Battery charging and discharging system and control device thereof

Abstract

A battery charging and discharging system according to one embodiment of the present invention may comprise: a cabinet; a plurality of charging and discharging units mounted in an accommodation space formed in the cabinet; a power supply device for supplying power to the plurality of charging and discharging units; and a power transfer device for electrically connecting the power supply device and the plurality of charging and discharging units. Here, the power supply device can simultaneously supply power to at least two charging and discharging units among the plurality of charging and discharging units through the power transfer device.

Description

Battery charging / discharging system and control device thereof

[0001] This application claims the benefit of Korean Patent Application No. 10-2023-0159987 filed with the Korean Intellectual Property Office on November 20, 2023, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to a battery charging / discharging system and a control device thereof, and more particularly, to a battery charging / discharging system and a control device thereof used in a battery activation process.

[0003] Secondary batteries are batteries that can be reused by charging even after discharge, and can be used as an energy source for small devices such as mobile phones, tablet PCs, and vacuum cleaners, and are also used as medium- to large-scale energy sources such as personal mobility, automobiles, and ESS (Energy Storage Systems) for smart grids.

[0004] Secondary batteries can be used in the form of assemblies such as battery modules in which multiple battery cells are connected in series and parallel, or battery racks in which battery modules are connected in series and parallel, depending on the requirements of the system.

[0005] Battery cells are manufactured through assembly and activation processes. Since battery cells are assembled in a discharged state, an activation process is required after the assembly process. This activates the positive electrode active material and forms a surface film (SEI, Solid Electrolyte Interface) on the negative electrode, enabling the battery to function. This activation process is called the formation process. The activation process can be performed by charging and discharging the battery cell multiple times according to a predefined charge / discharge profile.

[0006] A charging / discharging device for an activation process may include a tray in which batteries are accommodated, a probe plate positioned on the upper portion of the tray, a channel board electrically connected to each probe included in the probe plate to apply a charging / discharging current to the battery, and an actuator for raising and lowering the probe plate and the channel board. In general, a battery charging / discharging system is utilized that can charge / discharge multiple batteries simultaneously using a plurality of charging / discharging devices to shorten the time for the activation process.

[0007] A typical battery charging / discharging system comprises multiple charging / discharging devices and multiple individual power supply units that supply power to the charging / discharging devices. Each of the charging / discharging devices is configured to receive power from a corresponding individual power supply unit. Consequently, the volume of the cabinet housing the charging / discharging devices and power supply units may increase, and if the cabinet volume is limited, the number of charging / discharging devices housed within the cabinet may decrease.

[0008] The purpose of the present invention to solve the above problems is to provide a battery charging / discharging system that can be utilized in the battery activation process.

[0009] Another object of the present invention to solve the above problems is to provide a control device for such a battery charging / discharging system.

[0010] Another object of the present invention to solve the above problems is to provide a control method for such a battery charging / discharging system.

[0011] According to one embodiment of the present invention for achieving the above object, a battery charging / discharging system may include: a cabinet; a plurality of charging / discharging units mounted in a receiving space formed in the cabinet; a power supply device for supplying power to the plurality of charging / discharging units; and a power transmission device for electrically connecting the power supply device and the plurality of charging / discharging units. Here, the power supply device may simultaneously supply power to at least two charging / discharging units among the plurality of charging / discharging units through the power transmission device.

[0012] The above power transmission device can electrically connect the output terminal of the power supply device and the input / output terminals of each of the plurality of charging / discharging units.

[0013] Here, the power transmission device may include a main power transmission member, one side of which is connected to an output terminal of the power supply device; and a plurality of sub power transmission members, one side of which is connected to the main power transmission member and the other side of which is connected to each of the input / output terminals of the charging / discharging units.

[0014] The charging / discharging units are mounted in the cabinet in a stacked structure, and the power supply device can be placed on an upper or lower layer of the charging / discharging units. Here, the power transmission device can include a main bus bar, one end of which is connected to an output terminal of the power supply device and the other end is formed to extend upward; and a plurality of sub bus bars, one end of which is connected to the main bus bar and the other end is extended horizontally and connected to input / output terminals of the charging / discharging units, respectively.

[0015] At least two of the above plurality of charging and discharging units can be charged simultaneously according to the same charging profile or discharged simultaneously according to the same discharging profile.

[0016] The above-described plurality of charge / discharge units are classified into a first group and a second group, and when the first group operates in charge mode, the second group operates in discharge mode, and when the first group operates in discharge mode, the second group can operate in charge mode. Here, power discharged from the group operating in discharge mode can be supplied to the group operating in charge mode through the power transmission device.

[0017] The power supply device can adjust the power output to the power transmission device side in response to the power discharged from the group operating in the discharge mode.

[0018]

[0019] According to one embodiment of the present invention for achieving the above other objects, a control device is a control device of a battery charging / discharging system including a plurality of charging / discharging units, a power supply device, and a power transmission device electrically connecting the power supply device and the plurality of charging / discharging units, the control device including at least one processor; and a memory storing at least one command executed through the at least one processor.

[0020] The at least one command may include a command for classifying the plurality of charging and discharging units into a first group and a second group; a command for setting the first group to a charging mode and a command for setting the second group to a discharging mode; and a command for controlling the charging and discharging units included in the first group to be simultaneously supplied with power from the power supply device through the power transmission device and charged.

[0021] The command for controlling the charging may include a command for controlling the charging and discharging units included in the first group to be charged simultaneously according to the same charging profile.

[0022] The at least one command may further include a command for controlling the charging and discharging units included in the second group to discharge simultaneously according to the same discharge profile.

[0023] The at least one command may further include a command for adjusting power of the power supply device output to the power transmission device side in response to power discharged from the second group.

[0024] The at least one command may further include a command for switching the first group to a discharge mode and switching the second group to a charge mode when the charging process of the first group is completed and the discharging process of the second group is completed.

[0025]

[0026] According to an embodiment of the present invention for achieving the above another object, a control method is provided, which is a control method for a battery charging / discharging system including a plurality of charging / discharging units, a power supply device, and a power transmission device electrically connecting the power supply device and the plurality of charging / discharging units, the control method including the steps of: classifying the plurality of charging / discharging units into a first group and a second group; setting the first group to a charging mode and setting the second group to a discharging mode; and controlling the charging / discharging units included in the first group to be simultaneously supplied with power from the power supply device through the power transmission device and to be charged.

[0027] The step of controlling the charging may include a step of controlling the charging and discharging units included in the first group to be charged simultaneously according to the same charging profile.

[0028] The above control method may further include a step of controlling the charging and discharging units included in the second group to discharge simultaneously according to the same discharge profile.

[0029] The above control method may further include a step of adjusting the power of the power supply device output to the power transmission device side in response to the power discharged from the second group.

[0030] The above control method may further include a step of switching the first group to a discharge mode and switching the second group to a charge mode when the charging process of the first group is completed and the discharging process of the second group is completed.

[0031] According to the above-described embodiment of the present invention, the space efficiency of the battery charging / discharging system is improved, so that the number of charging / discharging units accommodated therein can be increased.

[0032] In addition, according to the above-described embodiment of the present invention, the power efficiency of the battery charging / discharging system can be improved.

[0033] Figure 1 is a block diagram of a battery charging / discharging system according to an embodiment of the present invention.

[0034] Figure 2 is a front cross-sectional view of a charging / discharging unit according to an embodiment of the present invention.

[0035] Figure 3 shows the arrangement structure of a battery charging / discharging system according to an embodiment of the present invention.

[0036] FIG. 4 is a reference diagram for explaining the operation of a battery charging / discharging system in a first mode according to an embodiment of the present invention.

[0037] FIG. 5 is a reference diagram for explaining the operation of a battery charging / discharging system in a second mode according to an embodiment of the present invention.

[0038] Figure 6 is an operation flowchart of a control method of a battery charging / discharging system according to an embodiment of the present invention.

[0039] Figure 7 is a block diagram of a control device of a battery charging / discharging system according to an embodiment of the present invention.

[0040] 100: Cabinet

[0041] 200: Charge and discharge unit

[0042] 300: Power supply

[0043] 400: Power Transmission Device

[0044] 500: Control unit

[0045] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. Throughout the description of each drawing, similar reference numerals have been used to designate similar components.

[0046] Terms such as "first," "second," "A," and "B" may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, the first component could be referred to as the "second component," and similarly, the second component could also be referred to as the "first component." The term "and / or" includes any combination of multiple related items listed or any one of multiple related items listed.

[0047] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0048] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0049] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0050] Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the attached drawings.

[0051]

[0052] Figure 1 is a block diagram of a battery charging / discharging system according to an embodiment of the present invention.

[0053] A battery charging / discharging system according to an embodiment of the present invention may include a cabinet (100), a plurality of charging / discharging units (200), a power supply device (300), a power transmission device (400), and a control device (500).

[0054] The cabinet (100) is a structure that accommodates charging and discharging units (200), a power supply device (300), and a power transmission device (400). Here, the control device (500) may be accommodated inside the cabinet (100) or may be placed outside the cabinet and connected to the charging and discharging units (200) and the power supply device (300).

[0055] The cabinet (100) may include one or more receiving spaces in which charging and discharging units (200) are installed. Here, the cabinet (100) may include a plurality of receiving spaces formed in a multi-layered structure, and the plurality of charging and discharging units (200) may be installed in each of the receiving spaces and arranged in a stacked structure.

[0056] The cabinet (100) may include one or more accommodation spaces in which a power supply unit (300) and a control unit (500) are installed. Here, the accommodation spaces for the power supply unit (300) and the control unit (500) may be provided in one or more of the upper and lower layers of the accommodation spaces for the charging and discharging units (200).

[0057] A charge / discharge unit is a device that is electrically connected to a battery and performs a charge / discharge process. Here, the battery charge / discharge system may include N charge / discharge units (200-1 to 200-N).

[0058] Each of the charge / discharge units (200-1 to 200-N) can charge / discharge the batteries when multiple batteries are accommodated inside, thereby activating the batteries.

[0059] The power supply unit (300) is a device that supplies power to the charging and discharging units (200). Here, the power supply unit (300) can convert power supplied from an external source into a predetermined voltage and supply it to the charging and discharging units (200). The power supply unit (300) may include one or more of an AC / DC inverter for converting AC voltage into DC voltage, and a DC / DC converter for reducing DC voltage.

[0060] The power transmission device (400) is a device that electrically connects the charging and discharging units (200) and the power supply device (300) and transmits power output from the power supply device (300) to the charging and discharging units (200). Here, the power transmission device (400) may be configured to include one or more of a cable and a bus bar.

[0061] The power transmission device (400) electrically connects the output terminal of the power supply device (300) and the input / output terminals of each of the charging / discharging units (200-1 to 200-N), and can transmit the DC voltage output from the power supply device (300) to each of the charging / discharging units (200-1 to 200-N).

[0062] The power transmission device (400) may include one or more circuit breakers positioned on a power transmission path.

[0063] The power supply device (300) can simultaneously supply power to at least two or more charging / discharging units among the charging / discharging units (200) through the power transmission device (400). That is, the input / output terminals of the plurality of charging / discharging units and the output terminal of the power supply device (300) are connected to a node having the same potential, so that power output from the power supply device (300) can be integrally supplied to the plurality of charging / discharging units.

[0064] The control device (500) can control the operation of the charge / discharge units (200). Here, the control device (500) can control the operation mode of each of the charge / discharge units (200). For example, the control device (500) can control at least some of the charge / discharge units (200-1 to 200-N) to operate in a charge mode, and control the remaining some to operate in a discharge mode.

[0065] The control device (500) can control the charge / discharge units so that the battery is charged / discharged according to a predefined charge / discharge profile. Here, the charge / discharge profile can include a current value, a voltage value, and a power value per unit time.

[0066]

[0067] Figure 2 is a front cross-sectional view of a charging / discharging unit according to an embodiment of the present invention.

[0068] Referring to FIG. 2, the charge / discharge unit may include a tray (210), a probe plate (220), and a channel board (230).

[0069] The tray (210) is a structure that accommodates a plurality of battery cells. Here, the tray (210), while containing a plurality of battery cells, can be transported through a transport device and placed inside a charging / discharging unit. Furthermore, when the charging / discharging process by the charging / discharging unit is completed, the tray (210) can be discharged to the outside through the transport device and transported to a device for another process.

[0070] The probe plate (220) is placed on the upper portion of the tray (210) and may include a plurality of positive contact pins and negative contact pins. Here, the probe plate (220) may include a number of positive contact pins and negative contact pins corresponding to the number of battery cells.

[0071] The positive contact pin and the negative contact pin are positioned at positions corresponding to the positive and negative poles of the battery cell, respectively, and when a charging and discharging process is in progress, the probe plate (220) can be lowered to make electrical contact with the positive and negative poles of the battery cell.

[0072] Meanwhile, the probe plate (220) illustrated in FIG. 2 is a single plate including both a positive contact pin and a negative contact pin. However, unlike that illustrated in FIG. 2, the probe plate may be implemented as a structure in which a positive probe plate is placed on the upper portion of the tray (210) and a negative probe plate is placed on the lower portion of the tray (210). In this case, when the tray (210) is placed inside the charging / discharging unit through the transport device, the negative contact pin of the negative probe plate and the negative pole of the battery cell come into contact, and then, when the positive probe plate is lowered, the positive contact pin and the positive pole of the battery cell may come into contact.

[0073] The channel board (230) is electrically connected to the positive contact pin and negative contact pin included in the probe plate (210) and can apply current for charging and discharging the battery. Here, the channel board (230) can be operated by receiving power through the power supply device (300) illustrated in FIG. 1.

[0074] The channel board (230) may include a distribution circuit for distributing the supplied power to each battery cell so that each battery cell can be charged and discharged according to a predefined charging profile.

[0075]

[0076] Figure 3 shows the arrangement structure of a battery charging / discharging system according to an embodiment of the present invention.

[0077] The cabinet (100) may include an upper frame (110) and a lower frame (120).

[0078] The upper frame (110) may include a plurality of receiving spaces formed in a multi-layered structure, and the charging and discharging units (200-1 to 200-N) may be placed in each of the receiving spaces and arranged in a layered structure.

[0079] The lower frame (120) is placed at the bottom of the upper frame (110) and can accommodate a power supply device (300) and a control device (500) inside.

[0080] Meanwhile, unlike as shown in FIG. 3, the charging and discharging units (200-1 to 200-N) may be placed on the lower frame (120), and the power supply unit (300) and the control unit (500) may be placed on the upper frame (110).

[0081] Each of the charge / discharge units (200-1 to 200-N) can charge / discharge the batteries when multiple batteries are accommodated inside, thereby activating the batteries.

[0082] The power supply unit (300) can convert power supplied from an external source into a predetermined voltage and supply it to the channel board of each of the charging and discharging units (200). Here, the power supply unit (300) can be electrically connected to the channel board of each of the charging and discharging units (200-1 to 200-N) through a power transmission device.

[0083] The power transmission device may include a main power transmission member (410) and a plurality of sub power transmission members (420-1 to 420-N). Here, one side of the main power transmission member (410) may be connected to an output terminal of a power supply device (300). In addition, each of the sub power transmission members (420-1 to 420-N) may have one side connected to the main power transmission member (410) and the other side connected to a channel board of a corresponding charging / discharging unit (200-1 to 200-N). That is, as illustrated in FIG. 3, the input / output terminals of the charging / discharging units (200-1 to 200-N) and the output terminal of the power supply device (300) may be connected to nodes having the same potential. Accordingly, power output from the power supply unit (300) can be supplied integrally to each channel board of a plurality of charging / discharging units (200-1 to 200-N).

[0084] Each of the sub-power transmission elements (420-1 to 420-N) may include one or more circuit breakers positioned on the power transmission path. The circuit breakers may be turned on and off by a control device (500).

[0085] In an embodiment, the power transmission device may include a main power busbar and a plurality of sub-busbars. That is, each of the main power transmission member (410) and the plurality of sub-power transmission members (420-1 to 420-N) may be implemented as a busbar.

[0086] Here, the main bus bar may be formed such that one end is connected to the output terminal of the power supply device (300) and the other end extends upward. In addition, each of the sub bus bars may be formed such that one end is connected to the main bus bar and the other end extends horizontally and is connected to the channel board of the corresponding charging / discharging unit (200-1 to 200-N). That is, the input / output terminals of the charging / discharging units (200-1 to 200-N) and the output terminal of the power supply device (300) may be connected to a bus bar having the same potential. Accordingly, power output from the power supply device (300) may be integrally supplied to each channel board through the main bus bar and the sub bus bars.

[0087]

[0088] FIG. 4 is a reference diagram for explaining the operation of a battery charging / discharging system in a first mode according to an embodiment of the present invention, and FIG. 5 is a reference diagram for explaining the operation of a battery charging / discharging system in a second mode according to an embodiment of the present invention.

[0089] Meanwhile, FIGS. 4 and 5 illustrate a battery charging / discharging system in which four charging / discharging units (#1 to #4) are accommodated in a stacked structure. Here, the structure of the battery charging / discharging system illustrated in FIGS. 4 and 5 is an example for explaining the operation of the battery charging / discharging system according to an embodiment of the present invention, and the scope of the present invention is not limited to this structure.

[0090] The power transmission device may include a main bus bar (410') and a plurality of sub bus bars (420'-1 to 420'-4). Here, the main bus bar (410') may have one end connected to an output terminal of the power supply device (300) and the other end formed to extend upward. In addition, each of the sub bus bars (420'-1 to 420'-4) may have one end connected to the main bus bar (410') and the other end extended in a horizontal direction and connected to a channel board of a corresponding charging / discharging unit.

[0091] At least two of the plurality of charge / discharge units may be simultaneously charged according to the same charge profile or simultaneously discharged according to the same discharge profile. For example, charge / discharge units #1 and #2 may be simultaneously charged according to the same charge profile, and #3 and #4 may be simultaneously discharged according to the same discharge profile.

[0092] The plurality of charge / discharge units can be classified into a first group and a second group. Here, when the first group operates in charge mode, the second group operates in discharge mode, and when the first group operates in discharge mode, the second group can operate in charge mode.

[0093] For example, among the charge / discharge units, #1 and #2 may be defined as a first group, and #3 and #4 may be defined as a second group. Here, when the battery charge / discharge system operates in the first mode, as illustrated in FIG. 4, the first group (#1 and #2) may operate in the charge mode, and the second group (#3 and #4) may operate in the discharge mode. In addition, when the battery charge / discharge system operates in the second mode, as illustrated in FIG. 5, the first group (#1 and #2) may operate in the discharge mode, and the second group (#3 and #4) may operate in the charge mode. Here, the setting of the first group and the second group, and the switching between the first mode and the second mode, may be performed by the control device (500).

[0094] Referring to FIGS. 4 and 5, power discharged from a group operating in a discharge mode can be supplied to a group operating in a charge mode via a power transmission device. For example, in the first mode, as illustrated in FIG. 4, discharge power output from the second group (#3 and #4) can be transmitted to the first group (#1 and #2) via the sub busbars (420'-1 to 420'-4) and the main busbar (410'). For another example, in the second mode, as illustrated in FIG. 5, discharge power output from the first group (#1 and #2) can be transmitted to the second group (#3 and #4) via the sub busbars (420'-1 to 420'-4) and the main busbar (410').

[0095] As the first group and the second group are set to different operation modes and the charging and discharging process proceeds simultaneously, the output power of the power supply device (300) is reduced, so that the power efficiency of the battery charging and discharging system can be improved.

[0096] The power supply device (300) can adjust the power output to the power transmission device in response to the power discharged from the group operating in the discharge mode. Specifically, when the number of charge / discharge units included in each of the first group and the second group is different, the power supply device (300) can adjust the output power amount based on the number of charge / discharge units included in the group operating in the discharge mode. For example, when the first group includes four charge / discharge units and the second group includes six charge / discharge units, when switching from the first mode (the first group - charge mode, the second group - discharge mode) to the second mode (the first group - discharge mode, the second group - charge mode), the power output from the power supply device (300) can increase in response to the amount of power discharged to the power transmission device. Conversely, when switching from the second mode to the first mode, the power output from the power supply device (300) can decrease in response to the amount of power discharged to the power transmission device. Meanwhile, the control device (500) transmits a control signal for adjusting the output power to the power supply device (300), and the power supply device (300) can adjust the output power according to the control signal.

[0097]

[0098] Figure 6 is a flowchart illustrating an operational flowchart of a control method for a battery charging / discharging system according to an embodiment of the present invention. The control method described below can be performed by a control device included in the battery charging / discharging system.

[0099] The control device can classify the charging and discharging units included in the battery charging and discharging system into a first group and a second group (S610).

[0100] The control device can set a charge / discharge mode for each group (S620). For example, the control device can set the first group to charge mode and the second group to discharge mode.

[0101]

[0102] Thereafter, the control device can control the operation of each group so that the charging / discharging process is performed according to the charging / discharging mode set in S620 (S630).

[0103] Specifically, the control device can control the charging / discharging units included in the first group to be simultaneously supplied with power from a power supply device via a power transmission device and charged. Here, the control device can control the charging / discharging units included in the first group to be simultaneously charged according to the same charging profile.

[0104] Additionally, the control device can control the charging and discharging units included in the second group so that the discharging process is performed simultaneously with the charging process of the first group. Here, the control device can control the charging and discharging units included in the second group so that they are discharged simultaneously according to the same discharge profile.

[0105] The control device can adjust the power of the power supply device output to the power transmission device side in response to the power discharged from the second group.

[0106] When the charging and discharging processes of the groups are completed, the control device can switch the charging and discharging modes of each group (S640). Specifically, when the charging process of the first group is completed and the discharging process of the second group is completed, the control device can switch the first group to the discharging mode and the second group to the charging mode.

[0107] Thereafter, the control device can control the operation of each group so that the charging / discharging process is performed according to the charging / discharging mode switched in S640 (S650).

[0108] Specifically, the control device can control the charging / discharging units included in the second group to be simultaneously supplied with power from the power supply unit via the power transmission device and charged. Here, the control device can control the charging / discharging units included in the second group to be simultaneously charged according to the same charging profile.

[0109] Additionally, the control device can control the charging and discharging units included in the first group so that the discharging process is performed simultaneously with the charging process of the second group. Here, the control device can control the charging and discharging units included in the first group so that they are discharged simultaneously according to the same discharge profile.

[0110] When the charge / discharge process of the groups is completed, the control device can check (S660) whether the charge / discharge process has been performed for a predetermined target number of cycles. If the accumulated cycle number is less than the target number of cycles (N of S660), the control device can switch the charge / discharge mode of each group (S640) and control the operation of each group so that the charge / discharge process is performed according to the switched charge / discharge mode (S650). If the accumulated cycle number is equal to the target number of cycles (Y of S660), the control device can terminate the charge / discharge process for battery activation and switch the battery charge / discharge system to a stop mode.

[0111]

[0112] Figure 7 is a block diagram of a control device of a battery charging / discharging system according to an embodiment of the present invention.

[0113] A control device (500) according to an embodiment of the present invention may be located within a battery charging / discharging system, which includes a plurality of charging / discharging units, a power supply device, and a power transmission device electrically connecting the power supply device and the plurality of charging / discharging units.

[0114] The control device (500) may include at least one processor (510), a memory (520) that stores at least one command executed through the processor, and a transmission / reception device (530) that is connected to a network and performs communication.

[0115] The at least one command may include a command for classifying the plurality of charging and discharging units into a first group and a second group; a command for setting the first group to a charging mode and a command for setting the second group to a discharging mode; and a command for controlling the charging and discharging units included in the first group to be simultaneously supplied with power from the power supply device through the power transmission device and charged.

[0116] The command for controlling the charging may include a command for controlling the charging and discharging units included in the first group to be charged simultaneously according to the same charging profile.

[0117] The at least one command may further include a command for controlling the charging and discharging units included in the second group to discharge simultaneously according to the same discharge profile.

[0118] The at least one command may further include a command for adjusting power of the power supply device output to the power transmission device side in response to power discharged from the second group.

[0119] The at least one command may further include a command for switching the first group to a discharge mode and switching the second group to a charge mode when the charging process of the first group is completed and the discharging process of the second group is completed.

[0120] The control device (500) may also include an input interface device (540), an output interface device (550), a storage device (560), etc. Each component included in the control device (500) may be connected by a bus (570) and communicate with each other.

[0121] Here, the processor (510) may refer to a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to embodiments of the present invention are performed. The memory (or storage device) may be comprised of at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory may be comprised of at least one of a read-only memory (ROM) and a random access memory (RAM).

[0122]

[0123] The operations of the method according to an embodiment of the present invention can be implemented as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes any type of recording device that stores data readable by a computer system. Furthermore, a computer-readable recording medium can be distributed across network-connected computer systems, allowing the computer-readable program or code to be stored and executed in a distributed manner.

[0124]

[0125] While some aspects of the present invention have been described in the context of a device, they may also represent a description of a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also be described as a corresponding block or item or a feature of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, one or more of the most significant method steps may be performed by such a device.

[0126] Although the present invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims

1. As a battery charging and discharging system, cabinet; A plurality of charging and discharging units, which are accommodated in a receiving space formed in the above cabinet; A power supply unit that supplies power to the plurality of charging and discharging units; and A power transmission device is included, which electrically connects the power supply unit and the plurality of charging and discharging units. The above power supply unit, A battery charging / discharging system that simultaneously supplies power to at least two charging / discharging units among the plurality of charging / discharging units through the power transmission device.

2. In claim 1, The above power transmission device, A battery charging / discharging system electrically connecting the output terminal of the power supply device and the input / output terminals of each of the plurality of charging / discharging units.

3. In claim 2, The above power transmission device, A main power transmission member, one end of which is connected to the output terminal of said power supply; and A battery charging / discharging system comprising a plurality of sub-power transmission members, one side of which is connected to the main power transmission member and the other side of which is connected to each of the input / output terminals of the charging / discharging units.

4. In claim 1, The above charging and discharging units are mounted in the cabinet in a laminated structure, The above power supply unit is placed above or below the charging and discharging units, The above power transmission device, A main bus bar, one end of which is connected to the output terminal of the power supply device and the other end is formed to extend upward; and A battery charging / discharging system comprising a plurality of sub-busbars, one end of which is connected to the main busbar and the other end thereof extends horizontally and is connected to each of the input / output terminals of the charging / discharging units.

5. In claim 1, At least two of the above multiple charging / discharging units, A battery charging and discharging system in which batteries are simultaneously charged according to the same charge profile or simultaneously discharged according to the same discharge profile.

6. In claim 1, The above plurality of charging and discharging units are classified into a first group and a second group, When the first group operates in charge mode, the second group operates in discharge mode, A battery charging / discharging system, wherein the first group operates in discharge mode and the second group operates in charge mode.

7. In claim 6, A battery charging / discharging system, wherein power discharged from a group operating in a discharging mode is supplied to a group operating in a charging mode through the power transmission device.

8. In claim 7, The above power supply device, A battery charging / discharging system that adjusts power output to the power transmission device side in response to power discharged from a group operating in the above discharge mode.

9. A control device of a battery charging / discharging system, comprising a plurality of charging / discharging units, a power supply unit, and a power transmission device electrically connecting the power supply unit and the plurality of charging / discharging units, at least one processor; and A memory storing at least one instruction executed via at least one processor; At least one of the above commands, A command to classify the above plurality of charging and discharging units into a first group and a second group; A command to set the first group to a charge mode and the second group to a discharge mode; and A control device of a battery charging / discharging system, comprising a command for controlling the charging / discharging units included in the first group to be simultaneously supplied with power from the power supply device through the power transmission device and charged.

10. In claim 9, The command to control the above charging is, A control device of a battery charging / discharging system, comprising a command for controlling charging / discharging units included in the first group to be charged simultaneously according to the same charging profile.

11. In claim 9, At least one of the above commands, A control device of a battery charging / discharging system, further comprising a command for controlling the charging / discharging units included in the second group to discharge simultaneously according to the same discharge profile.

12. In claim 9, At least one of the above commands, A control device of a battery charging / discharging system, further comprising a command for adjusting power of the power supply device output to the power transmission device side in response to power discharged from the second group.

13. In claim 9, At least one of the above commands, A control device of a battery charging / discharging system, further comprising a command for switching the first group to a discharging mode and switching the second group to a charging mode when the charging process of the first group is completed and the discharging process of the second group is completed.

14. A method for controlling a battery charging / discharging system, comprising a plurality of charging / discharging units, a power supply unit, and a power transmission device electrically connecting the power supply unit and the plurality of charging / discharging units, A step of classifying the above plurality of charging and discharging units into a first group and a second group; A step of setting the first group to a charge mode and setting the second group to a discharge mode; and A method for controlling a battery charging and discharging system, comprising a step of controlling the charging and discharging units included in the first group to be simultaneously supplied with power from the power supply device through the power transmission device and charged.

15. In claim 14, The step of controlling the charging as above is, A method for controlling a battery charging and discharging system, comprising a step of controlling charging and discharging units included in the first group to be charged simultaneously according to the same charging profile.

16. In claim 14, A control method for a battery charging / discharging system, further comprising a step of controlling the charging / discharging units included in the second group to discharge simultaneously according to the same discharge profile.

17. In claim 14, A method for controlling a battery charging and discharging system, further comprising the step of adjusting power of the power supply device output to the power transmission device side in response to power discharged from the second group.

18. In claim 14, A control method for a battery charging / discharging system, further comprising the step of switching the first group to a discharging mode and switching the second group to a charging mode when the charging process of the first group is completed and the discharging process of the second group is completed.

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