CN109014729B - A traveling battery cell positioning string welding assembly production line - Google Patents

Abstract

The invention relates to an assembling production line for positioning and stringing welding of accompanying electric cores, which comprises a fixed belt processing part, an electric core transporting part, a conductive strip processing part and an electric core combination part; wherein the electric core transporting part is fixed on a frame and is used for transporting the electric cores to be transported. Cells that are processed, processed and processed; the fixing belt processing part is located at the front end of the cell transport part; the cell combination part is located at the back end of the cell transport part; the cell transport part includes a cell conveyor belt, which is transported in the cell transport part. The linear array on the belt is provided with a number of cell claws; the fixing belt processing part includes a fixing belt moving bracket, and the fixing belt moving bracket includes a puncture roller; the conductive belt processing part is a structure for hot pressing the conductive belt to the surface of the fixing belt; The core assembly part includes a floating plate and a supporting plate, and the supporting plate is fixed on the frame; the floating plate is connected to the supporting plate through several sets of linear drive mechanisms; the floating plate is connected with a cell pressing head; the cell pressing head is installed in the There are high voltage discharge heads.

Description

A traveling battery cell positioning string welding assembly production line

technical field

The invention relates to an assembling production line for positioning and stringing welding of accompanying electric cores, belonging to the field of electric core manufacturing.

Background technique

With the development of new energy, there are more and more products such as electric vehicles; and its energy is mainly a battery pack composed of an array of lithium battery cells after welding; lithium batteries are generally welded and fixed in the battery pack. It is transported through the relevant mechanical guide rails, and then the cells are fixed by the strength of the welding strip itself; however, because the welding strip itself has poor resistance to metal fatigue, for battery packs with larger capacity, the number of cells increases after the number of cells increases. , the string welding tape is easy to break or desolder due to excessive force during the process of loading the cell into the battery pack, which seriously affects the stability of the battery pack.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the technical problem of the lack of a stable fixing structure for the cells in the battery pack in the prior art, and to provide an assembly line for positioning and stringing welding of the accompanying cells.

The technical scheme adopted by the present invention to solve its technical problems is:

An accompanying battery cell positioning string welding assembly production line, comprising a fixed belt processing part, a battery cell transportation part, a conductive belt processing part and a battery cell combination part; wherein the battery core transportation part is fixed on a frame, and is used for transportation to be processed and processed. Medium and processed cells;

The fixed belt processing part and the conductive belt processing part are integrated and located at the front end of the cell transport part; the cell combination part is located at the rear end of the cell transport part; wherein the cell transport part includes an unwinding wheel and a winding There is a driving section between the unwinding wheel and the winding wheel, and a battery conveyor belt is wound on the unwinding wheel. The battery core conveyor belt is made of soft plastic, and the battery core conveyor belt is The linear array is provided with a number of cell claws, and the cell claws include two mirror-symmetrical arc-shaped cards; the gap between two adjacent cell claws is L, and the winding wheel is used to wind the cell. the other end of the conveyor belt;

The fixed belt processing part includes a fixed belt moving support with a mirror-symmetric structure, the fixed belt moving support is symmetrical with respect to the conveying axis of the cell conveyor belt, and the fixed belt moving support is fixed on the frame; The moving bracket includes two sets of symmetrical fixed belt moving gaps. An axial end of the fixed belt moving gap is provided with a fixed belt unwinding wheel, and a fixed belt driving roller is arranged in the middle of the fixed belt moving gap. The fixed belt The side wall surface of the driving roller extends into the moving gap of the fixed belt; the other end of the moving gap of the fixed belt is provided with a fixed belt perforation mechanism, and the fixed belt perforation mechanism includes a puncture roller on which the puncture roller is mounted. The annular array is provided with several groups of conical puncture blocks; the moving gap of the fixed belt corresponds to the other side of the puncture roller with a squeezing roller; the fixed belt is pulled by the fixed belt drive roller and retracted from the fixed belt unwinding wheel roll, and puncture through the rotating puncture roller; the circumferential distance between two adjacent puncture blocks is L;

The conductive tape processing part includes a conductive tape moving gap integrated with the aforementioned fixed tape moving gap, wherein a conductive tape unwinding wheel is provided at a position near the end of the fixed tape unwinding wheel in the conductive tape moving gap; A conductive belt introduction port is arranged on the conductive belt moving gap, and the conductive belt is introduced from the conductive belt introduction port to the fixed belt moving gap; a set of conductive belt heating mechanisms are also arranged inside the fixed belt moving gap, and the conductive belt heating mechanism includes: Two sets of mirror-symmetrical heat-conducting clips are arranged between the thermal-conducting clips, and a conductive belt heating gap is arranged between the heat-conducting clips, and the conductive strip passes through the aforementioned conductive strip heating gap; The conductive strip processing part further comprises an arc-shaped conductive strip forming groove arranged on the puncture block, and the conductive strip forming groove is arranged along the tapered inclined surface of the puncture block;

The cell assembly part includes two sets of mirror-symmetrical cell compaction mechanisms, the cell compaction mechanism includes a floating plate and a support plate, and the support plate is fixed on the frame; two cell compaction mechanisms The supporting plate is symmetrically arranged relative to the movement axis of the battery conveyor belt; the floating plate is connected to the supporting plate through several sets of linear drive mechanisms whose movement axes are perpendicular to the supporting plate; the floating plate is connected with a cell press-fitting head , the cell press-fitting head is a circular sleeve structure, and there is a press inlet opening toward the symmetry axis of the fixed plate inside; the inner wall of the press inlet is provided with two sets of mirror-symmetrical pressing grooves, and the press inlet is Cylindrical, the pressing groove includes a press-in part located on the side wall of the cylinder of the press-in port and a bent part on the bottom wall of the cylinder of the press-in port; a high-voltage discharge head is also connected in the middle of the cylindrical bottom wall of the press-in port; two adjacent two The spacing of the cell press head is L;

The unwinding part of the unwinding wheel of the cell transport part is located at the axial front end of the fixed belt processing part, and the winding part of the winding wheel is located at the bottom of the fixed belt processing part.

As a further improvement of the present invention, several groups of connection holes are arranged in a linear array on the floating plate; a cylindrical insulating seat is arranged at the tail of the press-fitting head of the cell, the insulating seat is in contact with the floating plate, and the insulating seat passes through The screws of the aforementioned connection holes are fixed to the floating plate.

As a further improvement of the present invention, the fixed belt moving bracket includes a moving guide rail structure, and a fixed belt moving gap with a rectangular cross-section is set in the moving guide rail structure; the introduction of the fixed belt unwinding wheel in the fixed belt moving gap An acute included angle is arranged between the port and the lead-out port of the puncture roller, and the fixed belt driving roller is located at the included angle position of the aforementioned fixed belt moving gap.

As a further improvement of the present invention, the linear drive mechanism is a linear telescopic cylinder.

As a further improvement of the present invention, the fixing belt and the cell conveyor belt are made of PE material.

The beneficial effects of the present invention are:

1. The present invention improves the battery cell fixing form in the prior art, from the original battery cell that relies on string welding tape for fixing to a new type that is positioned by an insulating sleeve and pressed by two pieces of PE tapes at the same time. Cell fixing structure; the whole set of combination lines has a simple structure, which can fix the cells at a fixed distance without affecting the later assembly of the cells, which not only improves the fixing strength and anti-riot index of the cells, but also facilitates the later stages of the cells. string welding process.

2. The cell press-fitting head adopts an insulating structure to connect with the floating board. First, the metal cell press-fitting head can ensure the press-fitting effect and durability, and at the same time, the insulating connection structure can prevent the current released by the cell from affecting the related electrical control. The stability of the device is affected.

3. The moving guide rail structure is to set the fixed belt moving gap in an integrated guide block, and the arrangement of the angle increases the contact area between the fixed belt and the fixed belt driving roller, and improves the transmission of driving force.

4. PE material has good toughness and strength, and at the same time has a low bonding force, which can ensure the fixing effect of the battery cell, and at the same time ensure that the fixing belt of the battery core can be easily cut to facilitate the realization of the battery core. Arrange again.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of the present invention;

In the figure: 1. Fixed belt moving bracket; 2. Fixed belt moving gap; 3. Fixed belt unwinding wheel; 4. Fixed belt driving roller; 5. Squeeze roller; 6. Piercing roller; 7. Piercing block; 8. Fixing belt; 9. Fixing hole; 10. Unwinding wheel; 11. Cell conveyor belt; 12. Cell clamping claw; 13. Cell; 14. Positioning sleeve; 15. Screw; 16. Support plate; 17 , linear drive mechanism; 18, floating plate; 19, cell press-fitting head; 20, pressure inlet; 21, insulating seat; 22, thermally conductive clip; 23, conductive tape unwinding wheel; 24, conductive tape; 25, conductive With forming groove; 26, pressing groove; 27, high voltage discharge head.

Detailed ways

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

As shown in FIG. 1 , the present invention is an assembly production line for positioning and stringing welding of accompanying cells, which is characterized in that it includes a fixed belt processing part, a cell transporting part, a conductive strip processing part and a cell combining part; wherein the cell transporting part Fixed on the rack, used to transport the cells to be processed, processed, and processed;

The fixed belt processing part and the conductive belt processing part are integrated and located at the front end of the cell transport part; the cell combination part is located at the rear end of the cell transport part; wherein the cell transport part includes an unwinding wheel and a winding There is a driving section between the unwinding wheel and the winding wheel, and a battery conveyor belt is wound on the unwinding wheel. The battery core conveyor belt is made of PE, and is linearly arrayed on the battery core conveyor belt. A number of cell claws are provided, and the cell claws include two mirror-symmetrical arc-shaped cards; the gap between two adjacent cell claws is L, and the winding wheel is used to wind the cell conveyor belt the other end of ;

The fixed belt processing part includes a fixed belt moving bracket with a mirror-symmetric structure. The overall structure of the fixed belt moving support is symmetrical to the conveying axis of the cell conveyor belt. The fixed belt moving support is fixed on the frame, and the fixed belt moving support There are two moving guide rail structures on the top, and the moving guide rail structure is provided with a fixed belt moving gap with a rectangular cross-section; an axial end of the fixed belt moving gap is provided with a fixed belt unwinding wheel. A fixed belt driving roller is arranged in the middle of the moving gap, and the side wall surface of the fixed belt driving roller extends into the fixed belt moving gap; the other end of the fixed belt moving gap is provided with a fixed belt perforating mechanism, the fixed belt perforating mechanism It includes a puncture roller, on which there are several groups of conical puncture blocks arranged in an annular array; a squeezing roller is arranged on the other side of the puncture roller corresponding to the movement gap of the fixed belt; The belt is unrolled on the unwinding wheel, and punctured by the rotating puncture roller; the circumferential distance between two adjacent puncture blocks is L, and the transport gap is fixed between the lead-in port of the unwinder and the lead-out port of the puncture roller. Arranged at an acute angle, the fixed belt drive roller is located at the angle position of the aforementioned movement gap;

The conductive tape processing part includes a conductive tape moving gap integrated with the aforementioned fixed tape moving gap, wherein a conductive tape unwinding wheel is provided at a position near the end of the fixed tape unwinding wheel in the conductive tape moving gap; A conductive belt introduction port is arranged on the conductive belt moving gap, and the conductive belt is introduced from the conductive belt introduction port to the fixed belt moving gap; a set of conductive belt heating mechanisms are also arranged inside the fixed belt moving gap, and the conductive belt heating mechanism includes: Two sets of mirror-symmetrical heat-conducting clips are provided, between the thermal-conducting clips, a heating gap of a conductive strip is arranged, and the conductive strip passes through the aforementioned heating gap of the conductive strip; The conductive strip processing part further comprises an arc-shaped conductive strip forming groove arranged on the puncture block, and the conductive strip forming groove is arranged along the tapered inclined surface of the puncture block;

The cell assembly part includes two sets of mirror-symmetrical cell compaction mechanisms, the cell compaction mechanism includes a floating plate and a support plate, and the support plate is fixed on the frame; two cell compaction mechanisms The supporting plate is symmetrically arranged relative to the movement axis of the battery conveyor belt; the floating plate is connected to the supporting plate through several sets of linear driving mechanisms whose movement axes are perpendicular to the supporting plate. The linear driving mechanism can use a linear telescopic cylinder to reduce rigid drive Influence on the cell; the floating plate is connected with a cell press-fitting head, the cell press-fitting head is a circular sleeve structure, and a press inlet opening toward the symmetrical axis of the fixed plate is arranged inside; the The inner wall of the pressure inlet is provided with two sets of mirror-symmetrical pressing grooves, the pressing inlet is cylindrical, and the pressing groove includes a pressing part located on the side wall of the pressing inlet cylinder and a bending part on the bottom wall of the pressing inlet cylinder; There is also a high-voltage discharge head connected to the middle of the cylindrical bottom wall;

The unwinding part of the unwinding wheel of the cell transport part is located at the axial front end of the fixed belt processing part, and the winding part of the winding wheel is located at the bottom of the fixed belt processing part.

During processing, the fixed belt unwinding wheel, fixed belt driving roller, puncture roller and other structures rotate synchronously;

The first is that the cells move with the cell conveyor belt, and move one by one between the floating plates of the cell combination part;

At the same time, the puncture roller perforates the fixed belt, so that the fixed belt has an array of holes, and the surface of the extrusion roller is soft, which can ensure that the puncture block on the puncture roller can successfully pierce the fixed belt;

At the same time, the conductive tape located on the unwinding wheel of the conductive tape is unrolled and penetrated into the moving gap of the fixed belt. The conductive tape is heated by the thermal conductive clip, so that after the conductive tape is heated, the fixed belt drives the roller to squeeze. Press and embed it into the fixing belt, while the puncture roller pierces the fixing belt, a welding protrusion is formed at the fixing hole position of the fixing belt through the forming groove of the conductive belt on the puncturing block;

When the cell and the fixing belt are moved to the floating plate by the same part, the floating plate is driven by the linear drive mechanism to move towards each other, so that the cell pressing head at one end squeezes the cell claw to break or unfold it. At the same time, the fixing holes on the fixing belt are expanded under the synchronous extrusion of the cell and the cell extrusion head, until the fixing belt is symmetrically pressed against the two ends of the positioning sleeve, so that the expanded fixing holes in the fixing belt The sleeve of the cell is fixed, and the pressing groove in the cell press-fitting head can bend the conductive tape, so that the conductive tape can be partially wrapped to the end of the cell, and at the same time, through the discharge of the high-voltage discharge head, the The conductive tape can be welded to the electrode of the cell to realize serial welding connection; the processed cell conveyor belt is wound by the winding wheel; and the cell is cut in an array due to the vertical non-foldability of the fixing belt, and properly storage.

Taking the above ideal embodiments according to the present invention as inspiration, and through the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the specification, and the technical scope must be determined according to the scope of the claims.

Claims (5)

1. An accompanying battery cell positioning string welding assembly production line is characterized in that: comprising a fixed belt processing part, a battery core transportation part, a conductive belt processing part and a battery core combination part; wherein the battery core transportation part is fixed on the frame, with Cells that are to be processed, processed or processed during transportation; The fixed belt processing part and the conductive belt processing part are integrated and located at the front end of the cell transport part; the cell combination part is located at the rear end of the cell transport part; wherein the cell transport part includes an unwinding wheel and a winding There is a driving section between the unwinding wheel and the winding wheel, and a battery conveyor belt is wound on the unwinding wheel. The battery core conveyor belt is made of soft plastic, and the battery core conveyor belt is The linear array is provided with a number of cell claws, and the cell claws include two mirror-symmetrical arc-shaped cards; the gap between two adjacent cell claws is L, and the winding wheel is used to wind the cell. the other end of the conveyor belt; The fixed belt processing part includes a fixed belt moving support with a mirror-symmetric structure, the fixed belt moving support is symmetrical with respect to the conveying axis of the cell conveyor belt, and the fixed belt moving support is fixed on the frame; The moving bracket includes two sets of symmetrical fixed belt moving gaps. An axial end of the fixed belt moving gap is provided with a fixed belt unwinding wheel, and a fixed belt driving roller is arranged in the middle of the fixed belt moving gap. The fixed belt The side wall surface of the driving roller extends into the moving gap of the fixed belt; the other end of the moving gap of the fixed belt is provided with a fixed belt perforation mechanism, and the fixed belt perforation mechanism includes a puncture roller on which the puncture roller is mounted. The annular array is provided with several groups of conical puncture blocks; the moving gap of the fixed belt corresponds to the other side of the puncture roller with a squeezing roller; the fixed belt is pulled by the fixed belt drive roller and retracted from the fixed belt unwinding wheel roll, and puncture through the rotating puncture roller; the circumferential distance between two adjacent puncture blocks is L; The conductive tape processing part includes a conductive tape moving gap integrated with the aforementioned fixed tape moving gap, wherein a conductive tape unwinding wheel is provided at a position near the end of the fixed tape unwinding wheel in the conductive tape moving gap; A conductive belt introduction port is arranged on the conductive belt moving gap, and the conductive belt is introduced from the conductive belt introduction port to the fixed belt moving gap; a set of conductive belt heating mechanisms are also arranged inside the fixed belt moving gap, and the conductive belt heating mechanism includes: Two sets of mirror-symmetrical heat-conducting clips are arranged between the thermal-conducting clips, and a conductive belt heating gap is arranged between the heat-conducting clips, and the conductive strip passes through the aforementioned conductive strip heating gap; The conductive strip processing part further comprises an arc-shaped conductive strip forming groove arranged on the puncture block, and the conductive strip forming groove is arranged along the tapered inclined surface of the puncture block; The cell assembly part includes two sets of mirror-symmetrical cell compaction mechanisms, the cell compaction mechanism includes a floating plate and a support plate, and the support plate is fixed on the frame; two cell compaction mechanisms The supporting plate is symmetrically arranged relative to the movement axis of the battery conveyor belt; the floating plate is connected to the supporting plate through several sets of linear drive mechanisms whose movement axes are perpendicular to the supporting plate; the floating plate is connected with a cell press-fitting head , the cell press-fitting head is a circular sleeve structure, and there is a press inlet opening toward the symmetry axis of the fixed plate inside; the inner wall of the press inlet is provided with two sets of mirror-symmetrical pressing grooves, and the press inlet is Cylindrical, the pressing groove includes a press-in part located on the side wall of the cylinder of the press-in port and a bent part on the bottom wall of the cylinder of the press-in port; a high-voltage discharge head is also connected in the middle of the cylindrical bottom wall of the press-in port; two adjacent two The spacing of the cell press head is L; The unwinding part of the unwinding wheel of the cell transport part is located at the axial front end of the fixed belt processing part, and the winding part of the winding wheel is located at the bottom of the fixed belt processing part. 2 . The production line for positioning and stringing welding of accompanying cells according to claim 1 , wherein: the floating board is provided with several groups of connection holes in a linear array; the tail of the press-fitting head of the cells is provided with posts The insulating seat is in contact with the floating board, and the insulating seat is fixed to the floating board by screws passing through the aforementioned connecting holes. 3. A traveling battery cell positioning string welding assembly production line according to claim 1, characterized in that: the fixed belt moving bracket comprises a moving guide rail structure, and a fixed belt with a rectangular cross-section is arranged in the moving guide rail structure Movement gap; in the fixed belt movement gap, the inlet of the fixed belt unwinding wheel and the outlet of the puncture roller are arranged at an acute angle, and the fixed belt drive roller is located at the aforementioned angle position of the fixed belt movement gap. 4 . The assembly line for positioning and stringing welding of accompanying cells according to claim 1 , wherein the linear drive mechanism is a linear telescopic cylinder. 5 . 5 . The battery cell positioning string welding assembly line as claimed in claim 1 , wherein the fixing belt and the cell conveyor belt are made of PE material. 6 .

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