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

Abstract

The invention relates to a battery charging control device and method, a battery system including the same, and a charging apparatus. The battery charging control device includes the following commands: obtaining temperature information of the battery system; the charging current of the battery is controlled based on temperature information of the battery system when the battery in the battery system is charged by the charging device, and the battery system may include a battery management device that receives temperature information from a second temperature sensor located outside the charging device when the battery is charged by the charging device, and controls the charging current of the battery based on the temperature information. And control a charging current of the battery based on temperature information received from at least one of the first temperature sensor and the second temperature sensor.

Description

Technical Field

[0001] This application claims priority and benefit to Korean Patent Application No. 10-2024-0066385, filed on May 22, 2024, and Korean Patent Application No. 10-2024-0184332, filed on December 12, 2024, the entire contents of which are incorporated herein by reference.

[0002] This invention relates to a battery charging control device and method, a battery system including the same, and a charging device, and more specifically, to a battery charging control device and method, a battery system including the same, and a charging device. Background Technology

[0003] With the continued depletion of fossil fuels and increasing concerns about environmental pollution, the demand for rechargeable batteries as an environmentally friendly alternative energy source is rapidly increasing. Among various alternative energy sources, the demand for rechargeable lithium-ion batteries is growing rapidly.

[0004] In response to environmental regulations and high oil prices, rechargeable batteries are being used in a variety of industrial sectors, from mobile applications to vehicles, robots, and energy storage devices.

[0005] Typically, batteries used in transportation systems are configured with series-connected cell units for high output. Therefore, batteries used in transportation systems pose a high fire risk due to overheating during charging, as the charging current is quite high. Furthermore, batteries used in transportation systems can catch fire due to thermal runaway caused by impacts from the road surface or abnormal overcharging.

[0006] Therefore, it is used to determine whether a fire has occurred in the battery based on real-time measurements of internal temperature changes of the battery management device using temperature sensors installed in the battery management device.

[0007] However, this type of conventional fire diagnostic equipment has a drawback: when the temperature sensor inside the battery management device malfunctions or the ambient temperature changes significantly over a short period of time, the reliability of the measurement may be reduced. Summary of the Invention

[0008] [Technical Issues]

[0009] To avoid one or more problems of related technologies, embodiments of this disclosure provide a battery charging control device that determines the occurrence of anomalies based on temperature changes in the battery and device, and prevents fires from occurring during battery charging in advance.

[0010] To avoid one or more problems of related technologies, embodiments of this disclosure also provide a battery charging control method for determining the occurrence of anomalies based on temperature changes in the battery and device, and to prevent fires from occurring during battery charging.

[0011] To avoid one or more problems of related technologies, embodiments of this disclosure also provide a battery system that determines the occurrence of anomalies based on temperature changes in the battery and device, and prevents fires from occurring during battery charging in advance.

[0012] To avoid one or more problems of related technologies, embodiments of this disclosure also provide a charging device that determines the occurrence of anomalies based on temperature changes in the battery and device, and prevents fires from occurring during battery charging in advance.

[0013] [Technical Solution]

[0014] To achieve the objectives of this disclosure, a battery charging control device includes: at least one processor; a memory configured to store at least one instruction executed by the at least one processor, wherein the at least one instruction includes: an instruction for obtaining temperature information of a battery system; and an instruction for controlling the charging current of the battery based on the temperature information of the battery system when the battery in the battery system is charged by a charging device.

[0015] Here, the temperature information of the battery system can be obtained from at least one of a first temperature sensor and a second temperature sensor, the first temperature sensor being configured to measure the temperature of the battery, and the second temperature sensor being located outside the charging device and configured to measure the external temperature of the device to which the battery is applied.

[0016] Here, the second temperature sensor may include a thermal imaging camera mounted on the outside of the charging device.

[0017] Meanwhile, the instructions for controlling the charging current may include: instructions for determining that an abnormality has occurred in the battery when the battery temperature is equal to or higher than a first battery temperature setting value, or when the external temperature of the device to which the battery is applied is equal to or higher than an external temperature setting value; and instructions for cutting off the charging current supplied to the battery when an abnormality is determined to have occurred in the battery.

[0018] In addition, the instructions for controlling the charging current may include: instructions for determining signs of an abnormality in the battery when the battery temperature is equal to or higher than a second battery temperature setting and the external temperature of the device to which the battery is applied is lower than an external temperature setting, wherein the second battery temperature setting is lower than a first battery temperature setting; and instructions for adjusting the magnitude of the charging current supplied to the battery downward when signs of an abnormality in the battery occur.

[0019] In addition, the instructions for controlling the charging current may include: instructions for identifying the charging method of the battery when the battery temperature is equal to or higher than a second battery temperature setting and the external temperature of the device to which the battery is applied is lower than an external temperature setting, wherein the second battery temperature setting is lower than a first battery temperature setting; and instructions for changing the charging method of the battery from constant current (CC) charging to constant voltage (CV) charging and charging the battery when the charging method of the battery is constant current charging (CC charging).

[0020] In addition, the instructions for controlling the charging current may include: instructions for determining that an abnormality has occurred in the battery when the temperature change value of the battery calculated for each predetermined time period is equal to or higher than a first temperature change setting value; and instructions for cutting off the charging current supplied to the battery when it is determined that an abnormality has occurred in the battery.

[0021] In addition, the instructions for controlling the charging current may include: instructions for determining that an abnormality has occurred in the battery when the temperature change value of the battery is continuously maintained above a second temperature change set value for a predetermined time; and instructions for cutting off the charging current supplied to the battery when it is determined that an abnormality has occurred in the battery.

[0022] Additionally, the instructions for controlling the charging current may include instructions for determining that an abnormality has occurred in the charging device when the battery temperature is lower than a second battery temperature setting and the external temperature of the device to which the battery is applied is higher than an external temperature setting.

[0023] Here, the instructions for determining that an anomaly has occurred in the charging device may include: instructions for receiving the internal temperature of the charging device measured from a third temperature sensor located within the charging device; and instructions for determining that an anomaly has occurred in the charging device if the internal temperature of the charging device is equal to or higher than an internal temperature setpoint.

[0024] Additionally, at least one instruction may include an instruction to send a battery diagnostic result generated based on the battery system's temperature information to at least one of the device to which the battery is applied and the user terminal of the device to which the battery is applied.

[0025] According to another embodiment of this disclosure, a charging control method for a battery charging control device may include: obtaining temperature information of a battery system; and controlling the charging current of the battery based on the temperature information of the battery system when charging the battery in the battery system by a charging device.

[0026] Obtaining temperature information for the battery system may include receiving the battery temperature from a first temperature sensor and receiving the external temperature of the device to which the battery is applied from a second temperature sensor located outside the charging device.

[0027] The second temperature sensor may include a thermal imaging camera mounted on the outside of the charging device.

[0028] Controlling the charging current of the battery may include: determining that an abnormality has occurred in the battery when the battery temperature is equal to or higher than a first battery temperature setpoint, or when the external temperature of the device to which the battery is applied is equal to or higher than an external temperature setpoint; and cutting off the charging current supplied to the battery when an abnormality has been determined to have occurred in the battery.

[0029] Controlling the charging current of the battery may include: determining that an abnormality has occurred in the battery when the battery temperature is equal to or higher than a second battery temperature setting and the external temperature of the device to which the battery is applied is lower than an external temperature setting, wherein the second battery temperature setting is lower than a first battery temperature setting; and adjusting the magnitude of the charging current supplied to the battery downward when an abnormality has occurred in the battery.

[0030] Controlling the battery charging current may include: identifying the battery charging method when the battery temperature is equal to or higher than a second battery temperature setpoint and the external temperature of the device to which the battery is applied is lower than an external temperature setpoint, wherein the second battery temperature setpoint is lower than a first battery temperature setpoint; and when the battery charging method is constant current charging (CC charging), changing the battery charging method from constant current (CC) charging to constant voltage (CV) charging and charging the battery.

[0031] Controlling the charging current of the battery may include: determining that an abnormality has occurred in the battery when the temperature change value of the battery calculated for each predetermined time period is equal to or higher than a first temperature change set value; and cutting off the charging current supplied to the battery when an abnormality has been determined to have occurred in the battery.

[0032] Controlling the charging current of the battery may include: determining that an abnormality has occurred in the battery when the temperature change value of the battery is continuously maintained above a second temperature change set value for a predetermined time; and cutting off the charging current supplied to the battery when an abnormality is determined to have occurred in the battery.

[0033] Controlling the charging current of the battery may include determining that an abnormality has occurred in the charging device when the battery temperature is lower than a second battery temperature setpoint and the external temperature of the device to which the battery is applied is higher than an external temperature setpoint.

[0034] Determining that an anomaly has occurred in the charging device may include: receiving the internal temperature of the charging device as measured by a third temperature sensor located within the charging device; and determining that an anomaly has occurred in the charging device if the internal temperature of the charging device is equal to or higher than an internal temperature setpoint.

[0035] The method may also include sending diagnostic results of the battery, generated based on temperature information of the battery system, to at least one of the device to which the battery is applied and the user terminal of the device to which the battery is applied.

[0036] According to another embodiment of this disclosure, a battery system may include: a battery; a battery management device for managing the battery; and a first temperature sensor configured to measure the temperature of the battery, wherein the battery management device is configured to receive temperature information from a second temperature sensor located outside the charging device when the battery is being charged by a charging device, and to control the charging current of the battery based on the temperature information received from at least one of the first and second temperature sensors.

[0037] The second temperature sensor can measure the external temperature of the device in which the battery is applied.

[0038] According to another embodiment of this disclosure, a charging device may include: a battery charging control unit for controlling battery charging; and a temperature sensor configured to measure the external temperature of the device to which the battery is applied during battery charging, wherein the battery charging control unit is configured to receive temperature information from a battery management device when the battery is charged by the charging device, and to control the charging current of the battery based on the temperature information received from at least one of the temperature sensor and the battery management device.

[0039] Temperature sensors may include thermal imaging cameras mounted on the outside of the charging device.

[0040] [Beneficial Effects]

[0041] According to an embodiment of the present invention, a battery charging control device is applied to a battery system or charger to acquire the temperature of the battery and the temperature of the device to which the battery is applied during the battery charging process, and to determine whether an abnormality has occurred in the battery based on the battery temperature and to control the charging current supplied to the battery, thereby preventing battery fires and achieving safe and reliable battery operation. Attached Figure Description

[0042] Figure 1 This is a block diagram of a battery system to which embodiments of the present invention can be applied.

[0043] Figure 2 This is a block diagram illustrating the power charging of a device including a battery system according to an embodiment of the present invention.

[0044] Figure 3 This is a block diagram of a battery system according to an embodiment of the present invention.

[0045] Figure 4 This is a block diagram of a charging device according to another embodiment of the present invention.

[0046] Figure 5 The image is captured by a second temperature sensor according to an embodiment of the present invention.

[0047] Figure 6 This is a block diagram of a battery charging control device according to an embodiment of the present invention.

[0048] Figure 7 This is a flowchart of a battery charging control method according to an embodiment of the present invention.

[0049] Figure 8 This is a flowchart illustrating the step of determining whether a battery is abnormal in a battery charging control method according to an embodiment of the present invention.

[0050] Figure 9 This is a flowchart illustrating the step of determining whether a charging device malfunctions in a battery charging control method according to an embodiment of the present invention.

[0051] Figure 10 This is a flowchart of a battery charging control method according to another embodiment of the present invention.

[0052] S: Battery system; C: Charging equipment

[0053] D: Equipment

[0054] 310: Battery; 320: Battery Management Device

[0055] 330: First temperature sensor; 340, 600: Battery charging control device

[0056] 410: Connector; 420: Second temperature sensor

[0057] 430: Third temperature sensor; 440: Input unit

[0058] 450: Output unit; 460: Battery charging control unit

[0059] 610: Processor; 620: Memory

[0060] 630: Transceiver; 640: Input interface device

[0061] 650: Output interface device; 660: Storage device

[0062] 670: Bus Detailed Implementation

[0063] This invention can be modified in various forms and has various embodiments, and specific embodiments thereof are shown by way of example in the accompanying drawings and will be described in detail below. However, it should be understood that the invention is not intended to be limited to the specific embodiments, but rather, the invention is intended to cover all modifications, equivalents, and alternatives falling within the spirit and technical scope of the invention. Throughout the description of the accompanying drawings, similar reference numerals refer to similar elements.

[0064] It should be understood that although terms such as first, second, A, B, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of the invention. As used herein, the term "and / or" includes a combination of multiple associated listed items or any one of multiple associated listed items.

[0065] It should be understood that when a component is described as being “coupled” or “connected” to another component, it can be directly coupled or connected to the other component, or there may be intermediate components. Conversely, when a component is described as being “directly coupled” or “directly connected” to another component, there are no intermediate components.

[0066] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It will be further understood that the terms “comprising,” “including,” “containing,” “comprise,” and / or “having” as used herein specify the presence of stated features, integers, steps, operations, constituent elements, components, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, constituent elements, components, and / or combinations thereof.

[0067] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant field, and will not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0068] Figure 1 This is a block diagram of a battery system to which embodiments of the present invention can be applied.

[0069] refer to Figure 1A battery pack or module may include multiple battery cells connected in series. A battery pack or module can be connected to a load via positive and negative terminals to perform charging or discharging. The most commonly used battery cell is the lithium-ion (Li-ion) battery cell.

[0070] The battery management system (BMS) 100 can be connected to a battery module or battery pack.

[0071] A battery management system can monitor the current, voltage, and temperature of each battery cell or module (group) under its management, and calculate the battery's state of charge (SOC) based on the monitoring results to control charging and discharging. Here, the state of charge (SOC) refers to the battery's current state of charge, expressed as a percentage point [%], and the state of health (SOH) can be the battery's current condition compared to its ideal condition, expressed as a percentage point [%].

[0072] BMS can monitor individual battery cells, read their voltages, and send them to other systems connected to the battery.

[0073] In addition, the battery management system monitors at least one electrical component that constitutes the battery system and transmits their status data to other systems. For this purpose, the BMS includes a communication module for communicating with other systems in a device that includes the battery system.

[0074] The communication module of the BMS can communicate with other systems in the device using a Controller Area Network (CAN). Here, components, modules, or systems in the BMS are connected to each other via a CAN bus. Therefore, the Battery Management System (BMS) can use CAN communication to remotely transmit status data obtained by monitoring the battery pack or module and at least one electrical component constituting the Battery Management System (BMS) to other systems.

[0075] At the same time, the battery management system (BMS) can balance the charge of individual battery cells equally in order to extend the life of the battery system.

[0076] A battery management system (BMS) can include various components such as fuses, current sensing elements, thermistors, switches, and balancers to perform such operations. In most cases, a microcontroller unit (MCU) or battery monitoring integrated chip (BMIC) for interconnecting and controlling these components is also included in the BMS.

[0077] Figure 2 This is a block diagram illustrating the power charging of a device including a battery system according to an embodiment of the present invention.

[0078] refer to Figure 2The battery system S can be applied to a battery-powered device D. In other words, the battery system S can be applied to a device D that uses a battery as a power source. According to an embodiment, device D may include a means of transportation. For example, device D may be an electric vehicle, an electric scooter, or an electric bicycle.

[0079] The battery system S can be electrically connected to the charging device C. Therefore, the charging device C can charge the battery inside the battery system S. According to an embodiment, the battery system S can be electrically connected via a connector included in the charging device C.

[0080] Furthermore, the battery system S can be communicatively connected to the charging device C. According to an embodiment, the battery system S can send at least one communication signal to and receive at least one communication signal from the charging device C via wired or wireless communication. For example, the battery system S can be connected to a connector of the charging device C and can perform wired communication with the charging device C.

[0081] Figure 3 This is a block diagram of a battery system according to an embodiment of the present invention.

[0082] refer to Figure 3 The battery system S may include a battery 310, a battery management device 320, and a first temperature sensor 330. Furthermore, the battery system S may also include a battery charging control device 340.

[0083] Battery 310 may be provided in the form of at least one battery cell connected in series or parallel. For example, battery 310 may be provided in the form of a battery module. Here, a battery module may refer to a component comprising multiple electrically connected battery cells and used in a particular system or device as a power supply source. For example, a battery module may refer to a battery module, battery pack, or battery rack, but the scope of the invention is not limited to these entities. Furthermore, depending on the device or system using the battery, a battery module may also be referred to as a battery bank. According to embodiments, battery 310 may be a battery module or a battery pack.

[0084] The battery management device 320 can manage and control the battery 310. According to an embodiment, the battery management device 320 can receive at least one control signal from the battery charging control device 340, which will be described later, and control the charging of the battery 310 according to the control signal.

[0085] The first temperature sensor 330 may be located around the battery 310 and can measure the temperature of the battery 310. According to an embodiment, the first temperature sensor 330 is positioned close to the battery 310 and can measure the real-time temperature of the battery 310.

[0086] In response to a request from the battery charging control device 340, the first temperature sensor 330 can send a measured temperature of at least one battery 310 to the battery charging control device 340. Therefore, the battery charging control device, as described later, can determine whether the battery 310 is malfunctioning based on its temperature.

[0087] The battery charging control device 340 can control the charging current supplied to the battery 310 based on the temperature information of the battery system S when charging the battery 310. For example... Figure 3 As shown, the battery charging control device 340 is located inside the battery system S and can control the magnitude of the charging current supplied from the charging device C or block the supply of charging current.

[0088] However, not limited to what has already been disclosed, the battery charging control device 340 may be located inside the charging device C, rather than in the battery system S, such as... Figure 4 The battery charging control unit 460 shown controls the magnitude of the charging current supplied to the battery 310 or stops the supply of charging current.

[0089] Figure 4 This is a block diagram of a charging device according to another embodiment of the present invention, and Figure 5 The image is captured by a second temperature sensor according to an embodiment of the present invention.

[0090] Reference Figure 4 The charging device C may include a connector 410, a second temperature sensor 420, a third temperature sensor 430, an input unit 440, and an output unit 450. Furthermore, the charging device C may also include a battery charging control unit 460.

[0091] One end of connector 410 is connected to charging device C, and the other end is connected to battery system S within device D, to which the battery system is applied. Therefore, connector 410 can transmit charging current supplied from charging device C to battery 310 via battery system S. In other words, charging device C can charge battery 310 by supplying charging current to battery system S via connector 410.

[0092] The second temperature sensor 420 can be located on the outside of the charging device C. According to an embodiment, when the battery 310 is being charged, the second temperature sensor 420 can be activated to measure the temperature of the external region of the device D, including the battery 310. Here, the external region can include the area inside the device D where the battery 310 is located, and can include the point where the battery 310 is located and the surrounding area. For example, the second temperature sensor 420 can be provided as a thermal imaging camera, such as... Figure 5 As shown.

[0093] According to an embodiment, the second temperature sensor 420 can send information about the measured temperature of at least one battery 310 to the battery charging control device 340 upon request from the battery charging control device 340 in the battery system S.

[0094] According to another embodiment, the second temperature sensor 420 can send information about the measured temperature of at least one battery 310 to the battery charging control unit 460 described below. Therefore, the battery charging control unit 460 can determine the magnitude of the charging current to be supplied to the battery 310 based on the temperature information.

[0095] The third temperature sensor 430 can be located inside the charging device C. Therefore, the third temperature sensor 430 can measure the internal temperature of the charging device.

[0096] The input unit 440 can be located on the outer surface of the charging device C and can receive at least one piece of user information from the user. For example, the input unit 440 can be provided as a keypad or a camera, and can receive user terminal information, vehicle information, payment information, etc. from the user.

[0097] The output unit 450 may be located on the outer surface of the charging device C and may provide at least one status information of the charging device C to a supplier or user. For example, the output unit 450 may be provided as a display device and may output and provide information about the charging progress status of the charging device C, diagnostic information based on whether an abnormality has occurred, etc., to the supplier or user. However, not limited to the disclosed content, the charging device C may send at least one status information to a user terminal or supplier terminal instead of the output unit 450.

[0098] The battery charging control unit 460 can be installed inside the charging device C, and can control the magnitude of the charging current supplied to the battery 310 or stop supplying the charging current when charging the battery 310.

[0099] However, this is not limited to content that has already been made public, such as Figure 3 The battery charging control device (350) can be located within the battery system S instead of within the charging device C. In other words, the battery charging control device (350) and the battery charging control unit 460 can have the same configuration in at least one of the battery system S and the charging device C.

[0100] In the following text, Figure 6 In this document, the configuration of the battery charging control device 350 and the battery charging control unit 460 will be collectively referred to as the battery charging control device 600, and will be described in more detail.

[0101] Figure 6 This is a block diagram of a battery charging control device according to an embodiment of the present invention.

[0102] Reference Figure 6 The battery charging control device 600 can obtain temperature information of the battery system S when charging the battery 310 included in the device D. Subsequently, the battery charging control device 600 can control the charging current of the battery 310 based on the temperature information of the battery system S.

[0103] According to an embodiment, the temperature information of the battery system S may include the temperature of the battery 310 and the external temperature of the device D.

[0104] More specifically, the battery charging control device 600 can receive the temperature of the battery 310 from the first temperature sensor 330 in the battery system S when charging the battery 310.

[0105] Furthermore, when charging the battery 310, the battery charging control device 600 can receive the external temperature of the device D sent from the second temperature sensor 420 outside the charging device C.

[0106] Subsequently, the battery charging control device 600 can control the magnitude of the charging current supplied to the battery 310 based on the temperature of the battery 310 and the temperature of the device D.

[0107] According to an embodiment, the battery charging control device 600 may be included in the battery system S, such as... Figure 3 As shown. Therefore, the battery charging control device 600 can determine the magnitude of the charging current supplied from the charging device C by taking into account the temperature of the battery 310 and the external temperature of the device D. Thereafter, the battery charging control device 600 can send information about the determined magnitude of the charging current to the battery management device 320. Therefore, the battery charging control device 600 can control the battery management device 320 to supply a charging current to the battery 310 at the determined magnitude.

[0108] According to another embodiment, the battery charging control device 600 can be included in the charging device C, such as... Figure 4 As shown. Therefore, the battery charging control device 600 can determine the magnitude of the charging current to be supplied from the charging device C by considering the temperature of the battery 310 and the external temperature of the device D. Thereafter, the battery charging control device 600 can supply a charging current to the battery 310 according to the determined charging current magnitude. Therefore, the battery 310 can be charged by the charging current magnitude determined by the battery charging control device 600. Therefore, the battery charging control device 600 can diagnose the state of the battery 310 by considering the temperature of the battery 310 and the temperature of the device D, and control the magnitude of the charging current based on the diagnosis, thereby preventing fires that may occur during the battery charging process.

[0109] To describe the hardware configuration of the battery charging control device 600 in more detail, the battery charging control device 600 may include a memory 610, a processor 620, a transceiver 630, an input interface device 640, an output interface device 650, and a storage device 660.

[0110] According to an embodiment, corresponding components 610, 620, 630, 640, 650, and 660 included in the battery charging control device 600 can be connected to each other via a bus 670 to communicate with each other.

[0111] The memory 610 and storage device 600 among components 610, 620, 630, 640, 650, and 660 may include at least one of volatile storage media and non-volatile storage media. For example, the memory 610 and storage device 660 may include at least one of read-only memory (ROM) and random access memory (RAM).

[0112] Among them, memory 610 may include at least one instruction executed by processor 620.

[0113] According to an embodiment, at least one instruction may include: an instruction for obtaining temperature information of the battery system; and an instruction for controlling the charging current of the battery based on the temperature information of the battery system when the battery in the battery system is charged by a charging device.

[0114] Here, the temperature information of the battery system can be obtained from at least one of a first temperature sensor configured to measure the temperature of the battery and a second temperature sensor located outside the charging device and configured to measure the external temperature of the device to which the battery is applied.

[0115] Here, the second temperature sensor may include a thermal imaging camera mounted on the outside of the charging device.

[0116] Meanwhile, the instructions for controlling the charging current may include: instructions for determining that an abnormality has occurred in the battery when the battery temperature is equal to or higher than a first battery temperature setting value, or when the external temperature of the device to which the battery is applied is equal to or higher than an external temperature setting value; and instructions for cutting off the charging current supplied to the battery when an abnormality is determined to have occurred in the battery.

[0117] In addition, the instructions for controlling the charging current may include: instructions for determining signs of an abnormality in the battery when the battery temperature is equal to or higher than a second battery temperature setting and the external temperature of the device to which the battery is applied is lower than an external temperature setting, wherein the second battery temperature setting is lower than a first battery temperature setting; and instructions for adjusting the magnitude of the charging current supplied to the battery downward when signs of an abnormality in the battery occur.

[0118] In addition, the instructions for controlling the charging current may include: instructions for identifying the charging method of the battery when the battery temperature is equal to or higher than a second battery temperature setting and the external temperature of the device to which the battery is applied is lower than an external temperature setting, wherein the second battery temperature setting is lower than a first battery temperature setting; and instructions for changing the charging method of the battery from constant current (CC) charging to constant voltage (CV) charging and charging the battery when the charging method of the battery is constant current charging (CC charging).

[0119] In addition, the instructions for controlling the charging current may include: instructions for determining that an abnormality has occurred in the battery when the temperature change value of the battery calculated for each predetermined time period is equal to or higher than a first temperature change setting value; and instructions for cutting off the charging current supplied to the battery when it is determined that an abnormality has occurred in the battery.

[0120] In addition, the instructions for controlling the charging current may include: instructions for determining that an abnormality has occurred in the battery when the temperature change value of the battery is continuously maintained above a second temperature change set value for a predetermined time; and instructions for cutting off the charging current supplied to the battery when it is determined that an abnormality has occurred in the battery.

[0121] Additionally, the instructions for controlling the charging current may include instructions for determining that an abnormality has occurred in the charging device when the battery temperature is lower than a second battery temperature setting and the external temperature of the device to which the battery is applied is higher than an external temperature setting.

[0122] Instructions for determining that an anomaly has occurred in the charging device may include: instructions for receiving the internal temperature of the charging device as measured from a third temperature sensor located within the charging device; and instructions for determining that an anomaly has occurred in the charging device if the internal temperature of the charging device is equal to or higher than an internal temperature setpoint.

[0123] At least one instruction may also include an instruction for sending diagnostic results of the battery, generated based on temperature information of the battery system, to at least one of the device to which the battery is applied and the user terminal of the device to which the battery is applied.

[0124] Processor 620 may refer to a central processing unit (CPU), graphics processing unit (GPU), or dedicated processor on which the methods according to embodiments of the present invention are executed.

[0125] As described above, processor 620 can execute at least one program command stored in memory 610.

[0126] Figure 7 This is a flowchart of a battery charging control method according to an embodiment of the present invention.

[0127] Reference Figure 7 The processor 620 in the battery charging control device 600 can obtain temperature information of the battery system S when charging the battery 310.

[0128] According to one embodiment, the processor 620 may receive the temperature of the battery 310 sent from the first temperature sensor 330 in the battery system S (S710). Thereafter, the processor 620 may store the temperature of the battery 310 received from the first temperature sensor 330 in a separate storage device 660.

[0129] According to another embodiment, the processor 620 may receive the external temperature of the device D in the battery system S from a second temperature sensor 420 outside the charging device C (S720). Thereafter, the processor 620 may store the external temperature of the device D received from the second temperature sensor 420 in a separate storage device 660.

[0130] Subsequently, the processor 620 can determine whether an anomaly has occurred in the battery 310 based on the temperature information of the battery system S stored in the storage device 660. In other words, the processor 620 can determine whether an anomaly has occurred in the battery 310 based on at least one of the temperature of the battery 310 and the external temperature of the device D.

[0131] Subsequently, depending on the location where the battery charging control device 600 is provided, the processor 620 may send a charging control signal to the battery management device 320 or the charging device C in the battery system S, based on whether an abnormality has occurred in the battery 310 (S730). Afterwards, the battery management device 320 or the charging device C can control the charging current of the battery 310 according to the charging control signal received from the processor 620 in the battery charging control device 600.

[0132] According to an embodiment, when the battery charging control device 600 is present in the battery system S (corresponding to...) Figure 3 When configured as 340, if it is determined that the battery 310 has malfunctioned, the processor 620 can send a signal to prevent the supply of charging current to the battery management device 320. Therefore, the battery management device 320 can prevent the charging current supplied to the battery 310 by blocking the inflow path of the charging current between the charging device C and the battery 310.

[0133] Meanwhile, when the battery charging control device 600 is present in the charging device C (corresponding to...) Figure 4 When the configuration 460 is selected, if an abnormality is determined to occur in the battery 310, the processor 620 can send a signal to cut off the supply of charging current to the charging device C.

[0134] According to another embodiment, when the battery charging control device 600 is present in the battery system S (corresponding to...) Figure 3 When the configuration 340 is selected, if it is determined that there are signs of an abnormality in the battery 310, the processor 620 can send a signal to the battery management device 320 to change the charging method or adjust the magnitude of the charging current. Therefore, the battery management device 320 can change the charging method of the battery 310 or adjust the magnitude of the charging current supplied from the charging device C to the battery 310 downward.

[0135] Meanwhile, when the charging device C contains a battery charging control device 600 (corresponding to...) Figure 4 If the processor 620 determines that there are signs of an abnormality in the battery 310, it can send a signal to the battery management device 320 to change the charging method or to the charging device C to adjust the charging current. Therefore, the charging method of the battery 310 can be changed by the battery management device 320, or the charging current can be adjusted downwards by the charging device C and supplied to the battery 310.

[0136] According to another embodiment, if it is determined that no abnormality has occurred in the battery 310, the processor 620 can continuously monitor the temperature of the battery 310 and the external temperature of the device D without controlling the charging current of the battery 310.

[0137] At the same time, the processor 620 can send the result of determining whether an abnormality has occurred in the battery 310 to the user terminal or device D.

[0138] Figure 8 This is a flowchart illustrating the step of determining whether a battery is abnormal in a battery charging control method according to an embodiment of the present invention.

[0139] refer to Figure 8 The processor 620 can compare the temperature of the battery 310 with a predefined first battery temperature setpoint B. th1 A comparison is performed (S810). Here, the first battery temperature setpoint B is used. th1 This can be a predefined setting based on the C-rate of battery 310. According to an embodiment, the first battery temperature setting value B... th1 It can be stored in advance in storage device 660.

[0140] According to an embodiment, if the battery temperature is higher than or equal to a predefined first battery temperature setpoint (Yes in S810), the processor 620 can determine that the battery is abnormal (S811). Therefore, the processor 620 can send a signal to the battery management device 320 or the charging device C to cut off the charging current supply (S812) to cut off the charging current supplied to the battery 310.

[0141] According to another embodiment, if the battery temperature is lower than a predefined first battery temperature setting value (No in S810), the processor 620 can compare the temperature of the battery 310 with a predefined second battery temperature setting value B. th2 Comparison (S820).

[0142] Here, the second battery temperature setting value B th2 It can be a predefined setting value based on the C-rate of battery 310. According to an embodiment, the second battery temperature setting value B... th2 It can be stored in advance in storage device 660. Here, the second battery temperature setting value B th2 It can be higher than the first battery temperature setting value B. th1 Low temperature.

[0143] When the temperature of battery 310 is equal to or higher than the second battery temperature setting value B th2 (In S820) when the processor 620 can compare the external temperature of device D with the external temperature setpoint D th1 Comparison (S830). For example, the external temperature setpoint D. th1 It can be a predefined setting based on the C-rate of battery 310. According to an embodiment, the external temperature setting value D... th1 It can be provided in advance by being stored in storage device 660.

[0144] Here, when the external temperature of device D is equal to or higher than the external temperature setpoint D th1 When (in S830) the processor 620 determines that an abnormality has occurred in the battery 310, as in step S811. Therefore, the processor 620 can send a signal to cut off the supply of charging current to the battery management device 320 or the charging device C, as in step S812, to cut off the charging current supplied to the battery 310.

[0145] Meanwhile, if the external temperature of device D is lower than the external temperature setpoint D th1 If (no in S830), then the processor 620 can determine that there are signs of an anomaly in the battery 310 (S831), and can check the charging method of the battery 310.

[0146] According to one embodiment, if the charging method of battery 310 is constant current charging (CC charging) (Yes in S832), then processor 620 can send a signal to battery management device 320 or charging device C to change the charging method of battery 310 (S833). Therefore, the charging method of battery 310 can be changed from constant current charging (CC charging) to constant voltage charging (CV charging).

[0147] According to another embodiment, if the battery is charged using a constant voltage charging (CV charging) method (No in S832), the processor 620 can send a signal to the battery management device 320 or the charging device C to adjust the magnitude of the charging current (S834). Therefore, the magnitude of the charging current supplied to the battery 310 can be adjusted downwards to a predetermined value.

[0148] Meanwhile, if the temperature of battery 310 is lower than the predefined second battery temperature setpoint B th2 (No in S820), then the processor 620 can compare the external temperature of device D with the external temperature setpoint D. th1 Compare (S840).

[0149] According to one embodiment, if the external temperature of device D is equal to or higher than the external temperature setpoint D th1 (In S840, yes), then the processor 620 can diagnose whether an abnormality has occurred in the charging device C (S841). The following will... Figure 9 The method for diagnosing whether an abnormality has occurred in the charging device C is described in more detail.

[0150] Furthermore, according to another embodiment, if the external temperature of device D is lower than the external temperature set value D th1 If (No in S840), then the processor 620 can determine that the battery 310 is normal (S850). Therefore, the processor 620 can continuously monitor the temperature of the battery 310 and the external temperature of the device D without a control signal for charging current.

[0151] Figure 9 This is a flowchart illustrating the step of determining whether a charging device malfunctions in a battery charging control method according to an embodiment of the present invention.

[0152] refer to Figure 9 The processor 620 can diagnose whether any abnormalities have occurred in the charging device C, such as... Figure 8 The steps are shown in step S841.

[0153] More specifically, the processor 620 can receive the internal temperature of the charging device C measured from the third temperature sensor 430 (S910). Here, the third temperature sensor 430 can be a device located inside the charging device C and measures the real-time internal temperature of the charging device C.

[0154] If the internal temperature of the charging device C, as measured by the third temperature sensor 430, is equal to or higher than the internal temperature setpoint C... th1 (S920) Then the processor 620 can determine that an abnormality has occurred in the charging device C (S930). For example, the internal temperature setting value C th1 It can be a value pre-ordered by the supplier.

[0155] Meanwhile, if the internal temperature of the charging device C is lower than the internal temperature set value C th1 (S920) Then the processor 620 can send the check signal of the first temperature sensor 330 in the battery system S to the user terminal or device D, or it can send the check signal of the third temperature sensor 430 of the charging device C to the user terminal, supplier terminal or output unit 450 (S940). Therefore, the first temperature sensor 330 and the third temperature sensor 330 can be induced to be checked by the user.

[0156] Figure 10 This is a flowchart of a battery charging control method according to another embodiment of the present invention.

[0157] refer to Figure 10 The processor 620 of the battery charging control device 600 can receive the temperature of the battery 310 measured by the first temperature sensor 330 in each predefined time period and calculate the temperature change value of the battery 310 (S1010). For example, the processor 620 can calculate the temperature change value of the battery 310 by subtracting the temperature of the battery 310 received in a previous time period from the temperature of the battery 310 received in the current time period.

[0158] According to an embodiment, if the temperature change value of battery 310 is equal to or higher than a predetermined first temperature change set value T th1 (If it is in S1020), then the processor 620 can determine that an abnormality has occurred in the battery (S1030). Therefore, the processor 620 can send a charging current supply cut-off signal to the battery management device 320 or the charging device C to cut off the charging current supplied to the battery 310. For example, the first temperature change setpoint T th1 It can be a predetermined value based on the C-rate of battery 310. According to an embodiment, the first temperature change setpoint T... th1 It can be provided in advance by being stored in storage device 660.

[0159] According to another embodiment, when the temperature change value of battery 310 is less than a predetermined first temperature change set value T th1 If (S1020 No) occurs, the processor 620 can determine that the battery is normal (S1040). Therefore, the processor 620 can continuously monitor the temperature change value of the battery 310 at predetermined intervals.

[0160] Furthermore, not limited to what has been disclosed, even if the temperature change value of battery 310 remains continuously at the second temperature change set value T th2 Upon reaching a predetermined time, the processor 620 can also determine that an abnormality has occurred in the battery 310. For example, the predetermined time could be 5 seconds, and the second temperature change setting value T...th2 It can be a predetermined value based on the C-rate of battery 310, and can be set with the first temperature change value T. th1 Same or different. According to an embodiment, the second temperature change setpoint T... th2 The value can be stored in the storage device 660 in advance. Therefore, the processor 620 can send a charging current supply cut-off signal to the battery management device 320 or the charging device C, thereby cutting off the charging current supplied to the battery 310.

[0161] The battery charging control device and method, the battery system including the device, and the charging equipment according to embodiments of the present invention have been described above.

[0162] According to embodiments of the present invention, a battery charging control device and method, a battery system including the device, and a charging equipment determine whether an abnormality has occurred in the battery by acquiring the temperature of the battery and the temperature of the equipment measured during the battery charging process, and control the charging current supplied to the battery, thereby preventing battery fires in advance.

[0163] The operation of the method according to embodiments 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 all types of recording devices in which data readable by a computer system is stored. Furthermore, the computer-readable recording medium can be distributed across network-connected computer systems to store and execute computer-readable programs or code in a distributed manner.

[0164] Furthermore, computer-readable recording media can include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Program instructions can include not only machine language code created by a compiler, but also high-level language code that can be executed by a computer using an interpreter.

[0165] Although some aspects of the invention have been described in the context of apparatus, they may also refer to, according to the description of the corresponding method, a block or apparatus corresponding to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also refer to features of a corresponding block or item or a corresponding apparatus. Some or all of the method steps may be performed by (or using) hardware devices, such as, for example, a microprocessor, a programmable computer, or electronic circuitry. In some embodiments, one or more of the most important method steps may be performed by such apparatus.

[0166] In the foregoing, the present invention has been described with reference to exemplary embodiments thereof. However, those skilled in the art will understand that various corrections and modifications may be made to the present invention within the scope of the appended claims without departing from the spirit and scope of the invention as described therein.

Claims

1. A battery charging control device, comprising: At least one processor; as well as A memory configured to store at least one instruction executed by the at least one processor; Wherein, the at least one instruction includes: Commands used to obtain temperature information of the battery system; and An instruction for controlling the charging current of a battery based on the temperature information of the battery system when the battery in the battery system is charged by a charging device.

2. The battery charging control device according to claim 1, wherein, The temperature information of the battery system is obtained from at least one of the following: A first temperature sensor, configured to measure the temperature of the battery; as well as A second temperature sensor is located outside the charging device and is configured to measure the external temperature of the device to which the battery is applied.

3. The battery charging control device according to claim 2, wherein, The second temperature sensor includes a thermal imaging camera mounted on the outside of the charging device.

4. The battery charging control device according to claim 2, wherein, The instructions for controlling the charging current include: An instruction to determine that an abnormality has occurred in the battery when the battery temperature is equal to or higher than a first battery temperature setting, or when the external temperature of the device to which the battery is applied is equal to or higher than an external temperature setting; and An instruction to cut off the charging current supplied to the battery when an abnormality is determined to have occurred in the battery.

5. The battery charging control device according to claim 2, wherein, The instructions for controlling the charging current include: Instructions for determining signs of an abnormality in the battery when the battery temperature is equal to or higher than a second battery temperature setpoint and the external temperature of the device to which the battery is applied is lower than an external temperature setpoint, wherein the second battery temperature setpoint is lower than a first battery temperature setpoint; and An instruction to adjust the magnitude of the charging current supplied to the battery downward when signs of abnormality have occurred in the battery.

6. The battery charging control device according to claim 2, wherein, The instructions for controlling the charging current include: Instructions for recognizing a charging method for the battery when the temperature of the battery is equal to or higher than a second battery temperature setting and the external temperature of the device to which the battery is applied is lower than an external temperature setting, wherein the second battery temperature setting is lower than a first battery temperature setting; and This is an instruction to change the charging method of the battery from constant current charging to constant voltage charging when the battery is being charged using a constant current charging method, and to charge the battery.

7. The battery charging control device according to claim 2, wherein, The instructions for controlling the charging current include: An instruction to determine that an abnormality has occurred in the battery when the temperature change value of the battery calculated for each predetermined time period is equal to or higher than a first temperature change set value; and An instruction to cut off the charging current supplied to the battery when an abnormality is determined to have occurred in the battery.

8. The battery charging control device according to claim 2, wherein, The instructions for controlling the charging current include: An instruction to determine that an abnormality has occurred in the battery when the temperature change value of the battery remains above a second temperature change set value for a predetermined time; and An instruction to cut off the charging current supplied to the battery when an abnormality is determined to have occurred in the battery.

9. The battery charging control device according to claim 2, wherein, The instructions for controlling the charging current include: An instruction to determine that an abnormality has occurred in the charging device when the temperature of the battery is lower than a second battery temperature setting value and the external temperature of the device to which the battery is applied is higher than the external temperature setting value.

10. The battery charging control device according to claim 9, wherein, Instructions used to determine that an abnormality has occurred in the charging device include: Commands for receiving the internal temperature of the charging device as measured by a third temperature sensor located within the charging device; and An instruction used to determine that an abnormality has occurred in the charging device if the internal temperature of the charging device is equal to or higher than the internal temperature setting value.

11. The battery charging control device according to claim 1, further comprising: An instruction to send diagnostic results of the battery, generated based on temperature information of the battery system, to at least one of the device to which the battery is applied and the user terminal of the device to which the battery is applied.

12. A charging control method for a battery charging control device, the charging control method comprising: Obtain temperature information of the battery system; as well as When charging the battery in the battery system using a charging device, the charging current of the battery is controlled based on the temperature information of the battery system.

13. The charging control method according to claim 12, wherein, Obtaining the temperature information of the battery system includes: Receive the temperature of the battery from the first temperature sensor; and The external temperature of the device to which the battery is applied is received from a second temperature sensor located on the outside of the charging device.

14. The charging control method according to claim 13, wherein, The second temperature sensor includes a thermal imaging camera mounted on the outside of the charging device.

15. The charging control method according to claim 13, wherein, Controlling the charging current of the battery includes: When the temperature of the battery is equal to or higher than a first battery temperature setting, or when the external temperature of the device to which the battery is applied is equal to or higher than an external temperature setting, it is determined that an abnormality has occurred in the battery; and When an abnormality is determined to have occurred in the battery, the charging current supplied to the battery is cut off.

16. The charging control method according to claim 13, wherein, Controlling the charging current of the battery includes: When the temperature of the battery is equal to or higher than a second battery temperature setpoint and the external temperature of the device to which the battery is applied is lower than an external temperature setpoint, it is determined that an abnormality has occurred in the battery, where the second battery temperature setpoint is lower than a first battery temperature setpoint; and When signs of abnormality appear in the battery, the magnitude of the charging current supplied to the battery is adjusted downward.

17. The charging control method according to claim 13, wherein, Controlling the charging current of the battery includes: When the temperature of the battery is equal to or higher than a second battery temperature setting value and the external temperature of the device to which the battery is applied is lower than an external temperature setting value, the charging method of the battery is identified, wherein the second battery temperature setting value is lower than a first battery temperature setting value. When the battery is charged using a constant current charging method, the charging method is changed from a constant current charging method to a constant voltage charging method, and the battery is charged.

18. The charging control method according to claim 13, wherein, Controlling the charging current of the battery includes: When the temperature change value of the battery calculated for each predetermined time period is equal to or higher than a first temperature change set value, it is determined that an abnormality has occurred in the battery; and When an abnormality is determined to have occurred in the battery, the charging current supplied to the battery is cut off.

19. The charging control method according to claim 13, wherein, Controlling the charging current of the battery includes: When the temperature change of the battery remains above a second temperature change setpoint for a predetermined time, it is determined that an abnormality has occurred in the battery; and When an abnormality is determined to have occurred in the battery, the charging current supplied to the battery is cut off.

20. The charging control method according to claim 13, wherein, Controlling the charging current of the battery includes: When the temperature of the battery is lower than the second battery temperature setting value and the external temperature of the device to which the battery is applied is higher than the external temperature setting value, it is determined that an abnormality has occurred in the charging device.

21. The charging control method according to claim 20, wherein, Determining that an abnormality has occurred in the charging device includes: Receives the internal temperature of the charging device as measured by a third temperature sensor located within the charging device; and If the internal temperature of the charging device is equal to or higher than the internal temperature setting value, it is determined that an abnormality has occurred in the charging device.

22. The charging control method according to claim 12, further comprising: The diagnostic results of the battery, generated based on the temperature information of the battery system, are sent to at least one of the device to which the battery is applied and the user terminal of the device to which the battery is applied.

23. A battery system, comprising: Battery; A battery management device for managing the battery; as well as A first temperature sensor, configured to measure the temperature of the battery. The battery management device is configured to receive temperature information from a second temperature sensor located outside the charging device when the battery is being charged by the charging device, and to control the charging current of the battery based on the temperature information received from at least one of the first temperature sensor and the second temperature sensor.

24. The battery system according to claim 23, wherein, The second temperature sensor measures the external temperature of the device to which the battery is applied.

25. A charging device, comprising: A battery charging control unit, which is used to control battery charging; as well as A temperature sensor configured to measure the external temperature of the device to which the battery is applied during battery charging. The battery charging control unit is configured to receive temperature information from the battery management device when the battery is being charged by the charging device, and to control the charging current of the battery based on the temperature information received from at least one of the temperature sensor and the battery management device.

26. The charging device according to claim 25, wherein, The temperature sensor includes a thermal imaging camera mounted on the outside of the charging device.

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