CN218039357U - Battery cell manufacturing equipment - Google Patents
Battery cell manufacturing equipment Download PDFInfo
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- CN218039357U CN218039357U CN202220518466.0U CN202220518466U CN218039357U CN 218039357 U CN218039357 U CN 218039357U CN 202220518466 U CN202220518466 U CN 202220518466U CN 218039357 U CN218039357 U CN 218039357U
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 202
- 238000005520 cutting process Methods 0.000 claims abstract description 91
- 238000004804 winding Methods 0.000 claims abstract description 70
- 230000005405 multipole Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 33
- 230000000712 assembly Effects 0.000 claims description 24
- 238000000429 assembly Methods 0.000 claims description 24
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical group [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
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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
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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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The utility model relates to an electricity core manufacture equipment, including first feedway, second feedway, diaphragm feedway and take-up device. The first wide pole piece is divided into two parts after being cut by the first cutting mechanism to obtain two first pole pieces, and the first die cutting mechanism can be used for die cutting first pole lug areas of the two first pole pieces into a multi-pole lug structure. After the second wide pole piece is processed by the second feeding device, the second wide pole piece can be divided into two parts to obtain two second pole pieces, and a multi-pole-lug structure is formed in the second pole lug areas of the two second pole pieces. The two first pole pieces are aligned with the two second pole pieces in a one-to-one correspondence manner, and enter the winding device together with the diaphragm provided by the diaphragm feeding device. So, coil needle mechanism and carry out once convoluteing alright two electric cores of shaping simultaneously, and the utmost point ear of electric core lies in same one side. Therefore, the production efficiency of the battery cell can be further improved by the battery cell manufacturing equipment.
Description
Technical Field
The utility model relates to a lithium battery equipment technical field, in particular to electricity core manufacture equipment.
Background
As a rechargeable secondary battery, a lithium battery has advantages of small size, high energy density, high cycle number, high stability, and the like, and has been widely used in automotive power batteries. Most lithium battery manufacturers currently adopt a winding process to prepare the battery core of the lithium battery. However, the winding machine can only wind and form one battery cell at a time, so that the production efficiency of the battery cell is limited.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a cell manufacturing apparatus capable of further improving the production efficiency of the cell in view of the above-described problems.
A cell manufacturing apparatus comprising:
the first feeding device comprises a first unwinding mechanism, a first cutting mechanism and a first die cutting mechanism, wherein the first unwinding mechanism is used for unwinding a first wide-width pole piece, two side edges of the first wide-width pole piece in the width direction are provided with first tab areas extending in the length direction, the first cutting mechanism can cut the first wide-width pole piece into two first pole pieces in the length direction, one side edge of each first pole piece is provided with the first tab area, and the first die cutting mechanism can die-cut the first tab area of each first pole piece into a multi-tab structure;
the second feeding device comprises a second unwinding mechanism, a second slitting mechanism and a second die cutting mechanism, wherein the second unwinding mechanism is used for unwinding a second wide-width pole piece, two side edges in the width direction of the second wide-width pole piece are provided with a second tab area extending along the length direction, the second slitting mechanism can slit the second wide-width pole piece into two second pole pieces along the length direction, one side edge of each second pole piece is provided with the second tab area, the second die cutting mechanism can die-cut the second tab area of each second pole piece into a multi-tab structure, and the two second pole pieces are respectively arranged in pairs with the two first pole pieces;
a diaphragm feeding device for providing diaphragms between and outside each pair of the first pole piece and the second pole piece; and
the winding device comprises a winding needle mechanism, and the winding needle mechanism can wind the two first pole pieces, the two second pole pieces and the plurality of diaphragms into two battery cells;
any one of the first pole piece and the second pole piece is a positive pole piece, and the other one is a negative pole piece.
In one embodiment, the first slitting mechanism is located downstream of the first die-cutting mechanism; the second slitting mechanism is located downstream of the second die-cutting mechanism.
In one embodiment, the first feeding device further comprises a first separating mechanism, the first separating mechanism comprises two first separating rollers for supporting the two first pole pieces respectively, and rotating shafts of the two first separating rollers are arranged at an angle; the second feeding device further comprises a second separating mechanism, the second separating mechanism comprises two second separating rollers which are used for supporting the second pole pieces respectively, and the rotating shafts of the second separating rollers are arranged at an angle.
In one embodiment, the first feeding device further comprises a first process deviation rectifying mechanism, the first process deviation rectifying mechanism comprises two first process deviation rectifying assemblies, and each first process deviation rectifying assembly can rectify the wound first pole piece; the second feeding device further comprises a second process deviation rectifying mechanism, the second process deviation rectifying mechanism comprises two second process deviation rectifying assemblies, and each second process deviation rectifying assembly can rectify the second pole piece which winds the warp.
In one embodiment, the feeding device further comprises a first feeding device, wherein the first feeding device comprises a first clamping mechanism and a first cutting mechanism located downstream of the first clamping mechanism, the first clamping mechanism can clamp and convey two first pole pieces downstream, and the first cutting mechanism can cut off the two first pole pieces.
In one embodiment, the first feeding device further includes a first feeding deviation rectifying mechanism located at a downstream of the first cutting mechanism, the first feeding deviation rectifying mechanism includes two first feeding deviation rectifying assemblies, and the two first feeding deviation rectifying assemblies can respectively clamp the two first pole pieces and can move along a width direction of the first pole pieces.
In one embodiment, each first feeding deviation rectifying assembly comprises two first deviation rectifying rollers which are arranged oppositely, the two first deviation rectifying rollers can move relatively to clamp the first pole piece, and one of the first deviation rectifying rollers is a driving roller.
In one embodiment, the feeding device further comprises a second feeding device, the second feeding device comprises a second clamping mechanism and a second cutting mechanism located at the downstream of the second clamping mechanism, the second clamping mechanism can clamp and convey two second pole pieces to the downstream, and the second cutting mechanism can cut off the two second pole pieces.
In one embodiment, the winding device further includes a turntable, and the plurality of winding needle mechanisms are disposed on the turntable, and the rotation of the turntable can drive the plurality of winding needle mechanisms to sequentially shift to positions where the first pole piece, the second pole piece, and the diaphragm can be obtained.
According to the battery cell manufacturing equipment, the first wide pole piece is divided into two parts after being cut by the first cutting mechanism to obtain two first pole pieces, and the first die cutting mechanism can be used for die cutting the first pole lug areas of the two first pole pieces into the multi-pole lug structure. After the second wide pole piece is processed by the second feeding device, the second wide pole piece can be divided into two parts to obtain two second pole pieces, and a multi-pole-lug structure is formed in the second pole lug areas of the two second pole pieces. The two first pole pieces and the two second pole pieces are aligned in a one-to-one correspondence mode and enter the winding device together with the diaphragm provided by the diaphragm feeding device. So, roll up needle mechanism and carry out once convoluteing alright two electric cores of shaping simultaneously, and the utmost point ear of electric core lies in same one side. Therefore, the production efficiency of the battery cell can be further improved by the battery cell manufacturing equipment.
A cell manufacturing apparatus comprising:
the first feeding device comprises a first unwinding mechanism and a first die cutting mechanism, wherein the first unwinding mechanism is used for unwinding a first wide pole piece, a first pole lug area extending in the length direction is arranged in the middle of the first wide pole piece, and the first die cutting mechanism can perform die cutting along the middle of the first pole lug area so as to cut the first wide pole piece into two first pole pieces and cut one side edge of each first pole piece into a multi-pole-lug structure;
the second feeding device comprises a second unwinding mechanism and a second die cutting mechanism, wherein the second unwinding mechanism is used for unwinding a second wide pole piece, a second pole lug area extending in the length direction is arranged in the middle of the second wide pole piece, the second die cutting mechanism can perform die cutting along the middle of the second pole lug area so as to cut the second wide pole piece into two second pole pieces, one side edge of each second pole piece is die-cut into a multi-pole-lug structure, and the two second pole pieces are respectively arranged in pairs with the two first pole pieces;
a diaphragm feeding device for providing diaphragms between and outside each pair of the first pole piece and the second pole piece; and
the winding device comprises a winding needle mechanism, and the winding needle mechanism can wind the two first pole pieces, the two second pole pieces and the plurality of diaphragms into two battery cells;
any one of the first pole piece and the second pole piece is a positive pole piece, and the other one is a negative pole piece.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a module structure of a cell manufacturing apparatus according to a preferred embodiment of the present invention;
fig. 2 is a simplified schematic diagram of a process for preparing a cell by the cell manufacturing apparatus shown in fig. 1;
fig. 3 is a schematic diagram of a module structure of a cell manufacturing apparatus according to another embodiment of the present invention;
fig. 4 is a simplified schematic diagram of a process for preparing a battery cell by the battery cell manufacturing apparatus shown in fig. 3.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 and fig. 2, a battery cell manufacturing apparatus 100 according to a preferred embodiment of the present invention includes a first feeding device 110, a second feeding device 120, a membrane feeding device 130, and a winding device 140.
The first feeding device 110 includes a first unwinding mechanism 111, a first cutting mechanism 112 and a first die-cutting mechanism 113. The first unwinding mechanism 111 is configured to unwind the first wide-width pole piece 10, and two side edges of the first wide-width pole piece 10 in the width direction have a first tab area 101 extending along the length direction. The width of the first wide-width pole piece 10 is approximately equal to twice the width of the pole pieces in the cell 40. The first wide pole piece 10 includes a foil and positive or negative active materials coated on the surfaces of both sides of the foil, and the active materials on both edges of the foil in the width direction are scraped or coated on the active materials to leave white in the area, so as to form a first tab area 101, and the first tab area 101 can be used for manufacturing a tab 41 of the manufactured battery cell 40.
The first slitting mechanism 112 can slit the first wide-width pole piece 10 by roll cutting, laser cutting or blade rotation cutting. The first slitting mechanism 112 can slit the first wide pole piece 10 into two first pole pieces 11 along the length direction. Specifically, the first slitting mechanism 11 generally performs slitting along the center line of the first wide pole piece 10, so the two obtained first pole pieces 11 have the same width. The transmission lines of the two first pole pieces 11 are generally provided with tension adjusting assemblies (not shown) respectively, and the tension adjusting assemblies are used for adjusting the tension of the two first pole pieces 11 respectively so as to ensure normal transmission.
Furthermore, one side edge of each first pole piece 11 has a first tab area 101, that is, after the original first wide pole piece 10 is cut, the first tab areas 101 on the two side edges of the original first wide pole piece are respectively located at the edges of the two first pole pieces 11. Further, the first tab regions 101 on the two first pole pieces 11 are arranged away from each other in the width direction, i.e., perpendicular to the plane of the drawing as shown in fig. 1.
In order to effectively separate the two first pole pieces 11 obtained by cutting, the interference generated in the subsequent process is avoided. Specifically, in this embodiment, the first feeding device 110 further includes a first separating mechanism 114, the first separating mechanism 114 includes two first separating rollers 1141 for supporting the two first pole pieces 11, respectively, and the rotating shafts of the two first separating rollers 1141 are disposed at an angle.
The two first pole pieces 11 obtained by slitting can pass through the two first separation rollers 1141 respectively, because the rotation axes of the two first separation rollers 1141 are not in the same straight line. Therefore, with the rotation of the first separating roller 1141, the two first pole pieces 11 are driven to be separated by a distance in the width direction, i.e. the direction perpendicular to the plane of the drawing shown in fig. 1.
The first die cutting mechanism 113 is capable of die cutting the first tab area 101 of each first pole piece 11 into a multi-tab configuration. Specifically, the first die cutting mechanism 113 generally includes two die cutting assemblies (not shown) for respectively die cutting the first tab areas 101 on the two side edges of the first wide pole piece 10, and the die cutting assemblies can implement die cutting by using a laser cutting method. Each die cutting assembly can die cut the corresponding first tab area 101 into a zigzag shape to obtain a plurality of tabs 41 arranged at intervals along the length direction of the first wide pole piece 10, so that the first tab area 101 forms a multi-tab structure.
Specifically, in this embodiment, the first dividing mechanism 112 is located downstream of the first die-cutting mechanism 113. That is, before the first wide pole piece 10 is slit by the first slitting mechanism 112, the first tab area 101 on both sides of the first wide pole piece 10 is die-cut by the first die-cutting mechanism 113. At this time, since the first wide pole piece 10 is not cut yet, the first tab areas 102 on both sides of the first wide pole piece are of an integral structure, so that the two die-cutting assemblies can be aligned with the first tab areas 101 on both sides more conveniently.
The second feeding device 120 includes a second unwinding mechanism 121, a second cutting mechanism 122 and a second die-cutting mechanism 123. The second unwinding mechanism 121 is configured to unwind the second wide pole piece 20, and two side edges of the second wide pole piece 20 in the width direction have a second tab region 201 extending along the length direction. The second slitting mechanism 122 can slit the second wide pole piece 20 into two second pole pieces 21 along the length direction, and one side edge of each second pole piece 21 has a second tab region 201. The second die cutting mechanism 123 is capable of die cutting the second tab area 201 of each second pole piece 21 into a multi-tab structure.
The second wide pole piece 20 has the same structure as the first wide pole piece 10, except that any one of the first wide pole piece 10 and the second wide pole piece 20 is a positive wide pole piece, and the other one is a negative wide pole piece, and the polarities of the active materials on the surfaces of the two pole pieces are different. Correspondingly, one of the first pole piece 11 and the second pole piece 21 is a positive pole piece, and the other is a negative pole piece. For the present embodiment, the first pole piece 11 is a positive pole piece, and the second pole piece 21 is a negative pole piece.
Similarly, in order to facilitate the alignment during the die cutting, in this embodiment, the second cutting mechanism 122 is located downstream of the second die cutting mechanism 123. In addition, in order to effectively separate the two second pole pieces 21 obtained by cutting, the interference between the two second pole pieces in the subsequent process is avoided. Specifically, in this embodiment, the second feeding device 120 further includes a second separating mechanism 124, the second separating mechanism 124 includes two second separating rollers 1241 for supporting the two second pole pieces 21, respectively, and the rotating shafts of the two second separating rollers 1241 are disposed at an angle.
It should be noted that the structures of the first feeding device 110 and the second feeding device 120 may be completely the same, so the present disclosure will focus on describing the structure of the first feeding device 110, and the second feeding device 120 may refer to the first feeding device 110, and will not be described again.
Further, the two second pole pieces 21 made by the second feeding device 120 are arranged in pairs with the two first pole pieces 11 made by the first feeding device 110. The second pole piece 21 is aligned with the pair of first pole pieces 11 in the width direction, i.e., the direction perpendicular to the plane of the drawing as shown in fig. 1.
The diaphragm feeding device 130 is used to feed the diaphragm 30 between and outside each pair of the first pole piece 11 and the second pole piece 21. Specifically, for each pair of the first pole piece 11 and the second pole piece 21, the diaphragm 130 is disposed therebetween, and the diaphragm 130 is disposed on the outer side of the first pole piece 11 or the second pole piece 21. The membrane supply device 130 may use unwinding shafts 131 to unwind the membranes 30, and the number of the unwinding shafts 131 may be set according to the number of the membranes 30 to be supplied. A tension control mechanism (not shown) is provided on the transport path of each diaphragm 30, and can be used to control the tension of each of the plurality of diaphragms 30. For the present embodiment, the membrane feeding device 130 needs to provide four membranes 30, so the membrane feeding device 130 includes four unwinding shafts 131.
The first pole piece 11 is aligned with the pair of second pole pieces 21. Specifically, in the width direction of the first pole piece 11 and the second pole piece 21, i.e. the direction perpendicular to the plane of the drawing shown in fig. 1, the two side edges of the first pole piece 11 and the second pole piece 21 are aligned.
In order to improve the alignment accuracy of the first pole piece 11 and the second pole piece 21, in this embodiment, the first feeding device 110 further includes a first process deviation rectifying mechanism 115, the first process deviation rectifying mechanism 115 includes two first process deviation rectifying assemblies (not shown), and each first process deviation rectifying assembly can rectify the deviation of the first pole piece 11 passing around. Specifically, the first process deviation rectifying assembly can adopt the snake-shaped deviation rectifying assembly and other existing deviation rectifying assemblies to rectify the deviation of the first pole piece 11 from multiple aspects such as height and angle.
For the same reason, in this embodiment, the second feeding device 120 further includes a second process deviation rectifying mechanism 125, and the second process deviation rectifying mechanism 125 includes two second process deviation rectifying assemblies (not shown), and each of the second process deviation rectifying assemblies can rectify the second pole piece passing around. The second process deviation rectification mechanism 125 can have the same structure as the first process deviation rectification mechanism 115, and thus is not described in detail.
The winding device 140 includes a winding needle mechanism 141. The needle winding mechanism 141 can wind the two first pole pieces 11, the two second pole pieces 21, and the plurality of separators 30 into two battery cells 40. Specifically, when the two first pole pieces 11, the two second pole pieces 21 and the plurality of diaphragms 30 enter the winding device 140, the two first pole pieces 11, the two second pole pieces 21 and the plurality of diaphragms 30 are divided into two groups of tapes, wherein one group of tapes comprises one first pole piece 11, one second pole piece 21 paired with the one first pole piece 11 and the two diaphragms 30, and the other group of tapes comprises the other first pole piece 11, the other second pole piece 21 paired with the one first pole piece 11 and the two diaphragms 30. Moreover, the winding start ends of the two sets of material tapes are spaced in the longitudinal direction of the winding needle mechanism 141, i.e., the direction perpendicular to the plane of the drawing sheet shown in fig. 1.
At this moment, when the winding needle mechanism 141 rotates, the two sets of material tapes are driven to simultaneously wind, so that the two battery cores 40 are simultaneously molded, and the two battery cores 40 obtained by winding are arranged at intervals in the longitudinal direction of the winding needle mechanism 141. Moreover, the first tab region 101 on the first pole piece 11 and the second tab region 201 on the second pole piece 21 are located on the same side due to the alignment. Therefore, the tabs 41 of the wound battery cells 40 will also be located on the same side.
In this embodiment, the winding device 140 further includes a rotating disc 142, the plurality of winding needle mechanisms 141 are disposed on the rotating disc 142, and the rotating disc 142 rotates to drive the plurality of winding needle mechanisms 141 to sequentially shift to positions where the first pole piece 11, the second pole piece 21 and the diaphragm 30 can be obtained.
The turntable 142 can be connected to a driving mechanism such as a motor, and can rotate a certain angle each time under the driving of the driving mechanism. After the first two battery cells 40 are completely wound, the turntable 142 rotates and rotates the next needle winding mechanism 141 to the winding station (i.e., the positions of the first pole piece 11, the second pole piece 21 and the diaphragm 30 can be obtained); then, the next winding needle mechanism 141 extends out and fixes the winding start ends of the two groups of material belts; after the first two cells 40 are cut from the end of the tape, the next winding needle mechanism 141 can perform winding to prepare the other two cells 40. By analogy, the plurality of needle winding mechanisms 141 can alternately enter the winding station and wind the battery cell 40, so that the production takt can be improved to reduce the waiting time, and the production efficiency is further improved.
In order to enable the two battery cells 40 to be wound on the winding needle mechanism 141 at the same time, the length of the winding needle mechanism 141 in this embodiment needs to be significantly extended compared to the winding needle mechanism in the prior art. Obviously, in other embodiments, the winding device 140 may also be provided with two rotating discs 142 and a plurality of winding needle mechanisms 141 located on the rotating discs 142. The two turntables 142 are provided with the opposite sides of the needle winding mechanisms 141, the needle winding mechanisms 141 are in one-to-one correspondence, and the two turntables 142 can rotate synchronously. When winding, the winding start ends of the two sets of tapes may be respectively located on the two winding needle mechanisms 141 corresponding to each other, so that the two battery cells 40 will be wound on the two winding needle mechanisms 140 different from each other.
Referring to fig. 1 again, in the present embodiment, the battery cell manufacturing apparatus 100 further includes a first feeding device 150, the first feeding device 150 includes a first clamping mechanism 151 and a first cutting mechanism 152 located downstream of the first clamping mechanism 151, the first clamping mechanism 151 can clamp and convey two first pole pieces 11 downstream, and the first cutting mechanism 152 can cut off the two first pole pieces 11.
The first clamping mechanism 151 may employ two oppositely disposed nip rollers that can be brought close to each other to simultaneously clamp the two first pole pieces 11. The first clamping mechanism 151 can clamp the two first pole pieces 11 and then convey the two first pole pieces to the downstream, namely, the winding device 140, so that the two first pole pieces 11 can smoothly enter the needle winding mechanism 141, and the winding process can be continuously carried out. Specifically, after the winding of the two battery cells 40 is completed, the first clamping mechanism 151 simultaneously clamps the two first pole pieces 11, and the first cutting mechanism 152 simultaneously cuts off the two first pole pieces 11. Then, the first clamping mechanism 151 inserts the two clamped first pole pieces 11 into the next winding mechanism 141 at the same time, and the winding process can be continued.
Further, in this embodiment, the first feeding device 150 further includes a first feeding deviation rectifying mechanism 153 located at the downstream of the first cutting mechanism 152, the first feeding deviation rectifying mechanism 153 includes two first feeding deviation rectifying assemblies (not shown), and the two first feeding deviation rectifying assemblies can respectively clamp the two first pole pieces 11 and can move along the width direction of the first pole pieces 11.
Two first pan feeding components of rectifying are along the direction on perpendicular to drawing plane, 11 width direction intervals of first pole piece promptly. The two first feeding deviation rectifying assemblies can further adjust the positions of the two first pole pieces 11, so that the first pole pieces 11 can keep high alignment precision with the diaphragms 30 and the second pole pieces 21 in the same group of material belts, and the quality of the battery cell 40 is improved.
Specifically, in this embodiment, each first feeding deviation rectifying assembly includes two first deviation rectifying rollers 1531 disposed oppositely, the two first deviation rectifying rollers 1531 can move relatively to clamp the first pole piece 11, and one of the first deviation rectifying rollers 1531 is a driving roller.
After the deviation rectification is completed, the first deviation rectification roller 1531 serving as a driving roller can rotate around the axis thereof and drive the clamped first pole piece 11 to be conveyed towards the needle winding mechanism 141. That is to say, the first clamping mechanism 151 only needs to send two first pole pieces 11 into two first feeding deviation rectifying assemblies at the same time.
In order to smoothly feed the two second pole pieces 21 into the winding needle mechanism 141, specifically in this embodiment, the battery cell manufacturing apparatus further includes a second feeding device 160, the second feeding device 160 includes a second clamping mechanism 161 and a second cutting mechanism 162 located downstream of the second clamping mechanism 161, the second clamping mechanism 161 can clamp the two second pole pieces 21 and convey the two second pole pieces downstream, and the second cutting mechanism 162 can cut off the two second pole pieces 21.
The second feeding device 160 also includes a second feeding deviation correcting mechanism 163. It should be noted that the structure and the operation principle of the second material feeding device 160 can be completely the same as those of the first material feeding device 150, and therefore, the description thereof is omitted.
In the above battery cell manufacturing apparatus 100, the first wide pole piece 10 is cut by the first cutting mechanism 112 and then divided into two to obtain two first pole pieces 11, and the first die-cutting mechanism 113 can die-cut the first tab areas 101 of the two first pole pieces 11 into a multi-tab structure. After the second wide pole piece 20 is processed by the second feeding device 120, it can also be divided into two to obtain two second pole pieces 21, and a multi-pole-tab structure is formed in the second pole tab area 201 of the two second pole pieces 21. The two first pole pieces 11 are aligned with the two second pole pieces 21 in a one-to-one correspondence, and enter the winding device 140 together with the separator supplied from the separator supply device 130. Thus, the winding needle mechanism 141 can simultaneously form two battery cells 40 by winding once, and the tabs 41 of the battery cells 40 are located on the same side. Therefore, the above-described cell manufacturing apparatus 100 can further improve the production efficiency of the battery cell 40.
Referring to fig. 3 and fig. 4, a battery cell manufacturing apparatus 100 according to another embodiment of the present invention includes a first feeding device 110, a second feeding device 120, a membrane feeding device 130, and a winding device 140.
The first feeding device 110 includes a first unwinding mechanism 111 and a first die-cutting mechanism 113. The first unwinding mechanism 211 is configured to unwind the first wide pole piece 10', and a first tab region 101' extending in the length direction is disposed in the middle of the first wide pole piece 10 '. Compared with the first wide pole piece 10 in the previous embodiment, the first wide pole piece 10' has a different tab region position, and the rest of the structure is the same.
The first die-cutting mechanism 113 can perform die-cutting along the middle of the first tab region 101 'to cut the first wide-width pole piece 10' into two first pole pieces 11', and die-cut one side edge of each first pole piece 11' into a multi-tab structure. The first die cutting mechanism 113 has a different position of two die cutting assemblies than the first die cutting mechanism 113 of the previous embodiment, and the two die cutting assemblies can die cut along the middle of the first tab area 101 'and divide the first tab area 101' into two. In this way, the first wide pole piece 10' will also be divided into two, and one side of the two first pole pieces 11' obtained will have the first tab region 101'. Meanwhile, the two die cutting assemblies can also die cut the two divided first tab areas 101' into zigzag shapes, so that the first tab area 101' of each first pole piece 11' forms a multi-tab structure.
The first tab regions 101 'on the two first pole pieces 11' die-cut by the first die-cutting mechanism 113 are arranged opposite to each other in the width direction, i.e., the direction perpendicular to the plane of the drawing shown in fig. 1.
The second feeding device 120 includes a second unwinding mechanism 121 and a second die-cutting mechanism 123. The second unwinding mechanism 121 is configured to unwind the second wide pole piece 20', and a second tab region 201' extending along the length direction is disposed in the middle of the second wide pole piece 20 '. The second die cutting mechanism 123 can perform die cutting along the middle portion of the second tab region 201 'to cut the second wide-width pole piece 20' into two second pole pieces 21', and die cut one side edge of each second pole piece 21' into a multi-tab structure.
Similarly, the second wide pole piece 20 'has the same structure as the first wide pole piece 10', and is different in that either one of the first wide pole piece 10 'and the second wide pole piece 20' is a positive wide pole piece, and the other is a negative wide pole piece. Moreover, the first and second supply devices 110 and 120 may have the same structure.
Further, two second pole pieces 21 'are arranged in pairs with the two first pole pieces 11'. Wherein the second pole piece 21 'is aligned with the pair of first pole pieces 11' in the width direction, i.e., the direction perpendicular to the plane of the drawing as shown in fig. 1.
The membrane supply device 130 is used to supply the membrane 30 between and outside each pair of the first pole piece 11 'and the second pole piece 21'. The winding device 140 includes a winding mechanism 141, and the winding mechanism 141 can wind the two first pole pieces 11', the two second pole pieces 21' and the plurality of separators 30 into two battery cells 40'.
Compared with the battery cell manufacturing apparatus 100 in the previous embodiment, the structure and function of the diaphragm feeding device 130 and the winding device 140 of the battery cell manufacturing apparatus 100 may be completely the same, and the differences are: in this embodiment, neither the first feeding device 110 nor the second feeding device 120 includes a slitting mechanism, and the first feeding device 110 and the second feeding device 120 do not slit the first wide-width pole piece 10 'and the second wide-width pole piece 20' when processing the first wide-width pole piece and the second wide-width pole piece, but divide the wide-width pole pieces into two parts while die-cutting the multi-tab structure. In this way, the structure of the apparatus can be simplified.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An electrical core manufacturing apparatus, comprising:
the first feeding device comprises a first unwinding mechanism, a first cutting mechanism and a first die cutting mechanism, wherein the first unwinding mechanism is used for unwinding a first wide-width pole piece, two side edges of the first wide-width pole piece in the width direction are provided with first tab areas extending in the length direction, the first cutting mechanism can cut the first wide-width pole piece into two first pole pieces in the length direction, one side edge of each first pole piece is provided with the first tab area, and the first die cutting mechanism can die-cut the first tab area of each first pole piece into a multi-tab structure;
the second feeding device comprises a second unwinding mechanism, a second slitting mechanism and a second die cutting mechanism, wherein the second unwinding mechanism is used for unwinding a second wide-width pole piece, two side edges in the width direction of the second wide-width pole piece are provided with a second tab area extending along the length direction, the second slitting mechanism can slit the second wide-width pole piece into two second pole pieces along the length direction, one side edge of each second pole piece is provided with the second tab area, the second die cutting mechanism can die-cut the second tab area of each second pole piece into a multi-tab structure, and the two second pole pieces are respectively arranged in pairs with the two first pole pieces;
a diaphragm feeding device for providing diaphragms between and outside each pair of the first pole piece and the second pole piece; and
the winding device comprises a winding needle mechanism, and the winding needle mechanism can wind the two first pole pieces, the two second pole pieces and the plurality of diaphragms into two battery cells;
any one of the first pole piece and the second pole piece is a positive pole piece, and the other one is a negative pole piece.
2. The cell manufacturing apparatus of claim 1, wherein the first slitting mechanism is located downstream of the first die-cutting mechanism; the second slitting mechanism is located downstream of the second die-cutting mechanism.
3. The battery cell manufacturing equipment according to claim 1, wherein the first feeding device further comprises a first separation mechanism, the first separation mechanism comprises two first separation rollers for supporting the two first pole pieces, and rotation axes of the two first separation rollers are arranged at an angle; the second feeding device further comprises a second separating mechanism, the second separating mechanism comprises two second separating rollers which are used for supporting the second pole pieces respectively, and the rotating shafts of the second separating rollers are arranged at an angle.
4. The battery cell manufacturing equipment according to claim 1, wherein the first feeding device further comprises a first process deviation rectifying mechanism, the first process deviation rectifying mechanism comprises two first process deviation rectifying assemblies, and each first process deviation rectifying assembly can rectify the first wound pole piece; the second feeding device further comprises a second process deviation rectifying mechanism, the second process deviation rectifying mechanism comprises two second process deviation rectifying assemblies, and each second process deviation rectifying assembly can rectify the second pole piece which winds the warp.
5. The battery cell manufacturing apparatus according to claim 1, further comprising a first feeding device, wherein the first feeding device includes a first clamping mechanism and a first cutting mechanism located downstream of the first clamping mechanism, the first clamping mechanism is capable of clamping and conveying two first pole pieces downstream, and the first cutting mechanism is capable of cutting off two first pole pieces.
6. The cell manufacturing apparatus according to claim 5, wherein the first feeding device further comprises a first feeding deviation rectifying mechanism located downstream of the first cutting mechanism, and the first feeding deviation rectifying mechanism comprises two first feeding deviation rectifying assemblies, and the two first feeding deviation rectifying assemblies can respectively clamp the two first pole pieces and can move in a width direction of the first pole pieces.
7. The battery core manufacturing equipment according to claim 6, wherein each first feeding deviation rectifying assembly comprises two first deviation rectifying rollers which are arranged oppositely, the two first deviation rectifying rollers can move relatively to clamp the first pole piece, and one of the first deviation rectifying rollers is a driving roller.
8. The battery cell manufacturing apparatus according to claim 1, further comprising a second feeding device, where the second feeding device includes a second clamping mechanism and a second cutting mechanism located downstream of the second clamping mechanism, the second clamping mechanism is capable of clamping and conveying two second pole pieces downstream, and the second cutting mechanism is capable of cutting off two second pole pieces.
9. The battery cell manufacturing apparatus according to claim 1, wherein the winding device further includes a turntable, and the plurality of winding needle mechanisms are disposed on the turntable, and the rotation of the turntable can drive the plurality of winding needle mechanisms to sequentially shift to positions where the first pole piece, the second pole piece, and the separator can be obtained.
10. An electrical core manufacturing apparatus, comprising:
the first feeding device comprises a first unwinding mechanism and a first die cutting mechanism, wherein the first unwinding mechanism is used for unwinding a first wide pole piece, a first pole lug area extending in the length direction is arranged in the middle of the first wide pole piece, and the first die cutting mechanism can perform die cutting along the middle of the first pole lug area so as to cut the first wide pole piece into two first pole pieces and cut one side edge of each first pole piece into a multi-pole-lug structure;
the second feeding device comprises a second unreeling mechanism and a second die cutting mechanism, wherein the second unreeling mechanism is used for unreeling a second wide pole piece, the middle part of the second wide pole piece is provided with a second pole lug area extending along the length direction, the second die cutting mechanism can perform die cutting along the middle part of the second pole lug area so as to cut the second wide pole piece into two second pole pieces, one side edge of each second pole piece is die-cut into a multi-pole lug structure, and the two second pole pieces are respectively arranged in pairs with the two first pole pieces;
a diaphragm feeding device for providing diaphragms between and outside each pair of the first pole piece and the second pole piece; and
the winding device comprises a winding needle mechanism, and the winding needle mechanism can wind the two first pole pieces, the two second pole pieces and the plurality of diaphragms into two battery cells;
any one of the first pole piece and the second pole piece is a positive pole piece, and the other one is a negative pole piece.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220518466.0U CN218039357U (en) | 2022-03-10 | 2022-03-10 | Battery cell manufacturing equipment |
| PCT/CN2023/077862 WO2023169218A1 (en) | 2022-03-10 | 2023-02-23 | Battery cell manufacturing apparatus and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220518466.0U CN218039357U (en) | 2022-03-10 | 2022-03-10 | Battery cell manufacturing equipment |
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| CN218039357U true CN218039357U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220518466.0U Active CN218039357U (en) | 2022-03-10 | 2022-03-10 | Battery cell manufacturing equipment |
Country Status (2)
| Country | Link |
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| CN (1) | CN218039357U (en) |
| WO (1) | WO2023169218A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023169219A1 (en) * | 2022-03-10 | 2023-09-14 | 无锡先导智能装备股份有限公司 | Battery cell manufacturing device and preparation method |
| WO2023169218A1 (en) * | 2022-03-10 | 2023-09-14 | 无锡先导智能装备股份有限公司 | Battery cell manufacturing apparatus and preparation method |
| WO2023173931A1 (en) * | 2022-03-18 | 2023-09-21 | 宁德时代新能源科技股份有限公司 | Winding apparatus and method |
| WO2024169129A1 (en) * | 2023-02-13 | 2024-08-22 | 无锡先导智能装备股份有限公司 | Slitting apparatus |
| WO2025055547A1 (en) * | 2023-09-15 | 2025-03-20 | 合肥国轩高科动力能源有限公司 | Electrode sheet slitting and winding method and device |
| WO2025060651A1 (en) * | 2023-09-21 | 2025-03-27 | 无锡先导智能装备股份有限公司 | Waste sheet removal mechanism, winding apparatus, and battery cell |
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| CN117566481A (en) * | 2023-12-28 | 2024-02-20 | 阡陌新材料(江阴)有限公司 | A multi-layer unwinding device and unwinding method |
| CN222813625U (en) * | 2024-05-28 | 2025-04-29 | 宁德时代新能源科技股份有限公司 | Winding device and battery production equipment |
| CN119400975B (en) * | 2024-12-11 | 2025-05-02 | 德州东鸿制膜科技有限公司 | A lithium battery diaphragm winding core coating device and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011081964A (en) * | 2009-10-05 | 2011-04-21 | Toshiba Corp | Manufacturing device of electrode, manufacturing method of electrode, electrode, and nonaqueous electrolyte battery |
| CN105789675B (en) * | 2016-03-17 | 2018-10-02 | 深圳吉阳智云科技有限公司 | A kind of electric core winding mechanism |
| CN106827059B (en) * | 2017-03-20 | 2018-09-28 | 力信（江苏）能源科技有限责任公司 | A kind of integrated film-making cutting die of pole piece cross cutting cutting and its flaking method |
| CN208674259U (en) * | 2018-09-18 | 2019-03-29 | 宁德时代新能源科技股份有限公司 | Pole piece forming device |
| CN111660015A (en) * | 2020-06-18 | 2020-09-15 | 昆山聚创新能源科技有限公司 | Laser die cutting method for pole piece |
| CN113131009B (en) * | 2021-04-21 | 2023-02-21 | 深圳吉阳智能科技有限公司 | Continuous winding device |
| CN113675372B (en) * | 2021-07-13 | 2022-12-02 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN218039357U (en) * | 2022-03-10 | 2022-12-13 | 无锡先导智能装备股份有限公司 | Battery cell manufacturing equipment |
-
2022
- 2022-03-10 CN CN202220518466.0U patent/CN218039357U/en active Active
-
2023
- 2023-02-23 WO PCT/CN2023/077862 patent/WO2023169218A1/en not_active Ceased
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023169219A1 (en) * | 2022-03-10 | 2023-09-14 | 无锡先导智能装备股份有限公司 | Battery cell manufacturing device and preparation method |
| WO2023169218A1 (en) * | 2022-03-10 | 2023-09-14 | 无锡先导智能装备股份有限公司 | Battery cell manufacturing apparatus and preparation method |
| WO2023173931A1 (en) * | 2022-03-18 | 2023-09-21 | 宁德时代新能源科技股份有限公司 | Winding apparatus and method |
| WO2024169129A1 (en) * | 2023-02-13 | 2024-08-22 | 无锡先导智能装备股份有限公司 | Slitting apparatus |
| WO2025055547A1 (en) * | 2023-09-15 | 2025-03-20 | 合肥国轩高科动力能源有限公司 | Electrode sheet slitting and winding method and device |
| WO2025060651A1 (en) * | 2023-09-21 | 2025-03-27 | 无锡先导智能装备股份有限公司 | Waste sheet removal mechanism, winding apparatus, and battery cell |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023169218A1 (en) | 2023-09-14 |
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