Battery management device and its operating method

Abstract

A battery management device according to one embodiment disclosed in this document may include a sensor that generates information regarding a fire occurrence, and a controller that controls charging of the battery based on a power source for charging the battery supplied from a charger, and when charging of the battery is completed, monitors information regarding the fire occurrence based on a power source for a fire monitor supplied from the charger, and determines whether or not a fire has occurred based on the monitoring results.

Description

Technical Field

[0001] The present invention claims the benefit of priority based on Korean Patent Application No. 10-2022-0019799 filed on February 15, 2022, and all the contents disclosed in the document of the Korean patent application are incorporated herein by reference. Embodiments disclosed in this document relate to a battery management device and an operating method thereof.

Background Art

[0002] In recent years, research and development on secondary batteries have been actively conducted. Here, a secondary battery is a battery capable of charging and discharging, and includes both conventional Ni / Cd batteries, Ni / MH batteries, etc. and recent lithium-ion batteries. Among secondary batteries, lithium-ion batteries have the advantage of having a much higher energy density compared to conventional Ni / Cd batteries, Ni / MH batteries, etc. In addition, since lithium-ion batteries can be manufactured in a small and lightweight form, they are used as a power source for mobile devices, and in recent years, their usage range has been extended to the power source of electric vehicles and they have received attention as a next-generation energy storage medium.

[0003] When charging a battery included in a vehicle, the user often connects a connector to the vehicle and then leaves the spot. After the battery is fully charged, all the devices inside the vehicle will enter the sleep mode after a set time to prevent the vehicle from discharging. Thereafter, when a fire occurs inside the vehicle, problems may occur such as difficulty in collecting data or taking measures to prevent the fire.

Summary of the Invention

Problems to be Solved by the Invention

[0004] One object of the embodiments disclosed in this document is to provide a battery management device and an operating method thereof that can detect a fire and perform an operation to prevent the fire when a fire occurs inside the vehicle after the vehicle is fully charged.

[0005] One objective of the embodiments disclosed in this document is to provide a battery management device and its operating method that, after the vehicle has finished charging, receives a minimum power supply from the charging connector and enables continuous monitoring of whether or not there is a fire inside the vehicle.

[0006] The technical problems of the embodiments disclosed herein are not limited to those mentioned above, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0007] A battery management device according to one embodiment disclosed in this document may include a sensor that generates information regarding the occurrence of a fire, and a controller that controls the charging of the battery based on a power supply for charging the battery supplied from a charger, monitors the information regarding the occurrence of a fire based on a power supply for a fire monitor supplied from the charger once the battery charging is complete, and determines whether or not a fire has occurred based on the monitoring results.

[0008] In one embodiment, the controller can control other devices inside the vehicle to perform actions to prevent a fire based on whether or not a fire has occurred.

[0009] In one embodiment, if the controller determines that a fire has occurred, it may store information regarding the fire in the charger or the battery management device.

[0010] In one embodiment, the controller can receive a minimum power supply from the charger to determine whether or not a fire has occurred.

[0011] In one embodiment, when the battery is fully charged, the controller checks whether it can be disconnected from the charger. If it is confirmed that the connection to the charger has not been disconnected, the controller requests the charger to supply power for the fire monitor and receives power for the fire monitor from the charger.

[0012] In one embodiment, the controller can switch to sleep mode when it is confirmed that the connection with the charger has been disconnected. In one embodiment, the controller receives a user command to activate or deactivate the fire monitoring function, and if the battery is fully charged while the fire monitoring function is activated by a first user command, it monitors information regarding the occurrence of the fire based on the power supply for the fire monitor after the charging is complete, and if the battery is fully charged while the fire monitoring function is deactivated by a second user command, it can switch to sleep mode after the charging is complete.

[0013] An operating method for a battery management device according to one embodiment disclosed herein may include the steps of: generating information relating to a fire; monitoring the information relating to a fire based on a power supply for a fire monitor provided by the charger once the battery is fully charged; and determining whether or not a fire has occurred based on the monitoring results.

[0014] In one embodiment, the step may further include controlling other devices inside the vehicle to perform actions to prevent a fire based on whether or not a fire has occurred.

[0015] In one embodiment, if it is determined that a fire has occurred, the step of storing information regarding the fire in the charger or the battery management device may be further included.

[0016] In one embodiment, once charging of the battery is complete, the system may further include the steps of: checking whether the connection to the charger can be disconnected; and, if it is confirmed that the connection to the charger has not been disconnected, requesting the charger to supply power for the fire monitor and receiving power for the fire monitor from the charger, or, if it is confirmed that the connection to the charger has been disconnected, switching to sleep mode.

[0017] In one embodiment, the system may further include the steps of: receiving a user command to activate or deactivate the fire monitoring function; if the battery is fully charged while the fire monitoring function is activated by a first user command, monitoring information regarding the occurrence of a fire based on the power supply for the fire monitor after the battery is fully charged; or, if the battery is fully charged while the fire monitoring function is deactivated by a second user command, switching to sleep mode after the battery is fully charged. [Effects of the Invention]

[0018] The battery management device and its operating method according to one embodiment disclosed herein do not enter sleep mode even when the vehicle is fully charged, so that it can detect a fire inside the vehicle and take the necessary actions.

[0019] The battery management device and its operating method according to one embodiment disclosed herein can continuously monitor the vehicle's condition after the vehicle has finished charging, and if a fire occurs inside the vehicle, collect the data to more fundamentally analyze the cause of the fire.

[0020] The battery management device and its operating method according to one embodiment disclosed herein can detect and take action against potential fire hazards inside the vehicle in advance by receiving a minimum power supply from the charger after the vehicle has finished charging, and maintaining the operating mode without entering sleep mode.

[0021] A battery management device and its operating method according to one embodiment disclosed herein may provide the user with a user interface that allows the user to select whether to enter sleep mode or maintain operating mode after the vehicle has finished charging, and the user may make the selection. In addition, this document can provide a variety of effects that can be understood directly or indirectly. [Brief explanation of the drawing]

[0022] [Figure 1] It is a block diagram showing the configuration of a general battery pack. [Figure 2] It is a diagram showing a vehicle including a battery management device according to an embodiment disclosed in this document. [Figure 3] It is a block diagram showing a battery management device according to an embodiment disclosed in this document. [Figure 4] It is a diagram showing an example of a display of a battery management device according to an embodiment disclosed in this document. [Figure 5] It is a flowchart showing an operation method of a battery management device according to an embodiment disclosed in this document. [Figure 6] It is a flowchart specifically showing an operation method of a battery management device according to an embodiment disclosed in this document. [Figure 7] It is a flowchart specifically showing an operation method of a battery management device according to an embodiment disclosed in this document. [Figure 8] It is a flowchart specifically showing an operation method of a battery management device according to an embodiment disclosed in this document. [Figure 9] It is a block diagram showing the hardware configuration of a computing system for performing an operation method of a battery management device according to an embodiment disclosed in this document.

Embodiments for Carrying Out the Invention

[0023] Hereinafter, the embodiments disclosed in this document will be described in detail with reference to exemplary drawings. It should be noted that when attaching reference numerals to the components of each drawing, the same components are given the same numerals as much as possible when they are shown on other drawings. Also, when explaining the embodiments disclosed in this document, if a specific explanation of a related known configuration or function is determined to impede the understanding of the embodiments disclosed in this document, the detailed explanation thereof will be omitted.

[0024] In describing the components of the embodiments disclosed herein, terms such as First, Second, A, B, (a), (b), etc., may be used. Such terms are merely for distinguishing a component from other components and do not limit the nature, order, or procedure of that component. Furthermore, 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 the embodiments disclosed herein belong. Terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and not as ideal or overly formal unless explicitly defined in this application.

[0025] Figure 1 is a block diagram showing the configuration of a typical battery pack. Referring to Figure 1, a battery control system including a battery pack 1 according to one embodiment of the present invention and a higher-level controller 2 included in a higher-level system is schematically shown.

[0026] As shown in Figure 1, the battery pack 1 consists of one or more battery cells and includes a rechargeable battery module 10, a switching unit 14 connected in series to the (+) terminal or (-) terminal of the battery module 10 for controlling the flow of charge and discharge current to the battery module 10, and a battery management system 20 that monitors the voltage, current, temperature, etc. of the battery pack 1 and controls and manages it to prevent overcharging and over-discharging. In this case, the battery pack 1 can be equipped with multiple battery modules 10, sensors 12, switching units 14, and battery management systems 20.

[0027] Here, the switching unit 14 is an element for controlling the flow of current for charging or discharging multiple battery modules 10, and for example, at least one relay, electromagnetic contactor, etc. can be used depending on the specifications of the battery pack 1.

[0028] The battery management system 20 is an interface that receives input values ​​of the various parameters described above, and may include a plurality of terminals and circuits connected to these terminals that process the input values. The battery management system 20 can also control the ON / OFF state of the switching unit 14, for example, a relay or contactor, and can be connected to the battery module 10 to monitor the state of each battery module 10. According to one embodiment, the battery management system 20 may include the battery management device 100 shown in Figure 3. According to another embodiment, the battery management system 20 may be a different system from the battery management device 100 shown in Figure 2. That is, the battery management device 100 shown in Figure 3 may be included in the battery pack 1, or it may consist of other devices outside the battery pack 1.

[0029] The higher-level controller 2 can transmit control signals to the battery management system 20 for the battery module 10. This allows the battery management system 20 to be controlled based on the signals applied from the higher-level controller 2.

[0030] Figure 2 shows a vehicle that includes a battery management device according to one embodiment disclosed in this document. Referring to Figure 2, a battery management device according to one embodiment disclosed in this document (for example, the battery management device 100 in Figure 3) can be included in a vehicle 4. For example, the vehicle 4 can include means of transportation that can contain a battery, such as a unicycle, two-wheeled vehicle, three-wheeled vehicle, four-wheeled vehicle, electric vehicle, electric bicycle, truck, or bus.

[0031] The charger 3 can charge the battery of the vehicle 4. For example, the charger 3 can be connected to the vehicle 4 via a charging cable 5 and can charge the vehicle 4.

[0032] In this embodiment, the charger 3 can continuously supply power even after the vehicle 4 has finished charging. For example, when the vehicle 4 is fully charged, it can receive power from the charger 3 for the fire monitor. In another example, when the vehicle 4 is fully charged, it can receive minimal power from the charger 3 for the vehicle 4's fire monitor.

[0033] Figure 3 is a block diagram showing a battery management device according to one embodiment disclosed in this document. Referring to Figure 3, the battery management device 100 according to one embodiment disclosed herein may include a sensor 110 and a controller 120. Depending on the embodiment, the battery management device 100 may be included in the vehicle 4 in Figure 2. Depending on the embodiment, the battery management device 100 may be included in the BMS 20 in Figure 1, or it may be a different device from the BMS 20 in Figure 1.

[0034] Sensor 110 can generate information regarding the occurrence of a fire. For example, sensor 110 can detect at least one of the following: temperature, gas, voltage deviation between battery cells, presence or absence of light, and presence or absence of overvoltage and overcurrent. Other examples include sensor 110, which may include at least one of the following: voltage sensing sensor, current sensing sensor, thermistor, temperature sensor, light sensing sensor, and gas sensor.

[0035] In one embodiment, the sensor 110 can detect at least one of the following: whether or not there is electrolyte leakage from the battery, whether or not there is dielectric breakdown, whether or not there is a two-wire ground fault, and whether or not the pouch is damaged. In another embodiment, the sensor 110 can sense at least one of the following: gas, pressure, current, insulation resistance, temperature, and light emission from the battery, and can generate information regarding the occurrence of a fire based on the sensed information.

[0036] The controller 120 can control the charging of the battery based on the power supply for charging the battery provided by the charger. For example, the controller 120 can control the charging of the battery based on state information such as the battery voltage, current, and state of charge (SOC).

[0037] When the battery is fully charged, the controller 120 can monitor information regarding the occurrence of a fire based on the power supplied for the fire monitor from the charger. For example, when the battery is fully charged, the controller 120 can maintain an operating mode (or monitoring mode) based on the power supplied to the vehicle, and in the operating mode, the controller 120 can monitor information regarding the occurrence of a fire. For example, the operating mode may be a mode in which the functions of the battery management device 100 can be performed. To give another example, the opposite of the operating mode may be a sleep mode, and when the controller 120 enters sleep mode, the controller 120 may cease to perform its functions.

[0038] The controller 120 can determine whether or not a fire has occurred based on the monitoring results. For example, based on the information regarding the occurrence of a fire in the vehicle obtained as a monitoring result, the controller 120 can determine that a fire has occurred if at least one of the following occurs: the temperature rises above a set value, light is emitted above a set value, gas is emitted above a set value, overvoltage is emitted above a set value, overcurrent is emitted above a set value, and the voltage deviation between battery cells is above a set value.

[0039] The controller 120 can control other internal devices to take action to prevent a fire based on whether or not a fire has occurred. For example, the controller 120 can control other internal devices to take at least one of the following actions: forced venting, rapid cooling, and extinguishing a fire via water nozzles. Another example is that if a fire is expected, the controller 120 can shut down all systems inside the vehicle to prevent it from progressing to a fire in the vehicle. Depending on the embodiment, the controller 120 can determine whether or not a fire has occurred in the vehicle and can control other internal devices to take action to prevent a fire in the vehicle.

[0040] The controller 120 can store information about the fire in a charger (for example, charger 2 in Figure 2) or battery management device 100 if it determines that a fire has occurred. For example, if the controller 120 determines that a fire has occurred, it can store the information about the fire collected by the sensor 110 in the battery management device 100 or charger to prevent data loss. In some embodiments, the controller 120 can transmit the information about the fire to an external server (for example, host controller 2 in Figure 1).

[0041] According to this embodiment, the controller 120 can receive a minimum amount of power from a charger (for example, charger 3 in Figure 2) to determine whether or not a fire has occurred.

[0042] The controller 120 can check whether the connection to the charger can be disconnected once the battery charging is complete. For example, if it is confirmed that the connection to the charger has not been disconnected, the controller 120 can request the charger to supply power for the fire monitor and receive power for the fire monitor from the charger. In another example, if it is confirmed that the connection to the charger has been disconnected, the controller 120 can switch to sleep mode. According to this embodiment, if the connection to the charger is disconnected, the vehicle user is present at the site, so the controller 120 can switch to sleep mode to prevent the battery from discharging.

[0043] A battery management device 100 according to one embodiment disclosed herein may further include a display 130. The display 130 can receive user input. For example, the display 130 can provide a user interface that allows the user to set whether or not to switch the battery management device 100 into sleep mode.

[0044] In this embodiment, the display 130 can provide the user with a user interface that allows the user to set whether to switch the battery management device 100 to sleep mode or to keep the battery management device 100 in operation mode when charging is complete.

[0045] The controller 120 can receive user commands to activate or deactivate the fire monitoring function. For example, the controller 120 can receive user commands from the display 130.

[0046] The controller 120 can decide whether or not to activate the fire monitoring function based on user commands. For example, if the battery is fully charged while the fire monitoring function is activated by a first user command, the controller 120 can monitor information regarding the occurrence of a fire based on the power supply for the fire monitor after charging is complete. In another example, if the battery is fully charged while the fire monitoring function is deactivated by a second user command, the controller 120 can switch to sleep mode after charging is complete.

[0047] Figure 4 shows an example of a display for a battery management device according to one embodiment disclosed in this document. Referring to Figure 4, the user interface 40 of the battery management device 100 according to one embodiment disclosed herein can provide a button 45 that can be set to maintain or deactivate an operating mode (or monitor mode). For example, the battery management device 100 can receive user commands via a display to activate or deactivate the fire monitoring function.

[0048] In this embodiment, via a button 45 that can be set whether or not to maintain the operating mode, the user can choose whether to keep the battery management device 100 in operating mode or switch to sleep mode when the vehicle's charging is complete.

[0049] In one embodiment, the battery management device 100 can receive user commands via the button 45 to activate or deactivate the fire monitoring function. In this embodiment, the operating mode can be referred to as the monitor mode.

[0050] Figure 5 is a flowchart showing the operation method of a battery management device according to one embodiment disclosed in this document. Referring to Figure 5, the operation method of the battery management device 100 according to one embodiment disclosed in this document may include the steps of: generating information regarding the occurrence of a fire (S110); controlling the charging of the battery based on the power supply for charging the battery supplied from the charger (S120); monitoring information regarding the occurrence of a fire based on the power supply for a fire monitor supplied from the charger once the battery charging is complete (S130); and determining whether or not a fire has occurred based on the monitoring results (S140).

[0051] In the step of generating information regarding the occurrence of a fire (S110), the sensor 110 can generate information regarding the occurrence of a fire. For example, the sensor 110 can detect at least one of the following: temperature, gas, voltage deviation between battery cells, presence or absence of light, and presence or absence of overvoltage and overcurrent, and can generate information regarding the occurrence of a fire based on the detected information. Other examples include the sensor 110, which may include at least one of the following: a voltage detection sensor, a current detection sensor, a thermistor, a temperature sensor, a light detection sensor, and a gas sensor.

[0052] In step (S120), which controls the charging of the battery based on the power supply for charging the battery supplied from the charger, the controller 120 can control the charging of the battery based on the power supply for charging the battery supplied from the charger.

[0053] In step (S130), once the battery is fully charged, the controller 120 can monitor information regarding the occurrence of a fire based on the power supply for the fire monitor provided by the charger. For example, the controller 120 can monitor information regarding the occurrence of a fire generated from the sensor 110 based on the minimum power supply for the fire monitor provided by the charger.

[0054] In step S140, which determines whether a fire has occurred based on the monitoring results, the controller 120 can determine whether a fire has occurred based on the monitoring results. For example, based on information regarding the occurrence of a fire in the vehicle, the controller 120 can determine if a fire has occurred in the vehicle if at least one of the following occurs: the temperature rises above a set value, light is generated above a set value, gas is generated above a set value, overvoltage is generated above a set value, overcurrent is generated above a set value, and the voltage deviation between battery cells is above a set value.

[0055] Figures 6 to 8 are flowcharts specifically illustrating the operation method of a battery management device according to one embodiment disclosed in this document. Referring to Figure 6, the operation method of a battery management device 100 included in a vehicle that receives power for a fire monitor from a charger when charging is complete, according to one embodiment disclosed in this document, may further include the steps of: controlling other devices inside the vehicle to take action to prevent fire based on whether or not a fire has occurred (S210); and, if it is determined that a fire has occurred, storing information about the fire in the charger or battery management device (S220). Depending on the embodiment, the operation method of the battery management device 100 may further include at least one of steps S210 and S220.

[0056] In step (S210), where the controller controls other devices inside the vehicle to perform actions to prevent a fire based on whether or not a fire has occurred, the controller 120 can control other devices inside the vehicle to perform actions to prevent a fire based on whether or not a fire has occurred. For example, the controller 120 can control other devices inside the vehicle to perform at least one of the following actions: forced venting, rapid cooling, and extinguishing a fire via water nozzles. Another example is that if a fire is expected to occur, the controller 120 can shut down all systems inside the vehicle to prevent the fire from progressing to ignition of the vehicle.

[0057] If a fire is detected, in the step (S220) of storing information about the fire in the charger or battery management device, the controller 120 may store the information about the fire in the charger (for example, charger 2 in Figure 2) or battery management device 100. For example, if a fire occurs, the controller 120 may store the information about the fire collected by the sensor 110 in the battery management device 100 or charger to prevent data loss. In some embodiments, the controller 120 may transmit the information about the fire to an external server (for example, the higher-level controller 2 in Figure 1).

[0058] Referring to Figure 7, the operation method of the battery management device 100 according to one embodiment disclosed in this document may further include the steps of: confirming whether the connection with the charger can be disconnected when the battery charging is complete (S310); and switching to sleep mode (S320, S330) when it is confirmed that the charger has supplied power for the fire monitor and that power for the fire monitor has been supplied from the charger, or that the connection with the charger has been disconnected.

[0059] In step S310, which checks whether the battery can be disconnected from the charger once charging is complete, the controller 120 can check whether the battery can be disconnected from the charger once charging is complete. For example, if there is energy being transferred from the charger, the controller 120 can confirm that the connection to the charger has not been disconnected, and if there is no energy being transferred from the charger, the controller 120 can confirm that the connection to the charger has been disconnected.

[0060] If it is confirmed that the connection to the charger has not been disconnected, in S320 the controller 120 may request the charger to supply power for the fire monitor and receive power for the fire monitor from the charger. For example, the controller 120 may receive a minimum power supply for the fire monitor from the charger. Once it is confirmed that the connection with the charger has been disconnected, the controller 120 in S330 can switch to sleep mode.

[0061] Referring to Figure 8, the operation method of the battery management device 100 according to one embodiment disclosed in this document may further include the steps of: receiving a user command to activate or deactivate the fire monitoring function (S410); confirming the activation or deactivation of the monitoring function (S420); if the battery charging is completed while the fire monitoring function is activated by a first user command, monitoring information regarding the occurrence of a fire based on the power supply for the fire monitor after charging is complete (S430); and if the battery charging is completed while the fire monitoring function is deactivated by a second user command, switching to sleep mode after charging is complete (S440).

[0062] In step (S410), which involves receiving a user command to activate or deactivate the fire monitoring function, the controller 120 can receive a user command to activate or deactivate the fire monitoring function. For example, the controller 120 can receive a user command received from the display 130.

[0063] In the step (S420) of confirming the activation or deactivation of the monitoring function, the controller 120 can confirm the activation or deactivation of the monitoring function based on a user command.

[0064] If a user input (e.g., a first user command) is received to activate the monitoring function, in S430, if the battery is fully charged while the fire monitoring function is activated, the controller 120 can monitor information regarding the occurrence of a fire based on the power supply for the fire monitor after the battery is fully charged.

[0065] If a user input (e.g., a second user command) is received to deactivate the monitoring function, in S440, the controller 120 may switch to sleep mode after the battery has finished charging while the fire monitoring function is deactivated.

[0066] Figure 9 is a block diagram showing the hardware configuration of a computing system for performing the operation method of a battery management device according to one embodiment disclosed in this document.

[0067] Referring to Figure 9, the computing system 1000 according to one embodiment disclosed in this document may include an MCU 1010, a memory 1020, an input / output interface 1030, and a communication interface 1040.

[0068] The MCU1010 may be a processor that executes various programs stored in memory 1020 (for example, a battery pack voltage or current acquisition program, a relay control program, a battery fire detection program, etc.), processes various information including the battery pack voltage, temperature, and whether or not a fire has occurred through such programs, and performs the functions of the battery management device shown in Figure 2 above.

[0069] Memory 1020 can store various programs related to the collection and diagnosis of battery log information. It can also store various information such as battery current, voltage, battery pack voltage, and temperature.

[0070] Multiple such memory 1020s may be provided as needed. Memory 1020 may be volatile memory or non-volatile memory. As volatile memory, RAM, DRAM, SRAM, etc., can be used for memory 1020. As non-volatile memory, ROM, PROM, EAROM, EPROM, EEPROM, flash memory, etc., can be used for memory 1020. The examples of memory 1020 listed above are merely illustrative and are not limiting.

[0071] The input / output interface 1030 can provide an interface that connects input devices (not shown), such as keyboards, mice, and touch panels, with output devices (not shown), such as displays, and the MCU 1010, enabling data transmission and reception.

[0072] The communication interface 1040 is configured to send and receive various data with a server and may be various devices that support wired or wireless communication. For example, a battery management device can send and receive information such as relay control programs, voltage, current, temperature, and fire status of various battery packs from a separately provided external server via the communication interface 1040.

[0073] Thus, the computer program according to one embodiment disclosed in this document may be recorded in memory 1020 and processed by MCU 1010 to be realized as a module that performs, for example, the functions shown in Figure 3.

[0074] The above description is merely illustrative of the technical concept disclosed in this document, and a person with ordinary skill in the art to which the embodiments disclosed in this document belong can make various modifications and variations without departing from the essential characteristics of the embodiments disclosed in this document.

[0075] Therefore, the embodiments disclosed herein are for illustrative purposes only, not to limit, the technical ideas disclosed herein, and such embodiments do not limit the scope of the technical ideas disclosed herein. The scope of protection for the technical ideas disclosed herein shall be interpreted in accordance with the claims described below, and all technical ideas within an equivalent scope shall be interpreted as being included in the scope of rights of this document.

Claims

1. A battery management device, A sensor that generates information about the occurrence of a fire, Control the charging of the battery using the power supply for charging the battery supplied from the charger, When the battery is fully charged, a controller monitors information regarding the occurrence of the fire using the power supply for the fire monitor provided by the charger, and determines whether or not a fire has occurred based on the results of the monitoring. Includes, The aforementioned controller, Once the battery has finished charging, check whether the connection to the charger has been disconnected. If it is confirmed that the connection to the charger has not been disconnected, the system requests the charger to supply power for the fire monitor. A battery management device that receives power for the fire monitor from the charger.

2. The aforementioned controller, The battery management device according to claim 1, which controls other devices inside the vehicle to take action to prevent or extinguish a fire based on whether or not a fire has occurred.

3. The aforementioned controller, The battery management device according to claim 1 or 2, wherein, when it is determined that a fire has occurred, it stores information regarding the fire in the charger or the battery management device.

4. The aforementioned controller, The battery management device according to claim 1 or 2, which receives a minimum power supply from the charger for determining whether or not a fire has occurred.

5. The aforementioned controller, The battery management device according to claim 1, which switches to sleep mode when it is confirmed that the connection with the charger has been disconnected.

6. The aforementioned controller, Upon receiving a user command to activate or deactivate the fire monitor function, If the battery is fully charged while the fire monitor's function is activated by a first user command, the power supply for the fire monitor is used to monitor information regarding the occurrence of the fire. The battery management device according to claim 1 or 2, which switches to sleep mode when the battery is fully charged while the fire monitor's function is deactivated by a second user command.

7. A method for operating a battery management device, Steps to generate information regarding the occurrence of a fire, A step of controlling the charging of the battery using a power supply for charging the battery supplied from a charger, Once the battery is fully charged, the power supply for the fire monitor provided by the charger is used to monitor information regarding the occurrence of the fire. A step of determining whether or not a fire has occurred based on the results of the aforementioned monitor, Once the battery is fully charged, the next step is to check whether the connection to the charger has been disconnected. If it is confirmed that the connection to the charger has not been disconnected, the system will request the charger to supply power for the fire monitor, and will receive power for the fire monitor from the charger, or A method for operating a battery management device, comprising the step of switching to sleep mode when it is confirmed that the connection with the charger has been disconnected.

8. The method for operating a battery management device according to claim 7, further comprising the step of controlling other devices inside the vehicle to take action to prevent or extinguish a fire based on whether or not a fire has occurred.

9. A method for operating a battery management device according to claim 7 or 8, further comprising the step of storing information relating to the fire in the charger or the battery management device when it is determined that a fire has occurred.

10. The steps include receiving a user command to activate or deactivate the fire monitor function, If the battery is fully charged while the fire monitor's function is activated by a first user command, the power supply for the fire monitor is used to monitor information regarding the occurrence of the fire, or A method for operating a battery management device according to claim 7 or 8, further comprising the step of switching to sleep mode if charging of the battery is completed while the function of the fire monitor is deactivated by a second user command.

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