CN117416310A

CN117416310A - Power battery combined assembly system and method

Info

Publication number: CN117416310A
Application number: CN202311354133.4A
Authority: CN
Inventors: 刘飞飞; 何伟东; 韦军; 陈辉宇; 宋婷
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-01-19

Abstract

The application relates to the technical field of automobiles, in particular to a power battery assembling system and a method. A power cell co-assembly system for assembling a vehicle body and a power cell, the power cell co-assembly system comprising: the vehicle body guide vehicle is used for conveying the vehicle body to an assembly station; the battery guide vehicle is used for conveying the power battery to the assembly station; the lifting mechanism is positioned at the assembly station and used for lifting the car body, the lifting mechanism comprises a lifting bracket, the lifting bracket is provided with a movable positioning group and a fixed positioning group, the movable positioning group can move along the length direction relative to the lifting bracket, and the fixed positioning group and the movable positioning group can form a plurality of groups of positioning combinations; the positioning and correcting mechanism is positioned at the assembly station and is used for respectively positioning the vehicle body and the power battery, and the positioning and correcting mechanism comprises a bracket, a jacking component and a positioning component, wherein the jacking component and the positioning component are installed on the bracket, and the jacking component can drive the positioning component to move along the height direction.

Description

Power battery combined assembly system and method

Technical Field

The application relates to the technical field of automobiles, in particular to a power battery assembling system and a method.

Background

At present, along with the sudden increase of the demand of domestic electric automobiles, the assembly of the power batteries is very important in the process of new energy assembly, and the precision, efficiency, personnel utilization rate, assembly flexibility and tooling system compatibility of the power batteries are all tested for the precision degree of manufacturing. In order to realize high compatibility, meet the rapid iteration of products and the expansibility and flexibility of the power battery assembly process procedure, the power battery assembly mechanism with high flexibility can be developed, island assembly is realized, and the method has a vital effect on lean production of a general assembly production line.

The production line of the existing assembly workshop is characterized in that a chassis lifting appliance is adopted for carrying a vehicle body, an AGV is adopted for carrying a power battery, a manual lifting mode is adopted for viewing by eyes, and meanwhile, the lifting and positioning processes of a battery tray and the vehicle body are realized by upgrading the AGV. And then screwing the battery standard part by adopting a manual operation tool mode, and finally screwing the torque of the battery standard part by adopting an electric gun. The conventional assembly process has some technical defects, such as: the chassis production line and the chassis lifting appliance structure occupy a lot of station operation areas, and a lot of waste is caused to factory building space; from AGV to the chassis lifting appliance of the handing-over island, the handing-over system needs to contain more equipment and has a complex structure; the lifting appliance is compatible with different vehicle width and long vehicle types, complicated adapting and positioning tools are needed, and one set of tools can be compatible with only one vehicle type, so that the limitation is large; the lifting appliance and the traditional AGV can not realize accurate stop, and the automatic assembly accurate requirement of the power battery can not be met.

Disclosure of Invention

The application provides a power battery combined assembly system and a method, which aim to improve the lifting compatibility of vehicle types with different widths and wheelbases, and improve the positioning accuracy of a vehicle body and a power battery by sharing a positioning deviation correcting mechanism with the vehicle body and the power battery.

The application provides a power battery closes dress system for assemble automobile body and power battery, power battery closes dress system includes:

the vehicle body guide vehicle is used for conveying the vehicle body to an assembly station;

the battery guide vehicle is used for conveying the power battery to the assembly station;

the lifting mechanism is positioned at the assembly station and used for lifting the car body, the lifting mechanism comprises a lifting bracket, the lifting bracket is provided with a movable positioning group and a fixed positioning group, the movable positioning group can move along the length direction relative to the lifting bracket, and the fixed positioning group and the movable positioning group can form a plurality of groups of positioning combinations;

the positioning and correcting mechanism is positioned at the assembly station and is used for positioning the vehicle body and the power battery respectively, and comprises a bracket, a jacking component and a positioning component, wherein the jacking component is installed on the bracket, and the jacking component can drive the positioning component to move along the height direction.

In one possible design, the moving positioning group includes a first driving member, a moving support block, and at least two groups of first positioning members;

the first driving piece can drive the movable supporting block and at least two groups of first positioning pieces to move along the length direction so as to be used for adjusting the positions of the movable supporting block and the at least two groups of first positioning pieces relative to the vehicle body;

at least one group of the first positioning pieces can be matched with the vehicle body.

In one possible design, each set of the first positioning members includes a positioning pin and a lifting cylinder capable of driving the positioning pin to rise and fall in a height direction.

In one possible design, the fixed positioning group comprises a fixed support block and at least three groups of second positioning pieces;

at least one set of the second positioning pieces can be matched with the vehicle body.

In one possible design, each set of the second positioning members includes a positioning pin and a lifting cylinder capable of driving the positioning pin to rise and fall in a height direction.

In one possible design, the lifting mechanism further comprises a signal control module and a valve island group, the signal control module and the valve island group being mounted to the lifting bracket;

the signal control module is used for receiving signals sent by the control system and controlling the valve island group to open the valve of the lifting cylinder corresponding to the positioning pin;

the signal control module can also receive an in-place signal sent by the lifting cylinder and feed the in-place signal back to the control system.

In one possible design, the jacking assembly includes a second drive member, a drive rod, and a jacking member;

the positioning component is connected with the jacking piece;

the second driving piece can drive the driving pull rod to move along the length direction, the driving pull rod can push the jacking piece to move along the height direction, and the jacking piece can drive the positioning assembly to move along the height direction.

In one possible design, the drive rod is provided with a drive ramp;

the jacking piece comprises a jacking column and a roller, and the roller is arranged below the jacking column and can rotate relative to the jacking column;

when the driving pull rod moves along the length direction, the roller can move along the driving inclined plane.

In one possible design, the jacking piece is further provided with a jacking sphere, and the jacking sphere is arranged above the jacking column and can rotate relative to the jacking column;

the jacking sphere can jack up the car body and the power battery respectively, so that the positioning assembly can position and rectify the car body and the power battery respectively.

In one possible design, the support comprises a column provided with a first slide rail, and the jacking column is provided with a slider mounted to the first slide rail and movable along the first slide rail.

In one possible design, the upright is further provided with a limiting portion, and the slider is located between the limiting portions to limit the lifting member from being separated from the bracket.

In one possible design, the jacking assembly further comprises a position sensor, and the driving pull rod is provided with a sensed part;

the position sensor can sense the position of the sensed part so as to judge the position of the jacking piece.

In one possible design, the positioning assembly includes a guide positioning member and a jacking cylinder;

the jacking cylinder can drive the guiding locating piece to lift along the height direction.

In one possible design, the guiding and positioning piece comprises a guiding part and a positioning and rectifying part which are connected, and the cross-sectional area of the positioning and rectifying part gradually increases towards the direction away from the guiding part.

In one possible design, the power cell assembly system further comprises a floating tightening mechanism;

the floating screwing mechanism comprises a screwing manipulator and a plurality of floating connecting rods, the plurality of floating connecting rods are arranged on a tray for placing the power battery, and fasteners are placed in the floating connecting rods;

the tightening manipulator can drive the floating connecting rod to align the fastener with the mounting holes of the vehicle body and the power battery, and drive the fastener to connect the vehicle body and the power battery.

The application also provides a power battery assembling method, which adopts the power battery assembling system, and comprises the following steps:

controlling the vehicle body to guide the vehicle-mounted vehicle body to an assembly station;

controlling a positioning and correcting mechanism to position and correct the vehicle body;

controlling a lifting mechanism to lift the vehicle body;

controlling the vehicle body guide vehicle to drive away from the assembly station;

controlling the battery to guide the vehicle-mounted power battery to the assembly station;

controlling the positioning deviation correcting mechanism to position and correct the power battery;

controlling the battery guide vehicle to drive away from the assembly station;

controlling the lifting mechanism to drop the vehicle body to a position matched with the power battery;

controlling a tightening manipulator to tighten the fastener;

controlling the vehicle body guide vehicle to drive into the assembly station, and enabling the vehicle body and the power battery to fall to the vehicle body guide vehicle;

and controlling the vehicle body guide vehicle to drive away from the assembly station.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic structural diagram of a power battery assembly system provided in the present application;

FIG. 2 is a schematic view of a lifting bracket provided herein;

FIG. 3 is a schematic diagram of a positioning and deviation rectifying mechanism provided by the present application;

FIG. 4 is a schematic diagram of a positioning and deviation rectifying mechanism provided by the present application;

FIG. 5 is a schematic view of a portion of the jacking assembly of FIG. 4;

FIG. 6 is a schematic view of a portion of the jacking assembly and positioning assembly of FIG. 4;

fig. 7 is a schematic structural diagram of the jack in fig. 4 mated with a driving rod.

Reference numerals:

1-a vehicle body guide vehicle;

2-battery guide vehicle;

3-a lifting mechanism;

31-lifting the bracket;

311-mobile positioning group;

311 a-a first driver;

311 b-moving the support block;

311 c-a first positioning member;

311c 1-locating pins;

311c 2-lifting cylinder;

312-fixed positioning group;

312 a-a fixed support block;

312 b-a second positioning member;

313-a bracket body;

313 a-a connection flange;

313 b-a second slide rail;

313 c-floor;

32-lifting a manipulator;

33-a signal control module;

34-valve island group;

4-positioning and correcting mechanism;

41-a bracket;

411-upright posts;

411 a-a first slide rail;

411 b-a limit part;

42-jacking assembly;

421-a second driver;

422-drive the tie rod;

422 a-drive ramp;

422 b-jacking block;

422b 1-plane;

422b 2-limiting block;

422 c-sensed part;

423-liftout;

423 a-jack-up column;

423a 1-sliders;

423 b-rollers;

423 c-lifting the sphere;

424-position sensor;

43-positioning assembly;

431-guiding the positioning piece;

431 a-guide;

431 b-positioning deviation correcting part;

432-jacking cylinder;

5-a floating tightening mechanism;

51-screwing the manipulator;

52-floating extension rod;

6-tray.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

Detailed Description

For a better understanding of the technical solutions of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

As shown in fig. 1 to 3, the present embodiment provides a power battery assembling system for assembling a vehicle body and a power battery, the power battery assembling system including a vehicle body guide vehicle 1, a battery guide vehicle 2, a lifting mechanism 3, a positioning deviation correcting mechanism 4, and a floating tightening mechanism 5. The car body guide car 1 is used for sending the car body to an assembly station, and the battery guide car 2 is used for sending the power battery to the assembly station. The lifting mechanism 3 is located at the assembly station, the lifting mechanism 3 is used for lifting the car body, the lifting mechanism 3 comprises a lifting bracket 31 and a lifting manipulator 32, the lifting bracket 31 can support the car body, and the lifting manipulator 32 can lift the lifting bracket 31 to realize lifting of the car body. The lifting bracket 31 is provided with a movable positioning group 311 and a fixed positioning group 312, the movable positioning group 311 can move along the length direction Y relative to the lifting bracket 31, and the fixed positioning group 312 and the movable positioning group 311 can form a plurality of groups of positioning combinations. The positioning and correcting mechanism 4 is located at the assembly station, the positioning and correcting mechanism 4 is used for respectively positioning the vehicle body and the power battery, the positioning and correcting mechanism 4 comprises a support 41, and a jacking component 42 and a positioning component 43 which are mounted on the support 41, and the jacking component 42 can drive the positioning component 43 to move along the height direction Z. The floating tightening mechanism 5 comprises a tightening manipulator 51 and a plurality of floating connecting rods 52, the plurality of floating connecting rods 52 are installed on a tray 6 for placing a power battery, fasteners are placed in the floating connecting rods 52, the tightening manipulator 51 can drive the floating connecting rods 52 to align with the fasteners and mounting holes of the vehicle body and the power battery, and the fasteners are driven to be connected with the vehicle body and the power battery.

In this embodiment, the car body guiding car 1 and the battery guiding car 2 are automatic guiding cars (AGVs), the car body guiding car 1 transports the car body to the assembly station, the car body is pre-positioned, the car body is positioned and corrected by the positioning and correcting mechanism 4, the accurate positioning of the car body is finished, the car body is lifted by the lifting mechanism 3, and the car body is separated from the car body guiding car 1, so that the car body guiding car 1 is driven away from the assembly station. The lifting mechanism 3 includes two lifting brackets 31, the two lifting brackets 31 are located at two sides of the vehicle body along the width direction X, and the distance between the two lifting brackets 31 can be adjusted by adjusting the track of the lifting manipulator 32, so that the vehicle type with different widths is compatible. The lifting bracket 31 comprises a movable positioning group 311 and a fixed positioning group 312 for supporting and positioning a vehicle body, the movable positioning group 311 can move along the length direction Y (the vehicle body wheelbase direction), and the fixed positioning group 312 and the movable positioning group 311 can form a plurality of groups of positioning combinations by adjusting the position of the movable positioning group 311, so that the vehicle type compatible with different wheelbases is realized.

The battery guide vehicle 2 conveys the power battery to an assembly station, the power battery is positioned in advance, and the power battery is positioned and corrected through the positioning and correcting mechanism 4, so that the accurate positioning of the vehicle body is finished. Meanwhile, the positioning and deviation correcting mechanism 4 can jack up the power battery, and the power battery is separated from the battery guide vehicle 2, so that the battery guide vehicle 2 is driven away from the assembly station. In the embodiment, the vehicle body and the power battery share the positioning deviation correcting mechanism 4 for accurate positioning, so that the vehicle body and the power battery are positioned at the same position in the width direction X and the length direction Y, and the requirement of accurate positioning of the power battery to the vehicle body is met. Wherein, in order to protect the power battery, prevent that the power battery from taking place to damage, the power battery is set up on tray 6 all the time in transportation, location and correction process.

The lifting manipulator 32 descends the vehicle body to a position matched with the power battery, the tightening manipulator 51 controls the floating connecting rod 52 to be aligned with the power battery and the mounting hole of the vehicle body, the tightening manipulator 51 is provided with a tightening gun, and the tightening gun controls the fastener to connect the power battery and the vehicle body. The embodiment adopts an automatic assembly process, reduces on-site operators, and improves the total assembly efficiency. The components contained in the floating tightening mechanism 5 are all existing components, the floating connecting rod 52 is installed on the tray 6 for placing the power battery, and particularly the floating connecting rod 52 at the 10 positions can be arranged on the tray 6, so that the positioning requirement of a 5-section power battery bolt floating hole is met.

And (3) driving the vehicle body guiding vehicle 1 back to the assembly station, and enabling the positioning deviation correcting mechanism 4 and the lifting mechanism 3 to drop the assembled vehicle body and power battery to the vehicle body guiding vehicle 1, and driving the vehicle body guiding vehicle 1 away from the assembly station to complete the assembly of the vehicle body and the power battery. In the embodiment, only one assembly station is used for assembling the vehicle body and the power battery, so that the occupied area is small.

As shown in fig. 2, in some embodiments, the moving positioning group 311 includes a first driving member 311a, a moving support block 311b, and at least two sets of first positioning members 311c, where the first driving member 311a can drive the moving support block 311b and the at least two sets of first positioning members 311c to move along the length direction Y for adjusting positions of the moving support block 311b and the at least two sets of first positioning members 311c relative to the vehicle body. Of the at least two sets of first positioning pieces 311c, at least one set of first positioning pieces 311c is capable of being engaged with the vehicle body.

In this embodiment, the first driving member 311a may be an air cylinder, and the lifting bracket 31 includes a bracket body 313, and the moving positioning group 311 and the fixing positioning group 312 are mounted on the bracket body 313, where the bracket body 313 is provided with a connection flange 313a, and the connection flange 313a is connected to the lifting manipulator 32. The bracket main body 313 is provided with a second sliding rail 313b and a bottom plate 313c, the bottom plate 313c is matched with the second sliding rail 313b and can move relative to the second sliding rail 313b, the movable supporting block 311b and at least two groups of first positioning pieces 311c are arranged on the bottom plate 313c, the driving end of the first driving piece 311a is connected with the bottom plate 313c, so that the first driving piece 311a can drive the bottom plate 313c to move along the second sliding rail 313b, and the movable supporting block 311b and at least two groups of first positioning pieces 311c are driven to move, so that the movable supporting block 311b and the at least two groups of first positioning pieces 311c can move to corresponding positions according to a vehicle model. The positions of the at least two groups of first positioning pieces 311c are different, and the first positioning pieces 311c adapted to the vehicle type structure can be selected according to the vehicle type. For example, one set of first positioning members 311c may be selected, or two sets of first positioning members 311c may be selected, which is not particularly limited herein.

Specifically, as shown in fig. 2, each set of first positioning pieces 311c includes a positioning pin 311c1 and a lifting cylinder 311c2, and the lifting cylinder 311c2 can drive the positioning pin 311c1 to rise and fall in the height direction Z. In this embodiment, according to the vehicle type structure information obtained by the control system, the first positioning members 311c of which group can be controlled to work, so that the lifting cylinders 311c2 of which group push the positioning pins 311c1 to lift to be matched with the vehicle body.

As shown in fig. 2, in some embodiments, the fixed positioning group 312 includes a fixed support block 312a and at least three sets of second positioning members 312b, at least one set of second positioning members 312b being capable of mating with a vehicle body.

In this embodiment, the positions of the at least three sets of second positioning members 312b are different, and the second positioning members 312b adapted to the vehicle structure can be rotated according to the vehicle type. For example, one set of the second positioning members 312b may be selected, two sets of the second positioning members 312b may be selected, three sets of the second positioning members 312b may be selected, and the embodiment is not limited herein.

Specifically, as shown in fig. 2, each set of second positioning pieces 312b includes a positioning pin 311c1 and a lifting cylinder 311c2, and the lifting cylinder 311c2 can drive the positioning pin 311c1 to rise and fall in the height direction Z. In this embodiment, according to the vehicle type structure information obtained by the control system, the second positioning members 312b of which group are controlled to work, so that the lifting cylinders 311c2 of which group push the positioning pins 311c1 to lift to be matched with the vehicle body.

In the embodiment, a plurality of groups of positioning groups are formed by mutually combining at least one positioning pin 311c1 in the movable positioning group 311 and at least one positioning pin 311c1 in the fixed positioning group 312, and different vehicle body hole sites are mutually combined according to different vehicle types by designing the plurality of groups of positioning pins 311c1, so as to meet different vehicle body positioning requirements.

In some embodiments, as shown in fig. 2, the lifting mechanism 3 further includes a signal control module 33 and a valve island group 34, the signal control module 33 and the valve island group 34 being mounted to the lifting bracket 31. The signal control module 33 is configured to receive a signal sent by the control system, control the valve island group 34 to open a valve of the lifting cylinder 311c2 corresponding to the required positioning pin 311c1, and the signal control module 33 is further configured to receive an in-place signal sent by the lifting cylinder 311c2 and feed back the in-place signal to the control system.

In this embodiment, the control system analyzes the vehicle body structure information and sends a signal to the signal control module 33, the signal control module 33 knows the moving positions of the moving support block 311b and the first positioning piece 311c according to the signal and determines which group of positioning pins 311c1 work, and the information control module 33 controls the valve island group 34 to open the valve of the lifting cylinder 311c2 of the required positioning pin 311c1, so that the lifting cylinder 311c2 pushes the positioning pin 311c1 to lift to be matched with the vehicle body, thereby realizing positioning of the vehicle body.

As shown in fig. 3 and 4, in some embodiments, the jacking assembly 42 includes a second driving member 421, a driving rod 422, and a jacking member 423, and the positioning assembly 43 is connected to the jacking member 423. The second driving member 421 can drive the driving rod 422 to move along the length direction Y, the driving rod 422 can push the lifting member 423 to move along the height direction Z, and the lifting member 423 can drive the positioning assembly 43 to move along the height direction Z.

In this embodiment, the second driving member 421 may be an air cylinder, the driving end of the second driving member 421 is connected to the driving rod 422, and the driving rod 422 is matched with the lifting member 423. After the second driving piece 421 pushes the driving pull rod 422, the driving pull rod 422 can push the lifting piece 423 to ascend, so that the lifting piece 423 can jack up the tray 6 of the vehicle body or the power battery, and meanwhile, the lifting piece 423 drives the positioning assembly 43 to ascend to position the vehicle body or the power battery.

Wherein, because the positioning and rectifying mechanism 4 can position and rectify the automobile body and the power battery respectively, then the positioning and rectifying mechanism 4 is to the automobile body accomplish the positioning and rectify the back of work, and jacking piece 423 and locating component 43 can get back to initial position for the follow-up work.

Specifically, as shown in fig. 5 and 6, the driving rod 422 is provided with a driving inclined surface 422a, the lifting member 423 includes a lifting column 423a and a roller 423b, the roller 423b is mounted below the lifting column 423a and is rotatable relative to the lifting column 423a, and when the driving rod 422 moves in the length direction Y, the roller 423b is movable along the driving inclined surface 422 a.

As shown in fig. 6 and 7, in the present embodiment, the driving rod 422 is provided with a lifting block 422b, the driving inclined surface 422a is disposed on the lifting block 422b, and after the second driving member 421 pushes the driving rod 422, the lifting block 422b moves towards the roller 423b, so that the roller 423b can rotate along the driving inclined surface 422a to push the lifting member 423 to lift. Wherein, the jacking block 422b is also provided with a plane 422b1, the plane 422b1 is connected with the driving inclined plane 422a, and when the jacking piece 423 ascends in place, the roller 423b can move to the plane 422b1 along the driving inclined plane 422a, so as to play a supporting role on the jacking piece 423. The jacking block 422b is further provided with a limiting block 422b2, and the limiting block 422b2 is located at one end, away from the driving inclined plane 422a, of the plane 422b1, so that the roller 423b can be limited from falling off the plane 422b1.

More specifically, the positioning deviation correcting mechanisms 4 are provided in two, and the two positioning deviation correcting mechanisms 4 are distributed in the width direction X. Along the length direction Y, at least two jacking blocks 422b and jacking members 423 are arranged in the jacking assembly 42, the positioning assembly 43 is close to one jacking member 423, and in the two positioning deviation correcting mechanisms 4, the two positioning assemblies 43 are diagonally arranged so as to improve positioning accuracy. In addition, the positioning deviation rectifying mechanism 4 designed in the embodiment has a simple structure and is convenient to maintain and maintain.

Further, as shown in fig. 6 and 7, the lifting member 423 is further provided with a lifting ball 423c, the lifting ball 423c is mounted above the lifting column 423a and can rotate relative to the lifting column 423a, and the lifting ball 423c can respectively lift the vehicle body and the power battery, so that the positioning assembly 43 can respectively position the deviation rectifying vehicle body and the power battery.

In this embodiment, when the positioning component 43 is respectively matched with the vehicle body and the power battery, deviation correction adjustment may occur to the positions of the vehicle body and the power battery, so that the positions of the vehicle body and the power battery are moved. In the embodiment, the lifting ball 423c supports the vehicle body and the power battery, and when the vehicle body and the power battery move, the lifting ball 423c is in rolling contact with the vehicle body and the power battery, so that friction between the lifting piece 423 and the vehicle body and friction between the lifting piece 423 and the power battery are reduced.

Further, as shown in fig. 6 and 7, the bracket 41 includes a stand 411, the stand 411 is provided with a first slide rail 411a, the lifting column 423a is provided with a slide block 423a1, and the slide block 423a1 is mounted on the first slide rail 411a and can move along the first slide rail 411 a. The upright 411 is further provided with a limiting portion 411b, and the slider 423a1 is located between the limiting portions 411b to limit the lifting member 423 from being separated from the bracket 41.

In this embodiment, the lifting column 423a is mounted on the first sliding rail 411a of the upright 411 through the sliding block 423a1, and the lifting column 423a is mounted on the upright 411 and can move along the upright 411 through the sliding fit of the sliding block 423a1 and the first sliding rail 411a, so as to realize the supporting function of the lifting column 423 a.

In order to avoid that the upright 411 limits the movement of the driving pull rod 422, the upright 411 may be disposed at a side of the driving pull rod 422, and the upright 411 is provided with a avoiding portion capable of avoiding the movement of the driving pull rod 422.

As shown in fig. 4 and 5, the jacking assembly 42 further includes a position sensor 424, the driving rod 422 is provided with a sensed portion 422c, and the position sensor 424 can sense the position of the sensed portion 422c to determine the position of the jacking piece 423.

In this embodiment, the position sensor 424 can detect the position of the sensed portion 422c during the pushing of the driving rod 422, so as to determine the positions of the lifting member 423 and the positioning assembly 43, and feed back the position information to the control system, so as to facilitate the subsequent operation of lifting the lifting member 423 and the positioning assembly 43.

As shown in fig. 6, in some embodiments, the positioning assembly 43 includes a guide positioning member 431 and a jacking cylinder 432, the jacking cylinder 432 being capable of driving the guide positioning member 431 to rise and fall in the height direction Z.

In this embodiment, before the lifting member 423 lifts the vehicle body or the power battery, the guiding and positioning member 431 is in a contracted state, and after the lifting member 423 lifts the vehicle body or the power battery, the lifting cylinder 432 pushes the guiding and positioning member 431 to lift to match with the positioning hole of (the tray 6 of) the vehicle body or the power battery, so as to position the vehicle body or the power battery.

As shown in fig. 6, the guiding positioning member 431 includes a guiding portion 431a and a positioning deviation rectifying portion 431b, which are connected, and the cross-sectional area of the positioning deviation rectifying portion 431b gradually increases in a direction away from the guiding portion 431 a. In this embodiment, the guide portion 431a can perform a guiding function on the guide positioning member 431, so that the guide positioning member 431 is easily inserted into a positioning hole of (the tray 6 of) the vehicle body or the power battery. Along with the rising of the guiding locating piece 431, the locating deviation correcting part 431b gradually enters the locating hole, and the position of the vehicle body or the power battery is adjusted by pushing the side wall of the locating hole, so that the accurate locating requirement of the vehicle body and the power battery is realized. The outer surface of the positioning deviation correcting portion 431b may be an inclined surface or an arc surface.

The embodiment also provides a power battery assembling method, which adopts the power battery assembling system, and comprises the following steps: controlling the vehicle body guide vehicle 1 to carry the vehicle body to an assembly station; controlling the positioning deviation correcting mechanism 4 to position the deviation correcting vehicle body; controlling a lifting mechanism 3 to lift the vehicle body; controlling the vehicle body guide vehicle 1 to drive away from the assembly station; controlling the battery guide vehicle 2 to carry the power battery to an assembly station; controlling the positioning deviation correcting mechanism 4 to position the deviation correcting power battery; controlling the battery guide vehicle 2 to drive away from the assembly station; controlling the lifting mechanism 3 to drop the vehicle body to a position matched with the power battery; controlling the tightening manipulator 51 to tighten the fastener; controlling the car body guiding car 1 to drive into the assembly station, and enabling the car body and the power battery to fall to the car body guiding car 1; and controlling the car body guide car 1 to drive away from the assembly station.

In this embodiment, the carrier guide car transports the car body to the assembly station, and the pre-positioning of the car body is completed, and the car body is positioned and corrected by the positioning and correcting mechanism 4, and the accurate positioning of the car body is completed, and then the car body is lifted by the lifting mechanism 3, and the car body is separated from the car body guide car 1, so that the car body guide car 1 is driven away from the assembly station. The battery guide vehicle 2 conveys the power battery to an assembly station, the power battery is positioned in advance, and the power battery is positioned and corrected through the positioning and correcting mechanism 4, so that the accurate positioning of the vehicle body is finished. Meanwhile, the positioning and deviation correcting mechanism 4 can jack up the power battery, and the power battery is separated from the battery guide vehicle 2, so that the battery guide vehicle 2 is driven away from the assembly station. The lifting manipulator 32 descends the vehicle body to a position matched with the power battery, the screwing manipulator 51 controls the floating connecting rod 52 to be aligned with the mounting holes of the power battery and the vehicle body, and the fastening piece is controlled to connect the power battery and the vehicle body. And (3) driving the vehicle body guiding vehicle 1 back to the assembly station, and enabling the positioning deviation correcting mechanism 4 and the lifting mechanism 3 to drop the assembled vehicle body and power battery to the vehicle body guiding vehicle 1, and driving the vehicle body guiding vehicle 1 away from the assembly station to complete the assembly of the vehicle body and the power battery.

According to the embodiment, the vehicle body and the power battery are loaded to an assembly station through the AGV to realize the pre-positioning of the vehicle body and the power battery, and the positioning and deviation correcting mechanism 4 is used for respectively positioning and correcting the stop positions of the vehicle body and the power battery, so that the assembly precision of the vehicle body and the power battery is ensured; the process mode of the traditional combined assembly line is broken through, only one assembly station is occupied, and the automatic working processes of positioning, combined assembly and fixing of the vehicle body and the power battery are realized, so that the integration level is high, and the positioning accuracy is high.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A power cell assembly system for assembling a vehicle body and a power cell, the power cell assembly system comprising:

2. The power cell assembly system of claim 1, wherein the mobile positioning group comprises a first drive member, a mobile support block, and at least two groups of first positioning members;

3. The power cell assembly system of claim 2, wherein each set of the first positioning members includes a positioning pin and a lifting cylinder capable of driving the positioning pin to rise and fall in a height direction.

4. The power cell assembly system of claim 1, wherein the fixed positioning group comprises a fixed support block and at least three sets of second positioning members;

5. The power cell assembly system of claim 4, wherein each set of the second positioning members includes a positioning pin and a lifting cylinder capable of driving the positioning pin to rise and fall in a height direction.

6. The power cell assembly system of claim 3 or 5, wherein the lifting mechanism further comprises a signal control module and a valve island group, the signal control module and the valve island group being mounted to the lifting bracket;

7. The power cell assembly system of claim 1, wherein the jacking assembly comprises a second drive member, a drive tie rod, and a jacking member;

the positioning component is connected with the jacking piece;

8. The power cell assembly system of claim 7, wherein the drive tie rod is provided with a drive ramp;

9. The power cell assembly system of claim 8, wherein the jacking member is further provided with a jacking sphere mounted above the jacking column and rotatable relative thereto;

10. The power cell assembly system of claim 8, wherein the bracket comprises a post provided with a first slide rail, and the jacking post is provided with a slider mounted to and movable along the first slide rail.

11. The power cell assembly system of claim 10, wherein the post is further provided with a stop portion, the slider being positioned between the stop portions to limit the lifting member from being disengaged from the bracket.

12. The power cell assembly system of claim 7, wherein the jacking assembly further comprises a position sensor, the drive tie rod being provided with a sensed portion;

13. The power cell assembly system of claim 1, wherein the positioning assembly comprises a guide positioning member and a jacking cylinder;

14. The power cell assembly system of claim 13, wherein the guide positioning member comprises a guide portion and a positioning deviation rectifying portion connected, the cross-sectional area of the positioning deviation rectifying portion gradually increasing in a direction away from the guide portion.

15. The power cell assembly system of claim 1, further comprising a floating tightening mechanism;

16. A power cell assembling method, characterized in that the power cell assembling system according to any one of claims 1 to 15 is employed, comprising:

controlling a lifting mechanism to lift the vehicle body;

controlling the battery guide vehicle to drive away from the assembly station;

controlling a tightening manipulator to tighten the fastener;