CN112873945A - Battery pole piece forming equipment and forming method - Google Patents
Battery pole piece forming equipment and forming method Download PDFInfo
- Publication number
- CN112873945A CN112873945A CN202110042255.4A CN202110042255A CN112873945A CN 112873945 A CN112873945 A CN 112873945A CN 202110042255 A CN202110042255 A CN 202110042255A CN 112873945 A CN112873945 A CN 112873945A
- Authority
- CN
- China
- Prior art keywords
- roller
- pressing roller
- pole piece
- battery pole
- mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 45
- 238000007906 compression Methods 0.000 claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 238000003825 pressing Methods 0.000 claims description 84
- 230000007246 mechanism Effects 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 10
- 239000011149 active material Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 3
- 239000013543 active substance Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 9
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000013618 particulate matter Substances 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000009702 powder compression Methods 0.000 description 1
- 238000009703 powder rolling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/28—Presses specially adapted for particular purposes for forming shaped articles
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0409—Methods of deposition of the material by a doctor blade method, slip-casting or roller coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a battery pole piece forming device and a forming method, which belong to the technical field of battery pole piece production equipment. Active particulate matter forms the diaphragm through first compression roller and the common roll-in of second compression roller, and second compression roller and third compression roller can roll in the diaphragm in the substrate, compare prior art, can make the thickness of roll-in fashioned diaphragm even to make the thickness of the battery pole piece of formation even, avoid appearing the powder when battery pole piece inflation and drop, guarantee lithium ion battery normal work.
Description
Technical Field
The invention relates to the technical field of battery pole piece production equipment, in particular to battery pole piece forming equipment and a battery pole piece forming method.
Background
Lithium ion batteries have been used in the fields of mobile phones, notebook computers, and the like because of their high energy density, but further improvements in performance such as reduction in resistance and increase in capacity have been demanded with the expansion and development of applications.
Lithium ion battery electrodes are available in the form of battery electrode sheets, and for example, in order to manufacture rolled sheets such as battery electrode sheets from powders containing electrode active materials, compression molding of powders using a powder rolling device has been performed. In the powder calendering device, obtain the battery pole piece with the roller with powder compression moulding on the substrate, make the thickness of the powder of different regions on the substrate different easily, this just makes in later stage working process, the expansion condition of battery pole piece different regions is different and makes the powder drop from the substrate easily, influences follow-up lithium ion battery's normal work.
Disclosure of Invention
The invention aims to provide battery pole piece forming equipment and a forming method, which aim to solve the problem that in the prior art, a roller is used for compressing and forming powder on a base material to obtain a battery pole piece, so that the thickness of the powder in different areas on the base material of the battery pole piece is easy to be different, and the normal work of a subsequent lithium ion battery is influenced.
As the conception, the technical scheme adopted by the invention is as follows:
the utility model provides a battery pole piece former, is including conveying mechanism, defeated material mechanism and the roll-in mechanism that is used for carrying the substrate, the roll-in mechanism is including first compression roller, second compression roller and the third compression roller that sets up side by side, the substrate is worn to locate along vertical direction the second compression roller with between the third compression roller, first compression roller with the second compression roller can roll-in by the active material granule that defeated material mechanism carried forms the diaphragm, second compression roller and third compression roller can with the diaphragm roll-in the substrate.
Further, the temperature of the first press roll is higher than that of the second press roll, and the temperature of the third press roll is the same as that of the second press roll.
Further, the battery pole piece forming equipment further comprises a first driving mechanism and a first mounting assembly, the first pressing roller and the second pressing roller are mounted on the first mounting assembly, and the first driving mechanism can drive the first pressing roller and/or the second pressing roller so that the first pressing roller and the second pressing roller are close to or far away from each other.
Further, the first mounting assembly comprises two oppositely arranged first mounting structures and two oppositely arranged second mounting structures, the first press roller is mounted between the two first mounting structures, and the second press roller is mounted between the two second mounting structures; the first driving mechanism comprises two first driving structures, and the two first driving structures can respectively drive the two first mounting structures to move towards the direction close to or away from the second press roller.
Further, the battery pole piece forming equipment further comprises a second driving mechanism and a second mounting assembly, the third press roller is mounted on the second mounting assembly, and the second driving mechanism can drive the second mounting assembly to move towards the direction close to or away from the second press roller.
Further, the second mounting assembly comprises two third mounting structures which are arranged oppositely, and the third press roller is mounted between the two third mounting structures; the second driving mechanism comprises two second driving structures, and the two second driving structures can respectively drive the two third mounting structures to move towards the direction close to or away from the second press roller.
Furthermore, each second mounting structure is provided with two first cantilevers which are arranged up and down towards one side of the corresponding first mounting structure, and the first mounting structures are arranged between the two corresponding first cantilevers in a sliding manner;
each second mounting structure is provided with two second cantilevers which are arranged up and down towards one side of the corresponding third mounting structure, and the third mounting structure is arranged between the corresponding two second cantilevers in a sliding mode.
Further, conveying mechanism includes first support piece and second support piece, first support piece can support the substrate coiled material, be provided with the winding roller on the second support piece, the winding roller can drive the substrate by the second compression roller with vertically pass between the third compression roller.
Further, conveying mechanism is still including being located respectively the first backing roll and the second backing roll of both sides about the second compression roller, first backing roll is adjustable in position on the range direction of three compression roller, the position of second backing roll in vertical direction is adjustable, the substrate passes through successively the second backing roll with first backing roll, and be located first backing roll with part substrate between the second backing roll is vertical to be located the second compression roller with between the third compression roller.
In order to achieve the above object, the present invention further provides a battery pole piece forming method, which is suitable for the battery pole piece forming device in any of the above schemes, and the battery pole piece forming method comprises the following steps:
s1, rolling the active substance particles to form a membrane;
s2, rolling the film sheet on the substrate
The invention has the beneficial effects that:
according to the battery pole piece forming equipment and the forming method, the first pressing roller, the second pressing roller and the third pressing roller are arranged, the first pressing roller and the second pressing roller roll the active particle substances together to form the membrane, and the second pressing roller and the third pressing roller can roll the membrane on the base material.
Drawings
FIG. 1 is a schematic structural diagram of a pole piece forming apparatus provided by the present invention;
FIG. 2 is a schematic cross-sectional view of a pole piece forming apparatus provided by the present invention;
FIG. 3 is a schematic view of a partial structure of a pole piece forming apparatus provided by the present invention.
In the figure:
1. a conveying mechanism; 11. a first support member; 12. a second support member; 13. a first support roller; 14. a second support roller; 15. a third support roller; 16. a fourth support roller;
2. a material conveying mechanism;
3. a rolling mechanism; 31. a first press roll; 32. a second press roll; 33. a third press roll; 34. a first gear; 35. a second gear; 36. a third gear;
4. a first mounting assembly; 41. a first mounting structure; 42. a second mounting structure; 421. a first cantilever; 422. a second cantilever; 43. a first fixing member;
5. a second mounting assembly; 51. a third mounting structure; 52. a second fixing member;
6. a first drive structure; 61. a first runner; 62. a first connecting rod;
7. a second drive structure; 71. a second runner; 72. a second connecting rod;
8. a support frame; 81. a horizontal support plate; 811. an extension plate; 8111. a second slide hole; 82. a vertical support plate; 821. a first slide hole;
10. a substrate.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, 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" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1 to fig. 3, the present embodiment provides a battery pole piece forming apparatus, which includes a conveying mechanism 1 for conveying a substrate 10, a material conveying mechanism 2, and a rolling mechanism 3. The rolling mechanism 3 comprises a first pressing roller 31, a second pressing roller 32 and a third pressing roller 33 which are arranged side by side, the substrate 10 penetrates through the second pressing roller 32 and the third pressing roller 33 along the vertical direction, the first pressing roller 31 and the second pressing roller 32 can roll the active particle substances conveyed by the conveying mechanism 2 to form a membrane, and the second pressing roller 32 and the third pressing roller 33 can roll the membrane on the substrate 10.
Above-mentioned first compression roller 31 is the same with the rotation direction of third compression roller 33, the rotation opposite direction of first compression roller 31 and second compression roller 32, the diaphragm that first compression roller 31 and second compression roller 32 roll-in formed attaches on second compression roller 32, and roll-in the diaphragm on substrate 10 through second compression roller 32, so set up, can combine separately the roll-in shaping of diaphragm and the roll-in of diaphragm and pole piece, guarantee the thickness of roll-in fashioned diaphragm even, thereby make the thickness of the battery pole piece of formation even, avoid appearing the powder when the battery pole piece inflation and drop, guarantee that lithium ion battery normally works.
Further, in order to enable the film sheet to be attached to the second pressing roller 32, the temperature of the first pressing roller 31 is higher than that of the second pressing roller 32, and specifically, in the present embodiment, the temperature of the first pressing roller 31 is 40 ℃ to 300 ℃, and the temperature of the second pressing roller 32 is room temperature. Further, in the present embodiment, the temperature of the third press roller 33 is the same as that of the second press roller 32, specifically, the temperature of the third press roller 33 is room temperature.
As shown in fig. 1, the feeding mechanism 2 includes a feeding hopper, a feeding port of the feeding hopper is located above a gap between the first pressing roller 31 and the second pressing roller 32, and active material particles in the feeding hopper enter between the first pressing roller 31 and the second pressing roller 32 through the feeding port, and are pressed by the first pressing roller 31 and the second pressing roller 32 to form a film. In this embodiment, the hopper is mounted on the rolling mechanism 3.
As shown in fig. 2, the conveying mechanism 1 includes a first support 11 and a second support 12, the first support 11 can support the substrate web, and the second support 12 is provided with a winding roller, and the winding roller can drive the substrate 10 to vertically pass through between a second pressing roller 32 and a third pressing roller 33. Further, the conveying mechanism 1 further comprises a first supporting roller 13 and a second supporting roller 14 which are respectively located at the upper side and the lower side between the second pressing roller 32 and the third pressing roller 33, the base material 10 sequentially passes through the second supporting roller 14 and the first supporting roller 13, and part of the base material 10 located between the first supporting roller 13 and the second supporting roller 14 is vertically located between the second pressing roller 32 and the third pressing roller 33, so that the second pressing roller 32 can press the film sheet on the base material 10 in a rolling manner.
Further, the conveying mechanism 1 further comprises a third supporting roller 15 and a fourth supporting roller 16, at least one third supporting roller 15 and at least one fourth supporting roller 16 are arranged between the first supporting member 11 and the rolling mechanism 3, and at least one third supporting roller 15 and at least one fourth supporting roller 16 are arranged between the second supporting member 12 and the rolling mechanism 3. The substrate 10 can be supported and tensioned by the third support roller 15 and the fourth support roller 16. Specifically, in the present embodiment, one third support roller 15 and two fourth support rollers 16 are disposed between the first support 11 and the rolling mechanism 3, and the third support roller 15 is located between the two fourth support rollers 16 and below the two fourth support rollers 16 in the vertical direction. A third supporting roller 15 and two fourth supporting rollers 16 are arranged between the second supporting member 12 and the rolling mechanism 3, and the third supporting roller 15 is located between the two fourth supporting rollers 16 and is located below the two fourth supporting rollers 16 in the vertical direction. It is understood that in this embodiment, the substrate 10 is wound under the two third supporting rollers 15.
In order to enable flexible tensioning of the substrate 10, the third support roller 15 is adjustable in position in the vertical direction in the present embodiment. The base material 10 is tensioned more flexibly by adjusting the position of the third supporting roller 15 in the vertical direction. Of course, in other embodiments, the fourth support roller 16 may be arranged to be adjustable in position in the vertical direction, and the substrate 10 may be tensioned by adjusting the position of the fourth support roller 16.
Referring to fig. 1 and 2 again, the pole piece forming equipment further includes a support frame 8, and the conveying mechanism 1 and the rolling mechanism 3 are both disposed on the support frame 8. Specifically, the support frame 8 includes a horizontal support plate 81 and a vertical support plate 82 connected to each other, and the first support 11, the second support 12, the first support roller 13, the third support roller 15, and the fourth support roller 16 are disposed on the vertical support plate 82. The second support roller 14 and the rolling mechanism 3 are located on the horizontal support plate 81.
Further, in the present embodiment, a linear guide (not shown in the drawings) extending in the vertical direction is provided on the vertical support plate 82 corresponding to each third support roller 15, and the third support roller 15 is slidably provided on the linear guide so as to be movable in the vertical direction.
Further, the position of the first support roller 13 in the horizontal direction is adjustable, and the position of the second support roller 14 in the vertical direction is adjustable. Interference of the base material 10 with the first press roller 31 is avoided by adjusting the position of the second support roller 14 in the vertical direction, and the perpendicularity of the portion of the base material 10 located between the first support roller 13 and the second support roller 14 can be adjusted by adjusting the position of the first support roller 13 in the horizontal direction. And adjusting the positions of the first and second support rollers 13 and 14 also enables adjustment of the tightness of the substrate 10. Specifically, a first sliding hole 821 is opened on the vertical support plate 82 along the horizontal direction, and the first support roller 13 is slidably disposed in the first sliding hole 821. The horizontal support plate 81 is provided with an extension plate 811 extending along the vertical direction, the extension plate 811 is provided with a second slide hole 8111 extending along the vertical direction, and the second support roller 14 is slidably disposed in the second slide hole 8111.
As shown in fig. 1 and 3, the battery pole piece forming apparatus further includes a first driving mechanism and a first mounting assembly 4, wherein the first pressing roller 31 and the second pressing roller 32 are both mounted on the first mounting assembly 4, and the first driving mechanism can drive the first pressing roller 31 and/or the second pressing roller 32 to make the first pressing roller 31 and the second pressing roller 32 approach or move away.
Specifically, in the present embodiment, the first mounting assembly 4 includes two oppositely disposed first mounting structures 41 and two oppositely disposed second mounting structures 42, the first pressing roller 31 is rotatably mounted between the two first mounting structures 41, and the second pressing roller 32 is rotatably mounted between the two second mounting structures 42. The first driving mechanism comprises two first driving structures 6, and the two first driving structures 6 can respectively drive the two first mounting structures 41 to move towards or away from the second pressing roller 32. The hopper is mounted to two second mounting structures 42.
Further, in the present embodiment, each second mounting structure 42 has two first suspension arms 421 disposed up and down on a side facing the corresponding first mounting structure 41, and each first mounting structure 41 is slidably disposed between the corresponding two first suspension arms 421. The first mounting assembly 4 further includes two first fixing members 43, and the two first fixing members 43 are respectively connected to the first suspension arms 421 of the two second mounting structures 42. The first driving structure 6 includes a first wheel 61 and a first connecting rod 62 connected to each other, the first connecting rod 62 is connected to the first mounting structure 41 through a corresponding first fixing member 43, and the first connecting rod 62 is threadedly connected to the first fixing member 43. The adjustment of the distance between the first pressing roller 31 and the second pressing roller 32 can be realized by rotating the first rotating wheel 61 to drive the corresponding first mounting structure 41 to slide relative to the second mounting structure 42. In the present embodiment, the second mounting structure 42 is mounted to the horizontal support plate 81.
Specifically, in the present embodiment, the first mounting structure 41 includes a first mounting block, and it is further preferable that the first mounting structure 41 includes one first mounting block, and the first pressing roller 31 is mounted between the two first mounting blocks. Of course, in other embodiments, the first mounting structure 41 may also include a plurality of first mounting blocks. Further, in the present embodiment, the second mounting structure 42 includes a second mounting block, and it is further preferable that the second mounting structure 42 includes one second mounting block, and the second platen 32 is mounted between the two second mounting blocks. Of course, in other embodiments, the second mounting structure 42 may also include a plurality of second mounting blocks.
Of course, in other embodiments, the first driving mechanism may drive the second pressing roller 32 to move closer to or away from the first pressing roller 31. Specifically, the first mounting assembly 4 includes two oppositely disposed fourth mounting structures and two oppositely disposed fifth mounting structures, wherein the first pressing roller 31 is mounted between the two fourth mounting structures, and the second pressing roller 32 is mounted between the two fifth mounting structures. The first driving mechanism comprises two third driving structures, and the two third driving structures can respectively drive the two fifth mounting structures to move towards or away from the corresponding fourth mounting structures. The third driving structure can be a cylinder, a motor screw and the like, and the fifth mounting structure can be driven.
As shown in fig. 1 and 3, the battery pole piece forming apparatus further includes a second driving mechanism and a second mounting assembly 5, wherein the third pressing roller 33 is mounted on the second mounting assembly 5, and the second driving mechanism can drive the second mounting assembly 5 to move towards or away from the second pressing roller 32. Specifically, the second mounting assembly 5 includes two opposite third mounting structures 51, the third pressing roller 33 is mounted between the two third mounting structures 51, the second driving mechanism includes two second driving structures 7, and the two second driving structures 7 can respectively drive the two third mounting structures 51 to move towards or away from the second pressing roller 32.
Further, in the present embodiment, each second mounting structure 42 has two second suspension arms 422 disposed up and down on a side facing the corresponding third mounting structure 51, and the third mounting structure 51 is slidably disposed between the corresponding two second suspension arms 422. The second mounting assembly 5 further includes two second fixing members 52, and the two second fixing members 52 are respectively connected to the second suspension arms 422 of the two second mounting structures 42. The second driving structure 7 comprises a second rotating wheel 71 and a second connecting rod 72 which are connected, the second connecting rod 72 is connected to the third mounting structure 51 through the corresponding second fixing member 52, and the second connecting rod 72 is screwed to the second fixing member 52. By rotating the second wheel 71, the corresponding third mounting structure 51 can be driven to slide relative to the second mounting structure 42, so that the distance between the second pressing roller 32 and the third pressing roller 33 can be adjusted.
Specifically, in the present embodiment, the third mounting structure 51 includes a third mounting block, and it is further preferable that the third mounting structure 51 includes one third mounting block, and the third pressing roller 33 is mounted between two third mounting blocks. Of course, in other embodiments, the third mounting structure 51 may also include a plurality of third mounting blocks.
Referring again to fig. 1, in order to improve the consistency of the rotation of the first pressure roller 31, the second pressure roller 32 and the third pressure roller 33, a first gear 34 is connected to one end of the first pressure roller 31, a second gear 35 is connected to one end of the second pressure roller 32, and a third gear 36 is connected to one end of the third pressure roller 33. The first gear 34 meshes with the second gear 35, and the second gear 35 meshes with the third gear 36.
To sum up, the battery sheet former that this embodiment provided, through setting up first compression roller 31, second compression roller 32 and third compression roller 33, active particulate matter forms the diaphragm is rolled in jointly to first compression roller 31 and second compression roller 32, and second compression roller 32 can roll in substrate 10 with the diaphragm, compare prior art, can make the thickness of roll-in fashioned diaphragm even, thereby make the thickness of the battery sheet of formation even, avoid appearing the powder when the battery sheet inflation and drop, guarantee lithium ion battery normal work.
The embodiment also provides a battery pole piece forming method, which comprises the following steps:
s1: rolling the active material particles to form a film;
s2: the film is rolled onto the substrate.
It can be understood that, in this embodiment, go on active material's roll-in and battery sheet's shaping substep, at first form the diaphragm through first compression roller 31 and second compression roller 32 roll-in with active material granule, rethread second compression roller 32 rolls in substrate 10 with the diaphragm, can improve the uniformity of the thickness of diaphragm, thereby guarantee that the battery sheet thickness that forms is even, avoid follow-up active material to appear in lithium ion battery working process and drop and lead to the condition of short circuit, improve lithium ion battery's security performance.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a battery pole piece former, its characterized in that, is including conveying mechanism (1), defeated material mechanism (2) and the roller press mechanism (3) that are used for carrying substrate (10), roller press mechanism (3) are including first compression roller (31), second compression roller (32) and third compression roller (33) that set up side by side, substrate (10) are worn to locate along vertical direction second compression roller (32) with between third compression roller (33), first compression roller (31) with second compression roller (32) can the roll by the active material granule that defeated material mechanism (2) carried forms the diaphragm, second compression roller (32) with third compression roller (33) can with the diaphragm roll in substrate (10).
2. The battery pole piece molding apparatus according to claim 1, wherein the temperature of the first pressing roller (31) is higher than the temperature of the second pressing roller (32), and the temperature of the third pressing roller (33) is the same as the temperature of the second pressing roller (32).
3. The battery pole piece forming device according to claim 1, further comprising a first driving mechanism and a first mounting assembly (4), wherein the first pressing roller (31) and the second pressing roller (32) are both mounted on the first mounting assembly (4), and the first driving mechanism can drive the first pressing roller (31) and/or the second pressing roller (32) to enable the first pressing roller (31) and the second pressing roller (32) to approach or separate from each other.
4. The battery pole piece molding apparatus of claim 3, wherein the first mounting assembly (4) comprises two oppositely disposed first mounting structures (41) and two oppositely disposed second mounting structures (42), the first pressure roller (31) is mounted between the two first mounting structures (41), and the second pressure roller (32) is mounted between the two second mounting structures (42); the first driving mechanism comprises two first driving structures (6), and the two first driving structures (6) can respectively drive the two first mounting structures (41) to move towards or away from the second pressing roller (32).
5. The battery pole piece forming device according to claim 4, further comprising a second driving mechanism and a second mounting assembly (5), wherein the third pressing roller (33) is mounted on the second mounting assembly (5), and the second driving mechanism can drive the second mounting assembly (5) to move towards or away from the second pressing roller (32).
6. The battery pole piece molding apparatus of claim 5, wherein the second mounting assembly (5) comprises two oppositely disposed third mounting structures (51), and the third pressing roller (33) is mounted between the two third mounting structures (51); the second driving mechanism comprises two second driving structures (7), and the two second driving structures (7) can respectively drive the two third mounting structures (51) to move towards or away from the second pressing roller (32).
7. The battery pole piece molding device according to claim 6, wherein each second mounting structure (42) has two first suspension arms (421) arranged up and down on one side facing the corresponding first mounting structure (41), and the first mounting structure (41) is slidably arranged between the corresponding two first suspension arms (421);
each second mounting structure (42) is provided with two second suspension arms (422) which are arranged up and down on one side facing the corresponding third mounting structure (51), and the third mounting structure (51) is arranged between the corresponding two second suspension arms (422) in a sliding manner.
8. The battery pole piece forming device according to claim 1, wherein the conveying mechanism (1) comprises a first support member (11) and a second support member (12), the first support member (11) can support a substrate web, a winding roller is arranged on the second support member (12), and the winding roller can drive the substrate (10) to vertically pass through between the second pressing roller (32) and the third pressing roller (33).
9. The battery pole piece forming device according to claim 8, wherein the conveying mechanism (1) further comprises a first supporting roller (13) and a second supporting roller (14) which are respectively positioned at the upper side and the lower side of the second pressing roller (32), the position of the first supporting roller (13) is adjustable in the arrangement direction of the three pressing rollers, the position of the second supporting roller (14) is adjustable in the vertical direction, the substrate (10) successively passes through the second supporting roller (14) and the first supporting roller (13), and part of the substrate (10) between the first supporting roller (13) and the second supporting roller (14) is vertically positioned between the second pressing roller (32) and the third pressing roller (33).
10. A battery pole piece forming method, which is suitable for the battery pole piece forming equipment of any one of claims 1 to 9, and comprises the following steps:
s1, rolling the active substance particles to form a membrane;
and S2, rolling the film sheet on the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110042255.4A CN112873945A (en) | 2021-01-13 | 2021-01-13 | Battery pole piece forming equipment and forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110042255.4A CN112873945A (en) | 2021-01-13 | 2021-01-13 | Battery pole piece forming equipment and forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112873945A true CN112873945A (en) | 2021-06-01 |
Family
ID=76045329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110042255.4A Pending CN112873945A (en) | 2021-01-13 | 2021-01-13 | Battery pole piece forming equipment and forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112873945A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824173A (en) * | 2022-06-10 | 2022-07-29 | 蜂巢能源科技(无锡)有限公司 | Dry electrode pole piece, preparation method thereof and application of dry electrode pole piece in energy storage battery |
| WO2024016207A1 (en) * | 2022-07-20 | 2024-01-25 | 宁德时代新能源科技股份有限公司 | Electrode sheet manufacturing apparatus and electrode sheet manufacturing method |
| WO2024016211A1 (en) * | 2022-07-20 | 2024-01-25 | 宁德时代新能源科技股份有限公司 | Electrode sheet manufacturing device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002212608A (en) * | 2000-11-10 | 2002-07-31 | Ishikawajima Harima Heavy Ind Co Ltd | Powder rolling apparatus and powder rolling method |
| CN103357557A (en) * | 2013-06-25 | 2013-10-23 | 中国兵器工业第二一三研究所 | Method for continuously coating high-viscosity sizing agent used for preparing positive pole piece of lithium-manganese primary cell |
| CN104868092A (en) * | 2014-02-25 | 2015-08-26 | 松下知识产权经营株式会社 | Manufacturing apparatus of coating film product |
| CN105050729A (en) * | 2013-03-29 | 2015-11-11 | 丰田自动车株式会社 | Powder coating device and method for manufacturing electrode for lithium ion battery using same |
| JP2016025060A (en) * | 2014-07-24 | 2016-02-08 | トヨタ自動車株式会社 | Method for manufacturing electrode sheet for lithium ion secondary battery |
| JP2018125201A (en) * | 2017-02-02 | 2018-08-09 | トヨタ自動車株式会社 | Method for manufacturing electrode |
| CN108899468A (en) * | 2018-06-27 | 2018-11-27 | 合肥国轩高科动力能源有限公司 | A kind of method that cathode pole piece mends lithium |
| CN109390562A (en) * | 2018-09-28 | 2019-02-26 | 超威电源有限公司 | A kind of two sides apply the battery terminal manufacturing method of cream |
| CN112864346A (en) * | 2021-01-12 | 2021-05-28 | 惠州亿纬锂能股份有限公司 | Pole piece, preparation method thereof and battery |
| CN215704312U (en) * | 2021-01-13 | 2022-02-01 | 惠州亿纬锂能股份有限公司 | Battery pole piece forming equipment |
-
2021
- 2021-01-13 CN CN202110042255.4A patent/CN112873945A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002212608A (en) * | 2000-11-10 | 2002-07-31 | Ishikawajima Harima Heavy Ind Co Ltd | Powder rolling apparatus and powder rolling method |
| CN105050729A (en) * | 2013-03-29 | 2015-11-11 | 丰田自动车株式会社 | Powder coating device and method for manufacturing electrode for lithium ion battery using same |
| CN103357557A (en) * | 2013-06-25 | 2013-10-23 | 中国兵器工业第二一三研究所 | Method for continuously coating high-viscosity sizing agent used for preparing positive pole piece of lithium-manganese primary cell |
| CN104868092A (en) * | 2014-02-25 | 2015-08-26 | 松下知识产权经营株式会社 | Manufacturing apparatus of coating film product |
| JP2016025060A (en) * | 2014-07-24 | 2016-02-08 | トヨタ自動車株式会社 | Method for manufacturing electrode sheet for lithium ion secondary battery |
| JP2018125201A (en) * | 2017-02-02 | 2018-08-09 | トヨタ自動車株式会社 | Method for manufacturing electrode |
| CN108899468A (en) * | 2018-06-27 | 2018-11-27 | 合肥国轩高科动力能源有限公司 | A kind of method that cathode pole piece mends lithium |
| CN109390562A (en) * | 2018-09-28 | 2019-02-26 | 超威电源有限公司 | A kind of two sides apply the battery terminal manufacturing method of cream |
| CN112864346A (en) * | 2021-01-12 | 2021-05-28 | 惠州亿纬锂能股份有限公司 | Pole piece, preparation method thereof and battery |
| CN215704312U (en) * | 2021-01-13 | 2022-02-01 | 惠州亿纬锂能股份有限公司 | Battery pole piece forming equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824173A (en) * | 2022-06-10 | 2022-07-29 | 蜂巢能源科技(无锡)有限公司 | Dry electrode pole piece, preparation method thereof and application of dry electrode pole piece in energy storage battery |
| CN114824173B (en) * | 2022-06-10 | 2024-02-09 | 蜂巢能源科技(无锡)有限公司 | Dry electrode plate, preparation method thereof and application thereof in energy storage battery |
| WO2024016207A1 (en) * | 2022-07-20 | 2024-01-25 | 宁德时代新能源科技股份有限公司 | Electrode sheet manufacturing apparatus and electrode sheet manufacturing method |
| WO2024016211A1 (en) * | 2022-07-20 | 2024-01-25 | 宁德时代新能源科技股份有限公司 | Electrode sheet manufacturing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112873945A (en) | Battery pole piece forming equipment and forming method | |
| CN112873944A (en) | Battery pole piece forming equipment and forming method | |
| CN215704312U (en) | Battery pole piece forming equipment | |
| CN103934285B (en) | Battery pole piece pressure rolling method and multistage roller mill thereof | |
| JPS62278754A (en) | Method and apparatus for manufacturing electrode material from high hardness active material | |
| CN208127310U (en) | Pole piece mends lithium device | |
| CN104009201A (en) | Rolling device and thickness measuring system | |
| CN107359307B (en) | Lithium ion battery pole piece lithium supplementing device | |
| CN212384282U (en) | Ultra-wide ultra-thin metal lithium strip production device | |
| CN203862696U (en) | Battery pole piece multistage rolling machine | |
| CN115207267A (en) | Dry powder lithium battery pole piece forming method and pole piece forming equipment | |
| CN215745519U (en) | Pole piece rolling device for lithium battery production | |
| CN215152086U (en) | Battery pole piece forming equipment | |
| CN108777325B (en) | Full-automatic battery winding deviation rectifying equipment | |
| CN210366266U (en) | Equipment is tailor with flattening to lithium battery diaphragm processing | |
| CN217903354U (en) | Compression roller device is cut to lithium cell diaphragm | |
| CN216297508U (en) | Ultra-thin lithium area apparatus for producing of four roller calendering | |
| CN211926814U (en) | Tectorial membrane width detection device of promotion battery energy density | |
| CN214378529U (en) | Winding device for lithium battery processing | |
| CN113843289A (en) | Powder forming and compacting integrated machine | |
| CN220627850U (en) | Pole piece film preparation equipment | |
| CN220496803U (en) | Adjustable coating mechanism and slit extrusion coating assembly | |
| CN201994378U (en) | Battery cell winding device | |
| CN110854447A (en) | Square battery cell winding method and device | |
| CN217748835U (en) | Positive pole blank pressing module of power battery tab |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |