CN113054232A - Battery module assembly method and battery module - Google Patents

Battery module assembly method and battery module Download PDF

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Publication number
CN113054232A
CN113054232A CN201911377414.5A CN201911377414A CN113054232A CN 113054232 A CN113054232 A CN 113054232A CN 201911377414 A CN201911377414 A CN 201911377414A CN 113054232 A CN113054232 A CN 113054232A
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China
Prior art keywords
end plate
assembly
insulating
battery module
battery cell
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Granted
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CN201911377414.5A
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Chinese (zh)
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CN113054232B (en
Inventor
吴小飞
张嵩
张甫
苟建文
董建伟
高云松
黄祥虎
高云峰
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Shenzhen Han's Lithium Battery Intelligent Equipment Co ltd
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Han s Laser Technology Industry Group Co Ltd
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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Primary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses an assembling method of a battery module and the battery module, wherein a battery core assembly is obtained by performing first pretreatment on a battery core and a buffer pad on a first assembling line; on a second assembly line, carrying out second pretreatment on the end plate and the insulating cover to obtain an insulating end plate; finally, conveying the battery pack assembly and the insulating end plate to an assembly table for assembly to form a battery module; through when putting electric core and cushion and carrying out first preliminary treatment on first assembly line, put end plate and insulating boot and carry out the second preliminary treatment on the second assembly line, will obtain electric core subassembly and insulating end plate at last and assemble on carrying to the assembly bench again, form the battery module to realized the automatic equipment to the battery module, solved the assembly efficiency low problem of battery module.

Description

Battery module assembly method and battery module
Technical Field
The present invention relates to the field of battery technologies, and in particular, to an assembly method of a battery module and a battery module.
Background
With the continuous development of society and the continuous progress of science and technology, mechanized, automatic and standardized production gradually becomes a development trend, and gradually replaces the traditional manual labor, and new power is injected for the sustainable development of enterprises. Therefore, battery manufacturers also need to develop mechanical automation equipment to replace the traditional manual labor by means of conversion and upgrading. However, at present, when assembling the battery, a worker usually performs plasma cleaning and gluing on the battery core; then, the workers set a welding process step on a computer, and the batteries are welded into groups by means of laser welding, resistance welding and the like; the battery module has the advantages of more labor participation, extremely low production efficiency, serious insufficient capacity and unsuitability for accurate and efficient automatic production in the production of the existing battery module.
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 a method for assembling a battery module, including:
on a first assembly line, carrying out first pretreatment on the battery cell and the buffer pad to obtain a battery cell assembly;
on a second assembly line, carrying out second pretreatment on the end plate and the insulating cover to obtain an insulating end plate;
and conveying the electric core assembly and the insulating end plate to an assembly table for assembly to form a battery module.
Further, the first assembly line comprises: cleaning station, first glue coatingMachine for workingAnd a first laminating station;
on a first assembly line, carry out first preliminary treatment to electric core and cushion, obtain electric core subassembly, include:
conveying the battery cell to the cleaning station for plasma cleaning;
applying the first coatingMachine pairGluing the battery cell after plasma cleaning;
conveying the cushion pad and the battery cell after being coated with the glue to the first laminating station for laminating to obtain a buffer battery cell, wherein the buffer battery cell comprises a buffer side;
and gluing the buffering side of the buffering battery cell to obtain a battery cell assembly.
Further, on a first assembly line, the battery core and the buffer pad are subjected to a first pretreatment to obtain a battery core assembly, and the method further comprises at least one of the following steps:
performing an OCV test on the battery cell before plasma cleaning;
detecting the battery cell after the glue is coated;
and detecting the buffering side of the buffering battery cell after gluing.
Further, the second assembly line comprises: the double-layer reciprocating type feeding platform, the three-axis platform, the first pedal line, the second glue spreader and the second laminating station are arranged;
on the second assembly line, carry out the second preliminary treatment to end plate and insulating boot, obtain insulating end plate, include:
conveying the end plate and the insulating cover to the double-layer reciprocating type 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 from the double-layer reciprocating type feeding table to the first stepping line, and clamps the insulating cover from the double-layer reciprocating type feeding table to the second stepping line;
alternately gluing the end plates on the first pedal line and the insulation covers on the second pedal line by using the second gluing machine;
and attaching the end plate after gluing and the insulating cover after gluing to obtain the insulating end plate.
Further, on the second assembly line, carry out the second preliminary treatment to end plate and insulating boot, obtain insulating end plate, still include:
and alternately detecting the end plate after gluing and the insulating cover after gluing.
Further, the first tread line and the second tread line are alternately moved.
Further, the insulating end plates comprise a first insulating end plate and a second insulating end plate;
will the electricity core subassembly with insulating end plate carries to assemble to the mount table on, forms the battery module, includes:
clamping the first insulating end plate to an assembly table;
clamping a preset number of electric core assemblies to the assembling table for assembling, wherein one side of a first electric core assembly is tightly attached to the first insulating side of the first insulating end plate, and one side of the rest electric core assemblies is tightly attached to one side, far away from the first insulating end plate, of the last electric core assembly;
and rotating the second insulating end plate by 180 degrees, clamping the second insulating end plate to the assembly table, and tightly attaching the second insulating side of the second insulating end plate to the last electric core assembly to keep away from one side of the first insulating end plate to form a battery module.
Further, adopt six robots, will the battery pack with insulating end plate carries to assemble to the mount table, forms battery module.
Further, the detecting the battery cell after the glue coating includes:
identifying the battery cell after being coated with the glue to generate a battery cell image to be detected;
acquiring a standard cell image, and comparing the cell image to be detected with the standard cell image to obtain image similarity;
and if the image similarity is greater than a preset threshold value, obtaining a detection result that the battery core subjected to gluing is qualified.
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: on a first assembly line, carrying out first pretreatment on the battery cell and the buffer pad to obtain a battery cell assembly; on a second assembly line, carrying out second pretreatment on the end plate and the insulating cover to obtain an insulating end plate; finally, conveying the battery pack assembly and the insulating end plate to an assembly table for assembly to form a battery module; through when putting electric core and cushion and carrying out first preliminary treatment on first assembly line, put end plate and insulating boot and carry out the second preliminary treatment on the second assembly line, will obtain electric core subassembly and insulating end plate at last and assemble on carrying to the assembly bench again, form the battery module to realized the automatic equipment to the 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 needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
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 assembly method of a battery module according to an embodiment of the present invention;
fig. 3 is another flowchart of an assembly method of a battery module according to an embodiment of the present invention;
fig. 4 is another flowchart of an assembly method of a battery module according to an embodiment of the present invention;
fig. 5 is another flowchart of an assembly method of a battery module according to an embodiment of the present invention;
fig. 6 is another flowchart of an assembly method of a battery module according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In one embodiment, as shown in fig. 1, there is provided an assembling method of a battery module, including 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 cell and the buffer cushion. The buffer cushion is used for protecting the battery cell and preventing the battery cell from being damaged in the transportation or assembly process. The battery core assembly refers to a combined piece formed by attaching the battery core and the buffer pad. In this embodiment, one battery cell is correspondingly attached to one buffer pad.
In a specific embodiment, a tray, a roller line, a three-axis platform, a three-axis loading position, a cleaning station, a gluing station, a detection station, a fitting station and other devices and stations for preprocessing the battery cell and the buffer are arranged on the first assembly line, so that the first preprocessing of the battery cell and the buffer is completed on the first assembly line, and the battery cell assembly is obtained. The tray refers to a device for placing materials (such as battery cells). A roller line refers to a transport 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 placing materials. Specifically, the first pretreatment of the battery cell and the buffer pad includes: firstly, placing the battery cell in a tray, conveying the battery cell in the tray to a triaxial loading position by a roller line, then clamping the battery cell positioned on the triaxial loading position by a triaxial platform to perform an OCV (open circuit voltage) test, and placing the battery cell with a qualified OCV test result on a cleaning station to perform plasma cleaning. After the battery cell is cleaned by plasma, the battery cell is transplanted to the mark time line by the triaxial platform, and the battery cell flows into the gluing station along the mark time line, so that the gluing of the battery cell 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 qualified battery cell to a fitting station.
Further, the three-axis platform clamps the fed cushion pad to the fitting station, and one side of the cushion pad is fitted to one battery cell on the fitting station; the battery core and the cushion pad after the lamination are fed into the next gluing station along with the roller line, the three-axis platform drives the gluing head to carry out single-side gluing on one side, away from the battery core, of the cushion pad after the lamination is completed, and then the gluing result of the cushion pad after the lamination is completed is detected and recorded by the detection system, so that the first pretreatment of the battery core and the cushion pad is completed, and the battery core assembly is obtained.
It should be noted that, when the electrical core on the triaxial feeding level is clamped by the triaxial platform to perform OCV (open circuit voltage) test, the triaxial platform can clamp a plurality of electrical cores at a time, and the specific number of the clamped electrical cores can be specifically set according to the battery capacity required by a client. The more cells are clamped at a time, the higher the beat, but the higher the equipment cost, and the lower the beat. For example: if the battery capacity required by the client is 24PPM, that is, one cell is consumed in 2.5s on average, the three-axis platform needs to clamp 5 cells each time.
And S20, performing 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 plate and the insulating cover. The insulating end plate refers to a combined piece formed by attaching the end plate and the insulating cover. In this embodiment, one end plate is attached to one insulating cover.
In a specific embodiment, the second assembly line is provided with devices and stations for preprocessing the end plates and the insulating covers, such as a double-layer reciprocating feeding table, a three-axis platform, a stepping line, a gluing station, a gluing machine and a fitting station, so that second preprocessing of the end plates and the insulating covers is completed on the second assembly line, and the electric core assembly is obtained. Wherein, the double-layer reciprocating type feeding platform refers to a double-layer feeding platform used for placing materials. A tread line refers to a transfer line that can be used to transport 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 the end plates and the insulating covers on the double-layer reciprocating feeding table to two different step lines by adopting a three-axis platform; and the two stepping lines move alternately so as to convey the end plates and the insulating covers to the gluing station, and the end plates and the insulating covers positioned on the gluing station are glued alternately by a gluing machine. Preferably, in order to ensure the gluing effect, after the end plates and the insulating covers are alternately glued, the alternately glued end plates and the alternately glued insulating covers are conveyed to a detection station for alternate detection; and recording the test result through the detection system. And finally, conveying the end plate and the insulating cover which are alternately detected to a conveying and laminating station for laminating, namely laminating one side of the insulating cover to one side of the end plate, thereby finishing second pretreatment on the end plate and the insulating cover and obtaining the insulating end plate.
It should be noted that, while the cell and the cushion pad are placed on the first assembly line for the first pretreatment, the end plate and the insulating cover may be placed on the second assembly line for the second pretreatment, that is, the first assembly line and the second assembly line may operate simultaneously, thereby improving the production efficiency.
And S30, conveying the battery pack assembly and the insulating end plate to an assembly table for assembly to form the battery module.
Specifically, first pretreatment of the battery core and the buffer pad is completed on a first assembly line to obtain a battery core assembly, second pretreatment of the end plate and the insulating cover is completed on a second assembly line, after the insulating end plate is obtained, the battery core assembly and the insulating end plate are conveyed to an assembly table by adopting a conveying mechanism or a clamping mechanism, and the battery core assembly and the insulating end plate are assembled according to a preset assembly process to form the battery module. It should be noted that, in this embodiment, two insulating end plates and at least one core assembly are used for assembly in order to form the battery module, that is, the insulating end plates include a first insulating end plate and a second insulating end plate.
Specifically, assembling the electrical core assembly and the insulating end plate includes: clamping a first insulating end plate on an assembly table; then clamping a preset number of electric core assemblies to an assembly table for assembly, wherein one side of a first electric core assembly is tightly attached to the first insulation side of the first insulation end plate, and one side of the rest electric core assemblies is tightly attached to one side of the last electric core assembly, which is far away from the first insulation end plate; and finally, the second insulating end plate is clamped to the assembly table after rotating 180 degrees, and the second insulating side of the second insulating end plate is attached to one side, away from the first insulating end plate, of the last electric core assembly, so that the electric core assembly and the insulating end plate are assembled to form the battery module.
In this embodiment, on a first assembly line, a first pretreatment is performed on a battery cell and a buffer pad to obtain a battery cell assembly; on a second assembly line, carrying out second pretreatment on the end plate and the insulating cover to obtain an insulating end plate; conveying the battery core assembly and the insulating end plate to an assembly table for assembly to form a battery module; through when putting electric core and cushion and carrying out first preliminary treatment on first assembly line, put end plate and insulating boot and carry out the second preliminary treatment on the second assembly line, will obtain electric core subassembly and insulating end plate at last and assemble on carrying to the assembly bench again, form the battery module to realized the automatic equipment to the battery module, solved the assembly efficiency low problem of battery module.
In an embodiment, as shown in fig. 2, the first assembly line comprises: the glue coating device comprises a cleaning station, a first glue coating machine and a first laminating station;
on a first assembly line, carry out first preliminary treatment to electric core and cushion, obtain electric core subassembly, specifically include the following step:
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, so that when the battery cell is conveyed to the cleaning station, the battery cell can be directly cleaned by the plasma cleaning machine. In this step, carry out plasma cleaning to electric core is in order to guarantee the clean degree of follow-up gluey electric core of carrying on, prevents to have other impurity because of being attached to on the electric core, and leads to the failure of rubber coating.
S102: and gluing the battery cell after the plasma cleaning by adopting a first gluing machine.
Specifically, after plasma cleaning is carried out on the battery cell, the battery cell after plasma cleaning is transplanted to a stepping line through a three-axis platform, the battery cell after plasma cleaning flows into a first gluing station along the stepping line, and then a first gluing machine on the first gluing station is adopted to glue the battery cell after plasma cleaning. It should be noted that, in this embodiment, single-side gluing is performed on the battery cell after the plasma cleaning, and gluing is not performed on the other side.
S103: carry the battery cell after blotter and rubber coating to laminate on the first laminating station, obtain buffering battery cell, buffering battery cell is including buffering side.
Specifically, on the electric core after the rubber coating was accomplished flowed into first laminating station along with the line of marking time, then adopt the blotter centre gripping after the triaxial platform will artifical material loading to first laminating station on to laminate blotter and electric core, laminate one side that is about to the blotter to electric core and carry out on one side that the rubber coating had been carried out to one side, thereby obtain buffering electric core. The buffer cell includes a buffer side and a cell side. Wherein, the buffering side refers to the side of keeping away from the electricity core of blotter in the buffering electricity core. The battery cell side refers to one side of the battery cell in the buffer battery cell, which is far away from the buffer pad.
S104: and gluing the buffering side of the buffering battery cell to obtain the battery cell assembly.
Specifically, after the lamination is completed, the buffering battery cell flows into the next gluing station along with the stepping line, and the three-axis platform drives the gluing head to glue the buffering side of the buffering battery cell on a single surface, so that the battery cell assembly is obtained.
In the embodiment, the battery cell is conveyed to a cleaning station for plasma cleaning; gluing the battery cell after the plasma cleaning by adopting a first gluing machine; conveying the cushion pad and the battery cell after the glue coating to the first laminating station for laminating to obtain a buffer battery cell, wherein the buffer battery cell comprises a buffer side; gluing the buffering side of the buffering electric core to obtain an electric core assembly; a series of process treatment processes of the battery cell and the buffer pad can be completed on one assembly line, so that the quality of the generated battery cell assembly is guaranteed, and meanwhile, the production efficiency of the battery cell assembly is improved.
In one embodiment, as shown in fig. 3, the cell and the cushion pad are subjected to a first pretreatment on a first assembly line to obtain a cell assembly, further comprising at least one of:
s105: the OCV test was performed on the cells before plasma cleaning.
Specifically, in order to ensure the quality of the battery module produced subsequently, in this embodiment, before the cell is subjected to plasma cleaning, an OCV (open circuit voltage) test is performed on the cell before the plasma cleaning. Optionally, the OCV test performed on the electric core before the plasma cleaning may use a battery tester to test the internal resistance and the voltage of the electric core, so as to determine whether the internal resistance and the voltage of the electric core meet preset requirements. And if the internal resistance and the voltage of the battery cell obtained through testing meet the preset requirements, judging that the battery cell is a qualified battery cell, and enabling the qualified battery cell to flow into the next cleaning station along with the stepping line to perform the next plasma cleaning operation. If the internal resistance or the voltage of the battery cell obtained by the test does not meet the preset requirement, the battery is judged to be an unqualified battery, the unqualified battery cell is placed back to the tray, and the unqualified battery cell does not flow into the next station for the next operation, so that the phenomenon that the quality of the battery cell of the produced battery module is unqualified is avoided.
S106: and detecting the battery cell after the glue is coated.
Specifically, after carrying out the rubber coating to electric core, in order to guarantee the rubber coated effect, prevent that the unqualified electric core of rubber coating from flowing into next station, lead to the laminating failure at the in-process of laminating with the cushion, in this step, adopt check out test set to detect the electric core after the rubber coating, whether the rubber coating effect of detecting the electric core after the rubber coating satisfies the demands promptly.
In this embodiment, a CCD system is used to detect the glued electric core. Firstly, a qualified battery cell gluing image, namely a standard battery cell image, is pre-stored in a CCD system; when detecting the battery cell after gluing, the CCD system can adopt the camera to shoot the battery cell after gluing to obtain and wait to detect the battery cell image, then will obtain wait to detect battery cell image and prestore standard battery cell image and carry out the comparison, if wait to detect battery cell image and prestore standard battery cell image similarity and be greater than the predetermined threshold value, then show that the rubber coating effect of the battery cell after the rubber coating satisfies the requirement, can flow into the station and carry out laminating operation on next step. If the similarity between the battery cell image to be detected and the prestored standard battery cell image is smaller than or equal to the preset threshold value, the gluing effect of the glued battery cell does not meet the requirement, and the glued battery cell cannot flow into a next station to perform the next laminating operation. Understandably, if the gluing track of the battery cell in the battery cell image to be detected is uniform, and the conditions such as glue breaking and wire drawing do not exist, the gluing effect of the battery cell is good, otherwise, the gluing effect is not good.
S107: and detecting the buffering side of the glued buffering battery cell.
Specifically, after carrying out the rubber coating to the buffering side of buffering electric core, in order to guarantee the rubber coated effect, prevent that the unqualified phenomenon of rubber coating from appearing in the electric core subassembly that obtains, in this step, adopt check out test set to detect the buffering side of the buffering electric core after the rubber coating, whether the rubber coating effect of the buffering side of the buffering electric core after detecting the rubber coating satisfies the demands promptly.
The specific method and process for detecting the buffer side of the buffer battery cell after being coated with the adhesive in this step are similar to the specific method and process for detecting the battery cell after being coated with the adhesive in step S106, and redundant description is omitted here.
The battery module comprises a battery core assembly, a buffer end plate, a buffer battery core, a detection module and a battery module, wherein the buffer battery core assembly comprises a buffer side and a buffer end plate, the buffer side is arranged on the buffer end plate, the detection module is arranged on the buffer end plate, the buffer battery core is arranged on the buffer end plate, the detection module is arranged on the buffer end plate, and the buffer battery core is arranged on the buffer end plate.
In this embodiment, the OCV test was performed on the cell before the plasma cleaning; detecting the battery cell after the glue is coated; detecting the buffering side of the glued buffering battery cell; thereby when guaranteeing the production efficiency of electric core subassembly, further improved the quality of electric core subassembly.
In an embodiment, as shown in fig. 4, the second assembly line comprises: the double-layer reciprocating type feeding platform, the three-axis platform, the first pedal line, the second glue spreader and the second laminating station are arranged;
on a second assembly line, carrying out second pretreatment on the end plate and the insulating cover to obtain an insulating end plate, and specifically comprising the following steps:
and S201, conveying the end plate and the insulating cover to a double-layer reciprocating feeding table.
Wherein, the double-layer reciprocating type feeding bench is a double-layer feeding bench 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 manually and directly placed on the double-layer reciprocating type feeding table.
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 to the first stepping line from the double-layer reciprocating type feeding table by the three-axis platform, and the insulating cover is clamped to the second stepping line from the double-layer reciprocating type feeding table by the three-axis platform.
Specifically, the three-axis platform alternately clamps the end plate and the insulating cover from the double-layer reciprocating type feeding table, wherein the three-axis platform clamps the end plate to the first stepping line from the double-layer reciprocating type feeding table, and the three-axis platform clamps the insulating cover to the second stepping line from the double-layer reciprocating type feeding table. The triaxial platform alternately clamps the end plate and the insulating cover means that the triaxial platform clamps the end plate to the first stepping line firstly and then clamps the insulating cover to the second stepping line. Preferably, in this embodiment, the triaxial platform can clamp five end plates to the first stepping line at a time, and then clamp five insulation covers to the second stepping line, and cycle sequentially, so as to realize the alternate clamping of the end plates and the insulation covers. In this step, the triaxial platform further improves the clamping efficiency by alternately clamping the end plates and the insulating cover.
And S203, alternately gluing the end plates on the first pedal line and the insulation covers on the second pedal line by using a second gluing machine.
Specifically, the end plate is from double-deck reciprocal formula material loading bench centre gripping to first mark time on the line at triaxial platform to and with the insulating boot from double-deck reciprocal formula material loading bench centre gripping to the second mark time on the line after, the end plate flows into second rubber coating station along with first step line, the insulating boot flows into second rubber coating station along with the second step line, be equipped with the second spreading machine that corresponds on the second rubber coating station, the second spreading machine can realize carrying out rubber coating in turn to the end plate on the first footboard line and the insulating boot on the second footboard line. It should be noted that, the second glue applicator is used for alternately gluing the end plate on the first pedal line and the insulation cover on the second pedal line, and also for gluing the single side of the end plate and the insulation cover, that is, only gluing one side of the end plate and the insulation cover, and not gluing the other side.
Specifically, the second spreading machine carries out the rubber coating in turn to the end plate on the first footboard line and the insulating boot on the second footboard line and includes: the first stepping line moves to a second gluing station, a gluing machine glues the end plate on the first stepping line, the second stepping line feeds materials in a moving mode 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 glue the insulating cover on the second stepping line at the moment; or, the second stepping line moves to the second gluing station first, the gluing machine glues the insulating cover on the second stepping line first, the first stepping line feeds materials in a moving mode at the moment, after the gluing of the insulating cover on the second stepping line is completed, the first stepping line just moves to the second gluing station, and the gluing machine can glue the end plate on the first stepping line at the moment.
In this step, through carrying out rubber coating in turn to the end plate on the first footboard line and the insulating boot on the second footboard line to the realization can accomplish the rubber coating to end plate and insulating boot simultaneously through a spreading machine, has reduced equipment cost.
And S204, attaching the end plate after gluing to the insulating cover after gluing to obtain the insulating end plate.
Specifically, the end plate flows into the second laminating station along with the first stepping line after being glued at the second gluing station, and the insulating cover flows into the second laminating station along with the second stepping line after being glued; and then attaching the insulated cover after gluing to the end plate after gluing by using a three-axis platform, thereby obtaining the insulated end plate. The step of bonding the end plate after the glue application and the insulating cover after the glue application means that the side of the insulating cover where the glue application is not performed is bonded to the side of the end plate where the glue application is performed.
In the embodiment, the end plate and the insulating cover are conveyed to the double-layer reciprocating type feeding table; the three-axis platform alternately clamps the end plate and the insulating cover from the double-layer reciprocating type feeding table, wherein the three-axis platform clamps the end plate from the double-layer reciprocating type feeding table to a first stepping line, and clamps the insulating cover from the double-layer reciprocating type feeding table to a second stepping line; alternately gluing the end plate on the first pedal line and the insulating cover on the second pedal line by using a second gluing machine; the glued end plate and the glued insulation cover are attached to obtain the insulation end plate, and the end plate and the insulation cover are alternately clamped and glued, so that the production efficiency of the insulation end plate is further improved.
In an embodiment, on a second assembly line, the second pretreatment is performed on the end plate and the insulating cover to obtain an insulating end plate, and the method further includes the following steps:
the end plates after gluing and the insulating covers after gluing are alternately inspected.
Specifically, after carrying out the rubber coating in turn to end plate and insulating boot, in order to guarantee the rubber coated effect, prevent to laminate the in-process at end plate and insulating boot and lead to the laminating failure because of the rubber coating problem, or prevent that the insulating end plate that obtains from appearing the unqualified phenomenon of rubber coating, in this step, adopt check out test set to carry out the alternative detection to the end plate after the rubber coating and to the insulating boot after the rubber coating. Preferably, the detection device is a CCD system.
Specifically, the detection device alternately detecting the end plate after gluing and the insulating cover after gluing comprises the following steps: the detection equipment detects the end plate which is coated with the glue, and then detects the insulation cover which is coated with the glue; or the detection equipment detects the glued insulating cover firstly, then detects the glued end plate, and sequentially and circularly detects alternately.
In this step, the specific method and process for alternately detecting the end plate after the glue coating and the insulating cover after the glue coating are similar to the specific method and process for detecting the battery cell after the glue coating in step S106, and redundant description is omitted here.
In this step, through carrying out the alternative detection to the end plate after the rubber coating and to the insulating boot after the rubber coating to realize accomplishing the detection to end plate and insulating boot simultaneously through a check out test set, reduced equipment cost.
In one embodiment, the first tread line and the second tread line are alternately moved.
Specifically, the second step line is carrying out the rubber coating with the end plate to the second rubber coating station and is stepping on the step line and carrying out the rubber coating with the insulating boot and carry out rubber coating in-process alternate motion to the second rubber coating station to guarantee that the spreading machine can realize carrying out the rubber coating in turn to the end plate on the first footboard line and the insulating boot on the second footboard line. Namely, the glue spreader can firstly spread the glue on the end plate on the first pedal line, and then spread the glue on the insulation cover on the second pedal line; or the glue spreader can glue the insulating cover on the second pedal line firstly, and then glue the end plate on the first pedal line; therefore, the end plates and the insulating covers can be simultaneously glued by 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 and assemble, form the battery module, include:
and S301, clamping the first insulating end plate to an assembly table.
The assembling table is a platform for assembling the electric core assembly and the insulating end plate. Specifically, two insulating end plates are required for forming one battery module, and therefore, in the present embodiment, the insulating end plates include a first insulating end plate and a second insulating end plate. In this step, a clamping mechanism is used to clamp the first insulating end plate to the mounting table. Preferably, the gripper mechanism is a six-axis robot.
S302, clamping a preset number of electric core assemblies to an assembly table for assembly, wherein one side of a first electric core assembly is tightly attached to the first insulation side of the first insulation end plate, and one side of the rest electric core assemblies is tightly attached to one side, far away from the first insulation end plate, of the last electric core assembly.
The first insulation side of the first insulation end plate refers to the side, far away from the end plate, of the insulation cover in the first insulation end plate. Specifically, adopt fixture to assemble the centre gripping of the electric core subassembly centre gripping of predetermineeing quantity to the assembly bench, wherein, the first insulating side of the first insulating end plate is pasted to one side of first electric core subassembly, and the one side of its remaining electric core subassembly is pasted and is pasted one side of keeping away from first insulating end plate of last electric core subassembly. As can be understood, two adjacent electric core assemblies are attached to each other, and one side of the first electric core assembly is attached to the first insulation side of the first insulation end plate. The number of the electric core components can be set by users according to actual conditions.
And S303, clamping the second insulating end plate onto an assembly table after rotating the second insulating end plate for 180 degrees, and attaching the second insulating side of the second insulating end plate to one side of the last electric core assembly, which is far away from the first insulating end plate, to form the battery module.
Wherein, the second insulation side of the second insulation end plate refers to the side of the insulation cover in the second insulation end plate far away from the end plate. Specifically, after the first insulating end plate and the electric core assemblies with the preset number are assembled, the second insulating end plate is rotated by 180 degrees by adopting a clamping mechanism and then clamped on an assembly table, and the second insulating side of the second insulating end plate is attached to one side, away from the first insulating end plate, of the last electric core assembly; thereby completing the assembly of the electric core assembly and the insulating terminal to form the battery module.
In the present embodiment, the first insulating end plate is clamped to the mounting table; clamping a preset number of electric core assemblies onto an assembly table for assembly, wherein one side of a first electric core assembly is tightly attached to the first insulation side of the first insulation end plate, and one side of the rest electric core assemblies is tightly attached to one side, far away from the first insulation end plate, of the last electric core assembly; rotating the second insulating end plate by 180 degrees, clamping the second insulating end plate on an assembly table, and tightly attaching a second insulating side of the second insulating end plate to one side, far away from the first insulating end plate, of the last electric core 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 convey the cell assembly and the insulating end plates to an assembly table for assembly to form the battery module.
In this step, a six-axis robot is used to transport the core assembly and the insulating end plates 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 and assemble, six robots can be a plurality of electric core subassemblies of centre gripping and a plurality of insulating end simultaneously 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 an embodiment, as shown in fig. 6, detecting the battery cell after being glued includes:
s1061: and identifying the battery cell after the glue coating to generate a battery cell image to be detected.
The to-be-detected cell image refers to an image generated after the battery cell subjected to gluing is identified. In the step, the battery cell after being coated with the glue is identified, and the battery cell after being coated with the glue is photographed by a camera in the detection system, so that an image of the battery cell to be detected is generated. Preferably, the detection system is a CCD system. It should be noted that, in this embodiment, the detection of the gluing effect is to be performed on the glued electric core, so that the glued surface of the electric core in the electric core needs to be accurately identified in the process of identifying the glued electric core, and the generated gluing surface of the electric core in the image of the electric core to be detected is prevented 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 pre-stored in the detection system and is qualified in cell gluing. Namely, the gluing track of the battery cell in the standard battery cell image is uniform, and the conditions of glue breaking, wire drawing and the like do not exist. The image similarity refers to a similarity value between the standard 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 between the to-be-detected cell image and the standard cell image. For example: SIFT algorithm.
S1063: and if the image similarity is greater than the preset threshold, obtaining a detection result that the battery core after being coated with the glue is qualified.
The preset threshold refers to a preset value for evaluating whether the battery cell in the battery cell image to be detected is qualified in gluing. For example: the preset threshold value can be 90%, 95% or 97%, and the like, and a user can set the threshold value in a self-defined mode according to actual conditions. Specifically, after the image similarity is obtained, the image similarity is compared with a preset threshold, and if the image similarity is greater than the preset threshold, the detection result is obtained that the battery core subjected to gluing is qualified. And if the image similarity is smaller than or equal to the preset threshold, obtaining a detection result that the battery core after being coated with the glue is unqualified.
In this embodiment, identifying the battery cell after being coated with the glue to generate a battery cell image to be detected; acquiring a standard cell image, and comparing the cell image to be detected with the standard cell image to obtain image similarity; if the image similarity is larger than a preset threshold value, obtaining a detection result that the battery core after being coated with the glue is qualified; thereby improving the accuracy of the detection result.
In one embodiment, a battery module is provided, which is assembled by the above assembling method of the battery module.
In this embodiment, the battery module is square-shell battery module, and this square-shell battery module includes 12 electric cores, 12 blotters, 2 insulating covers and 2 end plates. Wherein, an insulating boot corresponds end plate of laminating installation, and an electric core corresponds blotter of laminating installation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An assembling method of a battery module, comprising:
on a first assembly line, carrying out first pretreatment on the battery cell and the buffer pad to obtain a battery cell assembly;
on a second assembly line, carrying out second pretreatment on the end plate and the insulating cover to obtain an insulating end plate;
and conveying the electric core assembly and the insulating end plate to an assembly table for assembly to form a battery module.
2. The assembly method of a battery module according to claim 1, wherein the first assembly line includes: the glue coating device comprises a cleaning station, a first glue coating machine and a first laminating station;
on a first assembly line, carry out first preliminary treatment to electric core and cushion, obtain electric core subassembly, include:
conveying the battery cell to the cleaning station for plasma cleaning;
gluing the battery cell after the plasma cleaning by using the first gluing machine;
conveying the cushion pad and the battery cell after being coated with the glue to the first laminating station for laminating to obtain a buffer battery cell, wherein the buffer battery cell comprises a buffer side;
and gluing the buffering side of the buffering battery cell to obtain a battery cell assembly.
3. The method of assembling a battery module according to claim 2, wherein the first pre-processing of the cell and the buffer pad is performed on a first assembly line to obtain the cell assembly, and further comprising at least one of:
performing an OCV test on the battery cell before plasma cleaning;
detecting the battery cell after the glue is coated;
and detecting the buffering side of the buffering battery cell after gluing.
4. The assembly method of a battery module according to claim 1, wherein the second assembly line includes: the double-layer reciprocating type feeding platform, the three-axis platform, the first pedal line, the second glue spreader and the second laminating station are arranged;
on the second assembly line, carry out the second preliminary treatment to end plate and insulating boot, obtain insulating end plate, include:
conveying the end plate and the insulating cover to the double-layer reciprocating type 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 from the double-layer reciprocating type feeding table to the first stepping line, and clamps the insulating cover from the double-layer reciprocating type feeding table to the second stepping line;
alternately gluing the end plates on the first pedal line and the insulation covers on the second pedal line by using the second gluing machine;
and attaching the end plate after gluing and the insulating cover after gluing to obtain the insulating end plate.
5. The method of assembling a battery module according to claim 4, wherein the second pre-treatment of the end plates and the insulating cover is performed on a second assembly line to obtain the insulating end plates, further comprising:
and alternately detecting the end plate after gluing and the insulating cover after gluing.
6. The method of assembling a battery module according to claim 4, wherein the first step line and the second step line are alternately moved.
7. 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;
will the electricity core subassembly with insulating end plate carries to assemble to the mount table on, forms the battery module, includes:
clamping the first insulating end plate to an assembly table;
clamping a preset number of electric core assemblies to the assembling table for assembling, wherein one side of a first electric core assembly is tightly attached to the first insulating side of the first insulating end plate, and one side of the rest electric core assemblies is tightly attached to one side, far away from the first insulating end plate, of the last electric core assembly;
and rotating the second insulating end plate by 180 degrees, clamping the second insulating end plate to the assembly table, and tightly attaching the second insulating side of the second insulating end plate to the last electric core assembly to keep away from one side of the first insulating end plate to form a battery module.
8. The assembly method of a battery module according to claim 1, wherein the core assembly and the insulating end plates are transferred to an assembly table for assembly using a six-axis robot to form the battery module.
9. The assembly method of the battery module according to claim 3, wherein the detecting the battery core after the glue is applied comprises:
identifying the battery cell after being coated with the glue to generate a battery cell image to be detected;
acquiring a standard cell image, and comparing the cell image to be detected with the standard cell image to obtain image similarity;
and if the image similarity is greater than a preset threshold value, obtaining a detection result that the battery core subjected to gluing is qualified.
10. A battery module assembled by the method for assembling a battery module according to any one of claims 1 to 9.
CN201911377414.5A 2019-12-27 2019-12-27 Battery module assembly method and battery module Active CN113054232B (en)

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