KR102327501B1 - Secondary Battery Sorting System - Google Patents

Abstract

The present invention relates to a capacity sorting system for sorting produced batteries for each class classified according to the difference in capacity performance, and more specifically, a sorting operation according to a plurality of sorting devices per space occupied by the discharge trays listed by class By performing the sorting operation, it is possible to perform a faster sorting operation compared to the same facility area, and a buffer conveyor that temporarily stores the battery cells classified according to each of a plurality of sorting devices and sorting the battery cells stored in the buffer conveyor into each discharge tray. It relates to a secondary battery capacity sorting system capable of discharging battery cells according to a sorting operation of a plurality of sorting devices of each division into a single row of discharge trays using an alternating device for

Description

Secondary Battery Capacity Sorting System {Secondary Battery Sorting System}

The present invention relates to a capacity screening system for selecting a produced battery for each grade classified according to a difference in each capacity performance.

In general, each manufactured battery has a difference in capacity performance, and each manufacturer classifies the capacity of the battery into different grades.

At this time, the capacity detection operation of the circular battery is performed by a capacity detector provided in the transfer line of the battery cells that are manufactured and sequentially discharged, and the capacity is sequentially detected and each detected battery cell is sequentially placed on a 16x16 tray. By storing as , it is possible to distinguish the capacity of the battery cells stored in each position according to the tray arrangement. Here, the battery cells passing through the capacity detector are sequentially stored in the stored tray, so that a plurality of battery cells having different grades are mixed,

The battery capacity screening system refers to a facility for sorting a plurality of battery cells mixed in the tray according to each grade. In more detail, as the battery cells that have been detected are sorted according to the arrangement position in the storage tray (hereinafter referred to as the supply tray), each battery cell is sorted on each conveyor provided for each classified grade, and each The operation (Grouping) of storing the selected and stored battery cells on a conveyor of

At this time, the conventional capacity sorting system divides and transports battery cells stored in the supply tray by one sorting device to a plurality of buffer conveyors corresponding to the discharge trays listed by grade to be sorted, thereby circulating on one surface of the buffer conveyor. Each is stored separately, and when a predetermined battery cell is accumulated in each buffer conveyor, it is configured to perform a sorting operation of transporting it to the discharge tray using a transport device provided corresponding to each. Therefore, when the battery cells stored in the supply tray are selected and transported to each buffer conveyor, the interference of the robot working above the buffer conveyor and the battery cells transported through each buffer conveyor and transported by the robot In order to control without delay in operation due to interference between the battery cells, etc., only one sorting device is provided in a plurality of buffer conveyors partitioned by grade.

That is, in the conventional capacity screening system, the width of the process line increases as the number of grade criteria to be classified increases, whereas the speed of the screening operation is limited by the limitation that the screening operation must be performed using only one screening device. A problem has arisen that

Japanese Laid-Open Patent Publication No. 1998-321250 (published on Aug. 2, 1998)

The present invention has been devised to solve the above problems, and overcomes the existing limitation of having only one sorting device per space occupied by the discharge trays listed by grade, and provides a plurality of areas for sorting, buffering and storing. An object of the present invention is to provide a secondary battery capacity screening system capable of performing a sorting operation according to a plurality of sorting devices by dividing and alternating the sorted battery cells to correspond to the grades of the listed discharge trays.

In order to solve the above problems, the present invention is provided between a pair of supply belts and discharge belts arranged side by side in one direction, and a secondary battery capacity screening system for sorting battery cells supplied to the supply belt for each grade A sorting device for transporting a plurality of battery cells filled in a supply tray transported through the supply belt and sorting them by grade, and having the battery cells sorted by the sorting device available for storage according to each grade A buffer conveyor including a plurality of rails and a storage device for transporting a predetermined battery cell stored in the buffer conveyor to a discharge tray transported through the discharge belt, wherein the buffer conveyor includes one end of each rail is the supply belt and the other end is provided in a straight line to face the discharge belt, characterized in that it is arranged in plurality along the conveying direction of the supply belt and the discharge belt.

In addition, the sorting device, the buffer conveyor and the storage device are made in plurality so as to be arranged in each area separated based on the plurality of discharge trays arranged corresponding to the grade (n) to be sorted, the plurality of buffer conveyors Each of the rails having a number (n) corresponding to the grade (n) to be selected is characterized in that it is arranged.

In addition, the plurality of buffer conveyors include a first rail and a second rail on which predetermined rails having different lengths are disposed adjacent to each other, and the first rail and the second rail are made to have different lengths from each other, Among the plurality of buffer conveyors disposed in the separated area, the first rail with a short length of one of the buffer conveyors to the second rail with a longer length of the other buffer conveyor alternately transports the stored predetermined battery cells It is characterized in that it further comprises a device.

In this case, the plurality of storage devices may transfer predetermined battery cells stored in the second rail of the plurality of buffer conveyors separated from each other to a predetermined discharge tray disposed in each of the separated areas.

In one embodiment of the present invention according to the above-described configuration, the alternating device includes one transfer rail provided upwardly on the first rail of the buffer conveyor and a pair of pickup devices provided on the one transfer rail. , The pair of pickup devices may be driven so that when one pickup device lifts the battery cells stored on the first rail, the other pickup device puts the battery cells down on the second rail. .

Alternatively, in another embodiment of the present invention according to the above-described configuration, the buffer conveyor includes a first rail, a second rail, and a third rail having different lengths, and the length (a) of the first rail, the second The length (b) of the second rail and the length (c) of the third rail are made in the order of c > b > a, wherein the alternating device is a first transport rail provided above the first rail, and the second rail A first pickup device provided on one transfer rail to transport the battery cells stored on one of the first rails of the plurality of buffer conveyors to the second rail of the other buffer conveyor, and a first pickup device provided above the second rail. It may be formed in plurality including two transfer rails and a second pickup device for transporting the battery cells stored on the second rail of any one of the plurality of buffer conveyors to the third rail of the other buffer conveyor.

In addition, the secondary battery capacity screening system is made to be formed at a different height from the supply belt and the discharge belt, a first workstation for transporting a supply tray transported through the supply belt to a height at which the capacity selection device is disposed; It characterized in that it further comprises a second workstation for transferring the discharge tray conveyed through the discharge belt to the height at which the capacity screening device is arranged.

In addition, the first workstation and the second workstation are arranged to form a pair separated based on the grade (n) to be selected, and the pair of first workstations corresponds to each of the pair of buffer trays. Thus, at least two or more are provided so that at least two or more supply trays are respectively arranged, and it is characterized in that it prevents work delay due to transportation of the supply tray picked up in the first workstation.

In addition, the secondary battery capacity screening system of the present invention according to the above-described configuration is characterized in that the plurality of the supply belt and the discharge belt are arranged side by side in the transport direction, and the supply belt and the discharge belt are shared.

In the present invention according to the above configuration, the buffer conveyors respectively arranged in the area dividing the grade to be sorted are formed in a straight line crossing the supply belt and the discharge belt, so that a faster sorting operation can be performed compared to the same facility area. there are advantages to

In addition, the present invention discharges the battery cells according to the sorting operation of a plurality of sorting devices in each partitioned area to a discharge tray in a row, one sorting device sorts all the grades to be sorted, and the storage device is a partitioned area By performing only the storage in , it is possible to prevent the sorting operation from being delayed by the speed according to the buffer and storage operation.

In addition, the present invention uses a buffer conveyor for temporarily storing the battery cells classified according to each of a plurality of sorting devices and an alternating device for sorting the battery cells stored in the buffer conveyor into each discharge tray, a predetermined number on each rail There is an advantage in that the battery cells can be alternated between each buffer conveyor by utilizing the delay time for which the battery cells are stored.

1 is a plan view showing a secondary battery capacity screening system of the present invention.
Figure 2 is an exemplary view showing the operation of the first workstation of the present invention.
Figure 3 is an exemplary view showing the operation of the alternating device according to an embodiment of the present invention.
4 and 5 are exemplary views showing an alternating device according to another embodiment of the present invention.
6 is an exemplary view showing the operation of the storage device of the present invention.
7 is a plan view for explaining the buffer conveyor of the present invention.
8 is a plan view showing a modified example of the secondary battery capacity screening system of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and detailed description will be given. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, the technical idea of the present invention will be described in more detail with reference to the accompanying drawings.

Since the accompanying drawings are merely examples shown to explain the technical idea of the present invention in more detail, the technical idea of the present invention is not limited to the form of the accompanying drawings.

1 is a plan view illustrating a secondary battery capacity screening system of the present invention. Referring to FIG. 1 , a secondary battery capacity screening system 1000 according to an embodiment of the present invention includes a first workstation 100 and a second It may be configured to include a workstation 200 , a buffer conveyor 300 , a sorting device 400 , a storage device 500 , an alternating device 600 , and a detection sensor unit 700 .

At this time, the capacity selection system 1000 is provided between a pair of supply belts 20 and the discharge belt 30 arranged side by side in one direction to separate the battery cells 1 supplied to the supply belt 20 , respectively. The battery cells 1 stored in the supply tray 11 transported through the supply belt 20 are selected for each detected capacity, and transported through the discharge belt 30. It operates to store the battery cells 1 of the selected capacity in the discharge tray 12 , and the present invention will be described in more detail below according to the operation sequence of the capacity selection system 1000 .

First, after the manufacturing process of the secondary battery, the charge capacity of each manufactured battery cell is detected, and stored in the tray 10 for transporting the battery cell according to the order in which it is transported. At this time, the tray 10 has an arrangement such as 14x14 or 16x16, stores each battery cell in an arranged position, and in the capacity detection process of the battery cell, capacity information according to the arrangement position stored in each tray After labeling, it is delivered to a sorting system for sorting operation. That is, the capacity selection system 1000 recognizes the barcode labeled on the supply tray 11 supplied through the supply belt 20 , and capacity information of the battery cells according to the arrangement position of each supply tray 11 . can be input.

The sorting device 400 is configured to transport the plurality of battery cells 1 filled in the supply tray 11 transferred through the supply belt 20 and sort them by grade, and each supply tray 11 ) receives the capacity information according to the arrangement position, and transports each battery cell 1 filled in the supply tray 11 to the buffer conveyor 300 . At this time, the buffer conveyor 300 includes a plurality of rails provided to store the battery cells selected by the sorting device 400 according to each grade, and the plurality of rails are the supply belt 20 . It is formed so as to face the discharge belt 30 from the one of the sorting device 400, it is preferable that the number corresponding to the class (n) to be sorted is arranged, here. The plurality of rails of the buffer conveyor 300 stores only battery cells corresponding to any one of the classified grades.

At this time, the distance that the single sorting device 400 moves to sort each battery cell 1 is one of the biggest factors affecting the overall production speed of the secondary battery capacity selection process, and in general, the supply tray ( 11) Picking up the battery cells corresponding to one column or row and sorting them on the plurality of rails of the buffer conveyor 300, according to the capacity information of the battery cells held by the sorting device 400, the buffer It moves above the conveyor 300, and there is an operation time according to a delay time that occurs when there are several battery cells in one grade, and at this time, the capacity selection system 1000 of the present invention is the buffer conveyor 300 ) from one side of the plurality of rails, the battery cells stored by the sorting device 400 are moved to the other side and stored, and when a predetermined number of battery cells stored on the other side of each rail are stored, the other side of the buffer conveyor 300 Each is transported to the discharge tray 12 provided in the discharge valve 30 by the storage device 500 provided above the. Here, the storage device 500 is operated to transport to the discharge tray 12 when a certain number of battery cells selected and stored by the sorting device 400 are filled, so that the battery cells are filled with a certain number There will be a delay time to lose.

That is, the production time of the capacity sorting device 1000 is due to the operating speed of the sorting device 400, and in the prior art, as the buffer conveyor is configured to turn from the supply belt along the inner side of the discharge belt, As the grade increases, the overall length of the system increases, and accordingly, the length of the buffer conveyor also increases, resulting in a limitation that the production speed cannot be improved compared to the increased area. As the battery selects the battery cells in one discharge tray, it is necessary to use all the rails of the buffer conveyor classified according to the class. And interference with the battery cells carried by the sorting device that is operated later by the battery cells moving along the same rail occurs, resulting in a major problem in that the sorting operation is defective and the entire process has to be stopped. The present invention has the advantage that, while overcoming such a problem, at least two or more sorting devices can be used to achieve a remarkably improved working speed compared to the same area. In more detail, it will be described in more detail by giving examples of modifications of the present invention below.

The buffer conveyor 300 stores the battery cells selected by the sorting device 400 from one side according to each grade, and transports the stored battery cells to the other side extending adjacent to the discharge belt 30, In order to transport the battery cells filled by the storage device 500 to a predetermined number or more to the discharge tray 12 corresponding to each grade, the battery cells are temporarily stored so that the predetermined number is filled, in this case, The buffer conveyor 300 is provided in a straight line so that one end of each rail faces the supply belt 20 and the other end faces the discharge belt 30, the supply belt 20 and the discharge belt 30 It is preferable to arrange in a plurality along the transport direction of the. At this time, the sorting device 400, the buffer conveyor 300, and the storage device 500 are arranged in each area separated based on the plurality of discharge trays 200 arranged to correspond to the class n to be sorted. As many as possible, the plurality of buffer conveyors 300 are provided with a plurality of sorting devices 400 by rails having a number (n) corresponding to the class (n) to be sorted, respectively. It is possible to improve the working speed of the secondary battery capacity screening device of the present invention.

In addition, the buffer conveyor 300 , the sorting device 400 , the storage device 500 and the alternating device 600 are formed to be formed at different heights from the supply belt 20 and the discharge belt 30 , so that the sorting device To prevent the delay of the supply belt 20 and the discharge belt 30 according to the operation of the 400 and the storage device 500, and to discharge each independently when all the battery cells are filled in the plurality of discharge trays 21 By doing so, it is possible to prevent a delay time between sorting operations from occurring. At this time, the first workstation 100 transfers the supply tray 11 transferred through the supply belt 20 to the height at which the buffer conveyor 300 is arranged, and during the operation of the sorting device 400 . When the transported supply tray 11 is supported and the sorting operation of all the battery cells filled in the transported supply tray 11 is finished, the emptied tray 10 is transported to be seated on the supply rail 20 to the outside. works to eject. In addition, the second workstation 200 is configured to transport the discharge tray 12 transferred through the discharge belt 30 to the height at which the buffer conveyor 300 is disposed, and the grade (n) to be sorted ) is preferably provided above the discharge rail 30 in a number corresponding to the number of discharge trays 12 corresponding to the number.

In addition, the first workstation 100 and the second workstation 200 may be formed in plurality so as to be arranged in respective areas separated based on the grade n to be selected, as shown in FIG. 2 . , at least one of the first workstations 101 and 102 of the plurality of first workstations 100 so that at least two or more supply trays 11 are disposed respectively corresponding to the plurality of buffer trays 300 , respectively. It is preferable that two or more are provided so as to prevent work delay due to transportation of the supply tray 11 held by the first workstation 100 .

In more detail, as shown in (a) of FIG. 2 , when two supply trays 11 are supplied, the two first workstations 101 and 102 fix the supplied supply tray 11 to the upper side. and one sorting device 410 provided above performs sorting of the supply tray 11 fixed to one first workstation 101 . Thereafter, as shown in (b) of FIG. 2 , when the sorting operation of the supply tray 11 fixed to the one first workstation 101 is completed, the sorting device 410 is disposed adjacent to another The sorting operation is performed by moving to the other first workstation 102 to which the one supply tray 11 is fixed, and at this time, the one first workstation 101 on which the sorting operation is completed is the supply tray ( 11) is transferred to be seated on the supply belt 20, and the additionally supplied supply tray 11 is re-transferred upward to wait for the next turn.

Figure 3 is an exemplary view showing the operation of the alternating device according to an embodiment of the present invention, Figures 4 and 5 are exemplary views showing an alternating device according to another embodiment of the present invention, Figures 3 to 5, the plurality of buffer conveyors 300 are first rails 311a, 312a, 313a, 314a, 325a, 326a, 327a. ') and a second rail (321b, 322b, 323b, 324b, 315b, 316b, 317b, 318b, hereinafter referred to as 'b'), and the first rail (a) and the second rail ( b) is made to have different lengths, among the plurality of buffer conveyors 310 and 320 arranged in separate areas, the length of any one of the buffer conveyors 310 is short on the first rail (a). By further including an alternating device 600 for transporting a predetermined battery cell stored as a second rail (b) with a long length of one buffer conveyor 320, the conventional interference caused by using a plurality of sorting devices 400 The advantage of solving the problem is that the storage device 500 provided on the other side of the plurality of buffer conveyors 300 for transporting the battery cells independently selected according to the sorting device 400 interferes with each other. have. Here, the alternating device 600) is provided on the transfer rail 610 and the transfer rail 610 provided above the buffer conveyor 300, a plurality of rails of the buffer conveyor 300 are disposed. It may include a pickup device 620 that moves left and right in the direction and transports the battery cells stored in the plurality of rails, wherein the transfer rail 610 of the alternating device 600 is configured with the plurality of buffer conveyors 300 ) by alternating the battery cells stored in the first rail (a) and the second rail (b) between the plurality of buffer conveyors 300 by the pickup device 620 to cover the width in the left and right direction, and then , the predetermined battery cells stored in the plurality of buffer conveyors (b) separated from the plurality of storage devices (510, 520) are transferred to the predetermined discharge trays (201 to 208) disposed in each of the separated areas. It is desirable to be configured to be able to do so.

< Example 1 >

At this time, the alternating device 600 is preferably made to correspond to the number of the plurality of rails of the buffer conveyor 300 are partitioned to have different lengths, and the plurality of rails having the longest length is the first It is preferable to correspond to the number of second workstations 200 corresponding to the divided and arranged area based on the number of two workstations 200 . For example, in the case of a capacity sorting device having eight grades and having two sorting devices 400 , eight second workstations 200 are disposed above the discharge belt 30 , and , At this time, a pair of divided areas are formed based on the four second workstations 200, respectively, and buffer conveyors 310 and 320 having 8 rails in each formed area, and sorting devices 410 and 420. and storage devices 510 and 520 are provided to form a pair. Here, it is preferable that the pair of buffer conveyors 310 and 320 have at least four second rails b corresponding to the selection criteria of the second workstation 200 provided in each divided area. .

In addition, as the area divided based on the predetermined (n) second workstation 200 increases, the work speed can be increased by providing a plurality of sorting devices 400 and storage devices 500 , As the amount of work of the alternating device 600 for transporting the battery cells of the buffer conveyor 300 between each area to alternately increases, and accordingly the equipment becomes more complicated, the cost incurred in constructing the overall system increases and the A work delay in the alternating device 600 may occur.

<Second embodiment>

At this time, as shown in FIG. 4 , the alternating device 600 is configured to move the buffer conveyor 300 from the first rail (a) to the second rail (b) more quickly, the buffer conveyor ( One transfer rail 610 provided upward on the first rail (a) of 300) and a pair of pickup devices 621 and 622 provided on the one transfer rail 610 may be included. , At this time, the pair of pickup devices 621 and 622 is, when any one pickup device 621 lifts the battery cell stored in the first rail (a), the other pickup device 622 is By driving the battery cells down on the second rail (b), the operating speed of the alternating device 600 can be increased.

< 3rd embodiment >

Alternatively, as shown in FIG. 5, when the buffer conveyor 300, the sorting device 400, and the storage device 500 are divided into a pair, the pair of buffer conveyors 300 have different lengths from each other. a first rail (a), a second rail (b) and a third rail (c) having a length of the first rail (a), a length of the second rail (b), and a third rail (c) ) may be made in the order of c > b > a, wherein the order in which the first rail (a), the second rail (b), and the third rail (c) are arranged is the gist of the present invention. Various modifications may be made without deviation, but it is preferable to be symmetrical with respect to the discharge tray 12 divided into a pair so as to minimize the transfer of the alternating device 600 .

At this time, the alternating device 600 is provided on the first transfer rail 610a provided above the first rail (a), and the first transfer rail 610a, any one of the plurality of buffer conveyors A first alternating device ( 600a) and a second transfer rail 610b provided above the second rail (b), and a battery cell stored in the second rail (b) of any one of the plurality of buffer conveyors (310). By comprising a plurality of second alternating devices 600b including a second pickup device 620b for transporting to the third rail c of the other buffer conveyor 320, It can increase the working speed.

That is, as described above, one sorting device 400 has a number of rails corresponding to the number of grades to be sorted in order to sort the ginji cells filled in the supply tray 11 and transport them to each sorted rail. It is preferable to interlock with the buffer conveyor 300 .

6 is an exemplary view illustrating the operation of the storage device of the present invention. Referring to FIG. 6 , the second workstation 200 includes the discharge belt 30 to correspond to the number of grades n to be selected. It is disposed above the, and the plurality of storage devices 500 are made in plurality so as to be disposed in each area separated based on the plurality of discharge trays 21 arranged corresponding to the grade (n) to be selected, The plurality of storage devices 500 transfer predetermined battery cells stored in the second rail (b) of the plurality of buffer conveyors 300 separated from each other to a predetermined discharge tray 21 disposed in each of the separated areas. It can be configured to transfer to.

More specifically, in the case of a capacity sorting device having eight grades and having two sorting devices 400 , eight second workstations 200 are disposed above the discharge belt 30 , and in this case , to form a pair of divided areas based on the four second workstations 200, respectively, and buffer conveyors 310 and 320 having 8 rails in each formed area, sorting devices 410 and 420, and storage Devices 510 and 520 are provided to form a pair. Here, in the pair of buffer conveyors 310 and 320, at least four second rails b corresponding to the selection criteria of the second workstation 200 provided in each divided area are disposed, at this time, The storage device 500 picks up the battery cells stored in the second rail b and transports them to the discharge tray 21 of the second workstation 200 having a corresponding grade in the longitudinal direction of the buffer tray 300 . (front and rear direction) and the plurality of rails may be configured to operate in a stacking direction (left and right direction).

In addition, the above-described sorting device 400, the storage device 500, and the alternating device 600 are operated to move in the vertical, forward, and left-right directions, such as a robot arm capable of holding the battery cell. It is preferably made of a configuration. In this case, the sorting device 400 may be connected to a control unit (not shown) that receives arrangement information from the supply tray 11 for performing a sorting operation, and selects stored battery cells according to the arrangement information, and the controller includes The first workstation 100 , the second workstation 200 , the sorting device 400 , the storage device 500 , the alternating device 600 , and the supply belt 20 constituting the capacity selection system 1000 . ), the overall work order of the discharge belt 30 and can be controlled to perform each set work.

7 is a plan view for explaining the buffer conveyor of the present invention. Referring to FIG. 7 , the buffer conveyor 300 is a supply unit 300-1 on which the battery cells selected and transported from the sorting device 400 are seated. and a storage unit 300-2 that temporarily stores the selected battery cells after passing through the supply unit 300-1 until a predetermined number is satisfied, wherein the storage unit 300-2 is a battery The supply unit 300-, which is formed to have a plurality of lines capable of accommodating the cells, and passes through the supply unit 300-1, and is transferred to the storage unit 300-2 having the plurality of lines so that the battery cells can be divided and relayed. 1) and a relay unit 300-3 interposed between the storage unit 300-2 may be further included.

In this case, the secondary battery capacity screening system 1000 of the present invention may further include a detection sensor unit 700 including a plurality of sensors for detecting the battery cells transferred through the buffer conveyor 300 , and the detection The sensor unit 700 includes a storage number detection unit 710 for detecting the number of battery cells stored from the other end of the storage unit 300-2 of the buffer conveyor 300 and at least a portion of the buffer conveyor 300. It observes and may include a cell fall detection unit 720 that detects that the transferred battery cell falls.

The stored number detection unit 710 includes a first sensor 711 for detecting battery cells approaching the other end of the buffer conveyor 300 and a second sensor 712 for detecting a predetermined number of stored battery cells. In this case, the second sensor is spaced apart from the first sensor 711 by a predetermined length to one side to detect the observed battery cells, and the control unit includes the first sensor 711 and the second sensor ( 712), it is determined that sufficient battery cells are stored, and the storage device 500 can control to transport the battery cells of the detected line.

The cell fall detection unit 720 is for detecting the fall of the battery cell that is seated on the buffer conveyor 300 and is transported. is provided, and the control unit receives the detection signals of the battery cells applied from the plurality of sensors 721 and 722, and determines whether the battery cells are overturned. In more detail, the plurality of sensors 721 and 722 are spaced apart by a predetermined height upward from the lower end of the buffer conveyor 300 to observe the upper side of the transferred battery cells, and the controller is directed in the direction in which the battery cells are transferred. After the movement of the battery cell is sensed from the third sensor 721 disposed in front of If the detection signal from the fourth sensor 722 is not applied, it is determined that the transferred battery cell has fallen, and it is preferable that the capacity selection system is temporarily stopped and a warning signal is delivered to the manager. Here, the plurality of sensors of the detection sensor unit 700 may be provided on each of the plurality of rails of the buffer conveyor 300 or may be provided to collectively detect the plurality of rails.

In addition, the buffer conveyor 300 is configured such that a transport puck into which the battery cells can be inserted can be circulated in order to more safely transport the battery cells to be transported, so that the battery cells fall down and of the battery cells. It will be possible to prevent damage that occurs during transport.

8 is a plan view showing a modified example of the secondary battery capacity screening system of the present invention. Referring to FIG. 8 , the secondary battery capacity screening system 1000 of the present invention having the above-described configuration includes the supply belt 20. and a plurality of discharge belts 30 arranged side by side in the transport direction, in which case, the plurality of secondary battery capacity selection systems 1000 may include the pair of supply belts 20 and discharge belts 30 . It is preferred that they are arranged to be shared.

At this time, as described above, the capacity screening system 1000 of the present invention is configured so that a delay according to the operation speed of the sorting device 400 does not occur. 1000) per area occupied by the eight discharge trays 12 arranged based on the 8 grades to be sorted, when two sorting devices 400 are used, one sorting device 400 is 250 PPM (sorting per minute) speed), the present invention can implement a working speed of 500 PPM per one capacity screening system 1000a, and in this case, the capacity screening system 1000 of the present invention is configured with the supply belt 20 on the first floor. ) and the discharge belt 30 are provided on the second floor to share, and there is an advantage in that it is possible to prevent work delay due to interference between the capacity selection systems 1000a and 1000b disposed adjacent to each other.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

1: battery cell
10: tray 11: supply tray
12: discharge tray
20: supply belt 30: discharge belt
1000: battery capacity selection device
100: first workstation 200: first workstation
300: buffer conveyor
300-1: supply unit 300-2: storage unit
300-3: relay unit
310: first buffer conveyor 320: second buffer conveyor
311a, 312a, 313a, 314a, 325a, 326a, 327a, 328a: first rail
315b, 316b, 317b, 318b, 321b, 322b, 323b, 324b: 2nd rail
315c, 316c, 317c, 318c, 321c, 322c, 323c, 324c: 3rd rail
400: sorting device 500: storage device
600: alternating device
610: transport rail 620: pickup device
700: detection sensor
710: storage number detection unit 720: cell fall detection unit

Claims (10)

In the secondary battery capacity screening system provided between a pair of supply belts and discharge belts arranged side by side in one direction to select battery cells supplied to the supply belt for each grade,
a sorting device for transporting a plurality of battery cells filled in a supply tray transported through the supply belt and sorting them by grade;
a buffer conveyor including a plurality of rails provided to store the battery cells selected by the sorting device according to grades; and
a storage device for transporting a predetermined battery cell stored in the buffer conveyor to a discharge tray transported through the discharge belt;
including,
The buffer conveyor is provided in a straight line such that one end of each rail faces the supply belt and the other end faces the discharge belt, and is arranged in plurality along the conveying direction of the supply belt and the discharge belt,
The sorting device, the buffer conveyor and the storage device,
Doedoe made in plurality so as to be disposed in each area separated based on a plurality of discharge trays disposed corresponding to the grade (n) to be sorted,
The plurality of buffer conveyors,
Rails each having a number (n) corresponding to the grade (n) to be selected is arranged,
It includes a first rail and a second rail in which predetermined rails having the same length are disposed adjacent to each other, wherein the first rail and the second rail are made to have different lengths from each other,
Among the plurality of buffer conveyors arranged in areas separated from each other, the first rail with a short length of one of the buffer conveyors and the second rail with a longer length of the other buffer conveyor transport the stored predetermined battery cells. Alternating device; secondary battery capacity selection system comprising a.
delete delete According to claim 1,
The plurality of storage devices are configured to transfer predetermined battery cells stored in the second rail of the plurality of buffer conveyors separated from each other to a predetermined discharge tray disposed in each of the separated areas. system.
5. The method of claim 4,
The alternating device is
One transfer rail provided upwardly on the first rail of the buffer conveyor, and
A pair of pickup devices provided on the one transfer rail;
including,
The pair of pickup devices is characterized in that when one pickup device lifts the battery cells stored on the first rail, the other pickup device is driven to put the battery cells down on the second rail. secondary battery capacity selection system.
5. The method of claim 4,
The buffer conveyor includes a first rail, a second rail, and a third rail having different lengths, the length of the first rail (a), the length of the second rail (b), and the length of the third rail ( c) is a secondary battery capacity screening system, characterized in that in the order of c > b > a.
7. The method of claim 6,
The alternating device is
A first transfer rail provided above the first rail, and a battery cell provided on the first transfer rail and stored in any one of the plurality of buffer conveyors to the second rail of the other buffer conveyor a first pickup device for carrying; and
A second transport rail provided above the second rail, and a second pickup device for transporting the battery cells stored in any one of the second rails of the plurality of buffer conveyors to the third rail of the other buffer conveyor;
A previous battery capacity selection system, characterized in that it consists of a plurality comprising a.
6. The method of claim 5,
The buffer conveyor is made to be formed at a different height from the pair of supply and discharge belts,
a first workstation for transporting a supply tray transported through the supply belt to a height at which the buffer conveyor is disposed; and
a second workstation for transferring the discharge tray transferred through the discharge belt to a height at which the buffer conveyor is disposed;
Secondary battery capacity selection system, characterized in that it further comprises.
9. The method of claim 8,
The first workstation and the second workstation,
Doedoe made in plurality so as to be disposed in each area separated based on a plurality of discharge trays disposed corresponding to the grade (n) to be sorted,
The pair of first workstations,
Corresponding to each of the pair of buffer trays, at least two or more are provided so that at least two or more supply trays are respectively disposed,
Secondary battery capacity screening system, characterized in that it prevents work delay due to transportation of the supply tray picked up in the first workstation.
10. The method according to any one of claims 1 and 4 to 9,
The secondary battery capacity selection system,
A secondary battery capacity screening system, characterized in that the plurality of supply belts and the discharge belt are arranged side by side in the transport direction, and the supply belt and the discharge belt are shared.

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