CN115472984A

CN115472984A - Dynamic assembling system and dynamic assembling method for power battery

Info

Publication number: CN115472984A
Application number: CN202210780051.5A
Authority: CN
Inventors: 江桦锐; 吴磊; 林懿; 王腾; 宁森洪; 刘国忠; 姚志辉; 许勇; 马圣凯; 陈绍雄; 周静; 罗永明; 李保蓉; 樊俊晓
Original assignee: Shenzhen Hymson Laser Intelligent Equipment Co Ltd
Current assignee: Shenzhen Hymson Laser Intelligent Equipment Co Ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-12-13

Abstract

The invention discloses a dynamic assembly system and a dynamic assembly method for a power battery, wherein the assembly system comprises a main conveying line, a shell entering conveying line and a welding conveying line, shell entering sections which are parallel to each other exist between the main conveying line and the shell entering conveying line, and a transport carrier and a shell entering tool move in the same direction at opposite positions and at the same speed when entering the shell entering sections; the main conveying line and the welding conveying line are parallel to each other, and the transport carrier and the welding tool move oppositely and move in the same speed and the same direction when entering the welding section. The transportation carrier keeps the same speed with the shell entering tool when in the shell entering section, so that the shell entering tool and the battery cell are relatively static, and the shell entering action is conveniently executed; transport carrier also keeps with fast at welding section and welding frock simultaneously, then battery and welding frock keep with fast, also convenient clamp position, go up the visor, guarantee welding goes on smoothly, and electric core all keeps the motion state when going into shell and welding, and whole production line is in the developments, and processing circulation efficiency is higher.

Description

Dynamic assembling system and dynamic assembling method for power battery

Technical Field

The invention relates to the technical field of lithium battery processing production, in particular to a dynamic assembly system and a dynamic assembly method for a power battery.

Background

The lithium ion battery is a field which is relatively hot in recent years, and the processing technology and the processing equipment of the lithium ion battery are continuously updated, so that the quality of the lithium ion battery which is processed and produced at present is continuously improved. Taking a square laminated battery as an example, a plurality of working procedures are required to be carried out during processing, particularly, in the assembly stage, an AB two-piece battery cell needs to be fixedly welded on a top cover after core combination, then an aluminum shell is sleeved in the top cover to complete shell entering and press mounting, and finally the top cover and the aluminum shell are welded together to complete the assembly of the whole battery.

A plurality of related schemes are provided for the case entering, press mounting and top cover welding in the prior art, such as a common case entering machine, a common top cover welding machine and the like, most of the schemes are independent stations and devices, after the battery related accessories are conveyed to the case entering station through a manipulator or manually, an electric core is jacked into an aluminum case, or the aluminum case is sleeved into the electric core, after the case entering is completed, the battery is transferred to a welding station through the manipulator or manually, after the battery is compressed and fixed, a welding head welds along a welding path. And finally, blanking to obtain the square battery which is completely assembled.

Although the shell entering machine and the welding machine on the market have various functions, the shell entering machine and the welding machine are basically carried out according to the principle, namely, when the shell entering machine and the welding machine are carried out, the jig for loading the battery core or the battery is in a static state, the jig needs to be transported and moved after respective operation is finished, even different jigs need to be replaced, the whole process is complex, and the production period is long.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a dynamic assembly system and a dynamic assembly method for a power battery.

The invention adopts the technical scheme that the dynamic assembly system of the power battery comprises,

the main conveying line is provided with a transport carrier, and the transport carrier is driven to move along the main conveying line;

the shell entering conveying line is provided with a shell entering tool, an aluminum shell is fixed in the shell entering tool, and the shell entering tool is driven to move along the shell entering conveying line;

the welding conveying line is provided with a welding tool, and the welding tool is driven to move along the welding conveying line;

the main conveying line and the shell entering conveying line are provided with shell entering sections which are parallel to each other, and the transportation carrier and the shell entering tool move oppositely at the same speed and in the same direction when entering the shell entering sections; the main conveying line and the welding conveying line are parallel to each other, and the transport carrier and the welding tool move oppositely and move in the same speed and the same direction when entering the welding section.

Preferably, the shell entering tool comprises:

the battery cell clamping and aligning mechanism is used for clamping a battery cell;

the aluminum shell clamping and aligning mechanism is used for clamping the aluminum shell and aligning the aluminum shell with the battery cell;

the driving mechanism drives the electric core clamping and aligning mechanism and the aluminum shell clamping and aligning mechanism to synchronously execute clamping actions;

the guide mechanism is used for guiding the electric core clamping and aligning mechanism and the aluminum shell clamping and aligning mechanism to slide so as to drive the electric core and the aluminum shell to approach to each other oppositely;

and the shell feeding mechanism is used for taking the aluminum shell and sleeving the aluminum shell on the battery cell.

Preferably, the guiding mechanism comprises a fixed support and a movable support, the movable support is slidably arranged on the fixed support in the direction from the aluminum casing clamping and aligning mechanism to the electric core clamping and aligning mechanism, and the fixed support is slidably constrained on the casing conveying line;

the shell entering mechanism is fixed on the fixed support;

the electric core clamping and aligning mechanism, the aluminum shell clamping and aligning mechanism and the driving mechanism are arranged on the movable support.

Preferably, the movable support synchronously drives the aluminum shell clamping and aligning mechanism to slide, the guide mechanism further comprises a first guide assembly connected with the battery cell clamping and aligning mechanism and a second guide assembly connected with the aluminum shell clamping and aligning mechanism, and the first guide assembly and the second guide assembly are in sliding connection and used for matching the battery cell and the aluminum shell to be close to each other.

Preferably, a case entering guide rail is arranged on the case entering conveying line, the case entering guide rail comprises a first horizontal section, a second horizontal section and a first transition section connected between the first horizontal section and the second horizontal section, and the horizontal height of the first horizontal section is higher than that of the second horizontal section;

the shell entering tool comprises a shell entering pulley arranged on the shell entering guide rail, the shell entering pulley is connected with the movable support, and the battery cell is located below the shell entering conveying line when entering the shell entering section and is sent into the aluminum shell in the second horizontal section.

Preferably, the first transition section is in a step shape, the first transition section includes a first downward inclined section, a third horizontal section and a second downward inclined section, which are sequentially connected, the aluminum shell and the battery cell are aligned vertically in the first downward inclined section, the battery cell clamping and aligning mechanism and the aluminum shell clamping and aligning mechanism simultaneously clamp and position the aluminum shell and the battery cell in the third horizontal section, and the battery cell is sleeved with the aluminum shell in the second downward inclined section.

Preferably, the welding tool includes:

a protective cover is arranged on the base plate,

and the lifting motor enables the protective cover and the top cover on the battery cell to be close to each other, and the protective cover is used for covering a non-welding area on the top cover.

Preferably, the welding tool further comprises a bearing claw, the lifting motor is connected with the bearing claw, and when the lifting motor drives the bearing claw to ascend, the bearing claw supports the battery cell until the battery cell is tightly supported by the protective cover.

Preferably, the welding frock includes fixed frame and movable frame, fixed frame slide spacing in on the welding conveyer line, movable frame sliding connection in on the fixed frame, and work as the movable frame is to being close to when the direction of electric core produced the slip, the bearing claw inserted the below of electric core.

Preferably, the fixed frame is slidably constrained on the welding conveying line, the welding conveying line is further provided with a welding guide rail, the movable frame is provided with a guide wheel, the guide wheel is in rolling fit with the welding guide rail, the welding guide rail comprises a first welding horizontal section, a second welding horizontal section and a first welding inclined section which is connected with the first welding horizontal section and the second welding horizontal section, and the movable frame slides close to the battery core in the first welding inclined section.

Preferably, the press mounting device further comprises a press mounting conveying line and a press mounting tool, wherein a clamping tool is arranged on the press mounting conveying line, the clamping tool slides on the press mounting conveying line in a driven manner, press mounting sections which are parallel to each other are arranged between the press mounting conveying line and the main conveying line, and the transport carrier and the clamping tool move oppositely and at the same speed and in the same direction when entering the press mounting sections.

Preferably, the press-fitting tool comprises a synchronous driving piece and a press-fitting piece, the press-fitting piece is provided with a press-fitting surface for press-fitting the aluminum shell, and the synchronous driving piece is used for driving the press-fitting piece to move so that the press-fitting surface moves at the conveying speed of the transport carrier; and

and the lifting assembly is used for driving the synchronous assembly to reciprocate along the direction vertical to the processing speed.

Preferably, the clamping tool includes:

the first clamping assembly comprises a first driving piece and a first clamping piece, and the first driving piece is used for driving the first clamping piece to open and close along a first linear direction;

the second clamping assembly comprises a second driving piece and a second clamping piece, and the second driving piece is connected with the first clamping piece and used for driving the second clamping piece to open and close along a second linear direction perpendicular to the first linear direction;

and the third clamping component comprises a third driving part and a third clamping part, the third driving part is connected with the second clamping part and is used for driving the third clamping part to open and close along a third linear direction, and the third linear direction, the first linear direction and the second linear direction are mutually vertical.

Preferably, the main conveying line, the shell entering conveying line, the welding conveying line and the press-fitting conveying line are all magnetic drive annular lines, each magnetic drive annular line comprises a magnetic drive stator, a magnetic drive sub and an annular guide rail, and the magnetic drive sub is connected below the annular guide rail in a sliding mode.

As a second object of the present invention, the present invention further provides a dynamic assembly method, applied to a dynamic assembly system of a power battery, where the assembly system includes a main conveyor line, a case-entering conveyor line and a welding conveyor line, and the dynamic assembly method includes the following steps:

the main conveying line conveys the transport carrier to a shell entering section on one side of the shell entering conveying line at a shell entering machining speed, the shell entering conveying line conveys the shell entering tool to a position opposite to the transport carrier at the shell entering machining speed, and the shell entering tool performs shell entering action on the shell entering section;

the main conveying line conveys the transport carrier to a welding section on one side of the welding conveying line at the welding processing speed, the welding conveying line conveys the welding tool to the position opposite to the transport carrier at the welding processing speed, and the welding tool performs welding action on the welding section.

Preferably, after completing the shell entering action, the method further comprises: the main conveying line conveys the transport carrier to a press-fitting section on one side of the press-fitting conveying line at a press-fitting speed, the press-fitting conveying line conveys a clamping tool to a position opposite to the transport carrier at the press-fitting speed, and the clamping tool clamps the battery cell at the press-fitting section;

and the press-fitting tool drives the press-fitting surface to move at the press-fitting machining speed and drives the press-fitting surface to press-fit the aluminum shell during the period that the clamping tool keeps a clamping state.

Compared with the prior art, the invention has the following beneficial effects:

1. the transportation carrier is circulated on the main conveying line all the time, and does not need to be stopped when processing procedures such as shell entering, welding and the like are executed, so that a dynamic processing mode is ensured, the overall production efficiency is greatly improved, the overall rotation is smooth and ordered, and the control problems of various stopping, starting and matching caused by intermittent stopping are reduced;

2. the shell entering tool achieves lifting in the vertical direction by using the shell entering guide rail, so that sleeving and separation between the shell entering tool and the electric core are completed, shell entering operation is performed at the same speed, the whole process is smooth and natural, an additional jacking device does not need to be arranged on the shell entering tool, the weight and the cost of the structure are reduced, the shell entering tool is also circulated on a shell entering conveying line, the effect of dynamic synchronization with the electric core is achieved, and the shell entering efficiency is extremely high;

3. the whole mechanism of the shell entering tool is ingenious in design, the driving mechanism can be used for synchronously driving the electric core clamping and aligning mechanism and the aluminum shell clamping and aligning mechanism to perform clamping actions, a power source can be saved, the electric core and the aluminum shell can be aligned in the vertical direction, and the precision of subsequent shell entering is guaranteed; the cell clamping and aligning mechanism and the aluminum shell clamping and aligning mechanism can be close to and far away from each other in the vertical direction, so that the cell and the aluminum shell are initially placed in the shell in a limited and constrained state, and the shell placing quality is ensured;

4. the protective cover arranged on the welding tool can protect the top cover during welding, so that adverse effects on the battery caused by welding are reduced; the whole battery can be clamped by matching with the bearing claw and the lifting motor, so that the welding quality is favorably ensured, the bearing claw supports the whole battery from the transport carrier, the influence of power transmission between the battery and the transport carrier is not generated at the moment, namely, the transportation of the battery completely depends on the advancing of the welding tool, so that when the welding head mechanism performs welding, only the movement between a welding track and the welding tool needs to be controlled to keep synchronous, the movement speed of the transport carrier does not need to be considered, the control difficulty during welding is greatly simplified, and the welding quality is favorably improved;

5. the welding head mechanism during welding adopts a laser flight welding technology, and can complete welding by matching with the motion state of the battery cell on the premise that the welding head mechanism is fixed;

6. the press-fitting tool and the clamping tool are matched to complete press-fitting action, namely assembly between the aluminum shell and the battery cell is decomposed into two steps of front-to-back connection, the press-fitting tool comprises a shell entering part and a press-fitting part, accurate positioning and pre-shell entering are formed between the aluminum shell and the battery cell in the shell entering process of the previous step, the clamping tool of the next step enables the aluminum shell and the battery cell to be kept in a compression state in the whole process, the press-fitting tool drives a press-fitting part to move by using a synchronous driving part, the dynamic press-fitting effect of the aluminum shell is realized, friction on an aluminum shell body can be reduced, normal circulation of a transport carrier can be guaranteed on the premise of no shutdown, and the production efficiency of the whole production line is improved;

7. the main conveying line, the shell conveying line, the welding conveying line and the press-fitting conveying line are all magnetic driving annular lines, the whole conveying is stable, the circulating rotation speed is controllable, different driving speeds can be achieved in different areas, different driving objects can be independently controlled, the multifunctional circulation requirement is achieved, and the elastic processing expectation is met.

Drawings

The invention is described in detail below with reference to examples and figures, in which:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the in-shell conveyor line;

FIG. 3 is a schematic structural view of a case entering tool and a case entering guide rail;

FIG. 4 is an isometric view of the case entering tool;

FIG. 5 is an axial view of an elevation of the case entering tool;

FIG. 6 is a schematic view of a weld transfer line configuration;

FIG. 7 is a schematic structural view between the welding tool and the welding guide rail;

FIG. 8 is an isometric view of a welding fixture and a welding guide rail;

fig. 9 is a schematic view showing the overall structure of the press-fitting conveying line;

fig. 10 is a schematic view of a part of the structure of the press-fitting conveying line;

fig. 11 is a schematic structural view of the clamping tool.

10. A main conveyor line; 11. a transport vehicle; 12. a top cover; 13. an aluminum shell; 14. an electric core;

20. a shell conveying line; 201. a case entering guide rail; 202. a first horizontal segment; 203. a second horizontal segment; 204. a first transition section; 2041. a first downward sloping section; 2042. a third horizontal segment; 2043. a second downward sloping section; 205. a second transition section; 21. entering a shell tool; 22. the battery cell clamping and aligning mechanism; 23. an aluminum shell clamping and aligning mechanism; 24. a drive mechanism; 25. a guide mechanism; 251. fixing a bracket; 252. a movable support; 253. a first guide assembly; 254. a second guide assembly; 26. a shell entering mechanism; 261. a case-entering motor; 262. a suction nozzle; 27. a pulley entering the shell; 28. a sleeve; 29. a pull rod; 291. a support wheel;

30. pressing and conveying lines; 31. pressing and mounting a tool; 32. clamping the tool; 321. a jacking motor; 322. a mounting frame; 33. a synchronous drive; 34. pressing and assembling; 35. a lifting assembly; 36. a first clamping assembly; 361. a first driving member; 362. a first clamping member; 37. a second clamping assembly; 371. a second driving member; 372. a second clamping member; 38. a third clamping assembly; 381. a third driving member; 382. a third clamping member; 39. turning over a motor;

40. welding the conveying line; 41. welding a tool; 42. a protective cover; 43. a lifting motor; 44. a supporting claw; 45. a fixing frame; 46. a movable frame; 47. welding the guide rail; 471. a first welding horizontal segment; 472. a second welding horizontal segment; 473. a first welded angled section; 48. a welding head mechanism;

50. entering a shell section; 51. a press mounting section; 52. welding a section; 53. a battery.

Detailed Description

The lithium battery processing needs a plurality of procedures in the assembly stage, the invention mainly describes the main processes of feeding, core combining, shell entering, press mounting, prewelding, welding and the like of the lithium battery from the battery core and the top cover, and mainly aims at solving the problems that the lithium battery needs to be shut down and transported for many times when going through the procedures in the prior art.

A dynamic power cell assembly system, in one embodiment, as shown in fig. 1, includes a main conveyor line 10, a case-entering conveyor line 20, and a welding conveyor line 40.

As shown in fig. 1, a transport carrier 11 is arranged on a main conveyor line 10, and the transport carrier 11 is driven to move along the main conveyor line 10; a shell entering tool 21 is arranged on the shell entering conveying line 20, an aluminum shell 13 is fixed in the shell entering tool 21, and the shell entering tool 21 is driven to move along the shell entering conveying line 20; as shown in fig. 6, a welding tool 41 is disposed on the welding conveying line 40, and the welding tool 41 is driven to move along the welding conveying line 40.

As shown in fig. 1, a case entering section 50 parallel to each other exists between the main conveyor line 10 and the case entering conveyor line 20, and the transportation vehicles 11 and the case entering tools 21 move in the case entering section 50 in opposite positions and at the same speed and the same direction; the main conveying line 10 and the welding conveying line 40 are provided with mutually parallel welding sections 52, and the transport carrier 11 and the welding tool 41 move oppositely and move in the same speed and direction when entering the welding sections 52.

In the case entering section 50, the speed and the moving direction between the electric core 14 fixed in the transport carrier 11 and the case entering tool 21 are the same, so that a relatively static state is formed between the two, and at this time, the case entering tool 21 performs a case entering action on the aluminum case 13 and the electric core 14, so that the influence of the constant movement of the transport carrier 11 is avoided, the aluminum case 13 and the electric core 14 can be smoothly sleeved, and the two parts are not seriously worn. Similarly, in the welding section 52, the battery 53 which is fixed in distance and the welding tool 41 are transported at the same speed and in the same moving direction, so that a relatively static state is formed between the battery 53 and the welding tool 41, and at the moment, the welding tool 41 clamps and positions the battery 53, so that the welding operation of the welding head mechanism 48 is facilitated, and the welding operation is not influenced by the constant movement of the transport carrier 11.

In one embodiment, as shown in fig. 1 to 5, the case entering tool 21 includes a cell clamping and aligning mechanism 22, configured to clamp the cell 14; the aluminum shell clamping and aligning mechanism 23 is used for clamping the aluminum shell 13 and aligning the aluminum shell 13 with the battery cell 14; the driving mechanism 24 is used for driving the electric core clamping and aligning mechanism 22 and the aluminum shell clamping and aligning mechanism 23 to synchronously execute clamping actions; the guide mechanism 25 is used for guiding the cell clamping and aligning mechanism 22 and the aluminum shell clamping and aligning mechanism 23 to slide so as to drive the cell 14 and the aluminum shell 13 to approach each other; and the shell entering mechanism 26 is used for taking the aluminum shell 13 and sleeving the aluminum shell on the battery core 14.

The guide mechanism 25 comprises a fixed support 251 and a movable support 252, the movable support 252 is slidably disposed on the fixed support 251 in a direction from the aluminum casing clamping and aligning mechanism 23 to the battery core clamping and aligning mechanism 22, and the fixed support 251 is slidably constrained on the casing conveying line 20; the shell entering mechanism 26 is fixed on the fixed bracket 251; the electric core clamping and aligning mechanism 22, the aluminum shell clamping and aligning mechanism 23 and the driving mechanism 24 are arranged on the movable support 252.

The movable support 252 synchronously drives the aluminum casing clamping and aligning mechanism 23 to slide, the guide mechanism 25 further includes a first guide component 253 connected to the battery cell clamping and aligning mechanism 22 and a second guide component 254 connected to the aluminum casing clamping and aligning mechanism 23, and the first guide component 253 and the second guide component 254 are slidably connected to cooperate with the battery cell 14 and the aluminum casing 13 to approach each other.

Therefore, after the aluminum shell clamping and aligning mechanism 23 and the cell clamping and aligning mechanism 22 respectively clamp the aluminum shell 13 and the cell 14 in a centering manner, the aluminum shell 13 is located right above the cell 14, and then the movable support 252 synchronously drives the aluminum shell clamping and aligning mechanism 23 to slide downwards, while the cell clamping and aligning mechanism 22 keeps a clamping state and is still, so that the aluminum shell 13 and the cell 14 are sleeved, and a shell entering action is completed.

In one embodiment, the lifting driving mechanism 24 of the movable support 252 of the shell entering tool 21 is an air cylinder or a motor fixed on the fixed support 251.

In another embodiment, as shown in fig. 1 to 5, the in-shell conveying line 20 is a magnetic drive circular line, which includes a magnetic drive stator, and a circular in-shell guide rail 201, where the in-shell guide rail 201 includes a first horizontal segment 202, a second horizontal segment 203, and a first transition segment 204 connecting between the first horizontal segment 202 and the second horizontal segment 203, and the first horizontal segment 202 is higher in level than the second horizontal segment 203; the case entering tool 21 comprises a case entering pulley 27 installed on the case entering guide rail 201, the case entering pulley 27 is connected with the movable support 252, when the battery cell 14 enters the case entering section 50, the battery cell 14 is located below the case entering conveying line 20, and the battery cell 14 is conveyed into the aluminum case 13 in the second horizontal section 203.

The first transition section 204 is in a step shape, the first transition section 204 includes a first downward inclined section 2041, a third horizontal section 2042, and a second downward inclined section 2043, which are sequentially connected, the aluminum shell 13 and the battery cell 14 are aligned vertically in the first downward inclined section 2041, the battery cell clamping and aligning mechanism 22 and the aluminum shell clamping and aligning mechanism 23 simultaneously clamp and position the aluminum shell 13 and the battery cell 14 in the third horizontal section 2042, and the aluminum shell 13 is sleeved into the battery cell 14 in the second downward inclined section 2043.

In one embodiment, the fixed bracket 251 is fixedly connected with the magnetic driver, the movable bracket 252 is vertically and slidably connected to the fixed bracket 251, and the movable bracket 252 is roll-fitted into the casing-entering guide rail 201 through the casing-entering pulley 27, so that the magnetic driver is driven by the magnetic force of the magnetic driver to make a sliding movement along the bottom of the annular casing-entering guide rail 201, and the movable bracket 252 and the fixed bracket 251 are also driven to make an annular movement.

When the case entering tool 21 moves to the case entering section 50, that is, a section parallel to the main conveyor line 10, at this time, the transport carrier 11 is located right below the case entering tool 21, and the aluminum case 13 is pre-adsorbed on the case entering mechanism 26, the case entering mechanism 26 includes a case entering motor 261 and a suction nozzle 262 fixed on the fixed bracket 251, that is, the aluminum case 13 is adsorbed on one or more groups of suction nozzles 262, and at this time, the case entering pulley 27 of the movable bracket 252 is located in the first horizontal section 202.

With the continuous movement of the magnetic driver, the case entering pulley 27 enters the first transition section 204 and first enters the first downward inclined section 2041, at this time, the whole movable support 252 descends downward for a first section displacement, and then the case entering pulley 27 enters the third horizontal section 2042, during the first section displacement, the aluminum case clamping and aligning mechanism 23 and the cell clamping and aligning mechanism 22 descend synchronously with the movable support 252 and are respectively located on two sides of the aluminum case 13 and the cell 14, and in the third horizontal section 2042, the driving mechanism 24 is started to drive the aluminum case clamping and aligning mechanism 23 and the cell clamping and aligning mechanism 22 to synchronously and horizontally move, so as to center and clamp the aluminum case 13 and the cell 14, and prepare for accurate alignment for subsequent case entering.

The magnetic driver drives the case entering pulley 27 to move from the third horizontal segment 2042 to the second downward inclined segment 2043, at this time, the movable support 252 moves downward for a second displacement, and the case entering motor 261 also drives the suction nozzle 262 to move downward for a distance of the second displacement in synchronization, however, because the sliding fit of the first guide component 253 and the second guide component 254 is provided between the aluminum case clamping and aligning mechanism 23 and the cell clamping and aligning mechanism 22, the descending of the movable support 252 only drives the aluminum case clamping and aligning mechanism 23 to descend in synchronization, and the cell clamping and aligning mechanism 22 keeps the clamping state of the cell 14 from moving. In the second displacement, a part of the aluminum shell 13 is sleeved on the battery cell 14, that is, the pre-shell entering operation between the aluminum shell 13 and the battery cell 14 is completed, and the position between the two is relatively clear, so that the subsequent shell entering and press-fitting requirements are met.

The case entering pulley 27 enters the second horizontal section 203 after being separated from the second downward sloping section 2043, and at this time, the driving mechanism 24 removes the power to the aluminum case clamping and aligning mechanism 23 and the battery cell clamping and aligning mechanism 22, so that the aluminum case clamping and aligning mechanism 23 and the battery cell clamping and aligning mechanism 22 are reset and the aluminum case 13 and the battery cell 14 are loosened, and at this time, the case entering motor 261 is started, so that the suction nozzle 262 pushes the aluminum case 13 to continue to descend until the aluminum case 13 and the battery cell 14 complete the case entering. Subsequently, the case entering pulley 27 enters the second transition section 205 inclined upward, that is, the whole movable support 252 is driven to enter the other end of the first horizontal section 202 from the second horizontal section 203, and in the second transition section 205, the whole movable support 252 is lifted continuously, so that the aluminum case clamping and aligning mechanism 23 and the cell clamping and aligning mechanism 22 are finally separated from the cell 14 and the aluminum case 13 in the vertical direction. Until this time, the case entering tool 21 and the transport carriers 11 both move to the end point of the case entering section 50, and then the case entering tool 21 performs a circulation flow in the first horizontal section 202, while the transport carriers continue to flow forward along the main conveyor line 10.

It should be noted that, in the above embodiment, when the aluminum shell clamping and aligning mechanism 23 and the cell clamping and aligning mechanism 22 slide, the cell clamping and aligning mechanism 22 remains stationary, that is, only the aluminum shell clamping and aligning mechanism 23 is driven by the movable bracket 252 to move downward to complete the operation of pre-inserting the shell, in this embodiment, the cell clamping and aligning mechanism 22 is not driven to move downward synchronously, so that the outer surface of the cell 14 is not abraded, which is beneficial to maintaining the quality of the cell 14.

As to how the cell clamping and positioning mechanism 22 is fixed, in one embodiment, it may only rely on the static friction force generated by clamping the cell 14; in another embodiment, a fixed sleeve 28 may be disposed on the fixed bracket 251, a pull rod 29 is slidably limited in the sleeve 28, a support wheel 291 is disposed at the bottom of the pull rod 29, and an end of the cell clamping and aligning mechanism 22 away from the cell 14 is slidably supported on the support wheel 291. Set up this pull rod 29 and supporting wheel 291 for electric core centre gripping counterpoint mechanism 22 can be comparatively stable when carrying out the opening and shutting of horizontal direction, and simultaneously behind electric core centre gripping counterpoint mechanism 22 through first section displacement, pull rod 29 is about to hold electric core centre gripping counterpoint mechanism 22, makes it unable decline again, thereby in the second section displacement of movable support 252 afterwards, electric core centre gripping counterpoint mechanism 22 can not continue to descend.

In one embodiment, the aluminum shell clamping and aligning mechanism 23 and the cell clamping and aligning mechanism 22 are a pair of clamping plates, and the shapes, materials, and even specific structures of the clamping plates can be designed and modified according to actual requirements of the cell 14 and the aluminum shell 13.

In an embodiment, as shown in fig. 2 to 5, the case entering tool 21 is provided with two pairs of aluminum case clamping and aligning mechanisms 23 and two pairs of cell clamping and aligning mechanisms 22 in total, and four pairs of clamping and aligning mechanisms are respectively located around the cell 14 and the aluminum case 13, so that the cell 14 and the aluminum case 13 can be centered not only left and right, but also front and back, and in this embodiment, four driving mechanisms 24 are required, that is, each driving mechanism 24 individually drives one aluminum case clamping and aligning mechanism 23 and one cell clamping and aligning mechanism 22 which are located on the same side and are distributed up and down.

In one embodiment, as shown in fig. 1 and 6-8, the welding tool 41 includes a protective cover 42 and a lifting motor 43, the protective cover 42 is used for covering the non-welding area on the top cover 12, and the lifting motor 43 is used for enabling the protective cover 42 and the top cover 12 on the battery cell 14 to approach each other.

In one embodiment, the welding tool 41 further includes a supporting claw 44, the lifting motor 43 is connected to the supporting claw 44, when the lifting motor 43 drives the supporting claw 44 to ascend, the supporting claw 44 supports the battery cell 14 until abutting against the protective cover 42, at this time, the protective cover 42 covers the top cover 12 on the battery cell 14, and only a circle of gap formed between the top cover 12 and the aluminum shell 13 is left.

Specifically, in this embodiment, the welding tool 41 includes a fixed frame 45 and a movable frame 46, the fixed frame 45 is slidably limited on the welding conveying line 40, the movable frame 46 is slidably connected to the fixed frame 45, and when the movable frame 46 slides in a direction approaching the battery cell 14, the supporting claw 44 is inserted below the battery cell 14.

The welding conveying line 40 is a magnetic driving annular line, and as shown in fig. 1 and 6-8, the welding conveying line comprises a magnetic driving stator, a magnetic driving element and an annular welding guide rail 47, and the fixing frame 45 is fixedly connected with the magnetic driving element and is driven by the magnetic driving stator to do annular rotary motion. The welding guide rail 47 includes a first welding horizontal section 471, a second welding horizontal section 472, and a first welding inclined section 473 connecting the first welding horizontal section 471 and the second welding horizontal section 472, and the movable frame 46 generates sliding in the first welding inclined section 473 toward the battery cell 14, that is, the first welding horizontal section 471 and the second welding horizontal section 472 are two guide rails on the same horizontal plane, while the second welding horizontal section 472 is closer to the main conveying line 10, and the second welding horizontal section 472 is also in the welding section 52. The movable frame 46 rolls in the welding guide rail 47 via the guide wheel, and when the guide wheel is located in the first welding horizontal section 471, the movable frame 46 and the support claw 44 are in a state of being away from the main conveyor line 10, and when the guide wheel is located in the second welding horizontal section 472, the movable frame 46 and the support claw 44 are in a state of being close to the main conveyor line 10, and at this time, the support claw 44 extends into the bottom of the battery 53.

In this embodiment, a welding head mechanism 48 is further fixed on the welding section 52 of the main conveyor line 10, the welding head mechanism 48 faces the welding section 52, and when the conveyor vehicle transportation battery 53 passes through the welding head mechanism 48, the welding head mechanism 48 performs a welding action to weld and fix the top cover 12 and the aluminum shell 13.

In one embodiment, the welding head mechanism 48 employs a laser welding head and employs a laser flight welding technique, thereby improving the accuracy of the weld during the movement of the battery 53 and ensuring that the weld quality is satisfactory. Moreover, in one embodiment, the welding head mechanism 48 has a plurality of sets, such as two welding head lasers distributed in front and back for welding long sides, that is, two long sides of the battery 53 are welded, and a pair of welding head mechanisms 48 for welding short sides are installed at a downstream station, and the two short sides of the battery 53 are welded at the same time, so that the welding between the battery cell 14 and the top cover 12 can be completed.

In the embodiment, the protective cover 42 is matched with the supporting claw 44 and the lifting motor 43 to clamp the whole battery 53, which is beneficial to ensuring the welding quality, and the supporting claw 44 supports the whole battery 53 from the transport carrier 11, at this time, the influence of power transmission is no longer exerted between the battery 53 and the transport carrier 11, that is, the transportation of the battery 53 completely depends on the advance of the welding tool 41, so that when the welding head mechanism 48 performs welding, only the welding track and the movement between the welding tool 41 need to be controlled to keep synchronous, the movement speed of the transport carrier 11 does not need to be considered, the control difficulty during welding is greatly simplified, and the improvement of the welding quality is facilitated.

In one embodiment, the bonding tool mechanism 48 further includes a bonding tool conveying line which also adopts a magnetic driving annular line, and the bonding tool mechanism 48 is fixedly arranged on a magnetic driving part of the bonding tool conveying line and can rotate along an annular guide rail. And when the welding head mechanism 48 enters the welding section 52, the movement speed of the welding head mechanism 48 is kept the same as that of the transportation jig, so that the welding head mechanism 48 and the battery 53 are kept in a relatively static state, and welding is convenient.

In one embodiment, as shown in fig. 1 and 9-11, the dynamic assembly system for the power battery 53 further includes a press-fitting conveying line 30 and a press-fitting tool 31, a clamping tool 32 is disposed on the press-fitting conveying line 30, the clamping tool 32 slides on the press-fitting conveying line 30 in a driven manner, a press-fitting section 51 parallel to each other is disposed between the press-fitting conveying line 30 and the main conveying line 10, and the transport carrier 11 and the clamping tool 32 move in the same direction and at opposite positions when entering the press-fitting section 51.

This pressure equipment transfer chain 30 and pressure equipment frock 31 are in the low reaches of income shell transfer chain 20 to be located the upper reaches of welding transfer chain 40, and electric core 14 and aluminum hull 13 only accomplished the action of going into the shell in the income shell transfer chain 20 department promptly, and still not complete lock between aluminum hull 13 and electric core 14 and top cap 12, still be in comparatively lax state, thereby need to accomplish the lock between aluminum hull 13 and electric core 14 in pressure equipment transfer chain 30 department and compress tightly, just can provide the operation prerequisite for subsequent welding.

The press-fitting tool 31 comprises a synchronous driving piece 33 and a press-fitting piece 34, the press-fitting piece 34 is provided with a press-fitting surface for press-fitting the aluminum shell 13, and the synchronous driving piece 33 is used for driving the press-fitting piece 34 to move so that the press-fitting surface moves at the conveying speed of the transport carrier 11; and the press fitting tool 31 further comprises a lifting assembly 35 for driving the synchronous assembly to reciprocate along the direction vertical to the direction of the processing speed, namely, the press fitting part 34 is lifted.

In one embodiment, as shown in fig. 9 to 11, the press-fitting member 34 employs a plurality of rotating rollers and a synchronous belt, the synchronous driving member 33 employs a motor and is in power connection with one of the rotating rollers, so as to drive the synchronous belt to rotate at a circulation speed of the transport carrier 11, and an outer surface of the synchronous belt is a press-fitting surface, since the press-fitting surface is the same as the transport speed of the battery cell 14 and the transport speed of the aluminum shell 13, a relatively static state is formed between the press-fitting surface and the battery cell 14, and at this time, the lifting assembly 35 drives the press-fitting member 34 to press down until the aluminum shell 13 is completely buckled into the bottoms of the battery cell 14 and the top cover 12, so as to complete the press-fitting operation, in the whole process, the battery 53 does not need to stop, and does not wear the upper surface of the aluminum shell 13.

In one embodiment, the pressing member 34 may also be a roller structure with a larger diameter, which is rotated by the synchronous driving member 33 and pressed by the lifting assembly 35.

Wherein, the lifting assembly 35 can adopt a cylinder, an electric cylinder, a linear motor, a cam mechanism and the like.

Because the cell 14 and the aluminum shell 13 complete the shell entering action in the shell entering conveying line 20, and the clamping tool 32 plays roles in clamping, positioning and maintaining the relative position of the cell 14 and the aluminum shell 13, the conditions that the press-fitting tool 31 is directly pressed down, dislocation is avoided when the press-fitting tool is pressed down, and the like can be ensured, the position relation between the cell 14 and the aluminum shell 13 can be continuously maintained after the press-fitting is completed, the aluminum shell 13 is prevented from rebounding, and the quality during subsequent welding is ensured.

In one embodiment, as shown in fig. 9-11, the clamping fixture 32 includes:

the first clamping assembly 36 comprises a first driving member 361 and a first clamping member 362, wherein the first driving member 361 is used for driving the first clamping member 362 to open and close along a first linear direction;

the second clamping assembly 37 comprises a second driving part 371, namely a second clamping piece 372, which is connected with the first clamping piece and is used for driving the second clamping piece 372 to open and close along a second linear direction perpendicular to the first linear direction;

the third clamping assembly 38 includes a third driving member 381 and a third clamping member 382, where the third driving member 381 is connected to the second clamping member 372, and is configured to drive the third clamping member 382 to open and close along a third linear direction, and the third linear direction, the first linear direction and the second linear direction are perpendicular to each other.

In one embodiment, the first drive 361, the second drive 371, and the third drive 381 employ jaw cylinders; first clamp member 362, second clamp member 372 and third clamp member 382 each employ a pair of jaws. By the arrangement, the clamping directions of the three pairs of clamping jaws are mutually perpendicular, the cell 14 and the aluminum shell 13 can be centered and clamped in three dimensions, and the cell can be further contracted after press fitting is completed to keep a press fitting state.

In one embodiment, the third clamping member 382 is a pair of vertically arranged clamping jaws for clamping the battery cell 14, the top cap 12 and the aluminum casing 13 in a vertical direction, so as to facilitate press-fitting and maintain the press-fitting state after the press-fitting is completed; the second clamping member 372 is a pair of clamping jaws arranged in a direction perpendicular to the conveying direction of the transport carrier 11, and can center and clamp the battery 53 as a whole in the short side direction of the battery cell 14; the first clamping member 362 is a pair of clamping jaws disposed along the conveying direction of the transport vehicle 11, and is configured to center and clamp the battery 53 as a whole in the longitudinal direction of the battery cell 14. Through the arrangement of the three pairs of clamping pieces, the accuracy of the position can be ensured after the battery 53 integrally enters the press-fitting station from the shell entering station. Meanwhile, the three driving parts can also respectively control the opening and closing of the three clamping parts, so that the clamping tool 32 and the battery 53 can be conveniently sleeved and separated.

Because the press-fitting conveying line 30 is also provided with a magnetic drive ring line, the clamping tool 32 comprises an installation frame 322, the installation frame 322 is fixed with a magnetic driver of the magnetic drive ring line, and the magnetic driver drives the installation frame 322 to slide and flow along the ring-shaped guide rail under the driving of the magnetic driver. The mounting frame 322 is further fixed with a jacking motor 321, the first driving member 361 and the first clamping member 362 are fixedly connected, the first driving member 361 is vertically and slidably fitted on the mounting frame 322, and the movable end of the jacking motor 321 is fixedly connected with the first driving member 361, so that the first driving member 361 and the first clamping member 362 can vertically slide up and down under the driving of the jacking motor 321.

The second driving element 371 is fixedly connected to the second clamping element 372, and the second driving element 371 is fixedly mounted on one jaw of the first clamping element 362, that is, a pair of second clamping elements 372 is mounted on the first clamping element 362, and the pair of second clamping elements 372 approach or separate from each other along with the opening and closing of the first clamping element 362; in addition, the third driving member 381 is fixedly connected to the third clamping member 382, and the third driving member 381 is fixedly installed on one of the clamping jaws of the second clamping member 372, that is, a pair of the third clamping members 382 is installed on each of the second clamping members 372. Therefore, in this embodiment, the first clamping member 362 is one in number, and specifically includes one jaw cylinder and a pair of jaws; the number of the second clamping pieces 372 is two, and the second clamping pieces specifically comprise two clamping jaw cylinders and two pairs of clamping jaws; the third clamping member 382 is four in number, and specifically includes four jaw cylinders and four pairs of jaws. Under the drive of the jacking motor 321, all driving parts and all clamping parts synchronously lift, so that the clamping tool 32 can be sleeved into the aluminum shell 13 of the battery 53 from top to bottom, and subsequent multi-dimensional clamping limiting can be performed.

In one embodiment, since the top cover 12 is located at the bottom when the cover is inserted and press-fitted, the battery cell 14 is fixed to the top cover 12, and the aluminum shell 13 is sleeved on the battery cell 14 and the top cover 12 from above, the whole battery 53 needs to be turned over when the welding is performed subsequently, otherwise, the welding head mechanism 48 is difficult to weld the seam between the top cover 12 and the aluminum shell 13, and thus the clamping tool 32 is further provided with a turning mechanism.

In one embodiment, the pair of second driving members 371 are rotatably connected to the two jaws of the first clamping member 362 and are disposed opposite to each other, the tilting mechanism includes a tilting motor 39, and the tilting motor 39 is power-connected to one of the pair of second driving members 371 for driving the second driving member 371 to rotate the second clamping member 372 fixed thereon. Of course, the turnover motor 39 may be in transmission connection with the second driving member 371 through a timing belt, or may be in direct drive.

Because two second clamping pieces 372 press from both sides tight at the both ends of battery 53 respectively, and keep the tight state of clamp, and these two second clamping pieces 372 all rotate through second driving piece 371 and connect on the clamping jaw of first clamping piece 362, consequently after upset motor 39 starts, drive one of them second clamping piece 372 and produce when rotating, electric core 14 overturns thereupon and can drive another second clamping piece 372 and produce the rotation in step, and after accomplishing the upset, upset motor 39 stops, top cap 12 is located the upper end this moment, convenient subsequent welding operation.

In one embodiment, considering that only one second driving member 371 is in power connection with the flipping motor 39, and the other second driving member 371 is in a free state, and can rotate to any angle relative to the first clamping member 362, it is necessary to make a constraint on the rotation direction of the second driving member 371, so as to ensure that the two second driving members 371 can be flipped and positioned synchronously, avoid the situation of dislocation, and ensure that the clamping tool 32 can be smoothly sleeved on the aluminum shell 13 of the battery 53. Therefore, a braking structure is further provided on one jaw of the first clamping member 362, which limits and restrains the second driving member 371 in a free state in the circumferential direction, and contacts the limiting and restraining function in time when the overturning action is required to be performed.

Specifically, the braking structure may be a clutch brake, which is disconnected or connected by the clutch power to realize the tightening or releasing of the second driving member 371; the braking structure can also be a tongue-and-pin structure, a plurality of pins are configured according to a plurality of positions of the second driving part 371, the tongue is fixed on the first clamping part 362, and the free rotation of the second driving part 371 is restrained in a form of insertion and fixation; of course, the braking structure can be more structures for braking the second driving member 371, and similar arrangements in the prior art can be referred to.

In one embodiment, a dynamic assembly method is also disclosed, which is mainly used for an assembly system of a power battery 53, wherein the assembly system comprises a main conveyor line 10, a shell-entering conveyor line 20 and a welding conveyor line 40, and the dynamic assembly method comprises the following steps:

the main conveying line 10 conveys the transport carrier 11 to a shell entering section 50 on one side of the shell entering conveying line 20 at a shell entering processing speed, the shell entering conveying line 20 conveys the shell entering tooling 21 to a position opposite to the transport carrier 11 at the shell entering processing speed, and the shell entering tooling 21 performs shell entering action on the shell entering section 50;

the main conveying line 10 conveys the transport carrier 11 to a welding section 52 on one side of the welding conveying line 40 at the welding processing speed, the welding conveying line 40 conveys the welding tool 41 to the position opposite to the transport carrier 11 at the welding processing speed, and the welding tool 41 performs welding operation on the welding section 52.

In one embodiment, the method further comprises, after completing the entering the shell action: the main conveyor line 10 conveys the transport vehicle 11 to a press-fitting section 51 on one side of the press-fitting conveyor line 30 at a press-fitting processing speed, the press-fitting conveyor line 30 conveys the clamping tool 32 to a position opposite to the transport vehicle 11 at the press-fitting processing speed, and the clamping tool 32 clamps the battery cell 14 in the press-fitting section 51;

the press-fitting tool 31 drives the press-fitting surface to move at a press-fitting processing speed, and drives the press-fitting surface to perform a press-fitting operation on the aluminum case 13 while the clamping tool 32 is kept in a clamped state.

By the method, the battery cell 14 or the battery 53 is kept in a moving state on the transport carrier 11 along the main conveying line 10, and uninterrupted rotary transportation is realized under the condition of adopting a magnetic drive annular line; meanwhile, in the assembling process, a plurality of processes such as shell entering, press fitting and welding can be dynamically completed without stopping the machine, and the assembling efficiency of the whole battery 53 is greatly improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. Moreover, in other embodiments, the battery assembling system may also include more stations and related devices, such as a feeding station, a core combining station, a rubberizing station, a tab folding station, a pre-welding station, etc., which may be arranged on the main conveying line or in an additional line according to actual process and product requirements, and are included in the dynamic assembling concept of the present invention.

Claims

1. The dynamic assembly system of the power battery is characterized by comprising,

2. The dynamic power battery assembling system of claim 1, wherein the case entering tool comprises:

the guide mechanism is used for guiding the electric core clamping and aligning mechanism and the aluminum shell clamping and aligning mechanism to slide so as to drive the electric core and the aluminum shell to approach each other oppositely;

and the shell entering mechanism is used for taking the aluminum shell and sleeving the aluminum shell on the battery cell.

3. The dynamic power battery assembling system according to claim 2, wherein the guide mechanism comprises a fixed support and a movable support, the movable support is slidably disposed on the fixed support in a direction from the aluminum casing clamping and aligning mechanism to the cell clamping and aligning mechanism, and the fixed support is slidably constrained on the casing-entering conveying line;

the shell entering mechanism is fixed on the fixed support;

4. The dynamic power battery assembly system according to claim 3, wherein the movable support synchronously drives the aluminum casing clamping and aligning mechanism to slide, the guiding mechanism further includes a first guiding assembly connected to the battery cell clamping and aligning mechanism and a second guiding assembly connected to the aluminum casing clamping and aligning mechanism, and the first guiding assembly and the second guiding assembly are slidably connected to match the battery cell and the aluminum casing to approach each other.

5. The dynamic power battery assembling system according to claim 4, wherein a case entering guide rail is arranged on the case entering conveying line, the case entering guide rail comprises a first horizontal section, a second horizontal section and a first transition section connecting the first horizontal section and the second horizontal section, and the first horizontal section is higher than the second horizontal section in level;

6. The dynamic power battery assembly system of claim 5, wherein the first transition section is stepped, the first transition section includes a first downward inclined section, a third horizontal section, and a second downward inclined section, which are sequentially connected, in the first downward inclined section, the aluminum casing and the battery core are aligned vertically, in the third horizontal section, the battery core clamping and aligning mechanism and the aluminum casing clamping and aligning mechanism simultaneously clamp and position the aluminum casing and the battery core, and in the second downward inclined section, the aluminum casing is sleeved into the battery core.

7. The dynamic power battery assembling system of claim 1, wherein the welding tool comprises:

a protective cover is arranged on the outer side of the shell,

8. The dynamic power battery assembly system according to claim 7, wherein the welding tool further comprises a bearing claw, the lifting motor is connected with the bearing claw, and when the lifting motor drives the bearing claw to ascend, the bearing claw supports the battery cell until the battery cell is tightly abutted to the protective cover.

9. The dynamic power battery assembling system of claim 8, wherein the welding tool comprises a fixed frame and a movable frame, the fixed frame is slidably disposed on the welding conveyor line, the movable frame is slidably connected to the fixed frame, and when the movable frame slides in a direction close to the battery cell, the supporting claws are inserted into the lower portion of the battery cell.

10. The dynamic power battery assembling system of claim 9, wherein the fixed frame is slidably constrained on the welding conveying line, the welding conveying line is further provided with a welding guide rail, the movable frame is provided with a guide wheel, the guide wheel is in rolling fit with the welding guide rail, the welding guide rail comprises a first welding horizontal section, a second welding horizontal section and a first welding inclined section connecting the first welding horizontal section and the second welding horizontal section, and the movable frame slides in the first welding inclined section towards the battery core.

11. The dynamic power battery assembling system of claim 1, further comprising a press-fitting conveying line and a press-fitting tool, wherein a clamping tool is arranged on the press-fitting conveying line, the clamping tool is driven to slide on the press-fitting conveying line, press-fitting sections parallel to each other are arranged between the press-fitting conveying line and the main conveying line, and the transport carrier and the clamping tool move in the press-fitting sections at opposite positions and in the same speed and in the same direction.

12. The dynamic power battery assembling system of claim 11, wherein the press-fitting tool comprises a synchronous driving member and a press-fitting member, the press-fitting member has a press-fitting surface for press-fitting an aluminum shell, and the synchronous driving member is used for driving the press-fitting member to move, so that the press-fitting surface moves at the conveying speed of the transport carrier; and

13. The dynamic power battery assembling system of claim 11, wherein the clamping tool comprises:

and the third clamping assembly comprises a third driving part and a third clamping part, the third driving part is connected with the second clamping part and is used for driving the third clamping part to open and close along a third linear direction, and the third linear direction, the first linear direction and the second linear direction are mutually vertical.

14. The dynamic power battery assembling system of claim 11, wherein the main conveying line, the case entering conveying line, the welding conveying line and the press-fitting conveying line are all magnetic driving ring lines, each magnetic driving ring line comprises a magnetic driving stator, a magnetic driving sub and a ring-shaped guide rail, and the magnetic driving sub is slidably connected below the ring-shaped guide rail.

15. The dynamic assembling method is applied to a dynamic assembling system of a power battery, and is characterized in that the assembling system comprises a main conveying line, a shell entering conveying line and a welding conveying line, and the dynamic assembling method comprises the following steps:

16. The dynamic assembly method of claim 15, further comprising, after completing the entering the shell: the main conveying line conveys the transport carrier to a press-fitting section on one side of the press-fitting conveying line at a press-fitting speed, the press-fitting conveying line conveys a clamping tool to a position opposite to the transport carrier at the press-fitting speed, and the clamping tool clamps the battery cell at the press-fitting section;

the press-fitting tool drives the press-fitting surface to move at a press-fitting machining speed, and drives the press-fitting surface to perform press-fitting action on the aluminum shell during the period that the press-fitting tool keeps a clamping state.