KR20240039256A - System and method for monitoring battery in activation process - Google Patents

Abstract

A battery monitoring system according to an embodiment of the present invention is a battery monitoring system in a battery activation process, and is electrically connected to the positive and negative terminals of the battery, and performs charging and discharging for activating the battery. Device; a temperature sensor that measures the temperature of the battery during the charging and discharging process of the battery; and a battery monitoring device that monitors the state of the battery based on the temperature value measured by the temperature sensor.

Description

Battery monitoring system and battery monitoring method in the activation process {SYSTEM AND METHOD FOR MONITORING BATTERY IN ACTIVATION PROCESS}

The present invention relates to a battery monitoring system and a battery monitoring method, and more specifically, to a battery monitoring system and a battery monitoring method in an activation process, and a battery monitoring device included in the battery monitoring system.

Secondary batteries are batteries that can be reused by charging even after discharge, and can be used as an energy source for small devices such as portable phones, tablet PCs, and vacuum cleaners. They can also be used as ESS (Energy Storage) for personal mobility, automobiles, and smart grids. It is also used as a medium-to-large energy source such as a system).

Secondary batteries are used in the form of an assembly such as a battery module in which multiple battery cells are connected in series or parallel, or a battery pack in which battery modules are connected in series or parallel, depending on the requirements of the system.

Battery cells are manufactured through an assembly process and an activation process. Since battery cells are assembled in a discharged state, an activation process must be performed after the battery cell assembly process to activate the positive electrode active material and create a surface film (SEI, Solid Electrolyte Interface) on the negative electrode to function as a battery. This activation process is called a formation process.

During the activation process, there is a risk that some batteries may overheat and catch fire during the charging and discharging process of the battery cells. To detect these ignition hazard situations early, fire detection systems can be applied to active process equipment. In general, a fire detection system applied to activation process equipment is configured to determine an ignition risk state when smoke is detected through a smoke detection sensor configured inside the activation process equipment and perform follow-up control measures for this. In the case of such a conventional fire detection system, there are limitations in quickly detecting an ignition risk situation. In addition, in the case of a fire monitoring system using a temperature sensor installed inside the charging and discharging device to measure the internal environmental temperature, accurate temperature measurement is difficult due to the influence of air conditioning devices such as fans, which limits the accurate detection of ignition risk situations. There is.

As a technology to solve the above problems, battery monitoring technology in the activation process that can detect ignition risk situations more quickly and accurately is needed.

Korean Patent No. 1625716

The purpose of the present invention to solve the above problems is to provide a battery monitoring system in the battery activation process.

Another purpose of the present invention to solve the above problems is to provide a battery monitoring method in the battery activation process.

Another purpose of the present invention to solve the above problems is to provide a battery monitoring device included in such a battery monitoring system.

A battery monitoring system according to an embodiment of the present invention for achieving the above object is a battery monitoring system in a battery activation process, and is electrically connected to the positive and negative terminals of the battery to provide charging for activation of the battery. A charging/discharging device that performs discharging; a temperature sensor that measures the temperature of the battery during the charging and discharging process of the battery; and a battery monitoring device that monitors the state of the battery based on the temperature value measured by the temperature sensor.

The temperature sensor may be configured to measure the surface temperature of the battery by physically contacting the battery during the charging and discharging process of the battery.

The temperature sensor is coupled to the charging and discharging device, and may be configured to contact a portion of the battery when the charging and discharging device is electrically connected to the positive and negative terminals.

The temperature sensor is configured to be coupled to the channel board of the charging and discharging device, and is configured to contact a portion of the battery when the positive and negative contact pins of the charging and discharging device contact the positive and negative terminals, respectively. It can be configured.

The temperature sensor may be configured to contact a portion of the negative terminal formed on the upper surface of the battery.

The battery monitoring device may diagnose whether the battery is at risk of ignition based on the surface temperature value measured by the temperature sensor.

The battery monitoring device satisfies one or more of a first condition that the surface temperature value of the battery exceeds a predefined critical temperature, and a second condition that the surface temperature change rate of the battery exceeds the predefined critical change rate. In this case, the battery may be determined to be in an ignition risk state.

The battery monitoring device may calculate characteristic information of the battery or correct previously stored characteristic information based on the surface temperature value measured by the temperature sensor.

A battery monitoring device according to an embodiment of the present invention for achieving the above other object is a battery monitoring device that works in conjunction with a charge/discharge device for a battery activation process and a temperature sensor for measuring the temperature of the battery, and includes at least one processor; and a memory storing at least one instruction executed through the at least one processor.

Here, the at least one command is, when the charging and discharging device is electrically connected to the positive and negative terminals of the battery and performs charging and discharging to activate the battery, the temperature of the battery is received from the temperature sensor. A command that receives a value; and a command for monitoring the state of the battery based on the received temperature value.

The temperature value may correspond to the surface temperature value of the battery measured during the charging and discharging process of the battery.

The temperature value may correspond to the surface temperature value of the negative terminal formed on the upper surface of the battery.

The command for monitoring the state of the battery may include a command for diagnosing whether the battery is at risk of ignition based on the surface temperature value measured by the temperature sensor.

The command for diagnosing whether the battery is at risk of ignition includes a first condition in which the surface temperature value of the battery exceeds a predefined critical temperature, and a second condition in which the surface temperature change rate of the battery exceeds the predefined critical change rate. If one or more of the following is satisfied, a command may be included to determine that the battery is in an ignition risk state.

The command for monitoring the state of the battery may include a command for calculating characteristic information of the battery or correcting pre-stored characteristic information based on the surface temperature value measured by the temperature sensor.

A battery monitoring method according to an embodiment of the present invention for achieving the above other object is a battery of a battery monitoring system including a charging and discharging device for a battery activation process, a temperature sensor for measuring the temperature of the battery, and a battery monitoring device. A monitoring method, comprising: electrically connecting the charging and discharging device to a positive terminal and a negative terminal of the battery to perform charging and discharging to activate the battery; Measuring, by the temperature sensor, the temperature of the battery during charging and discharging of the battery; and monitoring, by the battery monitoring device, the state of the battery based on the temperature value measured by the temperature sensor.

The temperature value may correspond to the surface temperature value of the battery measured during the charging and discharging process of the battery.

The temperature value may correspond to the surface temperature value of the negative terminal formed on the upper surface of the battery.

Monitoring the state of the battery may include diagnosing whether the battery is at risk of ignition based on the surface temperature value measured by the temperature sensor.

The step of diagnosing whether there is an ignition risk of the battery includes a first condition in which the surface temperature value of the battery exceeds a predefined critical temperature, and a second condition in which the surface temperature change rate of the battery exceeds the predefined critical change rate. If one or more of the following is satisfied, it may include determining that the battery is in an ignition risk state.

Monitoring the state of the battery may include calculating characteristic information of the battery or correcting pre-stored characteristic information based on the surface temperature value measured by the temperature sensor.

According to the embodiment of the present invention as described above, an ignition risk situation can be detected more quickly and accurately during the battery activation process.

Additionally, according to the above-described embodiment of the present invention, more accurate characteristic information about the battery cell can be obtained during the activation process.

1 is a block diagram of a battery monitoring system according to an embodiment of the present invention.
2 to 4 are reference diagrams for explaining a charge/discharge device and a temperature sensor according to an embodiment of the present invention.
Figures 5 to 7 show test results to demonstrate the effect according to the present invention.
Figure 8 is a reference diagram for explaining a method for diagnosing the risk of ignition according to an embodiment of the present invention.
Figure 9 is an operation flowchart of a battery monitoring method according to an embodiment of the present invention.
Figure 10 is a block diagram of a battery monitoring device according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components.

Terms such as first, second, A, B, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term “and/or” includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

1 is a block diagram of a battery monitoring system according to an embodiment of the present invention.

As shown in FIG. 1, the battery monitoring system 100 according to the present invention may be configured to include a charge/discharge device 110, a temperature sensor 120, and a battery monitoring device 130.

The charge/discharge device 110 is a device that performs charge/discharge to activate the battery 10. Here, the charge/discharge device 110 is electrically connected to the positive and negative terminals of the battery 10 during the activation process, and can perform charge/discharge for activation of the battery according to a preset control signal.

The charging and discharging device 110 includes a tray on which a plurality of batteries are mounted, a positive contact pin in electrical contact with the positive terminal of the battery, a negative contact pin in electrical contact with the negative terminal of the battery, a positive contact pin, and a negative contact pin. It may be configured to include a supporting channel board.

When the positive terminal of the battery 10 is formed at the top of the battery and the negative terminal is formed at the bottom of the battery, the charging and discharging device 110 may be configured to include an upper channel board and a lower channel board, and a positive contact point. The pin and the negative contact pin may be configured to be coupled to the upper channel board and the lower channel board, respectively.

When the positive and negative terminals of the battery 10 are formed on the upper part of the battery, the channel board of the charging and discharging device 110 is disposed on the upper part of the battery 10, and the positive and negative contact pins are on the channel board. It can be composed by combining.

When the activation process proceeds, the channel board of the charge/discharge device 110 moves toward the battery 10, so that the positive and negative contact pins coupled to the channel board are connected to the positive and negative terminals of the battery 10, respectively. When contacted, charging and discharging of the battery 10 may proceed.

The temperature sensor 120 can measure the temperature of the battery 10. Here, the temperature sensor 120 may be configured to measure the surface temperature of the battery 10 by physically contacting the battery 10 during the charging and discharging process for activation. In an embodiment, the temperature sensor 120 may not be in contact with the battery 10 before charging and discharging, but may be configured to contact the battery 10 at the time of charging and discharging.

The battery monitoring device 130 may monitor the state of the battery 10 based on the temperature value measured by the temperature sensor 120. Depending on the embodiment, the temperature value measured by the temperature sensor 120 may correspond to the surface temperature value of the battery 10 measured during the charging and discharging process.

The battery monitoring device 130 can diagnose whether there is a risk of ignition of the battery based on the surface temperature value measured by the temperature sensor 120. Here, the battery monitoring device 130 sets a first condition in which the surface temperature value of the battery 10 exceeds a predefined threshold temperature (Tth), and the surface temperature change rate of the battery 10 is a predefined threshold change rate. If one or more of the second conditions exceeding (Dth) are satisfied, the battery 10 may be determined to be in an ignition risk state.

The battery monitoring device 130 may calculate characteristic information of the battery 10 or correct previously stored characteristic information based on the surface temperature value measured by the temperature sensor 120. Here, the characteristic information of the battery 10 may include either the capacity value of the battery or the internal resistance value obtained in the activation process.

The capacity value and internal resistance value of the battery are information used to select defective batteries in the activation process, and need to be calculated more accurately. The battery monitoring device 130 can more accurately calculate the capacity value and internal resistance value of the battery by using the surface temperature value measured by the temperature sensor 120 of the present invention. Meanwhile, when the capacity value and internal resistance value of the battery have already been calculated and stored, the battery monitoring device 130 uses the surface temperature value measured in real time to correct the previously stored capacity value and internal resistance value of the battery, More accurate battery capacity and internal resistance values can be output.

2 to 4 are reference diagrams for explaining a charge/discharge device and a temperature sensor according to an embodiment of the present invention.

Referring to FIG. 2, the charging and discharging device 110 may be configured to include a tray 111 on which a plurality of batteries 10 are mounted, and a channel board 112 disposed on the upper part of the tray 111. . Here, the battery 10 may correspond to a cylindrical battery in which a positive terminal and a negative terminal are formed at the top of the battery.

Referring to Figures 2 and 3, the positive contact pin 113 and the negative contact pin 114 are configured by being combined with the channel board 112, and the temperature sensor 120 is configured by being combined with the channel board 112. and can be arranged in parallel with the positive contact pin 113 and the negative contact pin 114. Here, the positive contact pin 113, the negative contact pin 114, and the temperature sensor 120 may be provided as many as the number of batteries 10 mounted on the tray 111 (one per channel).

When the positive and negative contact pins 113 and 114 of the charging and discharging device 110 contact the positive and negative terminals of the battery 10, respectively, the temperature sensor 120 also contacts the surface of the battery 10. It can be configured as follows.

Referring to FIG. 4, the positive contact pin 113 is in contact with a partial surface area (P1) of the positive electrode terminal 11, and the negative contact pin 114 is in contact with a partial surface area (P2) of the negative terminal 12. The lower surface of the temperature sensor 120 may be configured to contact a partial surface area (P3) of the negative terminal 12.

Referring to Figures 2 to 4, when the activation process proceeds, the channel board 112 of the charge/discharge device 110 moves downward toward the battery 10, and the positive contact pin 113 and the negative contact pin ( 114) is in contact with the anode terminal 11 and the cathode terminal 12, respectively, and the lower surface of the temperature sensor 120 may also be in contact with the cathode terminal 12. Afterwards, charging and discharging of the battery 10 proceeds through the positive contact pin 113 and the negative contact pin 114, and the temperature sensor 120 measures the surface temperature of the battery 10 in real time during the charging and discharging process. do.

Figures 5 to 7 show test results to demonstrate the effect according to the present invention.

As shown in FIG. 5, among the plurality of batteries 10 placed at positions spaced apart from the fan, a temperature measurement test was performed on each of the batteries placed at positions 1, 2, and 3. proceeded.

Figure 6 is a temperature measurement graph measured during the battery charging process, and shows the temperature value measured through the temperature sensor 120 (Figures 2 and 3) of the present invention and the temperature value measured through the non-contact temperature sensor. Figure 7 is a temperature measurement graph measured during the battery discharge process, and shows the temperature value measured through the temperature sensor 120 (Figures 2 and 3) of the present invention and the temperature value measured through the non-contact temperature sensor.

Here, [1], [2], [3] are temperature graphs for batteries No. 1, No. 2, and No. 3 measured through the temperature sensor 120, [1'], [2'], [3'] is a temperature graph for batteries No. 1, No. 2, and No. 3 measured through a non-contact temperature sensor.

Referring to Figures 6 and 7, when measuring the temperature through a non-contact temperature sensor, the temperature is measured up to 8 degrees Celsius (about 23%) higher than when measuring the temperature through the temperature sensor 120 according to the present invention. It was confirmed that In addition, it was confirmed that when measuring temperature using the temperature sensor 120 according to the present invention, the temperature change during the charging and discharging process is measured to be lower than when measuring temperature using a non-contact temperature sensor.

In other words, it can be confirmed that when the contact temperature sensor according to the present invention is applied to a battery monitoring system, it is possible to quickly diagnose whether the battery is ignited and calculate the battery characteristic information (capacity, internal resistance, etc.) more accurately. there is.

Figure 8 is a reference diagram for explaining a method for diagnosing the risk of ignition according to an embodiment of the present invention.

Figure 8 shows surface temperature changes for each of a normal battery and a ignited battery during charging and discharging. Referring to FIG. 8, in the case of a normal battery, the temperature gradually increases during the charging or discharging process and converges to a certain temperature. However, in the case of a ignited battery, the temperature gradually increases, and then the temperature change rate increases and the temperature rapidly increases. You can.

The battery monitoring device 130 according to the present invention can diagnose whether there is a risk of ignition of the battery based on the surface temperature value measured by the temperature sensor 120.

When the surface temperature value of the battery 10 exceeds a predefined threshold temperature (Tth), the battery monitoring device 130 may determine the battery 10 to be in an ignition risk state.

When the surface temperature change rate of the battery 10 exceeds a predefined critical rate of change (Dth), the battery monitoring device 130 may determine the battery 10 to be in an ignition risk state.

The battery monitoring device 130 operates when the surface temperature change rate of the battery 10 exceeds the predefined critical change rate (Dth) and the surface temperature change rate of the battery 10 exceeds the predefined critical change rate (Dth). , the battery 10 may be determined to be in an ignition risk state.

Figure 9 is an operation flowchart of a battery monitoring method according to an embodiment of the present invention.

Referring to FIG. 9, when the activation process proceeds, the channel board 112 of the charge/discharge device 110 moves downward toward the battery 10, and the positive contact pin 113 and the negative contact pin 114 These are in contact with the positive electrode terminal 11 and the negative electrode terminal 12, respectively, and the lower surface of the temperature sensor 120 is in contact with the negative terminal 12 (S910).

Afterwards, charging and discharging of the battery 10 begins through the positive contact pin 113 and the negative contact pin 114 (S920).

The temperature sensor 120 measures the surface temperature of the battery 10 during charging and discharging (S930).

The battery monitoring device 130 monitors the state of the battery 10 based on the surface temperature value measured by the temperature sensor 120 (S940).

The battery monitoring device 130 can diagnose whether there is a risk of ignition of the battery based on the surface temperature value measured by the temperature sensor 120, and calculate characteristic information of the battery 10 or pre-stored characteristics. Information can be corrected.

Figure 10 is a block diagram of a battery monitoring device according to an embodiment of the present invention.

The battery monitoring device 1000 according to an embodiment of the present invention includes at least one processor 1010, a memory 1020 that stores at least one command executed through the processor, and a transmitter and receiver connected to a network to perform communication. It may include device 1030.

The at least one command is to receive a temperature value for the battery from the temperature sensor when the charging and discharging device is electrically connected to the positive and negative terminals of the battery and performs charging and discharging to activate the battery. command to do; and a command for monitoring the state of the battery based on the received temperature value.

The temperature value may correspond to the surface temperature value of the battery measured during the charging and discharging process of the battery.

The temperature value may correspond to the surface temperature value of the negative terminal formed on the upper surface of the battery.

The command for monitoring the state of the battery may include a command for diagnosing whether the battery is at risk of ignition based on the surface temperature value measured by the temperature sensor.

The command for diagnosing whether the battery is at risk of ignition includes a first condition in which the surface temperature value of the battery exceeds a predefined critical temperature, and a second condition in which the surface temperature change rate of the battery exceeds the predefined critical change rate. If one or more of the following is satisfied, a command may be included to determine that the battery is in an ignition risk state.

The command for monitoring the state of the battery may include a command for calculating characteristic information of the battery or correcting pre-stored characteristic information based on the surface temperature value measured by the temperature sensor.

The battery monitoring device 1000 may further include an input interface device 1040, an output interface device 1050, a storage device 1060, etc. Each component included in the battery monitoring device 1000 is connected by a bus 1070 and can communicate with each other.

Here, the processor 1010 may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to embodiments of the present invention are performed. there is. Memory (or storage device) may be comprised of at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory may consist of at least one of read only memory (ROM) and random access memory (RAM).

The operation of the method according to an embodiment of the present invention can be implemented as a computer-readable program or code on a computer-readable recording medium. Computer-readable recording media include all types of recording devices that store data that can be read by a computer system. Additionally, computer-readable recording media can be distributed across networked computer systems so that computer-readable programs or codes can be stored and executed in a distributed manner.

Although some aspects of the invention have been described in the context of an apparatus, it may also refer to a corresponding method description, where a block or device corresponds to a method step or feature of a method step. Similarly, aspects described in the context of a method may also be represented by corresponding blocks or items or features of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as a microprocessor, programmable computer, or electronic circuit, for example. In some embodiments, one or more of the most important method steps may be performed by such an apparatus.

Although the present invention has been described with reference to preferred embodiments of the present invention, those skilled in the art may make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it is possible.

10: battery
100: Battery monitoring system
110: Charge/discharge device
120: Temperature sensor
130, 1000: Battery monitoring device

Claims (20)

A battery monitoring system in a battery activation process, comprising:
a charging/discharging device that is electrically connected to the positive and negative terminals of the battery and performs charging and discharging to activate the battery;
a temperature sensor that measures the temperature of the battery during the charging and discharging process of the battery; and
A battery monitoring system comprising a battery monitoring device that monitors the state of the battery based on the temperature value measured by the temperature sensor. In claim 1,
The temperature sensor is,
A battery monitoring system configured to measure the surface temperature of the battery by physically contacting the battery during the charging and discharging process of the battery. In claim 2,
The temperature sensor is,
A battery monitoring system configured to be coupled to the charging and discharging device, and configured to contact a portion of the battery when the charging and discharging device is electrically connected to the positive and negative terminals. In claim 3,
The temperature sensor is,
A battery monitoring device that is coupled to a channel board of the charging and discharging device and is configured to contact a portion of the battery when the positive and negative contact pins of the charging and discharging device are in contact with the positive and negative terminals, respectively. system. In claim 4,
The temperature sensor is,
A battery monitoring system configured to contact a portion of the negative terminal formed on the upper surface of the battery. In claim 2,
The battery monitoring device,
A battery monitoring system that diagnoses whether the battery is at risk of ignition based on the surface temperature value measured by the temperature sensor. In claim 6,
The battery monitoring device,
When one or more of the first condition that the surface temperature value of the battery exceeds a predefined critical temperature and the second condition that the surface temperature change rate of the battery exceeds the predefined critical rate of change are satisfied, the battery is ignited. Battery monitoring system, which determines the critical condition. In claim 2,
The battery monitoring device,
A battery monitoring system that calculates characteristic information of the battery or corrects previously stored characteristic information based on the surface temperature value measured by the temperature sensor. A battery monitoring device that works in conjunction with a charge/discharge device for the battery activation process and a temperature sensor that measures the temperature of the battery,
at least one processor;
Includes a memory that stores at least one instruction executed through the at least one processor,
The at least one command is:
A command for receiving a temperature value for the battery from the temperature sensor when the charging and discharging device is electrically connected to the positive and negative terminals of the battery and performs charging and discharging to activate the battery; and
A battery monitoring device comprising: a command to monitor the state of the battery based on the received temperature value. In claim 9,
The temperature value is,
A battery monitoring device corresponding to the surface temperature value of the battery measured during the charging and discharging process of the battery. In claim 10,
The temperature value is,
A battery monitoring device that corresponds to the surface temperature value of the negative terminal formed on the upper surface of the battery. In claim 10,
The command for monitoring the status of the battery is:
A battery monitoring device comprising a command for diagnosing whether the battery is at risk of ignition based on the surface temperature value measured by the temperature sensor. In claim 12,
The command to diagnose whether the battery is at risk of ignition is:
When one or more of the first condition that the surface temperature value of the battery exceeds a predefined critical temperature and the second condition that the surface temperature change rate of the battery exceeds the predefined critical rate of change are satisfied, the battery is ignited. A battery monitoring device, including instructions for determining a critical condition. In claim 10,
The command for monitoring the status of the battery is:
A battery monitoring device comprising a command for calculating characteristic information of the battery or correcting previously stored characteristic information based on the surface temperature value measured by the temperature sensor. A battery monitoring method of a battery monitoring system including a charging and discharging device for a battery activation process, a temperature sensor for measuring the temperature of the battery, and a battery monitoring device,
The charging and discharging device is electrically connected to the positive and negative terminals of the battery to perform charging and discharging to activate the battery;
Measuring, by the temperature sensor, the temperature of the battery during charging and discharging of the battery; and
A battery monitoring method comprising: monitoring, by the battery monitoring device, the state of the battery based on the temperature value measured by the temperature sensor. In claim 15,
The temperature value is,
A battery monitoring method corresponding to the surface temperature value of the battery measured during the charging and discharging process of the battery. In claim 16,
The temperature value is,
A battery monitoring method corresponding to the surface temperature value of the negative terminal formed on the upper surface of the battery. In claim 16,
The step of monitoring the status of the battery is,
A battery monitoring device comprising diagnosing whether the battery is at risk of ignition based on the surface temperature value measured by the temperature sensor. In claim 18,
The step of diagnosing whether the battery is at risk of ignition is,
When one or more of the first condition that the surface temperature value of the battery exceeds a predefined critical temperature and the second condition that the surface temperature change rate of the battery exceeds the predefined critical rate of change are satisfied, the battery is ignited. A method of monitoring a battery, comprising determining a critical condition. In claim 16,
The step of monitoring the status of the battery is,
A battery monitoring method comprising calculating characteristic information of the battery or correcting previously stored characteristic information based on the surface temperature value measured by the temperature sensor.