CN112355120A - Pole piece pressing and cutting device - Google Patents
Pole piece pressing and cutting device Download PDFInfo
- Publication number
- CN112355120A CN112355120A CN202011288481.2A CN202011288481A CN112355120A CN 112355120 A CN112355120 A CN 112355120A CN 202011288481 A CN202011288481 A CN 202011288481A CN 112355120 A CN112355120 A CN 112355120A
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- roller
- cutting
- pole piece
- crush
- cutting device
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- 238000005520 cutting process Methods 0.000 title claims abstract description 133
- 238000003825 pressing Methods 0.000 title claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims description 71
- 230000007246 mechanism Effects 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 208000002874 Acne Vulgaris Diseases 0.000 description 2
- 208000020154 Acnes Diseases 0.000 description 2
- 206010000496 acne Diseases 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/12—Punching using rotatable carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/20—Applications of drives for reducing noise or wear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
- B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
- B21D45/04—Ejecting devices interrelated with motion of tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a pole piece press-cutting device, and relates to the technical field of battery cell production. This pole piece pressure cutting device includes base, pressure cutting roller, spacing roller and first driving piece. The pressure cutting roller and the limiting roller are arranged at intervals in parallel and are both rotatably installed on the base, a material passing cavity for the pole piece to pass through is formed between the pressure cutting roller and the limiting roller, the first driving piece is in transmission connection with the pressure cutting roller, roller cutters are arranged on the peripheral surface of the pressure cutting roller and are used for abutting against the limiting roller when the first driving piece drives the pole piece to pass through the material passing cavity through the pressure cutting roller, and therefore crease holes are cut out on the pole piece. Compared with the prior art, the pole piece pressing and cutting device provided by the invention adopts the pressing and cutting roller and the limiting roller which are arranged in parallel at intervals and the roller cutter arranged on the pressing and cutting roller, so that crease holes can be cut on the anode piece, the anode piece can be laminated under the condition of continuous non-cutting, the short circuit of a battery cell caused by piercing a diaphragm is avoided, and the energy density of the battery cell is improved.
Description
Technical Field
The invention relates to the technical field of battery cell production, in particular to a pole piece press-cutting device.
Background
With the rapid rise of new energy automobiles, the demand of vehicle enterprises on high-quality batteries is urgent, and the higher the energy density of a battery cell is, the longer the endurance mileage of the automobile is. In the current production process of the battery cell, the anode sheet needs to be cut off first and then laminated, so that acne generated when the anode sheet is cut off easily pierces through the diaphragm, thereby causing the problem of short circuit of the battery cell, and the energy density of the battery cell is generally not high because the anode sheet is discontinuous.
In view of this, it is very important to design and manufacture a pole piece pressing and cutting device capable of cutting a crease hole, especially in the production of a cell.
Disclosure of Invention
The invention aims to provide a pole piece press-cutting device which can cut crease holes on an anode piece so that the anode piece can be laminated without being continuously cut, the short circuit of a battery cell caused by piercing a diaphragm is avoided, and the energy density of the battery cell is improved.
The invention is realized by adopting the following technical scheme.
The utility model provides a pole piece crush-cutting device, which comprises a base, the crush-cutting roller, spacing roller and first driving piece, crush-cutting roller and the parallel interval setting of spacing roller, and all rotationally install on the base, form the punishment in advance cavity that is used for supplying the pole piece to pass between crush-cutting roller and the spacing roller, first driving piece is connected with the crush-cutting roller transmission, be provided with the roller sword on the global of crush-cutting roller, the roller sword is used for driving the pole piece through the crush-cutting roller and supports with spacing roller when passing the punishment in advance cavity, in order to cut out the crease hole on the pole piece.
Furthermore, the number of the roller cutters is multiple, and the roller cutters are arranged in parallel at intervals along the axial direction of the press-cutting roller.
Further, the roll sword is a plurality of, and a plurality of roll sword is set up on the global of pinch roll in annular array.
Further, the roller cutter is in a long strip shape, and the length direction of the roller cutter is the same as the axial direction of the pressure cutting roller.
Furthermore, the pole piece pressing and cutting device further comprises a waste discharge thimble, a containing hole is formed in the free end of the roller knife, the waste discharge thimble is installed in the containing hole and can be retracted into the containing hole when the roller knife rotates to be abutted against the limiting roller, and the waste discharge thimble can also extend out of the containing hole when the roller knife rotates to be separated from the limiting roller and can eject waste materials in the crease hole.
Furthermore, the waste discharge thimble comprises a thimble body and an elastic piece, the elastic piece is arranged in the accommodating hole, one end of the elastic piece is connected with the roller cutter, the other end of the elastic piece is connected with the thimble body, and the thimble body can stretch out of or retract into the accommodating hole.
Further, the pole piece pressing and cutting device further comprises a waste discharge mechanism, the waste discharge mechanism is installed on the base, and the waste discharge mechanism is used for sucking waste generated by the crease line cutting holes.
Further, the waste discharge mechanism comprises an air pump and a waste discharge box, the air pump is communicated with the waste discharge box, the waste discharge box is provided with a suction inlet, and the position of the suction inlet corresponds to the position of the material passing cavity.
Further, the pole piece pressing and cutting device further comprises a pressing wheel, the pressing wheel is rotatably installed on the base and abuts against the pressing and cutting roller, and the pressing wheel is used for limiting the pressing and cutting roller.
Further, the pole piece pressing and cutting device further comprises a second driving piece, the second driving piece is in transmission connection with the limiting roller, and the rotating direction of the limiting roller is opposite to that of the pressing and cutting roller.
The pole piece press-cutting device provided by the invention has the following beneficial effects:
the pole piece press-cutting device provided by the invention has the advantages that the press-cutting roller and the limiting roller are arranged in parallel at intervals and are both rotatably arranged on the base, a material passing cavity for a pole piece to pass through is formed between the press-cutting roller and the limiting roller, the first driving piece is in transmission connection with the press-cutting roller, the peripheral surface of the press-cutting roller is provided with the roller cutter, and the roller cutter is used for abutting against the limiting roller when the first driving piece drives the pole piece to pass through the material passing cavity through the press-cutting roller so as to cut a crease hole on the pole piece. Compared with the prior art, the pole piece pressing and cutting device provided by the invention adopts the pressing and cutting roller and the limiting roller which are arranged in parallel at intervals and the roller cutter arranged on the pressing and cutting roller, so that crease holes can be cut on the anode piece, the anode piece can be laminated under the condition of continuous non-cutting, the short circuit of a battery cell caused by piercing a diaphragm is avoided, and the energy density of the battery cell is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a pole piece press-cutting device for press-cutting an anode piece according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pole piece press-cutting device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an anode sheet after being cut by the pole piece cutting device according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a view angle of a press-cutting roller in the pole piece press-cutting device according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of another view angle of the press-cutting roller in the pole piece press-cutting device according to the embodiment of the present invention;
FIG. 6 is a schematic view of the connection between the roller blade and the waste ejector pin in FIG. 5;
fig. 7 is a schematic structural diagram of a waste discharge mechanism in the pole piece press-cutting device according to the embodiment of the present invention.
Icon: 100-pole piece pressing and cutting device; 110-a base; 120-a press-cutting roller; 121-a roller cutter; 122-a containment hole; 130-a spacing roller; 140-a first drive member; 150-a second drive member; 160-waste discharge thimble; 161-thimble body; 162-an elastic member; 163-a push-out; 164-a stop portion; 170-a waste disposal mechanism; 171-air pump; 172-waste cartridge discharge; 173-suction inlet; 180-pinch rollers; 190-a material passing cavity; 200-an anode sheet; 210-crease hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, an embodiment of the present invention provides a pole piece pressing and cutting device 100 for pressing and cutting a pole piece. It can cut out crease hole 210 on anode strip 200 to make anode strip 200 carry out the lamination under the condition of not cutting off in succession, avoid impaling the diaphragm and cause the short circuit of electricity core, improve the energy density of electricity core.
In this embodiment, the pole piece pressing and cutting device 100 is applied to the production process of the battery cell, the pole piece pressing and cutting device 100 is used for cutting the crease hole 210 on the anode sheet 200, so that the anode sheet 200 can be folded along the straight line where the crease hole 210 is located, thereby realizing the lamination action, thus avoiding the procedure of cutting off the anode sheet 200, avoiding the generation of acnes on the anode sheet 200, preventing the acnes from piercing the diaphragm to cause the short circuit of the battery cell, and because the anode sheet 200 is continuous at this time, the energy density of the battery cell can be greatly improved. But not limited thereto, in other embodiments, the pole piece pressing and cutting device 100 can also be used for cutting the crease hole 210 on the cathode piece, and the application scenario of the pole piece pressing and cutting device 100 is not particularly limited.
The pole piece press-cutting device 100 comprises a base 110, a press-cutting roller 120, a limiting roller 130, a first driving member 140, a second driving member 150, a waste discharge thimble 160, a waste discharge mechanism 170 and a pinch roller 180. Wherein, the pressure cutting roller 120, the limit roller 130, the waste discharging mechanism 170 and the pinch roller 180 are all installed on the base 110. The pressure cutting roller 120 and the limiting roller 130 are arranged in parallel at intervals and are rotatably arranged on the base 110, and the pressure cutting roller 120 and the limiting roller 130 can rotate relative to the base 110. The first driving member 140 is in transmission connection with the pressure cutting roller 120, and the first driving member 140 can drive the pressure cutting roller 120 to rotate. The second driving member 150 is in transmission connection with the limiting roller 130, and the second driving member 150 can drive the limiting roller 130 to rotate. A material passing cavity 190 for the anode sheet 200 to pass through is formed between the press-cutting roller 120 and the limiting roller 130, and the anode sheet 200 can be driven by the press-cutting roller 120 and the limiting roller 130 to translate and feed. The pinch roller 180 is rotatably mounted on the base 110 and abuts against the pinch roller 120, and the pinch roller 180 can rotate relative to the pinch roller 120 to compress and limit the pinch roller 120 and prevent the pinch roller 120 from moving along the radial direction.
It should be noted that the circumferential surface of the press-cutting roller 120 is provided with a roller knife 121, and the roller knife 121 is used for abutting against the limiting roller 130 when the first driving member 140 drives the pole piece to pass through the material passing cavity 190 through the press-cutting roller 120, so as to cut a crease hole 210 on the anode sheet 200. The waste discharge thimble 160 is mounted on the roller blade 121, and the waste discharge thimble 160 is used for ejecting waste materials in the crease hole 210. The waste discharging mechanism 170 is used for sucking the waste ejected from the waste discharging thimble 160, that is, the waste discharging mechanism 170 is used for sucking the waste generated by the crease cutting hole 210, so as to prevent the waste from being attached to the anode sheet 200.
In this embodiment, the first driving member 140 drives the pressing and cutting roller 120 to rotate towards the first direction, the second driving member 150 drives the limiting roller 130 to rotate towards the second direction, the first direction is opposite to the second direction, that is, the rotation direction of the pressing and cutting roller 120 is opposite to the rotation direction of the limiting roller 130, and the pressing and cutting roller 120 and the limiting roller 130 act together to drive the anode sheet 200 to pass through the material passing cavity 190. Specifically, the rotation speed of the pinch roll 120 is the same as that of the limiting roll 130, and the rotation speed is kept unchanged, so that the anode sheet 200 moves at a constant speed, the same distance between the plurality of crease holes 210 cut in the anode sheet 200 is ensured, the lamination precision is improved, and the requirement of high-speed lamination is met.
In this embodiment, the first driving member 140 and the second driving member 150 are both electric motors, but not limited thereto, and in other embodiments, the first driving member 140 and the second driving member 150 may be both hydraulic motors or both pneumatic motors, and the types of the first driving member 140 and the second driving member 150 are not particularly limited.
It should be noted that at least one set of roller knives 121 is disposed on the circumferential surface of the press-cutting roller 120, the number of the roller knives 121 in each set is multiple, the plurality of roller knives 121 in each set are disposed in parallel and at intervals along the axial direction of the press-cutting roller 120 to cut multiple sets of crease holes 210 on the anode sheet 200, the number of the crease holes 210 in each set is multiple, and the plurality of crease holes 210 in each set are disposed in parallel and at intervals on the anode sheet 200.
Specifically, the roller knife 121 is long, the length direction of the roller knife 121 is the same as the axial direction of the pressure cutting roller 120, the roller knives 121 in each group are located on the same straight line, so that the crease holes 210 formed in the anode sheet 200 are rectangular holes, the length of the crease holes 210 is far greater than the width of the crease holes 210, the crease holes 210 in each group are located on the same straight line, the straight line is a crease line, and the anode sheet 200 can be folded along the crease line to realize lamination operation.
In this embodiment, three sets of roller knives 121 are disposed on the circumferential surface of the pressure cutting roller 120, the number of each set of roller knives 121 is five, the five roller knives 121 in each set are located on the same straight line, and the three sets of roller knives 121 are disposed on the circumferential surface of the pressure cutting roller 120 in an annular array. When the first driving member 140 drives the pressing and cutting roller 120 to rotate for one circle, the pressing and cutting roller 120 can cut three sets of crease holes 210 on the anode sheet 200, where the number of each set of crease holes 210 is five, that is, three crease lines are formed on the anode sheet 200. When the first driving member 140 drives the pressing and cutting roller 120 to rotate for two cycles, the pressing and cutting roller 120 can cut six sets of crease holes 210 on the anode sheet 200, i.e. six crease lines are formed on the anode sheet 200. However, the present invention is not limited to this, and in other embodiments, only one set of the roller blades 121 may be provided on the circumferential surface of the press cutting roller 120, five sets of the roller blades 121 may be provided, the number of the roller blades 121 in each set may be four or six, and the number of the sets of the roller blades 121 provided on the circumferential surface of the press cutting roller 120 and the number of each set are not particularly limited.
Referring to fig. 5, it should be noted that the free end of the roller knife 121 is provided with an accommodating hole 122, and the waste discharging thimble 160 is installed in the accommodating hole 122. The waste discharge thimble 160 can be retracted into the accommodating hole 122 when the roller knife 121 rotates to abut against the limiting roller 130, so that the roller knife 121 cuts a crease hole 210 on the anode sheet 200, and the waste discharge thimble 160 is prevented from interfering with the roller knife 121; the waste discharge thimble 160 can also extend out of the containing hole 122 when the roller knife 121 rotates to be separated from the limiting roller 130, and eject the waste in the crease hole 210, so as to prevent the waste from being clamped in the crease hole 210 and influencing the folding of the subsequent anode sheet 200. Specifically, the accommodating hole 122 is disposed in the middle of the roller knife 121, and the waste discharge thimble 160 can eject waste in the crease hole 210 from the middle of the roller knife 121, thereby improving waste discharge efficiency.
Referring to fig. 6, the waste spike 160 includes a spike body 161 and an elastic member 162. The elastic member 162 is disposed in the accommodating hole 122, one end of the elastic member 162 is connected to the roller blade 121, and the other end is connected to the thimble body 161, so that the elastic member 162 can extend or contract, and the thimble body 161 can extend or retract into the accommodating hole 122. Specifically, when the roller blade 121 rotates to abut against the limiting roller 130, the thimble body 161 retracts into the accommodating hole 122 under the abutting action of the limiting roller 130, at this time, the elastic member 162 is in a compressed state, and the roller blade 121 cuts the fold hole 210 on the anode sheet 200; when the roller knife 121 rotates to be separated from the limiting roller 130, the limiting roller 130 no longer generates a supporting action on the thimble body 161, and at this time, the elastic member 162 is ejected outwards under the action of its own elasticity, so as to drive the thimble body 161 to extend out of the accommodating hole 122 and eject the waste material in the crease hole 210.
In this embodiment, the elastic element 162 is a spring, the thimble body 161 includes an ejecting portion 163 and a limiting portion 164, the limiting portion 164 is fixedly connected to the ejecting portion 163, and a cross-sectional area of the limiting portion 164 is smaller than a cross-sectional area of the ejecting portion 163. The elastic member 162 is sleeved outside the limiting portion 164 and abuts against the ejecting portion 163, the elastic member 162 can push the ejecting portion 163 to extend out of the accommodating hole 122 and eject the waste material in the crease hole 210, and the limiting portion 164 can limit the extending direction of the elastic member 162 to prevent the elastic member 162 from deviating in the extending process. However, the present invention is not limited thereto, and in other embodiments, the elastic member 162 may be made of elastic rubber, which can also perform the function of ejecting the waste material in the crease hole 210, and the material of the elastic member 162 is not particularly limited.
Referring to fig. 7, the waste discharge mechanism 170 includes an air pump 171 and a waste discharge box 172. The air pump 171 is communicated with the waste discharge box 172, the waste discharge box 172 is provided with a suction port 173, the position of the suction port 173 corresponds to the position of the material passing cavity 190, and the air pump 171 is used for generating negative pressure so as to suck waste ejected by the waste discharge thimble 160 into the waste discharge box 172 to prevent the waste from splashing around and prevent the waste from being attached to the anode sheet 200 to influence the subsequent lamination operation.
It should be noted that during the pressing and cutting process of the pole piece pressing and cutting device 100, the anode piece 200 is first passed through the material passing cavity 190; and then, the first driving member 140 and the second driving member 150 are started to enable the press-cutting roller 120 to rotate towards the first direction, the limiting roller 130 rotates towards the second direction, so as to drive the anode sheet 200 to feed, in the process, when the roller knife 121 on the press-cutting roller 120 rotates to a position abutting against the limiting roller 130, the roller knife 121 cuts a crease hole 210 on the anode sheet 200, at the moment, the waste discharge thimble 160 retracts into the accommodating hole 122, when the roller knife 121 on the press-cutting roller 120 rotates to a position separated from the limiting roller 130, the waste discharge thimble 160 extends out of the accommodating hole 122 and ejects the waste in the crease hole 210, at the moment, the air pump 171 of the waste discharge mechanism 170 is started to suck and remove the waste, and the press-cutting operation is realized.
Further, when the pole piece pressing and cutting device 100 completes the pressing and cutting operation, the anode sheet 200 is provided with a plurality of sets of crease holes 210, the number of each set of crease holes 210 is five, that is, a plurality of crease lines are formed on the anode sheet 200, and the anode sheet 200 can be sequentially folded along the plurality of crease lines to realize the lamination operation. Therefore, lamination can be completed without cutting off the anode sheet 200, so that the risk of cell circuit break caused by acne piercing the diaphragm is avoided, and the energy density of the cell is greatly improved.
It should be noted that, in the lamination process of the battery cell, first, two layers of separators are respectively attached to two sides of the anode sheet 200 to form an anode separator layer; sequentially and alternately sticking a plurality of cathode sheets to two sides of the anode diaphragm layer, wherein each cathode sheet is arranged between two adjacent crease lines, and two adjacent cathode sheets are respectively stuck to two sides of the anode diaphragm layer; then, thermally compounding the anode diaphragm layer and the plurality of cathode sheets so that the anode sheet 200, the diaphragm and the cathode sheets are combined to form a composite pole piece; and finally, folding the composite pole piece, namely folding the anode diaphragm layer for multiple times along the crease line so as to wrap the plurality of cathode pieces in the anode diaphragm layer, wherein the projections of the plurality of cathode pieces are overlapped, so that lamination is completed, and the battery core is obtained. Therefore, the lamination precision is high, the requirement of high-speed lamination is met, and the anode sheet 200 is continuous, so that the situation of cell short circuit can be avoided, and the energy density of the cell is high.
In the pole piece pressing and cutting device 100 provided by the embodiment of the present invention, the pressing and cutting roller 120 and the limiting roller 130 are arranged in parallel at intervals and are both rotatably installed on the base 110, a material passing cavity 190 for a pole piece to pass through is formed between the pressing and cutting roller 120 and the limiting roller 130, the first driving member 140 is in transmission connection with the pressing and cutting roller 120, the roller knife 121 is arranged on the circumferential surface of the pressing and cutting roller 120, and the roller knife 121 is used for abutting against the limiting roller 130 when the first driving member 140 drives the pole piece to pass through the material passing cavity 190 through the pressing and cutting roller 120, so as to cut a crease hole 210 on the pole piece. Compared with the prior art, the pole piece pressing and cutting device 100 provided by the invention adopts the pressing and cutting roller 120 and the limiting roller 130 which are arranged in parallel at intervals and the roller cutter 121 arranged on the pressing and cutting roller 120, so that the crease hole 210 can be cut on the anode sheet 200, the anode sheet 200 can be laminated under the condition of continuous non-cutting, the short circuit of a battery cell caused by the piercing of a diaphragm is avoided, and the energy density of the battery cell is improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a pole piece crush-cutting device, its characterized in that includes base, crush-cutting roller, spacing roller and first driving piece, crush-cutting roller with spacing roller parallel interval sets up, and all rotationally install in on the base, crush-cutting roller with form the punishment in advance cavity that is used for supplying the pole piece to pass between the spacing roller, first driving piece with crush-cutting roller transmission is connected, be provided with the roller sword on crush-cutting roller's global, the roller sword is used for first driving piece pass through crush-cutting roller drive the pole piece pass in advance the cavity when with spacing roller supports, with cut out the crease hole on the pole piece.
2. The pole piece pressing and cutting device according to claim 1, wherein the number of the roller cutters is multiple, and the roller cutters are arranged in parallel at intervals along the axial direction of the pressing and cutting roller.
3. The pole piece press cutting device according to claim 1, wherein the number of the roller knives is plural, and the plural roller knives are arranged on the circumferential surface of the press cutting roller in an annular array.
4. The pole piece pinch-off device of claim 1, wherein the roller knife is elongated and has a length in the same axial direction as the pinch-off roller.
5. The pole piece press-cutting device according to claim 1, further comprising a waste discharge thimble, wherein a containing hole is formed in a free end of the roller cutter, the waste discharge thimble is installed in the containing hole, the waste discharge thimble can be retracted into the containing hole when the roller cutter rotates to abut against the limiting roller, and the waste discharge thimble can also be extended out of the containing hole when the roller cutter rotates to separate from the limiting roller and ejects waste materials in the crease hole.
6. The pole piece press-cutting device according to claim 5, wherein the waste ejector pin comprises an ejector pin body and an elastic piece, the elastic piece is arranged in the accommodating hole, one end of the elastic piece is connected with the roller knife, the other end of the elastic piece is connected with the ejector pin body, and the ejector pin body can extend out of or retract into the accommodating hole.
7. The pole piece crush-cutting device according to claim 1, further comprising a waste discharging mechanism, wherein the waste discharging mechanism is mounted on the base, and the waste discharging mechanism is used for sucking waste generated by cutting the crease hole.
8. The pole piece press-cutting device according to claim 7, wherein the waste discharging mechanism comprises an air pump and a waste discharging box, the air pump is communicated with the waste discharging box, the waste discharging box is provided with a suction inlet, and the position of the suction inlet corresponds to the position of the material passing cavity.
9. The pole piece crush-cutting device of claim 1, further comprising a pinch roller, wherein the pinch roller is rotatably mounted on the base and abuts against the crush-cutting roller, and the pinch roller is used for limiting the crush-cutting roller.
10. The pole piece crush-cutting device of claim 1, further comprising a second driving member, wherein the second driving member is in transmission connection with the limiting roller, and the rotation direction of the limiting roller is opposite to the rotation direction of the crush-cutting roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011288481.2A CN112355120A (en) | 2020-11-17 | 2020-11-17 | Pole piece pressing and cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011288481.2A CN112355120A (en) | 2020-11-17 | 2020-11-17 | Pole piece pressing and cutting device |
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| Publication Number | Publication Date |
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| CN112355120A true CN112355120A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011288481.2A Pending CN112355120A (en) | 2020-11-17 | 2020-11-17 | Pole piece pressing and cutting device |
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| CN (1) | CN112355120A (en) |
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