CN111740169A - Battery cell continuous winding device and battery cell continuous winding method - Google Patents
Battery cell continuous winding device and battery cell continuous winding method Download PDFInfo
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- CN111740169A CN111740169A CN202010644145.0A CN202010644145A CN111740169A CN 111740169 A CN111740169 A CN 111740169A CN 202010644145 A CN202010644145 A CN 202010644145A CN 111740169 A CN111740169 A CN 111740169A
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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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 continuous winding device and a continuous winding method for a battery cell, and relates to the technical field of battery cell production. The battery cell continuous winding device comprises a first winding mechanism, a first guide rail, a second winding mechanism and a second guide rail, wherein the first guide rail and the second guide rail are arranged along a winding channel in an extending mode and are respectively located on two sides of the winding channel, the winding channel is provided with a winding preparation section and a winding station, the first winding mechanism and the second winding mechanism can respectively move along the first guide rail and the second guide rail and respectively move to the winding preparation section and the winding station, winding work can be carried out on the winding station to form an electric core member through winding, winding preparation work is carried out on the winding preparation section, and the first winding mechanism and the second winding mechanism can alternately move to the winding section to alternately carry out winding preparation work and winding work. The battery cell continuous winding device and the battery cell continuous winding method have the characteristic of high winding efficiency.
Description
Technical Field
The invention relates to the technical field of battery cell production, in particular to a battery cell continuous winding device and a battery cell continuous winding method.
Background
With the rapid development of electric automobiles, the demand of lithium batteries is increasing.
The winding is one of key technologies for manufacturing the lithium battery core, has great advantages, and has higher efficiency on the premise of meeting the quality of the battery core.
However, in the conventional cell winding apparatus, the cell winding auxiliary time (time other than the winding time in the winding work) is generally longer than the winding time, and the winding efficiency is low.
In view of the above, it is important to develop and design a cell continuous winding apparatus and a cell continuous winding method that can solve the above technical problems.
Disclosure of Invention
The invention aims to provide a battery cell continuous winding device which has the characteristic of high winding efficiency.
Another object of the present invention is to provide a method for continuously winding a battery cell, which also has the characteristic of high winding efficiency.
The invention provides a technical scheme that:
in a first aspect, an embodiment of the present invention provides a battery cell continuous winding apparatus, including a first winding mechanism, a first guide rail, a second winding mechanism, and a second guide rail; the first guide rail and the second guide rail are arranged along a winding channel in an extending mode and are respectively located on two sides of the winding channel, and the winding channel is a channel for conveying pole pieces and diaphragms; the winding channel is provided with a winding preparation section and a winding station; the first winding mechanism and the second winding mechanism are capable of moving along the first guide rail and the second guide rail respectively and moving to the winding preparation section and the winding station respectively, and are both capable of performing winding work at the winding station to wind and form the electric core member and performing winding preparation work at the winding preparation section; said second winding mechanism completing said winding operation at said winding station and moving toward said winding staging as said first winding mechanism completes said winding operation at said winding staging and moves toward said winding station; when the second winding mechanism completes the winding preparation work in the winding preparation section and moves to the winding station, the first winding mechanism completes the winding work in the winding station and moves to the winding preparation section so as to alternately perform the winding preparation work and the winding work.
With reference to the first aspect, in a first implementation manner of the first aspect, the winding preparation section includes a pin inserting station, a clamping and cutting station, and a blanking station, which are sequentially arranged along a first direction, and the winding station is located between the blanking station and the clamping and cutting station, where the first direction is a conveying direction of the pole piece and the diaphragm; the first winding mechanism comprises a first movable driving part and a first winding needle which are connected with each other, the first movable driving part is arranged on the first guide rail and can move along the first guide rail so as to drive the first winding needle to sequentially move to the pin inserting station, the clamping and cutting station, the winding station and the blanking station and drive the first winding needle to move from the blanking station to the pin inserting station; the first movement drive is further capable of: first volume needle by the unloading station removes to during the contact pin station, drive first volume needle withdraws from the coiling passageway, in order to avoid second winding mechanism first volume needle is located during the contact pin station, drives first volume needle stretches out to accomplish the contact pin action first volume needle is located during the centre gripping cuts the station, drives first volume needle centre gripping the diaphragm first volume needle is located during the coiling station, drives first volume needle rotates, with the coiling the pole piece with the diaphragm forms electric core piece first volume needle is located during the unloading station, drives first volume needle is taken out electric core piece.
With reference to the first aspect and the foregoing implementation manner, in a second implementation manner of the first aspect, in the process that the first winding needle moves from the needle inserting station to the clamping and cutting station, the first movable driving member can also move at an accelerated speed, so that the speed of the first winding needle reaching the clamping and cutting station is the conveying speed of the pole piece.
With reference to the first aspect and the foregoing implementation manner of the first aspect, in a third implementation manner of the first aspect, the first winding needle mechanism further includes a first cutting knife, and the first movable driving member is connected to the first cutting knife; when the first winding needle clamps the diaphragm, the first movable driving piece can also drive the first cutting knife to cut the diaphragm; when the first winding needle moves along a second direction opposite to the first direction, the first movable driving piece can also drive the first cutting knife to exit the winding channel so as to avoid the second winding mechanism.
With reference to the first aspect and the foregoing implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the first winding mechanism further includes two first rollers, and the first movable driving member is further connected to the two first rollers; when the first winding needle is positioned at the clamping and cutting station and the needle inserting station, the first movable driving piece can also drive two first rollers to be close to each other, so that the pole piece and the diaphragm are conveyed through the position between the two first rollers; when the first winding needle moves along the second direction, the first movable driving piece can drive the two first rollers to exit the winding channel so as to avoid the second winding mechanism.
With reference to the first aspect and the foregoing implementation manner of the first aspect, in a fifth implementation manner of the first aspect, when the first winding needle clamps the diaphragm, the first cutting knife is located between the two first passing roller positions and the first winding needle.
With reference to the first aspect and the foregoing implementation manner, in a sixth implementation manner of the first aspect, the battery cell continuous winding device further includes a tape attaching mechanism; and the adhesive tape pasting mechanism is arranged close to the winding station and is used for ending and adhering adhesive tape to the wound battery cell piece when the first winding mechanism or the second winding mechanism finishes the winding work in the winding station.
With reference to the first aspect and the foregoing implementation manner, in a seventh implementation manner of the first aspect, the continuous battery cell winding device further includes a blanking mechanism, where the blanking mechanism is disposed near the blanking station and is configured to unload the wound battery cell piece when the first winding mechanism or the second winding mechanism moves to the blanking station.
In a second aspect, an embodiment of the present invention further provides a method for continuously winding a battery cell, where the method for continuously winding a battery cell applies the device for continuously winding a battery cell; the continuous winding method of the battery cell comprises the following steps: and the first winding mechanism and the second winding mechanism alternately move to the winding station and alternately perform the winding work.
With reference to the second aspect, in a first implementation manner of the second aspect, the step of alternately moving the first winding mechanism and the second winding mechanism to the winding station and alternately performing the winding work includes: after the first winding mechanism finishes the winding preparation work, the first winding mechanism moves to the winding station and performs the winding work, and meanwhile, the second winding mechanism finishes the winding work, moves to the winding preparation section and performs the winding preparation work; after the second winding mechanism finishes the winding work, the second winding mechanism moves to the winding preparation section and performs winding preparation work, and meanwhile, the first winding mechanism finishes the winding work, moves to the winding preparation section and performs winding preparation work; and repeating the steps.
Compared with the prior art, the battery cell continuous winding device provided by the embodiment of the invention has the beneficial effects that compared with the prior art, the battery cell continuous winding device provided by the embodiment of the invention has the following advantages:
the first winding mechanism and the second winding mechanism can respectively move along the first guide rail and the second guide rail and respectively move to a winding preparation section and a winding station, the first winding mechanism and the second winding mechanism can respectively perform winding work at the winding station to form the electric core piece by winding, and perform winding preparation work at the winding preparation section, when the electric core continuous winding device works, the first winding mechanism performs winding preparation work at the winding preparation section, the second winding mechanism performs winding work at the winding section, when the first winding mechanism completes the winding preparation work at the winding preparation section and moves to the winding station, the second winding mechanism completes the winding work at the winding station and moves to the winding preparation section to exchange the positions of the first winding mechanism and the second mechanism, when the second winding mechanism completes the winding preparation work at the winding preparation section and moves to the winding station, the first winding mechanism finishes winding work at a winding station and moves towards the winding preparation section, in other words, when the first winding mechanism finishes winding work, the second winding mechanism finishes winding preparation work, when the first winding mechanism finishes winding work, the second winding mechanism also finishes winding preparation work and replaces the first winding mechanism to continue winding work, and when the second winding mechanism finishes winding work, the first winding mechanism also finishes winding preparation work and replaces the second winding mechanism to continue winding work, so that the purpose of alternately performing winding preparation work and winding work is achieved, continuous conveying of pole pieces and the diaphragm is kept, the auxiliary time of winding the battery cell is greatly shortened, and the winding efficiency of the continuous winding device of the battery cell is improved.
The beneficial effects of the cell continuous winding method provided by the embodiment of the invention relative to the prior art are the same as the beneficial effects of the cell continuous winding device relative to the prior art, and are not described again.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of a cell continuous winding device according to a first embodiment of the present invention at a viewing angle.
Fig. 2 is a schematic structural diagram of a cell continuous winding device provided in a first embodiment of the present invention at another viewing angle.
Fig. 3 is a schematic flow chart of a cell continuous winding method according to a second embodiment of the present invention.
Fig. 4 is a detailed flowchart of step S100 of a method for continuously winding a battery cell according to a second embodiment of the present invention.
Fig. 5 is a schematic specific flow chart of a cell continuous winding method according to a second embodiment of the present invention.
Icon: 10-continuous winding device of battery cell; 11-a first winding mechanism; 111-a first mobile drive; 112-a first winding needle; 113-a first cutting knife; 114-first pass roller; 12-a first guide rail; 151-pin inserting station; 152-clamping and cutting station; 153-a winding station; 154-a blanking station; 16-a second winding mechanism; 161-a second movable drive; 162-a second winding needle; 163-second cutting knife; 164-a second pass roller; 17-a second guide rail; 19-a rubberizing mechanism; 910-pole piece; 920-a membrane; 930-electrical core pieces; a-a first direction; b-a second direction.
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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. 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.
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. The terms "upper", "lower", "inner", "outer", "left", "right", and the like, refer to an orientation or positional relationship as shown in the drawings, or as would be conventionally found in use of the inventive product, or as would be conventionally understood by one skilled in the art, and are used merely to facilitate the description and simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It is also to be understood that, unless expressly stated or limited otherwise, the terms "disposed," "connected," and the like are intended to be open-ended, and mean "connected," i.e., fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings.
The first embodiment:
referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a cell continuous winding device 10 according to a first embodiment of the present invention at a viewing angle. Fig. 2 is a schematic structural diagram of the cell continuous winding device 10 according to the first embodiment of the present invention at another view angle. In fig. 1 and 2, the direction indicated by the arrow a is a first direction a, and the direction indicated by the arrow B is a second direction B.
The first embodiment of the present invention provides a cell continuous winding device 10, in which the cell continuous winding device 10 is used for winding a pole piece 910 and a diaphragm 920 to form a core member 930, and the cell continuous winding device 10 has a characteristic of high winding efficiency. The cell continuous winding device 10 can be applied to cell production equipment or a cell production line and the like.
The structural composition, the operation principle and the beneficial effects of the cell continuous winding device 10 according to the first embodiment of the present invention will be described in detail below.
The continuous cell winding device 10 includes a first winding mechanism 11, a first guide rail 12, a second winding mechanism 16, and a second guide rail 17, where the first guide rail 12 and the second guide rail 17 are both extended along a winding channel (not shown) and located at two sides of the winding channel, respectively, and the winding channel is a channel for conveying a pole piece 910 and a diaphragm 920; the winding tunnel is provided with a winding preparation section (not shown) and a winding station 153.
The first winding mechanism 11 and the second winding mechanism 16 are capable of moving along the first guide rail 12 and the second guide rail 17, respectively, and moving to the winding preparation section and the winding station 153, respectively, and both the first winding mechanism 11 and the second winding mechanism 16 are capable of performing winding work at the winding station 153 to wind and form the electrical core member 930, and performing winding preparation work at the winding preparation section, while the first winding mechanism 11 performs winding preparation work at the winding preparation section and the second winding mechanism 16 performs winding work at the winding section when the electrical core continuous winding device 10 is operated, and while the first winding mechanism 11 completes winding preparation work at the winding preparation section and moves to the winding station 153, the second winding mechanism 16 completes winding work at the winding station 153 and moves to the winding preparation section to exchange positions of the first winding mechanism 11 and the second mechanism, while the second winding mechanism 16 completes winding preparation work at the winding preparation section and moves to the winding station 153, the first winding mechanism 11 completes the winding work at the winding station 153 and moves to the winding preparation section, in other words, when the first winding mechanism 11 performs the winding work, the second winding mechanism 16 performs the winding preparation work, when the first winding mechanism 11 completes the winding work, the second winding mechanism 16 also completes the winding preparation work and replaces the first winding mechanism 11 to continue the winding work, and when the second winding mechanism 16 completes the winding work, the first winding mechanism 11 also completes the winding preparation work and replaces the second winding mechanism 16 to continue the winding work, so that the purpose of alternately performing the winding preparation work and the winding work is achieved, the pole piece 910 and the diaphragm 920 are continuously conveyed, the cell winding auxiliary time is greatly shortened, and the winding efficiency of the cell continuous winding device 10 is improved.
The winding work includes an operation of winding the pole piece 910 and the separator 920, and the winding preparation work includes an operation of inserting a pin, an operation of cutting the separator 920, an operation of sandwiching the separator 920, an operation of pre-winding the separator 920 and the pole piece 910, and an operation of pulling out the wound electric core member 930.
Further, the winding preparation section includes a pin inserting station 151, a clamping and cutting station 152, and a blanking station 154 sequentially arranged along the first direction a, and the winding station 153 is located between the blanking station 154 and the clamping and cutting station 152, the first winding mechanism 11 can complete the operation of winding the pole piece 910 and the diaphragm 920 in the winding operation, complete the pin inserting operation in the pin inserting station 151, complete the operation of cutting the diaphragm 920, the operation of clamping the diaphragm 920, and the operation of pre-winding the diaphragm 920 and the pole piece 910 in the clamping and cutting station 152, and complete the operation of extracting the wound electric core member 930 in the blanking station 154. The first direction a is the transport direction of the pole piece 910 and the diaphragm 920.
First winding mechanism 11 includes interconnect's first removal driving piece 111 and first book needle 112, and first removal driving piece 111 sets up in first guide rail 12, and can follow first guide rail 12 motion to drive first book needle 112 and remove to needle insertion station 151, centre gripping cutting station 152, coiling station 153 and unloading station 154 along first direction A in proper order, and drive first book needle 112 and remove to needle insertion station 151 along second direction B by unloading station 154.
When the first winding needle 112 moves from the blanking station 154 to the inserting station 151 and the first winding needle 112 moves along the second direction B, the first movable driving member 111 can also drive the first winding needle 112 to exit the winding path to avoid the second winding mechanism 16, so that the second winding needle 162 moves from the blanking station 154 to the inserting station 151. When the first winding needle 112 is located at the inserting needle station 151, the first movable driving member 111 can also drive the first winding needle 112 to extend out to complete the inserting needle action. The first movable driving member 111 can also drive the first winding needle 112 to clamp the membrane 920 when the first winding needle 112 is located at the clamping and cutting station 152. In addition, the first movable driving member 111 can also drive the first winding needle 112 to rotate, so as to drive the first winding needle 112 to complete the actions of pre-winding the membrane 920 and the pole piece 910. First movable drive 111 is also capable of rotating first winder needle 112 while first winder needle 112 is at winding station 153 to wind pole piece 910 and diaphragm 920 and form electrical core member 930. The first movable driving member 111 can also drive the first winding needle 112 to draw out the electric core member 930 while the first winding needle 112 is at the blanking station 154.
Correspondingly, the second winding mechanism 16 is capable of completing the operation of winding the pole piece 910 and the diaphragm 920 in the winding operation, completing the operation of inserting the pin in the pin inserting station 151, completing the operation of cutting the diaphragm 920, the operation of clamping the diaphragm 920, and the operation of pre-winding the diaphragm 920 and the pole piece 910 in the clamping and cutting station 152, and completing the operation of extracting the wound electric core member 930 in the blanking station 154. The first direction a is the transport direction of the pole piece 910 and the diaphragm 920.
The second winding mechanism 16 includes a second movable driving member 161 and a second winding needle 162 connected to each other, the second movable driving member 161 is disposed on the second guide rail 17 and can move along the second guide rail 17 to drive the second winding needle 162 to sequentially move to the needle inserting station 151, the clamping and cutting station 152, the winding station 153 and the blanking station 154 along the first direction a, and drive the second winding needle 162 to move to the needle inserting station 151 from the blanking station 154 along the second direction B.
When the second winding needle 162 moves from the blanking station 154 to the inserting station 151, that is, the second winding needle 162 moves along the second direction B, the second moving driving member 161 can also drive the second winding needle 162 to exit the winding channel to avoid the first winding mechanism 11, so that the second winding needle 162 moves from the blanking station 154 to the inserting station 151. When the second winding pin 162 is located at the inserting station 151, the second movable driving member 161 can also drive the second winding pin 162 to extend out, so as to complete the inserting operation. When the second winding needle 162 is located at the clamping and cutting station 152, the second moving driver 161 can drive the second winding needle 162 to clamp the membrane 920. In addition, the second movable driving member 161 can also drive the second winding needle 162 to rotate, so as to drive the second winding needle 162 to complete the action of pre-winding the membrane 920 and the pole piece 910. Second mobile driving element 161 is also able to rotate second winding needle 162 while second winding needle 162 is in winding station 153, so as to wind pole piece 910 and diaphragm 920 and form electric core piece 930. The second moving driver 161 can also drive the second winding needle 162 to draw out the electrical core piece 930 when the second winding needle 162 is located at the blanking station 154.
Further, in the process that the first winding needle 112 moves from the inserting station 151 to the clamping and cutting station 152, the first movable driving member 111 can also drive the first winding needle 112 to move in an accelerated manner, so that the speed of the first winding needle 112 reaching the clamping and cutting station 152 is the conveying speed of the pole piece 910 and the diaphragm 920, and when the first winding needle 112 clamps the diaphragm 920, the speed is the same as that of the diaphragm 920, thereby avoiding the situation that the diaphragm 920 is torn or the diaphragm 920 is wrinkled due to the speed difference between the first winding needle 112 and the diaphragm 920.
In the process that the second winding needle 162 moves from the needle inserting station 151 to the clamping and cutting station 152, the second moving driving member 161 can also drive the second winding needle 162 to move at an accelerated speed, so that the speed of the second winding needle 162 reaching the clamping and cutting station 152 is the conveying speed of the pole piece 910 and the diaphragm 920, and the speed of the second winding needle 162 clamping the diaphragm 920 is the same as that of the diaphragm 920, thereby avoiding the situation that the diaphragm 920 is torn or the diaphragm 920 is wrinkled due to the speed difference between the second winding needle 162 and the diaphragm 920.
Further, the first needle winding 112 mechanism may further include a first cutting blade 113, and the first movable driving member 111 is connected to the first cutting blade 113. When the first winding needle 112 clamps the membrane 920, the first movable driving member 111 can also drive the first cutting blade 113 to cut the membrane 920, so that the first winding needle 112 can rotate to pre-wind the membrane 920 and the pole piece 910. When the first winding needle 112 moves along the second direction B, that is, when the first winding needle 112 moves from the blanking station 154 to the inserting station 151, the first movable driving member 111 can also drive the first cutting blade 113 to exit the winding channel, so as to avoid the second winding mechanism 16.
The second needle winding 162 mechanism may further include a second cutting blade 163, and the second movable driving member 161 is connected to the second cutting blade 163. When the second winding needle 162 clamps the membrane 920, the second movable driving member 161 can also drive the second cutting knife 163 to cut the membrane 920, so that the second winding needle 162 can rotate to pre-wind the membrane 920 and the pole piece 910. When the second winding needle 162 moves in the second direction B, that is, the second winding needle 162 moves from the blanking station 154 to the inserting station 151, the second movable driving member 161 can also drive the second cutting blade 163 to exit the winding channel, so as to avoid the first winding mechanism 11.
Further, the first winding mechanism 11 may further include two first rollers 114, and the first movable driving member 111 is further connected to the two first rollers 114. When the first winding needle 112 is located at the clamping and cutting station 152 and the needle inserting station 151, the first movable driving member 111 can also drive the two first rollers 114 to approach, so that the pole piece 910 and the diaphragm 920 are conveyed through a position between the two first rollers 114, and the positions of the pole piece 910 and the diaphragm 920 are limited, so that the accuracy of the needle inserting action and the clamping action is improved. Moreover, when the first winding needle 112 moves in the second direction B, that is, when the first winding needle 112 moves from the blanking station 154 to the inserting station 151, the first movable driving member 111 can also drive the two first rollers 114 to exit the winding channel, so as to avoid the second winding mechanism 16.
The second winding mechanism 16 may further include two second rollers 164, and the second movable driving member 161 is further connected to the two second rollers 164. When the second winding needle 162 is located at the clamping and cutting station 152 and the needle inserting station 151, the second movable driving member 161 can also drive the two second rollers 164 to approach, so that the pole piece 910 and the diaphragm 920 are conveyed through the position between the two second rollers 164, and the positions of the pole piece 910 and the diaphragm 920 are limited, thereby improving the accuracy of the needle inserting action and the clamping action. Moreover, when the second winding needle 162 moves along the second direction B, that is, the second winding needle 162 moves from the blanking station 154 to the inserting station 151, the second moving driving member 161 can also drive the two second passing rollers 164 to exit the winding path to avoid the first winding mechanism 11.
It should be noted that the first movable driving element 111 and the second movable driving element 161 are composed of a plurality of driving elements, so as to achieve the purpose that the first movable driving element 111 drives the first winding needle 112, the first passing roller 114 and the first cutting knife 113 to move respectively, and the second movable driving element 161 drives the second winding needle 162, the second passing roller 164 and the second cutting knife 163 to move respectively.
Further, when the first winding needle 112 clamps the membrane 920, that is, when the first cutting knife 113 cuts the membrane 920, the first cutting knife 113 is located between the two first roller 114 positions and the first winding needle 112, so that the position of the membrane 920 is limited by the first winding needle 112 and the first roller 114 together, so that the first cutting knife 113 can accurately cut the membrane 920.
When the second winding needle 162 clamps the membrane 920, that is, when the second cutting knife 163 cuts the membrane 920, the second cutting knife 163 is located between the two second rollers 164 and the second winding needle 162, so that the position of the membrane 920 is limited by the second winding needle 162 and the second rollers 164 together, so that the second cutting knife 163 can accurately cut the membrane 920.
With continued reference to fig. 1 and fig. 2, the cell continuous winding apparatus 10 may further include a tape adhering mechanism 19, where the tape adhering mechanism 19 is disposed near the winding station 153 and is configured to perform tape ending on the wound cell element 930 when the first winding mechanism 11 or the second winding mechanism 16 completes the winding operation at the winding station 153.
It should be noted that the tape pasting mechanism 19 may also be disposed near the blanking station 154 to perform end tape pasting on the wound cell element 930 when the first winding mechanism 11 or the second winding mechanism 16 moves to the blanking station 154.
Further, the continuous cell winding device 10 may further include a blanking mechanism (not shown) disposed adjacent to the blanking station 154 and configured to discharge the wound cell element 930 when the first winding mechanism 11 or the second winding mechanism 16 moves to the blanking station 154, so as to prepare for returning the first winding mechanism 11 or the second winding mechanism 16 to the insertion station 151.
The operation principle of the cell continuous winding device 10 provided by the first embodiment of the present invention is as follows:
when the second movable driving member 161 drives the second winding needle 162 to move to the winding station 153 and drives the second winding needle 162 to rotate the winding pole piece 910 and the diaphragm 920, the first movable driving member 111 drives the first winding needle 112 to move to the blanking station 154 and drives the second winding needle 162 to draw out the electric core piece 930, and meanwhile, the blanking mechanism unloads the wound electric core piece 930;
the first movable driving member 111 drives the first winding needle 112 to move from the blanking station 154 to the inserting station 151, and at the same time, the first movable driving member 111 also drives the first winding needle 112 to retract and drives the first passing roller 114 and the first cutting knife 113 to exit the winding channel, so as to avoid the second winding mechanism 16;
when the first winding needle 112 moves to the needle inserting station 151, the first moving driving member 111 drives the two first rollers 114 to approach, so that the pole piece 910 and the diaphragm 920 are conveyed through a position between the two first rollers 114, and the positions of the pole piece 910 and the diaphragm 920 are limited; the first movable driving member 111 drives the first winding needle 112 to extend out to complete the needle inserting operation, so that the pole piece 910 and the diaphragm 920 are located in the first winding needle 112;
the first movable driving member 111 drives the first winding needle 112 to move to the clamping and cutting station 152; in the process of moving from the inserting station 151 to the clamping and cutting station 152, the first movable driving member 111 further drives the first winding needle 112 to move in an accelerated manner, so that the speed of the first winding needle 112 reaching the clamping and cutting station 152 is the conveying speed of the pole piece 910 and the diaphragm 920;
when the first winding needle 112 moves to the clamping and cutting station 152, the first moving driving member 111 drives the first winding needle 112 to clamp the diaphragm 920, simultaneously drives the first cutting knife 113 to cut the diaphragm 920, and drives the first winding needle 112 to rotate after cutting the diaphragm 920 so as to pre-wind the diaphragm 920 and the pole piece 910, and the second winding needle 162 completes the winding of the battery cell and carries out end rubberizing on the battery core member 930 on the second winding needle 162 through the rubberizing mechanism 19;
the first movable driving member 111 drives the first winding needle 112 to move to the winding station 153, so as to wind the pole piece 910 and the diaphragm 920, meanwhile, the second movable driving member 161 drives the second winding needle 162 to move to the blanking station 154, and the first winding mechanism 11 repeats the above-mentioned actions of the first winding mechanism 11, and the first winding mechanism 11 repeats the above-mentioned actions of the second winding mechanism 16, so as to achieve the effect of alternately winding the battery cell by the first winding mechanism 11 and the second winding mechanism 16.
In summary, the following steps:
a first embodiment of the present invention provides a cell continuous winding device 10, which has a characteristic of high winding efficiency.
Second embodiment:
referring to fig. 3, fig. 3 is a schematic flow chart of a cell continuous winding method according to a second embodiment of the present invention.
A second embodiment of the present invention provides a method for continuously winding a battery cell, where the method for continuously winding a battery cell has a characteristic of high winding efficiency. The cell continuous winding method is applied to the cell continuous winding apparatus 10 of the above embodiment.
It should be noted that the basic principle and the generated technical effects of the method for continuously winding the battery cell provided by the embodiment are the same as those of the embodiment described above, and for the sake of brief description, no part of the present embodiment is mentioned, and reference may be made to the corresponding contents in the embodiment described above.
The method for continuously winding the battery cell comprises the following steps:
step S100: the first winding mechanism 11 and the second winding mechanism 16 are alternately moved to the winding station 153 and alternately perform the winding work. In other words, after the first winding mechanism 11 completes the winding operation, the second winding mechanism 16 continues to perform the winding operation at the winding station 153, and after the second winding mechanism 16 completes the winding operation, the first winding mechanism 11 continues to perform the winding operation at the winding station 153, so that the pole piece 910 and the separator 920 are continuously conveyed, the cell winding auxiliary time is greatly reduced, and the winding efficiency of the cell continuous winding device 10 is improved.
Referring to fig. 4, fig. 4 is a schematic specific flowchart of step S100 of a method for continuously winding a battery cell according to a second embodiment of the present invention.
Further, step S100 may include:
step S101: after the first winding mechanism 11 completes the winding preparation work, the first winding mechanism 11 moves to the winding station 153 and performs the winding work, and at the same time, the second winding mechanism 16 completes the winding work and moves to the winding preparation section and performs the winding preparation work;
step S102: after the second winding mechanism 16 completes the winding work, the second winding mechanism 16 moves to the winding preparation stage and performs the winding preparation work, and at the same time, the first winding mechanism 11 completes the winding work and moves to the winding preparation stage and performs the winding preparation work. And the purpose of continuously performing the winding work is achieved by repeating the above steps.
Referring to fig. 5, fig. 5 is a schematic flow chart of a cell continuous winding method according to a second embodiment of the present invention. In addition, the specific process of the cell continuous winding method may further include:
step S103: when the second movable driving member 161 drives the second winding needle 162 to move to the winding station 153 and drives the second winding needle 162 to rotate the winding pole piece 910 and the diaphragm 920, the first movable driving member 111 drives the first winding needle 112 to move to the blanking station 154 and drives the second winding needle 162 to draw out the electric core piece 930, and meanwhile, the blanking mechanism unloads the wound electric core piece 930;
step S104: the first movable driving member 111 drives the first winding needle 112 to move from the blanking station 154 to the needle inserting station 151, and simultaneously, the first movable driving member 111 also drives the first winding needle 112 to retract and drives the first passing roller 114 and the first cutting knife 113 to exit from the winding channel;
step S105: when the first winding needle 112 moves to the needle inserting station 151, the first movable driving member 111 drives the two first passing rollers 114 to approach;
step S106: the first movable driving member 111 drives the first reel needle 112 to extend out to complete the needle inserting operation;
step S107: the first movable driving member 111 drives the first winding needle 112 to move to the clamping and cutting station 152 at an accelerated speed, so that the speed of the first winding needle 112 reaching the clamping and cutting station 152 is the conveying speed of the pole piece 910 and the diaphragm 920;
step S108: when the first winding needle 112 moves to the clamping and cutting station 152, the first movable driving member 111 drives the first winding needle 112 to clamp the membrane 920, simultaneously drives the first cutting knife 113 to cut the membrane 920, and drives the first winding needle 112 to rotate after cutting the membrane 920, simultaneously, the second winding needle 162 completes the winding of the battery core, and the end gluing is performed on the battery core member 930 on the second winding needle 162 through the gluing mechanism 19;
step S109: the first movable driving member 111 drives the first winding needle 112 to move to the winding station 153, and drives the first winding needle 112 to rotate, and meanwhile, the second movable driving member 161 drives the second winding needle 162 to move to the blanking station 154. The second winding mechanism 16 repeats the operation of the first winding mechanism 11 in the above steps S103 to S109, and the first winding mechanism 11 repeats the operation of the second winding mechanism 16 in the steps S103 to S109, so as to achieve the effect of alternately winding the battery cells by the first winding mechanism 11 and the second winding mechanism 16.
The working principle of the method for continuously winding the battery cell provided by the second embodiment of the invention is as follows:
the first winding mechanism 11 and the second winding mechanism 16 alternately move to the winding station 153 and alternately perform winding operation, so that after the first winding mechanism 11 completes the winding operation, the second winding mechanism 16 continues to perform the winding operation at the winding station 153, and after the second winding mechanism 16 completes the winding operation, the first winding mechanism 11 continues to perform the winding operation at the winding station 153, so that the pole piece 910 and the diaphragm 920 are continuously conveyed, the cell winding auxiliary time is greatly shortened, and the winding efficiency of the cell continuous winding device 10 is improved.
In summary, the following steps:
a second embodiment of the present invention provides a method for continuously winding a battery cell, which also has a characteristic of high winding efficiency.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that the features in the above embodiments may be combined with each other and the present invention may be variously modified and changed without conflict. 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. The present embodiments are to be considered as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The continuous winding device for the battery cell is characterized by comprising a first winding mechanism (11), a first guide rail (12), a second winding mechanism (16) and a second guide rail (17);
the first guide rail (12) and the second guide rail (17) extend along a winding channel and are respectively positioned at two sides of the winding channel, wherein the winding channel is a channel for conveying a pole piece (910) and a diaphragm (920); the winding channel is provided with a winding preparation section and a winding station (153);
the first winding mechanism (11) and the second winding mechanism (16) are respectively movable along the first guide rail (12) and the second guide rail (17) and respectively to the winding preparation section and the winding station (153), and are both capable of performing a winding operation at the winding station (153) to wind and form the electrical core member (930) and a winding preparation operation at the winding preparation section;
said second winding mechanism (16) completing said winding operation at said winding station (153) and moving towards said winding preparation section while said first winding mechanism (11) completing said winding preparation operation at said winding preparation section and moving towards said winding station (153); when the second winding mechanism (16) completes the winding preparation work in the winding preparation section and moves to the winding station (153), the first winding mechanism (11) completes the winding work in the winding station (153) and moves to the winding preparation section to alternately perform the winding preparation work and the winding work.
2. The continuous battery cell winding device according to claim 1, wherein the winding preparation section comprises a pin inserting station (151), a clamping and cutting station (152) and a blanking station (154) which are sequentially arranged along a first direction (A), the winding station (153) is located between the blanking station (154) and the clamping and cutting station (152), and the first direction (A) is a conveying direction of the pole piece (910) and the diaphragm (920);
the first winding mechanism (11) comprises a first movable driving part (111) and a first winding needle (112) which are connected with each other, the first movable driving part (111) is arranged on the first guide rail (12) and can move along the first guide rail (12) to drive the first winding needle (112) to sequentially move to the pin inserting station (151), the clamping and cutting station (152), the winding station (153) and the blanking station (154), and drive the first winding needle (112) to move from the blanking station (154) to the pin inserting station (151);
the first movement drive (111) is further capable of: when the first winding needle (112) moves from the blanking station (154) to the inserting station (151), driving the first winding needle (112) to exit the winding channel to avoid the second winding mechanism (16), when the first winding needle (112) is positioned at the needle inserting station (151), the first winding needle (112) is driven to extend out to complete the needle inserting action, when the first winding needle (112) is positioned at the clamping and cutting station (152), the first winding needle (112) is driven to clamp the diaphragm (920), when the first winding needle (112) is positioned at the winding station (153), the first winding needle (112) is driven to rotate, to wind the pole piece (910) and the diaphragm (920) and form a core piece (930), when the first winding needle (112) is located at the blanking station (154), the first winding needle (112) is driven to draw out the electric core piece (930).
3. The continuous cell winding device according to claim 2, wherein during the movement of the first winding needle (112) from the insertion station (151) to the clamping and cutting station (152), the first movable driving member (111) is further capable of accelerating to make the speed of the first winding needle (112) reaching the clamping and cutting station (152) be the conveying speed of the pole piece (910).
4. The continuous cell winding device according to claim 3, wherein the first winding needle (112) mechanism further comprises a first cutting knife (113), and the first movable driving member (111) is connected to the first cutting knife (113);
when the first winding needle (112) clamps the diaphragm (920), the first movable driving part (111) can drive the first cutting knife (113) to cut the diaphragm (920); when the first winding needle (112) moves along a second direction (B) opposite to the first direction (A), the first movable driving part (111) can also drive the first cutting knife (113) to exit the winding channel so as to avoid the second winding mechanism (16).
5. The continuous cell winding device according to claim 4, wherein the first winding mechanism (11) further comprises two first rollers (114), and the first movable driving member (111) is further connected with the two first rollers (114);
when the first winding needle (112) is positioned at the clamping and cutting station (152) and the needle inserting station (151), the first movable driving part (111) can also drive the two first rollers (114) to be close, so that the pole piece (910) and the diaphragm (920) are conveyed through a position between the two first rollers (114);
when the first winding needle (112) moves along the second direction (B), the first movable driving piece (111) can drive the two first rollers (114) to exit the winding channel so as to avoid the second winding mechanism (16).
6. The continuous cell winding device according to claim 5, wherein the first cutting knife (113) is located between the two first roller-passing positions (114) and the first winding needle (112) when the first winding needle (112) clamps the membrane (920).
7. The continuous cell winding device according to any one of claims 1 to 6, wherein the continuous cell winding device (10) further comprises a rubberizing mechanism (19);
the rubberizing mechanism (19) is arranged close to the winding station (153) and is used for performing end rubberizing on the wound electric core member (930) when the first winding mechanism (11) or the second winding mechanism (16) completes the winding work at the winding station (153).
8. The continuous cell winding device according to any one of claims 2 to 6, wherein the continuous cell winding device (10) further comprises a blanking mechanism disposed adjacent to the blanking station (154) and configured to discharge the wound cell element (930) when the first winding mechanism (11) or the second winding mechanism (16) moves to the blanking station (154).
9. A cell continuous winding method, characterized in that the cell continuous winding method is applied to the cell continuous winding apparatus (10) according to any one of claims 1 to 8;
the continuous winding method of the battery cell comprises the following steps:
the first winding mechanism (11) and the second winding mechanism (16) are alternately moved to the winding station (153) and alternately perform the winding work.
10. The method for continuously winding the battery cell according to claim 9, wherein the steps of alternately moving the first winding mechanism (11) and the second winding mechanism (16) to the winding station (153) and alternately performing the winding work comprise:
after the first winding mechanism (11) finishes the winding preparation work, the first winding mechanism (11) moves to the winding station (153) and performs the winding work, and meanwhile, the second winding mechanism (16) finishes the winding work, moves to the winding preparation section and performs the winding preparation work;
after the second winding mechanism (16) finishes the winding work, the second winding mechanism (16) moves to the winding preparation section and performs the winding preparation work, and at the same time, the first winding mechanism (11) finishes the winding work, moves to the winding preparation section and performs the winding preparation work;
and repeating the steps.
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| CN202010644145.0A CN111740169A (en) | 2020-07-06 | 2020-07-06 | Battery cell continuous winding device and battery cell continuous winding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010644145.0A CN111740169A (en) | 2020-07-06 | 2020-07-06 | Battery cell continuous winding device and battery cell continuous winding method |
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| CN111740169A true CN111740169A (en) | 2020-10-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363595A (en) * | 2021-06-02 | 2021-09-07 | 深圳吉阳智能科技有限公司 | Power lithium ion battery and preparation method thereof |
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