CN112736295A - Unloading pre-compaction device and electricity core winder - Google Patents
Unloading pre-compaction device and electricity core winder Download PDFInfo
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- CN112736295A CN112736295A CN202110047085.9A CN202110047085A CN112736295A CN 112736295 A CN112736295 A CN 112736295A CN 202110047085 A CN202110047085 A CN 202110047085A CN 112736295 A CN112736295 A CN 112736295A
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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
- 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
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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
- H01M10/0468—Compression means for stacks of electrodes and separators
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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
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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
- 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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Abstract
The invention discloses a blanking prepressing device and an electric core winding machine, and relates to the technical field of electric core production. The blanking prepressing device comprises a first supporting mechanism, a second supporting mechanism and two clamping mechanisms. Fixture includes interior clip needle, and interior clip needle runs through electric core setting, and first supporting mechanism and second supporting mechanism set up relatively in the both ends of interior clip needle, and first supporting seat and second supporting seat are connected relatively in the both sides of two-way displacement subassembly, and first supporting seat is used for supporting with an interior clip needle and holds, and the second supporting seat is used for supporting with another interior clip needle and holds, and two-way displacement subassembly is used for driving first supporting seat and second supporting seat and keeps away from each other to two interior clip needles of promotion keep away from each other. The blanking prepressing device provided by the invention can avoid the inclination and deformation of the inner clamping needle, prevent the pole pieces and the diaphragms of the inner ring of the battery cell from being wrinkled, reduce the corner clearance of the battery cell, improve the uniformity of the corner clearance and ensure the quality of the battery cell.
Description
Technical Field
The invention relates to the technical field of battery core production, in particular to a blanking prepressing device and a battery core winding machine.
Background
At present, in the production process of a power lithium battery, blanking, prepressing and forming of a battery core are important parts in a battery core winding process. Most of the existing electric core winding machines adopt cantilever type inner clamping needles to clamp and discharge electric cores and pull the electric cores outwards so as to facilitate the prepressing procedure. However, the length of the cantilever type inner clamping needle is long, when the cantilever type inner clamping needle applies pulling force to the battery cell, the cantilever type inner clamping needle is easy to incline and deform due to insufficient rigidity, so that the pole piece and the diaphragm of the inner ring of the battery cell are wrinkled, the corner gap of the battery cell is too large, the corner gap is not uniform, and the like, the production quality of the battery cell is affected, and the yield is reduced.
In view of this, it is important to design and manufacture a blanking prepressing device and a core winder capable of ensuring the quality of a core, especially in the production of the core.
Disclosure of Invention
The invention aims to provide a blanking prepressing device which can avoid inclination and deformation of an inner clamping needle, prevent pole pieces and diaphragms of an inner ring of a battery cell from being wrinkled, reduce corner gaps of the battery cell, improve uniformity of the corner gaps and ensure quality of the battery cell.
Another object of the present invention is to provide an electrical core winding machine, which can avoid the inclination and deformation of the inner clamping pin, prevent the pole pieces and diaphragms of the inner ring of the electrical core from being wrinkled, reduce the corner gap of the electrical core, improve the uniformity of the corner gap, ensure the quality of the electrical core, and improve the yield.
The invention is realized by adopting the following technical scheme.
The utility model provides an unloading pre-compaction device, including first supporting mechanism, second supporting mechanism and two fixture, two fixture are used for carrying out the centre gripping to the both sides of electric core one-to-one, fixture includes interior clip needle, interior clip needle runs through electric core setting, first supporting mechanism and second supporting mechanism set up relatively in the both ends of interior clip needle, first supporting mechanism and second supporting mechanism all include first supporting seat, second supporting seat and two-way displacement subassembly, first supporting seat and second supporting seat connect relatively in the both sides of two-way displacement subassembly, first supporting seat is used for supporting with an interior clip needle, the second supporting seat is used for supporting with another interior clip needle, two-way displacement subassembly is used for driving first supporting seat and second supporting seat and keeps away from each other, keep away from each other with two interior clip needles in order to promote.
Optionally, first supporting seat and second supporting seat all set up between two interior clip needles, and two-way displacement subassembly still is used for driving first supporting seat and second supporting seat and is close to each other.
Optionally, the bidirectional displacement assembly includes a driving module and a base, the driving module is installed on the base and is connected with the first supporting seat and the second supporting seat respectively, and the first supporting seat and the second supporting seat are in sliding fit with the base.
Optionally, the driving module comprises a bidirectional screw rod, a first nut, a second nut and a driving motor, the driving motor is installed on the base and connected with the bidirectional screw rod, the first nut and the second nut are sleeved outside the bidirectional screw rod and are in threaded fit with the bidirectional screw rod, the thread turning directions of the first nut and the second nut are opposite, the first nut is fixedly connected with the first supporting seat, and the second nut is fixedly connected with the second supporting seat.
Optionally, the first supporting seat is provided with a sliding chute, the base is provided with a sliding guide rail, and the sliding guide rail is in sliding fit with the sliding chute.
Optionally, the first supporting seat includes a sliding portion and a supporting portion, the driving module is connected to the sliding portion, the sliding portion is fixedly connected to the supporting portion, the sliding groove is formed in the sliding portion, and the supporting portion is used for abutting against the inner clip.
Optionally, the clamping mechanism further comprises an outer clamping pin and a clamping seat, the outer clamping pin and the inner clamping pin are both mounted on the clamping seat, and the outer clamping pin can be close to or far away from the inner clamping pin so as to clamp or loosen the battery cell.
Optionally, unloading pre-compaction device still includes the belt and bears the mechanism, and the belt bears the mechanism and includes conveyer belt subassembly and lift cylinder, and the lift cylinder is connected with conveyer belt subassembly to drive conveyer belt subassembly and rise or descend, conveyer belt subassembly is used for bearing and carrying electric core.
Optionally, the blanking prepressing device further comprises a prepressing mechanism, the prepressing mechanism comprises a driving cylinder and a prepressing plate, and the driving cylinder is connected with the prepressing plate to drive the prepressing plate to prepress the electric core.
The utility model provides an electric core winder, including foretell unloading pre-compaction device, this unloading pre-compaction device includes first supporting mechanism, second supporting mechanism and two fixture, two fixture are used for carrying out the centre gripping to the both sides of electric core one-to-one, fixture includes interior clip, interior clip runs through the electric core setting, first supporting mechanism and second supporting mechanism set up relatively in the both ends of interior clip, first supporting mechanism and second supporting mechanism all include first supporting seat, second supporting seat and two-way displacement subassembly, first supporting seat and second supporting seat relative connection are in the both sides of two-way displacement subassembly, first supporting seat is used for supporting with an interior clip, the second supporting seat is used for supporting with another interior clip, two-way displacement subassembly is used for driving first supporting seat and second supporting seat and keeps away from each other, keep away from each other with two interior clips in order to promote.
The blanking prepressing device and the electric core winding machine provided by the invention have the following beneficial effects:
the blanking prepressing device provided by the invention is characterized in that two clamping mechanisms are used for clamping two sides of a battery cell in a one-to-one correspondence manner, each clamping mechanism comprises an inner clamping pin, the inner clamping pins penetrate through the battery cell, a first supporting mechanism and a second supporting mechanism are oppositely arranged at two ends of each inner clamping pin, each first supporting mechanism and each second supporting mechanism respectively comprise a first supporting seat, a second supporting seat and a bidirectional displacement assembly, the first supporting seat and the second supporting seat are oppositely connected to two sides of the bidirectional displacement assembly, the first supporting seat is used for abutting against one inner clamping pin, the second supporting seat is used for abutting against the other inner clamping pin, and the bidirectional displacement assembly is used for driving the first supporting seat and the second supporting seat to be away from each other so as to push the two inner clamping pins to be away from each other. Compared with the prior art, the blanking prepressing device provided by the invention adopts the first supporting mechanism and the second supporting mechanism which are oppositely arranged at the two ends of the inner clamping needle, so that the inner clamping needle can be prevented from inclining and deforming, pole pieces and diaphragms of an inner ring of a battery cell are prevented from being crumpled, a corner gap of the battery cell is reduced, the uniformity of the corner gap is improved, and the quality of the battery cell is ensured.
The electric core winding machine provided by the invention comprises the blanking prepressing device, can avoid the inclination and deformation of the inner clamping needle, prevent the pole piece and the diaphragm of the inner ring of the electric core from being wrinkled, reduce the corner clearance of the electric core, improve the uniformity of the corner clearance, ensure the quality of the electric core and improve the yield.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an electrical core winding machine according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a view angle of a blanking prepressing device provided in the embodiment of the present invention;
fig. 3 is a schematic structural view of another view of the blanking prepressing device provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a battery cell applied to the blanking prepressing apparatus provided in the embodiment of the present invention when the battery cell is deformed into a square shape;
fig. 5 is a schematic structural diagram of a first supporting mechanism in the blanking pre-pressing device according to the embodiment of the present invention;
fig. 6 is a schematic structural view illustrating the first supporting seat and the base in sliding fit in fig. 5.
Icon: 10-electric core winder; 100-a blanking prepressing device; 110-a first support mechanism; 111-a first support; 1111-chute; 1112-a slide; 1113-a support portion; 112-a second support seat; 113-a bi-directional displacement assembly; 114-a drive module; 1141-bidirectional screw rod; 1142-a first nut; 1143-a second nut; 1144-driving the motor; 115-a base; 1151-a slide guide track; 120-a second support mechanism; 130-a clamping mechanism; 131-an internal clamp pin; 132-external clamp needle; 133-a clamping seat; 140-a belt carrying mechanism; 141-a conveyor belt assembly; 142-a lifting cylinder; 150-a pre-pressing mechanism; 151-driving cylinder; 152-pre-pressing plate; 200-electric core; 210-a pole piece; 220-a membrane; 300-a winding device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, an embodiment of the invention provides an electrical core winding machine 10 for winding a production electrical core 200. It can avoid interior clip 131 to take place slope and warp, prevents that pole piece 210 and the diaphragm 220 of electric core 200 inner circle from crumpling, reduces electric core 200 corner clearance, improves the degree of consistency in corner clearance, guarantees electric core 200 quality, improves the yields.
Note that, the electric core winder 10 includes a winding device 300 and a blanking prepressing device 100. The winding device 300 is used for winding the pole piece 210 and the diaphragm 220 on a winding needle (not shown) to realize winding and molding of the battery cell 200. The blanking prepressing device 100 is used for clamping blanking and prepressing the battery cell 200, so as to perform the subsequent processes of the battery cell 200.
The blanking prepressing device 100 includes a first supporting mechanism 110, a second supporting mechanism 120, two clamping mechanisms 130, a belt bearing mechanism 140, and a prepressing mechanism 150. The two clamping mechanisms 130 can clamp two sides of the battery cell 200 in a one-to-one correspondence manner, and send the battery cell 200 to a position between the first supporting mechanism 110 and the second supporting mechanism 120, so as to implement the blanking operation of the battery cell 200; two fixture 130 can also keep away from each other to outwards pull open cylindric electric core 200, thereby draw cylindric electric core 200 squarely, realize electric core 200's plastic operation.
The gripper mechanism 130 includes an inner gripper pin 131, an outer gripper pin 132, and a gripper seat 133. The outer clamp pin 132 and the inner clamp pin 131 are both mounted on the clamping seat 133, and the outer clamp pin 132 can be close to or far away from the inner clamp pin 131 to clamp or unclamp the battery cell 200. In the process of clamping and blanking the battery cell 200 by the clamping mechanism 130, firstly, the clamping mechanism 130 is controlled to extend into the cylindrical battery cell 200, so that the inner clamping pin 131 is positioned at the inner side of the cylindrical battery cell 200, and the outer clamping pin 132 is positioned at the outer side of the cylindrical battery cell 200; then, the outer clamping pin 132 is controlled to be close to the inner clamping pin 131 so as to clamp the side wall of the battery cell 200; then, the clamping mechanism 130 drives the battery cell 200 to perform a blanking operation, and the battery cell 200 is sent between the first supporting mechanism 110 and the second supporting mechanism 120. Specifically, when the clamping mechanism 130 completes the clamping action on the battery cell 200, the inner clip 131 penetrates through the battery cell 200, the length of the inner clip 131 is greater than the depth of the cylindrical battery cell 200, and two ends of the inner clip 131 respectively extend out of two ends of the cylindrical battery cell 200.
Further, the first supporting mechanism 110 and the second supporting mechanism 120 are oppositely arranged at two ends of the inner clamping pin 131, the first supporting mechanism 110 is used for applying a supporting force to one end of the inner clamping pin 131 when the clamping mechanism 130 pulls the battery cell 200 open, the second supporting mechanism 120 is used for applying a supporting force to the other end of the inner clamping pin 131 when the clamping mechanism 130 pulls the battery cell 200 open, the first supporting mechanism 110 and the second supporting mechanism 120 jointly act to improve the supporting strength of the inner clamping pin 131, ensure that the inner clamping pin 131 outwards translates and pulls the battery cell 200 open, and avoid the inner clamping pin 131 from inclining and deforming, so that the pole piece 210 and the diaphragm 220 of the inner ring of the battery cell 200 are prevented from being wrinkled, the corner gap of the battery cell 200 is reduced, the uniformity of the corner gap is improved, and the quality of the battery cell 200 is ensured.
Specifically, the belt bearing mechanism 140 can lift and hold the battery cell 200 to support and bear the battery cell 200, and the belt bearing mechanism 140 can also convey the battery cell 200 outwards to feed the battery cell 200 into the next process. The pre-pressing mechanism 150 is used for pre-pressing the battery cell 200, the pre-pressing mechanism 150 can press the cylindrical battery cell 200 on the belt bearing mechanism 140, so that the cylindrical battery cell 200 is stretched and deformed towards two sides, and in the process, the first supporting mechanism 110 and the second supporting mechanism 120 drive the inner clamping needle 131 to move outwards, so that the cylindrical battery cell 200 is pulled towards two sides, and the battery cell 200 becomes square.
The first supporting mechanism 110 includes a first supporting seat 111, a second supporting seat 112 and a bidirectional displacement assembly 113. The first supporting seat 111 and the second supporting seat 112 are oppositely connected to two sides of the bidirectional displacement assembly 113, the first supporting seat 111 is used for abutting against the inner clip 131 of one clamping mechanism 130, and the second supporting seat 112 is used for abutting against the inner clip 131 of the other clamping mechanism 130. The bidirectional displacement assembly 113 is configured to drive the first support seat 111 and the second support seat 112 to be away from each other, so as to push the two inner clamping pins 131 to be away from each other, thereby pulling the cylindrical battery cell 200 outward to become square.
In this embodiment, the specific structure of the second supporting mechanism 120 is the same as that of the first supporting mechanism 110, and is not described herein again. Specifically, one end of the cylindrical battery cell 200 is pulled outward to deform by the first support seat 111 and the second support seat 112 of the first support mechanism 110, the other end of the cylindrical battery cell 200 is pulled outward to deform by the first support seat 111 and the second support seat 112 of the second support mechanism 120, and the first support mechanism 110 and the second support mechanism 120 work together to pull the cylindrical battery cell 200 into a square shape.
In this embodiment, the first supporting seat 111 and the second supporting seat 112 are disposed between the two inner clips 131. The first supporting seat 111 abuts against an inner clip 131 of one of the clamping mechanisms 130, and the bidirectional displacement component 113 can drive the first supporting seat 111 to apply an abutting force to the inner clip 131 so as to push the inner clip 131 to move outwards. The second supporting seat 112 abuts against the inner clip 131 of the other clamping mechanism 130, and the bidirectional displacement component 113 can drive the second supporting seat 112 to apply an abutting force to the inner clip 131, so as to push the inner clip 131 to move outwards. Specifically, after the battery cell 200 is pulled to be square, the bidirectional displacement assembly 113 is further configured to drive the first support seat 111 and the second support seat 112 to be close to each other and reset, so that the first support seat 111 is separated from the inner clip 131 of one clamping mechanism 130, and the second support seat 112 is separated from the inner clip 131 of another clamping mechanism 130, to wait for the next operation.
The bi-directional displacement assembly 113 includes a drive module 114 and a base 115. The driving module 114 is installed on the base 115 and is respectively connected with the first supporting seat 111 and the second supporting seat 112, the first supporting seat 111 and the second supporting seat 112 are both in sliding fit with the base 115, and the driving module 114 can drive the first supporting seat 111 and the second supporting seat 112 to slide relative to the base 115, so that the first supporting seat 111 and the second supporting seat 112 are close to each other or far away from each other.
Referring to fig. 5, the driving module 114 includes a bidirectional screw 1141, a first nut 1142, a second nut 1143 and a driving motor 1144. Driving motor 1144 is installed on base 115, and is connected with two-way lead screw 1141, and driving motor 1144 can drive two-way lead screw 1141 to rotate. The first nut 1142 and the second nut 1143 are both sleeved outside the bidirectional screw rod 1141 and are both in threaded fit with the bidirectional screw rod 1141, and the screwing directions of the first nut 1142 and the second nut 1143 are opposite, that is, in the process of rotating the bidirectional screw rod 1141, the directions of axial displacement of the first nut 1142 and the second nut 1143 along the bidirectional screw rod 1141 are opposite. The first nut 1142 is fixedly connected to the first support base 111, and the first nut 1142 can displace relative to the two-way screw rod 1141 and drive the first support base 111 to move. The second nut 1143 is fixedly connected to the second support base 112, and the second nut 1143 can displace relative to the two-way screw 1141 and drive the second support base 112 to move.
In this embodiment, when the driving motor 1144 drives the bidirectional screw rod 1141 to rotate clockwise, the first nut 1142 and the second nut 1143 are away from each other along the axial direction of the bidirectional screw rod 1141, so that the first supporting seat 111 and the second supporting seat 112 are away from each other; when the driving motor 1144 drives the bidirectional screw rod 1141 to rotate in the counterclockwise direction, the first nut 1142 and the second nut 1143 approach each other along the axial direction of the bidirectional screw rod 1141, so that the first supporting seat 111 and the second supporting seat 112 approach each other.
Referring to fig. 6, in the embodiment, the first support seat 111 is provided with a sliding slot 1111, the base 115 is provided with a sliding guide rail 1151, an extending direction of the sliding guide rail 1151 is the same as an axial direction of the bidirectional screw 1141, the sliding guide rail 1151 is in sliding fit with the sliding slot 1111, so that the first support seat 111 can slide relative to the base 115, and the sliding guide rail 1151 can limit the first support seat 111, so as to ensure that the first support seat 111 can only slide along the extending direction of the sliding guide rail 1151.
The first support base 111 includes a sliding portion 1112 and a support portion 1113. The first nut 1142 of the driving module 114 is fixedly connected to the sliding portion 1112, the first nut 1142 can drive the sliding portion 1112 to move along the axial direction of the two-way screw 1141, and the sliding slot 1111 is opened on the sliding portion 1112, so as to improve the stability of the sliding portion 1112 sliding relative to the base 115. The sliding portion 1112 is fixedly connected with the supporting portion 1113, the supporting portion 1113 is used for abutting against the inner clip 131, and the sliding portion 1112 can drive the supporting portion 1113 to displace, so as to push the inner clip 131 to translate outwards.
In this embodiment, the specific structure of the second supporting seat 112 is the same as that of the first supporting seat 111, and is not described herein again.
With continued reference to fig. 1, 2 and 3, the belt carrying mechanism 140 includes a conveyor belt assembly 141 and a lift cylinder 142. The lifting cylinder 142 is connected to the conveyor belt assembly 141 to drive the conveyor belt assembly 141 to rise or fall, and the conveyor belt assembly 141 is used for carrying and conveying the battery cells 200. Specifically, the lifting cylinder 142 can drive the conveyor belt assembly 141 to rise, so that the conveyor belt assembly 141 bears the bottom of the battery cell 200, and the subsequent prepressing operation is conveniently realized; the lifting cylinder 142 can also drive the conveyor belt assembly 141 to descend so as to reset the conveyor belt assembly 141. The conveyor belt assembly 141 can send out the battery cell 200 after the pre-pressing of the battery cell 200 is completed, so as to facilitate the next process.
The pre-press mechanism 150 includes a driving cylinder 151 and a pre-press plate 152. The driving cylinder 151 is connected to the pre-pressing plate 152, and the driving cylinder 151 can drive the pre-pressing plate 152 to rise or fall, so as to perform pre-pressing operation on the battery cell 200. Specifically, the pre-pressing plate 152 is arranged parallel to the conveyor belt assembly 141, the pre-pressing plate 152 can press the battery cell 200 on the conveyor belt assembly 141 to apply pre-pressing force to the battery cell 200, in this process, the first support mechanism 110 and the second support mechanism 120 simultaneously apply outward stretching pulling force to the battery cell 200 through the two inner clamping pins 131, the cylindrical battery cell 200 deforms into a square shape under the combined action of the pre-pressing force and the pulling force, and the deformation effect is good.
In the working process of the blanking prepressing device 100, firstly, the two clamping mechanisms 130 clamp two sides of the cylindrical battery core 200 in a one-to-one correspondence manner; then, the two clamping mechanisms 130 are away from each other to pull the cylindrical battery cell 200 to a preset tension value, and at the same time, the two clamping mechanisms 130 send the cylindrical battery cell 200 to a position between the first supporting mechanism 110 and the second supporting mechanism 120 to complete a blanking process, at this time, the two inner clamping pins 131 are oppositely arranged on the inner side of the cylindrical battery cell 200, and two ends of each inner clamping pin 131 respectively extend out of two ends of the battery cell 200; then, the lifting cylinder 142 drives the conveyor belt assembly 141 to lift up so as to bear the cylindrical battery cell 200; then, the driving cylinder 151 drives the pre-pressing plate 152 to fall to press and hold the cylindrical battery cell 200 on the conveyor belt assembly 141, so that the cylindrical battery cell 200 deforms, meanwhile, the first supporting seat 111 and the second supporting seat 112 of the first supporting mechanism 110 are away from each other, the first supporting seat 111 and the second supporting seat 112 of the second supporting mechanism 120 are away from each other, the two first supporting seats 111 apply a supporting force to two ends of one inner clip 131 respectively, and the two second supporting seats 112 apply a supporting force to two ends of the other inner clip 131 respectively, so as to drive the two inner clips 131 to be away from each other stably and keep a translation state all the time. In this way, the cylindrical battery cell 200 is deformed into a square shape under the action of the prepressing mechanism 150, the first supporting mechanism 110 and the second supporting mechanism 120, and in the deformation process, because the first supporting mechanism 110 and the second supporting mechanism 120 provide enough supporting force for the inner clamping pin 131, the inner clamping pin 131 does not incline or deform, so that the pole piece 210 and the diaphragm 220 of the inner ring of the battery cell 200 are prevented from being wrinkled, the corner gap of the battery cell 200 is reduced, the uniformity of the corner gap is improved, and the quality of the battery cell 200 is ensured.
In the blanking prepressing device 100 provided in the embodiment of the present invention, the two clamping mechanisms 130 are configured to clamp two sides of the electrical core 200 in a one-to-one correspondence manner, each of the clamping mechanisms 130 includes an inner clip 131, the inner clip 131 is disposed through the electrical core 200, the first supporting mechanism 110 and the second supporting mechanism 120 are disposed at two ends of the inner clip 131, each of the first supporting mechanism 110 and the second supporting mechanism 120 includes a first supporting seat 111, a second supporting seat 112 and a bidirectional displacement assembly 113, the first supporting seat 111 and the second supporting seat 112 are connected to two sides of the bidirectional displacement assembly 113, the first supporting seat 111 is configured to abut against one inner clip 131, the second supporting seat 112 is configured to abut against the other inner clip 131, and the bidirectional displacement assembly 113 is configured to drive the first supporting seat 111 and the second supporting seat 112 to move away from each other, so as to push the two inner clips 131 to move away from each other. Compared with the prior art, the blanking prepressing device 100 provided by the invention adopts the first supporting mechanism 110 and the second supporting mechanism 120 which are oppositely arranged at the two ends of the inner clamping pin 131, so that the inner clamping pin 131 can be prevented from inclining and deforming, the pole piece 210 and the diaphragm 220 of the inner ring of the battery cell 200 are prevented from being wrinkled, the corner gap of the battery cell 200 is reduced, the uniformity of the corner gap is improved, and the quality of the battery cell 200 is ensured. The yield of the electric core winder 10 is high, and the production efficiency is high.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A blanking prepressing device is characterized by comprising a first supporting mechanism, a second supporting mechanism and two clamping mechanisms, wherein the two clamping mechanisms are used for clamping two sides of an electric core in a one-to-one correspondence manner, each clamping mechanism comprises an inner clamping pin, the inner clamping pins penetrate through the electric core, the first supporting mechanism and the second supporting mechanism are oppositely arranged at two ends of the inner clamping pins, each first supporting mechanism and the corresponding second supporting mechanism respectively comprise a first supporting seat, a second supporting seat and a bidirectional displacement assembly, the first supporting seat and the second supporting seat are oppositely connected to two sides of the bidirectional displacement assembly, the first supporting seat is used for being abutted against one inner clamping pin, the second supporting seat is used for being abutted against the other inner clamping pin, and the bidirectional displacement assembly is used for driving the first supporting seat and the second supporting seat to be away from each other, to push the two inner clips away from each other.
2. The blanking prepressing device according to claim 1, wherein the first supporting seat and the second supporting seat are both disposed between two inner clamping pins, and the bidirectional displacement assembly is further configured to drive the first supporting seat and the second supporting seat to approach each other.
3. The blanking prepressing device according to claim 1, wherein the bidirectional displacement assembly includes a driving module and a base, the driving module is mounted on the base and connected to the first supporting seat and the second supporting seat respectively, and the first supporting seat and the second supporting seat are both in sliding fit with the base.
4. The blanking prepressing device according to claim 3, wherein the driving module includes a bidirectional screw, a first nut, a second nut and a driving motor, the driving motor is mounted on the base and connected with the bidirectional screw, the first nut and the second nut are both sleeved outside the bidirectional screw and both in threaded fit with the bidirectional screw, the threads of the first nut and the second nut are opposite in rotation direction, the first nut is fixedly connected with the first supporting seat, and the second nut is fixedly connected with the second supporting seat.
5. The blanking prepressing device according to claim 3, wherein the first supporting seat is provided with a sliding groove, the base is provided with a sliding guide rail, and the sliding guide rail is in sliding fit with the sliding groove.
6. The blanking prepressing device according to claim 5, wherein the first supporting seat comprises a sliding portion and a supporting portion, the driving module is connected with the sliding portion, the sliding portion is fixedly connected with the supporting portion, the sliding groove is formed in the sliding portion, and the supporting portion is used for abutting against the inner clamping pin.
7. The blanking prepressing device according to claim 1, wherein the clamping mechanism further comprises an outer clamping pin and a clamping seat, the outer clamping pin and the inner clamping pin are both mounted on the clamping seat, and the outer clamping pin can be close to or far away from the inner clamping pin to clamp or loosen the battery cell.
8. The blanking prepressing device according to claim 1, further comprising a belt bearing mechanism, wherein the belt bearing mechanism comprises a conveyor belt assembly and a lifting cylinder, the lifting cylinder is connected with the conveyor belt assembly to drive the conveyor belt assembly to rise or fall, and the conveyor belt assembly is used for bearing and conveying the battery cells.
9. The blanking prepressing device according to claim 1, further comprising a prepressing mechanism, wherein the prepressing mechanism comprises a driving cylinder and a prepressing plate, and the driving cylinder is connected with the prepressing plate to drive the prepressing plate to prepress the battery cell.
10. An electric core winder, characterized by comprising a blanking prepressing apparatus according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110047085.9A CN112736295A (en) | 2021-01-14 | 2021-01-14 | Unloading pre-compaction device and electricity core winder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110047085.9A CN112736295A (en) | 2021-01-14 | 2021-01-14 | Unloading pre-compaction device and electricity core winder |
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| Publication Number | Publication Date |
|---|---|
| CN112736295A true CN112736295A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110047085.9A Pending CN112736295A (en) | 2021-01-14 | 2021-01-14 | Unloading pre-compaction device and electricity core winder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284569A (en) * | 2021-12-27 | 2022-04-05 | 上海兰钧新能源科技有限公司 | Blanking assembly, battery cell blanking method and winding device |
| CN115799592A (en) * | 2022-10-13 | 2023-03-14 | 宁德时代新能源科技股份有限公司 | Battery cell blanking equipment and method |
-
2021
- 2021-01-14 CN CN202110047085.9A patent/CN112736295A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284569A (en) * | 2021-12-27 | 2022-04-05 | 上海兰钧新能源科技有限公司 | Blanking assembly, battery cell blanking method and winding device |
| CN114284569B (en) * | 2021-12-27 | 2023-09-05 | 上海兰钧新能源科技有限公司 | Discharging assembly, battery core discharging method and winding device |
| CN115799592A (en) * | 2022-10-13 | 2023-03-14 | 宁德时代新能源科技股份有限公司 | Battery cell blanking equipment and method |
| CN115799592B (en) * | 2022-10-13 | 2023-11-10 | 宁德时代新能源科技股份有限公司 | Battery cell blanking equipment and method |
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