CN218505679U

CN218505679U - Electric truck battery replacement system

Info

Publication number: CN218505679U
Application number: CN202221993215.4U
Authority: CN
Inventors: 张建平; 黎明; 仇丹梁
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-02-21
Anticipated expiration: 2032-07-29

Abstract

The utility model provides an electric truck trades electric system, including charging frame and haulage vehicle, haulage vehicle is used for changing battery package unit for the quick change support that sets up on electric truck, the support body of quick change support includes supporting part and connecting portion, connecting portion are used for dismantling the bottom girder of connecting quick change support in electric truck, the supporting part forms at least one battery package position that is used for placing battery package unit, when with trading battery package, haulage vehicle takes off the battery package unit of insufficient voltage and transports to the charging frame and charges along vertical direction in following battery package position, then transport and pack into battery package position after taking off full-charge battery package unit along vertical direction from the charging frame, make battery package unit set up on the supporting part, for electric truck supplies power. The battery replacing system does not need a special battery replacing device, can complete battery replacing operation by using a carrying vehicle, has small area and good arrangement flexibility, and is particularly suitable for mining area environments.

Description

Electric truck battery replacement system

Technical Field

The specification relates to trade electric technical field, concretely relates to electric truck trades electric system.

Background

Mining trucks are special vehicles used in mining areas, and in order to adapt to the environment-friendly development concept of green water hills, mining trucks begin to use electric energy to replace traditional fuel oil. Common electric energy supplement modes of electric mining trucks mainly comprise a charging type and a power exchange type, the operation time of a mining area is dense, the capacity of a battery pack is large, the charging time is long, the mining truck needs to stop running in the charging process, the use efficiency of the mining truck is greatly reduced, a mining area charging station is established, a scheduling plan and a charging strategy of a battery pack unit are formulated, the frequency and the time of power exchange operation are arranged for the mining truck, the power exchange system of the whole mining area is in the best operation state, and the work efficiency of the mining area is improved.

Along with the change of mining position in mining area, the transportation scope of electric mining truck can change along with the mining position, and many mining areas do not have large-area flat place moreover, and the dust in mining area is big, the slay is many, and common automatic power station that trades installs automatic power change equipment, and area is big, and the structure is complicated to the service environment's of automation equipment requirement is high, uses in the region that the dirt sediment is many and breaks down easily. Therefore, a power switching system for mining trucks, which is applicable to mining area operation environments, is needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a that exists among the prior art trade electric system area big, the structure is complicated, require high technical problem to service environment, provide an electric truck trades electric system, be applicable to the limited installation site of area, simple structure requires lowly to the environment, can trade the electric service for electric truck provides nearby.

The utility model provides a following technical scheme:

an electric truck battery replacement system comprises a charging rack and a carrying vehicle, wherein the carrying vehicle is used for replacing a battery pack unit for a quick-change bracket arranged on an electric truck;

the quick-change support comprises a support body, and the support body is connected to a bottom girder of the electric truck;

the bracket body comprises a bearing part and a connecting part, wherein the first end of the connecting part is detachably connected with a bottom girder of the electric truck, the second end of the connecting part is connected with the bearing part, and the bearing part is positioned below the bottom girder and forms at least one battery pack position for placing the battery pack unit;

transport vehicle is arranged in following the battery package position of quick change support and takes off insufficient power along vertical direction battery package unit makes battery package unit and carrier part separation to with insufficient power battery package unit transports to charge on the charging frame, then follow take off full charge along vertical direction on the charging frame battery package unit transports to electric truck department and pack into along vertical direction the battery package position of quick change support, this moment, battery package unit set up in for the electric truck power supply on the carrier part.

In the above scheme, the quick-change support that bears the weight of the battery package unit is connected on electric truck's bottom girder through the connecting part, make the below of bottom girder form at least one region that is used for bearing the weight of the battery package unit, when carrying out the change operation of battery package unit, haulage vehicle installs between electric truck and charging frame, dismantle, transport battery package unit, this trades the electric system and need not to build the chassis and trades electric installation or hoist and trade the electric installation and even have the power station that trades of automation equipment, the flexibility of system arrangement is good, it is little to the requirement of area of site, because there is not complicated trade electromechanical system, be applicable to the big, the many mining area environment of slay, and can be in a flexible way will trade the regional setting of electricity in the region that is nearer from mining area position through removing the charging frame, thereby reduce the distance of charging, improve mining area operating efficiency.

In the above technical solution, preferably, two battery pack positions are located on two sides of the bottom girder along the length direction of the bottom girder.

In the scheme, the battery pack positions are arranged on the two sides of the electric truck, so that the installation space below the electric truck can be effectively utilized, the electric energy capacity is improved, and the balance of the weight configuration of the left side and the right side of the electric truck is facilitated.

In the above technical solution, preferably, a vehicle end electrical connector is disposed on an upper surface of the bearing portion of the quick-change bracket, and the vehicle end electrical connector is electrically connected to the battery end electrical connector of the battery pack unit in the vertical direction.

In the scheme, the vehicle-end electric connector and the battery-end electric connector are arranged on the upper surface of the bearing part and in the corresponding positions of the battery pack unit in a matching mode, so that the electric connection process is combined in the process that the battery pack unit vertically descends to the bearing part, and the electric connection process is efficient and simple.

In the above technical solution, preferably, the quick-change bracket further includes a floating assembly, and the vehicle-end electrical connector is floatingly mounted on the upper surface of the bearing portion through the floating assembly.

In the above scheme, the vehicle end electric connector is mounted on the floating assembly to provide the vehicle end electric connector with floating displacement in the horizontal direction, so that the vehicle end electric connector can float and move in four horizontal directions in the front, back, left and right directions in the electric connection process, and the relative position of the vehicle end electric connector and the battery end electric connector is automatically adjusted, so that stable electric connection is formed between the electric connectors.

In the above technical solution, preferably, the lower end surface of the battery pack unit is provided with a groove which is recessed upward, the shape of the groove is matched with that of the picking and placing mechanism of the transport vehicle, and the picking and placing mechanism of the transport vehicle is inserted into the groove and drives the battery pack unit to move.

In the scheme, the groove matched with the shape of the picking and placing mechanism of the transport vehicle is arranged, so that the battery pack unit is fixed in the processes of mounting, dismounting and moving the battery pack unit of the transport vehicle, and the battery pack unit is prevented from falling off from the picking and placing mechanism accidentally.

In the above technical solution, preferably, the carrying vehicle includes a horizontal moving device and a vertical moving device connected to each other, and the vertical moving device is connected to the pick-and-place mechanism;

the horizontal moving device is used for horizontally moving the battery pack unit, and the vertical moving device is used for vertically moving the battery pack unit.

In the above scheme, by arranging the horizontal moving device and the vertical moving device on the carrying vehicle, the relative positions of the battery pack unit and the bearing part can be simply and conveniently adjusted, and the battery pack unit can be conveniently installed and detached from the vertical direction.

In the above technical solution, preferably, the quick-change bracket is provided with a locking mechanism, and the battery pack unit is provided with a locking surface;

locking mechanism including rotate connect in the locking couple of support body, be equipped with on the locking couple be used for with the portion of bulldozing of battery package unit butt, the one end that the support body was kept away from to the locking couple is provided with locking portion, bulldoze the portion be used for work as the battery package unit place downwards in-process on the support body drives locking portion rotate with the locking face butt of battery package unit to it is fixed the battery package unit.

In the scheme, the rotatable locking hook is arranged, and the locking part and the pushing part are respectively arranged on the locking hook, so that when the battery pack unit is installed, the carrying vehicle drives the battery pack unit to vertically descend and press the pushing part to drive the locking hook to rotate towards the locking direction, and the locking part is abutted with the locking surface of the battery pack unit in a matched manner to complete locking; when dismantling the battery package unit, the haulage vehicle drives the vertical rise of battery package unit, and the downforce on the portion of bulldozing is relieved, and the locking couple rotates to the unblock direction, and locking portion breaks away from the locking face, accomplishes the unblock, and locking and unblock operation are convenient, equipment simple structure.

In the above technical solution, preferably, the locking mechanism further includes an unlocking lever slidably connected to the bracket body, the locking hook is provided with a first positioning locking portion, and a second positioning locking portion is provided at a position of the unlocking lever corresponding to the first positioning locking portion;

when the locking hook is in a locking state, the first positioning locking part and the second positioning locking part are in a locking matching state;

when the locking hook is in an unlocking state, the first positioning locking part and the second positioning locking part are in a separated state.

In the scheme, by arranging the unlocking rod and the first positioning locking part and the second positioning locking part which are matched with each other, when the battery pack unit is fixed by the locking hook, the first positioning locking part and the second positioning locking part are matched and locked to prevent the locking hook from rotating towards the unlocking direction; when the unlocking, through promoting the unlocking rod for first location locking portion and the separation of second location locking portion make the locking couple can follow the ascending removal of battery package unit and rotate to the unblock direction, accomplish the unblock process smoothly, form through the linkage between above-mentioned structure setting and the part and can establish the locking structure who prevents unexpected unblock.

In the above technical solution, it is preferable, and characterized in that the quick-change bracket further includes a primary guide structure, where the primary guide structure is installed at a corner of the bearing portion corresponding to the battery pack position, and is used for performing primary positioning on the battery pack unit.

In the above scheme, the primary guide structure is arranged at the corner of the bearing part, so that the horizontal guide effect is provided in the vertical installation process of the battery pack unit, the accuracy of installation operation is improved, and the operation efficiency is improved.

In the above technical solution, preferably, the primary guiding structure includes a guiding plate vertically disposed on the bearing portion, and one end of the guiding plate, which is far away from the bearing portion, is provided with a guiding surface that is matched with the outer surface of the battery pack unit for guiding;

when the battery pack unit is installed, the guide surface is in sliding contact with the outer surface of the battery pack unit so as to horizontally guide the battery pack unit to move into a battery pack position of the quick-change bracket.

In the above scheme, through setting up the spigot surface, when the battery package unit descends vertically, through sliding contact's mode, guide battery package unit horizontal migration to bear the weight of the portion directly over, accomplish the location, this location simple structure easily makes processing.

In the above technical solution, preferably, the quick-change bracket further includes a secondary guide structure, and the secondary guide structure is mounted on the upper surface of the bearing part and used for performing secondary positioning on the battery pack unit.

In the above scheme, through set up second grade guide structure on first grade guide structure's basis, when haulage vehicle descends along vertical direction installation battery package unit, carry out thick direction by first grade guide structure, carry out smart direction by second grade direction positioner again, improve the direction precision step by step to on the predetermined mounted position with the accurate guide of battery package unit to the carrier.

In the above technical solution, preferably, the quick-change holder further includes:

the secondary guide structure comprises a guide positioning taper pin and a guide positioning hole which is arranged on the battery pack unit and is matched with the guide positioning taper pin in shape;

when the battery pack unit is installed, the guiding positioning taper pin extends into the guiding positioning hole so as to guide the battery pack unit to move to the battery pack position of the quick-change support.

In the scheme, in the descending process of the battery pack unit, the guiding positioning taper pin is inserted into the guiding positioning hole which is arranged in the battery pack unit in a matched mode, secondary guiding is conveniently completed, and the guiding positioning structure is simple and easy to manufacture and process.

Compared with the prior art, the beneficial effects that can be achieved by the at least one technical scheme adopted by the embodiment of the specification at least comprise:

the battery pack unit can be flexibly assembled, disassembled and moved by the carrying vehicle through arranging the carrying vehicle between the charging frame and the electric truck, the battery replacing system does not need to be provided with a battery replacing device with a special structure, the structure is simple, the carrying vehicle is suitable for a complex operation environment, the requirements on the area and the flatness of a field are low, the miniaturization of a charging station of the electric truck is facilitated, the flexible construction of the charging station in an operation area is facilitated, and the carrying vehicle is particularly suitable for a mining operation environment with limited field area; the electric mining truck has the advantages that the weight of the truck body is large, the load tonnage is large, the electric energy consumption is large, the charging system can be arranged nearby in a mining operation area, the electric energy can be supplemented nearby by the truck, and the operation efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a perspective view of a transport vehicle for carrying out battery change operations for an electric mine card;

FIG. 2 is a perspective view of a battery swapping system;

FIG. 3 is a side view of an electric mine card with a battery pack unit installed;

fig. 4 is a perspective view of one embodiment of a quick-change holder;

fig. 5 is an enlarged, fragmentary, top view of one embodiment of a quick-change holder;

FIG. 6 is a perspective view of one embodiment of a one-sided quick-release bracket in a locked position, with the vehicle-end electrical connector not shown;

FIG. 7 is an enlarged partial perspective view of one embodiment of the quick-change holder in an unlocked condition;

fig. 8 is a perspective view of a battery pack unit;

fig. 9 is a perspective view of one embodiment of a battery pack unit locked to a quick-change cradle;

FIG. 10 is a side cross-sectional schematic view of one embodiment of a battery pack locked to a quick-change holder;

FIG. 11 is a schematic illustration in partial cross-section along a latch pin axis according to one embodiment;

FIG. 12 is a perspective view of one embodiment of the latch hook and mount assembly;

the battery pack positioning device comprises a bracket body, a bracket 1, an electric truck 100, a quick-change bracket 110, a bracket body 111, a bearing part 112, a battery pack position 113, a connecting part 114, a first end of the connecting part 115, a second end of the connecting part 116, a cross beam 117, a fixed beam 120, a vehicle end electric connector 121, a floating assembly 130, a locking mechanism 131, a first through hole 132, a locking hook 133, a locking part 134, a pushing part 136, an avoiding part 137, a torsion spring 138, a spring 140, an opening and locking rod 141, a locking pin 142, a guide part 143, a connecting block 144, a roller 150, a primary guide structure 151, a guide plate 152, a guide surface 161, a guide positioning taper pin 170, a mounting seat 171, a mounting plate 172, a limiting plate 174, a hinge shaft 175, a second through hole, a carrying vehicle 2, a carrying vehicle 211, a horizontal moving device 212, a vertical moving device 3, a charging frame 4, a battery pack unit 410, a groove 420, a battery terminal electric connector 430, and a locking surface.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways.

It should be further noted that the drawings provided in the following embodiments are only for schematically illustrating the basic idea of the present application, and the drawings only show the components related to the present application and are not drawn according to the number, shape and size of the components in actual implementation.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The electric vehicle has the advantages of zero emission, high energy utilization rate and the like, is popularized and used in various transportation operation fields, and is suitable for the environment-friendly development concept of green water mountains. The mining truck is a special vehicle used in a mining area, has high energy consumption, and can replace the traditional fuel oil with electric energy through electrified transformation, thereby reducing the emission and achieving the effects of energy conservation and environmental protection.

The common electric energy supplement mode of the electric mining truck mainly comprises a charging type and a power exchange type, the operation time of a mining area is dense, the charging time of a large-capacity battery pack is long, the mining truck needs to stop running in the charging process, the use efficiency of the mining truck is greatly reduced, a mining area charging station is established, the scheduling plan and the charging plan of a battery pack unit are formulated in a strategic manner, the frequency and the time of the power exchange operation are reasonably arranged for the mining truck, the power exchange system of the whole mining area can be in the optimal operation state, the work efficiency of the mining area is improved, and the whole energy consumption of the mining area operation is favorably reduced.

As mining operations are carried out, the mining position of a mining area changes, and at the moment, the transportation range of the electric mining truck changes along with the mining position, so that the position of a charging device for a battery pack unit needs to be changed in time to reduce the route of the electric mining truck to and fro between the charging position and the transportation area; the operation environment of the mining area is complex, time is needed for leveling the ground, and a large-scale charging device is not suitable to be established; in addition, the operation environment of the mining area is large in dust and much in slag, the common automatic battery replacement station is provided with automatic battery replacement equipment, the occupied area is large, the structure is complex, the requirement on the use environment of the automatic equipment is high, and the automatic battery replacement station is easy to break down when being used in the area with large dust and much slag.

[ example 1 ] A method for producing a polycarbonate

The embodiment discloses a battery replacement system for an electric truck, which can provide an operation of replacing a battery pack unit in a vehicle for the electric truck, and charge a replaced battery pack, wherein the electric truck is an electric mining truck. As shown in fig. 1 to 4, the electric truck replacement system includes a charging stand 3, a carrier vehicle 2, and an electric truck 1 that operates using a battery pack unit 4.

The handling vehicle 2 is used for replacing a battery pack unit 4 for a quick-change cradle 100 arranged on an electric truck 1, the quick-change cradle 100 comprising a cradle body 110, the cradle body 110 being connected to a bottom girder of the electric truck 1, wherein the cradle body 110 comprises a carrier part 111 and a connecting part 113, a first end 114 of the connecting part being detachably connected to the bottom girder of the electric truck 1, and a second end 115 of the connecting part being connected to the carrier part 111.

Through the above connection manner and through the structural design of the bearing part 111, the bearing part 111 is located below the bottom girder and forms at least one battery pack position 112 for placing the battery pack unit 4.

When the battery replacement operation is performed, the transportation vehicle 2 takes down the battery pack unit 4 with the power shortage in the vertical direction from the battery pack position 112 of the quick-change bracket 100 of the electric vehicle 1, separates the battery pack unit 4 from the carrying part 111, transfers the battery pack unit 4 with the power shortage to the charging rack 3 for charging, then takes down the battery pack unit 4 with the power shortage in the vertical direction from the charging rack 3, transfers the battery pack unit 4 with the power shortage to the electric truck 1, and loads the battery pack unit 4 into the battery pack position 112 of the quick-change bracket 100 in the vertical direction, at this time, the battery pack unit 4 is arranged on the carrying part 111 to supply power to the electric truck 1.

The following examples are discussed:

specifically, as shown in fig. 1 to 3 of an electric truck 1 for mine transportation, referring to a general fuel mining truck, an original fuel tank position is replaced with a position for installing a battery pack unit 4, and power is supplied to the electric truck through the battery pack unit 4, since the battery pack unit 4 is installed on a lower side of the electric truck 1, an operation of replacing the battery pack unit 4 can be performed from a side of the electric truck 1 using a carrying vehicle 2, such as a forklift truck, that is, the carrying vehicle 2 takes a power-deficient battery pack unit 4 from a side of the electric truck 1 and places the power-deficient battery pack unit 4 on a charging rack 3 for charging, and then takes the power-deficient battery pack unit 4 from the charging rack 3 and installs the power-deficient battery pack unit 4 on the electric truck 1.

As shown in fig. 3 and 4, the quick-change bracket 100 is mounted on a bottom frame of the electric vehicle 1, the quick-change bracket 100 includes a bracket body 110, a bearing portion 111 and a connecting portion 113 are disposed on the bracket body 110, the bearing portion 111 is composed of at least two cross beams 116, a fixing beam 117 for connecting the cross beams 116 is further disposed between the cross beams 116, a direction of the fixing beam 117 is parallel to a direction of the bottom frame of the electric vehicle 1, a battery pack position 112 is formed in an upper region between the cross beams 116 for accommodating the battery pack unit 4, and the cross beams 116 support the battery pack unit 4 from below the battery pack unit 4. The connecting portion 113 is used for connecting the bracket body 110 to the bottom member, and includes a first end 114 of the connecting portion and a second end 115 of the connecting portion, the first end 114 of the connecting portion is detachably connected to the bottom member of the electric truck 1, for example, by bolts, and the second end 115 of the connecting portion is connected to the load-bearing portion 111.

In other embodiments, the first end 114 of the connecting portion can also be connected to the bottom longeron by a fixed connection (e.g., welding), and will not be described herein.

The handling vehicle 2 is used to replace the battery pack unit 4 for the quick-change cradle 100 provided on the electric truck 1. Specifically, when the battery pack unit 4 on the electric truck 1 is removed, the transport vehicle 2 travels to the side of the electric truck 1, approaches the battery pack unit 4 in the vertical direction of the straight line from the head to the tail of the electric truck 1, takes a forklift as an example, travels from the vertical direction to approach the battery pack unit 4, holds up the battery pack unit 4 by using fork teeth, takes down the power-deficient battery pack unit 4 in the vertical direction, separates the battery pack unit 4 from the carrying part 111, transports the battery pack unit 4 to the charging rack 3, places the battery pack unit 4 on the charging station of the charging rack 3, and charges the battery pack unit; then, the fork teeth of the forklift fork the fully charged battery pack unit 4 in the charging rack 3, and transport the battery pack unit 4 to the side of the electric truck 1, put the fully charged battery pack unit 4 under the bucket of the electric truck, lower the fork teeth, so that the battery pack unit 4 is vertically loaded into the battery pack position 112 of the quick-change bracket 100 and fixed on the bearing part 111, supply power to the electric truck 1, and the battery changing operation is finished.

The quick-change support 100 bearing the battery pack unit 4 is connected to a bottom girder of the electric truck 1 through a connecting part 113, and two regions for bearing the battery pack unit 4 are formed below the bottom girder along the length direction of the bottom girder of the electric truck 1, so that the two regions positioned at two sides of the bottom girder are formed below the bottom girder, when the battery pack unit 4 is replaced, the carrying vehicle 2 is installed between the electric truck 1 and the charging frame 3, the battery pack unit 4 is detached and conveyed, the battery replacing system carries out battery replacing operation by using the carrying vehicle 2, a special battery replacing device is not required to be built, for example, a chassis battery replacing device or a lifting appliance battery replacing device is adopted, the equipment investment cost is low, the flexibility is good, a large-area installation region is not required, and the charging system is not complicated, so that the quick-change support is suitable for a mining area environment with large dust and much slag, and the battery replacing region can be flexibly arranged in a region close to a mining area through moving the charging frame 3, so that the charging distance of the electric truck 1 is reduced, and the working efficiency of the mining area is improved.

Preferably, the battery pack position 112 is located at a position between the front and rear wheels of the electric truck 1.

By providing the battery pack positions 112 on both sides of the electric truck 1, not only can the installation space below the electric truck be effectively utilized, the electric energy capacity be improved, but also the weight configuration on both sides of the electric truck can be balanced.

As shown in fig. 5, fig. 7 and fig. 8, the electric vehicle replacement system further includes a pair of a vehicle-end electric connector 120 and a battery-end electric connector 420, wherein the vehicle-end electric connector 120 is disposed on the upper surface of the carrying portion 111 of the quick-change bracket 100, in this embodiment, the vehicle-end electric connector 120 is disposed on the upper surface of the cross beam 116, i.e. on a side facing the battery pack unit 4, and the battery-end electric connector 420 is disposed below the battery pack unit 4, by such an arrangement, the vehicle-end electric connector 120 can be electrically connected with the battery-end electric connector 420 from the vertical direction, so that the electrical connection process is combined in the process of vertically descending the battery pack unit 4 to the carrying portion, the electrical connection process is simple, and the electrical connection efficiency during the installation process of the battery pack unit 4 is improved.

Preferably, as shown in fig. 5 and 7, the quick-change holder 100 is further provided with a floating assembly 121, and specifically, the floating assembly 121 is mounted on the upper surface of the bearing portion 111, that is, a surface of the bearing portion 111 facing the battery pack unit 4, and the vehicle-end electrical connector 120 is mounted on the floating assembly 121, that is, the vehicle-end electrical connector 120 is mounted on the upper surface of the bearing portion 111 through the floating assembly 121 and faces below the battery pack unit 4, and the floating assembly 121 can enable the vehicle-end electrical connector 120 to float along a horizontal plane.

By mounting the vehicle-end electrical connector 120 on the floating assembly 121, the vehicle-end electrical connector 120 is provided with a horizontal floating displacement, so that the vehicle-end electrical connector 120 can float and move in four horizontal directions, namely front, back, left and right, during the electrical connection process, and the relative position of the vehicle-end electrical connector 120 and the battery-end electrical connector 420 is automatically adjusted, thereby facilitating the formation of stable electrical connection between the electrical connectors.

The carrying vehicle 2 includes a horizontally moving device 212 and a vertically moving device 211 connected to each other, the vertically moving device being connected to the pick-and-place mechanism, the horizontally moving device being used to horizontally move the battery pack unit 4, and the vertically moving device being used to vertically move the battery pack unit 4.

Specifically, the carrier vehicle 2 is a forklift, and the forklift comprises a body, a traveling mechanism which contacts the ground, a lifting mechanism and fork tines which are connected to the body, wherein the traveling mechanism is connected to the body and drives the body to move, and the fork tines are connected to the lifting end of the lifting mechanism and driven by the lifting end to move in the vertical direction. The horizontal moving means 212 refers to a traveling mechanism, more particularly, wheels connected to a driving mechanism, the vertical moving means 211 refers to a lifting mechanism, more particularly, a gantry connected to the lifting driving mechanism, and the pick-and-place mechanism refers to tines, wherein the tines are mounted on the gantry and can move in a vertical direction on the gantry.

By providing the horizontal movement device 212 and the vertical movement device 211 on the conveying vehicle 2, the relative positions of the battery pack unit 4 and the bearing portion 111 can be adjusted, facilitating the mounting and dismounting of the battery pack unit 4 from the vertical direction.

As shown in fig. 8 and 9, the lower end surface of the battery pack unit 4 is provided with a groove 410 which is concave upwards, i.e. concave towards the direction of the upper end surface, the shape of the groove 410 matches with the shape of the picking and placing mechanism of the transport vehicle 2, the groove 410 is used for fixing the battery pack unit 4 with the picking and placing mechanism of the transport vehicle 2, and when the battery replacement operation is performed, the picking and placing mechanism of the transport vehicle 2 is inserted into the groove 410 and drives the battery pack unit 4 to move.

The lower terminal surface of battery package unit 4 is seted up flutedly, and the recess extends to the opposite side from one side of battery package unit 4 to upwards sunken in order to hold fork truck's prong, the degree of depth and the width of recess match with the size of prong, prevent that the battery package unit from droing from unexpected fork truck. When the forklift carries out the battery replacement operation, the fork teeth are inserted into the grooves to fix the battery pack unit 4 and carry out the actions of lifting, putting down and horizontally moving the battery pack unit 4.

The forklift may be a forklift driven by a driver or an automatically controlled AGV forklift.

As shown in fig. 4 and 5, the quick-change holder 100 is provided with a lock mechanism 130, and correspondingly, as shown in fig. 8, the battery pack unit 4 is provided with a lock surface, and the battery pack unit 4 is locked by abutting the lock mechanism 130 against the lock surface. Specifically, as shown in fig. 4 to 9, the locking mechanism 130 includes a locking hook 132, the locking hook 132 is rotatably connected to the side surface of the cross beam 116 of the rack body 110 through a hinge shaft and a mounting seat 150, the mounting seat includes two mounting plates 171 parallel to each other and disposed on the side surface of the cross beam 116 and a limiting plate 172 having two ends respectively connected to the corresponding mounting plates 171, the locking hook 132 is rotatably connected between the two mounting plates 171 through a hinge shaft 174, a pushing part 134 and a locking part 133 are disposed on the locking hook 132, the pushing part 134 is used for abutting against the battery pack unit 4, and a locking part 133 is disposed at one end of the locking hook 132 away from the rack body 110. A first end of the pushing portion 134 is fixedly connected to an end of the locking hook 132 away from the battery pack 4, and a second end of the pushing portion 134 faces a lower end surface of the battery pack 4 and is disposed on a descending path of the battery pack 4. When the battery pack unit 4 is mounted, in the process of placing the battery pack unit 4 downward on the bracket body 110, the lower end surface of the battery pack unit 4 pushes the pushing part 134 downward, and then the locking hook 132 is driven to rotate along the locking part 133 in the direction (direction a in fig. 10, that is, the locking direction) close to the lower end surface of the battery pack 4, and the locking part 133 gradually approaches and finally abuts against the locking surface 430 of the battery pack unit 4 to fix the battery pack unit 4. When the battery pack unit 4 is removed, the transport vehicle 2 drives the battery pack unit 4 to vertically ascend, the pressing force on the pushing portion 134 is released, the locking hooks 132 rotate in the direction (direction B in fig. 10, i.e., the unlocking direction) away from the lower end face of the battery pack 4 along the locking portions 133, the locking portions 133 disengage from the locking surfaces 430, and the locking hooks 132 abut against the limiting plates 172, thereby completing unlocking.

By arranging the rotatable locking hook 132, arranging the locking part 133 and the pushing part 134 on the locking hook 132 respectively, and arranging the pushing part 134 on a descending path of the battery pack 4, when the battery pack unit 4 is installed, the pushing part 134 follows the descending of the battery pack 4 to drive the locking hook 132 to rotate towards the locking direction, and finally the locking part 133 is matched and abutted with the locking surface 430 of the battery pack unit 4 to lock the battery pack; when the battery pack 4 is removed, the pressing force of the battery pack 4 on the pressing portion 134 is gradually released, and the lock hook 132 rotates in the unlocking direction to unlock the battery pack. The locking and unlocking operation is convenient and fast, and the equipment structure is simple.

As shown in fig. 4 to 9, the locking mechanism 130 further includes an unlocking lever 140 and a first reset member, which are slidably connected to the bracket body 110, the locking hook 132 is provided with a first positioning locking portion, and the position of the unlocking lever 140 corresponding to the first positioning locking portion is provided with a second positioning locking portion;

when the locking hook 132 is in the locking state, the first positioning locking part and the second positioning locking part are in the locking matching state;

when the locking hook 132 is in the unlocked state, the first positioning locking portion and the second positioning locking portion are in a separated state, and the locking hook 132 abuts on the limit plate 172.

Wherein, the both ends of first piece that resets are connected respectively in support body 110 and locking couple 132, and the effort that switches into the unlocking state from the locking state is provided for locking couple 132.

Specifically, the locking mechanism 130 includes an unlocking rod 140 horizontally disposed, the unlocking rod 140 is slidably connected to the bracket body 110, as shown in fig. 7, a guide member 142 may be sleeved on the unlocking rod 140, and the guide member 142 is fixed on the bearing portion 111 and is perpendicular to a bottom girder of the electric truck 1; and, a lock pin 141 is provided, the first reset member is a torsion spring 137 (as shown in fig. 12) sleeved on the hinge shaft 174, a first end of the torsion spring abuts against the mounting plate 171, and a second end of the torsion spring 137 abuts against the inner side of the locking hook 132 (i.e. the right side of the locking hook 132 in fig. 7). Meanwhile, the locking hook 132 is further provided with a first through hole 131 (as shown in fig. 11 and 12), the two mounting plates 171 are both provided with second through holes 175, and the two second through holes 175 are coaxial with the first through hole 131. When the locking hook 132 is in a locking state, that is, the locking part 133 abuts against the locking surface 430 of the battery pack unit 4, the lock pin 141 is inserted into the first through hole 131 and the second through hole 175 to achieve locking, and the locking hook 132 is prevented from rotating; or when the lock release lever 140 is pushed by an external force, the lock pin 141 is withdrawn from the first through hole 131, and the lock hook 132 is no longer restricted by the lock pin 141 and rotates in the unlocking direction until it abuts against the stopper plate 172 under the force of the elastic restoring force provided by the torsion spring.

The locking hook 132, the unlocking rod 140 and the battery pack unit 4 are linked as follows:

when the battery pack unit 4 is mounted, the battery pack unit 4 descends from above the bracket body 110, and in the descending process, the pushing portion 134 is contacted and pressed downwards, the pushing portion 134 drives the locking hook 132 to rotate in the descending process (the locking direction of the locking hook 132, which is described above, the direction a in fig. 10), and the torsion spring is gradually twisted, so that the locking portion 133 on the locking hook 132 approaches to the direction of the battery pack unit 4 and finally abuts against the locking surface 430 of the battery pack unit 4; then, the unlocking lever 140 is slid in a direction (C direction in fig. 6) in which the bottom side member faces the side of the vehicle, so that the lock pin 141 of the unlocking lever 140 is locked in cooperation with the first through hole 131 and the second through hole 175 of the locking hook 132 (as shown in fig. 11), thereby preventing the locking hook 132 from freely rotating, and thus stably locking the battery pack unit 4.

When removing the battery pack unit 4, first, the unlocking lever 140 is slid in the direction from the vehicle side to the bottom side member (direction D in fig. 6), the locking state of the locking pin 141 on the unlocking lever 140 and the first through hole 131 on the locking hook 132 is released, then, the battery pack unit 4 is lifted upward, for example, the lifting operation is performed using a forklift, the pushing portion 134 rises following the battery 200, and the locking hook 132 rotates in the unlocking direction under the urging force provided by the torsion spring, so that the locking portion 133 is disengaged from the locking surface 430 on the battery pack unit 4, the battery pack is unlocked, and finally, abuts against the stopper plate 172. The forklift can remove and transport the battery pack unit 4, and after the forklift moves the battery pack unit 4 without abutting against the unlocking lever 140, the lock pin 141 of the unlocking lever 140 is simply inserted through the second through hole 175.

By arranging the unlocking rod 140 and the first positioning locking part and the second positioning locking part which are matched with each other, when the battery pack unit is fixed by the locking hook, the first positioning locking part and the second positioning locking part are matched and locked, so that the locking hook 132 is prevented from rotating towards the unlocking direction; when unlocking, the unlocking rod 140 is pushed to separate the first positioning locking part from the second positioning locking part, so that the locking hook 132 can rotate to the unlocking direction along with the ascending movement of the battery pack unit 4, the unlocking process is smoothly completed, and a locking structure for preventing accidental unlocking can be established through the structural arrangement and the linkage between the parts.

In order to achieve the guiding of the battery pack unit in the horizontal direction during the process of placing the battery pack unit in the quick-change holder, as shown in fig. 4 to fig. 6, the quick-change holder 100 further includes a primary guiding structure 150, wherein the primary guiding structure 150 is installed at a corner of the carrying portion 111, that is, a corner of the carrying portion 111 corresponding to the battery pack position 112, and is used for performing primary positioning on the battery pack unit 4.

Specifically, the primary guiding structure 150 includes eight guiding plates 151 and guiding surfaces 152 disposed on the guiding plates 151, wherein the guiding plates 151 are vertically disposed on the bearing portion 111. A guide surface 152 is provided on one end of the guide plate 151 remote from the bearing 111 and is disposed obliquely with respect to the horizontal plane for sliding contact with the outer surface of the battery pack unit 4 to horizontally guide the movement of the battery pack unit 4 into the battery pack position 112 of the quick-change cradle 100.

Eight guide plates 151 are arranged in a group of two, each group is arranged at one end of the cross beam 116 at two sides far away from the side face of the electric truck 1, and the connecting position of the cross beam 116 and the fixed beam 117, and the two guide plates 151 in each group are perpendicular to each other. When the battery pack 4 is lowered, the guide surface 152 of the upper end of the guide plate 151 is in sliding contact with the outer corner position of the battery pack 4 to provide horizontal guide.

Through setting up deflector 151 and guiding surface 152 on it, when battery package unit 4 descends vertically, through the mode realization cooperation direction with the surface sliding contact of battery package unit, guide battery package unit 4 horizontal migration to bear weight of portion 111 directly over, accomplish the thick location in the horizontal direction, this location simple structure easily makes processing.

In order to further improve the guiding effect of the battery pack unit in the horizontal direction during the process of being placed on the quick-change bracket, on the basis of the first-stage guiding structure 150, the quick-change bracket 100 further comprises a second-stage guiding structure, and the second-stage guiding structure is mounted on the upper surface of the bearing part 111 and used for performing second-stage positioning on the battery pack unit 4.

Through setting up second grade guide structure on first-level guide structure 150's basis, when haulage vehicle 2 descends along vertical direction installation battery package unit, carry out thick direction by first-level guide structure 150, carry out smart direction by second grade direction positioner again, improve the direction precision step by step to in wrapping the position 112 with the accurate battery of guiding to load-bearing part 111 of battery package unit 4.

Specifically, as shown in fig. 6, the secondary guide structure includes a guide positioning taper pin 161, and correspondingly, as shown in fig. 8, the lower end surface of the battery pack unit 4 is provided with a guide positioning hole 461, and the guide positioning hole 461 is matched with the guide positioning taper pin 161 in shape. When the battery pack unit 4 is mounted, the guide positioning taper pin 161 extends into the guide positioning hole to guide the battery pack unit 4 to move to the battery pack position 112 of the quick-change holder 100.

In the descending process of the battery pack unit, the guiding and positioning taper pin 161 is inserted into the guiding and positioning hole 461 correspondingly arranged in the battery pack unit 4, so that secondary fine guiding is conveniently completed, and the guiding and positioning structure is simple and easy to manufacture and process.

Based on the same inventive concept, this embodiment further provides an electric truck battery replacement method, which adopts any one of the above electric truck battery replacement systems, and includes the following steps:

s1, waiting for the electric truck 1 to be parked at a battery replacement station;

the battery replacing station for parking the electric vehicle 1 needing replacing the battery is arranged, so that the carrying vehicle 2 moves between the two fixed positions, namely the battery replacing station and the charging frame 3, the route change of the carrying vehicle 2 for transporting the battery pack unit is avoided, and the battery replacing work efficiency is improved.

Step S2, the carrying vehicle 2 takes down the power-deficient battery pack unit 4 from the battery pack position 112 of the quick-change bracket 100 of the electric truck 1, separates the carrying part 111 from the battery pack unit 4, and transfers the power-deficient battery pack unit 4 to the charging rack 3 for charging;

in step S3, the transport vehicle 2 takes the fully charged battery pack unit 4 off the charging rack 3, and transfers the fully charged battery pack unit 4 to the battery pack position 112 of the quick-change bracket 100, where the battery pack unit 4 is disposed on the carrying portion 111 to supply power to the electric truck 1.

Specifically, the handling vehicle 2 includes a forklift truck, the electric truck 1 is an electric mine truck, and a quick-change bracket 100 is mounted on a bottom girder of the electric mine truck and used for mounting the battery pack unit 4 between a front wheel and a rear wheel of the electric mine truck. When the battery pack unit 4 on the electric mine card is dismounted, the forklift runs to the side of the electric vehicle 1 and is close to the battery pack unit 4, the fork extends into the groove on the lower end face of the battery pack unit 4 and supports the battery pack unit 4, the battery pack unit 4 with insufficient power is taken down along the vertical direction, the battery pack unit 4 is separated from the bearing part 111, then the forklift transports the battery pack unit 4 to the charging rack 3, and the battery pack unit 4 is placed on a charging station of the charging rack 3 for charging; subsequently, the forklift forks the fully charged battery pack unit 4 in the charging rack 3, transports the battery pack unit 4 to the side of the electric mine card, and lowers the battery pack unit 4 from the side of the electric mine card in the vertical direction to place the battery pack unit 4 on the bearing part 111, that is, the fully charged battery pack unit 4 is loaded into the battery pack position 112 to supply power to the electric mine card, and the battery replacement operation is completed.

By using the electric truck battery replacing method, the carrying vehicle 2 is used for moving between the electric truck 1 and the charging frame 3 and installing and removing the battery pack unit 4, a special battery replacing device is not required to be adopted, for example, a chassis battery replacing device or a lifting appliance battery replacing device is adopted, the whole battery replacing process is completed through the operation action of the forklift, the flexibility is good, the site adaptability is high, the battery replacing system can be arranged at a position close to mining operation by moving the charging frame, the timely battery replacing of the electric vehicle is facilitated, and the operation efficiency of a mining area is improved.

Wherein, the step of haulage vehicle 2 taking off the battery package unit 4 of insufficient power from quick change support 100 of electric truck 1 specifically includes:

the transport vehicle 2 lifts the battery pack unit 4 of the power shortage, moves the battery pack unit 4 upward away from the pressing portion 134 of the locking hook 132, and rotates the locking portion 133 of the locking hook 132 in a direction away from the locking surface 430 of the battery pack unit 4, thereby unlocking the battery pack unit 4.

The operation of lifting battery pack unit 4 through haulage vehicle 2 for locking couple 132 accomplishes the unblock operation, combines the completion with the action of lifting unblock, need not to carry out independent unblock operation, and the unblock mode is simple, and the operating efficiency is high, need not the special external power's unlocking mechanism moreover, the energy can be saved.

Between steps S1 and S2, that is, before step S2, the electric truck power swapping method further includes:

s10, the power exchange system of the electric truck 1 acquires a power exchange starting signal and executes the step S11;

through setting the power change starting signal, the carrying vehicle can be timely informed, so that the carrying vehicle enters the power change operation position in advance, and the total duration of the power change operation is shortened.

S11, the transportation vehicle 2 impacts the unlocking lever slidably connected to the support body 110, and the unlocking lever 140 drives the second positioning locking portion to disengage from the first positioning locking portion, so that the locking hook 132 is in an unlocking state.

The unlocking rod 140 is impacted by the carrying vehicle 2 to drive the second positioning locking part to be separated from the first positioning locking part, so that the locking hook can rotate towards the unlocking direction; through setting up in locking couple complex first location locking portion and second location locking portion, avoided electric vehicle to travel in-process locking mechanism's accident and opened, moreover, when needs unblock, through striking unlocking lever, combine the motion in the motion of haulage vehicle with the action that breaks away from of second location locking portion to save unblock time.

Preferably, the step S3 is followed by the step of:

and S4, the power swapping system of the electric truck 1 sends a power swapping end signal.

Through setting the power change end signal, the electric vehicle is informed of the completion of the power change operation, so that the electric vehicle is prevented from moving too early, accidents are avoided, the electric vehicle can be reminded of driving away from a parking power change position, and a power change position is given way so that a subsequent queuing vehicle can start the power change operation as early as possible.

Specifically, the step of transferring the fully charged battery pack unit 4 to the battery pack position 112 of the quick-change bracket 100 specifically includes:

the carrying vehicle 2 places the battery pack unit 4 downward, and the outer frame of the battery pack unit 4 is guided by sliding along the guide surface 152 of the guide plate 151;

the battery pack unit 4 is placed downwards by the carrier vehicle 2, and the guiding and positioning taper pin 161 arranged on the quick-change bracket 100 extends into the guiding and positioning hole 461 arranged at the bottom of the battery pack unit 4;

the battery pack unit 4 is placed into the battery pack position 112 of the quick-change holder 100 until it is fully charged, so that the battery pack unit 4 is placed on the bearing part 111.

The guide plate 151 and the guide surface 152 form a first-stage guide structure 150, the guide positioning taper pin 161 and the guide positioning hole 261 form a second-stage guide structure, when the carrying vehicle 2 descends along the vertical direction to install the battery pack unit 4, the first-stage guide structure 150 performs coarse guiding, the second-stage guide positioning device performs fine guiding, the guiding precision is improved step by step, the battery pack unit 4 is accurately guided to the preset installation position of the bearing part 111, and the precision and the efficiency for installing the battery pack unit 4 are improved.

[ example 2 ] A method for producing a polycarbonate

Embodiment 2 discloses another specific implementation of the electric truck battery replacement system, and embodiment 2 is based on embodiment 1, and the electric truck battery replacement system further includes a guide member for providing a guiding function for the unlocking lever 140, and a spring for providing a restoring function.

Specifically, as shown in fig. 7, the quick-change holder 100 further includes a guide 142 and a spring 138, the guide 142 is fixed on a side surface of the cross beam 116, wherein a guide hole is formed in the guide 142, the guide hole is used for slidably mounting the unlocking rod 140, specifically, the guide includes a straight cylinder and a connecting plate, which are connected to each other, and a C-shaped opening of the straight cylinder is far away from the connecting plate. That is, the guide hole forming the guide 142 is a C-shaped hole having a shape matching the sectional shape of the lock release lever 140, and the lock release lever 140 is inserted into the guide hole and can reciprocate along the axial direction of the guide hole. As shown in fig. 7, lock release lever 140 is fixedly connected with lock pin 141 through connection block 143, and the axis of lock pin 141 is parallel to the axis of lock release lever 140. The lock pin 141 is moved by the sliding of the lock release lever 140 in the guide hole, thereby locking or unlocking the locking hook 10. The unlocking lever 140 is perpendicular to the bottom side member of the electric truck 1. As shown in fig. 7, the spring 138 is sleeved outside the lock opening rod 140, and two ends of the spring 138 respectively abut against the connecting block 143 and the guiding element 142.

In the above structure, when the lock release lever 140 is not subjected to the external urging force, the spring 138 pushes the connection block 143, so that the lock release lever 140 slides in the first locking direction (in the direction of the bottom side member toward the vehicle side, direction C in fig. 6), so that the lock pin 141 enters the first through hole 131, and is fixed in the first through hole 131 by the elastic force of the spring 138. When the unlocking lever 140 receives an external pushing force, for example, an impact pushing force from a forklift, the unlocking lever 140 slides in a first unlocking direction (a direction toward the bottom side member along the side of the vehicle, i.e., direction D in fig. 6), the unlocking lever 140 presses the spring, the lock pin 141 exits the first through hole 131, the locking state of the locking hook 132 is released, and the locking hook 132 can rotate in a direction away from the battery pack 4 by the restoring force of the torsion spring 137, so as to unlock the battery pack 4.

The spring 138 sleeved on the unlocking rod 140 provides restoring force for the unlocking rod 140, and after the battery pack unit 4 is locked, a reset structure with compact and simple structure is provided, the lock pin 141 is fixed on the first through hole 131, the locking hook 132 is prevented from accidentally rotating, and therefore locking is kept stable and reliable.

Preferably, the end of the lock release lever 140 facing the vehicle body side of the electric truck 1 is further provided with a roller 144.

By providing roller 144 on lock release lever 140, the friction between lock release lever 140 and the forklift is reduced.

Based on the same inventive concept, the embodiment further provides an electric truck battery replacement method, the electric truck battery replacement system shown in the embodiment is adopted, in the embodiment, the carrying vehicle is a forklift, and the electric truck battery replacement method includes the following steps:

Specifically, when the battery pack unit 4 on the electric truck 1 is removed, the carrying vehicle 2 runs to the side of the electric truck 1, the forklift impacts the unlocking rod 140, the spring 137 is compressed, the locking pin 141 exits from the first through hole 131, the fork tines lift the battery pack unit 4, the power-deficient battery pack unit 4 is taken down along the vertical direction, at this time, the locking hook 132 rotates towards the unlocking direction under the action of the restoring force of the torsion spring 137, the locking part 133 leaves the locking surface 430 of the battery pack unit 4, the forklift continues to lift the battery pack unit 4 along the vertical direction to be separated from the bearing part 111, then the forklift transports the battery pack unit 4 to the charging rack 3, and the battery pack unit 4 is placed on the charging station of the charging rack 3 for charging; subsequently, the tines of the forklift lift the fully charged battery pack unit 4 from the charging rack 3, and transport the battery pack unit 4 to the side of the electric truck 1, hit the unlocking lever 140 again so that the lock pins 141 are not located in the first through holes 131 and the second through holes 175, then drop the battery pack unit 4 in the vertical direction onto the carrying portion 111, and in the process of dropping the battery pack unit 4, the pushing portion 134 is abutted and pressed down, the locking hooks 132 rotate following the dropping of the battery pack unit 4 against the elastic restoring force of the torsion springs 137, and finally the locking portions 133 abut against the locking surfaces 430, and when the transport vehicle 2 leaves, the pushing force on the unlocking lever 140 is removed, and the lock pins 141 enter the first through holes 131 and the second through holes 175 under the elastic force of the springs 137, thereby fixing the locking hooks 132, completing the locking, the power supply to the electric truck 1 by the battery pack unit 4, and the battery replacement work is finished.

The beneficial effects of the electric truck power swapping method can refer to the effect of the electric truck power swapping system in embodiment 1, and are not described herein again.

[ example 3 ] A method for producing a polycarbonate

Embodiment 3 discloses another specific implementation of an electric vehicle replacement system for an electric truck, and in embodiment 2, on the basis of embodiment 1, the abutting position of the limiting plate 172 corresponding to the locking hook 132 is further set on a support inclined surface (not shown in the figure) for surface contact with the locking hook 132, so that the contact area between the locking hook 132 and the limiting plate 172 is increased, and the contact pressure is reduced.

Specifically, the upper end of the limiting plate 172 is provided with a supporting inclined surface, the supporting inclined surface inclines towards one side of the locking hook 132, and the inclined angle is the same as the inclined angle in the vertical direction when the locking hook 132 is located at the unlocking position, so that the other side of the locking hook 132 relative to the locking portion 133 abuts against the supporting inclined surface.

Set up the support inclined plane on through limiting plate 172 for when the unblock state, locking couple 132 is more firm with the fixed of limiting plate 172.

Based on the same inventive concept, the embodiment further provides an electric truck battery replacement method, and by using the electric truck battery replacement system shown in the embodiment, specific steps of the electric truck battery replacement method may refer to the steps of the electric truck battery replacement method in the foregoing embodiment, and beneficial effects of the electric truck battery replacement method may refer to effects of the electric truck battery replacement system in the foregoing embodiment, which are not described herein again.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The electric truck battery replacement system is characterized by comprising a charging rack and a carrying vehicle, wherein the carrying vehicle is used for replacing a battery pack unit for a quick-change bracket arranged on an electric truck;

2. The electric truck battery replacement system as recited in claim 1, wherein two battery packs are located along the length of the bottom side rail and are located on each side of the bottom side rail.

3. The electric power replacing system for the electric truck as recited in claim 2, wherein a vehicle end electric connector is disposed on an upper surface of the carrying portion of the quick-change bracket, and the vehicle end electric connector is electrically connected with the battery end electric connector of the battery pack unit in a vertical direction.

4. The electric power swapping system for electric trucks of claim 3, wherein the quick-change bracket further comprises a floating assembly, and the vehicle-end electrical connector is floatingly mounted on the upper surface of the carrying part through the floating assembly.

5. The electric truck replacing system as claimed in claim 1, wherein the lower end face of the battery pack unit is provided with an upwardly concave groove, the shape of the groove matches with that of a pick-and-place mechanism of the transport vehicle, and the pick-and-place mechanism of the transport vehicle is inserted into the groove and drives the battery pack unit to move.

6. The electric truck power swapping system of claim 5, wherein the handling vehicle comprises a horizontal moving device and a vertical moving device connected to each other, the vertical moving device being connected to the pick-and-place mechanism;

7. The electric truck battery replacement system according to claim 5, wherein a locking mechanism is arranged on the quick-change bracket, and a locking surface is arranged on the battery pack unit;

8. The electric truck battery replacement system as claimed in claim 7, wherein the locking mechanism further comprises an unlocking rod slidably connected to the bracket body, the locking hook is provided with a first positioning locking part, and a second positioning locking part is provided at a position of the unlocking rod corresponding to the first positioning locking part;

9. The electric truck battery replacement system according to claim 5, wherein the quick-change bracket further comprises a primary guide structure, wherein the primary guide structure is mounted at a corner of the carrying part corresponding to a battery pack position and used for primary positioning of the battery pack unit.

10. The electric truck battery replacement system according to claim 9, wherein the primary guide structure comprises a guide plate vertically arranged on the bearing part, and a guide surface which is matched with the outer surface of the battery pack unit for guiding is arranged at one end of the guide plate away from the bearing part;

11. The electric truck battery replacement system as claimed in claim 9, wherein the quick-change bracket further comprises a secondary guide structure mounted on an upper surface of the carrying portion for secondary positioning of the battery pack unit.

12. The electric truck swapping system of claim 11, wherein the quick-change bracket further comprises: