CN107834094B - Battery cell auxiliary blanking forming device and method - Google Patents
Battery cell auxiliary blanking forming device and method Download PDFInfo
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- CN107834094B CN107834094B CN201711054154.9A CN201711054154A CN107834094B CN 107834094 B CN107834094 B CN 107834094B CN 201711054154 A CN201711054154 A CN 201711054154A CN 107834094 B CN107834094 B CN 107834094B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 34
- 238000003825 pressing Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a battery cell auxiliary blanking forming device and a method, wherein a bare battery cell is wound on a winding needle, the battery cell auxiliary blanking forming device comprises a blanking movable platform, a first positioning mechanism and a second positioning mechanism, the blanking movable platform is slidably arranged below the winding needle, the first positioning mechanism is used for positioning the bottom of the inside of the bare battery cell, the second positioning mechanism is used for positioning the two sides of the outside of the bare battery cell, the axis of the winding needle extends along the front-back direction, the first positioning mechanism is slidably arranged on the blanking movable platform along the front-back direction and the up-down direction, and the second positioning mechanism is slidably arranged on the blanking movable platform along the left-right direction. The auxiliary blanking forming device and the forming method for the battery cell are simple, accurate positioning control of the battery cell can be realized when the battery cell is automatically blanked, shrinkage deformation of the battery cell to the inner space of the battery cell can be prevented, the purpose of controlling the pole piece to avoid displacement is achieved, and therefore the quality of the battery cell can be improved.
Description
Technical Field
The invention relates to the technical field of battery production and manufacturing, in particular to an auxiliary blanking forming device and method for a battery cell.
Background
In the field of domestic battery manufacturing, the battery cell of the battery comprises a diaphragm and a pole piece, and the pole piece and the diaphragm are wound into a diamond-shaped battery cell by adopting a diamond-shaped winding needle. When the battery core after winding is completed, the diamond-shaped bare battery core separated from the winding needle is in a free state, the blanking manipulator is free of positioning control when automatic blanking is realized, the battery core can shrink and deform to the inner space, the deformation has a certain influence on the position of the tab, and meanwhile, certain displacement is generated on the tab, so that the quality of the battery core is reduced.
Disclosure of Invention
The invention aims to provide an auxiliary blanking forming device for a battery cell, aiming at the problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a supplementary unloading shaper of electricity core, naked electric core is convoluteed on the book needle, and supplementary unloading shaper of electricity core is including setting up with sliding the unloading movable platform of book needle below, be used for right the inside of naked electric core bottom is fixed a position the first positioning mechanism and be used for right the outside both sides of naked electric core are fixed a position the second positioning mechanism, the axis of book needle extends along the fore-and-aft direction, first positioning mechanism can be followed fore-and-aft and upper and lower direction and slidingly set up on the unloading movable platform, second positioning mechanism can be followed left-and-right direction and slidingly set up on the unloading movable platform.
Preferably, the first positioning mechanism comprises a pressing rod which can be arranged on the blanking movable platform in a sliding manner along the front-back direction and the up-down direction, the winding needle is provided with a position avoidance groove matched with the pressing rod, and when the bare cell is positioned by the first positioning mechanism, the pressing rod is positioned in the position avoidance groove and compresses the bottom of the bare cell on the blanking movable platform.
Preferably, the second positioning mechanism comprises two clamping plates, at least one of the two clamping plates can be slidably arranged on the blanking movable platform, the two clamping plates are oppositely arranged, and when the bare cell is positioned through the second positioning mechanism, the two clamping plates are respectively propped against two opposite sides of the bare cell.
Further, the two clamping plates can be arranged on the blanking movable platform in a sliding manner, the sliding directions of the two clamping plates are opposite, and when the bare cell is positioned through the second positioning mechanism, the two clamping plates synchronously slide to be close to each other; when the second positioning mechanism is withdrawn from positioning the bare cell, the two clamping plates synchronously slide away from each other.
Further, each clamping plate comprises a clamping part for clamping the bare cell, the cross section of the clamping part is in a V shape, and when the bare cell is positioned through the second positioning mechanism, two sides of the V shape of the clamping part are propped against the bare cell.
Preferably, the auxiliary blanking forming device for the battery core further comprises a third positioning mechanism which is arranged at the pre-forming station and used for pre-pressing and positioning the bare battery core before pre-pressing the square bare battery core, the third positioning mechanism comprises a positioning clamp, the positioning clamp can be arranged above the bare battery core in a sliding manner along the up-down direction, and when the pre-pressing and positioning are performed on the bare battery core through the third positioning mechanism, the positioning clamp is pressed and arranged in the middle of the top of the bare battery core.
Further, the auxiliary blanking forming device of the battery core further comprises a preforming device which is arranged at the preforming station and used for prepressing the bare battery core into a square structure, the preforming device comprises a preforming clamp which is used for pressing the bare battery core into the square structure, and the preforming clamp can be arranged on two opposite sides of the positioning clamp in an up-down lifting mode respectively.
Preferably, the auxiliary blanking forming device for the battery cell further comprises a conveying belt arranged on the blanking movable platform, and the bare battery cell is fixed on the conveying belt through the first positioning mechanism and the second positioning mechanism.
Preferably, the winding needle is an elliptic winding needle.
The invention also provides a battery cell auxiliary blanking forming method, which comprises the following steps:
(1) Winding the pole piece or the diaphragm on a winding needle to form a bare cell;
(2) Sequentially positioning the bottom and the two outer sides of the inside of the bare cell;
(3) Retracting the winding needle to withdraw from the positioned bare cell;
(4) Carrying the bare cell to a preforming station;
(5) Pressing the middle part of the top of the bare cell to position the bare cell again;
(6) Withdrawing the positioning of the bare cell in the step (2);
(7) And prepressing the bare cell to form a square bare cell.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the auxiliary blanking forming device and the forming method for the battery cells are simple, can realize accurate positioning control on the battery cells during automatic blanking of the battery cells, and can prevent the battery cells from shrinking and deforming to the inner space of the battery cells so as to achieve the purpose of controlling the pole pieces to avoid displacement, thereby improving the quality of the battery cells.
Drawings
FIG. 1 is a schematic diagram of the structure and operation principle of the auxiliary blanking forming device for the battery cell;
FIG. 2 is a second schematic diagram of the structure and operation principle of the auxiliary blanking forming device for battery cells of the present invention;
FIG. 3 is a top view of the cell assisted blanking apparatus of the present invention in the state shown in FIG. 2;
FIG. 4 is a third schematic diagram of the structure and operation principle of the auxiliary blanking forming device for the battery cell of the present invention;
FIG. 5 is an isometric view of the cell assisted blanking apparatus of the present invention in the state shown in FIG. 3;
FIG. 6 is a schematic diagram of the structure and operation principle of the auxiliary blanking forming device for the battery cell of the present invention;
FIG. 7 is a schematic diagram showing the structure and operation principle of the auxiliary blanking forming device for the battery cell;
fig. 8 is an isometric view of the cell-assisted blanking apparatus of the present invention in the state shown in fig. 7.
Wherein: 1. a blanking movable platform; 11. a conveyor belt; 2. a first positioning mechanism; 21. a compression bar; 3. a second positioning mechanism; 31. a clamping plate; 311. a clamping part; 4. a third positioning mechanism; 100. a winding needle; 200. bare cell.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 8, the battery cell auxiliary blanking forming device comprises a blanking movable platform 1, a first positioning mechanism 2 arranged on the blanking movable platform 1 and a second positioning mechanism 3 arranged on the blanking movable platform.
The blanking movable platform 1 is arranged below the winding needle 100, the axis of the winding needle 100 extends along the front-back direction (Z direction shown in the figure), the blanking movable platform 1 can be slidably arranged along the left-right direction (X direction shown in the figure) and the up-down direction (Y direction shown in the figure), the first positioning mechanism 2 is used for positioning the bottom of the inside of the bare cell 200, the first positioning mechanism 2 can be slidably arranged on the blanking movable platform 1 along the front-back direction and the up-down direction, the second positioning mechanism 3 is used for positioning the two sides of the outside of the bare cell 200, and the second positioning mechanism 3 can be slidably arranged on the blanking movable platform 1 along the left-right direction.
The first positioning mechanism 2 includes a pressing lever 21, the pressing lever 21 extends in the front-rear direction, and the pressing lever 21 is slidably disposed on the blanking movable platform 1 in the front-rear and up-down directions. When the bare cell 200 is positioned by the first positioning mechanism 2, the compression bar 21 moves in the front-back direction to extend into the bare cell 200 and moves downwards, so that the bottom of the bare cell 200 is pressed on the blanking movable platform 1. Thus, when the winding needle 100 is retracted from the bare cell 200, the bare cell 200 can be prevented from shrinking and deforming to the inner space of the bare cell 200, and the problem of core pulling of the pole piece or the diaphragm can be prevented when the winding needle 100 is pulled out from the bare cell 200.
In this embodiment, the winding needle 100 is provided with a position avoiding groove matched with the pressing rod 21, and when the bare cell 200 is positioned by the first positioning mechanism 2, the pressing rod 21 is pressed in the position avoiding groove.
The second positioning mechanism 3 includes two clamping plates 31 which are oppositely arranged, and at least one clamping plate 31 of the two clamping plates 31 can be arranged on the blanking movable platform 1 in a sliding manner along the left-right direction. Preferably, both the clamping plates 31 are slidably provided in the left-right direction, and both the clamping plates 31 are slid in synchronization. When the bare cell 200 is positioned by the second positioning mechanism 3, the two clamping plates 31 slide synchronously and oppositely to approach to each other until the two clamping plates 31 are respectively propped against two opposite sides of the bare cell 200; when the second positioning mechanism 3 is withdrawn from positioning the bare cell 200, the two clamping plates 31 slide away from each other in synchronization. Through the setting of second positioning mechanism 3, can control the position of naked electric core 200, prevent naked electric core to the interior space produce shrinkage deformation, reach the control pole piece and avoid producing the displacement to improve electric core quality.
Each clamping plate 31 includes a clamping portion 311 for clamping the bare cell 200, in this embodiment, the cross section of the clamping portion 311 is V-shaped, and when the bare cell 200 is positioned by the second positioning mechanism 3, two sides of the V-shaped structure of the clamping portion 311 are all propped against the bare cell 200, so that the second positioning mechanism 3 can position the bare cell 200 more accurately and reliably.
The auxiliary blanking forming device for the battery cell further comprises a third positioning mechanism 4 arranged at the preforming station, wherein the third positioning mechanism 4 is used for positioning the bare cell 200 again before the bare cell 200 is pressed into the square structure. Specifically, the third positioning mechanism 4 includes a positioning clamp, the positioning clamp can be slidably disposed above the bare cell 200 along the up-down direction, the third positioning mechanism 4 further includes a first cylinder driving the positioning clamp to move up and down, and when the bare cell 200 is positioned by the third positioning mechanism, the positioning clamp is pressed in the middle of the top of the bare cell 200.
The auxiliary blanking forming device for the battery cell further comprises a preforming device arranged at the preforming station, the preforming device comprises preforming clamps, the preforming clamps are respectively arranged on two opposite sides of the positioning clamp, and the preforming clamps positioned on the two opposite sides of the positioning clamp can be arranged above the bare battery cell 200 in a sliding manner along the up-down direction. The preforming device further comprises a second cylinder for driving the preforming clamp to move up and down.
The blanking movable platform 1 is further provided with a conveyor belt 11, the bare cell 200 is fixed on the conveyor belt 11 through the first positioning mechanism 2 and the second positioning mechanism 3, and the bare cell 200 with the prepressing square structure is also positioned on the conveyor belt 11, so that the prepressing square bare cell can be directly transmitted to the next station through the conveyor belt 11.
In this embodiment, the winding needle 100 is an elliptical winding needle, the bare cell 200 is elliptical, when the bare cell 200 is located on the blanking movable platform 1, the second positioning mechanism 3 clamps two sides of the elliptical bare cell in the major axis direction, the first positioning mechanism 2 is pressed at the lower end of the elliptical bare cell in the minor axis direction, and the third positioning mechanism 4 is pressed at the upper end of the elliptical bare cell in the minor axis direction.
The battery core auxiliary blanking forming method is specifically introduced as follows:
(1) Winding the pole piece or the diaphragm on the winding needle to form a bare cell 200, wherein in the embodiment, the bare cell 200 is an oval bare cell, and at this time, the blanking movable platform 1 is far away from the bare cell 200, as shown in fig. 1;
(2) Sequentially positioning the bottom and the two outer sides of the inside of the bare cell 200;
when the battery core auxiliary blanking forming device is used for positioning, the blanking movable platform 1 moves to the lower part of the bare battery core 200 along the X+ direction and the Y+ direction, so that the bottom of the bare battery core 200 is contacted with the blanking movable platform 1; then the compression bar 21 moves along the Z-direction to be inserted into the bare cell 200, and the compression bar 21 moves along the Y-direction to press the middle part of the bottom of the bare cell 200 on the blanking movable platform 1, and the compression bar 21 is positioned in the avoidance groove on the winding needle 100; finally, the two clamping plates 31 are synchronously moved towards each other along the X+ and X-directions to approach each other until the clamping plates 31 are abutted against the two opposite sides of the bare cell 200, as shown in fig. 2 and 3;
(3) Retracting the winding needle 100 to withdraw from the positioned bare cell 200;
(4) Transporting the bare cell 200 to a pre-forming station;
moving the blanking moving platform 1 away from the winding needle 100 in the Y-direction, and then moving the blanking moving platform 1 to the preforming station in the X-direction, as shown in fig. 4 and 5;
(5) Pressing the middle part of the top of the bare cell 200 to position the bare cell 200 again;
at the preforming station, the third positioning mechanism 4 acts, namely, the first cylinder is started, so that the positioning clamp moves downwards to press the middle part of the top of the bare cell 200, as shown in fig. 6, until the middle part of the top of the bare cell 200 is pressed down to the middle part close to the bottom of the bare cell 200;
(6) Withdrawing the positioning of the bare cell 200 in step (2);
at the preforming station, starting the first positioning mechanism 2 to enable the compression bar 21 to move along the Y+ direction, and enabling the compression bar 21 to move along the Z+ direction until the compression bar 21 withdraws from the inside of the bare cell 200; then the second positioning mechanism 3 acts to enable the clamping plates 31 at the two sides of the bare cell 200 to synchronously slide along the X-and X+ directions respectively and to be away from each other;
(7) The bare cell 200 is pre-pressed to form a square bare cell.
At the preforming station, a second cylinder is actuated which drives the preforming clips on both sides of the locating clip to move in the Y-direction to press both sides of the bare cell 200 until the bare cell is pre-pressed into a square configuration, as shown in fig. 7 and 8.
After the bare cell 200 is pre-pressed into a square structure through the steps, the conveyor belt 11 positioned on the blanking movable platform 1 is enabled to act, so that the pre-pressed square bare cell can be conveyed to the next station.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. Supplementary unloading shaper of electricity core, naked electric core winds on the needle of rolling up, its characterized in that: the battery cell auxiliary blanking forming device comprises a blanking movable platform, a first positioning mechanism and a second positioning mechanism, wherein the blanking movable platform can be arranged below the winding needle in a sliding manner, the first positioning mechanism is used for positioning the bottom of the inside of the bare battery cell, the second positioning mechanism is used for positioning the two sides of the outside of the bare battery cell, the axis of the winding needle extends along the front-back direction, the first positioning mechanism can be arranged on the blanking movable platform in a sliding manner along the front-back and up-down directions, the second positioning mechanism can be arranged on the blanking movable platform in a sliding manner along the left-right direction, the first positioning mechanism comprises a pressing rod which can be arranged on the blanking movable platform in a sliding manner along the front-back and up-down directions, the winding needle is provided with a position avoiding groove matched with the pressing rod, and when the bare battery cell is positioned through the first positioning mechanism, the pressing rod is positioned in the position avoiding groove and the bottom of the bare battery cell is pressed on the blanking movable platform;
the second positioning mechanism comprises two clamping plates, at least one of the two clamping plates can be arranged on the blanking movable platform in a sliding manner, the two clamping plates are arranged oppositely, and when the bare cell is positioned through the second positioning mechanism, the two clamping plates are respectively propped against two opposite sides of the bare cell; each clamping plate comprises a clamping part for clamping the bare cell, the cross section of the clamping part is in a V shape, and when the bare cell is positioned by the second positioning mechanism, two sides of the V shape of the clamping part are propped against the bare cell;
when the electric core assists in positioning a blanking forming device, the blanking movable platform moves to the position below the bare electric core, so that the bottom of the bare electric core is contacted with the blanking movable platform; then the compression bar is inserted into the bare cell in a moving way, and the compression bar is moved to press the middle part of the bottom of the bare cell on the blanking movable platform, so that the compression bar is positioned in the avoidance groove on the winding needle; and finally, enabling the two clamping plates to synchronously move in opposite directions to approach to each other until the clamping plates are propped against the two opposite sides of the bare cell.
2. The cell assisted blanking apparatus of claim 1, wherein: the two clamping plates can be arranged on the blanking movable platform in a sliding manner, the sliding directions of the two clamping plates are opposite, and when the bare cell is positioned through the second positioning mechanism, the two clamping plates synchronously slide to be close to each other; when the second positioning mechanism is withdrawn from positioning the bare cell, the two clamping plates synchronously slide away from each other.
3. The cell assisted blanking apparatus of claim 1, wherein: the auxiliary blanking forming device for the battery cells further comprises a third positioning mechanism which is arranged at the preforming station and used for pre-pressing and positioning the bare battery cells before the square bare battery cells are pre-pressed, the third positioning mechanism comprises a positioning clamp, the positioning clamp can be arranged above the bare battery cells in a sliding manner along the up-down direction, and when the pre-pressing and positioning are carried out on the bare battery cells through the third positioning mechanism, the positioning clamp is pressed and arranged in the middle of the top of the bare battery cells.
4. The cell assisted blanking apparatus of claim 3 in which: the auxiliary blanking forming device for the battery cells further comprises a preforming device which is arranged at the preforming station and used for prepressing the bare battery cells into a square structure, the preforming device comprises preforming clamps which press the bare battery cells into the square structure, and the preforming clamps can be arranged on two opposite sides of the positioning clamp in an up-down lifting manner respectively.
5. The cell assisted blanking apparatus of claim 1, wherein: the auxiliary blanking forming device for the battery cell further comprises a conveyor belt arranged on the blanking movable platform, and the bare battery cell is fixed on the conveyor belt through the first positioning mechanism and the second positioning mechanism.
6. The cell assisted blanking apparatus of claim 1, wherein: the winding needle is an elliptic winding needle.
7. A battery cell auxiliary blanking forming method is characterized in that: the blanking forming is performed by the battery cell auxiliary blanking forming device according to any one of claims 1 to 6, wherein the blanking forming method comprises the following steps:
(1) Winding the pole piece or the diaphragm on a winding needle to form a bare cell;
(2) Sequentially positioning the bottom and the two outer sides of the inside of the bare cell;
(3) Retracting the winding needle to withdraw from the positioned bare cell;
(4) Carrying the bare cell to a preforming station;
(5) Pressing the middle part of the top of the bare cell to position the bare cell again;
(6) Withdrawing the positioning of the bare cell in the step (2);
(7) And prepressing the bare cell to form a square bare cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711054154.9A CN107834094B (en) | 2017-10-31 | 2017-10-31 | Battery cell auxiliary blanking forming device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711054154.9A CN107834094B (en) | 2017-10-31 | 2017-10-31 | Battery cell auxiliary blanking forming device and method |
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| Publication Number | Publication Date |
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| CN107834094A CN107834094A (en) | 2018-03-23 |
| CN107834094B true CN107834094B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711054154.9A Active CN107834094B (en) | 2017-10-31 | 2017-10-31 | Battery cell auxiliary blanking forming device and method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428923B (en) * | 2018-05-15 | 2024-02-06 | 苏州迈展自动化科技有限公司 | Battery cell blanking forming device and battery cell blanking forming method |
| CN108832194B (en) * | 2018-07-12 | 2020-09-22 | 中航锂电技术研究院有限公司 | Winding needle for improving deformation of winding battery core and winding method |
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|---|---|
| CN107834094A (en) | 2018-03-23 |
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