KR101653341B1

KR101653341B1 - An optimization method for a crane of charging-discharging device and the system using the same

Info

Publication number: KR101653341B1
Application number: KR1020130105496A
Authority: KR
Inventors: 이규황; 이호경; 허자영; 허순기
Original assignee: 주식회사 엘지화학
Priority date: 2013-09-03
Filing date: 2013-09-03
Publication date: 2016-09-09
Also published as: KR20150026521A

Abstract

Disclosed is a method of optimizing a charge / discharge cranes by controlling a crane that carries a tray in a charge / discharge unit.
(a) confirming whether there are two trays adjacent to each other that are simultaneously shipped out of requested trays in the charge / discharge unit; (b) loading the priority trays among the two trays capable of simultaneous shipment and adjacent to each other on a crane; And (c) moving the trays stacked in the step (b), and to an optimization system using the optimization method.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of optimizing a charging / discharging crane and a system using the same,

The present invention relates to a method of optimizing a charge and discharge crane and a system using the same, and more particularly, to a method of controlling and optimizing a crane that carries a tray of a charge and discharge process, and a system using the same.

2. Description of the Related Art As the demand for high-performance mobile devices has increased, the performance of secondary batteries has been rapidly increasing.

In particular, medium- or large-sized devices such as notebook computers, portable DVDs, mini-PCs, electric vehicles, hybrid electric vehicles and the like are required to use battery modules including a plurality of battery cells due to their output and capacity problems.

The battery module is manufactured through a process of assembling the battery cell and a process of activating the battery. In the battery activation step, the battery cell is mounted on a predetermined jig and charged under the conditions necessary for activation. Conventional secondary batteries such as nickel-cadmium batteries and lead-acid batteries can be used immediately after production, so the charging and discharging apparatuses were required only for performance evaluation. However, in the case of a lithium secondary battery such as a lithium ion battery and a lithium polymer battery which are widely used in recent years, the performance as a battery is completed only after a predetermined charging / discharging process, that is, It became an essential equipment for the production line of the secondary battery.

The charging / discharging device repeats charging and discharging processes several times in order to store the electric energy in the first battery, which is assembled in the production process of the secondary battery, to perform the function of giving the characteristics of the secondary battery. As the supply of secondary batteries increases due to the surge in demand, it is necessary to control the charging / discharging devices that perform charging / discharging functions at the production stage of the secondary batteries.

The battery cell in which the operation is completed in the charge and discharge apparatus is moved to the next process by a stacker crane (hereinafter, referred to as a crane) that carries a tray for loading the battery cells. And the time and economic burden is increased according to the number of operations, efficient control thereof is required.

As a conventional invention for controlling such a crane, Korean Patent Laid-Open Publication No. 2010-0067202 discloses an invention for improving the ease of maintenance and repair of a crane, and operates a crane according to a departure order However, there is a problem in that there is a limitation in fundamentally improving the working efficiency of the crane.

KR 2010-0067202 A

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art,

The time required for the activation of the battery cells can be minimized by reducing the work time required for moving the trays by moving the two adjacent trays of the same type, And an object of the present invention is to provide a method of optimizing a charge and discharge crane capable of smoothly moving the logistics.

In order to achieve the above object,

Disclosure of the Invention The present invention provides a method of optimizing a charge / discharge crane by controlling a crane that carries a tray in a charging / discharging machine, comprising the steps of: (a) Checking whether there are trays in the tray; (b) loading the priority trays among the two trays capable of simultaneous shipment and adjacent to each other on a crane; And (c) moving the trays loaded in the step (b).

The present invention also relates to an optimization system for a charge and discharge crane by controlling a crane that carries a tray in a charge and discharge machine, the system comprising: (a) A confirmation module to check if there are two trays; (b) a tray loading module for loading the priority trays among the two trays capable of simultaneous shipment and adjacent to each other on a crane; And (c) a movement module for moving the trays loaded in the step (b).

According to the optimization method of the charge / discharge cranes according to the present invention,

It is possible to minimize the time required for the activation of the battery cell by reducing the total operation time required to move the tray, thereby facilitating the movement of the logistics in the process, thereby reducing the manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a charge / discharge device used in the present invention. FIG.
2 is a diagram illustrating a charge / discharge system used in the present invention.
3 is a view showing a process of loading the conveyor belt according to the present invention.
4 is a table showing an experiment according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail.

Disclosure of the Invention The present invention provides a method of optimizing a charge / discharge crane by controlling a crane that carries a tray in a charging / discharging machine, comprising the steps of: (a) Checking whether there are trays in the tray; (b) loading the priority trays among the two trays capable of simultaneous shipment and adjacent to each other on a crane; And (c) moving the trays loaded in step (b).

The manufacturing process of a battery cell largely consists of manufacturing, assembling, activating, and packaging / shipping processes of an electrode. Among them, the activation step is a step of storing the battery cells that have been passed through the assembling step for a certain period of time, aging them, and then repeating charging / discharging again to improve battery performance. Such an activation process can be carried out through an aging chamber or a charge / discharge unit, which is usually composed of boxes of n columns × m stages as shown in FIG. As shown in FIG. 2, the aging chamber and the charge / discharge unit are included in a charge / discharge system that repeats charging / discharging, and the activation process proceeds. When the battery cells are loaded / unloaded from the aging chamber and the charge / discharge unit, they are stacked and transported on a tray, which is loaded or unloaded from the conveyor belt by a single stacker crane.

The charge / discharge unit performs operations such as charging, discharging, large capacity discharge, and OCV check, and the operations available for each box are different. In addition, since a plurality of models are simultaneously worn in one charging / discharging device and work times such as charging, discharging, and large capacity discharging are different for each model, even when the same model is supplied with the same model, Estimated delivery time will vary. The charging / discharging device is requested by the control method or system, and the crane performs the work according to the request.

The logistics flow in these charge and discharge units can be divided into goods receipt, goods issue, and movement from box to box (Box to Box movement). Wherein the crane is capable of transporting two trays with two forks. Since one crane performs all the work on one charge and discharge machine and many models are loaded on the same charge and discharge machine, the number of commands the crane has to handle increases, so even if the crane uses all two forks, When the tray is transported, the operation time of the crane becomes long. Therefore, if two trays (pokes) are used all at once and the two trays adjacent to each other can be transported at the same time in the same manner as in the present invention, the crane can be transported without moving between the boxes, The advantage of smooth flow of the logistics is obtained.

In order to minimize the time required for the activation of the battery cell by controlling the crane that is a device for transporting the tray containing the battery cells while opening the box of the charge / discharge device and the aging chamber, the present invention includes the following steps do.

First, in step (a), it is checked whether there are two trays adjacent to each other, which are simultaneously shipped from the requested trays in the charge / discharge unit.

The trays capable of simultaneous shipment are those in which the model, the line and the subsequent process between the trays are the same, and the two trays adjacent to each other mean that the trays are vertically or horizontally adjacent to each other in the charge / discharge unit. When the trays capable of simultaneous dispatch are adjacent to each other as described above, the number of movements of the crane can be reduced by moving them at a time.

Thereafter, in step (b), priority trays among the two trays which are simultaneously shipped and are adjacent to each other are loaded on the crane. The priority order may be variously determined according to the judgment of the user. For example, a tray close to the crane may be preferentially loaded, an old tray may be loaded with priority, and a moving distance of the crane The trays having the shortest distance may be loaded first, or the trays preceding the tray may be loaded with priority. According to the priority order, as the trays are moved to the crane after they are moved, the overall operation time can be shortened, thereby increasing the work efficiency.

The crane may have a plurality of loading forks, and preferably two loading forks.

Thereafter, in the step (c), the stacked trays are moved in the step (b). Since the trays can be moved by using a conveyor belt and two trays are simultaneously moved, it is possible to improve the time and space efficiency by improving the loading rate during the moving process, thereby increasing the overall shipment rate, There is an advantage that the movement of the logistics within the process becomes smooth.

Hereinafter, a method of optimizing the charge / discharge cranes will be described in more detail. 3 (A) shows a charge / discharge device in which trays are arranged in m rows and n stages, and a request to issue a product to the trays 1 to 8 sequentially is received. In FIG. 3A, Tray 1 and Tray 5, Tray 2 and Tray 6, Tray 3 and Tray 7, and Tray 4 and Tray 8 are trays capable of simultaneous shipment. In this case, according to the conventional shipping method, the conveyor belt is sequentially stacked as shown in FIG. 3 (B). More specifically, the tray 1, the tray 2, and the tray 3 are sequentially stacked, After the tray 4 and the tray 5 are simultaneously stacked, the tray 6, the tray 7, and the tray 8 are sequentially stacked on the conveyor belt.

However, according to the method of the present invention, as shown in FIG. 3 (C), simultaneously deliverable trays are preferentially loaded on the crane at the same time. More specifically, as shown in FIG. 3 (C), the trays 1 and 5, which can be loaded on the crane at the same time, the trays 2 and 6, and the trays 4 and 8 are simultaneously stacked on the conveyor belt It is possible to increase the spatial efficiency by decreasing the space required by the loading, and it is also possible to increase the time efficiency because the number of times of moving the crane is reduced and the time required for loading is reduced.

The present invention also provides an optimization system for a charge / discharge crane by controlling a crane that carries a tray in a charge / discharge unit,

(a) a confirmation module for confirming whether there are two trays which are simultaneously shipped from the requested trays in the charge / discharge unit and are adjacent to each other;

(b) a tray loading module for loading the priority trays among the two trays capable of simultaneous shipment and adjacent to each other on a crane;

(c) a movement module for moving the trays loaded in the step (b).

The two trays adjacent to each other of the confirmation module are characterized by being vertically or horizontally adjacent to each other in the charge / discharge unit.

The trays capable of simultaneous delivery of the confirmation module are characterized in that the model, the line and the subsequent process between the trays are the same.

And the crane of the tray loading module has two loading forks.

The priority trays of the tray stacking module are characterized in that the order of the goods shipment is advanced trays.

Wherein the trays of the priority order of the tray loading module are trays having the shortest moving distance of the crane.

The term " module " in the present invention means a unit for processing a specific function or operation, and may be implemented by hardware, software, or a combination of hardware and software.

Hereinafter, the present invention will be described in more detail with reference to examples. However, the embodiments of the present invention described below are illustrative only and the scope of the present invention is not limited to these embodiments. The scope of the present invention is indicated in the claims, and moreover, includes all changes within the meaning and range of equivalency of the claims.

Example

The optimization method of the charge and discharge cranes is simulated and the results are shown. First, after requesting a shipment to the shipment request trays as shown in FIG. 4, the crane was queued for 20 minutes, and the stacking and moving operations of the trays were performed.

Example One

As shown in FIG. 4, the models of the delivery request trays are AAA, ABB, and ACC, which are models that can be shipped simultaneously because the models, lines, and subsequent processes between the trays are the same. Among the trays requested to be shipped out, two trays which can be shipped simultaneously and which are adjacent to each other are AAA112 and AAA115, AAA113 and ACC121, AAA114 and ABB188, and ABB116 and ACC120. Of these trays, AAA113, ACC121, ABB116 And ACC120, AAA114 and ABB188, and AAA112 and AAA115 in the order of a fork with two forks. Thereafter, the remaining ABB 117 and AAA 111 were stacked in the order of a crane, and then moved to a conveyor belt.

As a result, the total number of movements of the crane was 4 simultaneous movements and 2 single movements, and there were total 6 movements.

Comparative Example One

For the same warehouse request trays as in the first embodiment, the trays were moved without moving simultaneously according to the warehouse request order. ACC121, ACC120, ABB188, ABB117, ABB116, AAA115, AAA114, AAA113, AAA112, and AAA111, and then moved to a conveyor belt.

As a result, the crane was moved 10 times by itself, and moved 10 times in total.

Through the comparison of the above-described embodiment and the comparative example, it has been found that the work time and the number of operations can be reduced by the method of optimizing the crane of the present invention, thereby increasing the overall working efficiency.

Claims

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By optimizing the system of charge / discharge crane by controlling the crane that carries the tray in the charge / discharge machine,
(a) a confirmation module for confirming whether there are two trays which are simultaneously shipped from the requested trays in the charge / discharge unit and are adjacent to each other;
(b) a tray loading module for loading the priority trays among the two trays capable of simultaneous shipment and adjacent to each other on a crane; And
(c) a movement module for moving the trays loaded in the step (b)
The trays capable of simultaneous shipment of the confirmation module are identical in model, line and subsequent process between the trays,
Wherein the trays of the priority order of the tray stacking module are the trays whose order is earlier than the order of the shipment, and the moving distance of the crane is the shortest distance.

The method of claim 7,
Wherein two trays adjacent to each other of the confirmation module are vertically or horizontally adjacent to each other in the charge / discharge unit.

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The method of claim 7,
Wherein the crane of the tray loading module has two loading forks.

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