CN111112827A - Automatic vibration leveling system and vibration leveling method for soft-package battery module lug - Google Patents
Automatic vibration leveling system and vibration leveling method for soft-package battery module lug Download PDFInfo
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- CN111112827A CN111112827A CN201911366701.6A CN201911366701A CN111112827A CN 111112827 A CN111112827 A CN 111112827A CN 201911366701 A CN201911366701 A CN 201911366701A CN 111112827 A CN111112827 A CN 111112827A
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- battery module
- walking device
- tab
- soft
- welding machine
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0433—Molding
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses an automatic vibration leveling system and method for a soft-package battery module lug, and belongs to the field of new energy automobiles. The vibration leveling system comprises a rack, a battery module walking device, a servo motor, an ultrasonic welding machine and a PLC control screen; the battery module walking device comprises a plurality of mounting platforms which are arranged on the sliding blocks and are used for fixing the battery module with the tabs to be leveled through screw rod transmission; the ultrasonic welding machine is located above the battery module walking device and controls the work of the battery module walking device through the PLC control screen. The invention can flexibly set related control programs according to different lug leveling quantities of different battery modules, and the lug is leveled with highest vibration efficiency by setting the falling pressure of the welding head.
Description
Technical Field
The invention belongs to the field of new energy automobiles, and particularly relates to an automatic vibration leveling system and method for a soft-package battery module tab.
Background
Various battery packs are required to be used on the new energy automobile, and power sources are provided for the automobile in a series-parallel connection mode. The battery cell in the battery pack has the forms of a hard shell, a soft bag and the like. The invention aims at a soft package battery cell. After the module is formed by the soft package battery cell, the tabs are generally required to be connected to the busbar, so that each single battery cell forms a required series-parallel connection mode, and the module is ensured to reliably output stable direct-current voltage and capacity. Laser welding is one of the ways that is currently used. Before laser welding, the welding part is generally required to be smooth. The invention relates to a method for flattening a tab (tab material is copper or aluminum and is in a sheet form) after the tab is bent to a busbar.
The existing leveling modes include manual small iron hammer leveling, automatic small roller leveling in a laser welding station and the like, and have the following defects:
(1) the conditions of serious deformation of the busbar, low efficiency, easy fatigue of operators and the like caused by missing smashing and over-violent exertion easily occur in manual smashing;
(2) the laser welding station uses automatic small-size cylinder to make a round trip to roll flat, because the busbar can not bear too big pressure, utmost point ear is the roll formula atress moreover, the unable condition of rolling flat effectively of burr at utmost point ear edge can appear.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an automatic flattening system and a flattening method for a soft-package cell battery module lug, aiming at solving the problems that the manual flattening by an iron hammer is easy to cause error and leakage, and the rolling by an automatic small roller in a laser welding station is easy to cause the phenomenon that the burrs at the edge of the lug cannot be effectively rolled.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an automatic vibration leveling system for a soft-package battery module lug comprises a rack, a battery module walking device, a servo motor, an ultrasonic welding machine and a PLC control screen; the frame is provided with a guide rail, the battery module walking device is arranged on the guide rail, the ultrasonic welding machine is positioned above the guide rail, and the PLC control screen is connected with the ultrasonic welding machine; the battery module walking device comprises a screw rod sliding block pair and a mounting platform fixed on the screw rod sliding block pair, the screw rod sliding block pair is mounted on the guide rail, and the servo motor is connected with the screw rod sliding block pair.
Preferably, the mounting table of the battery module walking device comprises an upper plate and a lower plate, the lower plate is fixed on the screw rod sliding block pair, the upper plate is mounted on the lower plate, and the upper plate can rotate.
Preferably, the rack is provided with a jacking plate, and when the mounting table runs above the jacking plate, the jacking plate can penetrate through the lower plate of the mounting table and drive the upper plate of the mounting table to lift and rotate.
Preferably, the working surface of the welding head of the ultrasonic welding machine is a plane, and the area of the working surface is larger than that of the bending side of the tab. The welding head of the ultrasonic welding machine adopted by the invention is different from the welding head of the common ultrasonic welding, and the contact part of the welding head and the lug of the invention is made into a smooth and straight shape, preferably a rectangle (which can be replaced according to the size and the shape of different lugs).
Preferably, the welding head of the ultrasonic welding machine is made of die steel.
In the working process, the ultrasonic welding machine converts 50Hz commercial power into a 20KHz frequency sinusoidal signal by using an ultrasonic generator, the sinusoidal signal is converted into mechanical motion with the same frequency through a transducer again, then the mechanical motion is transmitted to a welding head, the welding head transmits the received vibration energy to the surface of the lug to be vibrated and leveled, in the area, the vibration energy flattens the contact part of the lug and the busbar, and the rest is converted into heat energy to be consumed.
The invention has the following beneficial effects:
the invention can effectively solve the problems that the manual hammering by using an iron hammer is easy to miss and leak, and the rolling by using an automatic small roller in a laser welding station is easy to cause that the burrs at the edge of a tab cannot be effectively rolled, and comprises the following steps:
(1) according to the leveling quantity of different lugs of different battery modules, related control programs can be flexibly set, and as long as the reference direction is determined, the ultrasonic welding machine automatically levels the lugs at each determined position according to a preset program, so that the possible missing smashing condition is avoided; the welding head falls under the control of air pressure, so that the situation that the busbar is bent by too hard force cannot occur as long as the air pressure is set to a proper value; the battery module walking device advances through speed adjustable lead screw realization, and the time when ultrasonic bonding is very short to efficiency has been improved greatly, also the tired condition of operating personnel does not exist.
(2) Ultrasonic welding machine sends high frequency mechanical vibration through the transducer, then through the bonding tool on using utmost point ear, because the area of the working face of bonding tool is greater than the area that utmost point ear was buckled the side, can shake the level effectively with the tiny deckle edge that leaves when utmost point ear is die-cut to the roughness of utmost point ear with the busbar laminating has been guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of an automatic vibration leveling system for a tab of a battery module of a soft-package cell according to the invention;
FIG. 2 is a top view of the entire shake-leveling system with the upper deck rotated;
in the figure: 1 battery module, 2 welding heads, 3 PLC control screens, 4 upper plates, 5 lower plates, 6 jacking plates, 7 frames, 8 lead screw sliding block pairs and 9 guide rails.
Detailed Description
The following provides a detailed description of preferred embodiments of the present invention.
An automatic vibration leveling system for a soft-package battery module tab is shown in fig. 1 and comprises a rack 7, a battery module walking device, a servo motor, an ultrasonic welding machine and a PLC control screen 3; the frame 7 is provided with a guide rail 9, the battery module walking device is installed on the guide rail 9, the ultrasonic welding machine is located above the guide rail 9, and the PLC control screen 3 is connected with the ultrasonic welding machine.
The ultrasonic welding machine used in this example was produced by sinono ultrasonic technology ltd, and the overall machine size was L W H: 1800mm 800mm 1200mm, in semi-automatic form. The rated power of the ultrasonic welding machine is 3000W and 20Khz, and the welding head is made of die steel.
The battery module walking device comprises a screw slider pair 8 and a mounting table fixed on the screw slider pair 8, the screw slider pair is mounted on the guide rail, the servo motor is connected with the screw slider pair 8 and driven by the servo motor, and the power of the servo motor is 1.5 Kw.
As a preferred embodiment of the present invention, the mounting table of the battery module traveling device includes an upper plate 5 and a lower plate, the lower plate being fixed to the slider, and the upper plate 4 being mounted on the lower plate 5. And when the mounting table runs above the jacking plate, the jacking plate can penetrate through a lower layer plate of the mounting table and drive an upper layer plate of the mounting table to lift and rotate. For example, a hole for passing the lifting plate can be arranged on the lower plate of the mounting table to realize the contact of the lifting plate and the upper plate. The schematic view of the entire system when the upper deck 4 is rotated is shown in fig. 2. In a preferred embodiment of the present invention, the working surface of the ultrasonic welding machine 2 has an area larger than the area of the bent side of the tab, and is smooth and flat, and the working surface is preferably rectangular.
Adopt above-mentioned laminate polymer battery module utmost point ear automation to shake flat system and shake flat to utmost point ear, concrete step is:
step one, fixing the busbar on the battery module, preliminarily bending the lug on the battery module 1 to the direction needing to be attached to the busbar, and fixing the preliminarily bent battery module 1 with the busbar on an installation table of the battery module walking device.
And step two, setting the vibration leveling position (namely the position of the position to be vibrated leveled of the battery module) of the ultrasonic welding machine during working, the vibration leveling time to be 0.6s, the time delay protection time to be 1s, the triggering time to be 2.5s and the welding head falling pressure to be 0.22Mpa through the PLC control screen. The traveling speed of the battery module traveling device is controlled to be 10mm/s through the servo motor, and the amplitude of no-load sound waves of the ultrasonic generator is set to be 1.6A.
Step three, starting a system, when the battery module on the battery module walking device mounting table moves to a preset vibration level position, a first tab close to one side of the ultrasonic welding machine is positioned right below a welding head of the ultrasonic welding machine, and the welding head automatically falls down and vibrates the tab; and after the preset vibration leveling time is reached, the welding head is lifted, the battery module continues to move, and the vibration leveling process is repeated until all the lugs on one side of the battery module are vibrated to be level.
Step four, the battery module rotates 180 degrees along with the upper plate, and the upper plate falls down and is fixed on the lower plate; and (3) the battery module walking device reversely advances, and the ultrasonic welding machine automatically repeats the vibration leveling process in the step 3) until the lugs on the other side of the battery module on the mounting platform are completely vibrated to be level. In an embodiment of the present invention, the specific implementation manner of the battery module in which the upper plate rotates 180 degrees is as follows: the lifting plate is arranged on the rack, and when the battery module walking device continuously walks to the position above the lifting plate after the lugs on the single side of the battery module are completely vibrated to be flat, the lifting plate is lifted at the moment, and the upper plate of the mounting table is lifted and is driven to rotate; after the 180-degree rotation is completed, the jacking plate descends, and the upper plate of the mounting table falls down and is fixed on the lower plate. .
Step five, checking the flattened tab, wherein the specific method comprises the following steps: and when no gap or arch is seen between the lug and the bus bar, the lug after being flattened by vibration is qualified.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An automatic vibration leveling system for a tab of a battery module of a soft-package battery cell is characterized by comprising a rack, a battery module walking device, a servo motor, an ultrasonic welding machine and a PLC control screen; the frame is provided with a guide rail, the battery module walking device is arranged on the guide rail, the ultrasonic welding machine is positioned above the guide rail, and the PLC control screen is connected with the ultrasonic welding machine;
the battery module walking device comprises a screw rod sliding block pair and a mounting platform fixed on the screw rod sliding block pair, the screw rod sliding block pair is mounted on the guide rail, and the servo motor is connected with the screw rod sliding block pair.
2. The automatic vibration leveling system for the tab of the soft-package-cell battery module of claim 1, wherein the mounting table of the battery module walking device comprises an upper plate and a lower plate, the lower plate is fixed on the screw slider pair, the upper plate is mounted on the lower plate, and the upper plate can rotate.
3. The automatic vibration leveling system for the tab of the soft-package-cell battery module according to claim 2, wherein a lifting plate is mounted on the machine frame, and when the mounting table runs above the lifting plate, the lifting plate can penetrate through a lower plate of the mounting table and drive an upper plate of the mounting table to lift and rotate.
4. The automatic flattening system of laminate polymer cell battery module utmost point ear of claim 1, characterized in that, the working face of ultrasonic bonding machine bonding tool is the plane, and the area of working face is greater than the area of utmost point ear bending side.
5. The automatic flattening system of laminate polymer cell battery module utmost point ear of claim 1, characterized in that, the material of ultrasonic welding machine bonding tool is the mould steel.
6. The method for flattening the tab by adopting the automatic flattening system for the tab of the soft-package-cell battery module set of claim 2 is characterized by comprising the following steps of:
1) fixing the busbar on the battery module, preliminarily bending the lug on the battery module to the direction needing to be attached to the busbar, and fixing the preliminarily bent battery module with the busbar on an installation table of the battery module walking device;
2) the vibration leveling position, vibration leveling time and welding head falling pressure of the ultrasonic welding machine during working are set through the PLC control screen, and the advancing speed of the battery module walking device is controlled through the servo motor;
3) starting a system, when a battery module on a battery module walking device mounting table moves to a preset vibration level position, a first tab close to one side of an ultrasonic welding machine is positioned right below a welding head of the ultrasonic welding machine, and the welding head automatically falls down and vibrates the tab; after the preset vibration leveling time is reached, the welding head is lifted, the battery module continues to move, and the vibration leveling process is repeated until all the lugs on one side of the battery module are vibrated to be level;
4) the battery module rotates 180 degrees, the battery module walking device reversely advances, and the ultrasonic welding machine automatically repeats the vibration flattening process of the step 3) until the pole lugs on the other side of the battery module on the mounting table are completely vibrated to be flat.
7. The method for flattening the pole lug by using the automatic flattening system for the pole lug of the soft-package-cell battery module according to claim 6, wherein the traveling speed of the battery module traveling device is 10 mm/s.
8. The method for flattening the pole lug by using the automatic flattening system for the pole lug of the soft-package-cell battery module according to claim 6, wherein the flattening time is 0.6s, and the falling pressure of the welding head is 0.22 MPa.
9. The method for vibrating and leveling the tab by using the automatic tab vibrating and leveling system for the soft-package-cell battery module according to claim 6, wherein the rotating of the battery module by 180 degrees specifically comprises: the lifting plate is arranged on the rack, and when the battery module walking device continuously walks to the position above the lifting plate after the lugs on the single side of the battery module are completely vibrated to be flat, the lifting plate is lifted at the moment, and the upper plate of the mounting table is lifted and is driven to rotate; after the 180-degree rotation is completed, the jacking plate descends, and the upper plate of the mounting table falls down and is fixed on the lower plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911366701.6A CN111112827A (en) | 2019-12-26 | 2019-12-26 | Automatic vibration leveling system and vibration leveling method for soft-package battery module lug |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911366701.6A CN111112827A (en) | 2019-12-26 | 2019-12-26 | Automatic vibration leveling system and vibration leveling method for soft-package battery module lug |
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| CN111112827A true CN111112827A (en) | 2020-05-08 |
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| CN201911366701.6A Pending CN111112827A (en) | 2019-12-26 | 2019-12-26 | Automatic vibration leveling system and vibration leveling method for soft-package battery module lug |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115575850A (en) * | 2022-09-02 | 2023-01-06 | 湖北钛时代新能源有限公司 | Testing device for electric core vibration-leveling short circuit |
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2019
- 2019-12-26 CN CN201911366701.6A patent/CN111112827A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115575850A (en) * | 2022-09-02 | 2023-01-06 | 湖北钛时代新能源有限公司 | Testing device for electric core vibration-leveling short circuit |
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