CN110197885B - Lithium battery diaphragm cutting device - Google Patents
Lithium battery diaphragm cutting device Download PDFInfo
- Publication number
- CN110197885B CN110197885B CN201910531759.5A CN201910531759A CN110197885B CN 110197885 B CN110197885 B CN 110197885B CN 201910531759 A CN201910531759 A CN 201910531759A CN 110197885 B CN110197885 B CN 110197885B
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- Prior art keywords
- diaphragm
- driving
- lithium battery
- bearing block
- driving device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/065—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
Abstract
The invention discloses a lithium battery diaphragm cutting device, comprising: the three-station winding head comprises three membrane top plates which are arranged in a regular triangle shape and three winding needles which are respectively arranged at the top points of the membrane top plates, wherein one membrane top plate is right opposite to the upper membrane pressure roller, the cutter and the lower membrane pressure roller, the first driving device is used for driving the upper membrane pressure roller to move towards the membrane top plates, the third driving device is used for driving the lower membrane pressure roller to move towards the membrane top plates so as to press the membranes on the surfaces of the membrane top plates, the second driving device is used for driving the cutter to move towards the membrane top plates so as to cut the membranes pressed on the membrane top plates, and the membranes can be smoothly cut through the clamping of the upper membrane pressure roller and the lower membrane pressure roller.
Description
Technical Field
The invention relates to the technical field of lithium battery cell winding equipment, in particular to a lithium battery diaphragm cutting device.
Background
High-speed film-making and winding integrated equipment for cylindrical lithium batteries is equipment for film-making and winding of battery cores. The battery core is provided with four layers of materials, namely a negative electrode, a diaphragm, a positive electrode and the diaphragm, which are superposed together to complete winding.
The existing lithium battery core winding equipment adopts a three-station winding head, three groups of winding needles and three groups of diaphragm top plates are uniformly distributed at 120 degrees, and the winding head rotates anticlockwise to circularly wind the battery core. The battery core finishes winding at the station 1 and turns to the station 2 after cutting off the positive and negative pole pieces, because the diaphragm is not cut off, the diaphragm can be pulled out by the battery core and is laminated on the diaphragm roof, and because the negative pole outsourcing technology is adopted, the diaphragm cutting device needs to have a longer distance from the winding head, so as to conveniently blow the tail section of the negative pole piece away from the diaphragm and laminate on the negative pole supporting plate, and meanwhile, the distance between the corresponding negative pole piece entering supporting plate and the negative pole ending air blowing device and the winding head also needs to be increased.
Therefore, how to provide a device capable of smoothly cutting the lithium battery diaphragm is a technical problem which needs to be solved by the technical personnel in the field at present.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a lithium battery separator cutting device, which can smoothly cut off a separator after a battery cell is wound.
In order to achieve the purpose, the invention provides the following technical scheme:
a lithium battery separator cutting device comprising: three station coiling heads, first drive arrangement, go up the diaphragm compression roller, second drive arrangement, cutter, third drive arrangement, diaphragm compression roller down, three station coiling heads include that three are the diaphragm roof and three that regular triangle arranged and set up respectively the book needle of diaphragm roof apex department, one of them the diaphragm roof is just right go up the diaphragm compression roller the cutter with diaphragm compression roller down, first drive arrangement is used for the drive go up the diaphragm compression roller orientation the diaphragm roof removes, third drive arrangement is used for the drive the diaphragm compression roller orientation down the diaphragm roof removes to compress tightly the diaphragm roof is surperficial, second drive arrangement is used for the drive the cutter orientation the diaphragm roof removes to cut off and compress tightly diaphragm on the diaphragm roof.
Preferably, the device further comprises a negative pole piece inserting supporting plate fixedly connected with the telescopic end of the first driving device, and a vent hole is formed in the negative pole piece inserting supporting plate.
Preferably, the cathode tail gas blowing device is fixed at the telescopic end of the third driving device and used for attaching the tail piece of the cathode piece to the cathode tail piece supporting plate.
Preferably, the diaphragm pressing device further comprises a sliding rail and a bearing block, the bearing block is connected to the sliding rail in a sliding mode, a guide rod is connected to the bearing block in a penetrating and sliding mode, the upper diaphragm pressing roller is fixed to one end of the guide rod, a limiting block is arranged at the other end of the guide rod, a spring is sleeved on the guide rod, one end of the spring abuts against the bearing block, the other end of the spring abuts against one end, close to the upper diaphragm pressing roller, of the guide rod, and the first driving device is used for driving the bearing block to move on the sliding rail.
Preferably, the fixed end of the second driving device is fixed on the bearing block.
Preferably, the fixed end of the third driving device is fixed on the bearing block.
Preferably, the upper diaphragm pressing roller is connected with the bearing block in a sliding mode through a plurality of guide rods.
Compared with the prior art, the technical scheme has the following advantages:
according to the lithium battery diaphragm cutting device provided by the invention, the diaphragm can be smoothly cut by clamping the upper diaphragm pressing roller and the lower diaphragm pressing roller; when the first driving device drives the bearing block to move, the second driving device and the third driving device can also move along with the bearing block, so that the running speed of the mechanism can be improved, the distance between the diaphragm cutting device and the three-station winding head is increased, the tail piece of the negative pole piece can be smoothly attached to the negative pole piece supporting plate, the tail piece of the negative pole piece can be prevented from being damaged, and the yield of the battery cell is improved; in addition, the negative plate feeding supporting plate is integrated on the first driving device, a driving mechanism of the negative plate feeding supporting plate is omitted, the negative end air blowing device is integrated on the third driving device, a driving mechanism of the negative end air blowing device which is driven independently is also omitted, and the structure is simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic top view of a lithium battery separator cutting device according to an embodiment of the present invention;
fig. 2 is a left side view schematically illustrating a lithium battery separator cutting device according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of Z-Z of FIG. 2;
fig. 4 is a schematic structural diagram of a lithium battery separator cutting device according to an embodiment of the present invention when a lower separator pressing roller is extended;
fig. 5 is a schematic structural view illustrating an upper separator pressing roller of a lithium battery separator cutting apparatus according to an embodiment of the present invention when it is extended;
fig. 6 is a schematic structural diagram of a lithium battery separator cutting device according to an embodiment of the present invention when a cutting knife is extended;
fig. 7 is a schematic structural view illustrating a lower separator pressing roller of a lithium battery separator cutting apparatus according to an embodiment of the present invention when retracted.
The reference numbers are as follows:
the device comprises a first driving device 1, a limiting block 2, a second driving device 3, a guide rod 4, a spring 5, a cutter 6, a negative pole piece feeding supporting plate 7, an upper diaphragm pressing roller 8, a lower diaphragm pressing roller 9, a negative pole ending air blowing device 10, a third driving device 11, a sliding block 12, a bearing block 13, a sliding rail 14, a negative pole piece 15, a first diaphragm 16, a positive pole piece 17, a second diaphragm 18, a first winding needle 19, a third winding needle 20, an electric core 21, a second winding needle 22, a diaphragm top plate 23 and a negative pole piece supporting plate 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 7, fig. 1 is a schematic top view of a lithium battery separator cutting device according to an embodiment of the present invention; fig. 2 is a left side view schematically illustrating a lithium battery separator cutting device according to an embodiment of the present invention; FIG. 3 is a schematic cross-sectional view of Z-Z of FIG. 2; fig. 4 is a schematic structural diagram of a lithium battery separator cutting device according to an embodiment of the present invention when a lower separator pressing roller is extended; fig. 5 is a schematic structural view illustrating an upper separator pressing roller of a lithium battery separator cutting apparatus according to an embodiment of the present invention when it is extended; fig. 6 is a schematic structural diagram of a lithium battery separator cutting device according to an embodiment of the present invention when a cutting knife is extended; fig. 7 is a schematic structural view illustrating a lower separator pressing roller of a lithium battery separator cutting apparatus according to an embodiment of the present invention when retracted.
The lithium battery diaphragm cutting device provided by the embodiment of the invention comprises: the device comprises a three-station winding head, a first driving device 1, an upper diaphragm pressing roller 8, a second driving device 3, a cutter 6, a third driving device 11 and a lower diaphragm pressing roller 9. The three-station winding head comprises three diaphragm top plates 23 which are arranged in a regular triangle and three winding needles which are respectively arranged at the top points of the diaphragm top plates 23, the winding needles are sequentially marked as a first winding needle 19, a second winding needle 22 and a third winding needle 20 from the upper part of the three-station winding head in the anticlockwise direction, the stations are sequentially marked as a first station, a second station and a third station from the upper part of the three-station winding head in the anticlockwise direction, one of the diaphragm top plates 23 is over against an upper diaphragm pressing roller 8, a cutter 6 and a lower diaphragm pressing roller 9, namely the diaphragm top plate 23 between the first station and the second station, and the first driving device 1, the second driving device 3 and the third driving device 11 preferably adopt cylinders capable of outputting linear displacement. In specific application, after the battery cell 21 is wound at the first station, the positive plate 17 and the negative plate 15 are cut off, and the three-station winding head rotates anticlockwise by 120 degrees to enable the battery cell 21 to reach the second station; then the telescopic end of the third driving device 11 extends out to push out the lower diaphragm pressing roller 9 until the lower diaphragm pressing roller 9 presses the bottom of the diaphragm on the diaphragm top plate 23; then the telescopic end of the first driving device 1 extends out to push the upper diaphragm pressing roller 8 out until the upper diaphragm pressing roller 8 presses the upper part of the diaphragm on the diaphragm top plate 23; then, the cutting knife 6 is driven by the second driving device 3 to move towards the diaphragm pressed on the diaphragm top plate 23, and the cutting knife 6 is driven to return after the diaphragm is cut off; and finally, retracting the lower diaphragm pressing roller 9, starting to finish the ending of the battery core 21 at the second station, winding the first diaphragm 16, the second diaphragm 18 and the negative plate 15 connected with the battery core 21 into the battery core 21, finishing the pre-winding of the first winding needle 19 at the first station, winding the cut upper parts of the first diaphragm 16 and the second diaphragm 18 into the first winding needle 19, and finally, pulling the upper diaphragm pressing roller 8 back to the initial position to finish the diaphragm cutting operation. When the three-station winding head rotates the battery cell 21 which finishes winding at the first station to the second station, the diaphragm can be smoothly cut through the clamping of the upper diaphragm pressing roller 8 and the lower diaphragm pressing roller 9.
Further, the winding device further comprises a negative pole piece feeding supporting plate 7 fixedly connected with the telescopic end of the first driving device 1, wherein a vent hole is formed in the negative pole piece feeding supporting plate 7, gas can be blown out of the vent hole through a gas supply device, and when the next battery cell 21 is wound at the beginning of a station, the auxiliary supporting effect is achieved when the negative pole piece 15 is inserted into the battery cell 21. The negative plate 15 feeding supporting plate is integrated on the first driving device 1, so that a driving mechanism of the negative plate 15 feeding supporting plate is omitted, and a winding structure is simplified.
Furthermore, the cathode tail gas blowing device 10 is preferably a gas blowing rod, the cathode tail gas blowing device 10 is fixed at the telescopic end of the third driving device 11, the cathode tail gas blowing device 10 is used for attaching the tail piece of the cathode piece 15 to the cathode tail piece supporting plate 24, namely when the lower diaphragm pressing roller 9 is pressed on the diaphragm top plate 23, the cathode tail gas blowing device 10 is also pushed out and blows gas, so that the tail piece of the cathode piece 15 of the battery cell 21 is attached to the cathode tail piece supporting plate 24, the cathode piece 15 is prevented from being cut when the diaphragm is cut by the cutter 6, after the diaphragm is cut, the lower diaphragm pressing roller 9 and the cathode tail gas blowing device 10 are retracted, and the battery cells 21 at the second station begin to end up and the first diaphragm 16, the second diaphragm 18 and the cathode piece 15 connected with the battery cell 21 are involved into the battery cell 21. By integrating the cathode end air blowing device 10 on the third driving device 11, an independent driving mechanism is also omitted, and the winding structure is further simplified.
In order to facilitate the movement of the upper diaphragm pressing roller 8, the lower diaphragm pressing roller 9 and the cutter 6, in this embodiment, the present invention further includes a slide rail 14 and a bearing block 13, the bearing block 13 is slidably connected to the slide rail 14, specifically, slidably connected to the slide rail 14 through a slider 12, the bearing block 13 is fixedly connected to the slider 12, and the bearing block 13 is inserted with a guide rod 4 in a sliding manner, wherein in order to improve the sliding stability of the bearing block 13, a plurality of guide rods 4 are slidably connected to the bearing block 13, the upper diaphragm pressing roller 8 is fixed to one end of the guide rod 4, the other end of the guide rod 4 is provided with a stopper 2, the guide rod 4 is sleeved with a spring 5, one end of the spring 5 abuts against the bearing block 13, and the other end abuts against one end of the guide rod 4 close to the upper diaphragm pressing roller 8, that is, when the upper diaphragm pressing roller 8 does not press the diaphragm against the diaphragm top plate 23, the guide rod 4 is subjected to a rightward elastic force of the spring 5, the limiting block 2 can limit the guide rod 4 from sliding out of the bearing block 13, and the first driving device 1 is used for driving the bearing block 13 to move on the sliding rail 14.
In particular, the fixed end of the second driving device 3 is fixed on the bearing block 13, and the fixed end of the third driving device 11 is fixed on the bearing block 13. When first drive arrangement 1 drive carrier block 13 removed promptly, second drive arrangement 3 and third drive arrangement 11 also can follow the removal, consequently can improve the functioning speed of mechanism, draw big diaphragm cutting device and three station winding head distances simultaneously, guarantee that the 15 tails of negative pole piece can laminate to negative pole tail piece layer board 24 smoothly on to guarantee that the 15 tails of negative pole piece can not receive the damage, and then improve electric core 21's yields.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The lithium battery diaphragm cutting device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. A lithium battery separator cutting device, comprising: the three-station winding head comprises three diaphragm top plates which are arranged in a regular triangle shape and three winding needles which are respectively arranged at the top points of the diaphragm top plates, wherein one diaphragm top plate is over against the upper diaphragm pressure roller, the cutter and the lower diaphragm pressure roller, the first driving device is used for driving the upper diaphragm pressure roller to move towards the diaphragm top plate, the third driving device is used for driving the lower diaphragm pressure roller to move towards the diaphragm top plate so as to press a diaphragm on the surface of the diaphragm top plate, and the second driving device is used for driving the cutter to move towards the diaphragm top plate so as to cut off the diaphragm pressed on the diaphragm top plate;
the diaphragm pressing roller device is characterized by further comprising a sliding rail and a bearing block, the bearing block is connected to the sliding rail in a sliding mode, a guide rod penetrates through the bearing block in a sliding mode, the upper diaphragm pressing roller is fixed to one end of the guide rod, a limiting block is arranged at the other end of the guide rod, a spring is sleeved on the guide rod, one end of the spring is abutted to the bearing block, the other end of the spring is abutted to one end, close to the upper diaphragm pressing roller, of the guide rod, and the first driving device is used for driving the bearing block to move on the sliding rail.
2. The lithium battery diaphragm cutting device of claim 1, further comprising a negative electrode lead-in supporting plate fixedly connected with the telescopic end of the first driving device, wherein the negative electrode lead-in supporting plate is provided with a vent hole.
3. The lithium battery diaphragm cutting device according to claim 1, further comprising a negative electrode tail sheet supporting plate and a negative electrode ending air blowing device, wherein the negative electrode ending air blowing device is fixed at the telescopic end of the third driving device and is used for attaching a tail sheet of a negative electrode sheet to the negative electrode tail sheet supporting plate.
4. The lithium battery separator cutting device according to claim 1, wherein a fixed end of the second driving means is fixed to the bearing block.
5. The lithium battery separator cutting device of claim 1, wherein a fixed end of the third driving means is fixed to the carrier block.
6. The lithium battery separator cutting device as claimed in claim 1, wherein the upper separator pressing roller is slidably coupled to the carrier block through a plurality of guide rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910531759.5A CN110197885B (en) | 2019-06-19 | 2019-06-19 | Lithium battery diaphragm cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910531759.5A CN110197885B (en) | 2019-06-19 | 2019-06-19 | Lithium battery diaphragm cutting device |
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| Publication Number | Publication Date |
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| CN110197885A CN110197885A (en) | 2019-09-03 |
| CN110197885B true CN110197885B (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910531759.5A Active CN110197885B (en) | 2019-06-19 | 2019-06-19 | Lithium battery diaphragm cutting device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112510321B (en) * | 2020-12-02 | 2022-06-21 | 江西量子新能源科技有限公司 | Lithium ion battery diaphragm cuts off positioner |
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| CN110197885A (en) | 2019-09-03 |
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