CN111048824B - Battery cell end face shaping device - Google Patents
Battery cell end face shaping device Download PDFInfo
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- CN111048824B CN111048824B CN202010190154.7A CN202010190154A CN111048824B CN 111048824 B CN111048824 B CN 111048824B CN 202010190154 A CN202010190154 A CN 202010190154A CN 111048824 B CN111048824 B CN 111048824B
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a cell end face shaping device, which comprises: the kneading and flattening component is used for kneading and flattening the end surface of the battery cell; and the transmission shaft is connected with the kneading component and used for driving the kneading component to rotate, the transmission shaft is provided with a first end face and a second end face which are oppositely arranged along the axial direction of the transmission shaft and an air exhaust channel which runs through the first end face and the second end face, the air exhaust channel is provided with an air inlet and an air outlet, the air inlet and the kneading component are both arranged on the first end face, and the air outlet is arranged on the second end face. The cell end face shaping device can realize synchronous operation of the flattening process and the dust removal process, and can timely and efficiently extract metal scraps generated on the end face of the cell while the end face of the flattened cell is kneaded, so that the cleanliness of a flattening station is ensured, and the possibility that the metal scraps are scattered freely or enter the cell is reduced.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a cell end face shaping device.
Background
With the development of science and technology and the transformation of world energy structures, sustainable energy is gradually replacing traditional fossil fuels to become mainstream energy. For example, electric vehicles are gradually replacing conventional fuel-fired vehicles. One of the core components in an electric vehicle is a battery. The battery is used for providing electric energy for the electric automobile. The existing cylindrical batteries are also more and more widely applied. After the positive plate, the negative plate and the diaphragm are wound to form the battery core, the area of the positive plate, which is not coated with the active material, forms the pole lug position end face of the positive electrode, and the area of the negative plate, which is not coated with the active material, forms the pole lug position end face of the negative electrode. And the pole ear position end face of the positive pole and the pole ear position end face of the negative pole are arranged oppositely along the axial direction of the battery core. The tab position end face needs to be welded with the current collecting plate so that the current of the battery can be output from the current collecting plate. Because the pole lug position end face is soft and easy to deform, when the collector plate is welded, the whole pole lug position end face is bent or deformed by applying pressure, so that the diameter of the pole lug position end face is enlarged or protruded outwards, and a battery cell cannot be installed in a battery shell or is communicated with the battery shell to cause short circuit. And before the collector plate is welded, kneading and flattening the end face of the tab position of the battery cell. However, metal chips are generated on the end surfaces of the extreme ears during the flattening process. Untimely processing of metal debris can lead to the increase of electric core physics self discharge, even get into electric core inside and cause positive plate and negative pole piece short circuit, or scatter inside the equipment, lead to cross contamination.
Disclosure of Invention
The invention provides a cell end face shaping device which can realize synchronous implementation of a flattening process and a dust removal process, and can timely and efficiently extract metal scraps generated on the end face of a cell while the end face of the flattening cell is kneaded, so that the cleanliness of a flattening station is ensured, and the possibility that the metal scraps are scattered freely or enter the interior of the cell is reduced.
On one hand, the invention provides a cell end face shaping device, which comprises:
the kneading and flattening component is used for kneading and flattening the end surface of the battery cell; and the number of the first and second groups,
the transmission shaft is connected with the kneading component and is used for driving the kneading component to rotate, the transmission shaft is provided with a first end face and a second end face which are oppositely arranged along the axial direction of the transmission shaft and an air exhaust channel which runs through the first end face and the second end face, the air exhaust channel is provided with an air inlet and an air outlet, the air inlet and the kneading component are both arranged on the first end face, and the air outlet is arranged on the second end face.
According to one aspect of the present invention, a transmission shaft includes a main shaft body and a flange connected to one end of the main shaft body in an axial direction of the transmission shaft, the flange having a first end surface, and the main shaft body having a second end surface.
According to one aspect of the present invention, the air-extracting passage includes a main hole provided in the main shaft body and two or more branch holes provided in the flange, and the main hole is communicated with each of the branch holes.
According to one aspect of the invention, the cell end face shaping device further comprises a vent pipe body, and the vent pipe body is convexly arranged on the first end face and is communicated with the air inlet.
According to one aspect of the invention, the vent pipe body and the kneading and flattening component are arranged in a staggered manner along the axial direction of the transmission shaft; or a gap is formed between the vent pipe body and the kneading and flattening part along the axial direction of the transmission shaft.
According to one aspect of the invention, the cell end face shaping device further comprises an air extraction assembly, the air extraction assembly is connected to the end part of the transmission shaft far away from the kneading and flattening part, and the air extraction assembly comprises an air extraction pipeline communicated with the air outlet.
According to one aspect of the invention, the cell end face shaping device further comprises a rotary joint, and the rotary joint is connected with the transmission shaft and the air exhaust assembly.
According to one aspect of the invention, the rotary joint includes a sleeve and a bearing through which the drive shaft is connected to one end of the sleeve and the suction assembly is connected to the other end of the sleeve.
According to one aspect of the invention, the rotary joint further comprises a seal body disposed between the drive shaft and the sleeve.
According to one aspect of the invention, the orthographic projection of at least part of the flattening member is located inside the orthographic projection of the air inlet in the axial direction of the drive shaft.
The cell end face shaping device comprises a flattening component which can synchronously rotate along with a transmission shaft. And kneading the end surface of the battery cell into a flat shape through the kneading component. Since the drive shaft itself has an air suction channel and air can be sucked from the area of the space near the flattening member through the air suction channel, a negative pressure is generated near the flattening member. Like this, electric core terminal surface shaping device is rubbing when leveling the shape action at the execution, simultaneously can be in time through the epaxial air exhaust passage of transmission, fast and effectively take out the metal piece from rubbing the flat station and leave to this reduces the possibility that the metal piece freely scatters, guarantees to rub the cleanliness factor of leveling the shape station, thereby reduce because of the metal piece handles untimely lead to electric core physics from discharging the increase often, get into inside positive plate and the negative pole piece short circuit that arouses of electric core even, perhaps scatter inside the equipment, lead to cross contamination's possibility. The cell end face shaping device provided by the embodiment of the invention can realize synchronous operation of the kneading and flattening process and the dust removal process.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below by referring to the accompanying drawings.
Fig. 1 is a schematic diagram of a cell structure disclosed in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cell end surface shaping device according to an embodiment of the present invention;
fig. 3 is a schematic partial sectional structural view of a cell end surface shaping device according to an embodiment of the present invention;
fig. 4 is a schematic front view of the cell end surface shaping device in the embodiment shown in fig. 2;
fig. 5 is a schematic structural diagram of a cell end surface shaping device according to another embodiment of the present invention;
fig. 6 is a schematic front view of the cell end surface shaping device in the embodiment shown in fig. 5;
fig. 7 is a schematic partial sectional structural view of a cell end surface shaping device according to another embodiment of the present invention;
fig. 8 is a schematic partial cross-sectional structural view of a cell end surface shaping device according to yet another embodiment of the present invention;
fig. 9 is a schematic partial sectional view of a cell end surface shaping device according to still another embodiment of the present invention.
In the drawings, the drawings are not necessarily drawn to scale.
Description of the labeling:
1. a cell end face shaping device;
10. a base; 11. a horizontal support; 12. a vertical support;
20. a shaping component;
21. a drive shaft; 21a, a main shaft body; 21b, a flange plate; 211. a first end face; 212. a second end face; 213. an air extraction channel; 213a, an air inlet; 213b, an air outlet; 2131. a main duct; 2132. a branched duct;
22. kneading the flat part; 221. kneading the flat roller body; 221a, kneading a flat surface; 222. a connecting shaft;
23. a vent tube body;
24. a mounting seat;
30. a drive assembly; 31. a driven wheel; 32. a driving wheel; 33. a drive motor;
40. an air extraction assembly; 41. an air extraction pipeline; 42. an air extractor;
50. a rotary joint; 51. a sleeve; 52. a bearing; 53. a seal body;
100. an electric core; 101. an end face;
x, axial direction; y, circumferential direction.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the described embodiments.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated for convenience in describing the invention and to simplify description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The following description is given with reference to the orientation words as shown in the drawings, and is not intended to limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
For a better understanding of the present invention, embodiments of the present invention are described below with reference to fig. 1 to 9.
Referring to fig. 1, a cylindrical battery cell 100 has two end faces 101 axially opposite to each other. The battery cell 100 may be a cylindrical battery cell. Referring to fig. 2 and fig. 3, an embodiment of the present invention provides a cell end surface shaping device 1, which is used for kneading an end surface 101 of a flat cell 100. With the cell end surface shaping device 1 of the present embodiment, the end surface 101 of the cell 100 may be kneaded to be flat in advance. The end surface 101 of the battery cell 100 becomes flat and regular after being kneaded and flattened. And then, the end face 101 of the battery core 100 is welded and connected with the current collecting plate, so that the smooth installation of the battery core into a battery shell is favorably ensured, and meanwhile, the large welding area of the end face 101 of the battery core 100 and the current collecting plate is favorably ensured, the welding strength is improved, and the resistance of the battery core is reduced.
Referring to fig. 2 and fig. 3, a cell end face reshaping device 1 according to an embodiment of the present invention includes a base 10 and a reshaping component 20. Base 10 provides a mounting support platform for orthopedic assembly 20. The fairing assembly 20 includes a drive shaft 21 and a flattening member 22. The transmission shaft 21 is rotatably connected to the base 10, that is, the transmission shaft 21 is connected to the base 10 and can rotate relative to the base 10 when driven by an external force. The drive shaft 21 has a first end surface 211 and a second end surface 212 which are arranged opposite to each other in the axial direction X thereof, and an air suction passage 213 which extends through the first end surface 211 and the second end surface 212. The kneading member 22 is provided on the first end surface 211. The transmission shaft 21 is used for driving the kneading component 22 to rotate along the circumferential direction Y of the transmission shaft 21 so as to knead the end surface 101 of the flat battery core 100. The kneading member 22 has a kneading surface 221 a. In the kneading and flattening process, the battery cell 100 is held by a jig. The jig or the cell end surface shaping device 1 is moved in the axial direction X of the transmission shaft 21 so that the end surface 101 of the cell 100 gradually approaches the flattening member 22 and finally comes into contact with the rotating flattening member 22. When the flattening member 22 rotates, the flattening member 22 can flatten the end surface 101 of the roll piezoelectric core 100 by the flattening surface 221 a. The suction passage 213 is located inside the drive shaft 21. The pumping channel 213 has an inlet port 213a and an outlet port 213 b. The air inlet 213a is disposed on the first end surface 211, and the air outlet 213b is disposed on the second end surface 212. The air inlet 213a of the suction passage 213 is provided near the kneading flat member 22, but does not contact the kneading flat member 22. When the transmission shaft 21 drives the kneading and flattening part 22 to rotate synchronously, air can be sucked from the air inlet 213a through the air suction channel 213 and then discharged from the air outlet 213b, so that negative pressure is generated in the region of the kneading and flattening part 22.
The cell end face shaping device 1 of the embodiment of the present invention includes a flattening member 22 that can rotate synchronously with the transmission shaft 21. The end surface 101 of the battery cell 100 is flattened by the flattening member 22. Since the drive shaft 21 itself has the suction channel 213, air can be sucked from the space area near the kneading flat parts 22 through the suction channel 213 to generate a negative pressure near the kneading flat parts 22. Like this, when battery core terminal surface shaping device 1 carries out to rub and level the shape action, can in time, fast and effectively take out the metal piece from rubbing the flat station through air exhaust channel 213 on transmission shaft 21 simultaneously to this reduces the possibility that the metal piece freely scatters, thereby reduces to lead to electric core physics from discharging to increase because of the metal piece is handled untimely, even gets into inside the electric core and arouses positive plate and negative pole piece short circuit, perhaps scatters inside the equipment, leads to cross contamination's possibility. The cell end face shaping device 1 provided by the embodiment of the invention can realize synchronous implementation of the kneading and flattening process and the dust removal process. The cell end face shaping device 1 according to the embodiment of the present invention can more effectively reduce the possibility that metal chips are scattered freely or enter the interior of the battery cell 100, compared to a mode in which the flattening step and the dust removal step are performed sequentially in the front-rear order and a mode in which a stationary side dust removal pipe is provided near the flattening member 22.
In one embodiment, referring to FIG. 2, the base 10 includes a horizontal support 11 and a vertical support 12. The horizontal bracket 11 is detachably connected with the vertical bracket 12. The horizontal support 11 provides the mounting base. The base 10 may be mounted to other mounting platforms by horizontal brackets 11. In one example, the vertical support 12 includes a bearing mount and a bearing disposed on the bearing mount. The transmission shaft 21 is connected with the bearing sleeve. The drive shaft 21 is connected to the bearing housing by a bearing. The bearing can be a rolling bearing or a sliding bearing.
In one embodiment, the number of flattening elements 22 may be one. When the transmission shaft 21 drives the flattening member 22 to rotate synchronously, the flattening surface 221a of the flattening member 22 sequentially rolls the whole end surface 101 of the battery core 100. As shown in fig. 2, the number of the flattening members 22 may be two or more, and the two or more flattening members 22 are provided uniformly on the first end surface 211 in the circumferential direction Y of the propeller shaft 21. When the transmission shaft 21 drives the flattening members 22 to rotate synchronously, the flattening surfaces 221a of the flattening members 22 roll the entire end surface 101 of the battery core 100 together.
In one embodiment, the pumping channel 213 includes a tapered bore section proximate the inlet port 213a and a straight bore section proximate the outlet port 213 b. The larger diameter opening of the conical bore section forms the inlet opening 213a, while the smaller diameter opening is connected to the straight bore section.
In one embodiment, the number of the air inlets 213a may be one. The center of the air inlet 213a coincides with the center of the drive shaft 21, thereby being advantageous to ensure uniformity of flow velocity and flow rate of the air flow in each direction. In one example, at least part of the orthographic projection of the flattening member 22 is located inside the orthographic projection of the air inlet 213a along the axial direction X of the drive shaft 21, so that the air inlet 213a can effectively draw air from the area near the flattening member 22 and can effectively draw metal chips away from the flattening station. The diameter of the air inlet 213a is larger than that of the end surface 101 of the battery cell 100, so that the suction range can be increased, and metal debris on the periphery of the end surface 101 of the battery cell 100 can be effectively sucked away. In another example, the air inlet 213a and the kneading flat part 22 are arranged offset in the axial direction X of the transmission shaft 21, that is, there is no overlapping area between the air inlet 213a and the kneading flat part 22 in the axial direction X of the transmission shaft 21. The kneading member 22 does not block the air inlet 213a in the axial direction X of the drive shaft 21.
In another embodiment, as shown in fig. 2 or fig. 3, the number of the air inlets 213a may be two or more. The two or more air inlets 213a are uniformly provided in the first end surface 211 along the circumferential direction Y of the propeller shaft 21. The two or more air inlets 213a can simultaneously extract the metal chips in the vicinity of the corresponding kneading and flattening members 22, which is advantageous for increasing the extraction range and improving the work efficiency of extracting the metal chips. In one example, the number of the flattening members 22 may be two or more. The air inlets 213a and the corresponding flattening members 22 are provided at intervals in the axial direction X of the transmission shaft 21 so that a gap is provided therebetween. Alternatively, the air inlet 213a and the kneading member 22 are disposed in a staggered manner along the axial direction X of the transmission shaft 21, that is, there is no overlapping area between the air inlet 213a and the kneading member 22 along the axial direction X of the transmission shaft 21. The kneading member 22 does not block the air inlet 213a in the axial direction X of the drive shaft 21. Alternatively, one or more than two air inlets 213a are correspondingly arranged between two adjacent kneading flat parts 22.
In one embodiment, referring to fig. 4, the fairing assembly 20 also includes a vent tube body 23. The breather pipe body 23 is provided on the first end surface 211 and communicates with the intake port 213 a. Air from the area of the flattening station can pass through the breather tube body 23 into the suction channel 213. The breather tube body 23 is disposed to protrude from the first end surface 211 so that the breather tube body 23 can be closer to the kneading member 22. In the flattening process, the vent tube body 23 may be closer to the end surface 101 of the battery cell 100, so that air can be directly sucked and metal debris can be sucked away in an area closer to the end surface 101 of the battery cell 100. In one example, when the end surface 101 of the battery cell 100 is in the flat-kneading station, the distance between the vent tube body 23 and the end surface 101 of the battery cell 100 is kept between 2mm and 10 mm. Thus, after the vent pipe body 23 is arranged, the shaping assembly 20 can more quickly and efficiently draw out the metal scraps falling off from the end surface 101 of the battery cell 100 to rub the flat station, which is beneficial to further reducing the possibility that the metal scraps are scattered freely or enter the interior of the battery cell. The breather pipe body 23 is detachably connected to the transmission shaft 21, so that later-period replacement and maintenance are facilitated. Alternatively, the breather tube body 23 is directly threadedly connected to the drive shaft 21. Alternatively, the breather tube body 23 may be attached to the drive shaft 21 by screws. In one example, the end of the breather tube body 23 near the first end face 211 is in sealing engagement with the drive shaft 21, reducing the likelihood of air leakage between the end of the breather tube body 23 near the first end face 211 and the drive shaft 21, which can lead to poor pumping. In one example, referring to FIG. 5, the section of the vent tube body 23 distal from the first end surface 211 is flat. In one example, the vent tube body 23 is an insulating structure. The material of the vent body 23 may be an insulating material such as rubber, plastic or silicone.
In one embodiment, the pumping channel 213 has an inlet port 213a, and the breather tube body 23 has a main tube and a plurality of branch tubes. A plurality of branch pipelines all are connected with the trunk line. The main pipe of the breather pipe body 23 is connected to the transmission shaft 21 and is disposed corresponding to the air inlet 213 a. Air in the area of the kneading and flattening station can enter the main pipeline from the branch pipeline and then enter the air suction channel 213. The branch pipes are arranged offset from the kneading members 22 in the axial direction X of the drive shaft 21, i.e., there is no overlapping area between the branch pipes and the kneading members 22 in the axial direction X of the drive shaft 21. The kneading member 22 does not block the orifice of the branch pipe in the axial direction X of the drive shaft 21. In one example, the number of the flattening members 22 is two or more. One or more than two branch pipes are correspondingly arranged between two adjacent kneading flat parts 22. In another embodiment, the suction passage 213 has more than two air inlets 213a, and the main pipe of the breather tube body 23 communicates with all the air inlets 213a at the same time.
In one embodiment, as shown in FIG. 4, the pumping channel 213 has an inlet 213a, and the vent tube body 23 is a single tube structure. In one example, the orifices of the vent tube bodies 23 and the corresponding flattening members 22 are spaced apart in the axial direction X of the drive shaft 21 so that there is a gap between the orifices of the vent tube bodies 23 and the corresponding flattening members 22. In the axial direction X of the drive shaft 21, at least part of the orthographic projection of the flattening member 22 is located inside the orthographic projection of the orifice of the breather tube body 23. In another example, the breather pipe body 23 and the flattening member 22 are arranged in a staggered manner along the axial direction X of the transmission shaft 21, that is, there is no overlapping area between the breather pipe body 23 and the flattening member 22 along the axial direction X of the transmission shaft 21. The kneading member 22 does not block the orifice of the breather pipe body 23 in the axial direction X of the drive shaft 21. In another embodiment, as shown in FIG. 5, the pumping channel 213 has more than two inlets 213 a. The number and positions of the breather pipe bodies 23 are arranged in one-to-one correspondence with the number and positions of the intake ports 213 a. In one example, referring to fig. 6, each vent tube body 23 is offset from the flattening member 22 along the axial direction X of the transmission shaft 21, i.e., there is no overlapping area between the vent tube body 23 and the flattening member 22 along the axial direction X of the transmission shaft 21. The kneading member 22 does not block the orifice of the breather pipe body 23 in the axial direction X of the drive shaft 21. In one example, the number of the flattening members 22 is two or more. One or more than two vent pipe bodies 23 are correspondingly arranged between two adjacent kneading and flattening components 22.
In one embodiment, referring to FIG. 7, fairing assembly 20 also includes a mount 24. The mount 24 is attached to the first end surface 211. The kneading member 22 is rotatably connected to the mounting seat 24. The kneading member 22 has a connecting shaft 222. The connecting shaft 222 is connected to the mount 24 through a bearing. After the transmission shaft 21 drives the flattening component 22 to rotate and the flattening component 22 contacts with the end surface 101 of the battery cell 100, the flattening component 22 can rotate around the axis of the connection shaft 222, so that the friction resistance between the flattening surface 221a of the flattening component 22 and the end surface 101 of the battery cell 100 can be reduced, the scraping force of the flattening component 22 on the end surface 101 of the battery cell 100 can be reduced, and the flatness of the end surface 101 of the battery cell 100 can be improved. In one example, the axis of the connecting shaft 222 intersects the axis of the drive shaft 21 and the angle therebetween is acute. In one example, the mount 24 is slidably coupled to the first end surface 211 in a radial direction of the drive shaft 21. After the end surface 101 of the battery cell 100 is flattened by the flattening member 22, the entire mounting seat 24 may be slid outward away from the axis of the transmission shaft 21, so that the flattening member 22 gives way to the end surface 101 of the battery cell 100. The end surface 101 of the battery cell 100 may be in contact with the first end surface 211 of the transmission shaft 21. When the transmission shaft 21 rotates, the end surface 101 of the battery cell 100 may be rubbed and rolled by the first end surface 211, which is beneficial to further improving the flatness of the end surface 101 of the battery cell 100. In one example, the first end surface 211 of the drive shaft 21 is provided with a recess, while the mounting seat 24 is provided with a protrusion having a shape matching the recess. The mounting seat 24 is slidably connected to the recess of the drive shaft 21 by a protrusion.
In one embodiment, referring to fig. 7, the kneading member 22 includes a tapered kneading roller body 221. The flattening roller body 221 has a flattening surface 221a for flattening the end surface 101 of the flat battery cell 100. The kneading flat surface 221a is a tapered surface. The tapered surface has a bus bar thereon for contacting the end surface 101 of the battery cell 100. In one example, the generatrix of the conical surface is perpendicular to the axis of the drive shaft 21. In one example, the number of the flattening members 22 is two or more. The generatrices of the conical surfaces of the individual kneading elements 22 are in the same plane. Which is perpendicular to the axis of the drive shaft 21. In one example, the kneading roller body 221 is connected with the connecting shaft 222. The material of the kneading roller body 221 may be stainless steel. In the embodiment of providing the vent pipe body 23, the end surface of the vent pipe body 23 away from the first end surface 211 does not exceed the generatrix of the conical surface along the axial direction X of the transmission shaft 21, so as to avoid the position interference between the vent pipe body 23 and the end surface 101 of the battery cell 100.
In one embodiment, as shown in fig. 5 and 7, the drive shaft 21 includes a main shaft body 21a and a flange 21 b. The flange 21b is connected to one end of the main shaft body 21a in the axial direction X of the transmission shaft 21. The transmission shaft 21 is rotatably connected to the base 10 through a spindle body 21 a. The flange 21b has a first end surface 211, and the spindle body 21a has a second end surface 212. The air extraction passage 213 penetrates the spindle body 21a and the flange 21 b. The main shaft body 21a and the flange 21b are separately manufactured and then connected to form the transmission shaft 21, thereby being beneficial to reducing the overall processing difficulty of the transmission shaft 21. The flange 21b is detachably attached to the spindle body 21 a. Alternatively, the flange 21b is connected to the spindle body 21a by screws. When assembling the cell end surface shaping device 1, the flattening member 22 may be attached to the flange 21b in advance, and then the flange 21b may be attached to the main shaft body 21 a.
In one embodiment, referring to fig. 7, the pumping channel 213 includes a main hole 2131 disposed on the main shaft body 21a and a branch hole 2132 disposed on the flange 21 b. The number of the branch hole 2132 is two or more. The main hole 2131 includes a plurality of abutting grooves provided on an end surface of the main shaft body 21 a. The number and positions of the docking recesses and the number and positions of the branch ports 2132 are arranged in a one-to-one correspondence, so that each docking recess is communicated with the corresponding branch port 2132. The main bore 2131 has an air outlet 213b, and each of the branch bores 2132 has an air inlet 213 a. In one example, the breather tube body 23 is connected to the flange 21b and communicates with the branch port 2132.
In another embodiment, one hole section is provided on the flange 21b and another hole section is provided on the spindle body 21 a. The two bore segments together form the pumping channel 213. The air inlet 213a of the air suction passage 213 is provided on the flange 21b, and the air outlet 213b is provided on the main shaft body 21 a.
In one embodiment, referring to fig. 8, the cell end surface shaping device 1 further includes an air exhaust assembly 40. The air exhaust assembly 40 is connected to the end portion of the transmission shaft 21 far away from the kneading and flattening part 22, and the transmission shaft 21 can rotate relative to the air exhaust assembly 40, so that the situation that the air exhaust assembly 40 rotates along with the transmission shaft 21 to cause structural damage to cause air leakage and cannot form effective air exhaust is avoided. When the transmission shaft 21 rotates, the air-extracting component 40 is relatively static and cannot rotate along with the transmission shaft 21. The air-extracting assembly 40 includes an air-extracting duct 41 communicating with the air outlet 213b and an air extractor 42. The air extraction duct 41 is connected to an air extractor 42. The air extraction assembly 40 is used to generate a negative pressure and to extract air from the area near the flattening member 22 through the air extraction channel 213, so as to be able to extract metal debris generated at the end face 101 of the battery cell 100 in a timely manner. When the air exhaust assembly 40 works, the flow speed of the air flow in the air exhaust pipeline 41 is ensured to be greater than or equal to 10 mm/s.
In one embodiment, referring to fig. 9, the cell end surface shaping device 1 further includes a rotary joint 50. The rotary joint 50 connects the drive shaft 21 with the pumping assembly 40. The drive shaft 21 is rotatably connected to the rotary joint 50. The drive shaft 21 and the rotary joint 50 are detachably connected. The suction duct 41 is detachably connected to the rotary joint 50. The rotating joint 50 is used for connecting the transmission shaft 21 and the air exhaust pipeline 41, so that the connecting difficulty of the transmission shaft 21 and the air exhaust pipeline 41 can be reduced, and the connecting working efficiency is improved. In one example, the rotary joint 50 includes a sleeve 51 and a bearing 52. The drive shaft 21 is rotatably connected to one end of the sleeve 51 by a bearing 52. The bearing 52 may be a rolling bearing or a sliding bearing. The evacuation assembly 40 is attached to the other end of the sleeve 51. In another example, the rotary joint 50 further includes a seal body 53. The seal body 53 seals the transmission shaft 21 and the sleeve 51. The sealing body 53 does not rotate synchronously with the transmission shaft 21. Alternatively, the number of the sealing bodies 53 may be two or more. More than two sealing bodies 53 are arranged side by side along the axial direction X of the transmission shaft 21, which is favorable for further improving the sealing property between the transmission shaft 21 and the sleeve 51. In one example, the sealing body 53 may be a ring-shaped structure.
In one embodiment, referring to fig. 5 and 7, the cell end surface shaping device 1 further includes a driving assembly 30. The driving assembly 30 is connected to the transmission shaft 21 for driving the transmission shaft 21 to rotate relative to the base 10. The driving assembly 30 includes a driven pulley 31, a driving pulley 32, and a driving motor 33. The driven wheel 31 is sleeved outside the transmission shaft 21. The driven pulley 31 is located between both ends of the transmission shaft 21. The driving pulley 32 is connected with the driven pulley 31. The driving pulley 32 and the driven pulley 31 may be connected to each other by a timing belt, a chain, or a gear. The drive pulley 32 is connected to the output of a drive motor 33. The drive motor 33 may be a servo motor.
The cell end surface shaping device 1 of the embodiment of the present invention includes a base 10 and a shaping assembly 20. The fairing assembly 20 includes a drive shaft 21 and a flattening member 22. The kneading members 22 can be rotated in synchronism with the drive shaft 21. The drive shaft 21 has a suction passage 213. When the transmission shaft 21 drives the flattening part 22 to flatten and reshape the end surface 101 of the battery cell 100, metal debris generated by the end surface 101 of the battery cell 100 can be timely and effectively removed through the air exhaust channel 213, so that the possibility that the metal debris is freely scattered or enters the inside of the battery cell is reduced, and the yield of the battery cell product is improved.
While the invention has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the invention. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides a battery core terminal surface shaping device which characterized in that includes:
the kneading and flattening component is used for kneading and flattening the end surface of the battery cell; and the number of the first and second groups,
the transmission shaft is connected with the flattening part and used for driving the flattening part to rotate, the transmission shaft is provided with a first end face and a second end face which are oppositely arranged along the axial direction of the transmission shaft, and an air exhaust channel which penetrates through the first end face and the second end face, the air exhaust channel is provided with an air inlet and an air outlet, the air inlet and the flattening part are both arranged on the first end face, and the air outlet is arranged on the second end face;
the battery cell end face shaping device further comprises a vent pipe body, and the vent pipe body is arranged on the first end face in a protruding mode and communicated with the air inlet.
2. The cell end face shaping device according to claim 1, wherein the transmission shaft includes a main shaft body and a flange connected to one end of the main shaft body in an axial direction of the transmission shaft, the flange having the first end face, and the main shaft body having the second end face.
3. The cell end face shaping device according to claim 2, wherein the air suction channel includes a main duct provided in the main shaft body and two or more branch ducts provided in the flange, and the main duct is communicated with each of the branch ducts.
4. The cell end face shaping device according to claim 1, wherein the vent pipe body and the flattening member are arranged in a staggered manner in the axial direction of the transmission shaft, and there is no overlapping area between the vent pipe body and the flattening member in the axial direction of the transmission shaft; or a gap is formed between the vent pipe body and the flattening component along the axial direction of the transmission shaft, and at least part of the orthographic projection of the flattening component is positioned inside the orthographic projection of the pipe orifice of the vent pipe body in the axial direction of the transmission shaft.
5. The cell end face shaping device according to any one of claims 1 to 3, further comprising an air pumping assembly connected to an end of the transmission shaft away from the kneading and flattening member, wherein the air pumping assembly comprises an air pumping pipeline communicated with the air outlet.
6. The cell end face shaping device of claim 5, further comprising a rotary joint, wherein the rotary joint connects the transmission shaft and the air pumping assembly.
7. The cell end face shaping device of claim 6, wherein the rotary joint comprises a sleeve and a bearing, the transmission shaft is connected to one end of the sleeve through the bearing, and the air suction assembly is connected to the other end of the sleeve.
8. The cell end face shaping device of claim 7, wherein the rotary joint further comprises a seal body disposed between the transmission shaft and the sleeve.
9. The cell end face shaping device according to any one of claims 1 to 3, wherein, in the axial direction of the transmission shaft, at least part of the orthographic projection of the flattening member is located inside the orthographic projection of the air inlet.
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| CN202010190154.7A CN111048824B (en) | 2020-03-18 | 2020-03-18 | Battery cell end face shaping device |
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| CN202010190154.7A CN111048824B (en) | 2020-03-18 | 2020-03-18 | Battery cell end face shaping device |
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| CN112234241B (en) * | 2020-09-30 | 2024-02-09 | 武汉逸飞激光股份有限公司 | Rubbing roller, mechanical rubbing flat head, electric core rubbing device and rubbing method thereof |
| CN112803080A (en) * | 2020-12-28 | 2021-05-14 | 上海骄成机电设备有限公司 | End face leveling system and method |
| CN113113735B (en) * | 2021-04-16 | 2023-03-03 | 惠州亿纬锂能股份有限公司 | Kneading and flattening device |
| CN113560369B (en) * | 2021-07-15 | 2023-03-28 | 宁波久钜智能装备有限公司 | Electrode lug flattening method for full-electrode-lug cylindrical lithium battery |
| CN114744269A (en) * | 2022-03-16 | 2022-07-12 | 厦门海辰新能源科技有限公司 | Battery roll core rub flat device |
| CN114669631A (en) * | 2022-04-22 | 2022-06-28 | 武汉逸飞激光股份有限公司 | Method for flattening cylindrical battery cell lug |
| WO2023230890A1 (en) * | 2022-05-31 | 2023-12-07 | Techtronic Cordless Gp | Battery cell rubbing machine with adjustabale rubbing head assemblies |
| CN116116495B (en) * | 2023-01-16 | 2024-02-27 | 武汉逸飞激光股份有限公司 | Rub flat head and cylinder electricity core and rub flat device |
| CN115842221B (en) * | 2023-02-21 | 2023-06-20 | 苏州宇量电池有限公司 | Electric core flattening equipment and flattening method |
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| JPH1125960A (en) * | 1997-07-01 | 1999-01-29 | Fuji Photo Film Co Ltd | Method and device for correcting winding of battery |
| US20040216266A1 (en) * | 2002-11-06 | 2004-11-04 | Wayne Conrad | Construction of a vacuum cleaner |
| CN107150268B (en) * | 2017-06-12 | 2018-12-04 | 荆门思安机械设备有限公司 | A kind of hand-held concrete metope roughening device with dedusting function |
| CN107394248B (en) * | 2017-07-18 | 2022-02-01 | 武汉逸飞激光股份有限公司 | Battery cell end face flattening device |
| CN110165304A (en) * | 2019-06-28 | 2019-08-23 | 武汉逸飞激光设备有限公司 | A kind of battery core rubs leveling device |
| CN110883659A (en) * | 2019-11-01 | 2020-03-17 | 江苏永兴金融设备有限公司 | Steel grinding equipment and grinding method |
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