Lithium battery module pre-stacking mechanism

Abstract

The utility model provides a lithium battery module pre-stacking mechanism, the mechanism is arranged before module stacking, every two cells are pre-stacked, the problems of low precision, low efficiency and the like in the existing cell stacking are solved, and the main scheme is as follows: the lithium battery module pre-stacking mechanism comprises a stepping wire which is conveyed to at least two cell pre-stacking positions; a positioning piece is fixed on the outer side of the battery cell pre-stacking position at the head end, the positioning piece is used for jacking and clamping the battery cells at the corresponding battery cell pre-stacking positions, external battery cells are conveyed to each battery cell pre-stacking position through the stepping wire, and a translation piece, a lifting piece and a positioning plate are further arranged at the bottom of the stepping wire. The translation piece pneumatically drives the lifting piece to move in the conveying direction of the stepping line, the lifting piece is used for driving the positioning plate to move in the direction perpendicular to the stepping line in a servo mode, and vacuum suction cups are fixed to the four corners of the bottom of the positioning plate to adsorb battery cells.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a pre-stacking mechanism for lithium battery modules. Background Technology

[0002] Lithium-ion battery module stacking is a core process in lithium-ion battery pack production. During the production of pouch or prismatic cell modules, the cells need to be stacked together. Current lithium-ion battery module stacking technologies typically stack one cell at a time. However, this method has several drawbacks, such as low stacking accuracy and inefficiency. Therefore, improving the accuracy and efficiency of lithium-ion battery module stacking while reducing production costs has become a pressing issue. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a lithium battery module pre-stacking mechanism, which can improve the stacking efficiency while ensuring stacking accuracy.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a lithium battery module pre-stacking mechanism, including a stepping line, the stepping line having at least two pre-stacking positions for the battery cells along its conveying direction, and a positioning component fixed at the bottom of each pre-stacking position for lifting and clamping the battery cell at the corresponding pre-stacking position. External battery cells are transported to each pre-stacking position through the stepping line. The bottom of the stepping line is also provided with a translation component, a lifting component, and a positioning plate. The translation component pneumatically drives the lifting component to move along the conveying direction of the stepping line. The lifting component is used to servo drive the positioning plate to move in a direction perpendicular to the stepping line. Vacuum suction cups are fixed at the four corners of the bottom of the positioning plate to adsorb the battery cells.

[0005] Furthermore, the positioning component includes a cylinder mounting base, a first cylinder, a second cylinder, a cylinder connecting plate, and a support platform. The first cylinder is fixedly connected to the side end of the stepper line via the cylinder mounting base, and its output end is fixedly connected to the support platform. The support platform is parallel to the external battery cell, and its bottom is fixedly connected to the second cylinder. The output end of the second cylinder is exposed on the support platform. A first fixing block is connected to the same position via the cylinder connecting block. The first fixing block is perpendicular to the top of the support platform and located on the side of the support platform corresponding to the stepper line's feeding direction. A second fixing block is provided on the opposite end of the support platform corresponding to the first fixing block to cooperate with it.

[0006] Furthermore, a through hole is provided on the top surface of the support platform, and a photoelectric sensor is fixed on the cylinder mounting base at the corresponding through hole. The photoelectric sensor is used to sense the presence of material.

[0007] Furthermore, multiple cell pre-stacked positions are grouped in pairs to stack external cells in pairs.

[0008] Furthermore, the stepping line includes at least one unloading position corresponding to each cell pre-stacking position.

[0009] Furthermore, the translation component includes a slide table, a slide rail, a slider, a third cylinder, a slider bracket, and a top plate. The slide rail is in the same direction as the conveyor belt and is fixed to the top of the slide table. The slider is slidably connected to the slide rail, and its top is connected and fixed to the top plate through the slider bracket. The third cylinder is fixed to the outside of the belt conveyor and its output end is connected and fixed to the slider bracket. One end of the top plate is exposed to the slide rail, and a downward mounting plate is fixed to the exposed end. The lifting component is connected and fixed to the downward mounting plate.

[0010] Furthermore, the length of the slide rail can correspond to each of the cell pre-stack positions.

[0011] Furthermore, the slider bracket has a limit block protruding at the end away from the lifting component, and the top of the slide table has hard limits fixed at both ends of the corresponding slide rail, and the limit block can abut against the two hard limits.

[0012] Furthermore, the lifting component includes a cylinder adjusting plate and a fourth cylinder. The pressing mounting plate is installed vertically and has multiple adjusting holes equidistantly spaced along its height. The pneumatic rod adjusting plate is bolted into the adjusting holes. The fourth cylinder is connected and fixed to the bottom of the cylinder adjusting plate, and its output end is connected and fixed to the center of the positioning plate.

[0013] Furthermore, a pressing block is fixed at the bottom center of the positioning plate, and a pressing suction cup is fixed at the bottom of the pressing block. The pressing suction cup is flush with the vacuum suction cup.

[0014] Compared with the prior art, the beneficial effects of this utility model include: by pre-stacking the cells online on the cell stepping line, the cells do not need to be repeatedly switched laterally. The stacking process relies on the servo displacement of the corresponding servo mechanism in the lateral and vertical directions, and the cell extraction and pressing operation are realized by vacuum suction cup. The lifting, clamping and positioning method can ensure the stacking accuracy of each stacking position, resulting in high stacking efficiency and practicality. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0016] Figure 1 The schematic diagram shows an overall structural diagram of a stacked structure according to one embodiment of the present invention;

[0017] Figure 2 The schematic diagram shows a positioning element structure according to one embodiment of the present invention;

[0018] Figure 3 The schematic diagram shows the structural diagram of the translation member and the lifting member according to one embodiment of the present invention.

[0019] The diagram is labeled as follows: 1. Stepping line; 2. Cell pre-stacking position; 3. Positioning component; 301. Cylinder mounting base; 302. First cylinder; 303. Second cylinder; 304. Cylinder connecting plate; 305. Support platform; 306. First fixing block; 307. Second fixing block; 4. Translation component; 401. Slide table; 402. Slide rail; 403. Slider; 404. Third cylinder; 405. Slider bracket; 406. Top plate; 407. Lowering mounting plate; 5. Lifting component; 501. Cylinder adjusting plate; 502. Fourth cylinder; 503. Adjustment hole; 6. Positioning plate; 7. Vacuum suction cup; 8. Cell; 9. Through hole; 10. Photoelectric sensor; 11. Limiting block; 12. Hard limit; 13. Lowering block; 14. Lowering suction cup; 15. Unloading position. Detailed Implementation

[0020] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0021] According to one embodiment of the present invention, in conjunction with Figures 1-3 As shown.

[0022] like Figure 1 As shown, in this embodiment, a lithium battery module pre-stacking mechanism includes a stepping line 1. The stepping line 1 has at least two pre-stacking positions 2 for the cells along its transport direction. A positioning member 3 is fixed on the outside of each pre-stacking position 2. The positioning member 3 is used to lift and clamp the cells 8 corresponding to the pre-stacking positions 2. The external cells 8 are transported to each pre-stacking position 2 through the stepping line 1. A translation member 4, a lifting member 5, and a positioning plate 6 are also provided on one side of the stepping line 1. The translation member 4 servo drives the lifting member 5 to move along the transport direction of the stepping line 1. The lifting member 5 servo drives the positioning plate 6 to move in a direction perpendicular to the stepping line 1. Vacuum suction cups 7 are fixed at the four corners of the bottom of the positioning plate 6 to adsorb the cells 8.

[0023] The following combination Figure 2 and Figure 3 The actual structure mentioned above will be further explained.

[0024] For the positioning component 3, the positioning component 3 includes a cylinder mounting base 301, a first cylinder 302, a second cylinder 303, a cylinder connecting plate 304, and a support platform 305. The first cylinder 302 is fixedly connected to the side end of the stepping line 1 through the cylinder mounting base 301, and its output end is fixedly connected to the support platform 305. The support platform 305 is parallel to the external battery cell 8, and its bottom is fixedly connected to the second cylinder 303. The output end of the second cylinder 303 can be exposed on the support platform 305. A first fixing block 306 is connected to it through the cylinder connecting block. The first fixing block 306 is perpendicular to the top of the support platform 305 and is located on the side of the support platform 305 corresponding to the conveying direction of the stepping line 1. A second fixing block 307 is provided on the opposite end of the support platform 305 corresponding to the first fixing block 306 to cooperate with it.

[0025] The top surface of the support platform 305 has a through hole 9, and a photoelectric sensor 10 is fixed on the cylinder mounting base 301 at the corresponding through hole 9. The photoelectric sensor 10 is used to sense the presence of material.

[0026] After the battery cell 8 is transported to the battery cell pre-stacking position 2 via the stepping line 1, the photoelectric sensor 10 can sense whether the battery cell 8 is in place and has material. Then, the first cylinder 302 lifts the battery cell 8 and moves it out of the stepping line 1. Then, the second cylinder 303 drives the first fixing block 306 to cooperate with the second fixing block 307 on the top of the support platform 305 to achieve relative clamping of the battery cell 8.

[0027] For the translation and lifting of the battery cell 8, the translation component 4 includes a slide table 401, a slide rail 402, a slider 403, a third cylinder 404, a slider bracket 405, and a top plate 406. The slide rail 402 is in the same direction as the conveying direction of the stepping line 1 and is fixed to the top of the slide table 401. The slider 403 is slidably connected to the slide rail 402, and its top is connected and fixed to the top plate 406 through the slider bracket 405. The third cylinder 404 is fixed on the outside of the belt conveyor line, and its output end is connected and fixed to the slider bracket 405. One end of the top plate 406 is exposed to the slide rail 402, and a downward mounting plate 407 is fixed to the exposed end. The lifting component 5 is connected and fixed to the downward mounting plate 407.

[0028] The length of the slide rail 402 can correspond to each of the pre-stacked positions 2 of the battery cells; the slider bracket 405 has a limit block 11 protruding at one end away from the lifting member 5, and the top of the slide table 401 has hard limiters 12 fixed at both ends of the corresponding slide rail 402, and the limit block 11 can abut against the two hard limiters 12.

[0029] After the third cylinder 404 outputs, it can drive the slider bracket 405 to slide along the slide rail 402, thereby realizing the servo displacement of the subsequent lifting component 5 in the conveying direction of the stepping line 1, so as to correspond to the battery cells 8 of the multiple battery cell pre-stack positions 2.

[0030] Similarly, the lifting component 5 includes a cylinder adjusting plate 501 and a fourth cylinder 502. The downward mounting plate 407 is vertically installed and has multiple adjusting holes 503 evenly spaced along its height. The pneumatic rod adjusting plate is bolted into the adjusting holes 503. The fourth cylinder 502 is connected and fixed to the bottom of the cylinder adjusting plate 501, and its output end is connected and fixed to the center of the positioning plate 6. A downward pressing block 13 is also fixed to the bottom center of the positioning plate 6, and a downward pressing suction cup 14 is fixed to the bottom of the downward pressing block 13. The downward pressing suction cup 14 is flush with the vacuum suction cup 7.

[0031] In the actual stacking process, multiple pre-stacked cell positions 2 are grouped in pairs to stack external cells in pairs. The corresponding stepping line 1 includes at least one unloading position 15 corresponding to each pre-stacked cell position 2. Taking two pre-stacked cell positions 2 as an example, a cell 8 positioning mechanism is arranged at each pre-stacked cell position 1 and pre-stacked cell position 2. The cell 8 is conveyed to pre-stacked cell position 1 and pre-stacked cell position 2 on the stepping line 1. The upper surface of the cell 8 at pre-stacked cell position 1 is generally covered with adhesive. The positioning component 3 lifts the cell 8, removes it from the stepping line 1, clamps and positions the cell 8, and then releases it. After the translation component 4 moves the lifting component 5, the vacuum suction cup 7 picks up the battery cell 8 at the second pre-stacking position of the battery cell, and then the lifting component 5 rises. The translation component 4 transfers the battery cell 8 to the first pre-stacking position of the battery cell. The lifting component 5 descends simultaneously, stacking the battery cell 8 at the second pre-stacking position of the original battery cell with the battery cell 8 at the first pre-stacking position of the original battery cell. The pressing block 13 and the pressing suction cup 14 at its bottom can press the two battery cells 8 together. After the vacuum suction cup 7 breaks the vacuum, the pre-stacking action is completed.

[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A lithium battery module pre-stacking mechanism comprising a step line, characterized in that: The stepping line includes at least two pre-stacked cell positions along its transport direction, and a positioning component is fixed at the bottom of each pre-stacked cell position. The positioning component is used to lift and clamp the corresponding cell at the pre-stacked cell position. External cells are transported to each pre-stacked cell position through the stepping line. The bottom of the stepping line is also provided with a translation component, a lifting component, and a positioning plate. The translation component pneumatically drives the lifting component to move along the transport direction of the stepping line. The lifting component is used to servo drive the positioning plate to move in a direction perpendicular to the stepping line. Vacuum suction cups are fixed at the four corners of the bottom of the positioning plate to adsorb the cells.

2. The lithium battery module pre-stacking mechanism of claim 1, wherein: The positioning component includes a cylinder mounting base, a first cylinder, a second cylinder, a cylinder connecting plate, and a support platform. The first cylinder is fixedly connected to the side end of the stepper line via the cylinder mounting base, and its output end is fixedly connected to the support platform. The support platform is parallel to the external battery cell, and its bottom is fixedly connected to the second cylinder. The output end of the second cylinder is exposed on the support platform. A first fixing block is connected to the support platform at the same position via the cylinder connecting plate. The first fixing block is perpendicular to the top of the support platform and is located on the side of the support platform corresponding to the stepper line's feeding direction. A second fixing block is provided on the opposite end of the support platform corresponding to the first fixing block to cooperate with it.

3. The lithium battery module pre-stacking mechanism of claim 2, wherein: The top surface of the support platform has a through hole, and a photoelectric sensor is fixed on the cylinder mounting base at the corresponding through hole. The photoelectric sensor is used to sense the presence of material.

4. The lithium battery module pre-stacking mechanism of claim 1, wherein: Multiple cell pre-stack positions are grouped in pairs to stack external cells in pairs.

5. The lithium battery module pre-stacking mechanism of claim 1, wherein: The stepping line includes at least one unloading position corresponding to each cell pre-stacking position.

6. The lithium battery module pre-stacking mechanism of claim 1, wherein: The translation component includes a slide table, a slide rail, a slider, a third cylinder, a slider bracket, and a top plate. The slide rail is in the same direction as the conveyor belt and is fixed to the top of the slide table. The slider is slidably connected to the slide rail, and its top is connected and fixed to the top plate through the slider bracket. The third cylinder is fixed to the outside of the belt conveyor and its output end is connected and fixed to the slider bracket. One end of the top plate is exposed to the slide rail, and a downward mounting plate is fixed to the exposed end. The lifting component is connected and fixed to the downward mounting plate.

7. The lithium battery module pre-stacking mechanism of claim 6, wherein: The length of the slide rail can correspond to each of the pre-stacked positions of the battery cells.

8. The lithium battery module pre-stacking mechanism of claim 6, wherein: The slider bracket has a limit block protruding at the end away from the lifting component, and the top of the slide table has hard limiters fixed at both ends of the corresponding slide rail. The limit block can abut against the two hard limiters.

9. The lithium battery module pre-stacking mechanism of claim 1, wherein: The lifting component includes a cylinder adjusting plate and a fourth cylinder. The lower mounting plate is installed vertically and has multiple adjusting holes equidistantly spaced along its height. The cylinder adjusting plate is bolted into the adjusting holes. The fourth cylinder is connected and fixed to the bottom of the cylinder adjusting plate, and its output end is connected and fixed to the center of the positioning plate.

10. The lithium battery module pre-stacking mechanism of claim 1, wherein: A pressing block is fixed at the bottom center of the positioning plate, and a pressing suction cup is fixed at the bottom of the pressing block. The pressing suction cup is flush with the vacuum suction cup.

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