CN116435579A - Battery module production line and production method - Google Patents
Battery module production line and production method Download PDFInfo
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- CN116435579A CN116435579A CN202310699885.8A CN202310699885A CN116435579A CN 116435579 A CN116435579 A CN 116435579A CN 202310699885 A CN202310699885 A CN 202310699885A CN 116435579 A CN116435579 A CN 116435579A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 91
- 238000005303 weighing Methods 0.000 claims abstract description 138
- 230000005540 biological transmission Effects 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims description 32
- 238000003466 welding Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 description 22
- 238000012546 transfer Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/62—Over or under weighing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The application provides a battery module production line and a production method. The production line comprises a weighing station, wherein the weighing station comprises a lifting device, a transmission rail, a weighing platform and a first robot, and the lifting device is in transmission connection with the transmission rail or the weighing platform so that the transmission rail can move up and down relative to the weighing platform; the transmission rail is used for transporting the tray provided with the battery module, and the transmission rail and the weighing platform are arranged up and down in the vertical direction so that the tray can move to the upper side of the weighing platform and can be transferred to the weighing platform by moving downwards relative to the weighing platform through the transmission rail; the first robot is used for grabbing the battery module on the tray borne on the weighing platform. Adopt the production line that above-mentioned technical scheme provided, the accessible adds the tray to the battery module in proper order to and the tray weighs, and can calculate the weight that obtains the battery module according to the difference of twice weigh around, realizes the online weighing of battery module.
Description
Technical Field
The application relates to the technical field of battery production, in particular to a battery module production line and a production method.
Background
The current battery module production process comprises a plurality of working procedures, and the production beats among the working procedures are inconsistent, so that the problems of quick part of working procedure beats and slow part of working procedure beats exist, namely, the production beats of different working procedures in the production line are unbalanced, so that the overall beats of the production line are influenced, and the production efficiency is influenced.
For example, in the existing module production process, the weighing process of the battery module includes: the battery module is transferred to the off-line for weighing, and then the battery module is transferred to the on-line. The existing process of weighing the battery module is complicated, and the production beat is slow.
Disclosure of Invention
The utility model aims to provide a battery module production line and production method for realize the online weighing of battery module, with raise the efficiency, accelerate the takt time of weighing station.
Embodiments of the present application are implemented as follows:
in a first aspect, an embodiment of the present application provides a battery module production line, including a weighing station, where the weighing station includes a lifting device, a transmission rail, a weighing platform, and a first robot, where the lifting device is in transmission connection with the transmission rail or the weighing platform, so that the transmission rail can move up and down relative to the weighing platform; the transmission rail is used for transporting the tray provided with the battery module, and the transmission rail and the weighing platform are arranged up and down in the vertical direction so that the tray can move to the upper side of the weighing platform and can be transferred to the weighing platform by moving downwards relative to the weighing platform through the transmission rail; the first robot is used for grabbing the battery module on the tray borne on the weighing platform.
Among the above-mentioned technical scheme, because the transmission track can be for weighing platform downward movement for the tray that bears battery module can be placed and weigh on weighing platform, because the battery module on the tray can be snatched to first robot, after snatching battery module, weighing platform can weigh the tray alone, can calculate the weight that obtains battery module through the difference of twice weighing around, realizes that battery module's online weighing, has improved production efficiency greatly, has accelerated the takt of weighing station.
With reference to the first aspect, in some embodiments, the weighing station further includes a frame, and the lifting device, the weighing platform, and the transfer rail are disposed on the frame.
In combination with the first aspect, in some embodiments, the lifting device includes a drive member mounting bracket and a drive member mounted to the drive member mounting bracket, the drive member mounting bracket is fixedly connected to the frame, and the drive member is drivingly connected to the transfer rail so that the transfer rail can move downward to transfer a tray located on the transfer rail to the weighing platform.
In the technical scheme, the lifting device is in transmission connection with the transmission rail, so that the lifting device can drive the transmission rail to move up and down, and further, the tray on the transmission rail is placed on the weighing platform.
With reference to the first aspect, in some embodiments, the battery module production line further includes a pretreatment line and a module line, where the pretreatment line is used to provide a battery core for the module line, and the module line is used to form a battery module by using the battery core provided by the pretreatment line; the module line corresponds to the pretreatment lines;
the battery cells are assembled into a battery module after sequentially passing through the pretreatment line and the module line, and the weighing station is positioned on the module line.
In the above technical scheme, because the module line corresponds in many pretreatment lines, consequently, can provide more electric core for the module line simultaneously to the pile up the process of piling up the electric core into the group battery in the acceleration module line, accelerated production beat, improved production efficiency.
With reference to the first aspect, in some embodiments, the number of pretreatment lines is twice the number of module lines; the pretreatment line is connected with a feeding station, and the feeding station comprises a feeding device, a feeding roller way, two feeding ports and a second robot;
the feeding device is used for placing the battery cell on a feeding roller way, and the feeding roller way is connected with the feeding port and is configured to be capable of conveying the battery cell to the feeding port; the second robot is used for transferring the battery cores of the two feeding holes to the pretreatment line.
Among the above-mentioned technical scheme, every material loading station has two feed inlets, can provide the electric core to the pretreatment line more high-efficient, improves the beat of material loading, and then improves production efficiency.
With reference to the first aspect, in some embodiments, the modular line includes a modular stacking station that is located before the weighing station; the module stacking station is provided with a stacking table, and the stacking table is provided with a tray and a positioning platform for positioning the tray; the tray is provided with a positioning pin hole, and the positioning platform is provided with a positioning pin which can be matched with the positioning pin hole; the positioning platform is configured to move upwards so that the positioning pin is matched with the positioning pin hole; a third robot is arranged between the module line and the pretreatment line and is used for transferring the battery cells on the pretreatment line to the tray so that a plurality of battery cells form a battery pack at the module stacking station.
Adopt positioning platform to fix a position the tray at stacking table, can guarantee the precision of tray and electric core relative position for the process of piling up the electric core into group battery can be realized on the module line, promptly, can realize the online stacking of electric core, improved production efficiency.
With reference to the first aspect, in some embodiments, the number of stacking stations is twice the number of pretreatment lines, one pretreatment line for each two stacking stations.
Through two stacking tables of corresponding setting of every pretreatment line, two stacking tables can participate in the stacking process of electric core in turn, avoid leading to stacking group battery on the platform and can not in time shift to next process because of the beat on the module line is slower than the beat on the pretreatment line, and then lead to the production beat of pretreatment line by the problem of influence.
With reference to the first aspect, in some embodiments, the module line further includes a buffer station, the buffer station being a next station to the module stacking station, the buffer station being configured to be capable of accommodating at least 8 trays provided by the module stacking station with the mounted battery cells.
Through setting up the buffering station, can effectively avoid the process that the beat is slow to the process that the beat is fast to cause the influence, does not influence the whole beat of production line.
In combination with the first aspect, in some embodiments, the module wire further comprises a busbar welding station located between the module stacking station and the weighing station, the busbar welding station comprising oppositely disposed first and second welding devices configured to weld a busbar electrically connected to the battery pack from both sides of the battery pack.
According to the technical scheme, the first welding device and the second welding device are adopted at the busbar welding station to weld the busbars at the two sides of the battery pack, so that the busbars at the two sides of the battery pack can be welded at the same time, and the production efficiency is improved.
In a second aspect, an embodiment of the present application provides a method for producing a battery module, implemented by using the battery module production line provided in the first aspect, where the method includes:
the method comprises the steps that a tray carrying a battery module is conveyed to the upper side of a weighing platform through a conveying track, then the conveying track moves downwards relative to the weighing platform through a lifting device, the tray is positioned on the weighing platform to carry out first weighing, and data obtained by the first weighing are the total weight of the battery module and the tray;
separating the battery module from the tray by adopting a first robot, and weighing for the second time by using a weighing platform, wherein the data obtained by the second weighing is the weight of the tray; and calculating the weight of the battery module by the difference value of the data obtained by the first weighing and the second weighing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a weigh station provided in an embodiment of the present application;
fig. 2 is an installation schematic diagram of a weighing platform and a lifting device according to an embodiment of the present application;
FIG. 3 is a schematic top view of a weigh station provided in an embodiment of the present application;
fig. 4 is a schematic diagram of a battery module production line according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a feeding station provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a stacking station according to an embodiment of the present application.
Icon: 100-frames; 110-lifting device; 120-transmission tracks; 121-a conveying roller; 130-a weighing platform; 200-trays; 210-locating pin holes; 300-pretreatment line; 350-a third robot; 400-module line; 510-an electric core; 520-battery module; 610-stacking station; 620-fourth robot.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The inventor of the present application finds that in the existing production process of the battery module 520, in the process of weighing the battery module 520, the adopted production mode is mainly that the battery module 520 on the production line is transferred to the weighing platform 130 under the line to weigh through the mechanical arm, and then the battery module 520 is transferred to the line through the mechanical arm after the weighing is completed, in this process, the battery module 520 needs to be grabbed twice through the mechanical arm, the weighing process is complicated, and the efficiency is low.
Based on this, the application provides a battery module production line and a production method for improving the efficiency of the process of weighing the battery module 520 and accelerating the production beat of the weighing station.
The battery module production line provided by the application comprises a weighing station, as shown in fig. 1, wherein the weighing station comprises a lifting device 110, a transmission rail 120, a weighing platform 130 and a first robot. The lifting device 110 is in transmission connection with the transmission rail 120 or the weighing platform 130, so that the transmission rail 120 can move up and down relative to the weighing platform 130; the transfer rail 120 is used for transporting the tray 200 mounted with the battery module 520, the transfer rail 120 and the weighing platform 130 are vertically arranged up and down so that the tray 200 can move above the weighing platform 130, and the tray 200 can be transferred to the weighing platform 130 by the downward movement of the transfer rail 120 relative to the weighing platform 130; the first robot is used to grasp the battery module 520 on the tray 200 carried on the weighing platform 130.
Correspondingly, the present application also provides a production method for measuring the weight of the battery module 520 by adopting the production line, which comprises the steps of conveying the tray 200 carrying the battery module 520 to the upper side of the weighing platform 130 through the conveying rail 120, then moving the conveying rail 120 downwards relative to the weighing platform 130 through the lifting device 110, and positioning the tray 200 on the weighing platform 130 for the first time, wherein the data obtained by the first time weighing is the total weight of the battery module 520 and the tray 200; the first robot is adopted to separate the battery module 520 from the tray 200, and the weighing platform 130 performs secondary weighing, and the data obtained by the secondary weighing is the weight of the tray 200; the weight of the battery module 520 is calculated by the difference between the data obtained by the first weighing and the second weighing. After the weight of the battery module 520 is calculated, the battery module 520 may be placed at a predetermined position according to whether the weight of the battery module 520 satisfies the requirements.
Adopt above-mentioned technical scheme of this application to provide production line and production method, at the in-process of weighing to battery module 520, only need adopt first robot to carry out once to press from both sides to get battery module 520 and can accomplish the work of weighing to battery module 520, and then improve the efficiency of weighing to battery module 520 for the production beat of station department of weighing.
In addition, when the secondary weighing is performed, the weight of the tray 200 can be measured only by separating the battery module 520 from the tray 200, so that the weight of the battery module 520 is obtained and whether the weight of the battery module 520 is qualified is judged. It will be understood by those skilled in the art that in the present application, after the first manipulator grabs the battery module 520, the battery module 520 can be directly transferred to the preset position. In the conventional process of grabbing the battery module 520 off-line for weighing, and then grabbing the battery module 520 again for placement at a preset position according to the weighed weight, the mechanical arm needs to complete a displacement stroke for transferring the battery module 520 from the production line to the weighing position, and a stroke for transferring the battery module 520 from the weighing position to the preset position after the weight of the battery module 520 is obtained. The preset positions include a position for placing the battery module 520 with qualified weight and a position for placing the battery module 520 with unqualified weight, and the preset positions may be located on the production line or may be located outside the production line; the preset position can be set according to actual conditions by a person skilled in the art.
That is, in the production method for weighing the battery module 520 provided by the application, besides the efficiency can be improved by reducing the number of times of grabbing the battery module 520, the production beat of the weighing station can be accelerated by reducing the displacement stroke of the first robot, and the efficiency is improved.
Accordingly, in some embodiments of the battery module production line, the battery module production line further includes a control module in signal connection with the weighing platform 130 and the first robot average. The control module stores the weight range of the qualified battery module 520, and can receive the weight measured by the weighing platform 130 in the first weighing and the second weighing processes, calculate the weight of the battery module 520, and further judge whether the battery module 520 grabbed by the first robot is qualified or not by judging whether the calculated weight of the battery module 520 is within the weight range of the qualified battery module 520, and give a corresponding instruction to the first robot, so that the first robot places the battery module 520 at a corresponding preset position. Because the time of weighing and the time period of calculation and judgment of the control module, the process can be understood as that the first robot directly places the first robot to the preset position after grabbing the battery module 520 from the weighing station, so that the displacement stroke of the first robot is reduced, and the efficiency is improved.
In the above embodiment, the first robot may use an existing mechanical arm or other existing devices capable of grabbing and transferring the battery module 520; the weighing platform 130 may be a tray 200 for placing an object to be weighed in an existing electronic scale, or may be a tray 200 for placing an object to be weighed in other devices capable of weighing objects.
Further, in some embodiments of the battery module production line, as shown in fig. 2, the weighing station further includes a frame 100, and the lifting device 110, the weighing platform 130, and the transmission rail 120 (not shown) are all disposed on the frame 100; the lifting device 110 is in transmission connection with the transmission rail 120. In the above technical solution, the lifting device 110 and the weighing platform 130 are both disposed on the frame 100, and the lifting device 110 is in transmission connection with the transmission rail 120, so that the transmission rail 120 moves downward through the lifting device 110, and the tray 200 carried on the transmission rail 120 can be placed on the weighing platform 130 for weighing. Preferably, in the above embodiment, the transfer rail 120 is slidably connected to the frame 100, so that the transfer rail 120 is lifted.
In other embodiments of the battery module production line, the lifting device 110 may be in transmission connection with the weighing platform 130, and the lifting device 110 may enable the weighing platform 130 to move upwards to enable the tray 200 borne on the transmission rail 120 to be lifted up by the weighing platform 130, so as to weigh the tray 200.
In some embodiments of the battery module production line, the lifting device 110 includes a driving member mounting frame and a driving member mounted on the driving member mounting frame, the driving member mounting frame is fixedly connected with the frame 100, and the driving member is in transmission connection with the transmission rail 120, so that the transmission rail 120 can move downwards, and the tray 200 located on the transmission rail 120 is transferred to the weighing platform 130. In other embodiments, the lifting device 110 may not include a driving member mounting frame, and the driving member may be directly connected to the frame 100, so long as the driving transmission rail 120 can move up and down. Further, the driving member may be an existing driving member such as a cylinder or a hydraulic cylinder.
In the present application, the transfer rail 120 is used to transfer the pallet 200, and the form of the transfer rail 120 is not particularly limited, as long as the pallet 200 can be disposed on the weighing platform 130 by moving the transfer rail 120 downward relative to the weighing platform 130. In some embodiments, the transfer rail 120 may be a conveyor belt that supports and conveys the tray 200 from both sides of the direction of movement of the tray 200, with the weighing platform 130 positioned between the conveyor belts on both sides. In other embodiments, as shown in fig. 3, the conveying track 120 may be a conveying chain or a conveying roller 121 that supports and conveys the tray 200 from both sides in the moving direction of the tray 200, and the weighing platform 130 is located between the conveying belt or the conveying roller 121 at both sides.
The inventor of the application also finds that in the existing battery module production line, the production efficiency is low due to the problems of unreasonable production line layout, inconsistent production beats of different procedures, low automation degree and the like.
Based on this, in some embodiments of the battery module production line provided in the present application, as shown in fig. 4, the battery module production line further includes a pre-processing line 300 and a module line 400, where the pre-processing line 300 is used to provide the module line 400 with the battery cells 510, and the module line 400 is used to combine the battery cells 510 provided by the pre-processing line 300 into the battery module 520; the module line 400 corresponds to the plurality of pretreatment lines 300; the battery cell 510 is assembled into a battery module 520 after passing through the pretreatment line 300 and the module line 400 in sequence. It should be understood by those skilled in the art that the weighing stations provided herein are located on the modular line 400; in the module wire 400, the battery module 520 is obtained by stacking the battery cells 510 into a battery pack, welding the bus bars to the sides of the battery pack, and mounting the end plates and the side plates around the battery pack.
It should be understood by those skilled in the art that the battery module 520 includes a plurality of battery cells 510, and thus, the process of providing the battery cells 510 to the module line 400 by the preprocessing line 300 affects the production efficiency of the battery module 520. In the above technical solution, by making the module wire 400 correspond to a plurality of pretreatment wires 300, the module wire 400 can quickly obtain the required number of electric cores 510, thereby improving the production efficiency of the production line. Preferably, each module line 400 corresponds to two pretreatment lines 300, so that the pretreatment lines 300 can provide the battery cells 510 for the module lines 400 rapidly, and the situation that the production beats of the module lines 400 are relatively slow due to the too fast beats of the battery cells 510 provided by the pretreatment lines 300 can be avoided. In the present application, the number of the module wires 400 is not limited, and the module wires 400 may be one or a plurality of.
Further, in some embodiments of the battery module production line, the pretreatment line 300 is connected with a feeding station, and the feeding station comprises a feeding device, a feeding roller way, two feeding ports and a second robot; the feeding device is used for placing the battery cell 510 on a feeding roller way, and the feeding roller way is connected with the feeding port and is configured to be capable of conveying the battery cell 510 to the feeding port; the second robot is used for transferring the battery cells 510 of the two feeding ports to the pretreatment line 300.
In the above technical solution, each pretreatment line 300 has two corresponding feed inlets, and can continuously transfer the battery cell 510 to the pretreatment line 300, after the battery cell 510 at one feed inlet is used, the battery cell 510 can be provided for the pretreatment line 300 from another feed inlet, so that interruption is avoided, and the production process is more continuous.
Specifically, in some embodiments, the feeding device includes an AGV guiding trolley, the feeding roller is used to convey the material frames with the battery cells 510 to each feeding port sequentially, and when the battery cells 510 in the material frames at one feeding port position are used up, the second robot can provide the battery cells 510 for the pretreatment line 300 from the material frames at another feeding port position. Referring to fig. 5, an arrow on the right side of the second robot in the drawing indicates a circulation direction of a material frame, wherein a full material frame is a material frame filled with the battery cell 510, and an empty material frame is a material frame not filled with the battery cell 510.
Further, in some embodiments of the battery module production line, as shown in fig. 6, the module line 400 includes a module stacking station located before the weighing station; the module stacking station is provided with a stacking table 610, and the stacking table 610 is provided with a tray 200 and a positioning platform for positioning the tray 200; the tray 200 is provided with a positioning pin hole 210, and the positioning platform is provided with a positioning pin capable of being matched with the positioning pin hole 210. The positioning platform is located below the tray 200, so that the positioning platform can enable the positioning pins to be matched with the positioning pin holes 210 through upward movement, and further positioning of the tray 200 is achieved. A third robot 350 is disposed between the module line 400 and the pretreatment line 300, and the third robot 350 is configured to transfer the battery cells 510 on the pretreatment line 300 to the tray 200, so that the battery cells 510 form a battery pack at a module stacking station.
In the above embodiment, since the stacking table 610 is provided with the positioning platform for positioning the tray 200, the tray 200 is fixed in position while being located at the stacking table 610; in the process of grabbing and placing the battery cell 510 from the pretreatment line 300 to the tray 200 by adopting the third robot 350, the position accuracy of the battery cell 510 on the tray 200 can be improved, so that the subsequent operation of installing the bus bar on the battery cell 510 and arranging the end plate and the side plate around the battery cell 510 is facilitated. By adopting the battery module production line provided by the embodiment, as the position accuracy of the tray 200 is ensured, the battery cells 510 can be stacked into the battery pack on the module line 400, and compared with the production mode that the battery pack is arranged on the module line 400 after the battery cells 510 are stacked into the battery pack on line in the existing embodiments, the battery module production line provided by the embodiment can be used for completing the stacking process of the battery cells 510 on the module line 400, so that the grabbing times of the battery cells 510 can be reduced, the production beat of stacking stations can be accelerated, and the production efficiency of the battery module 520 can be improved.
Further, in some embodiments of the battery module production line, the number of the stacking stages 610 is twice the number of the pretreatment lines 300, and each two stacking stages 610 corresponds to one pretreatment line 300. Through two stacking tables 610 corresponding to each pretreatment line 300, the two stacking tables 610 can participate in the stacking process of the battery cells 510 in a rotation manner, so that the problem that the production beat of the pretreatment line 300 is influenced because the battery pack on the stacking table 610 cannot be transferred to the next process in time due to the fact that the beat of the module line 400 is slower than that of the pretreatment line 300 can be avoided.
Further, in some embodiments of the battery module production line, the module line 400 further includes a buffer station, which is a next station of the module stacking station, and the tray 200 on the stacking table 610 and the battery pack located on the tray 200 are transferred to the buffer station by the fourth robot 620. It should be understood by those skilled in the art that the buffer station should be located between the weighing station and the stacking station. The buffer station is configured to accommodate at least 8 trays 200 with mounted battery cells 510 provided by the module stacking station. In the above embodiment, since the buffer station can accommodate at least 8 trays 200 with the battery cells 510 mounted thereon, when the beat located at the rear of the buffer station is slow, the tray 200, i.e., the battery pack carried by the tray, can be temporarily stored in the buffer station; when the takt behind the buffer station is slower, a certain amount of battery packs are placed in the buffer station for the subsequent stations to use, and due to the existence of the buffer station, an operator can know the relative speed of the takt of the process before and after the buffer station by observing the quantity change of the trays 200 in the buffer station, so that the takt of the related process is adjusted, and enough time can be provided for adjusting the takt through setting the buffer station.
Further, in some embodiments of the battery module production line, the module line 400 further includes a busbar welding station located between the module stacking station and the weighing station, the busbar welding station including a first welding device and a second welding device disposed opposite each other, the first welding device and the second welding device configured to weld a busbar electrically connected to the battery pack from both sides of the battery pack. The bus bars are welded from both sides of the battery pack simultaneously through the first welding device and the second welding device to improve the production efficiency of the battery module 520. Further, a welding station may be disposed between the caching station and the weighing station.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. The battery module production line is characterized by comprising a weighing station, wherein the weighing station comprises a lifting device, a transmission rail, a weighing platform and a first robot, and the lifting device is in transmission connection with the transmission rail or the weighing platform so that the transmission rail can move up and down relative to the weighing platform;
the conveying rail is used for conveying a tray provided with a battery module, and is arranged up and down with the weighing platform in the vertical direction, so that the tray can move above the weighing platform and can be transferred to the weighing platform by moving downwards relative to the weighing platform through the conveying rail;
the first robot is used for grabbing a battery module on a tray borne on the weighing platform.
2. The battery module production line of claim 1, wherein the weighing station further comprises a frame, and the lifting device, the weighing platform and the transmission rail are all disposed on the frame.
3. The battery module production line according to claim 2, wherein the lifting device comprises a driving member mounting frame and a driving member mounted on the driving member mounting frame, the driving member mounting frame is fixedly connected with the frame, and the driving member is in transmission connection with the transmission rail so that the transmission rail can move downwards, and a tray on the transmission rail is transferred to the weighing platform.
4. The battery module production line according to any one of claims 1 to 3, further comprising a pretreatment line and a module line, wherein the pretreatment line is used for providing a battery cell for the module line, and the module line is used for forming a battery module by adopting the battery cell provided by the pretreatment line; the module line corresponds to a plurality of pretreatment lines;
the battery cells are assembled into a battery module after sequentially passing through the pretreatment line and the module line, and the weighing station is positioned on the module line.
5. The battery module production line according to claim 4, wherein the number of the pretreatment lines is twice as large as that of the module lines; the pretreatment line is connected with a feeding station, and the feeding station comprises a feeding device, a feeding roller way, two feeding ports and a second robot;
the feeding device is used for placing the battery cell on the feeding roller way, and the feeding roller way is used for connecting the feeding port and is configured to be capable of conveying the battery cell to the feeding port; the second robot is used for transferring the electric cores of the two feeding holes to the pretreatment line.
6. The battery module production line of claim 4, wherein the module line comprises a module stacking station, the module stacking station being located before the weighing station; the module stacking station is provided with a stacking table, and the stacking table is provided with a tray and a positioning platform for positioning the tray; the tray is provided with a positioning pin hole, and the positioning platform is provided with a positioning pin which can be matched with the positioning pin hole; the positioning platform is configured to move upwards so that the positioning pin is matched with the positioning pin hole;
and a third robot is arranged between the module line and the pretreatment line and is used for transferring the battery cells on the pretreatment line to the tray so that a plurality of battery cells form a battery pack at the module stacking station.
7. The battery module production line according to claim 6, wherein the number of the stacking stations is twice the number of the pretreatment lines, one for each two of the stacking stations.
8. The battery module production line of claim 7, further comprising a buffer station that is the next station of the module stacking station, the buffer station configured to accommodate at least 8 trays provided by the module stacking station with mounted battery cells.
9. The battery module production line of claim 6, further comprising a buss bar welding station located between the module stacking station and the weighing station, the buss bar welding station comprising oppositely disposed first and second welding devices configured to weld buss bars electrically connected to the battery pack from both sides of the battery pack.
10. A method for producing a battery module, characterized in that the production line of the battery module according to any one of claims 1 to 9 is adopted; the production method comprises the following steps:
the method comprises the steps that a tray carrying a battery module is conveyed to the position above a weighing platform through a conveying track, then the conveying track moves downwards relative to the weighing platform through a lifting device, the tray is positioned on the weighing platform to carry out first weighing, and data obtained by the first weighing are the total weight of the battery module and the tray;
the first robot is adopted to separate the battery module from the tray, the weighing platform is used for carrying out second weighing, and data obtained by the second weighing are the weight of the tray; and calculating the weight of the battery module through the difference value of the data obtained by the first weighing and the second weighing.
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| CN202310699885.8A CN116435579A (en) | 2023-06-14 | 2023-06-14 | Battery module production line and production method |
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