CN219312727U

CN219312727U - Battery replacement equipment

Info

Publication number: CN219312727U
Application number: CN202223603140.7U
Authority: CN
Inventors: 张建平; 于新瑞; 祝天安; 祝明
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-30
Publication date: 2023-07-07
Anticipated expiration: 2032-12-30
Also published as: CN117774639A; CN219096675U; CN219096683U; CN219487565U; CN219312872U; CN219600897U; CN117227566A; CN219312729U; CN219096534U; CN220180550U; CN220009715U; CN116653873A; CN219106430U; CN116654103A; CN117239326A; CN117227564A; CN219096478U; CN219600898U; CN219769680U; CN219096674U

Abstract

The utility model relates to the technical field of new energy power conversion, and particularly discloses power conversion equipment which comprises a power conversion platform and a lifting device, wherein the lifting device acts on the power conversion platform to enable the power conversion platform to lift, the lifting device comprises a lifting driving unit and a transmission unit which are in transmission connection, the transmission unit comprises a connecting rod type telescopic mechanism, the connecting rod type telescopic mechanism comprises two rod assemblies which are in cross connection, and the same side of the two rod assemblies faces the power conversion platform. The battery exchange equipment provided by the utility model comprises the lifting device which acts on the battery exchange platform, so that the battery exchange platform is driven to move up and down in the process of disassembling or installing a battery pack of the battery exchange equipment, the battery exchange equipment is safe and reliable, the connecting rod type telescopic mechanism can improve the stability and the verticality of the lifting of the battery exchange platform, the space occupied by the relative movement direction can be saved, and the structure is compact. The same side of two pole subassemblies is towards trading the electric platform, and the structure is simplified reduces the horizontal volume of trading equipment, reduces whole size, improves and trades electric efficiency.

Description

Battery replacement equipment

Technical Field

The utility model relates to the technical field of new energy power conversion, in particular to power conversion equipment.

Background

With the development and popularization of new energy vehicles, the battery pack quick-change technology also develops rapidly. At present, the development of quick-change technology of small passenger cars is most mature, and batteries of the passenger cars are fixed on a chassis of the car, so that when a battery pack is replaced, special battery replacement equipment is required to be moved to the bottom of the car for battery disassembly or installation. Moreover, due to the small weight of the passenger car, the volume of the battery pack is relatively small, and the operability of battery replacement is very convenient.

However, for large vehicles, such as heavy trucks and light trucks, the vehicle body and cargo weight are large, resulting in large vehicles requiring a high battery pack capacity that must be large enough to support hundreds of kilometers of travel. Therefore, in the prior art, large battery containers of a new energy series are fixed on a girder of a vehicle in a top hanging mode, and the battery containers are arranged close to a cab, so that larger potential safety hazards are brought to a driver and the vehicle in the driving process and the top hanging power change process; if the battery fails, the driver is directly injured. In addition, the lifting mode has high requirements on the place of the power exchange station, and the power exchange station is required to have a large enough area to execute the battery transferring and the battery storing of the lifting equipment, so that the station building cost is high.

Therefore, for large vehicles, there is a strong need for a safer and more reliable power conversion mode that is easy to popularize. For example, a chassis-type power conversion mode of a passenger car is adopted. In the chassis type power exchange mode, the power exchange equipment (or called a power exchange trolley) needs to be controlled to be moved to a power exchange position below the power exchange trolley, and then lifting operation and battery pack disassembling or assembling operation are performed to complete the whole power exchange process. However, in this power change process, the lifting device is required to lift the battery pack: including with the original unblock of vehicle lack the battery package decline to the low level in order to make things convenient for lack the battery package to transport to the buffer memory platform and charge and rise full battery Bao Ju to can lock to the high level of vehicle. Because the space at the bottom of the vehicle is limited and the lifting stroke of the battery pack needs to be accurately controlled, the existing lifting device has a complex structure and large occupied space, and the lifting stroke is limited by the height of the power exchange base, the power exchange equipment of the lifting equipment for chassis type power exchange needs to be optimized.

Disclosure of Invention

The utility model aims to provide a power conversion device which is used for solving at least one of the problems that in the power conversion process of the existing heavy truck and other power conversion vehicles, the power conversion operation is complex, the precision is low, the lifting device structure is complex, the occupied space is large and the like.

In order to achieve the above purpose, the utility model provides a power conversion device, which comprises a power conversion platform and a lifting device, wherein the lifting device acts on the power conversion platform to enable the power conversion platform to lift, the lifting device comprises a lifting driving unit and a transmission unit which are in transmission connection, the transmission unit comprises a connecting rod type telescopic mechanism, the connecting rod type telescopic mechanism comprises two rod assemblies which are in cross connection, and the same side of the two rod assemblies faces the power conversion platform.

The power conversion equipment provided by the utility model comprises the lifting device which acts on the power conversion platform to drive the power conversion platform to move up and down in the process of disassembling or installing the battery pack of the power conversion equipment, so that chassis type power conversion is realized, the power conversion equipment is safer and more reliable and is easy to popularize, and convenience, accuracy and efficiency of front preparation work execution of disassembly and assembly treatment of the battery pack are ensured through the lifting device. The lifting driving unit and the transmission unit are matched to realize the lifting of the level-changing platform, so that the timeliness and feasibility of lifting in-place control can be ensured, and the control precision of the whole lifting process is further ensured. The connecting rod type telescopic mechanism can improve the lifting stability and the verticality of the level changing platform, under the shrinkage state, the occupied space along the moving direction is smaller, the occupied space of the relative moving direction can be saved, meanwhile, the lifting stroke is far beyond the occupied space under the shrinkage state, and the structure of the level changing device in the moving direction is more compact while the lifting stroke is ensured. The same side of two pole subassemblies is towards trading the electricity platform, and then practice thrift the quantity of pole subassembly and the quantity of lift drive unit, and the structure is simplified reduces the horizontal volume of trading equipment, reduces whole size, improves and trades electric efficiency.

Preferably, the connecting rod type telescopic mechanism is provided with a fixed connection position and a lifting connection position for acting on the battery exchange platform, and the lifting connection position is lifted by controlling the crossing angle of the two rod assemblies.

Through the cross angle of two pole subassemblies of control to make lift connection looks fixed connection position go up and down, and then control the lift of trading the electric platform, promote the stationarity and the straightness that trade electric platform lift, simple structure, the lift stroke is big, control accuracy.

Preferably, two ends of each rod assembly are respectively a rotating connecting end for rotating connection and a moving connecting end for moving connection; the upper ends of the two rod assemblies of the connecting rod type telescopic mechanism are respectively a rotating connecting end and a moving connecting end, and form a lifting connecting position together; the lower ends of the two rod assemblies of the connecting rod type telescopic mechanism are respectively a rotary connecting end and a movable connecting end, and form a fixed connecting position together.

Preferably, the rotary connection end is in rotary connection through a rotary pair, and the movable connection end is in sliding connection through a sliding pair.

Preferably, the revolute pair comprises a rotatable seat and a rotatable shaft which are rotatably connected; or the sliding pair comprises a sliding rail and a sliding block which can be connected in a sliding way, or a roller and a sliding groove which can be connected in a sliding way.

The rotating connection of the rotating connection end is realized through the revolute pair, the sliding connection of the movable connection end is realized through the sliding pair, the revolute pair and the sliding pair are used as a structure for transferring connection, the structure is simple and reliable, the reliable connection between the two ends of the rod assembly and other parts can be effectively ensured, the running clamping stagnation or failure of the connecting rod type telescopic mechanism caused by falling and the like is avoided, and the smooth lifting of the power conversion platform is ensured. Preferably, the revolute pair comprises a rotatable seat and a rotatable shaft which are rotatably connected; or the sliding pair comprises a sliding rail and a sliding block which can be connected in a sliding way, or a roller and a sliding groove which can be connected in a sliding way.

Preferably, the lifting device further comprises a lifting stroke protection mechanism, wherein the lifting stroke protection mechanism comprises a first lifting stroke protection mechanism for limiting the movement range of the movable connecting end; alternatively, the lifting stroke protection mechanism includes a second lifting stroke protection mechanism for limiting the relative sliding stroke of the sliding pair.

And the limit position protection of the highest lifting position and the lowest lifting position is realized through the first lifting stroke protection mechanism and the second stroke protection mechanism. The power conversion failure caused by the fact that the lifting of the power conversion platform exceeds the power conversion range is avoided, and the power conversion efficiency is ensured.

Preferably, the plurality of lifting devices are symmetrically arranged on two opposite sides of the power exchange platform.

The opposite sides of the level changing platform can be uniformly acted by the lifting device, so that the level changing platform can be stably lifted, and the smooth power changing is ensured.

Preferably, the lifting device further comprises a switching part, the switching part comprises a switching piece and a low-position extending piece which are connected with each other, the switching piece is connected to the upper end of the connecting rod type telescopic mechanism, and the low-position extending piece extends downwards from the switching piece to form a lifting connection position for reducing the height of the power exchange platform when the connecting rod type telescopic mechanism is in a contracted state.

Through adaptor and low level extension, can further reduce the height of trading the level platform, compact structure can more be fit for the restricted condition in vehicle bottom space.

Preferably, the upper ends of the two rod assemblies of the connecting rod type telescopic mechanism are connected with the adapter, and the low-position extension piece is connected with the adapter and is positioned on the same side of the two rod assemblies of the connecting rod type telescopic mechanism.

Preferably, the adaptor is a groove-shaped section bar, and the connection part of the upper ends of the two rod assemblies of the connecting rod type telescopic mechanism and the adaptor is positioned in the groove of the groove-shaped section bar.

Preferably, the low-level extension piece comprises a vertical plate, the top end of the vertical plate is connected with the adapter piece, and the bottom end of the vertical plate forms the lifting connection position.

Through the riser for change the whole height of electricity equipment after changing the level platform decline and reduce, and then conveniently get into the bottom of vehicle, it is efficient to change the electricity, adapts to the chassis height and the battery package of different co-altitude and size of different motorcycle types change the electricity vehicle.

Preferably, the level shifter is connected to the bottom end of the lower extension member.

The overall height of the level changing platform after descending is further reduced.

Preferably, each lever assembly comprises a lever member, the lever members of the two lever assemblies intersecting each other and being rotatably connected at the intersection.

Each of the bar assemblies includes one bar member, so that the structure of the bar assembly can be simplified and the height of the bar assembly can be lowered.

Preferably, each rod assembly comprises a plurality of rods which are connected in turn in a rotatable manner, the rods of the two rod assemblies are arranged in a one-to-one correspondence manner, and the rods which are correspondingly arranged are mutually intersected and are connected in a rotatable manner at the intersection.

The rod assemblies are arranged on the base, and the rod assemblies are connected with the base in a rotatable mode.

Preferably, the lifting driving unit is used for outputting linear motion to drive the connecting rod type telescopic mechanism to stretch and retract, and the lifting driving unit comprises a linear power output unit.

Preferably, the linear power take-off unit comprises a cylinder and a hydraulic cylinder.

By adopting the linear power output unit, the structure is simple, no complex transmission part is needed, and the structure of the power conversion equipment is simplified.

Preferably, the power conversion device comprises a guiding device for assisting the lifting platform to lift and guiding in the lifting process, and the guiding direction of the guiding device is consistent with the lifting direction of the lifting platform.

Preferably, the guiding device comprises a guide rail arranged on the side surface of the power exchange device and a sliding block arranged on the corresponding surface of the power exchange platform.

Through setting up guider for change electric platform's lifting stability is better, adopts guide rail and slider complex mode to make the guide effect better.

Preferably, the lifting devices are arranged in a plurality, the lifting devices are arranged on two opposite sides of the power exchange platform, and the guide rail is arranged on two sides of the power exchange equipment, on which the lifting devices are not arranged.

The lifting device and the guide rail are arranged at the positions, so that the omnibearing guiding and suspicion of the battery changing platform are realized, the guiding effect is better, and the lifting stability of the battery changing platform is better.

Preferably, the power conversion device further comprises a power conversion base, the power conversion platform is lifted relative to the power conversion base, the guide device comprises a first rod assembly and a second rod assembly, the first rod assembly and the second rod assembly are respectively provided with a movable connecting end used for being movably connected with one of the power conversion platform and the power conversion base, and a rotary connecting end used for being rotatably connected with the other one of the power conversion platform and the power conversion base, and the first rod assembly and the second rod assembly are mutually hinged, so that the guide device stretches along the lifting direction of the power conversion platform along with the lifting of the power conversion platform.

Adopt the direction mode of first pole subassembly and second pole subassembly, can lead to the level platform that trades, compare with guider among the prior art, this direction subassembly is less along the space that removes the direction occupation, can save the space that the direction of height (vertical direction) occupy, can guarantee when lifting the stroke, effectively reduce the height of trading electric equipment to the electric demand that trades of electric vehicle especially lower electric vehicle on chassis is accommodated.

Preferably, the power conversion device further comprises a power conversion base, an accommodating area with an upward opening is formed in the power conversion base, the power conversion platform is lifted in the accommodating area, the size of the accommodating area along the width direction of the power conversion vehicle is matched with the width of the power conversion vehicle, and the lifting device is arranged on two opposite sides of the accommodating area along the width direction of the power conversion vehicle.

Through holding the district, provide and trade the accomodate of electric platform in the lowest position, make things convenient for trading electric equipment and get into the vehicle bottom, realize reducing whole height, guarantee the lift stroke.

Preferably, the power conversion platform is provided with a vehicle body positioning part extending out of the power conversion base, the base is provided with a concave part, and the concave part is used for avoiding the vehicle body positioning part, so that the vehicle body positioning part can extend out of the concave part, and the height of the power conversion platform can be reduced.

The vehicle body positioning part is used for positioning the vehicle, so that the follow-up movement of the power conversion platform is facilitated, the relative stillness of the power conversion equipment and the vehicle in the power conversion and unlocking process is ensured, the power conversion platform is only moved to realize the power conversion and unlocking, the control is accurate and reliable, and the power conversion efficiency is improved.

Preferably, the power conversion equipment further comprises a power conversion base, a traveling mechanism is arranged on the power conversion base, and the traveling mechanism is used for driving the power conversion equipment to move.

Through taking the power conversion base as a supporting foundation, the power conversion equipment is complete and stable in structure, the traveling mechanism is used for driving the power conversion equipment to move, the power conversion is smooth in movement, flexible in use and the power conversion efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a power conversion device according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a matching structure of a link-type telescopic mechanism and a hydraulic cylinder according to an embodiment of the present utility model.

Fig. 3 is a schematic top view illustrating a structure of a power conversion apparatus according to an embodiment of the present utility model.

Fig. 4 is a schematic connection diagram of a hydraulic cylinder of a link-type telescopic mechanism and a power conversion platform according to an embodiment of the present utility model.

Fig. 5 is a schematic structural view of an adapter according to an embodiment of the utility model.

Fig. 6 is a schematic structural view of a guide device according to an embodiment of the present utility model.

Reference numerals illustrate:

100-lifting device; 200-power conversion equipment; 201-a power conversion platform; 2011-a body positioning part; 202-a power conversion base; 2021-accommodation region; 2022-travelling mechanism; 203-a guide; 400-lifting driving unit; 410-a hydraulic cylinder; 510-a link-type telescoping mechanism; 520-bar members; 5201-a first lever; 5202-a second lever; 511-fixed connection; 512-lifting connection position; 513-a first rod assembly; 514-a second lever assembly; 515-rotating the connection; 516-move the connection; 519-sliding pair; 517-revolute pairs; 5171-a swivel base; 5172-rotating shaft; 600-lifting stroke protection mechanism; 710-an adapter; 720-a low extension; 7201-vertical plate.

Detailed Description

In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than as described herein, and therefore the scope of the present utility model is not limited by the specific embodiments disclosed below.

In one embodiment, as shown in fig. 1-6, the utility model provides a power exchange device 200, which comprises a power exchange platform 201 and a lifting device 100, wherein the lifting device 100 acts on the power exchange platform 201 to enable the power exchange platform 201 to lift, the lifting device 100 comprises a lifting driving unit 400 and a transmission unit which are in transmission connection, the transmission unit comprises a connecting rod type telescopic mechanism 510, the connecting rod type telescopic mechanism 510 comprises two rod assemblies which are in cross connection, and the same side of the two rod assemblies faces the power exchange platform 201. Referring to fig. 1, regarding the same side of the two pole assemblies, toward the power conversion platform, namely: the pole assemblies extend along the left side of the power conversion platform so that the right sides of both pole assemblies face the power conversion platform. The transmission principle of the link type telescopic mechanism 510 will be described in detail later in connection with the specific embodiment.

The battery replacing device 200 provided by the utility model comprises the lifting device 100 which acts on the battery replacing platform 201 to drive the battery replacing platform 201 to move up and down in the process of disassembling or assembling the battery pack 300 of the battery replacing device 200, so that chassis type battery replacing is realized, the battery replacing device is safer and more reliable and easy to popularize, and convenience, accuracy and efficiency of front preparation work execution of the disassembly and assembly treatment of the battery pack 300 are ensured through the lifting device 100. Lifting of the level changing table 201 is achieved through cooperation of the lifting driving unit 400 and the connecting rod type telescopic mechanism 510, timeliness and feasibility of lifting in-place control can be guaranteed, and control accuracy of the whole lifting process is further guaranteed. The link-type telescopic mechanism 510 can improve the stability and the verticality of lifting of the power conversion platform 201, and in a contracted state, the space occupied along the moving direction is smaller, so that the space occupied by the relative moving direction can be saved, and meanwhile, the lifting stroke is far beyond the occupied space in the contracted state, so that the structure of the power conversion equipment 200 in the moving direction is more compact while the lifting stroke is ensured. The same side of two pole subassemblies is towards trading level platform 201, and then practices thrift the quantity of pole subassembly and the quantity of lift drive unit 400, and the structure is simplified reduces the horizontal volume of trading equipment, reduces whole size, improves and trades electric efficiency.

In a preferred embodiment, the link-type telescopic mechanism 510 is provided with a fixed connection location 511 and a lifting connection location 512 for acting on the level shifter 201, and the lifting connection location 512 is lifted relative to the fixed connection location 511 by controlling the crossing angle of the two rod assemblies.

The lifting connection position 512 is lifted relative to the fixed connection position 511 by controlling the crossing angle of the two rod assemblies, so that the lifting of the level changing platform 201 is controlled, the lifting stability and the lifting verticality of the level changing platform 201 are improved, the structure is simple, the lifting stroke is large, and the control is accurate.

In a preferred embodiment, as shown in fig. 1, 2 and 3, each lever assembly has a rotational connection 515 for rotational connection and a mobile connection 516 for mobile connection, respectively; the upper ends of the two rod assemblies of the connecting rod type telescopic mechanism 510 are respectively a rotary connecting end 515 and a movable connecting end 516, and form a lifting connecting position 512 together; the lower ends of the two rod assemblies of the link-type telescopic mechanism 510 are a rotation connecting end 515 and a movement connecting end 516 respectively, and together form a fixed connecting position 511.

It should be noted that, due to the change of the crossing angle, the movement of the rotation connection end 515 is not limited to only rotation, for example, the rotation connection end 515 of the first rod 5201 is rotated relative to the second rod 5202 while being pulled by the linear movement of the movement connection end 516 to realize the lifting movement of the rotation connection end 515, so that the rotation connection end of the upper end of the first rod 5201 and the movement connection end of the upper end of the second rod 5202 may form a lifting connection position.

In a preferred embodiment, as shown in fig. 1 and 2, the rotary connection 515 is rotatably coupled by a rotary pair 517 and the movable connection 516 is slidably coupled by a sliding pair 519.

In a preferred embodiment, as shown in fig. 3, the revolute pair 517 includes a revolvable seat 5171 and a revolvable shaft 5172; alternatively, the slide pair 519 comprises a slide rail and a slider that are slidably connected, or a roller and a chute that are slidably connected.

The rotating connection of the rotating connection end 515 is realized through the revolute pair 517, the sliding connection of the movable connection end 516 is realized through the sliding pair 519, the revolute pair 517 and the sliding pair 519 are used as a structure for transferring connection, the structure is simple and reliable, reliable connection between two ends of a rod assembly and other parts can be effectively ensured, the operation clamping stagnation or failure of the connecting rod type telescopic mechanism 510 caused by falling and the like is avoided, and the smooth lifting of the level changing platform 201 is ensured. Preferably, the revolute pair 517 includes a rotatable seat 5171 and a rotatable shaft 5172 rotatably coupled; alternatively, the slide pair 519 comprises a slide rail and a slider that are slidably connected, or a roller and a chute that are slidably connected.

In a preferred embodiment, as shown in fig. 1, the lifting device 100 further comprises a lifting stroke protection mechanism 600, the lifting stroke protection mechanism 600 comprising a first lifting stroke protection mechanism 600 for limiting the movement range of the movable connection end 516; alternatively, the lift stroke protection mechanism 600 includes a second lift stroke protection mechanism 600 for limiting the relative sliding stroke of the slide pair 519.

The limit position protection for the highest and lowest lifting positions is achieved by the first lifting stroke protection mechanism 600 and the second stroke protection mechanism. The power conversion failure caused by the fact that the lifting of the power conversion platform 201 exceeds the power conversion range is avoided, and the power conversion efficiency is ensured.

Preferably, the plurality of lifting devices 100 are symmetrically disposed on two opposite sides of the power conversion platform 201.

The opposite sides of the level changing platform 201 can be uniformly acted by the acting force of the lifting device 100, so that the level changing platform can be stably lifted and lowered, and the smooth power changing is ensured.

In a preferred embodiment, the lifting device 100 further comprises an adapter part, the adapter part comprises an adapter 710 and a low-level extension piece 720 which are connected with each other, the adapter 710 is connected to the upper end of the link-type telescopic mechanism 510, and the low-level extension piece 720 extends downwards from the adapter 710 to form a lifting connection position 512 for lowering the height of the power conversion platform 201 when the link-type telescopic mechanism 510 is in a contracted state.

Through the adapter 710 and the low-level extension 720, the height of the level shifter 201 can be further reduced, and the level shifter is compact and can be more suitable for the situation that the space at the bottom of a vehicle is limited.

Preferably, the upper ends of the two rod assemblies of the link type telescoping mechanism 510 are connected to the adapter 710, and the lower extension 720 is connected to the adapter 710 on the same side of the two rod assemblies of the link type telescoping mechanism 510.

Preferably, the adaptor 710 is provided with a groove-shaped section bar 712 with an opening facing upwards, and the connection of the upper ends of the two rod assemblies of the link-type telescopic mechanism 510 with the adaptor 710 is located in the groove of the groove-shaped section bar 712.

Preferably, the lower extension member 720 includes a vertical plate 7201, the top end of the vertical plate 7201 is connected to the adapter 710, and the bottom end of the vertical plate forms the lifting connection position.

Through riser 7201 and diaphragm structure that is L shape for the whole height of battery charging equipment 200 after the level changing platform 201 descends reduces, and then conveniently gets into the bottom of vehicle, and the battery charging is efficient.

Preferably, the power conversion platform 201 is connected to the bottom end of the lower extension member 720.

Further reducing the overall height of the level shifter 201 after lowering.

Preferably, each rod assembly includes one rod 520, and the rods 520 of the two rod assemblies, i.e., the first rod 5201 and the second rod 5202, are interdigitated and rotatably connected at the intersection.

Each rod assembly includes a rod 520 so that the structure of the rod assembly can be simplified and the height of the rod assembly can be lowered.

Preferably, each rod assembly includes a plurality of rod members 520 rotatably connected in sequence, the rod members 520 of two rod assemblies being disposed in one-to-one correspondence, the correspondingly disposed rod members 520 intersecting each other and rotatably connected at the intersection.

Of course, in another embodiment of the present utility model, a plurality of rod members 520 rotatably connected in sequence may be provided for each rod assembly, so that the height of the rod assembly after lifting may be increased, thereby improving the lifting stroke of the power exchange platform 201.

Preferably, the elevation driving unit 400 is configured to output a linear motion to drive the link-type telescopic mechanism 510 to be telescopic, and the elevation driving unit 400 includes a linear power output unit.

In a preferred embodiment of the present utility model, the linear power take off unit comprises a cylinder, hydraulic cylinder 410. As shown in fig. 1 and 2, a hydraulic cylinder 410 is employed in a preferred embodiment.

By adopting the linear power output unit, the structure is simple, no complicated transmission parts are needed, and the structure of the power conversion device 200 is simplified.

The present utility model is not limited with respect to the specific structure of the guide means, for example:

in embodiment 1, the power exchanging apparatus 200 includes a guide 203 for assisting the lifting of the lifting platform and guiding during the lifting, and the guiding direction of the guide 203 coincides with the lifting direction of the lifting platform.

Preferably, the guiding means 203 comprises a guide rail provided at a side surface in the battery changing device 200 and a slider provided at a corresponding surface of the battery changing table 201.

Through setting up guider 203 for the lift stability of trading level platform 201 is better, adopts guide rail and slider complex mode to make the guide effect better.

Preferably, the lifting device 100 is provided in plurality, the lifting devices 100 are provided on two opposite sides of the power exchanging platform 201, and the guide rail is provided on two sides of the power exchanging device 200 where the lifting device 100 is not provided.

The lifting device 100 and the guide rail adopt the above position arrangement, so that the omnibearing guiding and suspicion of the level changing platform 201 are realized, the guiding effect is better, and the lifting stability of the level changing platform 201 is better.

In embodiment 2, as shown in fig. 6, the power conversion apparatus 200 further includes a power conversion base 202, the power conversion platform 201 is lifted and lowered relative to the power conversion base 202, the guiding device 203 includes a first lever assembly 513 and a second lever assembly 514, each of the first lever assembly 513 and the second lever assembly 514 has a movable connection end 516 for movably connecting with one of the power conversion platform 201 and the power conversion base 202, and a rotational connection end 515 for rotatably connecting with the other of the power conversion platform 201 and the power conversion base 202, and the first lever assembly 513 and the second lever assembly 514 are hinged to each other so that the guiding device 203 is stretched and lowered along the lifting direction of the power conversion platform 201 with the lifting of the power conversion platform 201.

Adopt the direction mode of first pole subassembly 513 and second pole subassembly 514, can lead to trading electric platform 201, compare with guider 203 among the prior art, this direction subassembly is less along the space that removes the direction of movement and occupy, can save the space that the direction of height (vertical direction) occupy, can effectively reduce the height of trading electric equipment 200 when guaranteeing the lift stroke to the electric demand of trading of electric vehicle especially lower electric vehicle of chassis is accommodated.

In a preferred embodiment of the present utility model, the power exchange apparatus 200 further includes a power exchange base 202, a housing area 2021 with an upward opening is formed in the power exchange base 202, the power exchange platform 201 is lifted in the housing area 2021, the dimension of the housing area 2021 along the width direction of the power exchange vehicle is matched with the width of the power exchange vehicle, and the lifting devices 100 are disposed on two opposite sides of the housing area 2021 along the width direction of the power exchange vehicle.

Through holding district 2021, provide the accomodation of trading electric platform 201 in the lowest position, make things convenient for trading electric equipment 200 to get into the vehicle bottom, realize reducing whole height, guarantee the lift stroke.

Preferably, the power conversion platform 201 is provided with a vehicle body positioning portion 2011 extending out of the power conversion base 202, and the power conversion base 202 is provided with a concave portion for avoiding the vehicle body positioning portion, so that the vehicle body positioning portion can extend out of the concave portion, and the height of the power conversion platform 201 can be reduced.

The vehicle body positioning part and the vehicle are used for positioning, so that the follow-up movement locking and unlocking of the power conversion platform 201 are facilitated, the relative rest of the power conversion equipment 200 and the vehicle in the locking and unlocking process is ensured, the power conversion platform 201 is only moved to realize locking and unlocking, the control is accurate and reliable, and the power conversion efficiency is improved.

Preferably, the power conversion device 200 further comprises a power conversion base 202, a traveling mechanism 2022 is arranged on the power conversion base 202, and the traveling mechanism 2022 is used for driving the power conversion device 200 to move.

By taking the power conversion base 202 as a supporting base, the structure of the power conversion equipment 200 is complete and stable, the traveling mechanism 2022 is used for driving the power conversion equipment 200 to move, so that the power conversion movement is smooth, the use is flexible, and the power conversion efficiency is improved.

In the embodiment shown in fig. 1-6, a group of rod assemblies are respectively arranged on the left side and the right side of the power conversion platform, and the motion principle of each rod assembly is as follows: as shown in fig. 2, the hydraulic cylinder 410 stretches and contracts transversely along the arrow, so as to drive the movable connecting end 516 at the bottom end of the first rod 5201 to move transversely, the cross angle of the movable connecting end 516 at the top end of the first rod 5201 changes relative to that of the second rod 5202, the movable connecting end at the top end of the second rod 5202 changes adaptively, and the movable connecting end at the top end of the second rod 5202 moves up and down, so that the movable connecting end at the upper end of the first rod 5201 can form an up-down connecting position with the movable connecting end at the upper end of the second rod 5202, and the level changing table is driven to move up and down.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The description as it relates to "first", "second", etc. in the present utility model is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

The technical solution protected by the present utility model is not limited to the above embodiments, and it should be noted that, the combination of the technical solution of any one embodiment with the technical solution of the other embodiment or embodiments is within the scope of the present utility model. While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims

1. The utility model provides a trade electric equipment, its characterized in that includes trading electric platform and lifting device, lifting device acts on trade electric platform makes trade electric platform goes up and down, lifting device includes lift drive unit and the drive unit of transmission connection, the drive unit includes connecting rod formula telescopic machanism, connecting rod formula telescopic machanism includes two pole subassemblies of cross connection, two the same side of pole subassembly is towards trade electric platform.

2. A power conversion device according to claim 1, wherein the link rod type telescopic mechanism is provided with a fixed connection position and a lifting connection position for acting on the power conversion platform, and the lifting connection position is lifted relative to the fixed connection position by controlling the crossing angle of the two rod assemblies.

3. A power conversion apparatus according to claim 2, wherein both ends of each of said lever assemblies are respectively a rotation connection end for rotation connection and a movement connection end for movement connection; the upper ends of the two rod assemblies of the connecting rod type telescopic mechanism are respectively a rotating connecting end and a moving connecting end, and the two rod assemblies form the lifting connecting position together; the lower ends of the two rod assemblies of the connecting rod type telescopic mechanism are respectively a rotary connecting end and a movable connecting end, and the fixed connecting positions are formed together.

4. A power conversion apparatus according to claim 3, wherein the rotary connection terminal is rotatably connected by a revolute pair, and the movable connection terminal is slidably connected by a sliding pair.

5. The power conversion equipment according to claim 4, wherein the revolute pair comprises a revolute seat and a revolute shaft which are rotatably connected; or the sliding pair comprises a sliding rail and a sliding block which can be connected in a sliding way, or a roller and a sliding groove which can be connected in a sliding way.

6. A power conversion apparatus according to claim 4, wherein the lifting device further comprises a lifting stroke protection mechanism including a first lifting stroke protection mechanism for limiting a movement range of the movable connection end; alternatively, the lifting stroke protection mechanism comprises a second lifting stroke protection mechanism for limiting the relative sliding stroke of the sliding pair.

7. A power conversion apparatus according to claim 1, wherein a plurality of said lifting devices are symmetrically disposed on opposite sides of said power conversion platform.

8. A power conversion device according to claim 1, wherein the lifting means further comprises an adapter part, the adapter part comprising an adapter part and a low-level extension part connected to each other, the adapter part being connected to the upper end of the link-type telescopic mechanism, the low-level extension part extending downwards from the adapter part to form the lifting connection position for lowering the height of the power conversion platform when the link-type telescopic mechanism is in a contracted state.

9. A power conversion apparatus according to claim 8, wherein upper ends of the two rod assemblies of the link type telescopic mechanism are connected to the adapter member, and the low-level extension member is connected to the adapter member and is located on the same side of the two rod assemblies of the link type telescopic mechanism.

10. A power conversion device according to claim 8, wherein the adaptor is a groove-shaped section bar, and the connection part of the upper ends of the two rod assemblies of the connecting rod type telescopic mechanism and the adaptor is positioned in the groove of the groove-shaped section bar.

11. A power conversion apparatus according to claim 8, wherein the low-level extension member includes a riser, a top end of the riser being connected to the adapter, and a bottom end of the riser forming the lifting connection position.

12. A power conversion apparatus according to claim 8, wherein said power conversion stage is connected to a bottom end of said lower extension member.

13. A power conversion apparatus according to claim 1, wherein each of said bar assemblies comprises a bar member, the bar members of two of said bar assemblies intersecting each other and being rotatably connected at the intersection;

or each rod assembly comprises a plurality of rods which are sequentially and rotatably connected, the rods of the two rod assemblies are arranged in one-to-one correspondence, and the rods which are correspondingly arranged are mutually intersected and rotatably connected at the intersection.

14. A power conversion apparatus according to claim 1, wherein the elevation driving unit is configured to output a linear motion to drive the link type telescopic mechanism to be telescopic, and the elevation driving unit includes a linear power output unit.

15. The power conversion apparatus according to claim 14, wherein the linear power output unit comprises a cylinder and a hydraulic cylinder.

16. A power conversion device according to claim 1, characterized in that the power conversion device comprises a guiding device for assisting the lifting of the power conversion platform and guiding the power conversion platform in the lifting process, and the guiding direction of the guiding device is consistent with the lifting direction of the power conversion platform.

17. A power conversion apparatus according to claim 16, wherein the guiding means comprises a guide rail provided at a side surface in the power conversion apparatus and a slider provided at a corresponding surface of the power conversion platform.

18. A power conversion apparatus according to claim 17, wherein a plurality of lifting devices are provided, the plurality of lifting devices being provided on two opposite sides of the power conversion platform, the guide rail being provided on two sides of the power conversion apparatus where the lifting devices are not provided.

19. A power conversion apparatus according to claim 16 further comprising a power conversion base, the power conversion stage being elevated relative to the power conversion base, the guide means comprising a first rod assembly and a second rod assembly, the first rod assembly and the second rod assembly each having a movable connection for movable connection with one of the power conversion stage and the power conversion base and a rotatable connection for rotatable connection with the other of the power conversion stage and the power conversion base, the first rod assembly and the second rod assembly being hinged to each other to allow the guide means to flex in an elevation direction of the power conversion stage as the power conversion stage is elevated.

20. The power conversion device according to claim 1, further comprising a power conversion base, wherein an accommodating area with an upward opening is formed in the power conversion base, the power conversion platform is lifted in the accommodating area, the size of the accommodating area in the width direction of the power conversion vehicle is matched with the width of the power conversion vehicle, and the lifting devices are arranged on two opposite sides of the accommodating area in the width direction of the power conversion vehicle.

21. The power conversion device according to claim 1, wherein the power conversion platform is provided with a vehicle body positioning part extending out of the power conversion base, the base is provided with a concave part, and the concave part is used for avoiding the vehicle body positioning part, so that the vehicle body positioning part can extend out of the concave part, and the height of the power conversion platform can be reduced.

22. The power conversion equipment according to claim 1, further comprising a power conversion base, wherein a traveling mechanism is arranged on the power conversion base and used for driving the power conversion equipment to move.