CN113054232B - Battery module assembly method and battery module - Google Patents
Battery module assembly method and battery module Download PDFInfo
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- CN113054232B CN113054232B CN201911377414.5A CN201911377414A CN113054232B CN 113054232 B CN113054232 B CN 113054232B CN 201911377414 A CN201911377414 A CN 201911377414A CN 113054232 B CN113054232 B CN 113054232B
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- end plate
- assembly
- battery cell
- insulating
- battery
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/005—Devices for making primary cells
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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
Abstract
The invention discloses an assembly method of a battery module and the battery module, wherein a battery cell and a buffer pad are subjected to first pretreatment on a first assembly line to obtain a battery cell assembly; performing second pretreatment on the end plate and the insulating cover on a second assembly line to obtain an insulating end plate; finally, conveying the battery cell assembly and the insulating end plate to an assembly table for assembly to form a battery module; through put electric core and cushion and carry out first preliminary treatment on first assembly line, put end plate and insulating cover on the second assembly line and carry out the second preliminary treatment, will obtain electric core subassembly and insulating end plate again at last and carry to the assembly bench and assemble, form battery module to realized the automatic equipment to battery module, solved the assembly efficiency low problem of battery module.
Description
Technical Field
The present invention relates to the field of battery technologies, and in particular, to a method for assembling a battery module and a battery module.
Background
With the continuous development of society and the continuous progress of science and technology, the mechanized, automatic and standardized production has gradually become the development trend, and gradually replaces the traditional manual labor, thus injecting new power for the sustainable development of enterprises. Therefore, battery manufacturers are also required to advance with time, and mechanical automation equipment is greatly developed to replace the traditional manual labor through transformation and upgrading. However, at present, when the battery is assembled, a worker is generally used for carrying out plasma cleaning and gluing on the battery cell; then, a worker sets a welding process step on a computer, and the batteries are welded into groups by means of laser welding or resistance welding and the like; the manual participation in the production of the existing battery module is more, the production efficiency is extremely low, the productivity is seriously insufficient, and the production method is not suitable for accurate and efficient automatic production.
Disclosure of Invention
The invention aims to provide a battery module assembly method and a battery module, which are used for solving the problem of low assembly efficiency of the battery module.
In order to solve the above problems, the present invention provides an assembling method of a battery module, comprising:
performing first pretreatment on the battery cell and the buffer pad on a first assembly line to obtain a battery cell assembly;
performing second pretreatment on the end plate and the insulating cover on a second assembly line to obtain an insulating end plate;
and conveying the battery cell assembly and the insulating end plate to an assembly table for assembly to form the battery module.
Further, the first assembly line includes: cleaning station, first gluingMachine for making foodAnd a first laminating station;
on a first assembly line, performing a first pretreatment on the battery cell and the buffer pad to obtain a battery cell assembly, including:
conveying the battery cell to the cleaning station for plasma cleaning;
using the first glueMachine pairThe cell after plasma cleaning is coated with glue;
conveying the buffer cushion and the glued battery cell to the first bonding station for bonding to obtain a buffer battery cell, wherein the buffer battery cell comprises a buffer side;
and gluing the buffer side of the buffer battery cell to obtain a battery cell assembly.
Further, on the first assembly line, performing a first pretreatment on the battery cell and the buffer pad to obtain a battery cell assembly, and further comprising at least one of the following:
performing OCV test on the battery cell before plasma cleaning;
detecting the glued battery cell;
and detecting the buffer side of the glued buffer battery core.
Further, the second assembly line includes: the device comprises a double-layer reciprocating type feeding table, a triaxial platform, a first pedal line, a second gumming machine and a second attaching station;
and performing a second pretreatment on the end plate and the insulating cover on a second assembly line to obtain an insulating end plate, wherein the second pretreatment comprises the following steps:
conveying the end plate and the insulating cover to the double-layer reciprocating feeding table;
the triaxial platform alternately clamps the end plate and the insulating cover from the double-layer reciprocating type feeding table, wherein the triaxial platform clamps the end plate onto the first stepping line from the double-layer reciprocating type feeding table, and clamps the insulating cover onto the second stepping line from the double-layer reciprocating type feeding table;
alternately gluing the end plate on the first pedal wire and the insulating cover on the second pedal wire by adopting the second gluing machine;
and attaching the end plate after the gluing and the insulating cover after the gluing to obtain the insulating end plate.
Further, on the second assembly line, performing a second pretreatment on the end plate and the insulating cover to obtain an insulating end plate, and further including:
and alternately detecting the end plate after the gluing and the insulating cover after the gluing.
Further, the first tread line and the second tread line are alternately moved.
Further, the insulating end plates include a first insulating end plate and a second insulating end plate;
the battery cell assembly and the insulating end plate are conveyed to an assembly table for assembly, so that a battery module is formed, and the battery module comprises:
clamping the first insulating end plate to an assembly table;
clamping a preset number of battery cell assemblies onto the assembly table for assembly, wherein one side of a first battery cell assembly is tightly attached to a first insulation side of the first insulation end plate, and one side of the other battery cell assemblies is tightly attached to one side, far away from the first insulation end plate, of the previous battery cell assembly;
and rotating the second insulating end plate by 180 degrees, then clamping the second insulating end plate on the assembly table, and tightly attaching the second insulating side of the second insulating end plate to one side, far away from the first insulating end plate, of the last cell assembly to form the battery module.
Further, a six-axis robot is adopted, and the battery cell assembly and the insulating end plate are conveyed to an assembly table to be assembled, so that a battery module is formed.
Further, the detecting the glued battery cell includes:
identifying the glued battery cell to generate a battery cell image to be detected;
obtaining a standard cell image, and comparing the cell image to be detected with the standard cell image to obtain an image similarity;
and if the image similarity is greater than a preset threshold, obtaining a detection result that the glued battery cell is qualified in gluing.
The invention also provides a battery module which is assembled by adopting the assembly method of the battery module.
The assembly method of the battery module provided by the invention has the beneficial effects that: performing first pretreatment on the battery cell and the buffer pad on a first assembly line to obtain a battery cell assembly; performing second pretreatment on the end plate and the insulating cover on a second assembly line to obtain an insulating end plate; finally, conveying the battery cell assembly and the insulating end plate to an assembly table for assembly to form a battery module; through put electric core and cushion and carry out first preliminary treatment on first assembly line, put end plate and insulating cover on the second assembly line and carry out the second preliminary treatment, will obtain electric core subassembly and insulating end plate again at last and carry to the assembly bench and assemble, form battery module to realized the automatic equipment to battery module, solved the assembly efficiency low problem of battery module.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart illustrating an assembling method of a battery module according to an embodiment of the present invention;
fig. 2 is another flowchart of an assembling method of a battery module according to an embodiment of the present invention;
fig. 3 is another flowchart of an assembling method of a battery module according to an embodiment of the present invention;
fig. 4 is another flowchart of an assembling method of a battery module according to an embodiment of the present invention;
fig. 5 is another flowchart of an assembling method of a battery module according to an embodiment of the present invention;
fig. 6 is another flowchart of an assembling method of a battery module according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In one embodiment, as shown in fig. 1, there is provided an assembling method of a battery module, comprising the steps of:
and S10, performing first pretreatment on the battery cell and the buffer pad on a first assembly line to obtain a battery cell assembly.
The first assembly line refers to a process production line for assembling the battery cells and the buffer pads. The buffer pad is used for protecting the battery cell and preventing the battery cell from being damaged in the transportation or assembly process. The battery cell component refers to an assembly formed after the battery cells and the buffer pads are attached. In this embodiment, one cell is correspondingly attached to one buffer pad.
In a specific embodiment, a device and a station for preprocessing the battery cell and the buffer are arranged on the first assembly line, wherein the device and the station are used for preprocessing the battery cell and the buffer, such as a tray, a roller line, a triaxial platform, a triaxial feeding position, a cleaning station, a gluing station, a detection station and a bonding station, so that the first preprocessing of the battery cell and the buffer is completed on the first assembly line, and a battery cell assembly is obtained. Wherein the tray refers to a device for placing materials (e.g., cells). The roller line refers to a transmission line that can be used to transport materials. The three-axis platform is a manipulator with three axes and is commonly used for taking and discharging materials. Specifically, the first pretreatment of the battery cell and the buffer pad includes: firstly, placing the battery cells in a tray, conveying the battery cells in the tray to a triaxial loading position by a roller wire, then clamping the battery cells positioned on the triaxial loading position by a triaxial platform to perform OCV (open circuit voltage) test, and placing the battery cells with qualified OCV test results on a cleaning station to perform plasma cleaning. After the electric core is subjected to plasma cleaning, the electric core is transplanted onto the stepping line through the triaxial platform, and the electric core flows into the gluing station along with the stepping line, so that the gluing of the electric core on the gluing station is realized. Preferably, in order to ensure the gluing effect, after the battery cell is glued, the glued battery cell is conveyed to a detection station for detection; recording a test result through a detection system; and conveying the battery cells with qualified test results to a bonding station.
Further, the three-axis platform clamps the cushion pad after feeding to the attaching station, and attaches one side of the cushion pad to one electric core positioned on the attaching station; the electric core and the cushion pad after the lamination are finished flow into a next gluing station along with the roller line, the triaxial platform drives the gluing head to glue one side, far away from the electric core, of the cushion pad after the lamination is finished, the gluing result of the cushion pad after the lamination is detected and recorded by the detection system, and therefore the first pretreatment of the electric core and the cushion pad is completed, and the electric core assembly is obtained.
It should be noted that when the triaxial platform is used for clamping the battery cells located on the triaxial loading level to perform an OCV (open circuit voltage) test, the triaxial platform can clamp a plurality of battery cells each time, and the specific number of the clamped battery cells can be specifically set according to the battery capacity required by a customer. The more cells are clamped at a time, the higher the beat, but the higher the equipment cost, and conversely the lower the beat. For example: if the battery capacity required by the customer is 24PPM, namely an average of 2.5s consumes one cell, the triaxial platform needs to clamp 5 cells each time.
And S20, carrying out second pretreatment on the end plate and the insulating cover on a second assembly line to obtain the insulating end plate.
Wherein the second assembly line refers to a process line for assembling the end plates and the insulation cover. The insulating end plate refers to an assembly formed by attaching an end plate and an insulating cover. In this embodiment, one end plate is correspondingly attached to one insulating cover.
In a specific embodiment, a device and a station for preprocessing the end plate and the insulating cover, such as a double-layer reciprocating feeding table, a triaxial platform, a stepping line, a gluing station, a gluing machine and a laminating station, are arranged on the second assembly line, so that the second preprocessing of the end plate and the insulating cover is completed on the second assembly line, and the cell assembly is obtained. Wherein, double-deck round trip type material loading platform refers to the double-deck material loading platform that is used for placing the material. The stepping line refers to a transmission line which can be used for conveying materials.
Specifically, the second pretreatment of the end plate and the insulating cover includes: firstly, conveying the end plate and the insulating cover to a double-layer reciprocating feeding table; then, alternately clamping end plates and insulating covers which are positioned on the double-layer reciprocating feeding table to different two stepping lines by adopting a triaxial platform; the two stepping lines alternately move, so that the end plate and the insulating cover are conveyed to the gluing station, and the end plate and the insulating cover on the gluing station are alternately glued by adopting a gluing machine. Preferably, in order to ensure the gluing effect, after the end plate and the insulating cover are alternately glued, the end plate and the insulating cover after the alternate gluing are conveyed to a detection station for alternate detection; and recording the test result by the detection system. And finally, conveying the end plates and the insulating covers which are alternately detected to a conveying and laminating station for lamination, namely laminating one side of the insulating covers on one side of the end plates, so as to finish second pretreatment on the end plates and the insulating covers and obtain the insulating end plates.
It should be noted that, when the battery core and the buffer pad are placed on the first assembly line to perform the first pretreatment, the end plate and the insulating cover can be placed on the second assembly line to perform the second pretreatment, that is, the first assembly line and the second assembly line can operate simultaneously, thereby improving the production efficiency.
And S30, conveying the battery cell assembly and the insulating end plate to an assembly table for assembly to form the battery module.
Specifically, the first pretreatment of the battery cell and the buffer pad is completed on a first assembly line to obtain a battery cell assembly, the second pretreatment of the end plate and the insulating cover is completed on a second assembly line to obtain an insulating end plate, the battery cell assembly and the insulating end plate are conveyed to an assembly table by adopting a conveying mechanism or a clamping mechanism, and the battery cell assembly and the insulating end plate are assembled according to a preset assembly process to form the battery module. In this embodiment, the battery module is assembled by using two insulating end plates and at least one cell assembly, that is, the insulating end plates include a first insulating end plate and a second insulating end plate.
Specifically, assembling the cell assembly and the insulating end plate includes: clamping a first insulating end plate to an assembly table; then clamping a preset number of battery cell assemblies onto an assembly table for assembly, wherein one side of a first battery cell assembly is tightly attached to a first insulating side of a first insulating end plate, and one side of the other battery cell assemblies is tightly attached to one side, far away from the first insulating end plate, of the previous battery cell assembly; and finally, rotating the second insulating end plate by 180 degrees, clamping the second insulating end plate on an assembly table, and tightly attaching the second insulating side of the second insulating end plate to one side, far away from the first insulating end plate, of the last cell assembly, so that the assembly of the cell assembly and the insulating end plate is completed, and a battery module is formed.
In the embodiment, on a first assembly line, performing first pretreatment on the battery cell and the buffer pad to obtain a battery cell assembly; performing second pretreatment on the end plate and the insulating cover on a second assembly line to obtain an insulating end plate; conveying the battery cell assembly and the insulating end plate to an assembly table for assembly to form a battery module; through put electric core and cushion and carry out first preliminary treatment on first assembly line, put end plate and insulating cover on the second assembly line and carry out the second preliminary treatment, will obtain electric core subassembly and insulating end plate again at last and carry to the assembly bench and assemble, form battery module to realized the automatic equipment to battery module, solved the assembly efficiency low problem of battery module.
In one embodiment, as shown in FIG. 2, the first assembly line includes: the device comprises a cleaning station, a first glue spreader and a first attaching station;
on a first assembly line, performing first pretreatment on the battery cell and the buffer pad to obtain a battery cell assembly, wherein the method specifically comprises the following steps of:
s101: and conveying the battery cell to a cleaning station for plasma cleaning.
The cleaning station refers to a station for performing plasma cleaning on the battery cell, and in this embodiment, a plasma cleaning machine is arranged on the cleaning station, and when the battery cell is conveyed to the cleaning station, the battery cell can be directly cleaned by adopting the plasma cleaning machine. In the step, the plasma cleaning of the battery cell is performed to ensure the cleanliness of the battery cell subjected to subsequent gluing, so that the failure of gluing caused by the adhesion of other impurities on the battery cell is prevented.
S102: and adopting a first glue spreader to glue the battery cell after plasma cleaning.
Specifically, after plasma cleaning is performed on the battery cells, the battery cells after plasma cleaning are transplanted onto the stepping lines through the triaxial platform, the battery cells after plasma cleaning flow into the first gluing station along with the stepping lines, and then the battery cells after plasma cleaning are glued by adopting a first gluing machine on the first gluing station. In this embodiment, the single-sided glue is applied to the battery cell after plasma cleaning, and the glue is not applied to the other side.
S103: and conveying the buffer cushion and the glued battery cell to a first lamination station for lamination to obtain a buffer battery cell, wherein the buffer battery cell comprises a buffer side.
Specifically, the battery cell after the rubber coating is accomplished flows into on the first laminating station along with the line of marking time, then adopts the cushion centre gripping after the manual feeding to on the first laminating station to laminate the cushion with the battery cell core, on the one side that the battery cell was glued is laminated to one side that will cushion, thereby obtain the buffering battery cell. The buffer cell includes a buffer side and a cell side. The buffer side refers to the side, away from the battery core, of the buffer pad in the buffer battery core. The cell side refers to the side of the cell in the buffer cell that is away from the buffer pad.
S104: and gluing the buffer side of the buffer battery cell to obtain the battery cell assembly.
Specifically, the buffer battery core after the lamination is completed flows into the next gluing station along with the stepping line, and the triaxial platform drives the gluing head to carry out single-sided gluing on the buffer side of the buffer battery core, so that a battery core assembly is obtained.
In the embodiment, the battery cell is conveyed to a cleaning station for plasma cleaning; the battery cell after plasma cleaning is glued by adopting a first glue spreader; conveying the buffer cushion and the glued battery cell to the first lamination station for lamination to obtain a buffer battery cell, wherein the buffer battery cell comprises a buffer side; gluing the buffer side of the buffer battery cell to obtain a battery cell assembly; a series of process treatment processes for the battery cell and the buffer pad can be completed on one assembly line, so that the production efficiency of the battery cell assembly is improved while the quality of the generated battery cell assembly is ensured.
In one embodiment, as shown in fig. 3, on the first assembly line, the first pretreatment is performed on the battery cell and the buffer pad, so as to obtain a battery cell assembly, and at least one of the following is included:
s105: the cells prior to plasma cleaning were subjected to OCV testing.
Specifically, in order to ensure the quality of the battery module to be produced later, in this embodiment, before the battery cells are plasma-cleaned, OCV (open circuit voltage) test is performed on the battery cells before the plasma cleaning. Optionally, the battery cell before plasma cleaning is subjected to OCV test, and the internal resistance and the voltage of the battery cell can be tested by using a battery tester, so as to determine whether the internal resistance and the voltage of the battery cell meet preset requirements. If the internal resistance and the voltage of the battery cell are tested to meet the preset requirements, judging the battery cell as a qualified battery cell, and flowing the qualified battery cell into a next cleaning station along with a stepping line to perform the next plasma cleaning operation. If the internal resistance or the voltage of the battery core is not in accordance with the preset requirement, the battery is judged to be a disqualified battery, and the disqualified battery core is placed back into the tray and does not flow into the next station to carry out the next operation, so that the phenomenon that the quality of the battery core of the produced battery module is disqualified is avoided.
S106: and detecting the glued battery cell.
Specifically, after gluing the battery cell, in order to ensure the gluing effect, the battery cell with unqualified gluing is prevented from flowing into the next station, the lamination failure is caused in the lamination process with the buffer cushion, and in the step, the detection equipment is adopted to detect the battery cell after gluing, namely, whether the gluing effect of the battery cell after gluing meets the requirement.
In this embodiment, a CCD system is used to detect the glued battery cell. Firstly, a qualified image of cell gluing, namely a standard cell image, is prestored in a CCD system; when detecting the glued battery cell, the CCD system can adopt a camera to photograph the glued battery cell to obtain a battery cell image to be detected, then the obtained battery cell image to be detected is compared with a pre-stored standard battery cell image, if the similarity between the battery cell image to be detected and the pre-stored standard battery cell image is larger than a preset threshold value, the glued battery cell gluing effect meets the requirement, and the battery cell can flow into a next station to carry out next laminating operation. If the similarity between the to-be-detected cell image and the pre-stored standard cell image is smaller than or equal to a preset threshold value, the gluing effect of the glued cell is not satisfied, and the cell cannot flow into a next station to perform the next laminating operation. It can be understood that if the gluing track of the battery cell in the battery cell image to be detected is uniform, and the situations of glue breaking, wire drawing and the like are avoided, the gluing effect of the battery cell is good, otherwise, the gluing effect is bad.
S107: and detecting the buffer side of the glued buffer battery core.
Specifically, after the buffer side of the buffer battery core is coated with the glue, in order to ensure the glue coating effect, the phenomenon that the obtained battery core component is unqualified in glue coating is prevented, and in the step, the buffer side of the buffer battery core after the glue coating is detected by adopting detection equipment, namely, whether the glue coating effect of the buffer side of the buffer battery core after the glue coating meets the requirement is detected.
The specific method and process for detecting the buffer side of the glued buffer battery cell in this step are similar to the specific method and process for detecting the glued battery cell in step S106, and redundant description is not made here.
It can be understood that if the glue spreading effect of the buffer side of the glued buffer battery core is detected to meet the requirement, the buffer battery core is used as a battery core assembly to be assembled with the buffer end plate to form a battery module, and if the glue spreading effect of the buffer side of the glued buffer battery core is detected to not meet the requirement, the buffer battery core is used as an unqualified buffer battery core to be recovered and does not flow into the next station to be assembled.
In this embodiment, OCV testing is performed on the cells prior to plasma cleaning; detecting the glued battery cell; detecting the buffer side of the glued buffer battery core; therefore, the production efficiency of the battery cell assembly is ensured, and the quality of the battery cell assembly is further improved.
In one embodiment, as shown in FIG. 4, the second assembly line includes: the device comprises a double-layer reciprocating type feeding table, a triaxial platform, a first pedal line, a second gumming machine and a second attaching station;
and on a second assembly line, carrying out second pretreatment on the end plate and the insulating cover to obtain an insulating end plate, wherein the method specifically comprises the following steps of:
and S201, conveying the end plate and the insulating cover to a double-layer reciprocating type feeding table.
Wherein, the double-layer round trip type feeding table is used for placing the end plate and the insulating cover. Specifically, the end plate and the insulating cover can be conveyed to the double-layer reciprocating type feeding table through the conveying mechanism, and the end plate and the insulating cover can also be directly placed on the double-layer reciprocating type feeding table by manpower.
And S202, alternately clamping the end plate and the insulating cover from the double-layer reciprocating type feeding table by the three-axis platform, wherein the end plate is clamped onto the first stepping line from the double-layer reciprocating type feeding table by the three-axis platform, and the insulating cover is clamped onto the second stepping line from the double-layer reciprocating type feeding table by the three-axis platform.
Specifically, the triaxial platform is from double-deck back and forth formula loading table top clamping end plate and insulating boot in turn, wherein, triaxial platform is with the end plate centre gripping from double-deck back and forth formula loading table top to first on marking time, and triaxial platform is with insulating boot centre gripping from double-deck back and forth formula loading table top to second on marking time. The triaxial platform alternatively clamps the end plate and the insulating cover, namely the triaxial platform clamps the end plate to the first stepping line and then clamps the insulating cover to the second stepping line. Preferably, in this embodiment, the triaxial platform may sequentially cycle by clamping five end plates onto the first stepping line at a time and then clamping five insulating covers onto the second stepping line, so as to realize the alternate clamping of the end plates and the insulating covers. In this step, the triaxial platform further improves clamping efficiency by alternately clamping the end plates and the insulating cover.
And S203, alternately gluing the end plate on the first pedal wire and the insulating cover on the second pedal wire by adopting a second gluing machine.
Specifically, after the end plate is clamped onto the first stepping line from the double-layer reciprocating feeding table and the insulating cover is clamped onto the second stepping line from the double-layer reciprocating feeding table by the triaxial platform, the end plate flows into the second gluing station along with the first stepping line, the insulating cover flows into the second gluing station along with the second stepping line, the second gluing station is provided with a corresponding second gluing machine, and the second gluing machine can realize alternating gluing of the end plate on the first stepping line and the insulating cover on the second stepping line. It should be noted that, the second glue spreader is used to glue the end plate on the first pedal wire and the insulating cover on the second pedal wire alternately, so that the single-sided glue is also applied to the end plate and the insulating cover, that is, only one side of the end plate and the insulating cover is glued, and the other side is not glued.
Specifically, the second glue spreader alternately gluing the end plate on the first pedal wire and the insulating cover on the second pedal wire includes: the first stepping line moves to the second gluing station, the gluing machine is used for gluing the end plate on the first stepping line, the second stepping line is used for moving and feeding at the moment, after the end plate on the first stepping line is glued, the second stepping line just moves to the second gluing station, and the gluing machine can be used for gluing the insulating cover on the second stepping line at the moment; or, the second line of marking time moves to the second on the rubber coating station earlier, and the spreading machine carries out the rubber coating to the insulating boot on the second line of marking time earlier, and first line of marking time is moving the pay-off this moment, and after the insulating boot rubber coating on the waiting second line of marking time was accomplished, first line of marking time just moves to the second on the rubber coating station, and the spreading machine can go to carry out the rubber coating for the end plate on the first line of marking time this moment.
In the step, the end plate on the first pedal wire and the insulating cover on the second pedal wire are subjected to alternate gluing, so that the gluing of the end plate and the insulating cover can be completed simultaneously through one gluing machine, and the equipment cost is reduced.
And S204, attaching the end plate after the gluing and the insulating cover after the gluing to obtain the insulating end plate.
Specifically, the end plate flows into the second attaching station along with the first stepping line after being coated with the glue at the second gluing station, and the insulating cover flows into the second attaching station along with the second stepping line after being coated with the glue; and then the insulating cover after the gluing is attached to the end plate after the gluing by a triaxial platform, so that the insulating end plate is obtained. The bonding of the end plate after the coating and the insulating cover after the coating means bonding the surface of the insulating cover, which is not coated with the coating, to the surface of the end plate, which is coated with the coating.
In the embodiment, the end plate and the insulating cover are conveyed to the double-layer reciprocating feeding table; the triaxial platform clamps the end plate and the insulating cover alternately from the double-layer reciprocating type feeding table, wherein the triaxial platform clamps the end plate onto the first stepping line from the double-layer reciprocating type feeding table, and the triaxial platform clamps the insulating cover onto the second stepping line from the double-layer reciprocating type feeding table; alternately gluing the end plate on the first pedal wire and the insulating cover on the second pedal wire by adopting a second gluing machine; and attaching the end plate after the gluing and the insulating cover after the gluing to obtain the insulating end plate, and alternately clamping and alternately gluing the end plate and the insulating cover to further improve the production efficiency of the insulating end plate.
In an embodiment, on the second assembly line, the end plate and the insulating cover are subjected to a second pretreatment to obtain an insulating end plate, and the method specifically includes the following steps:
the end plates after the glue application and the insulating covers after the glue application are alternately tested.
Specifically, after the end plate and the insulating cover are subjected to alternating gluing, in order to ensure the gluing effect, the gluing failure caused by the gluing problem in the gluing process of the end plate and the insulating cover is prevented, or the phenomenon that the gluing of the obtained insulating end plate is unqualified is prevented, and in the step, the end plate after the gluing and the insulating cover after the gluing are alternately detected by adopting detection equipment. Preferably, the detection device is a CCD system.
Specifically, the detecting device alternately detects the end plate after the gluing and the insulating cover after the gluing, including: the detection equipment detects the end plate with the glue coated, and then detects the insulating cover with the glue coated; or the detection equipment detects the insulating cover with the glue coated, and then detects the end plate with the glue coated, and sequentially and circularly and alternately detects the end plate.
The specific method and process for alternately detecting the end plate after the glue coating and the insulating cover after the glue coating in this step are similar to the specific method and process for detecting the electrical core after the glue coating in step S106, and redundant description is not made here.
In the step, the end plate after gluing and the insulating cover after gluing are alternately detected, so that the end plate and the insulating cover can be detected simultaneously by one detection device, and the device cost is reduced.
In one embodiment, the first tread line and the second tread line alternate.
Specifically, the second stepping wire is used for carrying out gluing on the end plate to the second gluing station and alternately moves in the process of carrying out gluing on the insulating cover to the second gluing station, so that the gluing machine is ensured to realize the alternate gluing on the end plate on the first pedal wire and the insulating cover on the second pedal wire. The gluing machine can glue the end plate on the first pedal wire and then glue the insulating cover on the second pedal wire; alternatively, the glue spreader may glue the insulation cover on the second pedal wire first, and then glue the end plate on the first pedal wire; therefore, the gluing of the end plate and the insulating cover can be completed simultaneously through one gluing machine, and the equipment cost is reduced.
In one embodiment, as shown in fig. 5, the insulating end plates include a first insulating end plate and a second insulating end plate;
carry electric core subassembly and insulating end plate to the assembly bench on assemble, form battery module, include:
s301, clamping the first insulating end plate to the assembly table.
The assembly table is used for assembling the battery cell assembly and the insulating end plate. Specifically, two insulating end plates are required to form one battery module, and therefore, in this embodiment, the insulating end plates include a first insulating end plate and a second insulating end plate. In this step, the first insulating end plate is clamped to the mounting table using a clamping mechanism. Preferably, the gripping mechanism is a six-axis robot.
S302, clamping a preset number of battery cell assemblies onto an assembly table for assembly, wherein one side of a first battery cell assembly is tightly attached to a first insulation side of a first insulation end plate, and one side of the other battery cell assemblies is tightly attached to one side, far away from the first insulation end plate, of the previous battery cell assembly.
Wherein the first insulating side of the first insulating end plate refers to the side of the insulating cover in the first insulating end plate that is remote from the end plate. Specifically, a preset number of battery cell assemblies are clamped to an assembly table by a clamping mechanism for assembly, wherein one side of a first battery cell assembly is tightly attached to a first insulation side of a first insulation end plate, and one side of the other battery cell assemblies is tightly attached to one side, far away from the first insulation end plate, of a previous battery cell assembly. It will be appreciated that two adjacent cell assemblies are in close proximity to each other, with one side of the first cell assembly being in close proximity to the first insulating side of the first insulating end plate. The number of the battery cell components can be set in a self-defined manner according to actual conditions.
And S303, rotating the second insulating end plate by 180 degrees, clamping the second insulating end plate on the assembly table, and tightly attaching the second insulating side of the second insulating end plate to one side, far away from the first insulating end plate, of the last cell assembly to form the battery module.
Wherein the second insulating side of the second insulating end plate refers to the side of the insulating cover in the second insulating end plate that is remote from the end plate. Specifically, after the first insulating end plate and the preset number of cell assemblies are assembled, a clamping mechanism is adopted to rotate the second insulating end plate by 180 degrees and then clamp the second insulating end plate to an assembly table, and the second insulating side of the second insulating end plate is tightly attached to one side, far away from the first insulating end plate, of the last cell assembly; thus, the assembly of the battery cell assembly and the insulating end is completed, and the battery module is formed.
In this embodiment, the first insulating end plate is clamped to the mounting table; clamping a preset number of battery cell assemblies onto an assembly table for assembly, wherein one side of a first battery cell assembly is tightly attached to a first insulating side of a first insulating end plate, and one side of the other battery cell assemblies is tightly attached to one side, far away from the first insulating end plate, of the previous battery cell assembly; the second insulating end plate is clamped onto the assembly table after being rotated for 180 degrees, and the second insulating side of the second insulating end plate is tightly attached to one side, far away from the first insulating end plate, of the last cell assembly to form a battery module; thereby further improving the production efficiency of the battery module.
In one embodiment, a six-axis robot is used to transport the cell assembly and the insulating end plate to an assembly station for assembly to form a battery module.
In the step, a six-axis robot is adopted to convey the battery cell assembly and the insulating end plate to an assembly table for assembly. Because six robots are the manipulator that has six axles, consequently, when carrying electric core subassembly and insulating end plate to the assembly bench on assemble, six robots can simultaneously centre gripping a plurality of electric core subassemblies and a plurality of insulating end to and carry out the assembly of a plurality of electric core subassemblies and a plurality of insulating end simultaneously, thereby further improve the assembly efficiency of electric core subassembly and insulating end plate.
In one embodiment, as shown in fig. 6, the detecting the glued battery cell includes:
s1061: and identifying the glued battery cells to generate a battery cell image to be detected.
The to-be-detected battery cell image refers to an image generated after the battery cell subjected to gluing is identified. In the step, the glued battery cells are identified, and the glued battery cells are photographed by adopting a camera in a detection system, so that a battery cell image to be detected is generated. Preferably, the detection system is a CCD system. It should be noted that, in this embodiment, the glue spreading effect of the glued battery cell is to be detected, so that the glue spreading surface of the battery cell needs to be accurately identified in the process of identifying the glued battery cell, so as to prevent the generated glue spreading surface of the battery cell to be detected from being unclear or unclear.
S1062: and acquiring a standard cell image, and comparing the cell image to be detected with the standard cell image to obtain the image similarity.
The standard cell image refers to a standard image which is stored in the detection system in advance and is qualified in cell gluing. The gluing track of the battery cell in the standard battery cell image is uniform, and the situations of glue breaking, wire drawing and the like are avoided. The image similarity is the similarity value between the reference cell image and the standard cell image. Specifically, after the cell image to be detected is generated, the cell image to be detected is compared with the standard cell image, so that the image similarity is obtained. Optionally, an image similarity algorithm may be used to calculate the image similarity of the cell image to be detected and the standard cell image. For example: SIFT algorithm.
S1063: if the image similarity is larger than a preset threshold value, the detection result is that the glued battery cell is qualified in gluing.
The preset threshold value refers to a preset value for evaluating whether the battery cell in the battery cell image to be detected is glued or not. For example: the preset threshold value can be 90%, 95% or 97%, etc., and the user can customize the setting according to the actual situation. Specifically, after the image similarity is obtained, comparing the image similarity with a preset threshold, and if the image similarity is larger than the preset threshold, obtaining a detection result that the glued battery cell is qualified in gluing. If the image similarity is smaller than or equal to a preset threshold value, the detection result is that the glued battery cell is unqualified in gluing.
In the embodiment, identifying the glued battery cell to generate a battery cell image to be detected; obtaining a standard cell image, and comparing the cell image to be detected with the standard cell image to obtain an image similarity; if the image similarity is larger than a preset threshold value, the battery cell after the gluing is qualified in the detection result; thereby improving the accuracy of the detection result.
In one embodiment, a battery module is provided, which is assembled by the assembly method of the battery module.
In this embodiment, the battery module is a square-case battery module including 12 cells, 12 cushions, 2 insulating covers, and 2 end plates. Wherein, an insulating cover corresponds laminating installation an end plate, and a electricity core corresponds laminating installation blotter.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. A method of assembling a battery module, comprising:
performing first pretreatment on the battery cell and the buffer pad on a first assembly line to obtain a battery cell assembly;
performing second pretreatment on the end plate and the insulating cover on a second assembly line to obtain an insulating end plate;
conveying the battery cell assembly and the insulating end plate to an assembly table for assembly to form a battery module;
the first assembly line comprises a cleaning station, a first glue spreader and a first laminating station;
and on the first assembly line, performing first pretreatment on the battery cell and the buffer pad to obtain a battery cell assembly, wherein the battery cell assembly comprises:
conveying the battery cell to the cleaning station for plasma cleaning;
the first glue spreader is adopted to spread glue on the battery cell after plasma cleaning;
conveying the buffer cushion and the glued battery cell to the first bonding station for bonding to obtain a buffer battery cell, wherein the buffer battery cell comprises a buffer side;
gluing the buffer side of the buffer battery cell to obtain a battery cell assembly;
the second assembly line comprises a first stepping line, a second stepping line and a second gumming machine;
and on the second assembly line, performing second pretreatment on the end plate and the insulating cover to obtain an insulating end plate, wherein the second pretreatment comprises the following steps:
alternately gluing the end plate on the first stepping line and the insulating cover on the second stepping line by adopting the second gluing machine;
and attaching the end plate after the gluing and the insulating cover after the gluing to obtain the insulating end plate.
2. The method for assembling a battery module according to claim 1, wherein the battery cell and the buffer pad are subjected to a first pretreatment on the first assembly line to obtain the battery cell assembly, further comprising at least one of:
performing OCV test on the battery cell before plasma cleaning;
detecting the glued battery cell;
and detecting the buffer side of the glued buffer battery core.
3. The assembling method of the battery module according to claim 1, wherein the second assembly line includes: the device comprises a double-layer reciprocating type feeding table, a triaxial platform and a second laminating station;
and performing a second pretreatment on the end plate and the insulating cover on a second assembly line to obtain an insulating end plate, wherein the second pretreatment comprises the following steps:
conveying the end plate and the insulating cover to the double-layer reciprocating feeding table;
the triaxial platform alternately clamps the end plate and the insulating cover from the double-layer reciprocating type feeding table, wherein the triaxial platform clamps the end plate onto the first stepping line from the double-layer reciprocating type feeding table, and clamps the insulating cover onto the second stepping line from the double-layer reciprocating type feeding table;
the end plate flows into the second attaching station along with the first stepping line after being coated with the glue, and the insulating cover flows into the second attaching station along with the second stepping line after being coated with the glue.
4. The method for assembling a battery module according to claim 3, wherein the second pretreatment is performed on the end plate and the insulating cover on the second assembly line to obtain an insulating end plate, further comprising:
and alternately detecting the end plate after the gluing and the insulating cover after the gluing.
5. The method of assembling a battery module according to claim 3, wherein the first tread line and the second tread line alternately move.
6. The method of assembling a battery module according to claim 1, wherein the insulating end plates include a first insulating end plate and a second insulating end plate;
the battery cell assembly and the insulating end plate are conveyed to an assembly table for assembly, so that a battery module is formed, and the battery module comprises:
clamping the first insulating end plate to an assembly table;
clamping a preset number of battery cell assemblies onto the assembly table for assembly, wherein one side of a first battery cell assembly is tightly attached to a first insulation side of the first insulation end plate, and one side of the other battery cell assemblies is tightly attached to one side, far away from the first insulation end plate, of the previous battery cell assembly;
and rotating the second insulating end plate by 180 degrees, then clamping the second insulating end plate on the assembly table, and tightly attaching the second insulating side of the second insulating end plate to one side, far away from the first insulating end plate, of the last cell assembly to form the battery module.
7. The method for assembling a battery module according to claim 1, wherein the battery module is formed by transferring the battery cell assembly and the insulating end plate to an assembling table for assembling by using a six-axis robot.
8. The method for assembling a battery module according to claim 2, wherein the detecting the glued battery cells comprises:
identifying the glued battery cell to generate a battery cell image to be detected;
obtaining a standard cell image, and comparing the cell image to be detected with the standard cell image to obtain an image similarity;
and if the image similarity is greater than a preset threshold, obtaining a detection result that the glued battery cell is qualified in gluing.
9. A battery module, characterized in that it is assembled by the assembly method of the battery module according to any one of claims 1 to 8.
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