CN217778397U

CN217778397U - Battery changing station

Info

Publication number: CN217778397U
Application number: CN202023344061.XU
Authority: CN
Inventors: 张建平; 陈新雨
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-11-11
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a power changing station or an energy storage station, which comprises an upper box body and a lower box body, wherein the upper box body comprises an upper shell and a top edge beam arranged at the bottom of the upper shell; and the upper edge beam is provided with a telescopic adjusting mechanism which is used for adjusting the transverse distance between the bottom of the upper shell and the upper edge beam. The utility model discloses set up flexible adjustment mechanism on the roof beam of going up to the bottom of casing and the horizontal interval of roof beam on adjusting, but increase roof beam and the operational space of roof beam counterpoint, treat the roof beam of going up the casing four sides and the back is accomplished in the lower roof beam counterpoint of lower casing four sides, adjust the position to covering casing top down casing bottom through flexible adjustment mechanism, be convenient for go up casing and lower casing junction formation seal structure, the efficiency of last casing, the accuracy of casing counterpoint down and upper and lower box equipment has been improved.

Description

Battery changing station

Technical Field

The utility model relates to an electric automobile trades the electric field, in particular to trade power station.

Background

The new energy vehicle is more and more popular with consumers at present, the energy used by the new energy vehicle is basically electric energy, the new energy vehicle needs to be charged after the electric energy is used up, and due to the limitation of the existing battery technology and charging technology, the new energy vehicle needs to spend a long time when being fully charged, which is not as simple and rapid as the direct refueling of the automobile. Therefore, in order to reduce the waiting time of the user, it is an effective means to replace the battery when the electric energy of the new energy vehicle is quickly exhausted. In order to replace batteries and meet the battery replacement requirements of more and more new energy vehicles, a battery replacement station or an energy storage station needs to be built.

In order to improve the power conversion efficiency of the power conversion station or the energy storage efficiency of the energy storage station, preferably, a greater number of batteries are stored in the power conversion station or the energy storage station, but the greater the number of the stored batteries is, the larger the area for storing the batteries needs to be, so that the occupied area of the power conversion station or the energy storage station is larger, and the station building cost is greatly increased. In order to increase the number of the stored batteries of the battery replacing station or the energy storage station and reduce the occupied area of the battery replacing station or the energy storage station, technicians specially design a double-layer battery replacing station or energy storage station, and increase the accommodating space inside the battery replacing station or the energy storage station by increasing the height of the battery replacing station or the energy storage station. However, in the process of assembling the upper box body and the lower box body of the battery replacement station or the energy storage station, there are a plurality of structures which need to be aligned and connected, such as the four corners and the four sides of the box body need to be aligned accurately, and there is a certain positioning error during the assembling of the upper and lower box bodies, which results in the accurate alignment of the alignment structures which cannot be realized or are difficult to realize simultaneously, thereby resulting in the problem that the upper box body and the lower box body cannot be assembled or the assembling efficiency is low and the stability of the battery replacement station or the energy storage station after the assembling is poor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a trade the station in order to overcome among the prior art the upper strata structure of trading the station and the inaccurate defect of counterpoint when the substructure equipment.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

a power station comprises an upper box body and a lower box body, wherein the upper box body comprises an upper shell and a top edge beam arranged at the bottom of the upper shell, the lower box body comprises a lower shell and a lower edge beam arranged at the top of the lower shell, and the top edge beam and the lower edge beam are fixedly connected;

and the upper boundary beam is provided with a telescopic adjusting mechanism, and the telescopic adjusting mechanism is used for adjusting the transverse distance between the bottom of the upper shell and the upper boundary beam.

In this scheme, when going on box and lower box equipment, because last casing and lower casing have certain positioning error when the equipment, lead to the counterpoint inaccurate and unable equipment, set up flexible adjustment mechanism on the roof beam of going up, adjust the bottom of going up the casing and the horizontal interval of roof beam of going up, when going up box and lower box counterpoint, the horizontal interval of casing bottom and roof beam is gone up in the flexible adjustment mechanism increase of accessible, the operable space of roof beam and roof beam counterpoint is increased, treat the back of the roof beam counterpoint completion of the roof beam of going up box four sides and the lower roof beam of lower box four sides, adjust last casing bottom to the position that covers the casing top down through flexible adjustment mechanism, be convenient for go up casing and lower casing junction and form seal structure, the efficiency of going up the casing, the casing counterpoint accuracy and upper and lower box equipment down has been improved.

Preferably, the bottom of the upper shell is provided with an outwardly-turnable skirt, the upper end of the skirt is rotatably connected to the inner side surface of the bottom of the upper shell, and the lower end of the skirt extends downwards and covers the outer side surface of the top of the lower shell.

In this scheme, thereby set up the shirt rim and make the bottom of last casing in order to cover with the mode installation at the top of casing down, thereby the lower extreme through connecting the shirt rim in the medial surface of last casing bottom and shirt rim covers the lateral surface at the top of casing down, avoids the rainwater to get into from the clearance between shirt rim and last casing or the casing down and trades the station inside, has improved the waterproof sealing nature between the upper and lower casing in order to avoid last casing and the last casing that the positioning error of casing when the equipment leads to down with lower casing can't align.

Preferably, the bottom of the upper case covers an outer side surface of an upper end of the skirt.

In this scheme, above-mentioned setting is used for preventing that the rainwater from exchanging the inside of power station from the junction infiltration of last casing and shirt rim, improves waterproof performance.

Preferably, the inner surface of the skirt is provided with a reinforcing plate, and the reinforcing plate is used for being connected with a telescopic adjusting mechanism on the upper edge beam in a matched mode so as to adjust the turning angle of the skirt.

In this scheme, because the shirt rim is not very thick, take place deformation easily under the external force, set up the reinforcing plate at shirt rim internal surface, avoid flexible adjustment mechanism to make the shirt rim produce deformation when the push-and-pull shirt rim, influence the sealed effect between shirt rim and the upper and lower casing.

Preferably, the skirt is hinged to the upper shell, and a sealing element is arranged above and/or below the hinged position of the skirt on the upper shell.

In this scheme, the sealing member is used for strengthening the sealed effect between shirt rim and the last casing, avoids rainwater or impurity to get into upper and lower box inside.

Preferably, the telescopic adjusting mechanism is provided with a telescopic piece, the telescopic piece is arranged on the upper edge beam, and the telescopic piece is connected with the bottom of the upper shell or the skirt edge so as to adjust the transverse distance between the bottom of the upper shell and the upper edge beam or the transverse distance between the skirt edge and the upper edge beam.

In this scheme, adopt above-mentioned structure, the distance that the bottom or the shirt rim that makes the upper housing body through flexible adjustment mechanism's extensible member can be adjusted with the roof beam on, the inboard of casing on will stretching into the lower casing body when the box is installed to the butt joint under with to form waterproof seal's connection structure, avoid the rainwater to get into the box inboard from upper housing body and lower casing junction.

Preferably, the telescopic part comprises a nut and a screw rod, the screw rod penetrates through the upper edge beam, one end of the screw rod, extending out of the upper edge beam, is connected to the bottom of the upper shell or the inner side surface of the skirt, the other end of the screw rod, extending out of the upper edge beam, is in threaded connection with the nut, the nut is fixedly connected to the upper edge beam, and the screw rod is rotated to drive the bottom of the upper shell or the skirt to be adjustable relative to the upper edge Liang Jianju.

In this scheme, provide a flexible adjustment mechanism's structure, through the screw rod for the rotation of nut, turn into linear motion with the rotary motion of screw rod, simple structure, convenient operation, with low costs.

Preferably, the telescopic part includes a push rod and an adjusting member, the push rod penetrates through the upper edge beam, one end of the push rod penetrating through the upper edge beam is connected to the bottom of the upper housing or the inner side surface of the skirt, and the adjusting member is connected to the push rod and used for driving the push rod to move in the axial direction so as to adjust the transverse distance between the bottom of the upper housing and the upper edge beam or the transverse distance between the skirt and the upper edge beam.

In this scheme, a structure of flexible adjustment mechanism is provided, the bottom of casing or the shirt rim of the bottom of last casing and the interval between the roof beam are adjusted through the cooperation of push rod and regulating member, go up the casing and counterpoint with the connection of casing down when being convenient for go up the box and lower box connection installation.

Preferably, the push rod is a screw rod, the adjusting member is a nut, the screw rod is in threaded engagement with the nut, and the nut is rotated to drive the screw rod to move along the axial direction.

In this scheme, provide a concrete structure of push rod and adjusting member, the rotation through the nut drives the screw rod and moves towards or deviates from last casing, turns into the linear motion of screw rod with the rotation of nut, reduces telescopic adjusting mechanism's occupation space.

Preferably, the upper edge beam is further provided with a limiting mechanism, and the limiting mechanism is used for limiting the nut to move relative to the upper edge beam in the axial direction of the screw rod.

In this scheme, remove on horizontal through stop gear restriction nut, and then can make screw rod lateral shifting through rotating the nut, drive the relative roof beam of shirt rim and remove.

Preferably, the limiting mechanism is fixedly connected with the upper edge beam, a through hole for the screw to penetrate through is formed in the limiting mechanism, and the nut is located between the limiting mechanism and the upper edge beam.

In this scheme, provide a stop gear's position overall arrangement, with stop gear and roof side rail fixed connection, be convenient for wear to establish the moving direction of screw rod and restriction nut.

Preferably, the telescopic adjusting mechanism is an electric push rod, the electric push rod is arranged on the upper edge beam, and a telescopic end of the electric push rod is fixed with the bottom or the skirt edge of the upper shell;

or the telescopic adjusting mechanism is a pneumatic push rod, the pneumatic push rod is arranged on the upper edge beam, and the telescopic end of the pneumatic push rod is fixed with the bottom of the upper shell or the skirt edge.

In this scheme, a concrete structure of flexible adjustment mechanism is provided, electric putter and pneumatic putter simple structure, convenient operation can realize automatic control, and the alignment accuracy is higher.

Preferably, the upper edge beam and the lower edge beam are fixedly connected through welding or a threaded connecting piece;

and/or the presence of a gas in the gas,

the upper boundary beam is fixedly welded with the upper shell or fixedly connected with the upper shell through a threaded connecting piece;

and/or the presence of a gas in the gas,

the lower boundary beam is fixedly welded with the lower shell or fixedly connected with the lower shell through a threaded connecting piece.

In this scheme, roof side rail and lower bolster are connected fixedly through welded fastening or threaded connection spare, and simple to operate is swift, and the roof side rail is fixed through welding or threaded connection spare with last casing and/or lower bolster and lower casing welding, has increased joint strength, and the inside of avoiding going up casing and/or lower casing to drop because of external environment factor makes the inside that trades the power station expose in external environment.

Preferably, the bottom surface of the roof side rail abuts the top surface of the roof side rail.

In this scheme, the setting is convenient for the location installation of roof side rail and rocker.

Preferably, the bottom surface of the roof side rail and the top surface of the rocker side rail are both planar.

In this scheme, the location installation of roof side rail and rocker is convenient for in above-mentioned setting, improves the joint strength of upper and lower rocker.

Preferably, the bottom surface of the roof side rail and the bottom surface of the rocker side rail are of a corresponding ladder structure.

In this scheme, the setting is convenient for the quick location of roof side rail and lower boundary beam to the waterproof sealing performance of upper and lower boundary beam junction has been improved.

Preferably, the bottom of the ladder structure of the upper edge beam is lower than the top of the ladder structure of the lower edge beam, and the inner surface of the upper edge Liang Jieti structure covers the outer surface of the lower edge Liang Jieti structure.

In this scheme, above-mentioned setting is used for preventing that the gap infiltration of rainwater follow junction of roof side rail and rocker from trading the inside of power station, improves the water-proof effects who trades the power station.

Preferably, the upper edge beam is arranged on the inner side surface of the upper shell, and the lower edge beam is arranged on the inner side surface of the lower shell.

In this scheme, the above-mentioned setting is convenient for the later stage other parts of installation in inner space, covers the boundary beam and covers the boundary beam down through last casing, has improved the waterproof sealing nature of box concatenation department.

Preferably, the power station further comprises a lower connecting plate, a first part of the lower connecting plate is fixed on the lower edge beam, a second part of the lower connecting plate is fixed on the lower shell, and the lower connecting plate is detachably connected with the upper edge beam;

or the first part of the lower connecting plate is fixed between the upper edge beam and the lower edge beam, and the second part of the lower connecting plate is fixed on the lower shell or the upper shell.

In this scheme, the lower bolster passes through the lower junction plate to be connected in lower casing or last casing, has improved the joint strength of lower bolster and lower casing.

Preferably, the lower connecting plate is connected with the lower shell in a sealing way;

and/or the presence of a gas in the gas,

the lower connecting plate is connected with the top of the lower shell.

In this scheme, above-mentioned setting is used for preventing down the junction production gap between connecting plate and the lower casing, avoids the rainwater infiltration to trade the inside of power station, influences the normal operating that trades electrical equipment.

Preferably, the inner side surface of the upper shell is provided with a plurality of first concave parts arranged at intervals, the outer side surface of the lower shell is provided with a plurality of first convex parts arranged at intervals and matched with the first concave parts in shape, the first convex parts and the first concave parts extend in the vertical direction, and the first convex parts are located in the accommodating space of the first concave parts.

In this scheme, the installation of the direction between casing and the lower casing is convenient for on the one hand to the aforesaid setting, improves the installation effectiveness, and on the other hand can strengthen the intensity of casing and lower casing.

Preferably, the inner side surface of the lower shell is provided with a plurality of spaced second concave parts formed by a plurality of first convex parts, and the end surface of the lower connecting plate is provided with a plurality of second convex parts matched with a plurality of second concave parts of the lower shell.

In this scheme, the above-mentioned structural strength who sets up further increase the casing and descend the casing conveniently carries out the water conservancy diversion to the rainwater, makes the rainwater flow away according to predetermined water drainage tank, avoids the rainwater infiltration to trade the inside in power station, influences the normal operating that trades electrical equipment.

Preferably, the power station further comprises an upper connecting plate, one end of the upper connecting plate, facing the upper shell, is fixedly connected with the inner side surface of the upper shell, and the upper connecting plate is fixedly connected with the upper edge beam.

In this scheme, the roof side rail passes through the upper junction plate to be connected in last casing, improves the joint strength of roof side rail and last casing.

Preferably, the end surface of the upper connecting plate facing one end of the upper shell is matched with the shape of the inner side surface of the upper shell.

In this scheme, further strengthen the joint strength between upper housing and the roof side rail, make things convenient for welded fastening.

Preferably, the end surface of the upper connecting plate facing one end of the upper shell is provided with a plurality of third protruding portions, the inner side surface of the upper shell is provided with a plurality of first recessed portions arranged at intervals, and the third protruding portions are matched with the first recessed portions.

In this scheme, the setting is used for further strengthening the joint strength between last casing and the roof side rail.

On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in: the utility model discloses in order to avoid last casing and lower casing to produce when the equipment counterpoint inaccurate and unable equipment because positioning error, set up flexible adjustment mechanism on the roof beam of going up, with the horizontal interval of the bottom of adjusting the casing and last roof beam, when will going up box and lower box counterpoint, the horizontal interval of casing bottom and last roof beam is gone up in the flexible adjustment mechanism increase of accessible, the operable space of increase roof beam and lower roof beam counterpoint, treat the roof beam of going up the casing four sides and the lower roof beam of lower box four sides counterpoint and accomplish the back, adjust the position of casing bottom to the cover casing top down through flexible adjustment mechanism, be convenient for go up casing and lower casing junction and form seal structure, the casing has been improved, the accuracy of casing counterpoint down and the efficiency of upper and lower box equipment.

Drawings

Fig. 1 is a schematic perspective view of a power exchanging station according to an embodiment of the present invention.

Fig. 2 is a schematic view of a three-dimensional structure of the power station according to an embodiment of the present invention after the external upper casing and the external lower casing are removed.

Fig. 3 is a schematic view of a partial structure of the power station according to the preferred embodiment of the present invention when the upper box and the lower box are spliced.

Fig. 4 is a schematic structural view of the upper housing and the lower housing of the preferred embodiment of the present invention when they are butt-mounted.

Fig. 5 is an enlarged schematic view of a point a in fig. 4.

Fig. 6 is a partial schematic view of the upper housing and the lower housing of the preferred embodiment of the present invention when they are mounted in a butt joint.

Fig. 7 is a schematic structural view of the upper housing and the lower housing after butt-joint installation according to the preferred embodiment of the present invention.

Fig. 8 is an enlarged schematic view of B in fig. 7.

Fig. 9 is a partial schematic view of the upper housing and the lower housing after butt-joint installation according to the preferred embodiment of the present invention.

Fig. 10 is a schematic view illustrating the assembly of the upper housing and the upper side beam according to the preferred embodiment of the present invention.

Fig. 11 is a schematic view of the assembly of the upper side rail and the lower side rail according to the preferred embodiment of the present invention.

Fig. 12 is a schematic view illustrating the assembly of the lower shell and the lower side beam according to the preferred embodiment of the present invention.

Fig. 13 is a schematic view of the overall layout of the interior of the lower case according to the preferred embodiment of the present invention.

Fig. 14 is a schematic view showing the butt-joint installation of the upper and lower side beams in the stepped shape according to the preferred embodiment of the present invention.

Description of reference numerals:

upper case 100

The upper casing 110

First recess 1101

Fourth boss 1102

Skirt 111

Skirt flange 1112

Skirt recess 1111

Hinge shaft 112

Reinforcing plate 113

Roof side rail 120

Upper upright column 130

Screw 140

Nut 150

Limiting mechanism 160

Lower case 200

Lower case 210

First boss 2101

Second depression 2102

Lower boundary beam 220

Lower column 230

Battery changing chamber 300

Charging chamber 400

Charging stand 401

Elevator 402

Master control box 403

Lifting area 404

Lower connecting plate 500

Second convex portion 501

Upper connecting plate 600

Third boss 601

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, a swapping station is illustrated according to an embodiment of the present invention.

The charging station comprises a charging chamber 300 and at least one charging chamber 400 respectively arranged at one side of the charging chamber 300. The power change station may also include a monitoring room, a storage room, and the like.

The battery replacing room 300 is used for bearing a vehicle with a battery pack to be replaced, the vehicle drives into and stops at the battery replacing room 300, an old battery pack to be charged on the vehicle is detached by the battery replacing trolley, a new battery pack which is fully charged is installed on the old battery pack, and the old battery pack on the vehicle is transported to the charging room 400 for charging after the old battery pack on the vehicle is detached by the battery replacing trolley.

As shown in fig. 13, the charging room 400 accommodates a charging rack 401, a lifter 402, a main control box 403, and the like, the charging rack 401 is used for accommodating battery packs and charging old battery packs, and the lifter 402 is used for exchanging battery packs with a battery replacement cart and taking out the battery packs from the charging rack 401 or putting them into the charging rack 401. At least two rows of charging frames 401 are arranged in the charging room 400 in parallel along the direction perpendicular to the driving direction of the vehicle, an elevator 402 is arranged in an elevating area 404 between the two rows of charging frames 401, a main control box 403 is arranged on one side of the charging room 400 close to the battery replacing room 300, and the main control box 403 is used for controlling electric equipment in the battery replacing station.

As shown in fig. 1 and 2, the power exchange station of the present embodiment is supported by a plurality of frames and is partitioned into a plurality of function rooms such as a charging room 400, a monitoring room, a storage room, and the like, and is covered with a housing on an outer surface thereof to isolate the inside and outside of the function room, prevent external rain water, dust, and other impurities from entering the inside of the power exchange station, and cause damage to electrical components in the power exchange station such as a charging rack 401 and a main control box 403.

The power exchanging station in this embodiment has an upper and lower two-layer structure, and is assembled by an upper case 100 and a lower case 200 that are manufactured in advance. A functional room such as a monitor room and a storage room is provided in the upper housing 100, and a charging room 400 and a battery replacement room 300 are provided in the lower housing 200.

As shown in fig. 3, in the present embodiment, the upper box 100 includes an upper shell 110 and a top side rail 120 disposed at the bottom of the upper shell 110, the lower box 200 includes a lower shell 210 and a bottom side rail 220 disposed at the top of the lower shell 210, and the top side rail 120 is disposed above the bottom side rail 220 and is fixedly connected to the bottom side rail 220.

The power conversion station in the embodiment adopts a combined structure of the upper box body 100 and the lower box body 200, so that the modular construction is facilitated, the construction period and the construction cost are shortened, and the upper box body 100 and the lower box body 200 adopt detachable installation structures, so that the capacity expansion and the transformation in the later period are facilitated.

As shown in fig. 4-10, the roof side rail 120 is provided with a telescopic adjustment mechanism for adjusting the lateral distance between the bottom of the upper shell 110 and the roof side rail 120.

When the upper box 100 and the lower box 200 are assembled, because a certain positioning error exists between the upper shell 110 and the lower shell 210 during the assembly, the alignment is not accurate and the assembly cannot be performed, the telescopic adjusting mechanism is arranged on the upper side beam 120 to adjust the transverse distance between the bottom of the upper shell 110 and the upper side beam 120, when the upper box 100 and the lower box 200 are aligned, the transverse distance between the bottom of the upper shell 110 and the upper side beam 120 can be increased through the telescopic adjusting mechanism, the operable space for aligning the upper side beam 120 and the lower side beam 220 can be increased, after the alignment between the upper side beams 120 at four sides of the upper box 100 and the lower side beams 220 at four sides of the lower box 200 is completed, the bottom of the upper shell 110 is adjusted to the position covering the top of the lower shell 210 through the telescopic adjusting mechanism, the sealing structure is conveniently formed at the connection part of the upper shell 110 and the lower shell 210, and the alignment accuracy of the upper shell 110 and the assembly efficiency of the upper box and the lower box 210 are improved.

As shown in fig. 5 and 6, the bottom of the upper casing 110 has an outwardly reversible skirt 111, the upper end of the skirt 111 is rotatably connected to the inner side of the bottom of the upper casing 110, the bottom of the upper casing 110 covers the outer side of the upper end of the skirt 111, and the lower end of the skirt 111 extends downward and covers the outer side of the top of the lower casing 210. The skirt 111 is arranged at the bottom of the upper shell 110, so that the upper shell 110 and the lower shell 210 cannot be aligned due to positioning errors of the upper shell 110 and the lower shell 210 during assembly, the bottom of the upper shell 110 is mounted in a manner of covering the top of the lower shell 210, meanwhile, rainwater is prevented from entering the inside of the battery replacement station from a gap between the skirt 111 and the upper shell 110 or a gap between the skirt 111 and the lower shell 210 by connecting the skirt 111 to the inner side surface of the bottom of the upper shell 110 and the outer side surface of the lower end of the skirt 111 covering the top of the lower shell 210, and the waterproof sealing performance between the upper shell 110 and the lower shell 210 is improved.

As shown in fig. 5, the skirt 111 is hinged to the upper casing 110 by a hinge shaft 112, and the telescopic adjustment mechanism is used to adjust the distance between the skirt 111 and the upper side rail 120 at the bottom of the upper casing 110. Preferably, seals (not shown) are disposed above and below the hinge of the skirt 111 on the upper case 110, and the seals are provided to enhance the sealing effect between the skirt 111 and the upper case 110, so as to prevent rainwater or impurities from entering the inside of the upper case 100 and the lower case 200. In other alternative embodiments, in order to simplify the assembly steps and improve the assembly efficiency, a sealing member may be provided only above or below the hinge of the skirt 111 on the upper housing 110, but the sealing effect at the hinge is also required to be ensured. In this embodiment, sealing members are disposed at the upper and lower sides of the hinge joint of the upper housing 110 and the skirt 111, so as to further ensure the sealing effect at the hinge joint and improve the sealing performance of the power station.

The inner surface of the skirt 111 is provided with a reinforcing plate 113, and the reinforcing plate 113 is used for being matched and connected with a telescopic adjusting mechanism on the upper edge beam 120 so as to adjust the turning angle of the skirt 111. Because the skirt 111 is made of a thin plate, local stress is easy to deform, and the reinforcing plate 113 is arranged on the inner surface of the skirt 111, the phenomenon that the telescopic adjusting mechanism deforms the skirt 111 when the telescopic adjusting mechanism pushes and pulls the skirt 111 to influence the sealing effect between the skirt 111 and the upper shell 210 and the lower shell 210 is avoided. In the present embodiment, the reinforcing plate 113 has a screw seat structure, a screw hole is provided on a side of the screw seat facing the roof side rail 120, and the reinforcing plate 113 is screwed and fixedly connected to the telescopic member of the telescopic adjustment mechanism provided on the roof side rail 120 through the screw hole.

In another embodiment, the reinforcement plate 113 may also be provided with a threaded post facing the roof side rail 120 for threadably securing engagement with a telescoping member of a telescoping adjustment mechanism provided on the roof side rail 120. In other embodiments, the reinforcing plate 113 may be a plate-shaped structure, and the reinforcing plate 113 is welded to the telescopic member of the telescopic adjustment mechanism. In other alternative embodiments, the reinforcing plate may be other reinforcing connecting structures that can achieve the above-described effects.

This flexible adjustment mechanism has the extensible member, and the extensible member is located on the roof side rail, and on the extensible member was located roof side rail 120, the extensible member run through roof side rail 120 and with reinforcing plate 113 fixed connection on the shirt rim 111, the extensible member is connected with the shirt rim 111 of the bottom of last casing 110 in order to adjust the horizontal interval of shirt rim 111 and roof side rail 120. The distance between the skirt 111 at the bottom of the upper shell 110 and the upper edge beam 120 can be adjusted through the telescopic piece of the telescopic adjusting mechanism, so that the lower shell 210 can be conveniently stretched into the inner side of the upper shell 110 when the upper box 100 and the lower box 200 are installed in a butt joint mode, a sealed and waterproof connecting structure is formed, and rainwater is prevented from entering the inner side of the box from the joint of the upper shell 110 and the lower shell 210.

The telescopic part comprises a push rod and an adjusting component, the push rod penetrates through the upper edge beam 120, one end of the push rod, which penetrates through the upper edge beam 120, is connected to the reinforcing plate 113 on the inner side face of the skirt 111, and the adjusting component is connected to the push rod and used for driving the push rod to move axially so as to adjust the transverse distance between the skirt 111 and the upper edge beam 120. The distance between the skirt 111 of the bottom of the upper case 110 and the roof side rail 120 is adjusted by the cooperation of the push rod and the adjustment member. The transverse distance between the skirt 111 at the bottom of the upper shell 110 and the upper edge beam 120 is adjusted through the matching of the push rod and the adjusting member, so that the upper shell 110 and the lower shell 210 can be conveniently connected and aligned when the upper box 100 and the lower box 200 are connected and mounted.

Specifically, as shown in fig. 4 to 10, the push rod is a screw 140, the adjusting member is a nut 150, one end of the screw 140 is threadedly coupled to the reinforcing plate 113, and the other end of the screw 140 is threadedly coupled to the nut 150. In this embodiment, the nut 150 is rotated to drive the screw 140 to move axially, that is, the screw 140 is extended and retracted along the axial direction thereof, so as to adjust the distance between the skirt 111 at the bottom of the upper housing 110 and the upper edge beam 120, and the structure is simple and the cost is low. The embodiment converts the rotation of the nut 150 into the linear motion of the screw 140, and reduces the occupied space of the telescopic adjusting mechanism.

Referring again to fig. 4-10, the top side rail 120 is further provided with a limiting mechanism 160, and the limiting mechanism 160 is used for limiting the movement of the nut 150 in the axial direction of the screw 140 relative to the top side rail 120, so that the screw 140 can be moved transversely by rotating the nut 150, and the skirt 111 can be moved relative to the top side rail 120.

The limiting mechanism 160 is fixedly connected to the roof side rail 120. The limiting mechanism 160 is provided with a through hole for the screw 140 to pass through, and the nut 150 is located between the limiting mechanism 160 and the upper edge beam 120, so as to facilitate the passing through of the screw 140 and the limitation of the moving direction of the nut 150.

In this embodiment, the limiting mechanism 160 is an L-shaped plate, which forms an accommodating space with a side of the upper side rail 120 away from the upper shell 110, and the nut 150 is located in the accommodating space. Turning the nut 150 causes the nut 150 to move axially of the threaded rod 140 until the nut 150 encounters a vertical surface of the L-shaped plate or the outer side of the roof side rail 120 and is constrained from further movement in the axial direction. At this time, if the nut 150 is further rotated, the screw 140 is moved in the axial direction, thereby adjusting the distance between the skirt 111 connected to the end of the screw 140 and the roof side rail 120. In order to avoid the mechanical mechanisms from locking each other, a certain swing space needs to be provided for the screw.

In other alternative embodiments, the nut 150 may be fixedly connected to the roof side rail 120, the screw 140 penetrates through the roof side rail 120, one end of the screw 140 extending out of the roof side rail 120 is connected to the inner side surface of the skirt at the bottom of the upper shell 110, the other end of the screw 140 extending out of the roof side rail 120 is in threaded connection with the nut 150, and the screw 140 is moved in the axial direction of the nut 150 under the restriction of the nut 150 by rotating the screw 140, so as to adjust the distance between the skirt 111 and the roof side rail 120. The rotation of the screw 140 relative to the nut 150 converts the rotation of the screw 140 into linear motion, and has simple structure, convenient operation and low cost.

Or, in other optional embodiments, a threaded seat is fixed on the inner side surface of the skirt 111, one end of the screw rod is in threaded connection with a threaded hole on the threaded seat, and the other end of the screw rod passes through the roof side rail 120 and abuts against a vertical plate of the limiting mechanism to limit the screw rod to move axially, and at this time, the screw rod is rotated to enable the screw rod and the threaded seat to move relatively, so as to drive the skirt 111 to move. Both embodiments also require a certain amount of space for the screw to oscillate.

Alternatively, in other alternative embodiments, the telescopic adjusting mechanism may also be an electric push rod or a pneumatic push rod, the electric push rod or the pneumatic push rod is disposed on the upper side beam 120, and the telescopic end of the electric push rod or the pneumatic push rod is fixed to the reinforcing plate 113 on the skirt 111. The distance between the skirt 111 and the upper side beam 120 is adjusted by adopting an electric push rod or a pneumatic push rod, so that the operation is convenient, and the synchronous operation is also facilitated, wherein the pneumatic push rod can be driven by an air bag to move.

In other alternative embodiments, if the skirt 111 is not provided at the bottom of the upper case 110, the inner side of the bottom of the upper case 110 directly covers the outer side of the top of the lower case 210. The telescopic adjusting mechanism is provided for adjusting the distance between the inner side surface of the bottom of the upper shell 110 and the upper side beam 120. At this time, the bottom of the upper case 110 and the roof side rail 120 and the both sides of the bottom of the upper case 110 and the upper pillar 130 are not fixed, and the upper case 100 and the lower case 200 are welded and fixed after being butted, installed and fixed.

The roof side rail 120 is disposed above the rocker 220 and is detachably connected to the rocker 220. In this embodiment, the upper side rail 120 and the lower side rail 220 are fixedly coupled by a threaded connection. The lower side rail 220 is welded to the lower shell 210, and the upper side rail 120 is welded to the upper shell 110. The upper boundary beam 120 and the lower boundary beam 220 are connected and fixed through a threaded connecting piece, and the installation is convenient and rapid. The lower boundary beam 220 and the lower shell 210 as well as the upper boundary beam 120 and the upper shell 110 are fixed by welding, so that the connection strength of the lower shell 210 and the lower boundary beam 220 as well as the connection strength of the upper boundary beam 120 and the upper shell 110 are increased, and the phenomenon that the inside of the power station is exposed in the external environment due to the falling of the upper shell 110 and the lower shell 210 due to external environmental factors is avoided.

In other embodiments, the roof side rail 120 and the rocker 220 may be fixed by welding, which may enhance the connection strength between the roof side rail 120 and the rocker 220. The lower side frame 220 and the lower shell 210 may be detachably connected by a screw connector, and the upper side frame 120 and the upper shell 110 may be detachably connected by a screw connector. Connect through the detachable mode and make things convenient for the later stage to change casing or maintenance, but need seal the processing to the junction, avoid impurity such as outside rainwater, dust to get into the inside that trades the power station.

In this embodiment, as shown in fig. 5-12, the bottom surface of the roof side rail 120 and the top surface of the rocker 220 are both planar. When the upper casing 100 and the lower casing 200 are mounted in a butted state, the bottom surface of the upper side rail 120 and the top surface of the lower side rail 220 abut against each other. The bottom surface of the roof side rail 120 and the top surface of the roof side rail 220 are formed in a planar structure, so that the roof side rail 120 of the upper box 100 and the roof side rail 220 of the lower box 200 can be conveniently positioned and installed, and the connection strength between the roof side rail 120 and the roof side rail 220 can be improved.

In other embodiments, the bottom surface of the roof side rail 120 and the top surface of the rocker 220 are correspondingly stepped structures, so as to facilitate the quick positioning of the roof side rail 120 and the rocker 220 and improve the waterproof sealing performance at the connection between the roof side rail 120 and the rocker 220. Specifically, as shown in fig. 14, when the stepped structure is provided, the bottom of the stepped structure of the roof side rail 120 is lower than the top of the stepped structure of the roof side rail 220, and the inner surface of the stepped structure of the roof side rail 120 covers the outer surface of the stepped structure of the roof side rail 220. This arrangement facilitates sealing at the junction of the rocker 120 and the rocker 220 and enhances the strength of the connection.

In this embodiment, the roof side rail 120 and the rocker 220 are each hollow. The upper edge beam 120 and the lower edge beam 220 are hollow structures, which is beneficial to improving the overall strength, and have light weight, can reduce the overall weight, and have low cost. Alternatively, square hollow tubes may be used for the roof side rail 120 and the rocker side rail 220.

In other embodiments, other lightweight solid materials, such as wood or plastic, may be used for the upper and

lower sills

120, 220.

In this embodiment, the upper side member 120 is provided on the inner surface of the upper shell 110, and the lower side member 220 is provided on the inner surface of the lower shell 210. Locate inboard with roof side rail 120 and rocker 220, be convenient for the later stage other parts of installation in inner space, cover roof side rail 120 and lower shell 210 cover rocker 220 through last casing 110, improved the waterproof leakproofness of last box 100 and lower box 200 concatenation department.

As shown in fig. 6 and 11, the swapping station further includes a lower connection plate 500, the lower connection plate 500 has two connection portions, a first portion of the lower connection plate 500 is fixed between the upper sill 120 and the lower sill 220, and a second portion of the lower connection plate 500 is fixed to the lower case 210. In this embodiment, the lower connecting plate 500 is fixed between the lower side rail 220 and the upper side rail 120 and on the lower shell 210 by welding, so as to improve the connection strength between the lower side rail 220 and the lower shell 210. Of course, the lower connecting plate 500 may be fixed to the lower side frame 220 and the lower housing 210 by other means, such as by bolting.

By providing the lower connection plate 500 to connect the lower side sill 220 to the lower case 210 through the lower connection plate 500, it is possible to prevent the lower case 210 from being welded to the lower side sill 220 to damage the entire structure and strength of the lower side sill 220, so that the lower side sill 220 can be more easily connected to the lower case 210.

In other embodiments, the first portion of the lower connecting plate 500 may be fixed to only the lower side rail 220, and the lower connecting plate 500 may be detachably connected to the upper side rail 120.

When the lower connecting plate 500 is fixedly connected to the lower case 210, the outer end surface of the lower connecting plate 500 is hermetically connected to the inner side surface of the lower case 210. Of course, in other alternative embodiments, the lower end surface of the lower connection plate 500 may cover and be connected to the top of the lower housing 210. The lower connecting plate 500 and the lower shell 210 are installed in the above mode, so that gaps are prevented from being formed at the joint between the lower connecting plate 500 and the lower shell 210, rainwater and the like penetrate into the lower box body 200, and normal operation of battery replacement equipment is affected.

As shown in fig. 6 and 9-11, the power station further includes an upper connecting plate 600, one end of the upper connecting plate 600 facing the upper shell 110 is fixedly connected to the inner side surface of the upper shell 110, and the upper connecting plate 600 is fixedly connected to the upper side beam 120. The roof side rail 120 is connected to the upper case 110 by the upper connection plate 600, so that the connection strength between the roof side rail 120 and the upper case 110 is improved, the damage to the overall structure and strength of the roof side rail 120 can be avoided, and the roof side rail 120 can be more easily connected to the upper case 110.

The end surface of the upper connecting plate 600 facing one end of the upper shell 110 is matched with the shape of the inner side surface of the upper shell 110, so that the connecting strength between the upper shell 110 and the roof side rail 120 is enhanced.

In other embodiments, the skirt 111 is not disposed at the bottom of the upper casing 110, and the inner side surface of the bottom of the upper casing 110 directly covers the outer side surface of the top of the lower casing 210, so that the upper connecting plate 600 does not need to be disposed between the upper side beam 120 and the upper casing 110, only the lower connecting plate 500 needs to be disposed between the lower side beam 220 and the lower casing, and a sealing member or a sealant is disposed in a covering region between the inner side surface of the bottom of the upper casing 110 and the outer side surface of the top of the lower casing 210.

In the present embodiment, the upper housing 110, the lower housing 210, and the skirt 111 are all of a structure similar to corrugated board. The two side surfaces of the plate are respectively provided with a plurality of continuous convex and concave structures which are arranged at intervals, the convex of one side surface is correspondingly formed by the concave of the other side surface, and correspondingly, the concave of one side surface is formed by the convex of the other side surface. The raised and recessed features each extend in a vertical direction.

By providing the recess and the protrusion on the upper case 110 and the lower case 210, the guide installation of the upper case 100 and the lower case 200 is facilitated, the installation efficiency is improved, and the structural strength of the upper case 110 and the lower case 210 is increased. Simultaneously also conveniently carry out the water conservancy diversion to the rainwater, make the rainwater flow away according to predetermined water drainage tank, avoid the rainwater to permeate the inside of trading the power station, influence the normal operating of trading electrical equipment.

As shown in fig. 10, the inner surface of the upper case 110 has a plurality of first recesses 1101 arranged at intervals, and the outer surface of the upper case 110 has a plurality of fourth protrusions 1102 arranged at intervals. As shown in fig. 12, the inner side surface of the lower case 210 has a plurality of second concave portions 2102 formed by a plurality of first convex portions 2101, and the outer side surface of the lower case 210 has a plurality of first convex portions 2101 arranged at intervals and matched with the shape of the first concave portions 1101. The first recess 1101, the fourth protrusion 1102, the second recess 2102, and the first protrusion 2101 all extend in the vertical direction.

As shown in fig. 9 and 10, the outer side surface of the skirt 111 has a skirt protrusion 1112 matching with the first recess 1101 of the inner side surface of the upper housing 110, and the skirt protrusion 1112 is located in the receiving space of the first recess 1101. The inner side surface of the skirt 111 has a skirt recess 1111 fitted with the first protrusion 2101 of the outer side surface of the lower case 210, and the first protrusion 2101 is located in the receiving space of the skirt recess 1111. The skirt protrusion 1112 and the skirt recess 1111 each extend in the vertical direction.

In other alternative embodiments, the upper housing 110, the lower housing 210, and the skirt 111 may be all flat plate structures. Alternatively, the outer side of the upper housing 110 and the outer side of the lower housing 210 have recesses, and the inner sides thereof and the inner and outer sides of the skirt 111 are flat. Alternatively, the convex and concave portions on the side surfaces of the upper case 110, the lower case 210, and the skirt 111 are formed independently, and are not associated with the concave and convex portions on the other side surface thereof.

When the skirt 111 is provided at the bottom of the upper case 110, the bottom of the upper case 110 covers the outer side surface of the upper end of the skirt 111. The inner side surface of the lower end of the skirt 111 covers the outer side surface of the top of the lower case 210. By adopting the structure, rainwater can conveniently flow downwards to the lower shell 210 along the skirt edge 111 from the upper shell 110, and the rainwater is prevented from exchanging the power station between the skirt edge 111 and the upper shell 110. The parts of the upper shell 110 covering the skirt 111 and the skirt 111 covering the lower shell 210 are filled with sealant, so that the rainwater seepage-proofing effect is enhanced.

As shown in fig. 6, 10, and 11, an end surface of the lower connecting plate 500 facing one end of the lower case 210 has a plurality of second convex portions 501, and the second convex portions 501 are matched with second concave portions 2102 on an inner side surface of the lower case 210. The end surface of upper connecting plate 600 facing one end of upper case 110 has a plurality of third protruding portions 601 arranged at intervals, and third protruding portions 601 match with first recessed portions 1101 on the inner side surface of upper case 110.

The outer end faces of the upper connecting plate 600 and the lower connecting plate 500 are respectively arranged to be matched with the concave portions of the inner side faces of the upper shell 110 and the lower shell 210, so that the connection strength between the upper shell 110 and the upper edge beam 120 and between the lower shell 210 and the lower edge beam 220 are further enhanced, welding and fixing are facilitated, rainwater can be guided, the rainwater can flow away according to a preset drainage groove, and the rainwater is prevented from permeating into the inside of the battery replacement station to influence the normal operation of the battery replacement equipment.

Of course, in other alternative embodiments, the skirt 111 may not be provided, and the inner side surface of the bottom of the upper casing 110 directly covers the outer side surface of the top of the lower casing 210. When the inner side surface of the bottom of upper case 110 directly covers the outer side surface of the top of lower case 210, first concave portion 1101 of the inner side surface of upper case 110 matches first convex portion 2101 of the outer side surface of lower case 210, and first convex portion 2101 is located in the receiving space of first concave portion 1101. The part of the upper shell 110 covering the lower shell 210 is filled with sealant to enhance the rain water seepage-proofing effect.

As shown in fig. 3, the upper box 100 further has an upper column 130, the upper column 130 is fixedly connected to both ends of the upper side rail 120, and both sides of the upper shell 110 are fixedly welded to the upper columns 130 at both ends of the upper side rail 120. The lower case 200 further has a lower pillar 230, the lower pillar 230 is fixedly connected to both ends of the lower sill 220, and both sides of the lower case 210 are fixedly welded to the lower pillars 230 at both ends of the lower sill 220. The upper shell 110 and the lower shell 210 are fixed on the upper upright post 230 and the lower upright post 230 in a welding mode, so that the connection strength between the upper box body and the lower box body 200 is enhanced, and meanwhile, the sealing performance is high, and rainwater is prevented from permeating into the power station.

The utility model discloses a trade power station is not restricted to the form that fig. 1-2 show, the utility model provides a shirt rim, flexible regulation structure, upper and lower stand and upper and lower boundary beam isotructure also are applicable to and trade the power station adopting other structures or overall arrangement.

Similarly, the utility model provides a shirt rim, flexible regulation structure, upper and lower stand and upper and lower boundary beam isotructure also are applicable to the energy storage station that has the storage and charge function.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The power station is characterized by comprising an upper box body and a lower box body, wherein the upper box body comprises an upper shell and a top edge beam arranged at the bottom of the upper shell, the lower box body comprises a lower shell and a lower edge beam arranged at the top of the lower shell, and the top edge beam and the lower edge beam are fixedly connected;

the telescopic adjusting mechanism is used for adjusting the transverse distance between the bottom of the upper shell and the upper edge beam.

2. The station of claim 1, wherein the bottom of the upper housing has an outwardly reversible skirt, the skirt having an upper end rotatably connected to the inner side of the bottom of the upper housing and a lower end extending downwardly and covering the outer side of the top of the lower housing.

3. The swapping station of claim 2, wherein the bottom of the upper housing covers the outer side of the upper end of the skirt.

4. The swapping station as in claim 2, wherein a reinforcing plate is arranged on the inner surface of the skirt and is used for being matched and connected with a telescopic adjusting mechanism on the upper edge beam to adjust the turning angle of the skirt.

5. The swapping station of claim 2, wherein the skirt is hinged to the upper housing, and a seal is positioned on the upper housing above and/or below the hinge of the skirt.

6. The swapping station as in any of claims 1-5, wherein the telescoping adjustment mechanism has a telescoping piece, the telescoping piece is disposed on the top side beam, and the telescoping piece is connected to the top housing bottom or the skirt to adjust a lateral distance between the top housing bottom and the top side beam or a lateral distance between the skirt and the top side beam.

7. The power station as claimed in claim 6, wherein the telescopic member comprises a nut and a screw, the screw penetrates through the upper edge beam, one end of the screw, which extends out of the upper edge beam, is connected to the bottom of the upper housing or the inner side surface of the skirt, the other end of the screw, which extends out of the upper edge beam, is in threaded connection with the nut, the nut is fixedly connected to the upper edge beam, and the screw is rotated to drive the bottom of the upper housing or the skirt to be adjustable relative to the upper edge Liang Jianju.

8. The power station as claimed in claim 6, wherein the telescopic member comprises a push rod and an adjusting member, the push rod penetrates through the upper edge beam, one end of the push rod penetrating through the upper edge beam is connected to the bottom of the upper housing or the inner side surface of the skirt, and the adjusting member is connected to the push rod and used for driving the push rod to move in the axial direction so as to adjust the transverse distance between the bottom of the upper housing and the upper edge beam or the transverse distance between the skirt and the upper edge beam.

9. The swapping station of claim 8, wherein the push rod is a threaded rod and the adjustment member is a nut, the threaded rod being threadably engaged with the nut, and rotating the nut to move the threaded rod in the axial direction.

10. The power station as claimed in claim 9, wherein a limiting mechanism is further disposed on the top edge beam, and the limiting mechanism is configured to limit the nut to move relative to the top edge beam in the axial direction of the screw.

11. The power station as claimed in claim 10, wherein the limiting mechanism is fixedly connected with the upper edge beam, a through hole for the screw to pass through is formed in the limiting mechanism, and the nut is located between the limiting mechanism and the upper edge beam.

12. The power station as claimed in any one of claims 1 to 5, wherein the telescopic adjustment mechanism is an electric push rod, the electric push rod is arranged on the upper edge beam, and a telescopic end of the electric push rod is fixed with the bottom or the skirt of the upper shell;

13. The power station recited in claim 1 wherein the upper edge beam and the lower edge beam are fixedly connected by welding or by a threaded connection;

and/or the presence of a gas in the gas,

14. The swapping station of claim 1, wherein a bottom surface of the top edge beam abuts a top surface of the bottom edge beam.

15. The swapping station of claim 1, wherein the bottom surface of the top sill and the top surface of the bottom sill are both planar.

16. The power station as claimed in claim 1, wherein the bottom surface of the upper side beam and the bottom surface of the lower side beam are of correspondingly arranged ladder structures.

17. The swapping station of claim 16, wherein the bottom of the stair structure of the upper side beam is lower than the top of the stair structure of the lower side beam, and the inner surface of the upper side Liang Jieti structure covers the outer surface of the lower side Liang Jieti structure.

18. The power station as recited in claim 1 wherein the top edge beam is disposed on an inner side of the top housing and the bottom edge beam is disposed on an inner side of the bottom housing.

19. The power station recited in claim 1 further comprising a lower connecting plate, a first portion of the lower connecting plate being secured to the lower edge beam, a second portion of the lower connecting plate being secured to the lower housing, the lower connecting plate being removably connected to the upper edge beam;

20. The power station as recited in claim 19 wherein the lower connector plate is sealingly connected to the lower housing;

and/or the presence of a gas in the gas,

the lower connecting plate is connected with the top of the lower shell.

21. The power station as claimed in claim 1, wherein the inner side surface of the upper housing has a plurality of first recessed portions arranged at intervals, the outer side surface of the lower housing has a plurality of first raised portions arranged at intervals and matched with the first recessed portions in shape, the first raised portions and the first recessed portions both extend in the vertical direction, and the first raised portions are located in the accommodating spaces of the first recessed portions.

22. The power station of claim 21, wherein the inner side surface of the lower housing has a plurality of spaced second recesses formed by a plurality of the first protrusions, and the end surface of the lower connecting plate has a plurality of second protrusions that mate with the plurality of second recesses of the lower housing.

23. The power swapping station as claimed in any one of claims 1 to 5, further comprising an upper connecting plate, wherein one end of the upper connecting plate facing the upper shell is fixedly connected with the inner side surface of the upper shell, and the upper connecting plate is fixedly connected with the upper edge beam.

24. The power station as claimed in claim 23, wherein an end surface of the upper connecting plate facing one end of the upper housing matches a shape of an inner side surface of the upper housing.

25. The power station as claimed in claim 23, wherein an end surface of the upper connecting plate facing one end of the upper housing has a plurality of third protruding portions, an inner side surface of the upper housing has a plurality of first recessed portions arranged at intervals, and the third protruding portions are matched with the first recessed portions.