Battery charging control device and method, and battery system including the same

Abstract

The battery charging control device and method according to the embodiment of the present invention, and the battery system including the same, charges the battery with a predefined charging current magnitude belonging to a corresponding section according to charging state information of the battery to be charged, and if the battery voltage reaches a predefined threshold during charging, charges the battery by adjusting the charging current magnitude downward to the next section, and charges the battery by determining the charging current magnitude for each section based on real-time voltage information rather than charging state information of the battery until the battery is fully charged, thereby preventing lithium deposition and battery deterioration due to rapid charging and shortening the charging time.

Description

【Technical Field】 【0001】 This application claims the benefit of the filing date of Korean Patent Application No. 10-2022-0152598, filed with the Korean Intellectual Property Office on November 15, 2022, and all of the content disclosed in the document of the Korean patent application is incorporated herein. 【0002】 The present invention relates to a battery charging control device and method, and a battery system including the same. More specifically, the present invention relates to a battery charging control device and method for controlling the magnitude of a charging current for charging a battery based on battery state-of-charge information and battery voltage values, and a battery system including the same. 【Background Art】 【0003】 Due to the depletion of fossil fuels, the price of energy sources has increased, and the concern about environmental pollution has rapidly increased. As a result, the demand for secondary batteries as an environmentally friendly alternative energy source is rapidly increasing. 【0004】 Such secondary batteries can be repeatedly charged and regenerated, and are applied to large industrial fields such as automobiles, robots, and energy storage devices, as well as small devices such as mobile phones and notebook computers, as a countermeasure to current environmental regulations and high crude oil prices. 【0005】 Among secondary batteries, lithium secondary batteries have attracted attention due to advantages such as almost no memory effect, low self-discharge rate, and high energy density compared to nickel-based secondary batteries. 【0006】 Conventionally, in response to the increasing use frequency of lithium batteries, a rapid charging technology for quickly charging the battery has been introduced. 【0007】 Conventional rapid charging technology uses a rapid charging map to obtain information on the magnitude of a charging current for rapid charging based on the temperature and state of charge (SOC) of the battery to be charged, and rapidly charges the battery. 【0008】 However, conventional fast-charging maps do not take into account the voltage state of the battery being charged, which has the disadvantage of leading to battery degradation and reduced efficiency. [Overview of the Initiative] [Problems that the invention aims to solve] 【0009】 The objective of the present invention, in order to solve the above-mentioned problems, is to provide a battery charging control device. 【0010】 Another objective of the present invention, in order to solve the problems described above, is to provide a battery charging control method. 【0011】 Another objective of the present invention, in order to solve the problems described above, is to provide a battery charging system. [Means for solving the problem] 【0012】 A battery charging control device for controlling the charging of a battery according to one embodiment of the present invention for achieving the above objective includes a memory and a processor that executes at least one instruction stored in the memory, wherein the at least one instruction includes an instruction to monitor the State of Charge (SOC) of a battery to be charged, an instruction to cause the battery to be charged by a predefined charging current value based on the State of Charge (SOC) of the battery, an instruction to determine the charging current value based on the voltage value of the battery regardless of the State of Charge (SOC) when the voltage value of the battery reaches a pre-set threshold during the charging process of the battery, and an instruction to cause the battery to be charged by the determined charging current value. 【0013】 In this case, the instruction to charge the battery with the above-described predefined charging current value may include an instruction to check the Nth interval to which the State of Charge (SOC) of the battery belongs, and an instruction to charge the battery with the charging current value stored corresponding to the Nth interval. 【0014】 Here, the value of the charging current corresponding to the Nth interval can be defined as being smaller than the value of the charging current corresponding to the N-1th interval. 【0015】 On the other hand, the command for determining the charging current value may include a command for monitoring whether the voltage value of the battery reaches a voltage threshold value stored in relation to the Nth interval. 【0016】 In this case, the instruction for determining the charging current value may include an instruction that, when the voltage value of the battery reaches the voltage threshold corresponding to the Nth interval, determines the charging current value stored in the N+1th interval as the charging current value for charging the battery. 【0017】 Here, the voltage threshold corresponding to the Nth interval can be defined as a value greater than the voltage threshold corresponding to the N-1th interval. 【0018】 On the other hand, at least one instruction may further include an instruction to control the battery to terminate charging when the battery voltage value reaches the voltage threshold for the last interval. 【0019】 A battery charging control method for controlling the charging of a battery according to another embodiment of the present invention for achieving the above objective includes the steps of: monitoring the State of Charge (SOC) of a battery to be charged; ensuring that the battery is charged by a predefined charging current value based on the State of Charge (SOC) of the battery; determining the charging current value based on the voltage value of the battery if the voltage value of the battery reaches a pre-set threshold during the charging process; and ensuring that the battery is charged by the determined charging current value. 【0020】 In this case, the step of ensuring that the battery is charged by the above-defined charging current value may include the step of confirming the Nth interval to which the State of Charge (SOC) of the battery belongs, and the step of ensuring that the battery is charged by the charging current value stored in correspondence with the above-Nth interval. 【0021】 Here, the value of the charging current corresponding to the Nth interval can be defined as being smaller than the value of the charging current corresponding to the N-1th interval. 【0022】 On the other hand, the step of determining the charging current value may include monitoring whether the voltage value of the battery reaches a voltage threshold value stored in accordance with the Nth interval. 【0023】 In this case, the instruction to determine the charging current value may include the step of determining the charging current value stored in the N+1 interval as the charging current value for charging the battery when the voltage value of the battery reaches the voltage threshold corresponding to the Nth interval. 【0024】 Here, the voltage threshold corresponding to the Nth interval can be defined as a value greater than the voltage threshold corresponding to the N-1th interval. 【0025】 On the other hand, the system may further include a step of controlling the charging of the battery to terminate when the battery voltage value reaches the voltage threshold for the final interval. 【0026】 A battery charging system for controlling the charging of a battery according to another embodiment of the present invention for achieving the above object includes a battery, a charging device that applies a charging current to the battery to charge the battery, and a battery charging control device that controls the magnitude of the charging current provided by the charging device. The battery charging control device monitors the state of charge information (State Of Charge, SOC) of the battery to be charged, controls the battery to be charged according to a predefined charging current value based on the state of charge information (SOC) of the battery, determines the charging current value based on the voltage value of the battery when the voltage value of the battery reaches a preset threshold value in the charging process of the battery, and controls the battery to be charged according to the charging current value. 【0027】 At this time, the battery charging control device can confirm the Nth section to which the SOC of the battery belongs, and control the charging device so that the battery is charged with the charging current value stored corresponding to the Nth section. 【0028】 Here, the value of the charging current corresponding to the Nth section can be defined as a value smaller than the value of the charging current corresponding to the N-1th section. 【0029】 On the other hand, the battery charging control device can monitor whether the voltage value of the battery reaches the voltage threshold value stored corresponding to the Nth section. 【0030】 At this time, if the voltage value of the battery reaches the voltage threshold value corresponding to the Nth section, the battery charging control device can determine the charging current value stored corresponding to the N+1th section as the charging current value for battery charging. 【0031】 [[ID=第十九]]ID=19]] Here, the voltage threshold value corresponding to the Nth section can be defined as a value larger than the voltage threshold value corresponding to the N-1th section. 【0032】 On the other hand, the battery charging control device can control the charging device to terminate charging of the battery when the battery voltage value reaches the voltage threshold for the last interval. [Effects of the Invention] 【0033】 The battery charging control device and method according to an embodiment of the present invention, and the battery system including the same, charge the battery with a predefined charging current of a certain magnitude belonging to the relevant section based on the charge state information of the battery to be charged, and if the battery voltage reaches a predefined threshold during charging, the charging current is reduced and adjusted to the magnitude of the charging current for the next section to charge the battery, and the magnitude of the charging current for each section is determined based on real-time voltage information rather than the battery's charge state information until the battery is fully charged, thereby preventing lithium deposition and battery degradation due to rapid charging, and shortening the charging time. [Brief explanation of the drawing] 【0034】 [Figure 1] This is a block diagram of a battery system to which embodiments of the present invention can be applied. [Figure 2] This is a block diagram of a battery charging system according to an embodiment of the present invention. [Figure 3] This is a block diagram of a battery charging control device according to an embodiment of the present invention. [Figure 4] This is a flowchart illustrating a battery charging control method operated by a processor in a battery charging control device according to an embodiment of the present invention. [Figure 5] This is a table summarizing the battery status information within the battery charging control device, which is part of the battery charging control method according to an embodiment of the present invention. [Figure 6] This graph illustrates a battery charging control method based on the table shown in Figure 5, according to an embodiment of the present invention. [Figure 7] This graph illustrates a comparative example of the battery charging control method according to the present invention. [Modes for carrying out the invention] 【0035】 The present invention can be modified in various ways and has many embodiments; therefore, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this should be understood not as limiting the present invention to specific embodiments, but rather as including all modifications, equivalents, or substitutions that fall within the spirit and technical scope of the present invention. Similar reference numerals are used for similar components in the description of each drawing. 【0036】 Terms such as First, Second, A, B, etc., may be used to describe various components, but the components should not be limited by such terms. The terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the First component may be named the Second component, and similarly, the Second component may be named the First component. The term "and / or" includes a combination of multiple related items or one of multiple related items. 【0037】 When it is stated that one component is "linked" or "connected" to another component, it should be understood that this may mean that it is directly linked or connected to that other component, but that there may also be another component in between. Conversely, when it is stated that one component is "directly linked" or "directly connected" to another component, it should be understood that there is no other component in between. 【0038】 The terms used in this application are used solely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless they are clearly different in context. In this application, terms such as “includes” or “having” are intended to specify the presence of features, figures, steps, actions, components, parts, or combinations thereof as described in the specification, and should not be understood to preemptively exclude the presence or possibility of adding one or more other features, figures, steps, actions, components, parts, or combinations thereof. 【0039】 Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those generally understood by a person of ordinary skill in the art to which this invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not as ideal or overly formal unless explicitly defined herein. 【0040】 Figure 1 is a block diagram of a battery system to which embodiments of the present invention can be applied. 【0041】 Referring to Figure 1, a battery can consist of multiple battery modules or cells connected in series. Each battery cell or module can be connected to a load via positive and negative terminals to perform charging and discharging operations. The most commonly used battery cell is the lithium-ion (Li-Ion) battery cell. 【0042】 Such battery cells or battery modules can be integrated with a Battery Management System (BMS). 【0043】 A battery management system (BMS) monitors the current, voltage, and temperature of each battery cell or module under its control, and can control charging and discharging by calculating the State of Charge (SOC) based on the monitoring results. Here, SOC (State of Charge) is expressed as a percentage [%] of the battery's current charge level, and SOH (State of Health) is expressed as a percentage [%] of the battery's current degradation level. 【0044】 In this way, a battery management system (BMS) can monitor battery cells, read cell voltages, and transmit them to other systems connected to the battery. 【0045】 Furthermore, a battery management system (BMS) can transmit status data from at least one electrical component of the battery system to other systems by monitoring it. For this purpose, a BMS may include a communication module for communicating with other systems within the device included in the battery system. 【0046】 The communication module of the Battery Management System (BMS) can communicate with other systems within the device using CAN (Controller Area Network). In this case, the electrical components, modules, or systems within the Battery Management System (BMS) are connected to each other via the CAN bus. This allows the Battery Management System (BMS) to remotely transmit status data acquired through monitoring of the battery pack or module and at least one electrical component constituting the Battery Management System (BMS) to other systems using CAN communication. 【0047】 On the other hand, a battery management system (BMS) evenly balances the charge of battery cells to extend the lifespan of the battery system. 【0048】 To perform such operations, a battery management system (BMS) can include a variety of components such as fuses, current sensing elements, thermistors, switches, and balancers, but in most cases, it also includes an MCU (Micro Controller Unit) or BMIC (Battery Monitoring Integrated Chip) to control these components in conjunction. 【0049】 On the other hand, the battery charging system according to an embodiment of the present invention can be provided as a component of a battery management system (BMS) and can control rapid charging of a battery. 【0050】 Hereinafter, preferred embodiments of the battery charging system according to the present invention will be described in detail with reference to the accompanying drawings. 【0051】 Figure 2 is a block diagram of a battery charging system according to an embodiment of the present invention. 【0052】 Referring to Figure 2, the battery charging system according to an embodiment of the present invention may also be a system for controlling rapid charging of a battery. 【0053】 More specifically, the battery charging system may include a battery 1000, a charging device 3000, and a battery charging control device 5000. 【0054】 The battery 1000 can be provided in a configuration in which multiple battery cells are connected. The battery 1000 can be connected to a charging device 3000, which will be described later, and charged by a charging current applied from the charging device 3000. Here, the charging current can be adjusted by a battery charging control device 5000, which will be described later, to a magnitude that prevents lithium deposition, taking into account the charge state information (State of Charge, SOC) of the battery 1000. 【0055】 The charging device 3000 is electrically connected to the battery 1000 and can charge the battery 1000. More specifically, the charging device 3000 is electrically connected to the positive (+) and negative (-) terminals of the battery 1000 and can charge the battery 1000. 【0056】 On the other hand, the charging device 3000 can be connected to the battery charging control device 5000. According to the embodiment, the charging device 3000 can be connected to the battery charging control device 5000 by CAN communication. As a result, the charging device 3000 can provide a charging current to the battery 1000 based on the charging current value received from the battery charging control device 5000, as described above. In other words, the charging device 3000 can charge the battery 1000 by applying a charging current of a magnitude determined by the battery charging control device 5000 to the battery 1000. 【0057】 The battery charge control device 5000 can receive at least one state information of the battery 1000 and monitor the battery 1000. According to the embodiment, the state information may include at least one of the following: charge state information (SOC), voltage (V), and current (I) of the battery 1000. 【0058】 The battery charge control device 5000 can include information on the charging current value provided for each section of the battery 1000's charge state information. This allows the battery charge control device 5000, as described above, to be connected to the charging device 3000, to check the charging current value in the section to which the battery 1000's charge state information belongs, and transmit it to the charging device 3000. 【0059】 The battery charge control device 5000 can adjust the charging current value to reduce it as the battery charging progresses in order to prevent lithium deposition. In other words, as the state of charge (SOC) increases, the charging current value can be reduced. Therefore, the battery charge control device 5000 according to the embodiment of the present invention controls the value of the charging current corresponding to the real-time charge state (SOC) of the battery and provides the battery 1000 with a charging current of the size adjusted by the charging device 3000, thereby preventing lithium deposition and enabling stable charging of the battery. 【0060】 On the other hand, the battery charge control device 5000 may include battery voltage threshold information provided for each interval of the battery's charge state information. Here, the battery voltage threshold may be information set to prevent battery degradation. 【0061】 According to the embodiment, the battery charge control device 5000 can check the real-time voltage state of the battery 1000 obtained by monitoring while the battery 1000 is being charged by the charging device 3000. As a result, when the voltage value of the battery 1000 reaches a pre-set voltage threshold, the battery charge control device 5000 can determine the charging current value based on the voltage value of the battery, regardless of the state of charge (SOC). 【0062】 The charging current control method of the battery charging control device 5000 will be explained in more detail later when describing the battery charging control method. 【0063】 Figure 3 is a block diagram of a battery charging control device according to an embodiment of the present invention. 【0064】 Referring to Figure 3, the battery charging control device 5000 can be described in more detail by its configuration. The battery charging control device 5000 may include a memory 100, a processor 200, a transceiver 300, an input interface device 400, an output interface device 500, and a storage device 600. 【0065】 According to the embodiment, the respective components 100, 200, 300, 400, 500, and 600 included in the control unit 4000 are connected by a bus 700 and can communicate with each other. 【0066】 Of the above configurations 100, 200, 300, 400, 500, and 600, the memory 100 and the storage device 600 can be composed of at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory 100 and the storage device 600 can be composed of at least one of a read-only memory (ROM) and a random access memory (RAM). 【0067】 Among these, memory 100 may contain at least one instruction executed by processor 200. 【0068】 According to the embodiment, the at least one instruction includes an instruction to monitor the State of Charge (SOC) of a battery to be charged, an instruction to charge the battery with a predefined charging current value based on the State of Charge (SOC) of the battery, an instruction to determine the charging current value based on the voltage of the battery, regardless of the State of Charge (SOC), when the voltage of the battery reaches a pre-set threshold during the charging process, and an instruction to charge the battery with the determined charging current value. 【0069】 In this case, the instruction to charge the battery with the above-described predefined charging current value may include an instruction to check the Nth interval to which the State of Charge (SOC) of the battery belongs, and an instruction to charge the battery with the charging current value stored corresponding to the Nth interval. 【0070】 Here, the value of the charging current corresponding to the Nth interval can be defined as being smaller than the value of the charging current corresponding to the N-1th interval. 【0071】 On the other hand, the command for determining the charging current value may include a command for monitoring whether the voltage value of the battery reaches a voltage threshold value stored in relation to the Nth interval. 【0072】 In this case, the instruction for determining the charging current value may include an instruction that, when the voltage value of the battery reaches the voltage threshold corresponding to the Nth interval, determines the charging current value stored in the N+1th interval as the charging current value for charging the battery. 【0073】 Here, the voltage threshold corresponding to the Nth interval can be defined as a value greater than the voltage threshold corresponding to the N-1th interval. 【0074】 Furthermore, at least one instruction may further include an instruction to control the battery to terminate charging when the battery voltage reaches the voltage threshold for the last interval. 【0075】 On the other hand, processor 200 can mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which the method according to the embodiment of the present invention is performed. 【0076】 As described above, the processor 200 can execute at least one program command stored in memory 100. 【0077】 The above describes a battery charging system including a battery charging control device according to an embodiment of the present invention. Below, the battery charging control method performed by the processor operation of the battery charging control device according to an embodiment of the present invention will be described in more detail. 【0078】 Figure 4 is a flowchart illustrating a battery charging control method operated by a processor in a battery charging control device according to an embodiment of the present invention. 【0079】 Referring to Figure 4, the battery charge control device 5000 according to an embodiment of the present invention can confirm the charge state information (SOC) of the battery 1000 through the operation of the processor 200 (S1000). 【0080】 According to one embodiment, the battery charging control device 5000 can monitor the state information of the battery 1000 in real time and acquire and confirm the state of charge (SOC). 【0081】 In another embodiment, the battery charge control device 5000 can receive status information of the battery 1000 in real time from a separate monitoring device (not shown). This allows the battery charge control device 5000 to check the state of charge (SOC) of the battery 1000 from the status information received from the monitoring device. 【0082】 Subsequently, the battery charging control device 5000 can check the section to which the charge state information (SOC) belongs and confirm the charging current value corresponding to that section (S2000). 【0083】 Subsequently, the battery charging control device 5000 can transmit the confirmed charging current value to the charging device 3000 (S3000). This allows the charging device 3000 to apply a charging current of a magnitude corresponding to the charging current value to the battery 1000, thereby charging the battery 1000. 【0084】 Subsequently, the battery charging control device 5000 can confirm the voltage value obtained through real-time monitoring of the battery 1000 while the battery 1000 is being charged with the charging current value. 【0085】 In the embodiment, when the voltage value of the battery 1000 reaches a voltage threshold corresponding to the Nth interval, which is a State of Charge (SOC) interval for which the charging current value is set (S4000), the battery charging control device 5000 can adjust the confirmed value of the charging current. For example, the battery charging control device 5000 can retransmit the charging current value corresponding to the N+1th interval of the State of Charge (SOC) to the charging device 3000 (S5000). This allows the magnitude of the charging current of the charging device 3000 to be changed from the charging current value corresponding to the Nth interval to the charging current value corresponding to the N+1th interval. 【0086】 In this case, as described above, the magnitude of the charging current can decrease as the magnitude of the state of charge (SOC) increases. As a result, when the voltage value of the battery 1000 reaches a voltage threshold corresponding to the Nth interval, which is the SOC interval for which the charging current value is set, the battery charging control device 5000 can reduce and adjust the magnitude of the charging current of the charging device. 【0087】 Subsequently, the battery charging control device 5000 can determine the charging current value based on the battery's voltage state, without considering changes in the battery's state of charge (SOC), until the battery 1000 is fully charged, and transmit the determined charging current value to the charging device 3000 (S6000). 【0088】 According to the embodiment, when determining the charging current value, the battery charging control device 5000 can use pre-set charging current values ​​and voltage threshold information for each interval based on the battery's state of charge (SOC). For example, the above information can be provided in the form of a table-formatted charging map, as shown in Figure 5 below. 【0089】 Figure 5 is a table summarizing the battery state information within the battery charging control device in an embodiment of the present invention, and Figure 6 is a graph illustrating the battery charging control method based on the table in Figure 5. 【0090】 Referring to Figure 5, in the battery charging control device according to an embodiment of the present invention, the charging map in which the charging current value and voltage threshold value of the battery are set for each interval based on the state of charge (SOC) information can be pre-set. 【0091】 According to the embodiment, in a first interval where the state of charge (SOC) is between 10% and less than 20%, the charging current can be set to 250A, and the voltage threshold at this time can be set to 3.5V. 【0092】 Furthermore, in the second interval where the State of Charge (SOC) is between 20% and less than 30%, the charging current can be set to 200A, and the voltage threshold at this time can be set to 3.6V. 【0093】 In the third interval, where the State of Charge (SOC) is between 30% and less than 50%, the charging current can be set to 150A, and the voltage threshold can be set to 3.8V. 【0094】 In the fourth interval, where the State of Charge (SOC) is between 50% and less than 70%, the charging current can be set to 100A, and the voltage threshold can be set to 4.0V. 【0095】 Finally, in the fifth interval where the State of Charge (SOC) is between 70% and less than 90%, the charging current can be set to 75A, and the voltage threshold can be set to 4.1V. 【0096】 In short, the magnitude of the charging current value for charging battery 1000 can be controlled in intervals based on the state of charge (SOC) information and voltage threshold. 【0097】 According to the embodiment, the charging current value can be reduced as the interval increases in order to prevent lithium platting that may occur on the negative electrode surface of the battery during rapid charging of the battery, as described above. 【0098】 On the other hand, the voltage threshold can be increased as the interval increases in order to prevent battery degradation. 【0099】 As a result, the battery charge control device 5000 according to the embodiment of the present invention, as shown in Figure 6, sets a charging current value to prevent lithium deposition in a specific interval (the Nth interval) based on the real-time charge state information (SOC) of the battery, monitors the real-time voltage measurement value of the battery, and if the voltage reaches a predefined threshold in the relevant interval (the Nth interval), it can adjust the previously set charging current value to the charging current value in the next interval (the N+1th interval) in order to prevent battery degradation. 【0100】 Subsequently, the battery charging control device 5000 according to the embodiment of the present invention can determine the charging current value based on the battery voltage state without considering changes in the charge state information (SOC) of the battery 1000, as shown in step S6000 of Figure 4, and transmit the determined charging current value to the charging device 3000. 【0101】 For example, to explain more specifically, if the real-time charge state information (SOC) of the battery 1000 is 15% and belongs to a first interval (P1), the battery charge control device can determine 250A, which belongs to the first interval, as the charging current value for the battery and transmit it to the charging device 3000. As a result, the battery 1000 can be charged with a charging current of 250A. 【0102】 Subsequently, the state information of the battery 1000 being charged with a charging current of 250A can be monitored. At this time, if the voltage value of the battery 1000 is 3.4V and below the voltage threshold in the first section, and the state of charge (SOC) reaches 20% and enters the second section (P2), the battery charge control device 5000 can send a signal to the charging device 3000 to change the charging current value so that the battery 1000 is charged with a charging current value of 200A, which corresponds to the second section. As a result, the battery 1000 can be charged with a charging current of 200A. 【0103】 Subsequently, the state information of the battery 1000 being charged with a charging current of 200A can be monitored. At this time, if the voltage value of the battery 1000 is 3.5V and below the voltage threshold in the second section, and the state of charge (SOC) reaches 30% and enters the third section (P3), the battery charge control device 5000 can send a signal to the charging device 3000 to change the charging current value so that the battery 1000 is charged with a charging current value of 150A, which corresponds to the third section. As a result, the battery 1000 can be charged with a charging current of 150A. 【0104】 Subsequently, the state information of the battery 1000 being charged with a charging current of 150A can be monitored. At this time, if the voltage value of the battery 1000 reaches 3.8V, which is the voltage threshold for the third interval, while the state of charge (SOC) remains at 45% and is still in the third interval (P4), the battery charge control device 5000 can send a signal to the charging device 3000 to change the charging current value so that the battery 1000 is charged with a charging current value of 100A, which is the charging current value corresponding to the fourth interval. As a result, the battery 1000 can be charged with a charging current of 100A. 【0105】 Subsequently, the state information of the battery 1000 being charged with a charging current of 100A can be monitored. At this time, if the voltage value of the battery 1000 is 3.9V and is still below the voltage threshold in the fourth interval, while the state of charge (SOC) increases to 75% and corresponds to the fifth interval (P5), the battery charge control device 5000 can ensure that the battery 1000 is maintained and charged at a charging current value of 100A, which is the charging current value belonging to the fourth interval, even though the state of charge (SOC) corresponds to the fifth interval. 【0106】 Subsequently, monitoring of the state information of the battery 1000 being charged with a charging current of 100A proceeds, and when the voltage value of the battery 1000 reaches 4.0V and enters the fifth section (P6), the battery charging control device 5000 can send a signal to the charging device 3000 to change the charging current value, regardless of the charging state information (SOC), so that the battery 1000 is charged with a charging current value of 75A, which corresponds to the fifth section. As a result, the battery 1000 can be charged with a charging current of 75A. 【0107】 Subsequently, monitoring of the battery 1000's status information while it is being charged with a charging current of 75A continues. When the voltage value of the battery 1000 reaches 4.1V, which is the voltage threshold for the fifth and final section (P7), the battery charge control device 5000 can send a charge completion signal to the charging device 3000. This completes the charging of the battery 1000. 【0108】 In other words, the battery charge control device 5000 can determine the charge current value in steps based on the charge state information (SOC) of the battery 1000 if the battery voltage value does not reach a predefined threshold for each interval, as in the case of P1 to P3. 【0109】 On the other hand, the battery charge control unit (SOC), as in P4, can change the charging current value based on the voltage value of battery 1000 if there is no interval change in the battery's charge state information but the battery's voltage value reaches a predefined threshold for that interval. Furthermore, in subsequent intervals, the battery charge control unit (SOC), as in P5 and P6, can determine the charging current value stepwise based on the voltage value of battery 1000 without considering the charge state information (SOC) of battery 1000, and as in P7, can transmit a charging completion signal when the voltage value of battery 1000 reaches the threshold for the last interval. 【0110】 Figure 7 is a graph illustrating a comparative example of the battery charging control method according to the present invention. 【0111】 Referring to Figure 7, if the battery charge control device 5000 according to the comparative example of the present invention temporarily reduces and adjusts the charge current value only in the relevant section (the Nth section) to prevent battery degradation and controls the charge current of the charge device 3000, it may become impossible to apply a charge current equivalent to area A, which could increase the charging time and reduce the charging efficiency. 【0112】 On the other hand, the battery charge control device 5000 according to an embodiment of the present invention can maintain the charging current value without decreasing until a predefined voltage threshold is reached for each section by determining the value of the charging current for each section based on the voltage value of the battery 1000 after adjusting the charging current to be reduced. As a result, the battery charge control device 5000 according to an embodiment of the present invention can prevent lithium deposition and battery degradation due to rapid charging, and shorten the charging time, by compensating for the charging loss of area A in the Nth section caused by the adjustment of the charging current value in the State of Charge (SOC) section after the Nth section, as shown in A'. 【0113】 The battery charging control device and method according to embodiments of the present invention, as well as a battery system including the same, have been described above. 【0114】 The battery charging control device and method according to an embodiment of the present invention, and the battery system including the same, charge the battery with a predefined charging current of a certain magnitude belonging to the relevant section based on the charge state information of the battery to be charged, and if the battery voltage reaches a predefined threshold during charging, the charging current is reduced and adjusted to the magnitude of the charging current for the next section to charge the battery, and the magnitude of the charging current for each section is determined based on real-time voltage information rather than the battery's charge state information until the battery is fully charged, thereby preventing lithium deposition and battery degradation due to rapid charging, and shortening the charging time. 【0115】 The operation of the methods according to the embodiments and experimental examples of the present invention can be embodied as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes all types of recording devices that store data that can be read by a computer system. Furthermore, computer-readable recording media can be distributed across networked computer systems, allowing computer-readable programs or code to be stored and executed in a distributed manner. 【0116】 Furthermore, computer-readable recording media can include hardware devices specially configured to store and execute program instructions, such as ROM, RAM, and flash memory. Program instructions can include not only machine code, such as that produced by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. 【0117】 Some aspects of the present invention have been described in the context of apparatus, but they can also be described by corresponding methods, where a block or apparatus corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method can be described by corresponding blocks or items or features of corresponding apparatus. Some or all of the method steps can be carried out by (or using) hardware devices such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, one or more of the most important method steps can be carried out by such devices. 【0118】 While preferred embodiments of the present invention have been described above with reference to the present invention, those skilled in the art will understand that the present invention can be modified and altered in various ways without departing from the spirit and scope of the invention as set forth in the following claims. [Item 1] A battery charging control device that controls the charging of a battery, memory; and Includes a processor that executes at least one instruction stored in the memory, The at least one instruction is, A command to monitor the State of Charge (SOC) information of the battery being charged. An instruction to cause the battery to be charged by a predefined charging current value based on the charge state information (SOC) of the battery, A command to determine the charging current value based on the battery voltage value, regardless of the state of charge (SOC), when the battery voltage value reaches a previously set threshold during the charging process of the battery, and A battery charging control device that includes a command to cause the battery to be charged by the determined charging current value. [Item 2] The instruction that causes the battery to be charged by the aforementioned predefined charging current value is: An instruction to check the Nth section to which the SOC of the aforementioned battery belongs, and A battery charging control device according to item 1, which includes an instruction to cause the battery to be charged with a charging current value stored corresponding to the interval N. [Item 3] The value of the charging current corresponding to the aforementioned interval N is: A battery charging control device as described in item 2, defined as a value smaller than the value of the charging current corresponding to the N-1 interval. [Item 4] The command to determine the charging current value is: The battery charging control device according to item 2, which includes an instruction to monitor whether the voltage value of the battery reaches a voltage threshold stored corresponding to the N interval. [Item 5] The command to determine the charging current value is: The battery charging control device according to item 4, which includes an instruction to determine the charging current value stored in the N+1th interval as the charging current value for charging the battery when the voltage value of the battery reaches the voltage threshold corresponding to the Nth interval. [Item 6] The voltage threshold corresponding to the interval N is The battery charging control device described in item 5, defined as a value greater than the voltage threshold corresponding to the N-1 interval. [Item 7] The at least one instruction is, The battery charging control device according to item 1, further comprising a command to control the battery to terminate charging when the battery voltage value reaches a voltage threshold for the last interval. [Item 8] A battery charging control method for controlling the charging of a battery, A step to monitor the State of Charge (SOC) of the battery to be charged; A step of ensuring that the battery is charged by a predefined charging current value based on the charge state information (SOC) of the battery; A step of determining the charging current value based on the voltage value of the battery when the voltage value of the battery reaches a previously set threshold during the charging process of the battery; and A battery charging control method comprising the step of ensuring that the battery is charged by the determined charging current value. [Item 9] The step of ensuring that the battery is charged by the aforementioned predefined charging current value is: A step of confirming the Nth interval to which the SOC of the aforementioned battery belongs; and A battery charging control method according to item 8, comprising the step of causing the battery to be charged with a charging current value stored corresponding to the interval N. [Item 10] The value of the charging current corresponding to the Nth interval is: A battery charging control method as described in item 9, defined as a value smaller than the value of the charging current corresponding to the N-1 interval. [Item 11] The step of determining the charging current value is: The battery charging control method according to item 9, comprising the step of monitoring whether the voltage value of the battery reaches a voltage threshold stored corresponding to the interval N. [Item 12] The command to determine the charging current value is: The battery charging control method according to item 11, comprising the step of determining the charging current value stored in the N+1th interval as the charging current value for charging the battery when the voltage value of the battery reaches the voltage threshold corresponding to the N interval. [Item 13] The voltage threshold corresponding to the Nth interval is The battery charging control method described in item 12, defined as a value greater than the voltage threshold corresponding to the N-1 interval. [Item 14] The battery charging control method according to item 8, further comprising the step of controlling the battery to terminate charging when the battery voltage value reaches a voltage threshold for the last interval. [Item 15] A battery charging system that controls the charging of a battery, battery; A charging device that charges the battery by applying a charging current to it; and Includes a battery charging control device that controls the magnitude of the charging current provided by the charging device, The aforementioned battery charging control device is The charge status information (State of Charge, SOC) of the battery to be charged is monitored. Based on the charge state information (SOC) of the battery, the battery is controlled to be charged by a predefined charging current value. If the voltage value of the battery reaches a previously set threshold during the charging process of the battery, the charging current value is determined based on the voltage value of the battery. A battery charging system that controls the charging of the battery according to the aforementioned charging current value. [Item 16] The aforementioned battery charging control device is Check the Nth interval to which the State of Charge (SOC) of the aforementioned battery belongs, The battery charging system according to item 15, which controls the charging device so that the battery is charged with a charging current value stored corresponding to the interval N. [Item 17] The value of the charging current corresponding to the Nth interval is: A battery charging system as described in item 16, defined as a value smaller than the value of the charging current corresponding to the N-1 interval. [Item 18] The aforementioned battery charging control device is The battery charging system according to item 16, which monitors whether the voltage value of the battery reaches a voltage threshold value stored corresponding to the interval N. [Item 19] The aforementioned battery charging control device is The battery charging system according to item 18, wherein when the voltage value of the battery reaches the voltage threshold corresponding to the Nth interval, the charging current value stored corresponding to the N+1th interval is determined as the charging current value for charging the battery. [Item 20] The voltage threshold corresponding to the Nth interval is The battery charging system described in item 19, defined as a value greater than the voltage threshold corresponding to the (N-1)th interval. [Item 21] The aforementioned battery charging control device is The battery charging system according to item 15, wherein the charging device is controlled to terminate charging of the battery when the battery voltage value reaches the voltage threshold for the last interval. [Explanation of symbols] 【0119】 1000:Battery 3000: Charging device 5000: Battery charging control device 100: Memory 200: Processor 300: Transceiver 400: Input Interface Device 500: Output Interface Device 600: Storage device 700: Bus

Claims

[Claim 1] A battery charging control device that controls the charging of a battery, memory; and Includes a processor that executes at least one instruction stored in the memory, The at least one instruction is, A command to monitor the State of Control (SOC) of the aforementioned battery, An instruction to confirm the Nth section to which the SOC of the aforementioned battery belongs, An instruction to charge the battery with a first charging current value which is the charging current corresponding to the interval N, If the voltage value of the battery does not reach the voltage threshold corresponding to the N interval while the SOC of the battery being charged is maintained in the N interval, the battery is continuously charged by the first charging current value until the SOC enters the N+1 interval, and when the SOC enters the N+1 interval, the battery is charged by the second charging current value, which is the charging current value stored corresponding to the N+1 interval. A battery charging control device that, when the voltage value of the battery reaches the voltage threshold corresponding to the N interval while the SOC of the battery being charged is maintained in the N interval, determines a second charging current value, which is a charging current value stored for the N+1 interval, based on the voltage value of the battery, regardless of the SOC, and includes a command to charge the battery by the determined second charging current value. [Claim 2] The value of the charging current corresponding to the above interval N is: The battery charging control device according to claim 1, defined as a value smaller than the value of the charging current corresponding to the (N-1)th interval. [Claim 3] The command for determining the second charging current value is: The battery charging control device according to claim 1, comprising a command to monitor whether the voltage value of the battery reaches the voltage threshold stored corresponding to the N interval. [Claim 4] The voltage threshold corresponding to the interval N is The battery charging control device according to claim 1, defined as a value greater than the voltage threshold corresponding to the (N-1)th interval. [Claim 5] The at least one instruction is, The battery charging control device according to claim 1, further comprising a command to control the battery to terminate charging when the voltage value of the battery reaches a voltage threshold for the last interval. [Claim 6] A battery charging control method for controlling the charging of a battery, A step of monitoring the state of charge (SOC) of the aforementioned battery; A step of confirming the Nth section to which the SOC of the aforementioned battery belongs; A step of charging the battery with a first charging current value which is a charging current corresponding to the interval N; If the voltage value of the battery does not reach a voltage threshold corresponding to the N interval while the SOC of the battery being charged is maintained in the N interval, the battery is continuously charged by the first charging current value until the SOC enters the N+1 interval, and once the SOC enters the N+1 interval, the battery is charged by the second charging current value, which is the charging current value stored corresponding to the N+1 interval; A battery charging control method comprising the steps of: if the voltage value of the battery reaches the voltage threshold corresponding to the N interval while the SOC of the battery being charged is maintained in the N interval, regardless of the SOC, determining a second charging current value which is a charging current value stored corresponding to the N+1 interval based on the voltage value of the battery, and charging the battery with the determined second charging current value. [Claim 7] The value of the charging current corresponding to the above interval N is: The battery charging control method according to claim 6, defined as a value smaller than the value of the charging current corresponding to the N-1 interval. [Claim 8] The step of determining the second charging current value is: The battery charging control method according to claim 6, comprising the step of monitoring whether the voltage value of the battery reaches the voltage threshold stored corresponding to the interval N. [Claim 9] The voltage threshold corresponding to the interval N is The battery charging control method according to claim 6, defined as a value greater than the voltage threshold corresponding to the N-1 interval. [Claim 10] The battery charging control method according to claim 6, further comprising the step of controlling the battery to terminate charging when the voltage value of the battery reaches a voltage threshold for the last interval. [Claim 11] A battery charging system, battery; A charging device that charges the battery by applying a charging current to it; and Includes a battery charging control device that controls the magnitude of the charging current provided by the charging device, The aforementioned battery charging control device is The state of charge (SOC) of the aforementioned battery is monitored, The Nth section to which the SOC of the aforementioned battery belongs is confirmed, The charging device is controlled to charge the battery with a first charging current value which is a charging current corresponding to the interval N. If the voltage value of the battery does not reach the voltage threshold corresponding to the N interval while the SOC of the battery being charged is maintained in the N interval, the charging device is controlled to continuously charge the battery with the first charging current value until the SOC enters the N+1 interval, and once the SOC enters the N+1 interval, the charging device is controlled to charge the battery with the second charging current value, which is the charging current value stored corresponding to the N+1 interval. If the voltage value of the battery reaches the voltage threshold corresponding to the N interval while the SOC of the battery being charged is maintained in the N interval, regardless of the SOC, the second charging current value, which is the charging current value stored corresponding to the N+1 interval, is determined based on the voltage value of the battery. A battery charging system that controls the charging device to charge the battery according to the determined second charging current value. [Claim 12] The value of the charging current corresponding to the above interval N is: The battery charging system according to claim 11, defined as a value smaller than the value of the charging current corresponding to the (N-1)th interval. [Claim 13] The aforementioned battery charging control device is The battery charging system according to claim 11, which monitors whether the voltage value of the battery reaches the voltage threshold value stored in the interval N. [Claim 14] The voltage threshold corresponding to the interval N is The battery charging system according to claim 11, defined as a value greater than the voltage threshold corresponding to the (N-1)th interval. [Claim 15] The aforementioned battery charging control device is The battery charging system according to claim 11, wherein the charging device is controlled to terminate charging of the battery when the voltage value of the battery reaches the voltage threshold for the last interval.

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