblies at the rear end of the power conversion device are provided with a driving device 13. The power conversion equipment is driven to move by two walking components at the rear end.

In other embodiments, the four traveling assemblies are respectively provided with a driving device 13 correspondingly, so that the full driving of the power conversion equipment is realized, stronger traveling power is obtained, the load and the moving speed of the power conversion equipment are higher, and the traveling stability is improved.

In other embodiments, the driving device 13 may be disposed on only one traveling component, and the traveling component drives other traveling components of the power conversion device to move so as to drive the power conversion device.

In this embodiment, the walking components on the left and right sides are all provided with independent driving devices 13, the driving devices 13 on the two sides can drive the walking components simultaneously to improve the walking capability and efficiency of the walking components, or only the driving device 13 on one side drives the walking components, and the driving device 13 on the other side is used as a standby support, so that the walking components can be driven when the driving device 13 on one side has a problem, and the problem that the power conversion equipment cannot walk is avoided.

In other cases, for example, when the power conversion device is set to be capable of rotating in a small range in a plane, the driving devices 13 on two sides can be independently reversely driven to enable the power conversion device to twist relative to the traveling assembly in the plane where the power conversion device is located, so that the rotary motion of the power conversion device is realized, and the angle of the power conversion device relative to the electric automobile is adjusted. As shown in fig. 1 to 3, the power conversion apparatus includes a main frame 200 and four traveling assemblies, two traveling assemblies disposed at intervals are respectively disposed at both sides of the main frame 200 along a traveling direction of the power conversion apparatus, and the two traveling assemblies disposed at intervals are respectively disposed at front and rear ends of the main frame 200 along the traveling direction.

In this embodiment, four traveling assemblies are respectively disposed at the front and rear ends of two sides of the main frame 200, that is, the traveling assemblies are distributed, so that the main frame can be supported in a balanced manner, the supporting effect on the main frame 200 is best, and the power conversion equipment can be ensured to move stably.

Specifically, the walking components of the present embodiment are disposed in the mounting grooves 210 of the main frame 200, and the front and rear ends of the main frame 200 of the battery exchange device in the moving direction thereof are respectively provided with the mounting grooves 210 having a transverse penetration, and the walking components are disposed at both ends of the mounting grooves 210.

In other embodiments, in the traveling direction, at least one traveling wheel of each traveling assembly located at two sides of the power conversion device is configured as a sheave (not shown in the drawing), and the sheave may be engaged with the preset guide rail 300 to enable the power conversion device to travel along the guide rail 300.

Through at least one sheave and guide rail 300 cooperation, can be fixed in on the guide rail 300 with trading electric equipment, be convenient for through guide rail 300 to trading electric equipment direction, the direction is effectual, need not complicated control just can make trading electric equipment remove to electric automobile below along established route, simultaneously, can improve trading electric equipment's walking efficiency to improve and trade electric efficiency.

As shown in fig. 2, 3 and 12, the battery-charging device further includes a mounting rack 310, where the mounting rack 310 is connected to the traveling assembly and is disposed across the guide rail 300 and can move relative to the guide rail 300, so that the battery-charging device always travels along the guide rail 300.

Specifically, the battery replacing device is matched with the guide rail 300 by arranging a plurality of mounting frames 310 matched with the guide rail 300, the mounting frames 310 are arranged on the guide rail and are connected with travelling wheels, and each travelling wheel corresponds to one mounting frame 310, so that travelling is ensured to be limited on the guide rail 300.

In this embodiment, the mounting rack 310 is utilized to enable the battery exchange device to walk along the guide rail 300, so as to prevent the battery exchange device from shifting left and right, and ensure that the battery exchange device can move along the extending direction of the guide rail 300.

In other embodiments, no mounting frame is provided, and guidance or other manners are used to control the battery exchange device to travel along the guide rail 300. Or other common structures are used for fixing the travelling wheels of the power conversion equipment on the guide rail.

As shown in fig. 12, the mounting bracket 310 includes a plurality of limiting portions 312 disposed on both sides of the guide rail 300 along the extending direction of the guide rail 300 and a mounting portion 311 connected to the traveling assembly, wherein the mounting portion 311 is disposed across the guide rail 300 along the width direction of the guide rail 300 and is connected to the plurality of limiting portions 312 on both sides of the guide rail 300, and the limiting portions 312 are rotatably disposed so as to be capable of rolling against the side walls of the guide rail 300 during the traveling of the battery-changing device along the guide rail 300.

Specifically, the limiting portion 312 of the mounting frame 310 is a roller and can roll along the extending direction of the guide rail 300 while being attached to both sides of the guide rail 300. The mounting portion 311 is integrally formed as a clamping structure, and is clamped at both sides of the guide rail 300 by the limiting portions 312.

In this embodiment, the mounting frame 310 is disposed on the walking assembly through the mounting portion 311 and connects the limiting portions 312 on two sides of the guide rail 300 to form a whole, so as to realize the synergistic effect of the plurality of limiting portions 312 on two sides of the guide rail 300, and the limiting portions 312 are clamped on two sides of the guide rail 300, so that the limiting portions 312 can be attached to the side walls of the guide rail 300 to roll to reduce friction, and compared with the sheave limiting mode, the structure can avoid blocking and reduce abrasion during movement.

In other embodiments, the limiting portion 312 may also be a slider structure made of a low friction material.

As shown in fig. 12, the mounting portion 311 includes a mounting plate 3111 located above the rail and extension plates 3112 extending downward from both sides of the mounting plate 3111 to both sides of the guide rail 300, the extension plates 3112 being for connection with the limiting portion 312, the mounting plate 3111 having a wheel receiving area for receiving the road wheels of the traveling assembly.

Specifically, the mounting portion 311 forms a clamping structure through the mounting plate 3111 and the extension plate 3112, the mounting plate 3111 is located at the top end of the guide rail 300, and has an L-shaped structure, one surface of the mounting plate 3111 is connected to the traveling assembly, the other surface of the mounting plate is connected to the extension plate 3112, and the mounting plate 3111 has a hollow structure, so that the traveling wheels (the second traveling wheel 11 in the drawing may be disposed on other traveling wheels) may contact with the upper surface of the guide rail 300 through the hollow structure. The extension plates 3112 on both sides extend downward to the side surfaces of the guide rail 300, and the stopper 312 is mounted on the end of the extension plate 3112 in the vertical direction and rotatable in the horizontal direction with its rolling surface in contact with the side surfaces of the guide rail 300.

In other embodiments, the mounting plate 3111 may have a structure with a groove formed at one side, through which the wheel is assembled with the mounting plate 3111, and extends from the groove to below the mounting plate 3111 to contact the rail 300.

The mounting plate 3111 is used to connect the extension plate 3112, and the extension plate 3112 is used to mount the limit portion 312 so that the entire mounting portion 311 can be nested over the rail 300 and its limit portion 312 can roll against the side wall of the rail 300. And mounting panel 3111 has set up the wheel and has held the district for the arrangement structure of mounting bracket 310 and walking wheel is compact, and the walking wheel of being convenient for is in holding the district and laminating with guide rail 300 and is restricted to walking on guide rail 300, makes running gear be unique for the direction of travel on ground, and the battery charging outfit can not yaw. In addition, because the walking wheel is located the accommodation area, the mounting panel all around of accommodation area can also play certain guard action to the walking wheel.

As shown in fig. 1 to 3, one of the traveling assemblies is a first traveling assembly 20 rotatably connected to the main frame 200, the other three are second traveling assemblies 10 slidably connected to the main frame 200 in a direction perpendicular to the traveling direction, and the two second traveling assemblies 10, which are located at the front end or the rear end of the main frame 200 in the traveling direction, are each independently provided with a driving device 13.

Specifically, the first traveling assembly 20 is rotatably connected to the main frame 200, and the second traveling assembly 10 is slidably connected to the main frame 200, so that the battery replacement device can adjust the posture of the main frame 200 relative to the traveling direction to align with the battery of the battery replacement vehicle while maintaining the traveling direction of the main frame 200. The battery replacement device is provided with three second walking components 10 and one first walking component 20, the first walking components 20 and one second walking component 10 are arranged at the front end of the battery replacement device at intervals side by side along the walking direction of the battery replacement device, the other two second walking components 10 are arranged at the rear end of the battery replacement device at intervals side by side, and when the battery replacement device moves to a battery replacement position below a vehicle needing battery replacement, the battery replacement device and a battery of the battery replacement vehicle are possibly not aligned, and at the moment, the alignment can be carried out by adjusting the posture of the battery replacement device. In the posture adjustment, the first traveling assembly 20 is rotatably connected to the main frame 200, so that the main frame 200 can swing with the first traveling assembly 20 as a center of a circle under the sliding action of the second traveling assembly 10 driven to slide, thereby achieving the posture adjustment.

So that the main frame 200 can rotate relative to the walking assembly, and the posture of the battery exchange device can be adjusted. When a certain deviation exists in the parking of the electric automobile, the second walking assembly 10 can be driven to move, so that the main frame 200 and the second walking assembly 10 can slide relatively to twist and rotate by taking the second walking assembly 10 as a fulcrum, the posture of the power exchange equipment is adjusted, and the power exchange equipment and a battery pack of the electric automobile can be accurately aligned.

As shown in fig. 6, the first traveling assembly 20 includes a first traveling wheel 21, a first wheel frame 22, and a first rotation link 221, the rotation shaft of the first traveling wheel 21 is disposed in the first wheel frame 22, and the first wheel frame 22 is connected to the main frame 200 through the first rotation link 221 such that the first traveling assembly 20 can rotate relative to the main frame 200.

Specifically, the first rotating link 221 is installed at both upper and lower sides of the first wheel frame 22, and includes a fixed portion 1231 and a rotating portion 1232, the fixed portion 1231 and the rotating portion 1232 being disposed to be rotatably coupled to each other while being capable of receiving radial force and axial force, one of the fixed portion 1231 and the rotating portion 1232 being coupled to the main frame 200, and the other being coupled to both upper and lower sides of the first wheel frame 22.

Meanwhile, the first traveling assembly 20 and the main frame 200 of the present embodiment have a gap during assembly, specifically, the inner diameter of the mounting groove 210 is larger than the outer diameter of the first wheel frame 22, so that a space is reserved for the first traveling assembly 20 to rotate.

Specifically, the first traveling assembly 20 is disposed in the mounting groove 210 of the main frame 200 with a gap 211 between the side walls of the front and rear ends of the mounting groove 210.

As shown in fig. 4 and 5, the second traveling assembly 10 includes a second traveling wheel 11, a second wheel frame 12, and a sliding connection 122, the rotation shaft of the second traveling wheel 11 is disposed in the second wheel frame 12, and the second wheel frame 12 is connected to the main frame 200 through the sliding connection 122 such that the second traveling assembly 10 can slide with respect to the main frame 200.

The first wheel frame 22 is arranged to facilitate the installation of the first travelling wheel 21 and the installation of the first rotating connecting piece 221, so that the whole structure is simple and the installation is convenient; the second wheel frame 12 is convenient for installing the second travelling wheel 11 and the sliding connecting piece 122, so that the whole structure is simple and the installation is convenient.

The second traveling assembly 10 further includes a connection frame 1221 sleeved outside the wheel frame, the wheel frame is connected to the connection frame 1221 through the sliding connection piece 122, and the connection frame 1221 is connected to the main frame 200 through the second rotating connection piece 123, so that the second traveling assembly 10 is slidable and rotatable relative to the main frame 200.

The second wheel frame 12 further has a connecting frame 1221 outside, and the connecting frame 1221 is used for the second wheel frame 12 to slide therein, and meanwhile, the connecting frame 1221 is connected with the main frame 200 through the second rotating connecting piece 123, so as to enable the main frame 200 to slide and rotate relative to the second walking assembly 10. The arrangement of the connecting frame 1221 makes the installation of the rotation and sliding related components simpler, and simultaneously the sliding and the rotation can respectively and independently move without interference.

Specifically, the second traveling assembly 10 slides with the sliding connection 122 through the connection frame 1221, the sliding connection 122 slides through the sliding rail 1222 and the sliding block 1223, the second wheel frame 12 is disposed in the connection frame 1221, the sliding rail 1222 is disposed on the connection frame 1221, and the sliding block 1223 is fixed on the second wheel frame 12 and cooperates with the sliding rail 1222, so that the second wheel frame 12 can slide telescopically along the sliding rail 1222 through the sliding block 1223. In another embodiment, the mounting positions of the sliding rail 1222 and the sliding block 1223 can be interchanged, the sliding rail 1222 is provided on the second wheel frame 12, and the corresponding sliding block 1223 is provided on the connecting frame 1221, which can also realize the sliding function.

As shown in fig. 8 and 9, the sliding block 1223 of the present embodiment is clamped on the upper and lower sides of the sliding rail 1222 to achieve matching, the upper and lower sides of the sliding rail 1222 are provided with a groove, and the sliding block 1223 is provided with a protrusion with a corresponding shape for matching, so that the assembly effect is better.

The connecting frame 1221 includes at least two first side walls disposed opposite to each other along the walking direction, and the side of the two first side walls facing the second wheel frame 12 is provided with a sliding rail 1222 or a sliding block 1223 at the same height position, so as to match with the corresponding sliding rail 1222 or sliding block 1223 on the second wheel frame 12 to realize sliding.

The slide rail 1222 blocks 1223 of the present embodiment are provided on the first side walls of the left and right sides of the connecting frame 1221 and the second wheel frame 12.

In this embodiment, by simultaneously arranging the sliding rails 1222 and the sliding blocks 1223 on two sides of the connecting frame 1221 along the walking direction, the stability is better than that of the arrangement of the upper and lower sides of the connecting frame 1221, so that the situation of eccentric stress is avoided, and the sliding reliability is not facilitated. And the height positions of the two sliding rails 1222 and 1223 are the same, so that the stress on two sides is uniform during sliding, which is beneficial to further improving the stability during sliding.

In other embodiments, the placement of the sled 1222 and the sled 1223 can be interchanged, so long as the relative sliding motion of the two is ensured.

As shown in fig. 10 and 11, the second walking assembly 10 further includes a second rotation coupling member 123, and the second rotation coupling member 123 has substantially the same structure as the first rotation coupling member 221 and also includes a fixing portion 1231 and a rotation portion 1232. The second rotating link 123 is connected to the link 1221 to connect the second traveling assembly 10 to the main frame 200.

The second rotation coupling 123 of the present embodiment also functions to mount the second traveling assembly 10 to the main frame 200200. The second rotary link 123 is specifically installed in the installation groove 210 between the link frame 1221 and the main frame 200.

Through setting up second rotation connecting piece 123, can make second running gear 10 in the degree of freedom of sliding in specific direction, still have the degree of freedom of certain angle rotation in the horizontal plane for second running gear 10 is more nimble, when the position that needs the adjustment to change electric equipment, through the flexible of second running gear 10 and rotatory adjustment main frame 200 relative guide rail 300 rotation, make the change electric equipment body can rotate and twist relative the walking wheel of second running gear 10 in a certain limit, thereby adjust its position better, make the butt joint of change electric equipment and change electric vehicle, locking and unlocking easier, it is also easier to get the discharge cell, promote and change electric efficiency.

As shown in fig. 7 and 10, the connecting frame 1221 further includes second side walls above and below the second wheel frame 12, and each of the two second side walls is connected to the main frame 200 through a second rotational connection 123.

The sliding rails 1222 and the sliding blocks 1223 are disposed on the left and right sides of the connecting frame 1221, and the second rotating connecting member 123 is disposed on the upper and lower sides.

In this embodiment, the rotating connectors are disposed on the upper and lower sides, so that the second wheel frame 12 is located in the middle area of the connecting frame 1221, so that the sliding related structure of the sliding connector 122 and the related structure of the rotating connector can be prevented from interfering with each other, the assembly difficulty and the structural complexity are reduced, and the durability is higher. Meanwhile, under the condition that the traveling assembly mounting mechanism can slide relatively and rotate relative to the main frame 200, the rotatable range of traveling wheels in the main frame 200 relative to the traveling assembly mounting mechanism is larger, the rotation quantity of the power conversion equipment is improved, and therefore the condition of large-angle deflection when the motor vehicle is parked can be adapted.

One of the fixing part 1231 and the rotating part 1232 of the second rotating link 123 is coupled to the upper wall of the mounting groove 210 of the main frame 200, and the other is coupled to the second side wall.

The second side walls of the connecting frame 1221 are provided with a fixing portion 1231 and a rotating portion 1232, the fixing portion 1231 is disposed on the main frame 200, and the rotating portion 1232 is disposed on the connecting frame 1221 in a shaft connection relationship.

In other embodiments, the fixing portion 1231 and the rotating portion 1232 may be disposed on only the second side wall and connected on one side, and other conventional structures capable of rotating in a plane may be used for the connection.

Meanwhile, the second traveling assembly 10 and the main frame 200 of the present embodiment have a gap during assembly, specifically, the inner diameter of the mounting groove 210 is larger than the inner diameter of the second traveling assembly 10, so that the reserved space is convenient for the first traveling assembly 20 to rotate.

Specifically, the first traveling assembly 20 is disposed in the mounting groove 210 of the main frame 200 with a gap 211 between the side walls of the front and rear ends of the mounting groove 210.

The second rotation link 123 is coupled through the fixing portion 1231 and the rotating portion 1232 respectively mounted on the link frame 1221 and the main frame 200, and the rotation of the second rotation link 123 with respect to the main frame 200 is also achieved while the connection of the second rotation link 123 with the main frame 2002 is achieved.

The posture adjustment of the main frame 200 in the present embodiment is achieved by the second traveling assembly 10 and the first traveling assembly 20 at the time of posture adjustment. That is, by driving the second traveling assembly 10 at the rear end of the power exchange device to move by a small extent, the second traveling assembly 10 slides and rotates relative to the main frame 200, so as to drive the rear end of the power exchange device to swing and rotate about the first traveling assembly 20 as a pivot point to align with the power exchange vehicle.

In this embodiment, the two second traveling assemblies 10 located at the rear end of the power conversion device are both provided with driving devices 13, and one of the driving devices 13 drives the corresponding first traveling wheel 21 of the second traveling assembly 10 to move a preset distance, so that sliding occurs between the first traveling wheel 21 and the traveling assembly mounting mechanism, and the power conversion device further rotates around the corresponding second traveling wheel 11 of the first traveling assembly 20 as a circle center by a certain angle, so that the power conversion device is aligned with the power conversion vehicle. In another embodiment, the first traveling wheels 21 of the two second traveling assemblies 10 at the rear end of the power conversion device are driven by the corresponding driving devices 13 to rotate in the same or opposite directions in a differential manner, so that the stress directions and the movement directions of the different second traveling assemblies 10 are different, and the second traveling assemblies 10 slide relative to the main frame 200 under the action of the stress and the movement, so that the rotation of the power conversion device is realized by taking the second traveling wheel 11 corresponding to the first traveling assembly 20 as the center of a circle.

In another embodiment, each second walking assembly 10 is provided with a separate drive means 13. In other embodiments, the driving device 13 may be disposed on one second walking assembly 10 (as shown in fig. 4), while the driving device 13 is not disposed on the other second walking assemblies 10 (as shown in fig. 5). In this case, only the first running wheel 21 of one second running assembly 10 is driven to rotate in cooperation with the corresponding turning function of the first running assembly 20, and posture adjustment can still be completed, that is, at least one driving device 13 can realize the basic function of the scheme.

The posture adjustment may be performed by making the rotation speeds (i.e., differential speeds) different from one running wheel to another by the driving device 13, or by making the rotation directions of the different running wheels different from one another.

The sliding connection 122 is provided with a first stopper having a locking position and an unlocking position for locking or unlocking the relative sliding state between the second traveling assemblies 10 of the main frame 200, respectively.

Through the first stopper, the sliding connection piece 122 of the second walking assembly 10 can be locked when the power conversion equipment moves, so that the power conversion equipment cannot slide, the power conversion equipment is stable when moving, and the power conversion equipment cannot shake due to the sliding of the second walking assembly 10. When the power conversion equipment needs to be adjusted in posture and alignment with the electric vehicle, the second traveling assembly 10 is unlocked to enable the second traveling assembly to slide relatively, so that the power conversion equipment can be twisted relatively to be aligned with the electric vehicle to facilitate battery disassembly and battery assembly.

Specifically, the first stopper is disposed on the sliding connection 122 and has a locked state and an unlocked state, and the first stopper can limit the sliding connection 122 from moving relatively when in the locked state, so that the second traveling assembly 10 is fixed with respect to the main frame 200 when the traveling wheel is driven, and thus the main frame 200 maintains a posture with respect to the traveling direction and travels; the sliding connection 122 is relatively movable when the first stopper is in the unlocked state, so that the second traveling assembly 10 is slidable with respect to the main frame 200 when the traveling wheel is driven, and thus the main frame 200 adjusts the posture with respect to the traveling direction. As described above, when the battery changing device performs posture adjustment, the posture adjustment between the traveling wheels can be completed by differential driving. When the power conversion equipment normally moves without posture adjustment, all travelling wheels are driven to travel at the same speed, and meanwhile, the sliding connecting piece 122 can be locked through the first stopping piece when the power conversion equipment normally moves, so that unnecessary movement of the travelling wheels is avoided.

The second traveling assembly 10 can lock the sliding connection piece 122 through the first stop piece when the power conversion equipment moves, so that the power conversion equipment cannot slide, the power conversion equipment moves more stably, and the power conversion equipment cannot shake due to the sliding of the sliding connection piece 122. When the power conversion device needs to be aligned with the electric vehicle, the sliding connection piece 122 is unlocked to enable the power conversion device to slide relatively, so that the power conversion device can be twisted relatively to be aligned with the electric vehicle to facilitate the disassembly and assembly of the battery.

The first stopper includes a telescopic stopper rod which is extended from the original position and abuts against and presses the sliding rail 1222 at a preset position to limit the relative movement of the sliding rail 1222 and the sliding block 1223 when the first stopper is in the locked state; when the first stopper is in the unlocked state, the stopper rod is retracted to the original position.

The first stopper is provided on the second wheel frame 12, is fixed to the second wheel frame 12, and has a telescopic stopper rod. When in the locked state, the stopper rod protrudes and contacts the rail 1222 and applies pressure, securing the first stopper and the second wheel frame 12 with the rail 1222 by friction to prevent sliding.

The stop bar employs a telescoping mechanism to switch between locked and unlocked conditions, wherein extension of the stop bar against the sled 1222 prevents the sliding connection 122 from sliding relative to the sled 1222 by friction when the latch is locked.

The telescopic direction of the stop rods points to the side surfaces of the sliding rail 1222, and the end shapes of the stop rods are matched with the shapes of the side surfaces of the sliding rail 1222 (see fig. 8), two stop rods are arranged on the upper side surface and the lower side surface of the sliding rail 1222 respectively.

In this embodiment, the two stopping rods are disposed opposite to each other, so that the sliding rail 1222 can be clamped during stopping, friction is greater, and stopping effect is better. Meanwhile, the end shape of the stop rod is matched with the side shape of the sliding rail 1222, so that the matching effect of the stop rod and the sliding rail 1222 is better, and the stop effect is further improved.

In other embodiments, the first stopper may further include a retractable stopper pin, where the sliding rail 1222 is provided with a corresponding pin hole, and when the first stopper is in the locked state, the stopper pin extends from the original position and extends into the pin hole to be locked to limit the relative movement of the sliding rail 1222 and the sliding block 1223; when the first stopper is in the unlocked state, the stopper pin is retracted to the original position.

The first stop piece adopts a hole pin structure, so that the first stop piece has higher limiting reliability on sliding and better stop effect.

The embodiment also provides a power exchange station, which comprises the power exchange equipment.

At least four traveling components are arranged on the power conversion equipment, and load of the power conversion equipment and the battery pack is effectively and dispersedly borne, namely the power conversion equipment is supported by multiple points, so that the whole power conversion equipment is stable, the balance is good, and the reliability is high in the traveling process; secondly, at least one walking component is independently provided with a driving device, namely the driving device and the walking component are in one-to-one correspondence, the driving device can directly drive the walking component without additionally arranging other mechanisms in the middle, so that the walking part is simple in structure and small in occupied space, the power exchange equipment can be more compact, the space of the power exchange station is larger, and the setting requirement is lower.

In another embodiment, as shown in fig. 13-16, the second road wheel 11 and the first road wheel 21 are both sheaves that can be engaged with the guide rail 300 such that the second road wheel 11 and the first road wheel 21 travel along the guide rail 300.

By arranging the grooved wheels and the guide rails 300, the moving track of the power conversion equipment is more accurate, and meanwhile, the power conversion equipment cannot shift in position when posture adjustment is performed.

In another embodiment, the battery exchange apparatus further includes a second stopper assembly 30, as shown in fig. 14 to 17, the second stopper assembly 30 is disposed between the main frame 200 and the link frame 1221 and has a locked state and an unlocked state for locking or unlocking a relative rotation state between the main frame 200 and the traveling assembly mounting mechanism, respectively.

Specifically, the second stopper assembly 30 is mounted on a side wall of the mounting groove 210 of the main frame 200 opposite to the traveling assembly mounting mechanism, and the traveling assembly mounting mechanism is rotated and fixed in a horizontal plane by switching the state.

The traveling assembly mounting mechanism can lock the rotating assembly through the second stop assembly 30 when the battery replacing device moves, so that the connecting frame 1221 cannot rotate relative to the main frame 200, and the battery replacing device is stable when moving and cannot shake due to the rotating assembly. When the power conversion equipment needs to be adjusted in posture and alignment of the electric vehicle, the rotating assembly is unlocked to enable the power conversion equipment to rotate relatively, so that the power conversion equipment can be twisted relatively to align with the electric vehicle, and the battery can be conveniently disassembled and assembled.

As shown in fig. 14 to 17, the connecting frame 1221 has a gap 211 between the front and rear sides in the walking direction and the main frame 200, and the second stopper assembly 30 includes a telescopic wedge 31, and when the second stopper assembly 30 is in the locked state, the wedge 31 protrudes from the original position into the gap 211 to restrict the relative rotation of the connecting frame 1221 and the main frame 200; when the second detent assembly 30 is in the unlocked state, the wedge 31 is retracted into the home position release gap 211.

Specifically, the second stopper members 30 are provided in two, respectively, on the side walls of the mounting groove 210 at both front and rear ends in the traveling direction, and the narrower end of the wedge 31 is aligned with the gap 211 between the mounting groove 210 and the connecting frame 1221. The rear end of the second stopping assembly 30 is a cylinder, the wedge block 31 can be ejected out through the cylinder, and is embedded into the gap 211 and clamped, so that the front section and the rear section of the connecting frame 1221 lose freedom degree, the connecting frame 1221 and the mounting groove 210 of the main frame 200 are relatively fixed and cannot rotate, the cylinder can also retract the wedge block 31 to enable the wedge block to be drawn back to the initial position, and the gap 211 is released, so that the connecting frame 1221 can rotate.

There is a gap 211 between the link 1221 and the main frame 200 at both sides, the gap 211 can make it have a degree of freedom of rotation, the second stop assembly 30 is disposed at the two sides, a telescopic wedge 31 is adopted, the narrower end of which faces the gap 211 between the link 1221 and the main frame 200, in the locked state, the wedge 31 stretches out and snaps into the gap 211 between the link 1221 and the main frame 200, so that there is no degree of freedom of rotation between the link 1221 and the main frame 200 and cannot rotate, in the unlocked state, the wedge 31 is retracted to the original position, the gap 211 is released, and the rotation assembly can rotate.

As shown in fig. 15, the first traveling assembly 20 also includes a second stopper assembly 30 having the same structure, which can prevent the first traveling assembly 20 from rotating when the power conversion apparatus is traveling normally. The first travel assembly 20 does not include the link 1221, and thus the second stopper assembly 30 is engaged with the first wheel frame 22, and is caught in a gap between the sidewall of the mounting groove 210 and the first wheel frame 22 in the locked state.

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 (13)

1. The power conversion equipment is characterized by comprising at least four traveling assemblies, wherein the traveling assemblies are used for driving the power conversion equipment to move along a preset traveling direction and are respectively positioned at the front end and the rear end of the traveling direction, and at least one of the traveling assemblies is independently connected with a driving device.

2. The power conversion equipment according to claim 1, wherein at least one of the traveling components located on the left and right sides of the power conversion equipment is independently connected with the driving device along the traveling direction, and the traveling components independently connected with the driving device are located at the same end of the power conversion equipment in the front-rear direction.

3. The power conversion equipment according to claim 1 or 2, wherein the power conversion equipment comprises a main frame and four traveling components, two traveling components are respectively arranged at left and right sides of the main frame at intervals along the traveling direction of the power conversion equipment, and the two traveling components arranged at intervals are respectively positioned at the front end and the rear end of the main frame along the traveling direction.

4. The power conversion equipment according to claim 1, wherein at least one traveling wheel of the traveling assembly located at both sides of the power conversion equipment is provided as a sheave along the traveling direction, and the sheave is engaged with a preset guide rail so that the power conversion equipment travels along the guide rail.

5. The power conversion equipment of claim 1, further comprising a mounting bracket coupled to the travel assembly and movable across the rail relative to the rail such that the power conversion equipment is always traveling along the rail.

6. The battery charging device according to claim 5, wherein the mounting frame comprises a plurality of limiting portions arranged on both sides of the guide rail along the extending direction of the guide rail and a mounting portion connected with the traveling assembly, the mounting portion is arranged on the guide rail in a straddling manner along the width direction of the guide rail and is connected with the plurality of limiting portions on both sides of the guide rail, and the limiting portions are rotatably arranged so as to enable the battery charging device to roll along the side walls of the guide rail in a manner of being attached to the side walls of the guide rail in the traveling process of the battery charging device along the guide rail.

7. The battery exchange apparatus according to claim 6, wherein the mounting portion includes a mounting plate located above the guide rail and extension plates extending downward from both sides of the mounting plate to both sides of the guide rail, the extension plates being for connection to the limiting portion, the mounting plate having wheel receiving areas for receiving the road wheels of the road assembly.

8. A power conversion apparatus according to claim 3, wherein one of the traveling assemblies is a first traveling assembly rotatably connected to the main frame, the other three traveling assemblies are second traveling assemblies slidably connected to the main frame in a direction perpendicular to the traveling direction, and the driving device is independently provided in each of the two second traveling assemblies located at the front end or the rear end of the main frame in the traveling direction.

9. The power conversion apparatus according to claim 8, wherein the first traveling assembly includes a first traveling wheel, a first wheel frame, and a first rotation link, a rotation shaft of the first traveling wheel being provided in the first wheel frame, the first wheel frame being connected to the main frame through the first rotation link such that the first traveling assembly is rotatable with respect to the main frame; and/or the second walking assembly comprises a second walking wheel, a second wheel frame and a sliding connecting piece, wherein a rotating shaft of the second walking wheel is arranged in the second wheel frame, and the second wheel frame is connected with the main frame through the sliding connecting piece so that the second walking assembly can slide relative to the main frame.

10. The battery exchange device of claim 9 wherein the second traveling assembly further comprises a connecting frame sleeved outside the second wheel frame, the second wheel frame is connected to the connecting frame by the sliding connecting piece, and the connecting frame is connected to the main frame by a second rotating connecting piece so that the second traveling assembly can slide and rotate relative to the main frame.

11. The battery exchange device of claim 9 wherein the sliding connection is provided with a first stop member having a locked position and an unlocked position for locking or unlocking, respectively, the relative sliding state between the second traveling assemblies of the main frame.

12. The power conversion equipment according to claim 10, wherein a second stop component is arranged on the power conversion equipment, and the second stop component is arranged between the main frame and the connecting frame and has a locking state and an unlocking state, and is used for locking or unlocking the relative rotation state between the main frame and the second walking component respectively; and/or

The second stop component is arranged between the main frame and the first wheel frame and is provided with a locking state and an unlocking state, and the second stop component is respectively used for locking or unlocking the relative rotation state between the main frame and the first travelling component.

13. A power exchange station, characterized in that it comprises a power exchange device according to any one of claims 1 to 12.

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