CN114535870A - Lithium battery welding equipment capable of preventing foil from being folded - Google Patents
Lithium battery welding equipment capable of preventing foil from being folded Download PDFInfo
- Publication number
- CN114535870A CN114535870A CN202111061757.8A CN202111061757A CN114535870A CN 114535870 A CN114535870 A CN 114535870A CN 202111061757 A CN202111061757 A CN 202111061757A CN 114535870 A CN114535870 A CN 114535870A
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- air
- foil
- connecting pipe
- lithium battery
- air outlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses lithium battery welding equipment for preventing a foil corner fold, which comprises an upper air outlet structure, a lower air outlet structure and a lithium battery positioned between the upper air outlet structure and the lower air outlet structure, wherein a welding seat is arranged at the lower part of a foil sheet of the lithium battery, a welding head is arranged at the upper part of the lithium battery, the upper air outlet structure comprises an upper air outlet, an upper connecting pipe and an air inlet pipe, the lower air outlet comprises a lower air outlet, a lower connecting pipe, and the lower connecting pipe is connected with the air inlet pipe. According to the invention, the tab foil of the lithium battery is placed between the upper air outlet structure and the lower air outlet structure, and the upper air outlet and the lower air outlet are aligned with the tab foil and simultaneously used for exhausting air, so that the tab foil is restored to be flat when the corner folding or edge warping occurs, the adjustment is rapid, and the tab foil cannot be damaged.
Description
Technical Field
The invention relates to lithium battery welding equipment, in particular to lithium battery welding equipment for preventing a foil from being folded.
Background
In the production process of lithium battery, it is necessary to weld multiple layers of tab foils together by putting the tab foil and tab lead together, then transmitting high-frequency vibration wave to the surfaces of the tab and tab lead, and under the condition of pressurization, making the surfaces of two objects rub against each other to form fusion between molecular layers, which is also called ultrasonic pre-welding. However, the thickness of the tab and the tab lead piece is very small, so that the phenomenon of folding, edge warping and even fracture is easily caused in the process, manual adjustment is needed, or pre-welding cannot be performed.
In order to improve the tearing problem of the tab foil, in the prior art, for example, a "pre-welding baffle device for improving the tearing of the tab foil" disclosed in the chinese patent document, which is disclosed in the publication No. CN210172794U, includes a welding head and a welding seat, the baffle is disposed in front of the welding head, i.e. the tab foil stretches into the direction during welding, the baffle is disposed above the welding seat, a pressure rod for providing pressure is disposed above the baffle, the baffle is fixedly connected with the pressure rod and perpendicular to the welding seat, an inclined plane of the front surface of the baffle close to the bottom surface and a plane of the back surface perpendicular to the upper surface of the welding seat form an oblique angle, the oblique angle is a round angle, through a press-fit point formed by the baffle and the welding seat, the ultrasonic welding is mechanically prevented from pulling the tab foil, the tearing risk of the tab foil of the battery core is reduced, the down debugging time of the device is reduced, but the battery core foil seriously upwarps the battery core break angle problem and the foil upwarps problem of the lower surface, and foil crushing is easily caused by improper position of the pressing plate and overlarge pressure.
Disclosure of Invention
The invention aims to solve the problems of serious upwarping and folding angle of a battery cell foil and upwarping of the foil on the lower surface of a battery cell in the existing equipment or production process, and provides a device for blowing the foil flat by using a blowing device.
The invention is realized by the following technical scheme: the utility model provides a prevent lithium cell welding equipment at foil dog-ear, includes air-out structure and air-out structure down to and be located air-out structure and the lithium cell between the air-out structure down, the foil sheet lower part of lithium cell is equipped with the welding seat, and lithium cell upper portion is provided with the bonding tool, the face of going up air-out structure down is provided with a plurality of air outlets, goes up air outlet structure side and is provided with the connecting pipe, is connected with the intake pipe on going up the connecting pipe, the face of air-out structure up air-out structure down is provided with a plurality of air outlets down, and air outlet structure side is provided with down the connecting pipe down, is connected with the intake pipe on the connecting pipe down.
During welding, the lug foil of the lithium battery is placed between the upper air outlet structure and the lower air outlet structure, the upper air outlet and the lower air outlet aim at the lug foil to simultaneously exhaust air, so that the lug foil keeps flat, then the lug foil of the lithium battery is moved to the welding seat, the foil is pressed by the welding head, then air blowing is stopped, and welding is started.
Preferably, the upper air outlet and the lower air outlet are in one-to-one correspondence with each other in number, so that the upper air outlet and the lower air outlet are guaranteed to be symmetrical to the air pressure formed by the tab foil, and the tab foil is guaranteed to be in a roughly flat state.
Preferably, the upper connecting pipe extends towards the interior of the upper air outlet mechanism to form an upper main air pipeline, the upper air outlet extends upwards to form a last air pipeline, and the last air pipeline is vertically connected with the upper main branch pipeline; the lower connecting pipe extends downwards to the inside of the air outlet mechanism to form a lower main air pipeline, the lower air outlet extends downwards to form a lower secondary air pipeline, the lower secondary air pipeline is vertically connected with the lower main air pipeline, and air inlet equipment is connected to the connecting pipe during use to finish air outlet of the air outlet.
Preferably, the upper main air duct is in a horn shape, and the cross section area of one side of the upper connecting pipe is the smallest; the main air duct is tubaeform down, and connecting pipe side sectional area is minimum down, and tubaeform main air duct can make the air pressure of main air duct before getting into the secondary air duct roughly equal, guarantees the wind pressure relative balance of every secondary air duct exit, avoids producing the shearing force to the foil because pressure differential is too big.
Preferably, the last air duct and the next air duct are inclined to the lithium battery at the same angle, so that the air outlet direction is from the root of the tab to the tail end of the tab, the foil state of the tab is easier to adjust, the positions of the upper air outlet structure and the lower air outlet structure are farther away from the welding head, and mutual interference of actions in the welding process is avoided.
Preferably, a circle of sealing ring is arranged in the air inlet pipe, a sealing groove is formed in the position, corresponding to the connecting pipe, of the connecting pipe, an inflation pipe is connected to the sealing ring and connected to the outside of the air inlet pipe, a piston is arranged in the inflation pipe and hinged to the middle section of an adjusting rod hinged to the outer wall of the connecting pipe, the piston is pulled by rotating the adjusting rod, the piston is pushed inwards, the size of the sealing ring can be increased, the sealing effect is enhanced, and the piston is pulled out when the air inlet pipe needs to be taken out.
Preferably, the side wall of the piston is recessed inwards to form an air leakage channel with the inner wall of the inflation tube, the air leakage channel is provided with a check sheet, when the piston is pushed to the innermost part, the sealing effect of the air inlet tube and the connecting tube is still insufficient, the adjusting rod can be rotated repeatedly, and then the piston can be pushed and pulled repeatedly.
Preferably, the upper blowing mechanism is provided with a pushing device capable of moving up and down, and the lower blowing mechanism is fixed.
Preferably, the tail end of the air inlet pipe is provided with a buckle, and a buckle groove is formed in the corresponding position of the connecting pipe, so that the air inlet pipe is convenient to mount and fix.
Therefore, the invention has the following beneficial effects:
put the utmost point ear foil of lithium cell between last air-out structure and the air-out structure down, go up the air outlet and aim at utmost point ear foil air-out simultaneously with lower air outlet for utmost point ear foil takes place to dog-ear or restores to level when sticking up the limit, and the adjustment is quick, and can not produce the damage to utmost point ear foil.
Drawings
FIG. 1 is a perspective view of a first embodiment of the present invention;
fig. 2 is a cross-sectional view of a lower main air duct cut by the lower air outlet structure according to the second embodiment of the present invention;
fig. 3 is a cross-sectional view of a lower main air duct cut by the lower air outlet structure according to the first embodiment of the present invention;
fig. 4 is a cross-sectional view of an intake pipe according to a first embodiment of the present invention. .
In the figure: the air conditioner comprises an upper air outlet structure 1, an upper connecting pipe 11, a lower air outlet structure 2, a lower connecting pipe 21, a lower air outlet 22, a lower main air pipeline 23, a lower secondary air pipeline 24, a tab foil 3, a welding head 4, an air inlet pipe 5, a sealing ring 51, a sealing groove 52, a piston 53, an adjusting rod 54 and a welding seat 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Embodiment one, as shown in fig. 1, a lithium battery welding equipment for preventing foil dog-ear, includes last air-out structure 1 and air-out structure 2 down to and be located the lithium cell between air-out structure 1 and the air-out structure 2 down, 3 lower parts of utmost point ear foil of lithium cell are equipped with welds seat 6, and lithium cell upper portion is provided with bonding tool 4, the face of going up air-out structure towards air-out structure down is provided with a plurality of air outlets, goes up air-out structure 1 side and is provided with connecting pipe 11, is connected with intake pipe 5 on going up the connecting pipe, the face of air-out structure towards air-out structure is provided with a plurality of air outlets 22 down, and air-out structure side is provided with down connecting pipe 21 down, is connected with intake pipe 5 on the lower connecting pipe 21, goes up the air-out structure and is provided with the foil that extends from the lithium cell down between the air-out structure.
During the welding, put between last air-out structure 1 and lower air-out structure 2 with utmost point ear foil 3 of lithium cell, go up air outlet and air outlet down and aim at utmost point ear foil 3 and air-out simultaneously for utmost point ear foil keeps leveling, then moves the utmost point ear foil of lithium cell and to weld on seat 6, and bonding tool 4 pushes down the foil, then bloies and stops, and the welding begins.
The positions of the upper air outlet and the lower air outlet are in one-to-one correspondence with the number of the upper air outlet and the lower air outlet, so that the upper air outlet and the lower air outlet are symmetrical to the air pressure formed by the tab foil 3, and the tab foil is in a roughly flat state.
As shown in fig. 2, the upper connecting pipe extends towards the inside of the upper air outlet mechanism to form an upper main air duct, the upper air outlet extends upwards to form a last air duct, and the last air duct is vertically connected to the upper main branch duct; correspondingly, the lower connecting pipe 21 extends downwards to the inside of the air outlet mechanism to form a lower main air pipeline 23, the lower air outlet 22 extends downwards to form a lower secondary air pipeline 24, the lower secondary air pipeline 24 is vertically connected with the lower main air pipeline 23, and air inlet equipment is connected to the connecting pipe to finish air outlet of the air outlet when the air outlet mechanism is used.
Last wind pipeline and next wind pipeline incline the same angle to the lithium cell direction, therefore the direction of air-out is from the root of utmost point ear foil 3 to utmost point ear terminal, and it is easier to adjust utmost point ear foil state, and can make the position of going up air-out structure 1 and air-out structure 2 down farther from the bonding tool, the mutual interference of action when avoiding welding process.
As shown in fig. 3, a circle of sealing ring 51 is arranged in the air inlet pipe, a sealing groove 52 is arranged at the corresponding position of the connecting pipe, an inflation pipe is connected to the sealing ring and is connected to the outside of the air inlet pipe, a piston 53 is arranged in the inflation pipe, the piston 53 is hinged with the middle section of an adjusting rod 54 hinged on the outer wall of the connecting pipe, and the piston 53 is pulled by rotating the adjusting rod 54. When the adjusting rod rotates to be parallel to the outer wall of the air inlet pipe, the piston pushes inwards, the size of the sealing ring 51 can be increased, and the sealing effect is enhanced; when the intake pipe need take out, then rotate the regulation pole to when perpendicular with the intake pipe outer wall, the piston is pulled out, and the sealing washer volume reduces, can easily part intake pipe and connecting pipe.
The side wall of the piston 53 is concave and forms an air leakage channel (not shown in the figure) with the inner wall of the inflation tube, the air leakage channel is provided with a check sheet, when the piston is pushed to the innermost part, the sealing effect of the air inlet tube and the connecting tube is still insufficient, the adjusting rod can be rotated repeatedly, and then the piston can be pushed and pulled repeatedly.
The upper blowing mechanism is provided with a pushing device which can move up and down, and the lower blowing mechanism is fixed.
The intake pipe end is provided with the buckle, and the connecting pipe corresponds the position and is provided with the buckle groove, plays easy to assemble and fixed effect.
In the second embodiment, as shown in fig. 3, the upper main air duct is in a trumpet shape, and the cross-sectional area of one side of the upper connecting pipe is the smallest; the main air duct is tubaeform down, and connecting pipe side sectional area is minimum down, and tubaeform main air duct can make the air pressure of main air duct before getting into the secondary air duct roughly equal, guarantees the wind pressure relative balance of every secondary air duct exit, avoids producing the shearing force to the foil because pressure differential is too big.
In conclusion, the invention adopts a blowing non-contact mode before welding to level the foil by adding blowing structures up and down. The method is simple and effective, has lower cost, and reduces the defective product rate of ultrasonic welding from 4.3 percent to less than 0.1 percent.
Claims (9)
1. The utility model provides a prevent lithium cell welding equipment of foil dog-ear, includes air-out structure and air-out structure down to and be located air-out structure and the lithium cell between the air-out structure down, the foil piece lower part of lithium cell is equipped with welds the seat, and lithium cell upper portion is provided with the bonding tool, its characterized in that, the face of going up air-out structure orientation air-out structure down is provided with a plurality of air outlets, goes up air-out structure side and is provided with the connecting pipe, is connected with the intake pipe on going up the connecting pipe, the face of air-out structure orientation air-out structure is provided with a plurality of air outlets down, and air-out structure side is provided with down the connecting pipe down, is connected with the intake pipe on the connecting pipe down.
2. The lithium battery welding apparatus for preventing the corner folding of the foil as claimed in claim 1, wherein: the positions and the number of the upper air outlets and the lower air outlets are in one-to-one correspondence.
3. The lithium battery welding apparatus for preventing the corner folding of the foil as claimed in claim 1, wherein: the upper connecting pipe extends towards the interior of the upper air outlet mechanism to form an upper main air pipeline, the upper air outlet extends upwards to form a secondary air pipeline, and the secondary air pipeline is vertically connected with the upper main air pipeline; the lower connecting pipe extends downwards to the inside of the air outlet mechanism to form a lower main air pipeline, the lower air outlet extends downwards to form a lower secondary air pipeline, and the lower secondary air pipeline is vertically connected with the lower main air pipeline.
4. The lithium battery welding apparatus for preventing the corner folding of the foil as claimed in claim 1, wherein: the upper main air pipeline is horn-shaped, and the sectional area of one side of the upper connecting pipe is the smallest; the lower main air pipeline is horn-shaped, and the sectional area of one side of the lower connecting pipe is the smallest.
5. The lithium battery welding apparatus for preventing the corner folding of the foil as claimed in claim 1 or 2, wherein: the last air pipeline and the next air pipeline incline to the lithium battery at the same angle.
6. The lithium battery welding apparatus for preventing the corner folding of the foil as claimed in claim 2, 3 or 4, wherein: the air inlet pipe is internally provided with a circle of sealing ring, a sealing groove is arranged at the corresponding position of the connecting pipe, an inflation pipe is connected to the sealing ring and is connected to the outside of the air inlet pipe, a piston is arranged in the inflation pipe, and the piston is hinged to the middle section of an adjusting rod hinged to the outer wall of the connecting pipe.
7. The lithium battery welding apparatus for preventing the corner folding of the foil as claimed in claim 2, wherein: the side wall of the piston is concave inwards to form an air leakage channel with the inner wall of the inflation tube, and the air leakage channel is provided with a check sheet.
8. The lithium battery welding apparatus for preventing the corner folding of the foil as claimed in claim 2 or 7, wherein: the upper blowing mechanism is provided with a pushing device capable of moving up and down, and the lower blowing mechanism is fixed.
9. The lithium battery welding apparatus for preventing the corner folding of the foil as claimed in claim 2 or 7, wherein: the intake pipe end is provided with the buckle, and the connecting pipe corresponds the position and is provided with the buckle groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061757.8A CN114535870A (en) | 2021-09-10 | 2021-09-10 | Lithium battery welding equipment capable of preventing foil from being folded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061757.8A CN114535870A (en) | 2021-09-10 | 2021-09-10 | Lithium battery welding equipment capable of preventing foil from being folded |
Publications (1)
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| CN114535870A true CN114535870A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111061757.8A Pending CN114535870A (en) | 2021-09-10 | 2021-09-10 | Lithium battery welding equipment capable of preventing foil from being folded |
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| CN210172794U (en) * | 2019-05-30 | 2020-03-24 | 万向一二三股份公司 | Improve torn prewelding retaining device of utmost point ear foil |
| CN210648994U (en) * | 2019-09-20 | 2020-06-02 | 成都市银隆新能源产业技术研究有限公司 | Lithium ion battery tab shaping and anti-sticking welding device |
| CN210920520U (en) * | 2019-11-25 | 2020-07-03 | 江苏贝德管道设备有限公司 | Spherical compensator with pressure leakage stoppage |
| CN213332631U (en) * | 2020-08-13 | 2021-06-01 | 江苏圣迪德智能科技有限公司 | Carbon steel gas meter connector for ultralow temperature ball valve |
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2021
- 2021-09-10 CN CN202111061757.8A patent/CN114535870A/en active Pending
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| CN204594166U (en) * | 2015-03-06 | 2015-08-26 | 珠海亚泰电子科技有限公司 | A kind of air-floatation type oven |
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| CN208284557U (en) * | 2018-05-18 | 2018-12-25 | 东莞塔菲尔新能源科技有限公司 | A kind of lithium battery pole slice rapid cooling system |
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