Process management device and operation method thereof

Abstract

According to an embodiment disclosed in the present document, a process management device may comprise: an injection device for injecting an electrolyte into battery cells provided in a pallet; and a controller for correcting an injection amount of the electrolyte injected into each battery cell on the basis of a floating period of the injection device and the number of pallets for which injection is completed after the injection of the electrolyte is started.

Description

Process management device and its operating method

[0001] Cross-citation with related applications

[0002] This invention claims the benefit of priority from Korean Patent Application No. 10-2023-0175255, filed December 6, 2023, the entire contents of which are incorporated herein by reference.

[0003] Technology field

[0004] The embodiments disclosed in this document relate to a process management device and a method of operating the same.

[0005] Recently, active research and development has been conducted on secondary batteries. The term "secondary battery" refers to a rechargeable battery, encompassing both conventional Ni / Cd and Ni / MH batteries, as well as recent lithium-ion batteries. Among secondary batteries, lithium-ion batteries can boast higher energy densities than conventional Ni / Cd and Ni / MH batteries. They can be manufactured in small and lightweight designs, making them highly versatile power sources for mobile devices. Recently, their use has expanded to include power sources for electric vehicles, attracting attention as a next-generation energy storage medium.

[0006] The manufacturing process of these secondary batteries includes an electrolyte injection process. If the correct amount of electrolyte is not injected during the electrolyte injection process, defects may occur due to leakage or insufficient electrolyte.

[0007] One purpose of the embodiments disclosed in this document is to provide a process management device and an operating method thereof that prevents a phenomenon of insufficient injection amount of electrolyte injected into each battery cell.

[0008] The technical objectives of the embodiments disclosed in the document are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art from the descriptions below.

[0009] According to an embodiment disclosed in this document, a process management device may include an injection device that injects electrolyte into battery cells provided on a pallet, and a controller that corrects the amount of electrolyte injected into each battery cell based on a floating period of the injection device and the number of pallets in which injection is completed after the start of injection of the electrolyte.

[0010] According to an embodiment, the controller may perform the correction until the number of pallets for which the injection is completed reaches a preset value when the floating period of the injection device is greater than or equal to the first hour.

[0011] According to an embodiment, the preset value may be set to the number of pallets included in one cycle in which the injection device injects the electrolyte.

[0012] According to an embodiment, the controller may increase the injection amount of the electrolyte by a first value when the floating period of the injection device is greater than or equal to the first time and less than the second time.

[0013] According to an embodiment, the controller may correct the injection amount of the electrolyte based on the number of pallets for which the injection is completed, when the floating period of the injection device is a second hour or longer.

[0014] According to an embodiment, the controller may increase the injection amount of the electrolyte by a second value when the number of pallets for which the injection has been completed is less than a first number, and may increase the injection amount of the electrolyte by a third value when the number of pallets for which the injection has been completed is greater than or equal to the first number and less than the preset value.

[0015] According to an embodiment, the amount of the electrolyte to be corrected can be determined based on the floating period of the injection device.

[0016] According to an embodiment disclosed in the present document, a process management method may include a step of obtaining a floating period of an injection device that injects electrolyte into battery cells provided on a pallet, and a step of correcting an injection amount of electrolyte injected into each battery cell based on the floating period of the injection device and the number of pallets in which injection is completed after the start of injection of the electrolyte.

[0017] According to an embodiment, the step of correcting the amount of the electrolyte may be characterized in that, when the floating period of the injection device is a first hour or longer, the correction is performed until the number of pallets for which the injection is completed reaches a preset value.

[0018] According to an embodiment, the step of correcting the amount of the electrolyte may be characterized by adding the amount of the electrolyte to the injection amount by a first value when the floating period of the injection device is greater than or equal to the first time and less than the second time.

[0019] According to an embodiment, the step of correcting the amount of the electrolyte may be characterized by correcting the amount of the electrolyte injected based on the number of pallets in which the injection is completed, when the floating period of the injection device is a second hour or longer.

[0020] According to an embodiment, the step of correcting the amount of the electrolyte may be characterized in that, if the number of pallets for which the injection has been completed is less than a first number, the amount of the electrolyte injected is increased by a second value, and if the number of pallets for which the injection has been completed is greater than or equal to the first number and less than the preset value, the amount of the electrolyte injected is increased by a third value.

[0021] The process management device and its operating method according to the embodiments disclosed in this document can prevent a phenomenon of insufficient electrolyte injected into each battery cell, thereby reducing the defect rate.

[0022] In addition, various effects may be provided, either directly or indirectly, through this document.

[0023] FIG. 1 is a block diagram showing a process management device according to one embodiment disclosed in this document.

[0024] FIG. 2 is a diagram showing the relationship between the floating time and the amount of liquid reduction according to one embodiment disclosed in this document.

[0025] FIG. 3 is a drawing showing an example of a result of applying a correction method according to one embodiment disclosed in this document.

[0026] FIG. 4 is a flowchart illustrating a process management method according to one embodiment disclosed in this document.

[0027] FIG. 5 is a flowchart illustrating a process for correcting an electrolyte injection amount according to one embodiment disclosed in this document.

[0028] FIG. 6 is a block diagram showing the hardware configuration of a computing system for performing an operation method of a process management device according to one embodiment disclosed in this document.

[0029] Hereinafter, various embodiments of the present invention will be described with reference to the attached drawings. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that the present invention encompasses various modifications, equivalents, and / or alternatives of the embodiments.

[0030] In this document, the singular form of a noun corresponding to an item may include one or more of said items, unless the context clearly indicates otherwise. In this document, phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B, or C," "at least one of A, B, and C," and "at least one of A, B, or C" may each include any one of the items listed together in that phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish the corresponding element from other corresponding elements, and do not limit the corresponding elements in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as being “coupled” or “connected” to another component (e.g., a second component), with or without the terms “functionally” or “communicatively,” it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0031] Each component (e.g., a module or a program) described in this document may include one or more entities. According to various embodiments, one or more components or operations of the components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0032] The term "module" or "part" used in this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0033] Various embodiments of the present document may be implemented as software (e.g., a program or an application) including one or more instructions stored in a machine-readable storage medium (e.g., memory). For example, a processor of the device may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the device to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily in the storage medium.

[0034] FIG. 1 is a block diagram showing a process management device according to one embodiment disclosed in this document.

[0035] Referring to FIG. 1, the process management device (1) may include an injection device (100) and a controller (200).

[0036] The process management device (1) can manage the process of injecting electrolyte into each battery cell during the electrolyte injection process of injecting electrolyte into the inside of a battery cell during the battery manufacturing process.

[0037] The process management device (1) can prevent defects that occur due to insufficient amount of electrolyte (injection amount) injected into a battery cell, such as during the floating period of the injection device (100) or when a cleaning pallet is inserted during the electrolyte injection process.

[0038] In addition, the process management device (1) can maintain the injection amount injected into each battery cell constant and accurately by correcting the injection amount of electrolyte.

[0039] Accordingly, the process management device (1) can prevent defects due to insufficient electrolyte injection amount in the battery cell and improve yield by lowering the defect rate in the manufacturing process.

[0040] In the electrolyte injection process, pallets are typically used to simultaneously inject electrolyte into a large number of battery cells. A pallet may contain a large number of battery cells for electrolyte injection. For example, each pallet may have a large number of battery cells arranged in rows.

[0041] A pallet equipped with battery cells can be placed into an injection device (100) that injects electrolyte. The injection device (100) can inject electrolyte into the battery cells equipped on the pallet.

[0042] The injection device (100) may include, for example, a nozzle configured to inject electrolyte into battery cells. The injection device (100) may include various known accessories, such as a storage tank in which electrolyte is stored, a pump for supplying electrolyte from the storage tank to the nozzle, and the like.

[0043] When a pallet is loaded, the injection device (100) can inject electrolyte into multiple battery cells located on the pallet. For example, each battery cell on the pallet may have an open top, and the nozzle of the injection device (100) can enter the open top of each battery cell to inject electrolyte into the battery cell. At this time, the injection device (100) can be configured to inject a predetermined amount of electrolyte.

[0044] The injection device (100) may be configured to quantitatively inject a predetermined amount of electrolyte into each battery cell. In this case, the actual amount of electrolyte injected into the battery cell may be reduced due to the electrolyte adhering to the surfaces of nozzles for injecting the electrolyte, pipes for receiving the electrolyte from the storage tank, etc.

[0045] Typically, nozzles, pipes, etc. are made of materials such as metal. As the floating period of the injection device (100) increases, the surface dries out, increasing the adhesion of the electrolyte, which may further reduce the amount of electrolyte injected into the battery cell. In such a case, the amount of electrolyte injected into the battery cell may become insufficient, resulting in defects.

[0046] Accordingly, the process management device (1) can correct the injection amount of the electrolyte by taking into account the floating period of the injection device (100). In one embodiment, the controller (200) can correct the injection amount of the electrolyte differently depending on the floating period of the injection device (100).

[0047] The controller (200) can perform overall control of the injection operation of the injection device (100). The controller (200) can correct the injection amount of electrolyte injected into the battery cell from the injection device (100).

[0048] According to an embodiment, the controller (200) can correct the injection amount of the electrolyte based on the floating period of the injection device (100) and the number of pallets in which injection is completed after the start of injection of the electrolyte.

[0049] The controller (200) can obtain the idle period of the injection device (100). Here, the idle period of the injection device (100) may mean a period of time that has elapsed without the injection device (100) injecting the electrolyte. For example, the controller (200) can calculate the idle period as the difference between the time at which the operation of the injection device (100) begins (e.g., the time at which the injection of the electrolyte begins) and the time at which the previous operation of the injection device (100) is completed (e.g., the time at which the electrolyte is finally injected into the pallet).

[0050] According to an embodiment, the controller (200) may perform compensation until the number of pallets in which injection is completed reaches a preset value when the idle period of the injection device is longer than a first time. The first time may be experimentally or statistically determined, and may be set to a time when, for example, the injection amount becomes insufficient due to surface adhesion of the electrolyte.

[0051] When a certain level of electrolyte injection is completed from the injection device (100), the controller (200) can perform correction until the number of pallets in which injection is completed reaches a preset value, since the amount of electrolyte injected is not reduced due to adhesion of the electrolyte to the surface of the nozzle, pipe, etc. of the injection device (100).

[0052] According to an embodiment, the preset value may be set to the number of pallets included in one cycle in which the injection device (100) injects electrolyte. For example, the operation cycle of the injection device (100) may be based on the completion of electrolyte injection into a certain number of pallets. For example, the injection device (100) may consider one cycle as the completion of electrolyte injection into battery cells provided in 11 pallets, in which case the preset value may be set to 11.

[0053] When the electrolyte injection of the injection device (100) passes one cycle, the controller (200) may not correct the electrolyte injection amount thereafter because the amount of electrolyte injected does not decrease due to adhesion of the electrolyte on the surface of the injection device (100).

[0054] According to an embodiment, the controller (200) may increase the injection amount of the electrolyte by a first value when the immobility period of the injection device (100) is greater than or equal to a first time and less than a second time. For example, the controller (200) may increase the injection amount of the electrolyte injected from the injection device (100) by a preset amount by the first value. Here, the second time may have a value greater than the first time.

[0055] The controller (200) can compensate for the decrease in the amount of electrolyte injected into the battery cell according to the floating period of the injection device (100) by adding and correcting the amount of electrolyte injected.

[0056] According to an embodiment, the controller (200) can correct the injection amount of the electrolyte based on the number of pallets for which injection is completed when the floating period of the injection device (100) is longer than the second hour.

[0057] If the floating period of the injection device (100) is longer than the second hour, the controller (200) can adjust the electrolyte correction amount as the electrolyte injection process progresses without uniformly compensating the amount of electrolyte injected into the input pallet because the amount of electrolyte reduction due to the floating period is large.

[0058] According to an embodiment, the controller (200) may increase the amount of electrolyte injected by a second value when the number of pallets for which injection is completed is less than a first number. In this case, the second time may have a value greater than the first time, and accordingly, the second value for correcting the amount of electrolyte injected may be greater than the first value.

[0059] According to an embodiment, the controller (200) can increase the injection amount of the electrolyte by a third value when the number of pallets for which injection is completed is greater than or equal to a first number and less than a preset value.

[0060] In one embodiment, the third value may be less than the second value because the electrolyte loss through the pipe or the like is reduced through the injection process of the palette.

[0061] According to an embodiment, the amount of electrolyte to be corrected may be determined based on the floating period of the injection device (100). For example, the process management device (1) may collect statistics on the amount of electrolyte reduction according to the floating period of the injection device (100) and determine the amount of correction according to the floating period accordingly. For example, the first to third values ​​described above may be set differently depending on the floating period of the injection device (100).

[0062] According to another embodiment, the process management device (1) can determine whether the pallet fed into the injection device (100) is a cleaning pallet.

[0063] When the pallet is cleaned, some of the electrolyte to be injected into the battery cell may be reduced due to adhesion, etc., as the surface of the pallet dries, as well as the nozzle, pipe, etc. of the injection device (100).

[0064] Accordingly, the process management device (1) can determine when a cleaning pallet is introduced during the electrolyte injection process into the introduced pallet and correct the amount of electrolyte injected.

[0065] According to an embodiment, the controller (200) can pass the pallet fed into the injection device (100) through the injection chamber and pressurization chamber of the injection facility (100) if the pallet is a cleaning pallet. The controller (200) can perform a preparation process by first allowing the cleaning pallet to pass through the injection device (100) without injecting the electrolyte.

[0066] Thereafter, the controller (200) can wash the upper and lower parts of the cleaning pallet. Since there is a possibility of foreign substances such as cleaning liquid being present during the cleaning process of the pallet, the controller (200) can wash the upper and lower parts of the cleaning pallet.

[0067] The controller (200) can control the injection device (100) to inject electrolyte into battery cells located on the cleaning pallet after cleaning of the cleaning pallet is completed.

[0068] According to an embodiment, the controller (200) can perform correction during one cycle of the injection device (100). As described above, since the electrolyte injection process of the injection device (100) does not cause a decrease in the electrolyte due to surface adhesion or the like when one cycle passes, the controller (200) can correct the amount of electrolyte injected during one cycle of the injection device (100).

[0069] According to an embodiment, the process management device (1) may further include an interface panel (not shown) for receiving user input. The user can manage the electrolyte injection process or check the process progress by operating the interface panel of the process management device (1).

[0070] For example, the process management device (1) can receive an operation input for operating a process from a user through input devices such as touch input, button input, and mouse, and can display graphics, UI, etc., such as a screen that assists in selecting the operation input, on an interface panel. According to an embodiment, the interface panel can include an HMI (human machine interface) panel.

[0071] According to an embodiment, the interface panel may include a UI for specifying a cleaning palette. A user may perform operation input to the process management device (1) by manipulating the UI of the interface.

[0072] According to an embodiment, the controller (200) may determine whether a pallet is a cleaning pallet based on a user input. For example, the UI may be a UI for indicating whether a pallet being fed into the injection device (100) is a cleaning pallet. For example, the user may input a confirmation button indicating that it is a cleaning pallet or input the number of the cleaning pallet through the UI of the interface panel.

[0073] A user can input an operation to indicate whether a pallet fed into the injection device (100) is a cleaning pallet through the UI, and the controller (200) can receive a signal according to the user's operation input to determine whether a pallet fed into the injection device (100) is a cleaning pallet.

[0074] According to an embodiment, the correction amount of the electrolyte injection amount can be set based on the difference in the electrolyte injection amounts between the cleaned and uncleaned pallets. The controller (200) can control the injection device (100) to inject the set correction amount by adding it to the preset amount.

[0075] The amount of electrolyte injected into each of the cleaning palette and the non-cleaning palette can be experimentally and statistically verified, and for example, the controller (200) can determine the difference between the average injection amounts of each of them as a correction amount.

[0076] FIG. 2 is a diagram showing the relationship between the floating time and the amount of liquid reduction according to one embodiment disclosed in this document.

[0077] Referring to Fig. 2, the amount of electrolyte injection decreases according to the floating time of the injection device (100) can be confirmed. Referring to the graph illustrated in Fig. 2, it can be confirmed that the amount of electrolyte injection decreases tends to increase as the floating time of the injection device (100) increases.

[0078] Accordingly, the process management device (1) corrects the amount of electrolyte injected according to the floating time of the injection device (100) so that the electrolyte is injected into the battery cell, thereby preventing defects caused by insufficient electrolyte injected into the battery cell and improving the defect rate.

[0079] FIG. 3 is a drawing showing an example of a result of applying a correction method according to one embodiment disclosed in this document.

[0080] Referring to Fig. 3, the results obtained by applying the correction method of the process management device (1) can be confirmed. Fig. 3 shows a comparison of the defect rate when the correction method according to one embodiment of the present invention is applied and the defect rate when the correction method is not applied.

[0081] First, looking at the case where the correction method is not applied in FIG. 3, it can be confirmed that the defect rate in the first pallet is quite high at 34.72% when operation begins after the floating period of the injection device (100). This is because, as described above, as the surfaces of the nozzle, pipe, etc. dry out, a portion of the electrolyte to be injected into the battery cell is reduced due to adhesion, etc.

[0082] However, when the correction method of the process management device (1) was applied, it can be confirmed that the defect rate was significantly reduced to 3.82% even in the first pallet after the floating period of the injection device (100).

[0083] In addition, it can be confirmed that the overall defect rate of the pallets (pallets 1 to 11) injected during one cycle of the injection device (100) has also significantly decreased from 3.77% to 0.73% compared to before applying the correction method.

[0084] That is, the process management device (1) has the effect of significantly reducing the defect rate according to the floating period of the injection device (100) by controlling the amount of electrolyte injected into the battery cell in consideration of the floating period of the injection device (100).

[0085] In FIG. 3, it is illustrated that there are 288 battery cells located in each pallet and that 11 pallets are fed during one cycle of the injection device (100), but the number of battery cells located in each pallet and the number of pallets fed during one cycle of the injection device (100) are not limited thereto.

[0086] FIG. 4 is a flowchart illustrating a process management method according to one embodiment disclosed in this document.

[0087] Referring to FIG. 4, the process management method may include a step (S10) of obtaining a floating period of an injection device that injects electrolyte into battery cells provided on a pallet, and a step (S20) of correcting the injection amount of electrolyte injected into each battery cell based on the floating period of the injection device and the number of pallets in which injection is completed after the start of injection of electrolyte.

[0088] At step S10, the controller (200) can obtain the idle period of the injection device (100). For example, the controller (200) can calculate the idle period as the difference between the point in time when the operation of the injection device (100) starts (e.g., the point in time when the injection of the electrolyte starts) and the point in time when the previous operation of the injection device (100) is completed (e.g., the point in time when the injection of the electrolyte into the pallet is finally completed).

[0089] In step S20, the controller (200) can correct the amount of electrolyte injected into each battery cell from the injection device (100). In an embodiment, the controller (200) can correct the amount of electrolyte injected based on the floating period of the injection device (100) and the number of pallets for which injection has been completed.

[0090] FIG. 5 is a flowchart illustrating a process for correcting an electrolyte injection amount according to one embodiment disclosed in this document.

[0091] Referring to FIG. 5, the process management device (1) can correct the injection amount of the electrolyte based on the floating period of the injection device (100) and the number of pallets for which injection has been completed.

[0092] At step S100, the controller (200) can obtain the dead time of the injection device (100). The controller (200) can determine whether to correct the injection amount of the electrolyte and the corrected amount of the electrolyte according to the dead time of the injection device (100).

[0093] At step S110, the controller (200) can determine whether the dead time of the injection device (100) is greater than or equal to the first time. If the dead time of the injection device (100) is less than the first time (S110 - No), the process can proceed to step S120. If the dead time of the injection device (100) is greater than or equal to the first time (S110 - Yes), the process can proceed to step S130.

[0094] At step S120, the controller (200) can perform normal injection without compensating the injection amount of electrolyte injected into each battery cell. Here, normal injection may mean that the injection device (100) injects a preset amount of electrolyte into each battery cell.

[0095] At step S130, the controller (200) can determine whether the dead time of the injection device (100) is longer than the second time. If the dead time of the injection device (100) is shorter than the second time (S130 - No), the process can proceed to step S140. If the dead time of the injection device (100) is longer than the second time (S130 - Yes), the process can proceed to step S160.

[0096] At step S140, the controller (200) can correct the electrolyte injection amount of the injection device (100) to be increased by a first value.

[0097] At step S150, the controller (200) can count the number of pallets for which injection has been completed. The controller (200) can determine whether the number of pallets for which injection has been completed is greater than or equal to a preset value. If the number of pallets for which injection has been completed is less than the preset value, injection can be continued according to the corrected injection amount. At this time, the number of pallets for which injection has been completed can be increased by 1 each time pallet injection is completed.

[0098] The controller (200) can terminate the procedure when the number of completed injection pallets reaches a preset value.

[0099] At step S160, the controller (200) can determine whether the number of pallets that have been injected is greater than or equal to a first number. If the number of pallets that have been injected is less than the first number (S160 - No), the process can proceed to step S170. If the number of pallets that have been injected is greater than or equal to the first number (S160 - Yes), the process can proceed to step S180.

[0100] At step S170, the controller (200) can correct the electrolyte injection amount of the injection device (100) to be increased by a second value.

[0101] At step S180, the controller (200) can determine whether the number of pallets that have been injected is greater than or equal to a preset value. If the number of pallets that have been injected is less than the preset value (S180 - No), the process can proceed to step S190. At this time, the number of pallets that have been injected can be increased by 1 each time pallet injection is completed.

[0102] At step S190, the controller (200) can correct the electrolyte injection amount of the injection device (100) to be increased by a third value.

[0103] The process management device (1) can prevent defects caused by insufficient electrolyte injection by correcting the amount of electrolyte injected according to the floating time of the injection device (100).

[0104] FIG. 6 is a block diagram showing the hardware configuration of a computing system for performing an operation method of a process management device according to one embodiment disclosed in this document.

[0105] Referring to FIG. 6, a computing system (1000) according to one embodiment disclosed in the present document may include an MCU (1010), a memory (1020), an input / output I / F (1030), and a communication I / F (1040).

[0106] The MCU (1010) may be a processor that executes various programs (e.g., injection amount correction program, etc.) stored in the memory (1020), processes various information through these programs, and performs the functions of the controller included in the process management device shown in the aforementioned FIG. 1.

[0107] The memory (1020) can store various programs, such as an injection amount correction program. In addition, the memory (1020) can store various information, such as correction results.

[0108] Such memories (1020) may be provided in multiple numbers as needed. The memories (1020) may be volatile memories or non-volatile memories. As volatile memories (1020), RAM, DRAM, SRAM, etc. may be used. As non-volatile memories (1020), ROM, PROM, EAROM, EPROM, EEPROM, flash memories, etc. may be used. The examples of the memories (1020) listed above are merely examples and are not limited to these examples.

[0109] The input / output I / F (1030) can provide an interface that enables data transmission and reception between an input device (not shown) such as a keyboard, mouse, or touch panel, and an output device (not shown) such as a display and the MCU (1010).

[0110] The communication I / F (1040) is a configuration capable of transmitting and receiving various data with the server, and may be any device capable of supporting wired or wireless communication.

[0111] In this way, a computer program according to one embodiment disclosed in this document may be implemented as a module that is recorded in a memory (1020) and processed by an MCU (1010) to perform each function illustrated in FIG. 1, for example.

[0112] Although all components constituting the embodiments disclosed in this document have been described as being combined or operating in combination as one, the embodiments disclosed in this document are not necessarily limited to such embodiments. That is, within the scope of the purpose of the embodiments disclosed in this document, all of the components may be selectively combined and operated one or more times.

[0113] In addition, terms such as "include," "comprise," or "have" described above, unless specifically stated otherwise, mean that the corresponding component can be included, and therefore should be interpreted to include other components rather than excluding other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments disclosed in this document belong, unless otherwise defined. Commonly used terms, such as terms defined in a dictionary, should be interpreted to be consistent with the contextual meaning of the relevant technology, and shall not be interpreted in an idealized or overly formal sense, unless explicitly defined in this document.

[0114] The above description is merely an example of the technical idea disclosed in this document, and those skilled in the art to which the embodiments disclosed in this document pertain may make various modifications and variations without departing from the essential characteristics of the embodiments disclosed in this document. Therefore, the embodiments disclosed in this document are not intended to limit the technical idea of ​​the embodiments disclosed in this document, but to explain it, and the scope of the technical idea disclosed in this document is not limited by these embodiments. The scope of protection of the technical idea disclosed in this document should be interpreted by the claims below, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of rights of this document.

Claims

1. An injection device for injecting electrolyte into battery cells provided on a pallet; and A process management device including a controller that corrects the amount of electrolyte injected into each battery cell based on the floating period of the injection device and the number of pallets in which injection is completed after the start of injection of the electrolyte.

2. In paragraph 1, The above controller, A process management device that performs the correction when the floating period of the injection device is more than 1 hour, until the number of pallets in which the injection is completed reaches a preset value.

3. In paragraph 2, A process control device, wherein the above preset value is set to the number of pallets included in one cycle in which the injection device injects the electrolyte.

4. In paragraph 2, The above controller, A process management device that increases the injection amount of the electrolyte by a first value when the floating period of the injection device is longer than or equal to the first time and shorter than the second time.

5. In paragraph 2, The above controller, If the floating period of the above injection device is more than 2 hours, A process management device that corrects the injection amount of the electrolyte based on the number of pallets in which the injection has been completed.

6. In paragraph 5, The above controller, If the number of palettes for which the above injection is completed is less than the first number, the amount of the electrolyte injected is increased by the second value, A process management device that increases the injection amount of the electrolyte by a third value when the number of palettes for which the injection is completed is greater than or equal to the first number and less than the preset value.

7. In paragraph 1, A process management device, wherein the amount of electrolyte to be corrected is determined based on the floating period of the injection device.

8. A step for obtaining a floating period of an injection device that injects electrolyte into battery cells provided on a pallet; and A process management method comprising a step of correcting the amount of electrolyte injected into each battery cell based on the floating period of the injection device and the number of pallets in which injection is completed after the start of injection of the electrolyte.

9. In paragraph 8, The step of correcting the amount of the above electrolyte is: A process management method characterized in that when the floating period of the injection device is greater than or equal to 1 hour, the correction is performed until the number of pallets in which the injection is completed reaches a preset value.

10. In paragraph 9, The step of correcting the amount of the above electrolyte is: A process management method characterized in that when the floating period of the injection device is longer than the first time and shorter than the second time, the injection amount of the electrolyte is increased by a first value.

11. In paragraph 9, The step of correcting the amount of the above electrolyte is: A process management method characterized in that when the floating period of the injection device is 2 hours or longer, the injection amount of the electrolyte is corrected based on the number of pallets for which the injection is completed.

12. In paragraph 11, The step of correcting the amount of the above electrolyte is: If the number of palettes for which the above injection is completed is less than the first number, the amount of the electrolyte injected is increased by the second value, A process management method characterized in that when the number of palettes in which the above injection is completed is greater than or equal to the first number and less than the preset value, the injection amount of the electrolyte is increased by a third value.

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